///|/ Copyright (c) Prusa Research 2018 - 2023 Vojtěch Bubník @bubnikv, Lukáš Matěna @lukasmatena, Oleksandra Iushchenko @YuSanka, Enrico Turri @enricoturri1966, Tomáš Mészáros @tamasmeszaros, David Kocík @kocikdav, Lukáš Hejl @hejllukas, Pavel Mikuš @Godrak, Filip Sykala @Jony01, Vojtěch Král @vojtechkral
///|/ Copyright (c) 2022 Michael Kirsch
///|/ Copyright (c) 2021 Boleslaw Ciesielski
///|/ Copyright (c) 2019 John Drake @foxox
///|/
///|/ ported from lib/Slic3r/GUI/Plater.pm:
///|/ Copyright (c) Prusa Research 2016 - 2019 Vojtěch Bubník @bubnikv, Vojtěch Král @vojtechkral, Enrico Turri @enricoturri1966, Oleksandra Iushchenko @YuSanka, Lukáš Matěna @lukasmatena, Tomáš Mészáros @tamasmeszaros
///|/ Copyright (c) 2018 Martin Loidl @LoidlM
///|/ Copyright (c) 2017 Matthias Gazzari @qtux
///|/ Copyright (c) Slic3r 2012 - 2016 Alessandro Ranellucci @alranel
///|/ Copyright (c) 2017 Joseph Lenox @lordofhyphens
///|/ Copyright (c) 2015 Daren Schwenke
///|/ Copyright (c) 2014 Mark Hindess
///|/ Copyright (c) 2012 Mike Sheldrake @mesheldrake
///|/ Copyright (c) 2012 Henrik Brix Andersen @henrikbrixandersen
///|/ Copyright (c) 2012 Sam Wong
///|/
///|/ PrusaSlicer is released under the terms of the AGPLv3 or higher
///|/
#include "Plater.hpp"
#include "slic3r/GUI/BitmapCache.hpp"
#include "slic3r/GUI/Jobs/UIThreadWorker.hpp"
#include "slic3r/Utils/PrusaConnect.hpp"

#include <cstddef>
#include <algorithm>
#include <nanosvgrast.h>
#include <numeric>
#include <vector>
#include <string>
#include <regex>
#include <future>
#include <utility>
#include <boost/algorithm/string.hpp>
#include <boost/nowide/cstdio.hpp>
#include <boost/optional.hpp>
#include <boost/filesystem/fstream.hpp> // IWYU pragma: keep
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/log/trivial.hpp>
#include <boost/nowide/convert.hpp>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/json_parser.hpp>

#include <wx/sizer.h>
#include <wx/stattext.h>
#include <wx/button.h>
#include <wx/bmpcbox.h>
#include <wx/statbox.h>
#include <wx/statbmp.h>
#include <wx/filedlg.h>
#include <wx/dnd.h>
#include <wx/progdlg.h>
#include <wx/wupdlock.h>
#include <wx/numdlg.h>
#include <wx/debug.h>
#include <wx/busyinfo.h>
#include <wx/stdpaths.h>
#if wxUSE_SECRETSTORE 
#include <wx/secretstore.h>
#endif

#include <LibBGCode/convert/convert.hpp>

#include "libslic3r/libslic3r.h"
#include "libslic3r/Format/STL.hpp"
#include "libslic3r/Format/AMF.hpp"
#include "libslic3r/Format/3mf.hpp"
#include "libslic3r/Format/OBJ.hpp"
#include "libslic3r/GCode/ThumbnailData.hpp"
#include "libslic3r/Model.hpp"
#include "libslic3r/SLA/SupportPoint.hpp"
#include "libslic3r/SLA/ReprojectPointsOnMesh.hpp"
#include "libslic3r/Print.hpp"
#include "libslic3r/PrintConfig.hpp"
#include "libslic3r/SLAPrint.hpp"
#include "libslic3r/Utils.hpp"
#include "libslic3r/PresetBundle.hpp"
#include "libslic3r/miniz_extension.hpp"
#include "libslic3r/ModelProcessing.hpp"
#include "libslic3r/FileReader.hpp"
#include "libslic3r/MultipleBeds.hpp"

// For stl export
#include "libslic3r/CSGMesh/ModelToCSGMesh.hpp"
#include "libslic3r/CSGMesh/PerformCSGMeshBooleans.hpp"

#include "GUI.hpp"
#include "GUI_App.hpp"
#include "GUI_ObjectList.hpp"
#include "GUI_ObjectManipulation.hpp"
#include "GUI_Utils.hpp"
#include "GUI_Factories.hpp"
#include "wxExtensions.hpp"
#include "MainFrame.hpp"
#include "format.hpp"
#include "3DScene.hpp"
#include "GLCanvas3D.hpp"
#include "Selection.hpp"
#include "GLToolbar.hpp"
#include "GUI_Preview.hpp"
#include "3DBed.hpp"
#include "Camera.hpp"
#include "Mouse3DController.hpp"
#include "Tab.hpp"
#include "Jobs/ArrangeJob2.hpp"
#include "ConfigWizardWebViewPage.hpp"

#include "Jobs/RotoptimizeJob.hpp"
#include "Jobs/SeqArrangeJob.hpp"
#include "Jobs/SLAImportJob.hpp"
#include "Jobs/SLAImportDialog.hpp"
#include "Jobs/NotificationProgressIndicator.hpp"
#include "Jobs/PlaterWorker.hpp"
#include "Jobs/BoostThreadWorker.hpp"
#include "BackgroundSlicingProcess.hpp"
#include "PrintHostDialogs.hpp"
#include "../Utils/ASCIIFolding.hpp"
#include "../Utils/PrintHost.hpp"
#include "../Utils/UndoRedo.hpp"
#include "../Utils/PresetUpdater.hpp"
#include "../Utils/PresetUpdaterWrapper.hpp"
#include "../Utils/Process.hpp"
#include "RemovableDriveManager.hpp"
#include "InstanceCheck.hpp"
#include "NotificationManager.hpp"
#include "PresetComboBoxes.hpp"
#include "MsgDialog.hpp"
#include "ProjectDirtyStateManager.hpp"
#include "Gizmos/GLGizmoSimplify.hpp" // create suggestion notification
#include "Gizmos/GLGizmoSVG.hpp" // Drop SVG file
#include "Gizmos/GLGizmoCut.hpp"
#include "FileArchiveDialog.hpp"
#include "UserAccount.hpp"
#include "UserAccountUtils.hpp"
#include "DesktopIntegrationDialog.hpp"
#include "WebViewDialog.hpp"
#include "WebViewPanel.hpp"
#include "ConfigWizardWebViewPage.hpp"
#include "PresetArchiveDatabase.hpp"
#include "BulkExportDialog.hpp"
#include "LoadStepDialog.hpp"

#include "libslic3r/ArrangeHelper.hpp"

#ifdef __APPLE__
#include "Gizmos/GLGizmosManager.hpp"
#endif // __APPLE__

#include <wx/glcanvas.h>    // Needs to be last because reasons :-/
#include "WipeTowerDialog.hpp"

#include "libslic3r/CustomGCode.hpp"
#include "libslic3r/Platform.hpp"

#include "Widgets/CheckBox.hpp"

#include "GL/glew.h"

using boost::optional;
namespace fs = boost::filesystem;
using Slic3r::_3DScene;
using Slic3r::Preset;
using Slic3r::PrintHostJob;
using Slic3r::GUI::format_wxstr;

static const std::pair<unsigned int, unsigned int> THUMBNAIL_SIZE_3MF = { 256, 256 };

namespace Slic3r {
using namespace ModelProcessing;
namespace GUI {

// BackgroundSlicingProcess updates UI with slicing progress: Status bar / progress bar has to be updated, possibly scene has to be refreshed,
// see PrintBase::SlicingStatus for the content of the message.
wxDEFINE_EVENT(EVT_SLICING_UPDATE,                  SlicingStatusEvent);
// FDM slicing finished, but G-code was not exported yet. Initial G-code preview shall be displayed by the UI.
wxDEFINE_EVENT(EVT_SLICING_COMPLETED,               wxCommandEvent);
// BackgroundSlicingProcess finished either with success or error.
wxDEFINE_EVENT(EVT_PROCESS_COMPLETED,               SlicingProcessCompletedEvent);
wxDEFINE_EVENT(EVT_EXPORT_BEGAN,                    wxCommandEvent);
wxDEFINE_EVENT(EVT_REGENERATE_BED_THUMBNAILS, SimpleEvent);

// Plater::DropTarget

class PlaterDropTarget : public wxFileDropTarget
{
public:
    PlaterDropTarget(MainFrame& mainframe, Plater& plater) : m_mainframe(mainframe), m_plater(plater) {
        this->SetDefaultAction(wxDragCopy);
    }

    virtual bool OnDropFiles(wxCoord x, wxCoord y, const wxArrayString &filenames);

private:
    MainFrame& m_mainframe;
    Plater& m_plater;
};

namespace {
bool emboss_svg(Plater& plater, const wxString &svg_file, const Vec2d& mouse_drop_position)
{
    std::string svg_file_str = into_u8(svg_file);
    GLCanvas3D* canvas = plater.canvas3D();
    if (canvas == nullptr)
        return false;
    auto base_svg = canvas->get_gizmos_manager().get_gizmo(GLGizmosManager::Svg);
    if (base_svg == nullptr)
        return false;
    GLGizmoSVG* svg = dynamic_cast<GLGizmoSVG *>(base_svg);
    if (svg == nullptr)
        return false;

    // Refresh hover state to find surface point under mouse
    wxMouseEvent evt(wxEVT_MOTION);
    evt.SetPosition(wxPoint(mouse_drop_position.x(), mouse_drop_position.y()));
    canvas->on_mouse(evt); // call render where is call GLCanvas3D::_picking_pass()

    return svg->create_volume(svg_file_str, mouse_drop_position, ModelVolumeType::MODEL_PART);
}
}

bool PlaterDropTarget::OnDropFiles(wxCoord x, wxCoord y, const wxArrayString &filenames)
{
#ifdef WIN32
    // hides the system icon
    this->MSWUpdateDragImageOnLeave();
#endif // WIN32

    m_mainframe.Raise();
    m_mainframe.select_tab(size_t(0));
    if (wxGetApp().is_editor())
        m_plater.select_view_3D("3D");

    // When only one .svg file is dropped on scene
    if (filenames.size() == 1) {
        const wxString &filename = filenames.Last();
        const wxString  file_extension = filename.substr(filename.length() - 4);
        if (file_extension.CmpNoCase(".svg") == 0) {
            const wxPoint offset = m_plater.GetPosition();
            Vec2d mouse_position(x - offset.x, y - offset.y);
            // Scale for retina displays
            const GLCanvas3D *canvas = m_plater.canvas3D();
            canvas->apply_retina_scale(mouse_position);
            return emboss_svg(m_plater, filename, mouse_position);
        }
    }
    bool res = m_plater.load_files(filenames);
    m_mainframe.update_title();
    return res;
}

// State to manage showing after export notifications and device ejecting
enum ExportingStatus{
    NOT_EXPORTING,
    EXPORTING_TO_REMOVABLE,
    EXPORTING_TO_LOCAL
};


// Plater / private
struct Plater::priv
{
    // PIMPL back pointer ("Q-Pointer")
    Plater *q;
    MainFrame *main_frame;

    MenuFactory menus;

    // Data
    Slic3r::DynamicPrintConfig *config;        // FIXME: leak?
    std::vector<std::unique_ptr<Slic3r::Print>>     fff_prints;
    std::vector<std::unique_ptr<Slic3r::SLAPrint>> sla_prints;
    Slic3r::Model               model;
    PrinterTechnology           printer_technology = ptFFF;
    std::vector<Slic3r::GCodeProcessorResult> gcode_results;

    // GUI elements
    wxSizer* panel_sizer{ nullptr };
    wxPanel* current_panel{ nullptr };
    std::vector<wxPanel*> panels;
    Sidebar *sidebar;
    Bed3D bed;
    Camera camera;
#if ENABLE_ENVIRONMENT_MAP
    GLTexture environment_texture;
#endif // ENABLE_ENVIRONMENT_MAP
    Mouse3DController mouse3d_controller;
    View3D* view3D;
    GLToolbar view_toolbar;
    GLToolbar collapse_toolbar;
    Preview *preview;
    std::unique_ptr<NotificationManager> notification_manager;
    std::unique_ptr<UserAccount> user_account;
    // Login dialog needs to be kept somewhere.
    // It is created inside evt Bind. But it might be closed from another event.
    LoginWebViewDialog* login_dialog { nullptr };

    ProjectDirtyStateManager dirty_state;
     
    BackgroundSlicingProcess    background_process;
    bool suppressed_backround_processing_update { false };

    // TODO: A mechanism would be useful for blocking the plater interactions:
    // objects would be frozen for the user. In case of arrange, an animation
    // could be shown, or with the optimize orientations, partial results
    // could be displayed.
    //
    // UIThreadWorker can be used as a replacement for BoostThreadWorker if
    // no additional worker threads are desired (useful for debugging or profiling)
    PlaterWorker<BoostThreadWorker> m_worker;
    SLAImportDialog *               m_sla_import_dlg;

    bool                        delayed_scene_refresh;
    std::string                 delayed_error_message;

    wxTimer                     background_process_timer;

    std::string                 label_btn_export;
    std::string                 label_btn_send;

    bool                        show_render_statistic_dialog{ false };

    static const std::regex pattern_bundle;
    static const std::regex pattern_3mf;
    static const std::regex pattern_zip_amf;
    static const std::regex pattern_any_amf;
    static const std::regex pattern_prusa;
    static const std::regex pattern_zip;
    static const std::regex pattern_printRequest;
    static const std::regex pattern_step;

    priv(Plater *q, MainFrame *main_frame);
    ~priv();
    void init();

    bool is_project_dirty() const { return dirty_state.is_dirty(); }
    bool is_presets_dirty() const { return dirty_state.is_presets_dirty(); }
    void update_project_dirty_from_presets() { dirty_state.update_from_presets(); }
    int save_project_if_dirty(const wxString& reason) {
        int res = wxID_NO;
        if (dirty_state.is_dirty()) {
            MainFrame* mainframe = wxGetApp().mainframe;
            if (mainframe->can_save_as()) {
                wxString suggested_project_name;
                wxString project_name = suggested_project_name = get_project_filename(".3mf");
                if (suggested_project_name.IsEmpty()) {
                    fs::path output_file = get_export_file_path(FT_3MF);
                    suggested_project_name = output_file.empty() ? _L("Untitled") : from_u8(output_file.stem().string());
                }

                std::string act_key = "default_action_on_dirty_project";
                std::string act = wxGetApp().app_config->get(act_key);
                if (act.empty()) {
                    RichMessageDialog dialog(mainframe, reason + "\n" + format_wxstr(_L("Do you want to save the changes to \"%1%\"?"), suggested_project_name), wxString(SLIC3R_APP_NAME), wxYES_NO | wxCANCEL);
                    dialog.SetYesNoLabels(_L("Save"), _L("Discard"));
                    dialog.ShowCheckBox(_L("Remember my choice"));
                    res = dialog.ShowModal();
                    if (res != wxID_CANCEL)
                        if (dialog.IsCheckBoxChecked()) {
                            wxString preferences_item = _L("Ask for unsaved changes in project");
                            wxString msg =
                                _L("PrusaSlicer will remember your choice.") + "\n\n" +
                                _L("You will not be asked about it again, when: \n"
                                    "- Closing PrusaSlicer,\n"
                                    "- Loading or creating a new project") + "\n\n" +
                                format_wxstr(_L("Visit \"Preferences\" and check \"%1%\"\nto changes your choice."), preferences_item);

                            MessageDialog msg_dlg(mainframe, msg, _L("PrusaSlicer: Don't ask me again"), wxOK | wxCANCEL | wxICON_INFORMATION);
                            if (msg_dlg.ShowModal() == wxID_CANCEL)
                                return wxID_CANCEL;

                            get_app_config()->set(act_key, res == wxID_YES ? "1" : "0");
                        }
                } 
                else
                    res = (act == "1") ? wxID_YES : wxID_NO;

                if (res == wxID_YES)
                    if (!mainframe->save_project_as(project_name)) {
                        // Return Cancel only, when we don't remember a choice for closing the application.
                        // Elsewhere it can causes an impossibility to close the application at all.
                        res = act.empty() ? wxID_CANCEL : wxID_NO;
                    }
            }
        }
        return res;
    }
    void reset_project_dirty_after_save() { m_undo_redo_stack_main.mark_current_as_saved(); dirty_state.reset_after_save(); }
    void reset_project_dirty_initial_presets() { dirty_state.reset_initial_presets(); }

#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
    void render_project_state_debug_window() const { dirty_state.render_debug_window(); }
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW

    void update(unsigned int flags = 0);
    void select_view(const std::string& direction);
    void select_view_3D(const std::string& name);
    void select_next_view_3D();

    bool is_preview_shown() const { return current_panel == preview; }
    bool is_preview_loaded() const { return preview->is_loaded(); }
    bool is_view3D_shown() const { return current_panel == view3D; }

    bool are_view3D_labels_shown() const { return (current_panel == view3D) && view3D->get_canvas3d()->are_labels_shown(); }
    void show_view3D_labels(bool show) { if (current_panel == view3D) view3D->get_canvas3d()->show_labels(show); }

    bool is_legend_shown() const { return (current_panel == preview) && preview->get_canvas3d()->is_legend_shown(); }
    void show_legend(bool show) { if (current_panel == preview) preview->get_canvas3d()->show_legend(show); }

    bool is_sidebar_collapsed() const   { return sidebar->is_collapsed; }
    void collapse_sidebar(bool collapse);

    bool is_view3D_layers_editing_enabled() const { return (current_panel == view3D) && view3D->get_canvas3d()->is_layers_editing_enabled(); }

    void set_current_canvas_as_dirty();
    GLCanvas3D* get_current_canvas3D();
    void render_sliders(GLCanvas3D& canvas);
    void unbind_canvas_event_handlers();
    void reset_canvas_volumes();

    bool init_view_toolbar();
    bool init_collapse_toolbar();

    void set_preview_layers_slider_values_range(int bottom, int top);
    void update_preview_moves_slider(std::optional<int> visible_range_min = std::nullopt, std::optional<int> visible_range_max = std::nullopt);
    void enable_preview_moves_slider(bool enable);

    void reset_gcode_toolpaths();

    void reset_all_gizmos();
    void apply_free_camera_correction(bool apply = true);
    void update_ui_from_settings();
    void update_main_toolbar_tooltips();
    bool get_config_bool(const std::string &key) const;

    std::vector<size_t> load_files(const std::vector<fs::path>& input_files, bool load_model, bool load_config, bool used_inches = false);
    std::vector<size_t> load_model_objects(const ModelObjectPtrs& model_objects, bool allow_negative_z = false, bool call_selection_changed = true);

    fs::path get_export_file_path(GUI::FileType file_type);
    wxString get_export_file(GUI::FileType file_type);

    const Selection& get_selection() const;
    Selection& get_selection();
    int get_selected_object_idx() const;
    int get_selected_instance_idx() const;
    int get_selected_volume_idx() const;
    void selection_changed();
    void object_list_changed();

    void select_all();
    void deselect_all();
    void remove(size_t obj_idx);
    bool delete_object_from_model(size_t obj_idx);
    void delete_all_objects_from_model();
    void reset();
    void mirror(Axis axis);
    void split_object();
    void split_volume();
    void scale_selection_to_fit_print_volume();

    // Return the active Undo/Redo stack. It may be either the main stack or the Gimzo stack.
    Slic3r::UndoRedo::Stack& undo_redo_stack() { assert(m_undo_redo_stack_active != nullptr); return *m_undo_redo_stack_active; }
    Slic3r::UndoRedo::Stack& undo_redo_stack_main() { return m_undo_redo_stack_main; }
    void enter_gizmos_stack();
    void leave_gizmos_stack();

    void take_snapshot(const std::string& snapshot_name, UndoRedo::SnapshotType snapshot_type = UndoRedo::SnapshotType::Action);
    void take_snapshot(const wxString& snapshot_name, UndoRedo::SnapshotType snapshot_type = UndoRedo::SnapshotType::Action)
        { this->take_snapshot(std::string(snapshot_name.ToUTF8().data()), snapshot_type); }
    int  get_active_snapshot_index();

    void undo();
    void redo();
    void undo_redo_to(size_t time_to_load);

    void suppress_snapshots()   { m_prevent_snapshots++; }
    void allow_snapshots()      { m_prevent_snapshots--; }

    void process_validation_warning(const std::vector<std::string>& warning) const;

    bool background_processing_enabled() const { return this->get_config_bool("background_processing"); }
    void update_print_volume_state();
    void schedule_background_process();
    // Update background processing thread from the current config and Model.
    enum UpdateBackgroundProcessReturnState {
        // update_background_process() reports, that the Print / SLAPrint was updated in a way,
        // that the background process was invalidated and it needs to be re-run.
        UPDATE_BACKGROUND_PROCESS_RESTART = 1,
        // update_background_process() reports, that the Print / SLAPrint was updated in a way,
        // that a scene needs to be refreshed (you should call _3DScene::reload_scene(canvas3Dwidget, false))
        UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE = 2,
        // update_background_process() reports, that the Print / SLAPrint is invalid, and the error message
        // was sent to the status line.
        UPDATE_BACKGROUND_PROCESS_INVALID = 4,
        // Restart even if the background processing is disabled.
        UPDATE_BACKGROUND_PROCESS_FORCE_RESTART = 8,
        // Restart for G-code (or SLA zip) export or upload.
        UPDATE_BACKGROUND_PROCESS_FORCE_EXPORT = 16,
    };
    // returns bit mask of UpdateBackgroundProcessReturnState
    unsigned int update_background_process(bool force_validation = false, bool postpone_error_messages = false);
    // Restart background processing thread based on a bitmask of UpdateBackgroundProcessReturnState.
    bool restart_background_process(unsigned int state);
    // returns bit mask of UpdateBackgroundProcessReturnState
    unsigned int update_restart_background_process(bool force_scene_update, bool force_preview_update);
	void show_delayed_error_message() {
		if (!this->delayed_error_message.empty()) {
			std::string msg = std::move(this->delayed_error_message);
			this->delayed_error_message.clear();
			GUI::show_error(this->q, msg);
		}
	}
    void export_gcode(fs::path output_path, bool output_path_on_removable_media, PrintHostJob upload_job);
    void reload_from_disk();
    bool replace_volume_with_stl(int object_idx, int volume_idx, const fs::path& new_path, const wxString& snapshot = "");
    void replace_with_stl();
    void reload_all_from_disk();
    void set_current_panel(wxPanel* panel);

    void on_slicing_update(SlicingStatusEvent&);
    void on_slicing_completed(wxCommandEvent&);
    void on_process_completed(SlicingProcessCompletedEvent&);
	void on_export_began(wxCommandEvent&);
    void on_layer_editing_toggled(bool enable);
	void on_slicing_began();

	void clear_warnings();
	void add_warning(const Slic3r::PrintStateBase::Warning &warning, size_t oid);
    // Update notification manager with the current state of warnings produced by the background process (slicing).
	void actualize_slicing_warnings(const PrintBase &print);
    void actualize_object_warnings(const PrintBase& print);
	// Displays dialog window with list of warnings. 
	// Returns true if user clicks OK.
	// Returns true if current_warnings vector is empty without showning the dialog
	bool warnings_dialog();

    void on_action_add(SimpleEvent&);
    void on_action_split_objects(SimpleEvent&);
    void on_action_split_volumes(SimpleEvent&);
    void on_action_layersediting(SimpleEvent&);

    void on_object_select(SimpleEvent&);
    void on_right_click(RBtnEvent&);
    void on_update_geometry(Vec3dsEvent<2>&);
    void on_3dcanvas_mouse_dragging_started(SimpleEvent&);
    void on_3dcanvas_mouse_dragging_finished(SimpleEvent&);

    void show_action_buttons(const bool is_ready_to_slice) const;
    void show_autoslicing_action_buttons() const;
    bool can_show_upload_to_connect() const;
    // Set the bed shape to a single closed 2D polygon(array of two element arrays),
    // triangulate the bed and store the triangles into m_bed.m_triangles,
    // fills the m_bed.m_grid_lines and sets m_bed.m_origin.
    // Sets m_bed.m_polygon to limit the object placement.
    void set_bed_shape(const Pointfs& shape, const double max_print_height, const std::string& custom_texture, const std::string& custom_model, bool force_as_custom = false);

    bool can_delete() const;
    bool can_delete_all() const;
    bool can_increase_instances() const;
    bool can_decrease_instances(int obj_idx = -1) const;
    bool can_split_to_objects() const;
    bool can_split_to_volumes() const;
    bool can_arrange() const;
    bool can_layers_editing() const;
    bool can_fix_through_winsdk() const;
    bool can_simplify() const;
    bool can_set_instance_to_object() const;
    bool can_mirror() const;
    bool can_reload_from_disk() const;
    bool can_replace_with_stl() const;
    bool can_split(bool to_objects) const;
    bool can_scale_to_print_volume() const;

    void generate_thumbnail(ThumbnailData& data, unsigned int w, unsigned int h, const ThumbnailsParams& thumbnail_params, Camera::EType camera_type);
    ThumbnailsList generate_thumbnails(const ThumbnailsParams& params, Camera::EType camera_type);
    void regenerate_thumbnails(SimpleEvent&);

    void bring_instance_forward() const;

    // returns the path to project file with the given extension (none if extension == wxEmptyString)
    // extension should contain the leading dot, i.e.: ".3mf"
    wxString get_project_filename(const wxString& extension = wxEmptyString) const;
    void set_project_filename(const wxString& filename);
    // Call after plater and Canvas#D is initialized
    void init_notification_manager();

    // Caching last value of show_action_buttons parameter for show_action_buttons(), so that a callback which does not know this state will not override it.
    mutable bool    			ready_to_slice = { false };
    // Flag indicating that the G-code export targets a removable device, therefore the show_action_buttons() needs to be called at any case when the background processing finishes.
    ExportingStatus             exporting_status { NOT_EXPORTING };
    std::string                 last_output_path;
    std::string                 last_output_dir_path;
    bool                        inside_snapshot_capture() { return m_prevent_snapshots != 0; }

private:
    bool layers_height_allowed() const;

    void update_fff_scene();
    void update_sla_scene();
    void undo_redo_to(std::vector<UndoRedo::Snapshot>::const_iterator it_snapshot);
    void update_after_undo_redo(const UndoRedo::Snapshot& snapshot, bool temp_snapshot_was_taken = false);

    // path to project file stored with no extension
    wxString 					m_project_filename;
    Slic3r::UndoRedo::Stack 	m_undo_redo_stack_main;
    Slic3r::UndoRedo::Stack 	m_undo_redo_stack_gizmos;
    Slic3r::UndoRedo::Stack    *m_undo_redo_stack_active = &m_undo_redo_stack_main;
    int                         m_prevent_snapshots = 0;     /* Used for avoid of excess "snapshoting".
                                                              * Like for "delete selected" or "set numbers of copies"
                                                              * we should call tack_snapshot just ones
                                                              * instead of calls for each action separately
                                                              * */
    std::string 				m_last_fff_printer_profile_name;
    std::string 				m_last_sla_printer_profile_name;

	// vector of all warnings generated by last slicing
	std::vector<std::pair<Slic3r::PrintStateBase::Warning, size_t>> current_warnings;
	bool show_warning_dialog { false };
};

// FIXME: Some of the regex patterns are wrong (missing [.] before file extension).
const std::regex Plater::priv::pattern_bundle(".*[.](amf|amf[.]xml|3mf)", std::regex::icase);
const std::regex Plater::priv::pattern_3mf(".*3mf", std::regex::icase);
const std::regex Plater::priv::pattern_any_amf(".*[.](amf|amf[.]xml|zip[.]amf)", std::regex::icase);
const std::regex Plater::priv::pattern_zip(".*zip", std::regex::icase);
const std::regex Plater::priv::pattern_printRequest(".*printRequest", std::regex::icase);
const std::regex Plater::priv::pattern_step(".*[.](step|stp)", std::regex::icase);

Plater::priv::priv(Plater* q, MainFrame* main_frame)
    : q(q)
    , main_frame(main_frame)
    , config(Slic3r::DynamicPrintConfig::new_from_defaults_keys({
        "bed_shape", "bed_custom_texture", "bed_custom_model", "complete_objects", "duplicate_distance", "extruder_clearance_radius", "extruder_clearance_height", "skirts", "skirt_distance",
        "brim_width", "brim_separation", "brim_type", "variable_layer_height", "nozzle_diameter", "single_extruder_multi_material",
        "wipe_tower", "wipe_tower_width", "wipe_tower_brim_width", "wipe_tower_cone_angle", "wipe_tower_extra_spacing", "wipe_tower_extra_flow", "wipe_tower_extruder",
        "extruder_colour", "filament_colour", "material_colour", "max_print_height", "printer_model", "printer_notes", "printer_technology",
        // These values are necessary to construct SlicingParameters by the Canvas3D variable layer height editor.
        "layer_height", "first_layer_height", "min_layer_height", "max_layer_height",
        "brim_width", "perimeters", "perimeter_extruder", "fill_density", "infill_extruder", "top_solid_layers",
        "support_material", "support_material_extruder", "support_material_interface_extruder",
        "support_material_contact_distance", "support_material_bottom_contact_distance", "raft_layers"
        }))
    , sidebar(new Sidebar(q))
    , notification_manager(std::make_unique<NotificationManager>(q))
    , user_account(std::make_unique<UserAccount>(q, wxGetApp().app_config, wxGetApp().get_instance_hash_string()))
    , m_worker{ q, std::make_unique<NotificationProgressIndicator>(notification_manager.get()), "ui_worker" }
    , m_sla_import_dlg{ new SLAImportDialog{q} }
    , delayed_scene_refresh(false)
    , view_toolbar(GLToolbar::Radio, "View")
    , collapse_toolbar(GLToolbar::Normal, "Collapse")
    , m_project_filename(wxEmptyString)
{}

void Plater::priv::init()
{
    for (int i = 0; i < s_multiple_beds.get_max_beds(); ++i) {
        gcode_results.emplace_back();
        fff_prints.emplace_back(std::make_unique<Print>());
        sla_prints.emplace_back(std::make_unique<SLAPrint>());
    }
    background_process.set_fff_print(fff_prints.front().get());
    background_process.set_sla_print(sla_prints.front().get());
    background_process.set_gcode_result(&gcode_results.front());
    background_process.set_thumbnail_cb([this](const ThumbnailsParams& params) { return this->generate_thumbnails(params, Camera::EType::Ortho); });
    background_process.set_slicing_completed_event(EVT_SLICING_COMPLETED);
    background_process.set_finished_event(EVT_PROCESS_COMPLETED);
    background_process.set_export_began_event(EVT_EXPORT_BEGAN);
    // Default printer technology for default config.
    background_process.select_technology(this->printer_technology);
    // Register progress callback from the Print class to the Plater.

    auto statuscb = [this](const Slic3r::PrintBase::SlicingStatus &status) {
        wxQueueEvent(this->q, new Slic3r::SlicingStatusEvent(EVT_SLICING_UPDATE, 0, status));
    };
    std::for_each(fff_prints.begin(), fff_prints.end(), [statuscb](std::unique_ptr<Print>& p)    { p->set_status_callback(statuscb); });
    std::for_each(sla_prints.begin(), sla_prints.end(), [statuscb](std::unique_ptr<SLAPrint>& p) { p->set_status_callback(statuscb); });
    this->q->Bind(EVT_SLICING_UPDATE, &priv::on_slicing_update, this);

    view3D = new View3D(q, bed, &model, config, &background_process);
    preview = new Preview(q, bed, &model, config, &background_process, &gcode_results, [this]() { schedule_background_process(); });

    // set default view_toolbar icons size equal to GLGizmosManager::Default_Icons_Size
    view_toolbar.set_icons_size(GLGizmosManager::Default_Icons_Size);

    panels.push_back(view3D);
    panels.push_back(preview);

    this->background_process_timer.SetOwner(this->q, 0);
    this->q->Bind(wxEVT_TIMER, [this](wxTimerEvent &evt)
    {
        if (!this->suppressed_backround_processing_update)
            this->update_restart_background_process(false, false);
    });

    update();

    auto *hsizer = new wxBoxSizer(wxHORIZONTAL);
    panel_sizer = new wxBoxSizer(wxHORIZONTAL);
    panel_sizer->Add(view3D, 1, wxEXPAND | wxALL, 0);
    panel_sizer->Add(preview, 1, wxEXPAND | wxALL, 0);
    hsizer->Add(panel_sizer, 1, wxEXPAND | wxALL, 0);
    hsizer->Add(sidebar, 0, wxEXPAND | wxLEFT | wxRIGHT, 0);
    q->SetSizer(hsizer);

    if (wxGetApp().is_editor()) {
        menus.init(q);

        // Events:

        // Preset change event
        this->q->Bind(EVT_OBJ_LIST_OBJECT_SELECT,       [this](wxEvent&)     { priv::selection_changed(); });
        this->q->Bind(EVT_SCHEDULE_BACKGROUND_PROCESS,  [this](SimpleEvent&) { this->schedule_background_process(); });
    }

    wxGLCanvas* view3D_canvas = view3D->get_wxglcanvas();

    if (wxGetApp().is_editor()) {
        // 3DScene events:
        view3D_canvas->Bind(EVT_GLCANVAS_SCHEDULE_BACKGROUND_PROCESS, [this](SimpleEvent&) { this->schedule_background_process(); });
        view3D_canvas->Bind(EVT_GLCANVAS_OBJECT_SELECT, &priv::on_object_select, this);
        view3D_canvas->Bind(EVT_GLCANVAS_RIGHT_CLICK, &priv::on_right_click, this);
        view3D_canvas->Bind(EVT_GLCANVAS_REMOVE_OBJECT, [this](SimpleEvent&) { q->remove_selected(); });
        view3D_canvas->Bind(EVT_GLCANVAS_ARRANGE, [this](SimpleEvent&) { this->q->arrange(false); });
        view3D_canvas->Bind(EVT_GLCANVAS_ARRANGE_CURRENT_BED, [this](SimpleEvent&) { this->q->arrange(true); });
        view3D_canvas->Bind(EVT_GLCANVAS_SELECT_ALL, [this](SimpleEvent&) { this->q->select_all(); });
        view3D_canvas->Bind(EVT_GLCANVAS_QUESTION_MARK, [](SimpleEvent&) { wxGetApp().keyboard_shortcuts(); });
        view3D_canvas->Bind(EVT_GLCANVAS_INCREASE_INSTANCES, [this](Event<int>& evt)
            { if (evt.data == 1) this->q->increase_instances(); else if (this->can_decrease_instances()) this->q->decrease_instances(); });
        view3D_canvas->Bind(EVT_GLCANVAS_INSTANCE_MOVED, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_FORCE_UPDATE, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_WIPETOWER_TOUCHED,[this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_INSTANCE_ROTATED, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_RESET_SKEW, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_INSTANCE_SCALED, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_INSTANCE_MIRRORED, [this](SimpleEvent&) { update(); });
        view3D_canvas->Bind(EVT_GLCANVAS_ENABLE_ACTION_BUTTONS, [this](Event<bool>& evt) { this->sidebar->enable_buttons(evt.data); });
        view3D_canvas->Bind(EVT_GLCANVAS_UPDATE_GEOMETRY, &priv::on_update_geometry, this);
        view3D_canvas->Bind(EVT_GLCANVAS_MOUSE_DRAGGING_STARTED, &priv::on_3dcanvas_mouse_dragging_started, this);
        view3D_canvas->Bind(EVT_GLCANVAS_MOUSE_DRAGGING_FINISHED, &priv::on_3dcanvas_mouse_dragging_finished, this);
        view3D_canvas->Bind(EVT_GLCANVAS_TAB, [this](SimpleEvent&) { select_next_view_3D(); });
        view3D_canvas->Bind(EVT_GLCANVAS_RESETGIZMOS, [this](SimpleEvent&) { reset_all_gizmos(); });
        view3D_canvas->Bind(EVT_GLCANVAS_UNDO, [this](SimpleEvent&) { this->undo(); });
        view3D_canvas->Bind(EVT_GLCANVAS_REDO, [this](SimpleEvent&) { this->redo(); });
        view3D_canvas->Bind(EVT_GLCANVAS_COLLAPSE_SIDEBAR, [this](SimpleEvent&) { this->q->collapse_sidebar(!this->q->is_sidebar_collapsed());  });
        view3D_canvas->Bind(EVT_GLCANVAS_RESET_LAYER_HEIGHT_PROFILE, [this](SimpleEvent&) { this->view3D->get_canvas3d()->reset_layer_height_profile(); });
        view3D_canvas->Bind(EVT_GLCANVAS_ADAPTIVE_LAYER_HEIGHT_PROFILE, [this](Event<float>& evt) { this->view3D->get_canvas3d()->adaptive_layer_height_profile(evt.data); });
        view3D_canvas->Bind(EVT_GLCANVAS_SMOOTH_LAYER_HEIGHT_PROFILE, [this](HeightProfileSmoothEvent& evt) { this->view3D->get_canvas3d()->smooth_layer_height_profile(evt.data); });
        view3D_canvas->Bind(EVT_GLCANVAS_RELOAD_FROM_DISK, [this](SimpleEvent&) { this->reload_all_from_disk(); });

        // 3DScene/Toolbar:
        view3D_canvas->Bind(EVT_GLTOOLBAR_ADD, &priv::on_action_add, this);
        view3D_canvas->Bind(EVT_GLTOOLBAR_DELETE, [this](SimpleEvent&) { q->remove_selected(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_DELETE_ALL, [this](SimpleEvent&) { delete_all_objects_from_model(); });
//        view3D_canvas->Bind(EVT_GLTOOLBAR_DELETE_ALL, [q](SimpleEvent&) { q->reset_with_confirm(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_ARRANGE, [this](SimpleEvent&) { this->q->arrange(false); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_ARRANGE_CURRENT_BED, [this](SimpleEvent&) { this->q->arrange(true); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_COPY, [this](SimpleEvent&) { q->copy_selection_to_clipboard(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_PASTE, [this](SimpleEvent&) { q->paste_from_clipboard(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_MORE, [this](SimpleEvent&) { q->increase_instances(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_FEWER, [this](SimpleEvent&) { q->decrease_instances(); });
        view3D_canvas->Bind(EVT_GLTOOLBAR_SPLIT_OBJECTS, &priv::on_action_split_objects, this);
        view3D_canvas->Bind(EVT_GLTOOLBAR_SPLIT_VOLUMES, &priv::on_action_split_volumes, this);
        view3D_canvas->Bind(EVT_GLTOOLBAR_LAYERSEDITING, &priv::on_action_layersediting, this);
    }
    view3D_canvas->Bind(EVT_GLCANVAS_UPDATE_BED_SHAPE, [this](SimpleEvent&) { q->set_bed_shape(); });

    // Preview events:
    preview->get_wxglcanvas()->Bind(EVT_GLCANVAS_QUESTION_MARK, [](SimpleEvent&) { wxGetApp().keyboard_shortcuts(); });
    preview->get_wxglcanvas()->Bind(EVT_GLCANVAS_UPDATE_BED_SHAPE, [this](SimpleEvent&) { q->set_bed_shape(); });
    if (wxGetApp().is_editor()) {
        preview->get_wxglcanvas()->Bind(EVT_GLCANVAS_TAB, [this](SimpleEvent&) { select_next_view_3D(); });
        preview->get_wxglcanvas()->Bind(EVT_GLCANVAS_COLLAPSE_SIDEBAR, [this](SimpleEvent&) { this->q->collapse_sidebar(!this->q->is_sidebar_collapsed());  });
    }

    if (wxGetApp().is_gcode_viewer())
        preview->Bind(EVT_GLCANVAS_RELOAD_FROM_DISK, [this](SimpleEvent&) { this->q->reload_gcode_from_disk(); });

    if (wxGetApp().is_editor()) {
        q->Bind(EVT_SLICING_COMPLETED, &priv::on_slicing_completed, this);
        q->Bind(EVT_PROCESS_COMPLETED, &priv::on_process_completed, this);
        q->Bind(EVT_EXPORT_BEGAN, &priv::on_export_began, this);
        q->Bind(EVT_GLVIEWTOOLBAR_3D, [this](SimpleEvent&) { q->select_view_3D("3D"); });
        q->Bind(EVT_GLVIEWTOOLBAR_PREVIEW, [this](SimpleEvent&) { q->select_view_3D("Preview"); });
        q->Bind(EVT_REGENERATE_BED_THUMBNAILS, &priv::regenerate_thumbnails, this);
    }

    // Drop target:
    main_frame->SetDropTarget(new PlaterDropTarget(*main_frame, *q));   // if my understanding is right, wxWindow takes the owenership
    q->Layout();

    set_current_panel(wxGetApp().is_editor() ? static_cast<wxPanel*>(view3D) : static_cast<wxPanel*>(preview));

    // updates camera type from .ini file
    camera.enable_update_config_on_type_change(true);
    camera.set_type(wxGetApp().app_config->get("use_perspective_camera"));

    // Load the 3DConnexion device database.
    mouse3d_controller.load_config(*wxGetApp().app_config);
	// Start the background thread to detect and connect to a HID device (Windows and Linux).
	// Connect to a 3DConnextion driver (OSX).
    mouse3d_controller.init();
#ifdef _WIN32
    // Register an USB HID (Human Interface Device) attach event. evt contains Win32 path to the USB device containing VID, PID and other info.
    // This event wakes up the Mouse3DController's background thread to enumerate HID devices, if the VID of the callback event
    // is one of the 3D Mouse vendors (3DConnexion or Logitech).
    this->q->Bind(EVT_HID_DEVICE_ATTACHED, [this](HIDDeviceAttachedEvent &evt) {
    	mouse3d_controller.device_attached(evt.data);
        });
    this->q->Bind(EVT_HID_DEVICE_DETACHED, [this](HIDDeviceAttachedEvent& evt) {
        mouse3d_controller.device_detached(evt.data);
        });
#endif /* _WIN32 */

	//notification_manager = new NotificationManager(this->q);

    if (wxGetApp().is_editor()) {
        this->q->Bind(EVT_EJECT_DRIVE_NOTIFICAION_CLICKED, [this](EjectDriveNotificationClickedEvent&) { this->q->eject_drive(); });
        this->q->Bind(EVT_EXPORT_GCODE_NOTIFICAION_CLICKED, [this](ExportGcodeNotificationClickedEvent&) { this->q->export_gcode(true); });
        this->q->Bind(EVT_PRESET_UPDATE_AVAILABLE_CLICKED, [](PresetUpdateAvailableClickedEvent&) {
            GUI_App &app = wxGetApp();
            app.get_preset_updater_wrapper()->on_update_notification_confirm();
        });
        this->q->Bind(EVT_REMOVABLE_DRIVE_EJECTED, [this](RemovableDriveEjectEvent &evt) {
		    if (evt.data.second) {
			    q->show_action_buttons();
                notification_manager->close_notification_of_type(NotificationType::ExportFinished);
                notification_manager->push_notification(NotificationType::CustomNotification,
                                                        NotificationManager::NotificationLevel::RegularNotificationLevel,
                                                        format(_L("Successfully unmounted. The device %s(%s) can now be safely removed from the computer."), evt.data.first.name, evt.data.first.path)
                    );
            } else {
                notification_manager->close_notification_of_type(NotificationType::ExportFinished);
                notification_manager->push_notification(NotificationType::CustomNotification,
                                                        NotificationManager::NotificationLevel::ErrorNotificationLevel,
                                                        format(_L("Ejecting of device %s(%s) has failed."), evt.data.first.name, evt.data.first.path)
                    );
            }
	    });
        this->q->Bind(EVT_REMOVABLE_DRIVES_CHANGED, [this](RemovableDrivesChangedEvent &) {
		    q->show_action_buttons(); 
		    // Close notification ExportingFinished but only if last export was to removable
		    notification_manager->device_ejected();
	    });

        this->q->Bind(EVT_REMOVABLE_DRIVE_ADDED, [this](wxCommandEvent& evt) {
            boost::system::error_code ec;
            if (!fs::exists(fs::path(evt.GetString().utf8_string()) / "prusa_printer_settings.ini", ec) || ec)
                return;
            if (evt.GetInt() == 0) { // not at startup, show dialog
                    wxGetApp().open_wifi_config_dialog(false, evt.GetString());
            } else { // at startup, show only notification
                notification_manager->push_notification(NotificationType::WifiConfigFileDetected
                    , NotificationManager::NotificationLevel::ImportantNotificationLevel
                    // TRN Text of notification when Slicer starts and usb stick with printer settings ini file is present 
                    , _u8L("Printer configuration file detected on removable media.")
                    // TRN Text of hypertext of notification when Slicer starts and usb stick with printer settings ini file is present 
                    , _u8L("Write Wi-Fi credentials."), [evt/*, CONFIG_FILE_NAME*/](wxEvtHandler* evt_hndlr){
                        wxGetApp().open_wifi_config_dialog(true, evt.GetString());
                        return true;});
            }
        });

        // Start the background thread and register this window as a target for update events.
        wxGetApp().removable_drive_manager()->init(this->q);
#ifdef _WIN32
        // Trigger enumeration of removable media on Win32 notification.
        this->q->Bind(EVT_VOLUME_ATTACHED, [this](VolumeAttachedEvent &evt) { wxGetApp().removable_drive_manager()->volumes_changed(); });
        this->q->Bind(EVT_VOLUME_DETACHED, [this](VolumeDetachedEvent &evt) { wxGetApp().removable_drive_manager()->volumes_changed(); });
#endif /* _WIN32 */
    }

    // Initialize the Undo / Redo stack with a first snapshot.
    this->take_snapshot(_L("New Project"), UndoRedo::SnapshotType::ProjectSeparator);
    // Reset the "dirty project" flag.
    m_undo_redo_stack_main.mark_current_as_saved();
    dirty_state.update_from_undo_redo_stack(false);
    
    this->q->Bind(EVT_LOAD_MODEL_OTHER_INSTANCE, [this](LoadFromOtherInstanceEvent& evt) {
        BOOST_LOG_TRIVIAL(trace) << "Received load from other instance event.";
        wxArrayString input_files;
        for (size_t i = 0; i < evt.data.size(); ++i) {
            input_files.push_back(from_u8(evt.data[i].string()));
        }
        wxGetApp().mainframe->Raise();
        this->q->load_files(input_files);
    });
    this->q->Bind(EVT_INSTANCE_GO_TO_FRONT, [this](InstanceGoToFrontEvent&) {
        bring_instance_forward();
    });
    // Downloader and USerAccount Events doesnt need to be binded in viewer.
    // Not binding Account events prevents it from loging in.
    if (wxGetApp().is_editor()) {
        this->q->Bind(EVT_START_DOWNLOAD_OTHER_INSTANCE, [](StartDownloadOtherInstanceEvent& evt) {
            BOOST_LOG_TRIVIAL(trace) << "Received url from other instance event.";
            wxGetApp().mainframe->Raise();
            for (size_t i = 0; i < evt.data.size(); ++i) {
                wxGetApp().start_download(evt.data[i]);
            }
        }); 
        this->q->Bind(EVT_LOGIN_OTHER_INSTANCE, [this](LoginOtherInstanceEvent& evt) {
            BOOST_LOG_TRIVIAL(trace) << "Received login from other instance event.";
            user_account->on_login_code_recieved(evt.data);
        });
        this->q->Bind(EVT_STORE_READ_REQUEST, [this](SimpleEvent& evt) {
            BOOST_LOG_TRIVIAL(debug) << "Received store read request from other instance event.";
            user_account->on_store_read_request();
        });
        
        this->q->Bind(EVT_LOGIN_VIA_WIZARD, [this](Event<std::string> &evt) {
            BOOST_LOG_TRIVIAL(trace) << "Received login from wizard.";
            user_account->on_login_code_recieved(evt.data);
        });
        this->q->Bind(EVT_OPEN_PRUSAAUTH, [this](OpenPrusaAuthEvent& evt) {
            BOOST_LOG_TRIVIAL(info)  << "open login browser: " << evt.data.first;
            std::string dialog_msg;
            login_dialog = new LoginWebViewDialog(this->q, dialog_msg, evt.data.first, this->q);
            if (login_dialog->ShowModal() == wxID_OK) {
                user_account->on_login_code_recieved(dialog_msg);
            }
            if (login_dialog != nullptr) {
                this->q->RemoveChild(login_dialog);
                login_dialog->Destroy();
                login_dialog = nullptr;
            }
        });

        auto open_external_login = [this](wxCommandEvent& evt){
             DownloaderUtils::Worker::perform_url_register();
#if defined(__linux__)
            // Remove all desktop files registering prusaslicer:// url done by previous versions.
            DesktopIntegrationDialog::undo_downloader_registration_rigid();
#if defined(SLIC3R_DESKTOP_INTEGRATION)
            if (DownloaderUtils::Worker::perform_registration_linux) 
                DesktopIntegrationDialog::perform_downloader_desktop_integration();
#endif // SLIC3R_DESKTOP_INTEGRATION                
#endif // __linux__
            std::string service;
            if (evt.GetString().Find(L"accounts.google.com") != wxNOT_FOUND) {
                service = "google";
            } else if (evt.GetString().Find(L"appleid.apple.com") != wxNOT_FOUND) {
                service  = "apple";
            } else if (evt.GetString().Find(L"facebook.com") != wxNOT_FOUND) {
                service = "facebook";
            }
            wxString url = user_account->get_login_redirect_url(service);
            wxGetApp().open_login_browser_with_dialog(into_u8(url));
        };

        this->q->Bind(EVT_OPEN_EXTERNAL_LOGIN_WIZARD, open_external_login);
        this->q->Bind(EVT_OPEN_EXTERNAL_LOGIN, open_external_login);

        this->q->Bind(EVT_UA_LOGGEDOUT, [this](UserAccountSuccessEvent& evt) {
            user_account->clear();
            std::string text = _u8L("Logged out from Prusa Account.");
            this->notification_manager->close_notification_of_type(NotificationType::UserAccountID);
            this->notification_manager->push_notification(NotificationType::UserAccountID, NotificationManager::NotificationLevel::ImportantNotificationLevel, text);
            this->main_frame->on_account_logout();
            this->main_frame->refresh_account_menu(true);
            // Update sidebar printer status
            sidebar->update_printer_presets_combobox();
            wxGetApp().update_wizard_login_page();
            this->show_action_buttons(this->ready_to_slice);
        });

        auto on_id_user_success = [this](UserAccountSuccessEvent& evt, bool after_token_success) {
            if (login_dialog != nullptr) {
                login_dialog->EndModal(wxID_CANCEL);
            }
            // There are multiple handlers and we want to notify all
            evt.Skip();
            std::string who = user_account->get_username();
            std::string username;
            if (user_account->on_user_id_success(evt.data, username, after_token_success)) {
                if (who != username) {
                    // show notification only on login (not refresh).
                    std::string text = format(_u8L("Logged to Prusa Account as %1%."), username);
                    // login notification
                    this->notification_manager->close_notification_of_type(NotificationType::UserAccountID);
                    this->notification_manager->close_notification_of_type(NotificationType::FailedSecretVendorUpdateSync);
                    // show connect tab
                    this->notification_manager->push_notification(NotificationType::UserAccountID, NotificationManager::NotificationLevel::ImportantNotificationLevel, text);

                    this->main_frame->on_account_login(user_account->get_access_token());

                    // notify other instances
                    Slic3r::GUI::wxGetApp().other_instance_message_handler()->multicast_message("STORE_READ"); 
                } else {
                    // refresh do different operations than on_account_login
                    this->main_frame->on_account_did_refresh(user_account->get_access_token());
                }
                // Update User name in TopBar
                this->main_frame->refresh_account_menu();
                wxGetApp().update_wizard_login_page();
                this->show_action_buttons(this->ready_to_slice);
 
            } else {
                // data were corrupt and username was not retrieved
                // procced as if EVT_UA_RESET was recieved
                BOOST_LOG_TRIVIAL(error) << "Reseting Prusa Account communication. Recieved data were corrupt.";
                user_account->clear();
                this->notification_manager->close_notification_of_type(NotificationType::UserAccountID);
                this->notification_manager->push_notification(NotificationType::UserAccountID, NotificationManager::NotificationLevel::WarningNotificationLevel, _u8L("Failed to connect to Prusa Account."));
                this->main_frame->on_account_logout();
                // Update User name in TopBar
                this->main_frame->refresh_account_menu(true);
                // Update sidebar printer status
                sidebar->update_printer_presets_combobox();
            }    
        };

        this->q->Bind(EVT_UA_ID_USER_SUCCESS, [on_id_user_success](UserAccountSuccessEvent& evt) {
            on_id_user_success(evt, false);
        });
        this->q->Bind(EVT_UA_ID_USER_SUCCESS_AFTER_TOKEN_SUCCESS, [on_id_user_success](UserAccountSuccessEvent& evt) {
            on_id_user_success(evt, true);
        });

        this->q->Bind(EVT_UA_RESET, [this](UserAccountFailEvent& evt) {
            BOOST_LOG_TRIVIAL(error) << "Reseting Prusa Account communication. Error message: " << evt.data;
            user_account->clear();
            this->notification_manager->close_notification_of_type(NotificationType::UserAccountID);
            this->notification_manager->push_notification(NotificationType::UserAccountID, NotificationManager::NotificationLevel::WarningNotificationLevel, _u8L("Failed to connect to Prusa Account."));
            this->main_frame->on_account_logout();
            // Update User name in TopBar
            this->main_frame->refresh_account_menu(true);
            // Update sidebar printer status
            sidebar->update_printer_presets_combobox();
            });
        this->q->Bind(EVT_UA_FAIL, [this](UserAccountFailEvent& evt) {
            BOOST_LOG_TRIVIAL(error) << "Failed communication with Prusa Account: " << evt.data;
            user_account->on_communication_fail();
        });
        this->q->Bind(EVT_UA_RACE_LOST, [this](UserAccountFailEvent& evt) {
            BOOST_LOG_TRIVIAL(debug) << "Renew token race lost: " << evt.data;
            user_account->on_race_lost();
        });
        
        this->q->Bind(EVT_UA_PRUSACONNECT_STATUS_SUCCESS, [this](UserAccountSuccessEvent& evt) {
            std::string text;
            bool printers_changed = false;
            if (user_account->on_connect_printers_success(evt.data, wxGetApp().app_config, printers_changed)) {
                if (printers_changed) {
                    sidebar->update_printer_presets_combobox();
                }
            } else {
                // message was corrupt, procceed like EVT_UA_FAIL
                user_account->on_communication_fail();
            }
        });
        this->q->Bind(EVT_UA_PRUSACONNECT_PRINTER_MODELS_SUCCESS, [this](UserAccountSuccessEvent& evt) {
            std::string text;
            bool printers_changed = false;
            if (user_account->on_connect_uiid_map_success(evt.data, wxGetApp().app_config, printers_changed)) {
                if (printers_changed) {
                    sidebar->update_printer_presets_combobox();
                }
            }
            else {
                // message was corrupt, procceed like EVT_UA_FAIL
                user_account->on_communication_fail();
            }
        });
        this->q->Bind(EVT_UA_AVATAR_SUCCESS, [this](UserAccountSuccessEvent& evt) {   
            boost::filesystem::path path = user_account->get_avatar_path(true);
            FILE* file; 
            file = boost::nowide::fopen(path.generic_string().c_str(), "wb");
            if (file == NULL) {
                BOOST_LOG_TRIVIAL(error) << "Failed to create file to store avatar picture at: " << path;
                return;
            }
            fwrite(evt.data.c_str(), 1, evt.data.size(), file);
            fclose(file);
            this->main_frame->refresh_account_menu(true);
        }); 
        this->q->Bind(EVT_UA_PRUSACONNECT_PRINTER_DATA_SUCCESS, [this](UserAccountSuccessEvent& evt) {
            this->user_account->set_current_printer_data(evt.data);
            wxGetApp().handle_connect_request_printer_select_inner(evt.data);
        });
        this->q->Bind(EVT_UA_PRUSACONNECT_PRINTER_DATA_FAIL, [this](UserAccountFailEvent& evt) {
            BOOST_LOG_TRIVIAL(error) << "Failed communication with Connect Printer endpoint: " << evt.data;
            user_account->on_communication_fail();
            std::string msg = _u8L("Failed to select printer from Prusa Connect.");
            this->notification_manager->close_notification_of_type(NotificationType::SelectFilamentFromConnect);
            this->notification_manager->push_notification(NotificationType::SelectFilamentFromConnect, NotificationManager::NotificationLevel::WarningNotificationLevel, msg);
        });

        this->q->Bind(EVT_UA_REFRESH_TIME, [this](UserAccountTimeEvent& evt) {
            this->user_account->set_refresh_time(evt.data);
        });
        this->q->Bind(EVT_UA_ENQUEUED_REFRESH, [this](SimpleEvent& evt) {
             this->main_frame->on_account_will_refresh();
        });

        this->q->Bind(EVT_PRINTABLES_CONNECT_PRINT, [this](wxCommandEvent& evt) {
            if (!this->user_account->is_logged()) {
                // show login dialog instead of print dialog
                this->user_account->do_login();
                return;
            }
            this->q->printables_to_connect_gcode(into_u8(evt.GetString()));
        });

        this->q->Bind(EVT_UA_RETRY_NOTIFY, [this](UserAccountFailEvent& evt) {
            this->notification_manager->close_notification_of_type(NotificationType::AccountTransientRetry);
            this->notification_manager->push_notification(NotificationType::AccountTransientRetry
                , NotificationManager::NotificationLevel::RegularNotificationLevel
                , evt.data
                // TRN: This is a hyperlink in a notification. It is preceded by a message from PrusaAccount (therefore not in this dictionary)
                // saying something like "connection not established, I will keep trying".
                , _u8L("Stop now.")
                , [this](wxEvtHandler* ) {
                    this->user_account->do_logout();
			        return true; 
		        });
  
        });
        this->q->Bind(EVT_UA_CLOSE_RETRY_NOTIFICATION, [this](SimpleEvent& evt) {
            this->notification_manager->close_notification_of_type(NotificationType::AccountTransientRetry);
        });
    }

	wxGetApp().other_instance_message_handler()->init(this->q);

    // collapse sidebar according to saved value
    if (wxGetApp().is_editor()) {
        bool is_collapsed = get_config_bool("collapsed_sidebar");
        sidebar->collapse(is_collapsed);
    }
}

Plater::priv::~priv()
{
    if (config != nullptr)
        delete config;
    // Saves the database of visited (already shown) hints into hints.ini.
    notification_manager->deactivate_loaded_hints();
}

void Plater::priv::update(unsigned int flags)
{
    unsigned int update_status = 0;
    const bool force_background_processing_restart = this->printer_technology == ptSLA || (flags & (unsigned int)UpdateParams::FORCE_BACKGROUND_PROCESSING_UPDATE);
    if (force_background_processing_restart)
        // Update the SLAPrint from the current Model, so that the reload_scene()
        // pulls the correct data.
        update_status = this->update_background_process(false, flags & (unsigned int)UpdateParams::POSTPONE_VALIDATION_ERROR_MESSAGE);
    s_multiple_beds.update_shown_beds(model, q->build_volume(), true);
    this->view3D->reload_scene(false, flags & (unsigned int)UpdateParams::FORCE_FULL_SCREEN_REFRESH);
    this->preview->reload_print();
    if (force_background_processing_restart)
        this->restart_background_process(update_status);
    else
        this->schedule_background_process();
}

void Plater::priv::select_view(const std::string& direction)
{
    if (current_panel == view3D)
        view3D->select_view(direction);
    else if (current_panel == preview)
        preview->select_view(direction);
}

void Plater::priv::apply_free_camera_correction(bool apply/* = true*/)
{
    camera.set_type(wxGetApp().app_config->get("use_perspective_camera"));
    if (apply && !wxGetApp().app_config->get_bool("use_free_camera"))
        camera.recover_from_free_camera();
}

void Plater::priv::select_view_3D(const std::string& name)
{
    if (name == "3D")
        set_current_panel(view3D);
    else if (name == "Preview")
        set_current_panel(preview);

    apply_free_camera_correction(false);
}

void Plater::priv::select_next_view_3D()
{
    if (current_panel == view3D)
        set_current_panel(preview);
    else if (current_panel == preview)
        set_current_panel(view3D);
}

void Plater::priv::collapse_sidebar(bool collapse)
{
    sidebar->collapse(collapse);

    // Now update the tooltip in the toolbar.
    std::string new_tooltip = collapse
                              ? _u8L("Expand sidebar")
                              : _u8L("Collapse sidebar");
    new_tooltip += " [Shift+Tab]";
    int id = collapse_toolbar.get_item_id("collapse_sidebar");
    collapse_toolbar.set_tooltip(id, new_tooltip);
    collapse_toolbar.set_enabled(collapse || wxGetApp().app_config->get_bool("show_collapse_button"));

    notification_manager->set_sidebar_collapsed(collapse);
}


void Plater::priv::reset_all_gizmos()
{
    view3D->get_canvas3d()->reset_all_gizmos();
}

// Called after the Preferences dialog is closed and the program settings are saved.
// Update the UI based on the current preferences.
void Plater::priv::update_ui_from_settings()
{
    apply_free_camera_correction();

    view3D->get_canvas3d()->update_ui_from_settings();
    preview->get_canvas3d()->update_ui_from_settings();

    sidebar->update_ui_from_settings();
    // update Cut gizmo, if it's open
    q->canvas3D()->update_gizmos_on_off_state();
    q->set_current_canvas_as_dirty();
    q->get_current_canvas3D()->request_extra_frame();
}

// Called after the print technology was changed.
// Update the tooltips for "Switch to Settings" button in maintoolbar
void Plater::priv::update_main_toolbar_tooltips()
{
    view3D->get_canvas3d()->update_tooltip_for_settings_item_in_main_toolbar();
}

bool Plater::priv::get_config_bool(const std::string &key) const
{
    return wxGetApp().app_config->get_bool(key);
}

void Plater::notify_about_installed_presets()
{
    const auto& names = wxGetApp().preset_bundle->tmp_installed_presets;
    // show notification about temporarily installed presets
    if (!names.empty()) {
        std::string notif_text = into_u8(_L_PLURAL("The preset below was temporarily installed on the active instance of PrusaSlicer",
            "The presets below were temporarily installed on the active instance of PrusaSlicer", names.size())) + ":";
        for (const std::string& name : names)
            notif_text += "\n - " + name;
        get_notification_manager()->push_notification(NotificationType::CustomNotification,
            NotificationManager::NotificationLevel::PrintInfoNotificationLevel, notif_text);
    }
}

std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_files, bool load_model, bool load_config, bool imperial_units/* = false*/)
{
    if (input_files.empty()) { return std::vector<size_t>(); }

    auto *nozzle_dmrs = config->opt<ConfigOptionFloats>("nozzle_diameter");

    PlaterAfterLoadAutoArrange plater_after_load_auto_arrange;

    bool one_by_one = input_files.size() == 1 || printer_technology == ptSLA || nozzle_dmrs->values.size() <= 1;
    if (! one_by_one) {
        for (const auto &path : input_files) {
            if (std::regex_match(path.string(), pattern_bundle)) {
                one_by_one = true;
                break;
            }
        }
    }

    const auto loading = _L("Loading") + dots;

    // The situation with wxProgressDialog is quite interesting here.
    // On Linux (only), there are issues when FDM/SLA is switched during project file loading (disabling of controls,
    // see a comment below). This can be bypassed by creating the wxProgressDialog on heap and destroying it
    // when loading a project file. However, creating the dialog on heap causes issues on macOS, where it does not
    // appear at all. Therefore, we create the dialog on stack on Win and macOS, and on heap on Linux, which
    // is the only system that needed the workarounds in the first place.
#ifdef __linux__
    auto progress_dlg = new wxProgressDialog(loading, "", 100, find_toplevel_parent(q), wxPD_APP_MODAL | wxPD_AUTO_HIDE);
    Slic3r::ScopeGuard([&progress_dlg](){ if (progress_dlg) progress_dlg->Destroy(); progress_dlg = nullptr; });
#else
    wxProgressDialog progress_dlg_stack(loading, "", 100, find_toplevel_parent(q), wxPD_APP_MODAL | wxPD_AUTO_HIDE);
    wxProgressDialog* progress_dlg = &progress_dlg_stack;    
#endif

    wxBusyCursor busy;

    auto *extra_model = (!load_model || one_by_one) ? nullptr : new Slic3r::Model();
    std::vector<size_t> obj_idxs;
    boost::optional<Semver> prusaslicer_generator_version;

    int answer_convert_from_meters          = wxOK_DEFAULT;
    int answer_convert_from_imperial_units  = wxOK_DEFAULT;
    int answer_consider_as_multi_part_objects = wxOK_DEFAULT;
    bool apply_step_import_parameters_to_all   { false }; 

    bool in_temp = false; 
    const fs::path temp_path = wxStandardPaths::Get().GetTempDir().utf8_str().data();

    size_t input_files_size = input_files.size();
    for (size_t i = 0; i < input_files_size; ++i) {
#ifdef _WIN32
        auto path = input_files[i];
        // On Windows, we swap slashes to back slashes, see GH #6803 as read_from_file() does not understand slashes on Windows thus it assignes full path to names of loaded objects.
        path.make_preferred();
#else // _WIN32
        // Don't make a copy on Posix. Slash is a path separator, back slashes are not accepted as a substitute.
        const auto &path = input_files[i];
#endif // _WIN32
        in_temp = (path.parent_path() == temp_path);
        const boost::filesystem::path filename = path.filename();

        const bool type_step = std::regex_match(path.string(), pattern_step);
        if (type_step && !apply_step_import_parameters_to_all && 
            wxGetApp().app_config->get_bool("show_step_import_parameters")) {

            double linear_precision = string_to_double_decimal_point(wxGetApp().app_config->get("linear_precision"));
            double angle_precision = string_to_double_decimal_point(wxGetApp().app_config->get("angle_precision"));

            LoadStepDialog dlg(q, filename.string(), linear_precision, angle_precision, (input_files_size - i) > 1);
            if (dlg.ShowModal() == wxID_OK) {
                wxGetApp().app_config->set("linear_precision", float_to_string_decimal_point(dlg.get_linear_precision()));
                wxGetApp().app_config->set("angle_precision", float_to_string_decimal_point(dlg.get_angle_precision()));
                if (dlg.IsCheckBoxChecked())
                    wxGetApp().app_config->set("show_step_import_parameters", "0");
                apply_step_import_parameters_to_all = dlg.IsApplyToAllClicked();
            } else
                continue;
        }

        if (progress_dlg) {
            progress_dlg->Update(static_cast<int>(100.0f * static_cast<float>(i) / static_cast<float>(input_files.size())), _L("Loading file") + ": " + from_path(filename));
            progress_dlg->Fit();
        }

        const bool type_3mf = std::regex_match(path.string(), pattern_3mf) || std::regex_match(path.string(), pattern_zip);
        const bool type_any_amf = !type_3mf && std::regex_match(path.string(), pattern_any_amf);
        const bool type_printRequest =  std::regex_match(path.string(), pattern_printRequest);

        if (type_printRequest && printer_technology != ptSLA) {
            Slic3r::GUI::show_info(nullptr,
                _L("PrintRequest can only be loaded if an SLA printer is selected."),
                _L("Error!"));
            continue;
        }

        Slic3r::Model model;
        bool is_project_file = false;

#ifdef __linux__
        // On Linux Constructor of the ProgressDialog calls DisableOtherWindows() function which causes a disabling of all children of the find_toplevel_parent(q)
        // And a destructor of the ProgressDialog calls ReenableOtherWindows() function which revert previously disabled children.
        // But if printer technology will be changes during project loading,
        // then related SLA Print and Materials Settings or FFF Print and Filaments Settings will be unparent from the wxNoteBook
        // and that is why they will never be enabled after destruction of the ProgressDialog.
        // So, distroy progress_gialog if we are loading project file
        if (input_files_size == 1 && progress_dlg) {
            progress_dlg->Destroy();
            progress_dlg = nullptr;
        }
#endif

        DynamicPrintConfig config;
        PrinterTechnology loaded_printer_technology{ ptFFF };

        DynamicPrintConfig config_loaded;
        ConfigSubstitutionContext config_substitutions{ ForwardCompatibilitySubstitutionRule::Enable };

        if (!type_3mf)
            load_config = false; // just 3mf file contains config

        FileReader::LoadStats load_stats;

        try {
            if (load_config) {
                model = FileReader::load_model_with_config(path.string(), &config_loaded, &config_substitutions, prusaslicer_generator_version, FileReader::LoadAttribute::CheckVersion, &load_stats);
            }
            else if (load_model) {
                if (type_step) {
                    double linear_precision = string_to_double_decimal_point(wxGetApp().app_config->get("linear_precision"));
                    double angle_precision = string_to_double_decimal_point(wxGetApp().app_config->get("angle_precision"));
                    model = FileReader::load_model(path.string(), FileReader::LoadAttributes{}, &load_stats, 
                                                   std::make_pair(linear_precision, angle_precision));
                }
                else
                    model = FileReader::load_model(path.string(), FileReader::LoadAttributes{}, &load_stats);
            }
        } catch (const ConfigurationError &e) {
            std::string message = GUI::format(_L("Failed loading file \"%1%\" due to an invalid configuration."), filename.string()) + "\n\n" + e.what();
            GUI::show_error(q, message);
            continue;
        } catch (const std::exception &e) {
            GUI::show_error(q, e.what());
            continue;
        }

        if (load_config) {

            if (!config_loaded.empty()) {
                // Based on the printer technology field found in the loaded config, select the base for the config,
                loaded_printer_technology = Preset::printer_technology(config_loaded);

                config.apply(loaded_printer_technology == ptFFF ?
                    static_cast<const ConfigBase&>(FullPrintConfig::defaults()) :
                    static_cast<const ConfigBase&>(SLAFullPrintConfig::defaults()));
                // Set all the nullable values in defaults to nils.
                config.null_nullables();
                // and place the loaded config over the base.
                config += std::move(config_loaded);
            } else { // config_loaded.empty()
                // Detection of possible breaking change in 3MF configuration loading sometimes in future.
                if (prusaslicer_generator_version && // set only when loaded with configuration
                    *prusaslicer_generator_version > Semver(SLIC3R_VERSION)) {
                    wxString title = _L("Configuration was not loaded");
                    const wxString url = "https://prusa.io/3mf-transfer";
                    // TRN: %1% is filename of the project, %2% is url link.
                    wxString message = format_wxstr(_L("<b>Unable to load configuration from project\n\nFile: </b>%1%\n\n"
                        "This project was created in a newer version of PrusaSlicer. Only the geometry was loaded.\n"
                        "Update to the latest version for full compatibility.\nFor more info: <a href=%2%>%2%</a>"),
                        from_path(filename), url);
                    HtmlCapableRichMessageDialog dialog(q, message ,title, wxOK,
                        [&url](const std::string&) { wxGetApp().open_browser_with_warning_dialog(url); });
                    dialog.ShowModal();
                }
            }
            if (!config_substitutions.empty())
                show_substitutions_info(config_substitutions.substitutions, filename.string());

            if (!config.empty()) {
                const auto* post_process = config.opt<ConfigOptionStrings>("post_process");
                if (post_process != nullptr && !post_process->values.empty()) {
                    wxString msg = _L("The selected 3MF file contains a post-processing script.\n"
                                      "Please review the script carefully before exporting G-code.");
                    std::string text;
                    for (const std::string& s : post_process->values)
                        text += s;

                    InfoDialog msg_dlg(nullptr, msg, from_u8(text), true, wxOK | wxICON_WARNING);
                    msg_dlg.set_caption(wxString(SLIC3R_APP_NAME " - ") + _L("Attention!"));
                    msg_dlg.ShowModal();
                }

                Preset::normalize(config); //???
                PresetBundle* preset_bundle = wxGetApp().preset_bundle;
                preset_bundle->load_config_model(filename.string(), std::move(config));
                q->notify_about_installed_presets();

                //if (loaded_printer_technology == ptFFF && load_model)
                //    CustomGCode::update_custom_gcode_per_print_z_from_config(model.custom_gcode_per_print_z(), &preset_bundle->project_config);

                // For exporting from the 3mf we shouldn't check printer_presets for the containing information about "Print Host upload"
                wxGetApp().load_current_presets(false);
                // Update filament colors for the MM-printer profile in the full config
                // to avoid black (default) colors for Extruders in the ObjectList,
                // when for extruder colors are used filament colors
                q->update_filament_colors_in_full_config();
                is_project_file = true;
            }

            this->model.get_custom_gcode_per_print_z_vector() = model.get_custom_gcode_per_print_z_vector();
            this->model.get_wipe_tower_vector() = model.get_wipe_tower_vector();

            if (!in_temp)
                wxGetApp().app_config->update_config_dir(path.parent_path().string());
        }

        if (load_model) {

            if (!is_project_file) {

                if (load_stats.deleted_objects_cnt > 0) {
                    MessageDialog(q, format_wxstr(_L_PLURAL(
                        "Object size from file %s appears to be zero.\n"
                        "This object has been removed from the model",
                        "Objects size from file %s appears to be zero.\n"
                        "These objects have been removed from the model", load_stats.deleted_objects_cnt), from_path(filename)) + "\n",
                        _L("The size of the object is zero"), wxICON_INFORMATION | wxOK).ShowModal();
                }

                if (imperial_units) {
                    // Convert even if the object is big.
                    // It's a case, when we load model from STL, saved in imperial units
                    ModelProcessing::convert_from_imperial_units(model, false);
                }
                else if (load_stats.looks_like_saved_in_meters) {
                    int answer = answer_convert_from_meters;
                    if (answer_convert_from_meters == wxOK_DEFAULT) {
                        RichMessageDialog dlg(q, format_wxstr(_L_PLURAL(
                            "The dimensions of the object from file %s seem to be defined in meters.\n"
                            "The internal unit of PrusaSlicer is a millimeter. Do you want to recalculate the dimensions of the object?",
                            "The dimensions of some objects from file %s seem to be defined in meters.\n"
                            "The internal unit of PrusaSlicer is a millimeter. Do you want to recalculate the dimensions of these objects?", model.objects.size()), from_path(filename)) + "\n",
                            _L("The object is too small"), wxICON_QUESTION | wxYES_NO);
                        dlg.ShowCheckBox(_L("Apply to all the remaining small objects being loaded."));
                        answer = dlg.ShowModal();
                        if (dlg.IsCheckBoxChecked())
                            answer_convert_from_meters = answer;
                    }
                    if (answer == wxID_YES)
                        //FIXME up-scale only the small parts?
                        ModelProcessing::convert_from_meters(model, true);
                }
                else if (load_stats.looks_like_imperial_units) {
                    int answer = answer_convert_from_imperial_units;
                    if (answer_convert_from_imperial_units == wxOK_DEFAULT) {
                        RichMessageDialog dlg(q, format_wxstr(_L_PLURAL(
                            "The dimensions of the object from file %s seem to be defined in inches.\n"
                            "The internal unit of PrusaSlicer is a millimeter. Do you want to recalculate the dimensions of the object?",
                            "The dimensions of some objects from file %s seem to be defined in inches.\n"
                            "The internal unit of PrusaSlicer is a millimeter. Do you want to recalculate the dimensions of these objects?", model.objects.size()), from_path(filename)) + "\n",
                            _L("The object is too small"), wxICON_QUESTION | wxYES_NO);
                        dlg.ShowCheckBox(_L("Apply to all the remaining small objects being loaded."));
                        answer = dlg.ShowModal();
                        if (dlg.IsCheckBoxChecked())
                            answer_convert_from_imperial_units = answer;
                    }
                    if (answer == wxID_YES)
                        //FIXME up-scale only the small parts?
                        ModelProcessing::convert_from_imperial_units(model, true);
                }

                if (load_stats.looks_like_multipart_object) {
                    int answer = answer_consider_as_multi_part_objects;
                    if (answer_consider_as_multi_part_objects == wxOK_DEFAULT) {
                        RichMessageDialog dlg(q, _L(
                            "This file contains several objects positioned at multiple heights.\n"
                            "Instead of considering them as multiple objects, should \n"
                            "the file be loaded as a single object having multiple parts?") + "\n",
                            _L("Multi-part object detected"), wxICON_QUESTION | wxYES_NO);
                        dlg.ShowCheckBox(_L("Apply to all objects being loaded."));
                        answer = dlg.ShowModal();
                        if (dlg.IsCheckBoxChecked())
                            answer_consider_as_multi_part_objects = answer;
                    }
                    if (/*!type_printRequest && */answer == wxID_YES) //! type_printRequest is no need here, SLA allow multipart object now
                        ModelProcessing::convert_to_multipart_object(model, nozzle_dmrs->size());
                }
            }

            if ((wxGetApp().get_mode() == comSimple) && type_3mf && model_has_advanced_features(model)) {
                MessageDialog msg_dlg(q, _L("This file cannot be loaded in a simple mode. Do you want to switch to an advanced mode?")+"\n",
                    _L("Detected advanced data"), wxICON_WARNING | wxOK | wxCANCEL);
                if (msg_dlg.ShowModal() == wxID_OK) {
                    if (wxGetApp().save_mode(comAdvanced))
                        view3D->set_as_dirty();
                }
                else
                    continue;// return obj_idxs;
            }

            for (ModelObject* model_object : model.objects) {
                if (!type_3mf) {
                    model_object->center_around_origin(false);
                    if (type_any_amf && model_object->instances.empty()) {
                        ModelInstance* instance = model_object->add_instance();
                        instance->set_offset(-model_object->origin_translation);
                    }
                }
                if (!model_object->instances.empty())
                  model_object->ensure_on_bed(is_project_file);
                if (type_printRequest)  {
                    for (ModelInstance* obj_instance : model_object->instances)  {
                        obj_instance->set_offset(obj_instance->get_offset() + Slic3r::to_3d(this->bed.build_volume().bed_center(), -model_object->origin_translation(2)));
                    }
                }
            }

            if (type_printRequest ) {
                assert(model.materials.size());

                for (const auto& material : model.materials) {
                    std::string preset_name = wxGetApp().preset_bundle->get_preset_name_by_alias_invisible(Preset::Type::TYPE_SLA_MATERIAL, material.first);
                    Preset* prst = wxGetApp().preset_bundle->sla_materials.find_preset(preset_name, false);
                    if (!prst) { //did not find compatible profile 
                        // try find alias of material comaptible with another print profile - if exists, use the print profile
                        auto& prints = wxGetApp().preset_bundle->sla_prints;
                        std::string edited_print_name = prints.get_edited_preset().name;
                        bool found = false;
                        for (auto it = prints.begin(); it != prints.end(); ++it)
                        {
                            if (it->name != edited_print_name) {
                                BOOST_LOG_TRIVIAL(error) << it->name;
                                wxGetApp().get_tab(Preset::Type::TYPE_SLA_PRINT)->select_preset(it->name, false);
                                preset_name = wxGetApp().preset_bundle->get_preset_name_by_alias_invisible(Preset::Type::TYPE_SLA_MATERIAL, material.first);
                                prst = wxGetApp().preset_bundle->sla_materials.find_preset(preset_name, false);
                                if (prst) {
                                    found = true;
                                    break;
                                }
                            }
                        }
                        if (!found) {
                            // return to original print profile
                            wxGetApp().get_tab(Preset::Type::TYPE_SLA_PRINT)->select_preset(edited_print_name, false);
                            std::string notif_text = GUI::format(_L("Material preset was not loaded:\n - %1%"), preset_name);
                            q->get_notification_manager()->push_notification(NotificationType::CustomNotification,
                                NotificationManager::NotificationLevel::PrintInfoNotificationLevel, notif_text);
                            break;
                        }
                    }

                    PresetBundle* preset_bundle = wxGetApp().preset_bundle;
                    if (preset_bundle->sla_materials.get_selected_preset_name() != preset_name) {
                        preset_bundle->sla_materials.select_preset_by_name(preset_name, false, true);
                        preset_bundle->tmp_installed_presets = { preset_name };
                        q->notify_about_installed_presets();
                        wxGetApp().load_current_presets(false);// For this case we shouldn't check printer_presets
                    }
                    break;
                }
            }

            if (one_by_one) {
                if ((type_3mf && !is_project_file) || type_any_amf)
                    model.center_instances_around_point(this->bed.build_volume().bed_center());
                auto loaded_idxs = load_model_objects(model.objects, is_project_file);
                obj_idxs.insert(obj_idxs.end(), loaded_idxs.begin(), loaded_idxs.end());
            } else {
                // This must be an .stl or .obj file, which may contain a maximum of one volume.
                for (const ModelObject* model_object : model.objects) {
                    extra_model->add_object(*model_object);
                }
            }

            if (is_project_file)
                plater_after_load_auto_arrange.disable();
        }
    }

    if (extra_model != nullptr && extra_model->objects.size() > 1) {
        MessageDialog msg_dlg(q, _L(
                "Multiple objects were loaded for a multi-material printer.\n"
                "Instead of considering them as multiple objects, should I consider\n"
                "these files to represent a single object having multiple parts?") + "\n",
                _L("Multi-part object detected"), wxICON_WARNING | wxYES | wxNO);
        if (msg_dlg.ShowModal() == wxID_YES) {
            ModelProcessing::convert_to_multipart_object(*extra_model, nozzle_dmrs->values.size());
        }

        auto loaded_idxs = load_model_objects(extra_model->objects);
        obj_idxs.insert(obj_idxs.end(), loaded_idxs.begin(), loaded_idxs.end());
    }

    if (load_model && !in_temp) {
        wxGetApp().app_config->update_skein_dir(input_files[input_files.size() - 1].parent_path().make_preferred().string());
        // XXX: Plater.pm had @loaded_files, but didn't seem to fill them with the filenames...
    }

    // automatic selection of added objects
    if (!obj_idxs.empty() && view3D != nullptr) {
        // update printable state for new volumes on canvas3D
        wxGetApp().plater()->canvas3D()->update_instance_printable_state_for_objects(obj_idxs);

        Selection& selection = view3D->get_canvas3d()->get_selection();
        selection.clear();
        for (size_t idx : obj_idxs) {
            selection.add_object((unsigned int)idx, false);
        }

        if (view3D->get_canvas3d()->get_gizmos_manager().is_enabled())
            // this is required because the selected object changed and the flatten on face an sla support gizmos need to be updated accordingly
            view3D->get_canvas3d()->update_gizmos_on_off_state();
    }

    GLGizmoSimplify::add_simplify_suggestion_notification(
        obj_idxs, model.objects, *notification_manager);

    if (
        prusaslicer_generator_version
        && *prusaslicer_generator_version < Semver("2.9.0-alpha1")
    ) {
        BOOST_LOG_TRIVIAL(info) << "Rearranging legacy project...";
        s_multiple_beds.rearrange_after_load(model, q->build_volume());
    }
    q->canvas3D()->check_volumes_outside_state();
    s_multiple_beds.ensure_wipe_towers_on_beds(model, fff_prints);
    s_multiple_beds.update_shown_beds(model, q->build_volume());

    update((unsigned int)UpdateParams::FORCE_BACKGROUND_PROCESSING_UPDATE);

    return obj_idxs;
}

// #define AUTOPLACEMENT_ON_LOAD

std::vector<size_t> Plater::priv::load_model_objects(const ModelObjectPtrs& model_objects, bool allow_negative_z, bool call_selection_changed /*= true*/)
{
    const Vec3d bed_size = Slic3r::to_3d(this->bed.build_volume().bounding_volume2d().size(), 1.0) - 2.0 * Vec3d::Ones();

#ifndef AUTOPLACEMENT_ON_LOAD
    // bool need_arrange = false;
#endif /* AUTOPLACEMENT_ON_LOAD */
    bool scaled_down = false;
    std::vector<size_t> obj_idxs;
    unsigned int obj_count = model.objects.size();

#ifdef AUTOPLACEMENT_ON_LOAD
    ModelInstancePtrs new_instances;
#endif /* AUTOPLACEMENT_ON_LOAD */
    for (ModelObject *model_object : model_objects) {
        auto *object = model.add_object(*model_object);
        object->sort_volumes(get_config_bool("order_volumes"));
        std::string object_name = object->name.empty() ? fs::path(object->input_file).filename().string() : object->name;
        obj_idxs.push_back(obj_count++);

        if (model_object->instances.empty()) {
#ifdef AUTOPLACEMENT_ON_LOAD
            object->center_around_origin();
            new_instances.emplace_back(object->add_instance());
#else /* AUTOPLACEMENT_ON_LOAD */
            // if object has no defined position(s) we need to rearrange everything after loading
            // need_arrange = true;
             // add a default instance and center object around origin
            object->center_around_origin();  // also aligns object to Z = 0
            ModelInstance* instance = object->add_instance();
            instance->set_offset(Slic3r::to_3d(this->bed.build_volume().bed_center(), -object->origin_translation(2)));
#endif /* AUTOPLACEMENT_ON_LOAD */
        }

        for (size_t i = 0; i < object->instances.size() 
             && !object->is_cut()       // don't apply scaled_down functionality to cut objects
            ; ++i) {
            ModelInstance* instance = object->instances[i];
            const Vec3d size = object->instance_bounding_box(i).size();
            const Vec3d ratio = size.cwiseQuotient(bed_size);
            const double max_ratio = std::max(ratio(0), ratio(1));
            if (max_ratio > 10000) {
                // the size of the object is too big -> this could lead to overflow when moving to clipper coordinates,
                // so scale down the mesh
                object->scale_mesh_after_creation(1. / max_ratio);
                object->origin_translation = Vec3d::Zero();
                object->center_around_origin();
                scaled_down = true;
                break;
            }
            else if (max_ratio > 5) {
                instance->set_scaling_factor(instance->get_scaling_factor() / max_ratio);
                scaled_down = true;
            }

            if (! s_multiple_beds.get_loading_project_flag())
                instance->set_offset(instance->get_offset() + s_multiple_beds.get_bed_translation(s_multiple_beds.get_active_bed()));
        }

        object->ensure_on_bed(allow_negative_z);
    }

#ifdef AUTOPLACEMENT_ON_LOAD
    // FIXME distance should be a config value /////////////////////////////////
    auto min_obj_distance = static_cast<coord_t>(6/SCALING_FACTOR);
    const auto *bed_shape_opt = config->opt<ConfigOptionPoints>("bed_shape");
    assert(bed_shape_opt);
    auto& bedpoints = bed_shape_opt->values;
    Polyline bed; bed.points.reserve(bedpoints.size());
    for(auto& v : bedpoints) bed.append(Point::new_scale(v(0), v(1)));

    std::pair<bool, GLCanvas3D::WipeTowerInfo> wti = view3D->get_canvas3d()->get_wipe_tower_info();

    arr::find_new_position(model, new_instances, min_obj_distance, bed, wti);

    // it remains to move the wipe tower:
    view3D->get_canvas3d()->arrange_wipe_tower(wti);

#endif /* AUTOPLACEMENT_ON_LOAD */

    if (scaled_down) {
        GUI::show_info(q,
            _L("Your object appears to be too large, so it was automatically scaled down to fit your print bed."),
            _L("Object too large?"));
    }

    notification_manager->close_notification_of_type(NotificationType::UpdatedItemsInfo);
    for (const size_t idx : obj_idxs) {
        wxGetApp().obj_list()->add_object_to_list(idx, call_selection_changed);
    }

    if (call_selection_changed) {
        update();
        // Update InfoItems in ObjectList after update() to use of a correct value of the GLCanvas3D::is_sinking(),
        // which is updated after a view3D->reload_scene(false, flags & (unsigned int)UpdateParams::FORCE_FULL_SCREEN_REFRESH) call
        for (const size_t idx : obj_idxs)
            wxGetApp().obj_list()->update_info_items(idx);

        object_list_changed();
    }
    this->schedule_background_process();

    return obj_idxs;
}

fs::path Plater::priv::get_export_file_path(GUI::FileType file_type)
{
    // Update printbility state of each of the ModelInstances.
    this->update_print_volume_state();

    const Selection& selection = get_selection();
    int obj_idx = selection.get_object_idx();

    fs::path output_file;
    if (file_type == FT_3MF)
        // for 3mf take the path from the project filename, if any
        output_file = into_path(get_project_filename(".3mf"));

    if (output_file.empty())
    {
        // first try to get the file name from the current selection
        if ((0 <= obj_idx) && (obj_idx < (int)this->model.objects.size()))
            output_file = this->model.objects[obj_idx]->get_export_filename();

        if (output_file.empty())
            // Find the file name of the first printable object.
            output_file = this->model.propose_export_file_name_and_path();

        if (output_file.empty() && !model.objects.empty())
            // Find the file name of the first object.
            output_file = this->model.objects[0]->get_export_filename();

        if (output_file.empty())
            // Use _L("Untitled") name
            output_file = into_path(_L("Untitled"));
    }
    return output_file;
}

wxString Plater::priv::get_export_file(GUI::FileType file_type)
{
    wxString wildcard;
    switch (file_type) {
        case FT_STL:
        case FT_AMF:
        case FT_3MF:
        case FT_GCODE:
        case FT_OBJ:
        case FT_OBJECT:
            wildcard = file_wildcards(file_type);
        break;
        default:
            wildcard = file_wildcards(FT_MODEL);
        break;
    }

    fs::path output_file = get_export_file_path(file_type);

    wxString dlg_title;
    switch (file_type) {
        case FT_STL:
        {
            output_file.replace_extension("stl");
            dlg_title = _L("Export STL file:");
            break;
        }
        case FT_AMF:
        {
            // XXX: Problem on OS X with double extension?
            output_file.replace_extension("zip.amf");
            dlg_title = _L("Export AMF file:");
            break;
        }
        case FT_3MF:
        {
            output_file.replace_extension("3mf");
            dlg_title = _L("Save file as:");
            break;
        }
        case FT_OBJ:
        {
            output_file.replace_extension("obj");
            dlg_title = _L("Export OBJ file:");
            break;
        }
        default: break;
    }

    std::string out_dir = (boost::filesystem::path(output_file).parent_path()).string();
    std::string temp_dir = wxStandardPaths::Get().GetTempDir().utf8_str().data();
    
    wxFileDialog dlg(q, dlg_title,
        out_dir == temp_dir ? from_u8(wxGetApp().app_config->get("last_output_path"))  : (is_shapes_dir(out_dir) ? from_u8(wxGetApp().app_config->get_last_dir()) : from_path(output_file.parent_path())), from_path(output_file.filename()),
        wildcard, wxFD_SAVE | wxFD_OVERWRITE_PROMPT);

    if (dlg.ShowModal() != wxID_OK)
        return wxEmptyString;

    wxString out_path = dlg.GetPath();
    fs::path path(into_path(out_path));
    wxGetApp().app_config->update_last_output_dir(path.parent_path().string());

    return out_path;
}

const Selection& Plater::priv::get_selection() const
{
    return view3D->get_canvas3d()->get_selection();
}

Selection& Plater::priv::get_selection()
{
    return view3D->get_canvas3d()->get_selection();
}

int Plater::priv::get_selected_object_idx() const
{
    const int idx = get_selection().get_object_idx();
    return (0 <= idx && idx < int(model.objects.size())) ? idx : -1;
}

int Plater::priv::get_selected_instance_idx() const
{
    const int obj_idx = get_selected_object_idx();
    if (obj_idx >= 0) {
        const int inst_idx = get_selection().get_instance_idx();
        return (0 <= inst_idx && inst_idx < int(model.objects[obj_idx]->instances.size())) ? inst_idx : -1;
    }
    else
        return -1;
}

int Plater::priv::get_selected_volume_idx() const
{
    auto& selection = get_selection();
    const int idx = selection.get_object_idx();
    if (idx < 0 || int(model.objects.size()) <= idx)
        return-1;
    const GLVolume* v = selection.get_first_volume();
    if (model.objects[idx]->volumes.size() > 1)
        return v->volume_idx();
    return -1;
}

void Plater::priv::selection_changed()
{
    // if the selection is not valid to allow for layer editing, we need to turn off the tool if it is running
    if (!layers_height_allowed() && view3D->is_layers_editing_enabled()) {
        SimpleEvent evt(EVT_GLTOOLBAR_LAYERSEDITING);
        on_action_layersediting(evt);
    }

    // forces a frame render to update the view (to avoid a missed update if, for example, the context menu appears)
    view3D->render();
}

void Plater::priv::object_list_changed()
{
    if (!wxGetApp().plater())
        return;
    const bool export_in_progress = this->background_process.is_export_scheduled(); // || ! send_gcode_file.empty());
                                                                                    //
    if (printer_technology == ptFFF) {
        for (std::size_t bed_index{}; bed_index < s_multiple_beds.get_number_of_beds(); ++bed_index) {
            if ( wxGetApp().plater()->get_fff_prints()[bed_index]->empty()) {
                s_print_statuses[bed_index] = PrintStatus::empty;
            } else if (
                wxGetApp().plater()->get_fff_prints()[bed_index]->finished()
                && is_sliceable(s_print_statuses[bed_index])
                && s_print_statuses[bed_index] != PrintStatus::toolpath_outside
            ) {
                s_print_statuses[bed_index] = PrintStatus::finished;
            }
            for (const ModelObject *object : wxGetApp().model().objects) {
                for (const ModelInstance *instance : object->instances) {
                    const auto it{s_multiple_beds.get_inst_map().find(instance->id())};
                    if (
                        it != s_multiple_beds.get_inst_map().end()
                        && it->second == bed_index
                        && instance->printable
                        && instance->print_volume_state == ModelInstancePVS_Partly_Outside
                    ) {
                        s_print_statuses[bed_index] = PrintStatus::outside;
                        break;
                    }
                }
            }
        }
    } else {
        if (model.objects.empty()) {
            s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::empty;
        }
    }

    sidebar->enable_buttons(
        s_multiple_beds.is_bed_occupied(s_multiple_beds.get_active_bed())
        && !export_in_progress
        && is_sliceable(s_print_statuses[s_multiple_beds.get_active_bed()])
    );
}

void Plater::priv::select_all()
{
    view3D->select_all();
    this->sidebar->obj_list()->update_selections();
}

void Plater::priv::deselect_all()
{
    view3D->deselect_all();
}

void Plater::priv::remove(size_t obj_idx)
{
    if (view3D->is_layers_editing_enabled())
        view3D->enable_layers_editing(false);

    m_worker.cancel_all();
    model.delete_object(obj_idx);
    update();
    // Delete object from Sidebar list. Do it after update, so that the GLScene selection is updated with the modified model.
    sidebar->obj_list()->delete_object_from_list(obj_idx);
    object_list_changed();
}


bool Plater::priv::delete_object_from_model(size_t obj_idx)
{
    // check if object isn't cut
    // show warning message that "cut consistancy" will not be supported any more
    ModelObject* obj = model.objects[obj_idx];
    if (obj->is_cut()) {
        InfoDialog dialog(q, _L("Delete object which is a part of cut object"), 
                             _L("You try to delete an object which is a part of a cut object.") + "\n" + 
                                _L("This action will break a cut information.\n"
                                "After that PrusaSlicer can't guarantee model consistency"), 
                                false, wxYES | wxCANCEL | wxCANCEL_DEFAULT | wxICON_WARNING);
        dialog.SetButtonLabel(wxID_YES, _L("Delete object"));
        if (dialog.ShowModal() == wxID_CANCEL)
            return false;
    }

    wxString snapshot_label = _L("Delete Object");
    if (!obj->name.empty())
        snapshot_label += ": " + wxString::FromUTF8(obj->name.c_str());
    Plater::TakeSnapshot snapshot(q, snapshot_label);
    m_worker.cancel_all();

    if (obj->is_cut())
        sidebar->obj_list()->invalidate_cut_info_for_object(obj_idx);

    model.delete_object(obj_idx);

    update();
    object_list_changed();

    return true;
}

void Plater::priv::delete_all_objects_from_model()
{
    Plater::TakeSnapshot snapshot(q, _L("Delete All Objects"));

    if (view3D->is_layers_editing_enabled())
        view3D->enable_layers_editing(false);

    reset_gcode_toolpaths();
    std::for_each(gcode_results.begin(), gcode_results.end(), [](auto& g) { g.reset(); });

    view3D->get_canvas3d()->reset_all_gizmos();

    m_worker.cancel_all();

    // Stop and reset the Print content.
    background_process.reset();
    model.clear_objects();
    update();
    // Delete object from Sidebar list. Do it after update, so that the GLScene selection is updated with the modified model.
    sidebar->obj_list()->delete_all_objects_from_list();
    object_list_changed();

    // The hiding of the slicing results, if shown, is not taken care by the background process, so we do it here
    sidebar->show_sliced_info_sizer(false);

    for (CustomGCode::Info& info : model.get_custom_gcode_per_print_z_vector())
        info.gcodes.clear();
}

void Plater::priv::reset()
{
    Plater::TakeSnapshot snapshot(q, _L("Reset Project"), UndoRedo::SnapshotType::ProjectSeparator);

	clear_warnings();

    set_project_filename(wxEmptyString);

    if (view3D->is_layers_editing_enabled())
        view3D->enable_layers_editing(false);

    reset_gcode_toolpaths();
    std::for_each(gcode_results.begin(), gcode_results.end(), [](auto& g) { g.reset(); });

    m_worker.cancel_all();

    // Stop and reset the Print content.
    this->background_process.reset();
    model.clear_objects();
    update();
    // Delete object from Sidebar list. Do it after update, so that the GLScene selection is updated with the modified model.
    sidebar->obj_list()->delete_all_objects_from_list();
    object_list_changed();

    // The hiding of the slicing results, if shown, is not taken care by the background process, so we do it here
    this->sidebar->show_sliced_info_sizer(false);

    for (CustomGCode::Info& info : model.get_custom_gcode_per_print_z_vector())
        info.gcodes.clear();
}

void Plater::priv::mirror(Axis axis)
{
    view3D->mirror_selection(axis);
}

void Plater::priv::split_object()
{
    int obj_idx = get_selected_object_idx();
    if (obj_idx == -1)
        return;
    
    // we clone model object because split_object() adds the split volumes
    // into the same model object, thus causing duplicates when we call load_model_objects()
    Model new_model = model;
    ModelObject* current_model_object = new_model.objects[obj_idx];

    // Before splitting object we have to remove all custom supports, seams, and multimaterial painting.
    wxGetApp().plater()->clear_before_change_mesh(obj_idx, _u8L("Custom supports, seams and multimaterial painting were "
                                                                "removed after splitting the object."));

    wxBusyCursor wait;
    ModelObjectPtrs new_objects;
    ModelProcessing::split(current_model_object, &new_objects);
    if (new_objects.size() == 1)
        // #ysFIXME use notification
        Slic3r::GUI::warning_catcher(q, _L("The selected object couldn't be split because it contains only one solid part."));
    else
    {
        // If we splited object which is contain some parts/modifiers then all non-solid parts (modifiers) were deleted
        if (current_model_object->volumes.size() > 1 && current_model_object->volumes.size() != new_objects.size())
            notification_manager->push_notification(NotificationType::CustomNotification,
                NotificationManager::NotificationLevel::PrintInfoNotificationLevel,
                _u8L("All non-solid parts (modifiers) were deleted"));

        Plater::TakeSnapshot snapshot(q, _L("Split to Objects"));

        remove(obj_idx);

        // load all model objects at once, otherwise the plate would be rearranged after each one
        // causing original positions not to be kept
        // Note that load_model_objects shifts the object to the active bed. To prevent it,
        // raise a flag as if a project was being loaded.
        s_multiple_beds.set_loading_project_flag(true);
        std::vector<size_t> idxs = load_model_objects(new_objects);
        s_multiple_beds.set_loading_project_flag(false);

        // clear previosli selection
        get_selection().clear();
        // select newly added objects
        for (size_t idx : idxs)
        {
            get_selection().add_object((unsigned int)idx, false);
            // update printable state for new volumes on canvas3D
            q->canvas3D()->update_instance_printable_state_for_object(idx);
        }
    }
}

void Plater::priv::split_volume()
{
    wxGetApp().obj_list()->split();
}

void Plater::priv::scale_selection_to_fit_print_volume()
{
    this->view3D->get_canvas3d()->get_selection().scale_to_fit_print_volume(this->bed.build_volume());
}

void Plater::priv::schedule_background_process()
{
    delayed_error_message.clear();
    // Trigger the timer event after 0.1s
    this->background_process_timer.Start(100, wxTIMER_ONE_SHOT);
    // Notify the Canvas3D that something has changed, so it may invalidate some of the layer editing stuff.
    this->view3D->get_canvas3d()->set_config(this->config);
}

void Plater::priv::update_print_volume_state()
{
    this->q->model().update_print_volume_state(this->bed.build_volume());
}

void Plater::priv::process_validation_warning(const std::vector<std::string>& warnings) const
{
    if (warnings.empty())
        notification_manager->close_notification_of_type(NotificationType::ValidateWarning);

    // Always close warnings BedTemperaturesDiffer, ShrinkageCompensationsDiffer, WipeTowerNozzleDiameterDiffer and SupportNozzleDiameterDiffer before next processing.
    notification_manager->close_notification_of_type(NotificationType::BedTemperaturesDiffer);
    notification_manager->close_notification_of_type(NotificationType::ShrinkageCompensationsDiffer);
    notification_manager->close_notification_of_type(NotificationType::WipeTowerNozzleDiameterDiffer);
    notification_manager->close_notification_of_type(NotificationType::SupportNozzleDiameterDiffer);

    for (std::string text : warnings) {
        std::string                        hypertext         = "";
        std::string                        text_after        = "";
        bool                               multiline         = false;
        NotificationType                   notification_type = NotificationType::ValidateWarning;
        std::function<bool(wxEvtHandler*)> action_fn         = [](wxEvtHandler*){ return false; };

        if (text == "_SUPPORTS_OFF") {
            text = _u8L("An object has custom support enforcers which will not be used "
                        "because supports are disabled.")+"\n";
            hypertext = _u8L("Enable supports for enforcers only.");
            action_fn = [](wxEvtHandler*) {
                Tab* print_tab = wxGetApp().get_tab(Preset::TYPE_PRINT);
                assert(print_tab);
                DynamicPrintConfig& config = wxGetApp().preset_bundle->prints.get_edited_preset().config;
                config.set_key_value("support_material", new ConfigOptionBool(true));
                config.set_key_value("support_material_auto", new ConfigOptionBool(false));
                print_tab->on_value_change("support_material", config.opt_bool("support_material"));
                print_tab->on_value_change("support_material_auto", config.opt_bool("support_material_auto"));
                return true;
            };
        } else if (text == "_BED_TEMPS_DIFFER" || text == "_BED_TEMPS_CHANGED") {
            // TRN: Text of a notification, followed by (single) hyperlink to two of the config options. The sentence had to be split because of the hyperlink, sorry.
            // The hyperlink part of the sentence reads "'Bed temperature by extruder' and 'Wipe tower extruder'", and it is also to be translated.
            text              = _u8L("Bed temperatures for the used filaments differ significantly.\n"
                                     "For multi-material prints it is recommended to set the ");
            // TRN: The other part of the sentence starting "Bed temperatures for the used" (also in the dictionary). Sorry for splitting it, technical reasons -
            // this part of the sentence is a hyperlink.
            hypertext = _u8L("'Bed temperature by extruder' and 'Wipe tower extruder'");
            multiline = true;
            notification_type = NotificationType::BedTemperaturesDiffer;
            action_fn = [](wxEvtHandler*) {
                GUI::wxGetApp().get_tab(Preset::Type::TYPE_PRINT)->activate_option("bed_temperature_extruder", boost::nowide::widen("Multiple Extruders"), { "wipe_tower_extruder" });
                return true;
            };
        } else if (text == "_FILAMENT_SHRINKAGE_DIFFER") {
            text              = _u8L("Filament shrinkage will not be used because filament shrinkage "
                                     "for the used filaments differs significantly.");
            notification_type = NotificationType::ShrinkageCompensationsDiffer;
        } else if (text == "_WIPE_TOWER_NOZZLE_DIAMETER_DIFFER") {
            text              = _u8L("Using the wipe tower for extruders with different nozzle diameters "
                                     "is experimental, so proceed with caution.");
            notification_type = NotificationType::WipeTowerNozzleDiameterDiffer;
        } else if (text == "_SUPPORT_NOZZLE_DIAMETER_DIFFER") {
            // TRN: This is a first part of the notification text:
            // "Printing supports with different nozzle diameters is experimental. For best results, switch to Organic supports and assign a specific extruder for supports."
            text              = _u8L("Printing supports with different nozzle diameters "
                                     "is experimental. For best results, switch to Organic supports and");
            // TRN: This is a second part (hyperlink) of the notification text:
            // "Printing supports with different nozzle diameters is experimental. For best results, switch to Organic supports and assign a specific extruder for supports."
            hypertext         = _u8L("assign a specific extruder for supports.");
            multiline         = true;
            notification_type = NotificationType::SupportNozzleDiameterDiffer;
            action_fn = [](wxEvtHandler*) {
                GUI::wxGetApp().jump_to_option("support_material_extruder", Preset::Type::TYPE_PRINT, boost::nowide::widen("Multiple Extruders"));
                return false;
            };
        }

        notification_manager->push_notification(
            notification_type,
            NotificationManager::NotificationLevel::WarningNotificationLevel,
            _u8L("WARNING:") + "\n" + text, hypertext, action_fn, text_after, 0, multiline
        );
    }
}

std::vector<Print::ApplyStatus> apply_to_inactive_beds(
    Model &model,
    std::vector<std::unique_ptr<Print>> &prints,
    const DynamicPrintConfig &config
) {
    std::vector<Print::ApplyStatus> result(MAX_NUMBER_OF_BEDS);
    for (std::size_t bed_index{0}; bed_index < prints.size(); ++bed_index) {
        const std::unique_ptr<Print> &print{prints[bed_index]};
        if (!print || bed_index == s_multiple_beds.get_active_bed()) {
            continue;
        }
        using MultipleBedsUtils::with_single_bed_model_fff;
        with_single_bed_model_fff(model, bed_index, [&](){
            result[bed_index] = print->apply(model, config);
        });
    }
    return result;
}

void Plater::priv::regenerate_thumbnails(SimpleEvent&) {
    const int num{s_multiple_beds.get_number_of_beds()};
    if (num <= 1 || num > MAX_NUMBER_OF_BEDS) {
        return;
    }

    ThumbnailData data;
    ThumbnailsParams params;
    params.parts_only = true;
    params.printable_only = true;
    params.show_bed = true;
    params.transparent_background = true;
    int w = 100, h = 100;

    int curr_bound_texture = 0;
    glsafe(glGetIntegerv(GL_TEXTURE_BINDING_2D, &curr_bound_texture));
    int curr_unpack_alignment = 0;
    glsafe(glGetIntegerv(GL_UNPACK_ALIGNMENT, &curr_unpack_alignment));
    glsafe(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
    glsafe(glDeleteTextures(s_bed_selector_thumbnail_texture_ids.size(), s_bed_selector_thumbnail_texture_ids.data()));
    s_bed_selector_thumbnail_changed.fill(false);

    s_bed_selector_thumbnail_texture_ids.resize(num);
    glsafe(glGenTextures(num, s_bed_selector_thumbnail_texture_ids.data()));
    for (int i = 0; i < num; ++i) {
        s_multiple_beds.set_thumbnail_bed_idx(i);
        generate_thumbnail(data, w, h, params, GUI::Camera::EType::Ortho);
        s_multiple_beds.set_thumbnail_bed_idx(-1);
        glsafe(glBindTexture(GL_TEXTURE_2D, s_bed_selector_thumbnail_texture_ids[i]));
        glsafe(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
        glsafe(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
        glsafe(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
        glsafe(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB32F, static_cast<GLsizei>(w), static_cast<GLsizei>(h), 0, GL_RGBA, GL_UNSIGNED_BYTE, data.pixels.data()));
        s_bed_selector_thumbnail_changed[i] = true;
    }
    glsafe(glBindTexture(GL_TEXTURE_2D, curr_bound_texture));
    glsafe(glPixelStorei(GL_UNPACK_ALIGNMENT, curr_unpack_alignment));
}

// Update background processing thread from the current config and Model.
// Returns a bitmask of UpdateBackgroundProcessReturnState.
unsigned int Plater::priv::update_background_process(bool force_validation, bool postpone_error_messages)
{
//    assert(! s_beds_just_switched || background_process.idle());

    int active_bed = s_multiple_beds.get_active_bed();
    background_process.set_temp_output_path(active_bed);
    background_process.set_fff_print(&q->active_fff_print());
    background_process.set_sla_print(&q->active_sla_print());
    background_process.set_gcode_result(&gcode_results[active_bed]);
    background_process.select_technology(this->printer_technology);


    if (s_beds_just_switched && printer_technology == ptFFF) {
        PrintBase::SlicingStatus status(q->active_fff_print(), -1);
        SlicingStatusEvent evt(EVT_SLICING_UPDATE, 0, status);
        on_slicing_update(evt);
        s_beds_just_switched = false;
        // we hide slicing notification here to prevent empty notification and it will init itself again via the incoming progress (if there is any)
        notification_manager->set_slicing_progress_hidden();
        notification_manager->close_notification_of_type(NotificationType::ExportOngoing);
        q->sidebar().show_sliced_info_sizer(background_process.finished());
    }

    // bitmap of enum UpdateBackgroundProcessReturnState
    unsigned int return_state = 0;
    if (s_multiple_beds.is_autoslicing()) {
        return_state = return_state | UPDATE_BACKGROUND_PROCESS_FORCE_RESTART;
    }

    // Get the config ready. The binary gcode flag depends on Preferences, which the backend has no access to.
    DynamicPrintConfig full_config = wxGetApp().preset_bundle->full_config();
    if (full_config.has("binary_gcode")) // needed for SLA
        full_config.set("binary_gcode", bool(full_config.opt_bool("binary_gcode") & wxGetApp().app_config->get_bool("use_binary_gcode_when_supported")));

    // Set printer_model in full_config a model without repo prefix (including inherited profiles)
    const Preset &selected_printer = wxGetApp().preset_bundle->printers.get_selected_preset();
    std::string printer_model = selected_printer.config.opt_string("printer_model");
    const PresetWithVendorProfile& printer_with_vendor = wxGetApp().preset_bundle->printers.get_preset_with_vendor_profile(selected_printer);
    printer_model = selected_printer.trim_vendor_repo_prefix(printer_model, printer_with_vendor.vendor);
    full_config.set("printer_model", printer_model);

    if (selected_printer.vendor) {
        // Passing extra info about preset vendor and version, so these can be inserted as metadata to GCode
        full_config.set("profile_vendor", selected_printer.vendor->name, true);
        full_config.set("profile_version", selected_printer.vendor->config_version.to_string(), true);
    }

    // If the update_background_process() was not called by the timer, kill the timer,
    // so the update_restart_background_process() will not be called again in vain.
    background_process_timer.Stop();
    // Update the "out of print bed" state of ModelInstances.
    update_print_volume_state();

    Print::ApplyStatus invalidated{Print::ApplyStatus::APPLY_STATUS_INVALIDATED};
    bool was_running = background_process.running();
    using MultipleBedsUtils::with_single_bed_model_fff;
    using MultipleBedsUtils::with_single_bed_model_sla;

    std::vector<Print::ApplyStatus> apply_statuses{
        printer_technology == ptFFF ?
        apply_to_inactive_beds(q->model(), q->p->fff_prints, full_config) :
        std::vector<Print::ApplyStatus>(1)
    };

    std::vector<std::string> warnings;
    // Apply new config to the possibly running background task and give the user feedback on warnings.
    if (printer_technology == ptFFF) {
        with_single_bed_model_fff(q->model(), s_multiple_beds.get_active_bed(), [&](){
            invalidated = background_process.apply(q->model(), full_config, &warnings);
            apply_statuses[s_multiple_beds.get_active_bed()] = invalidated;
        });
    } else if (printer_technology == ptSLA) {
        with_single_bed_model_sla(q->model(), s_multiple_beds.get_active_bed(), [&](){
            invalidated = background_process.apply(q->model(), full_config, &warnings);
            apply_statuses[0] = invalidated;
        });
    } else {
        throw std::runtime_error{"Ivalid printer technology!"};
    }

    for (std::size_t bed_index{}; bed_index < s_multiple_beds.get_number_of_beds(); ++bed_index) {
        if (printer_technology == ptFFF) {
            if (apply_statuses[bed_index] != Print::ApplyStatus::APPLY_STATUS_UNCHANGED) {
                s_print_statuses[bed_index] = PrintStatus::idle;
            }
        } else if (printer_technology == ptSLA) {
            if (apply_statuses[0] != Print::ApplyStatus::APPLY_STATUS_UNCHANGED) {
                s_print_statuses[bed_index] = PrintStatus::idle;
            }
        } else {
            throw std::runtime_error{"Ivalid printer technology!"};
        }
    }

    if (printer_technology == ptFFF) {
        for (std::size_t bed_index{0}; bed_index < q->p->fff_prints.size(); ++bed_index) {
            const std::unique_ptr<Print> &print{q->p->fff_prints[bed_index]};
            using MultipleBedsUtils::with_single_bed_model_fff;
            with_single_bed_model_fff(model, bed_index, [&](){
                std::vector<std::string> warnings;
                std::string err{print->validate(&warnings)};
                if (!err.empty()) {
                    s_print_statuses[bed_index] = PrintStatus::invalid;
                }
            });
        }
    }

    const bool any_status_changed{std::any_of(
        apply_statuses.begin(),
        apply_statuses.end(),
        [](Print::ApplyStatus status){
            return status != Print::ApplyStatus::APPLY_STATUS_UNCHANGED;
        }
    )};

    if (any_status_changed) {
        this->show_autoslicing_action_buttons();
    }

    // If current bed was invalidated, update thumbnails for all beds:
    if (any_status_changed) {
        wxQueueEvent(this->q, new SimpleEvent(EVT_REGENERATE_BED_THUMBNAILS));
    }

    // Just redraw the 3D canvas without reloading the scene to consume the update of the layer height profile.
    if (view3D->is_layers_editing_enabled())
        view3D->get_wxglcanvas()->Refresh();

    if (invalidated == Print::APPLY_STATUS_INVALIDATED) {
        // Some previously calculated data on the Print was invalidated.
        // Hide the slicing results, as the current slicing status is no more valid.
        sidebar->show_sliced_info_sizer(false);
        // Reset preview canvases. If the print has been invalidated, the preview canvases will be cleared.
        // Otherwise they will be just refreshed.
        if (preview != nullptr) {
            // If the preview is not visible, the following line just invalidates the preview,
            // but the G-code paths or SLA preview are calculated first once the preview is made visible.
            reset_gcode_toolpaths();
            preview->reload_print();
        }
        // In FDM mode, we need to reload the 3D scene because of the wipe tower preview box.
        // In SLA mode, we need to reload the 3D scene every time to show the support structures.
        if (printer_technology == ptSLA || (printer_technology == ptFFF && config->opt_bool("wipe_tower")))
            return_state |= UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE;

        notification_manager->set_slicing_progress_hidden();
    }

    if ((invalidated != Print::APPLY_STATUS_UNCHANGED || force_validation) && ! background_process.empty()) {
		// The delayed error message is no more valid.
		delayed_error_message.clear();
		// The state of the Print changed, and it is non-zero. Let's validate it and give the user feedback on errors.
        std::string err = background_process.validate(&warnings);
        if (err.empty()) {
			notification_manager->set_all_slicing_errors_gray(true);
            notification_manager->close_notification_of_type(NotificationType::ValidateError);
            if (invalidated != Print::APPLY_STATUS_UNCHANGED && background_processing_enabled())
                return_state |= UPDATE_BACKGROUND_PROCESS_RESTART;

            // Pass a warning from validation and either show a notification,
            // or hide the old one.
            process_validation_warning(warnings);
            if (printer_technology == ptFFF) {
                GLCanvas3D* canvas = view3D->get_canvas3d();
                canvas->set_as_dirty();
                canvas->request_extra_frame();
            }
        }
        else {
            // The print is not valid.
            // Show error as notification.
            notification_manager->push_validate_error_notification(err);
            return_state |= UPDATE_BACKGROUND_PROCESS_INVALID;
        }
    }
    else {
        if (invalidated == Print::APPLY_STATUS_UNCHANGED && !background_process.empty()) {
            std::vector<std::string> warnings;
            std::string err = background_process.validate(&warnings);
            if (!err.empty())
                return return_state;
        }

        if (! this->delayed_error_message.empty())
    	// Reusing the old state.
        return_state |= UPDATE_BACKGROUND_PROCESS_INVALID;
    }

	//actualizate warnings
	if (invalidated != Print::APPLY_STATUS_UNCHANGED || background_process.empty()) {
        if (background_process.empty())
            process_validation_warning(std::vector<std::string>());
		actualize_slicing_warnings(*this->background_process.current_print());
        actualize_object_warnings(*this->background_process.current_print());
		show_warning_dialog = false;
	} 

    if (invalidated != Print::APPLY_STATUS_UNCHANGED && was_running && ! this->background_process.running() &&
        (return_state & UPDATE_BACKGROUND_PROCESS_RESTART) == 0) {
        // The background processing was killed and it will not be restarted.
        // Post the "canceled" callback message, so that it will be processed after any possible pending status bar update messages.
        wxQueueEvent(GUI::wxGetApp().mainframe->m_plater, new SlicingProcessCompletedEvent(EVT_PROCESS_COMPLETED, 0, SlicingProcessCompletedEvent::Cancelled, std::exception_ptr{}));
    }

    if ((return_state & UPDATE_BACKGROUND_PROCESS_INVALID) != 0)
    {
        // Validation of the background data failed.
        const wxString invalid_str = _L("Invalid data");
        for (auto btn : {ActionButtonType::Reslice, ActionButtonType::SendGCode, ActionButtonType::Export})
            sidebar->set_btn_label(btn, invalid_str);
        s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::invalid;
    }
    else
    {
        // Background data is valid.
        if ((return_state & UPDATE_BACKGROUND_PROCESS_RESTART) != 0 ||
            (return_state & UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE) != 0 )
            notification_manager->set_slicing_progress_hidden();

        sidebar->set_btn_label(ActionButtonType::Export, _(label_btn_export));
        sidebar->set_btn_label(ActionButtonType::SendGCode, _(label_btn_send));
        dirty_state.update_from_preview();

        const wxString slice_string = background_process.running() && wxGetApp().get_mode() == comSimple ?
                                      _L("Slicing") + dots : _L("Slice now");
        sidebar->set_btn_label(ActionButtonType::Reslice, slice_string);
        if (background_process.finished())
            show_action_buttons(false);
        else if (!background_process.empty() &&
                 !background_process.running()) /* Do not update buttons if background process is running
                                                 * This condition is important for SLA mode especially,
                                                 * when this function is called several times during calculations
                                                 * */
            show_action_buttons(true);
    }

    this->q->object_list_changed();
    return return_state;
}

// Restart background processing thread based on a bitmask of UpdateBackgroundProcessReturnState.
bool Plater::priv::restart_background_process(unsigned int state)
{
    if (!m_worker.is_idle()) {
        // Avoid a race condition
        return false;
    }

    if (
        !this->background_process.empty()
        && (state & priv::UPDATE_BACKGROUND_PROCESS_INVALID) == 0
        && (
            ((state & UPDATE_BACKGROUND_PROCESS_FORCE_RESTART) != 0 && !this->background_process.finished())
            || (state & UPDATE_BACKGROUND_PROCESS_FORCE_EXPORT) != 0
            || (state & UPDATE_BACKGROUND_PROCESS_RESTART) != 0
        )
    ) {
        // The print is valid and it can be started.

        if (this->background_process.start()) {
			if (!show_warning_dialog)
				on_slicing_began();
            return true;
        }
    }
    return false;
}

void Plater::priv::export_gcode(fs::path output_path, bool output_path_on_removable_media, PrintHostJob upload_job)
{
    wxCHECK_RET(!(output_path.empty() && upload_job.empty()), "export_gcode: output_path and upload_job empty");
    
    if (model.objects.empty())
        return;

    if (background_process.is_export_scheduled()) {
        GUI::show_error(q, _L("Another export job is currently running."));
        return;
    }

    // bitmask of UpdateBackgroundProcessReturnState
    unsigned int state = update_background_process(true);
    if (state & priv::UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE)
        view3D->reload_scene(false);

    if ((state & priv::UPDATE_BACKGROUND_PROCESS_INVALID) != 0)
        return;

    show_warning_dialog = true;
    if (! output_path.empty()) {
        background_process.schedule_export(output_path.string(), output_path_on_removable_media);
        notification_manager->push_delayed_notification(NotificationType::ExportOngoing, []() {return true; }, 1000, 0);
    } else {
        background_process.schedule_upload(std::move(upload_job));
    }

    // If the SLA processing of just a single object's supports is running, restart slicing for the whole object.
    this->background_process.set_task(PrintBase::TaskParams());
    this->restart_background_process(priv::UPDATE_BACKGROUND_PROCESS_FORCE_EXPORT);
}

unsigned int Plater::priv::update_restart_background_process(bool force_update_scene, bool force_update_preview)
{
    // bitmask of UpdateBackgroundProcessReturnState
    unsigned int state = this->update_background_process(false);
    if (force_update_scene || (state & UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE) != 0)
        view3D->reload_scene(false);

    if (force_update_preview)
        this->preview->reload_print();
    this->restart_background_process(state);
    return state;
}

void Plater::priv::update_fff_scene()
{
    if (this->preview != nullptr)
        this->preview->reload_print();
    // In case this was MM print, wipe tower bounding box on 3D tab might need redrawing with exact depth:
    view3D->reload_scene(true);	
}

void Plater::priv::update_sla_scene()
{
    // Update the SLAPrint from the current Model, so that the reload_scene()
    // pulls the correct data.
    delayed_scene_refresh = false;
    this->update_restart_background_process(true, true);
}

// class used to show a wxBusyCursor and a wxBusyInfo
// and hide them on demand
class Busy
{
    wxWindow* m_parent{ nullptr };
    std::unique_ptr<wxBusyCursor> m_cursor;
    std::unique_ptr<wxBusyInfo> m_dlg;

public:
    Busy(const wxString& message, wxWindow* parent = nullptr) {
        m_parent = parent;
        m_cursor = std::make_unique<wxBusyCursor>();
        m_dlg = std::make_unique<wxBusyInfo>(message, m_parent);
    }

    ~Busy() { reset(); }

    void update(const wxString& message) {
        // this is ugly but necessary because the call to wxBusyInfo::UpdateLabel() is not working [WX 3.1.4]
        m_dlg = std::make_unique<wxBusyInfo>(message, m_parent);
//        m_dlg->UpdateLabel(message);
    }

    void reset() {
        m_cursor.reset();
        m_dlg.reset();
    }
};

bool Plater::priv::replace_volume_with_stl(int object_idx, int volume_idx, const fs::path& new_path, const wxString& snapshot)
{
    const std::string path = new_path.string();
    Busy busy(_L("Replace from:") + " " + from_u8(path), q->get_current_canvas3D()->get_wxglcanvas());

    Model new_model;
    try {
        new_model = FileReader::load_model(path);
        for (ModelObject* model_object : new_model.objects) {
            model_object->center_around_origin();
            model_object->ensure_on_bed();
        }
    }
    catch (std::exception& e) {
        // error while loading
        busy.reset();
        GUI::show_error(q, e.what());
        return false;
    }

    if (new_model.objects.size() > 1 || new_model.objects.front()->volumes.size() > 1) {
        MessageDialog dlg(q, _L("Unable to replace with more than one volume"), _L("Error during replace"), wxOK | wxOK_DEFAULT | wxICON_WARNING);
        dlg.ShowModal();
        return false;
    }

    if (!snapshot.empty())
        q->take_snapshot(snapshot);

    ModelObject* old_model_object = model.objects[object_idx];
    ModelVolume* old_volume = old_model_object->volumes[volume_idx];

    bool sinking = old_model_object->min_z() < SINKING_Z_THRESHOLD;

    ModelObject* new_model_object = new_model.objects.front();
    old_model_object->add_volume(*new_model_object->volumes.front());
    ModelVolume* new_volume = old_model_object->volumes.back();
    new_volume->set_new_unique_id();
    new_volume->config.apply(old_volume->config);
    new_volume->set_type(old_volume->type());
    new_volume->set_material_id(old_volume->material_id());
    new_volume->set_transformation(old_volume->get_transformation());
    new_volume->translate(new_volume->get_transformation().get_matrix_no_offset() * (new_volume->source.mesh_offset - old_volume->source.mesh_offset));
    assert(!old_volume->source.is_converted_from_inches || !old_volume->source.is_converted_from_meters);
    if (old_volume->source.is_converted_from_inches)
        ModelProcessing::convert_from_imperial_units(new_volume);
    else if (old_volume->source.is_converted_from_meters)
        ModelProcessing::convert_from_meters(new_volume);

    if (old_volume->mesh().its == new_volume->mesh().its) {
        // This function is called both from reload_from_disk and replace_with_stl.
        // We need to make sure that the painted data point to existing triangles.
        new_volume->supported_facets.assign(old_volume->supported_facets);
        new_volume->seam_facets.assign(old_volume->seam_facets);
        new_volume->mm_segmentation_facets.assign(old_volume->mm_segmentation_facets);
        new_volume->fuzzy_skin_facets.assign(old_volume->fuzzy_skin_facets);
    }
    std::swap(old_model_object->volumes[volume_idx], old_model_object->volumes.back());
    old_model_object->delete_volume(old_model_object->volumes.size() - 1);
    if (!sinking)
        old_model_object->ensure_on_bed();
    old_model_object->sort_volumes(get_config_bool("order_volumes"));

    // if object has just one volume, rename object too
    if (old_model_object->volumes.size() == 1)
        old_model_object->name = old_model_object->volumes.front()->name;

    // update new name in ObjectList
    sidebar->obj_list()->update_name_in_list(object_idx, volume_idx);
    sidebar->obj_list()->update_item_error_icon(object_idx, volume_idx);

    sla::reproject_points_and_holes(old_model_object);

    return true;
}

void Plater::priv::replace_with_stl()
{
    if (! q->canvas3D()->get_gizmos_manager().check_gizmos_closed_except(GLGizmosManager::EType::Undefined))
        return;

    const Selection& selection = get_selection();

    if (selection.is_wipe_tower() || get_selection().get_volume_idxs().size() != 1)
        return;

    const GLVolume* v = selection.get_first_volume();
    int object_idx = v->object_idx();
    int volume_idx = v->volume_idx();

    // collects paths of files to load

    const ModelObject* object = model.objects[object_idx];
    const ModelVolume* volume = object->volumes[volume_idx];

    fs::path input_path;
    if (!volume->source.input_file.empty() && fs::exists(volume->source.input_file))
        input_path = volume->source.input_file;

    wxString title = _L("Select the new file");
    title += ":";
    wxFileDialog dialog(q, title, "", from_u8(input_path.filename().string()), file_wildcards(FT_MODEL), wxFD_OPEN | wxFD_FILE_MUST_EXIST);
    if (dialog.ShowModal() != wxID_OK)
        return;

    fs::path out_path = dialog.GetPath().ToUTF8().data();
    if (out_path.empty()) {
        MessageDialog dlg(q, _L("File for the replace wasn't selected"), _L("Error during replace"), wxOK | wxOK_DEFAULT | wxICON_WARNING);
        dlg.ShowModal();
        return;
    }

    if (!replace_volume_with_stl(object_idx, volume_idx, out_path, _L("Replace with STL")))
        return;

    // update 3D scene
    update();

    // new GLVolumes have been created at this point, so update their printable state
    for (size_t i = 0; i < model.objects.size(); ++i) {
        view3D->get_canvas3d()->update_instance_printable_state_for_object(i);
    }
}

static std::vector<std::pair<int, int>> reloadable_volumes(const Model& model, const Selection& selection)
{
    std::vector<std::pair<int, int>> ret;
    const std::set<unsigned int>& selected_volumes_idxs = selection.get_volume_idxs();
    for (unsigned int idx : selected_volumes_idxs) {
        const GLVolume& v = *selection.get_volume(idx);
        const int o_idx = v.object_idx();
        if (0 <= o_idx && o_idx < int(model.objects.size())) {
            const ModelObject* obj = model.objects[o_idx];
            const int v_idx = v.volume_idx();
            if (0 <= v_idx && v_idx < int(obj->volumes.size())) {
                const ModelVolume* vol = obj->volumes[v_idx];
                if (!vol->source.is_from_builtin_objects && !vol->source.input_file.empty() &&
                    !fs::path(vol->source.input_file).extension().string().empty())
                    ret.push_back({ o_idx, v_idx });
            }
        }
    }
    return ret;
}

void Plater::priv::reload_from_disk()
{
    // collect selected reloadable ModelVolumes
    std::vector<std::pair<int, int>> selected_volumes = reloadable_volumes(model, get_selection());

    // nothing to reload, return
    if (selected_volumes.empty())
        return;

    std::sort(selected_volumes.begin(), selected_volumes.end(), [](const std::pair<int, int>& v1, const std::pair<int, int>& v2) {
        return (v1.first < v2.first) || (v1.first == v2.first && v1.second < v2.second);
        });

    selected_volumes.erase(std::unique(selected_volumes.begin(), selected_volumes.end(), [](const std::pair<int, int>& v1, const std::pair<int, int>& v2) {
        return (v1.first == v2.first) && (v1.second == v2.second); }), selected_volumes.end());

    // collects paths of files to load
    std::vector<fs::path> input_paths;
    std::vector<fs::path> missing_input_paths;
    std::vector<std::pair<fs::path, fs::path>> replace_paths;
    for (auto [obj_idx, vol_idx] : selected_volumes) {
        const ModelObject* object = model.objects[obj_idx];
        const ModelVolume* volume = object->volumes[vol_idx];
        if (fs::exists(volume->source.input_file))
            input_paths.push_back(volume->source.input_file);
        else {
            // searches the source in the same folder containing the object
            bool found = false;
            if (!object->input_file.empty()) {
                fs::path object_path = fs::path(object->input_file).remove_filename();
                if (!object_path.empty()) {
                    object_path /= fs::path(volume->source.input_file).filename();
                    if (fs::exists(object_path)) {
                        input_paths.push_back(object_path);
                        found = true;
                    }
                }
            }
            if (!found)
                missing_input_paths.push_back(volume->source.input_file);
        }
    }

    std::sort(missing_input_paths.begin(), missing_input_paths.end());
    missing_input_paths.erase(std::unique(missing_input_paths.begin(), missing_input_paths.end()), missing_input_paths.end());

    while (!missing_input_paths.empty()) {
        // ask user to select the missing file
        fs::path search = missing_input_paths.back();
        wxString title = _L("Please select the file to reload");
#if defined(__APPLE__)
        title += " (" + from_u8(search.filename().string()) + ")";
#endif // __APPLE__
        title += ":";
        wxFileDialog dialog(q, title, "", from_u8(search.filename().string()), file_wildcards(FT_MODEL), wxFD_OPEN | wxFD_FILE_MUST_EXIST);
        if (dialog.ShowModal() != wxID_OK)
            return;

        std::string sel_filename_path = dialog.GetPath().ToUTF8().data();
        std::string sel_filename = fs::path(sel_filename_path).filename().string();
        if (boost::algorithm::iequals(search.filename().string(), sel_filename)) {
            input_paths.push_back(sel_filename_path);
            missing_input_paths.pop_back();

            fs::path sel_path = fs::path(sel_filename_path).remove_filename().string();

            std::vector<fs::path>::iterator it = missing_input_paths.begin();
            while (it != missing_input_paths.end()) {
                // try to use the path of the selected file with all remaining missing files
                fs::path repathed_filename = sel_path;
                repathed_filename /= it->filename();
                if (fs::exists(repathed_filename)) {
                    input_paths.push_back(repathed_filename.string());
                    it = missing_input_paths.erase(it);
                }
                else
                    ++it;
            }
        }
        else {
            wxString message = _L("The selected file") + " (" + from_u8(sel_filename) + ") " +
                _L("differs from the original file") + " (" + from_u8(search.filename().string()) + ").\n" + _L("Do you want to replace it") + " ?";
            //wxMessageDialog dlg(q, message, wxMessageBoxCaptionStr, wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION);
            MessageDialog dlg(q, message, wxMessageBoxCaptionStr, wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION);
            if (dlg.ShowModal() == wxID_YES)
                replace_paths.emplace_back(search, sel_filename_path);

            missing_input_paths.pop_back();
        }
    }

    std::sort(input_paths.begin(), input_paths.end());
    input_paths.erase(std::unique(input_paths.begin(), input_paths.end()), input_paths.end());

    std::sort(replace_paths.begin(), replace_paths.end());
    replace_paths.erase(std::unique(replace_paths.begin(), replace_paths.end()), replace_paths.end());

    Plater::TakeSnapshot snapshot(q, _L("Reload from disk"));

    std::vector<wxString> fail_list;

    Busy busy(_L("Reload from:"), q->get_current_canvas3D()->get_wxglcanvas());

    // load one file at a time
    for (size_t i = 0; i < input_paths.size(); ++i) {
        const auto& path = input_paths[i].string();

        busy.update(_L("Reload from:") + " " + from_u8(path));

        Model new_model;
        try
        {
            new_model = FileReader::load_model(path);
            for (ModelObject* model_object : new_model.objects) {
                model_object->center_around_origin();
                model_object->ensure_on_bed();
            }
        }
        catch (std::exception& e)
        {
            // error while loading
            busy.reset();
            GUI::show_error(q, e.what());
            return;
        }

        // update the selected volumes whose source is the current file
        for (auto [obj_idx, vol_idx] : selected_volumes) {
            ModelObject* old_model_object = model.objects[obj_idx];
            ModelVolume* old_volume = old_model_object->volumes[vol_idx];

            bool sinking = old_model_object->min_z() < SINKING_Z_THRESHOLD;

            bool has_source = !old_volume->source.input_file.empty() && boost::algorithm::iequals(fs::path(old_volume->source.input_file).filename().string(), fs::path(path).filename().string());
            bool has_name = !old_volume->name.empty() && boost::algorithm::iequals(old_volume->name, fs::path(path).filename().string());
            if (has_source || has_name) {
                int new_volume_idx = -1;
                int new_object_idx = -1;
                bool match_found = false;
                // take idxs from the matching volume
                if (has_source && old_volume->source.object_idx < int(new_model.objects.size())) {
                    const ModelObject* obj = new_model.objects[old_volume->source.object_idx];
                    if (old_volume->source.volume_idx < int(obj->volumes.size())) {
                        if (obj->volumes[old_volume->source.volume_idx]->name == old_volume->name) {
                            new_volume_idx = old_volume->source.volume_idx;
                            new_object_idx = old_volume->source.object_idx;
                            match_found = true;
                        }
                    }
                }

                if (!match_found && has_name) {
                    // take idxs from the 1st matching volume
                    for (size_t o = 0; o < new_model.objects.size(); ++o) {
                        ModelObject* obj = new_model.objects[o];
                        bool found = false;
                        for (size_t v = 0; v < obj->volumes.size(); ++v) {
                            if (obj->volumes[v]->name == old_volume->name) {
                                new_volume_idx = (int)v;
                                new_object_idx = (int)o;
                                found = true;
                                break;
                            }
                        }
                        if (found)
                            break;
                    }
                }

                if (new_object_idx < 0 || int(new_model.objects.size()) <= new_object_idx) {
                    fail_list.push_back(from_u8(has_source ? old_volume->source.input_file : old_volume->name));
                    continue;
                }
                ModelObject* new_model_object = new_model.objects[new_object_idx];
                if (new_volume_idx < 0 || int(new_model_object->volumes.size()) <= new_volume_idx) {
                    fail_list.push_back(from_u8(has_source ? old_volume->source.input_file : old_volume->name));
                    continue;
                }

                old_model_object->add_volume(*new_model_object->volumes[new_volume_idx]);
                ModelVolume* new_volume = old_model_object->volumes.back();
                new_volume->set_new_unique_id();
                new_volume->config.apply(old_volume->config);
                new_volume->set_type(old_volume->type());
                new_volume->set_material_id(old_volume->material_id());
                new_volume->set_transformation(
                    old_volume->get_transformation().get_matrix() *
                    old_volume->source.transform.get_matrix_no_offset() *
                    Geometry::translation_transform(new_volume->source.mesh_offset - old_volume->source.mesh_offset) *
                    new_volume->source.transform.get_matrix_no_offset().inverse()
                    );
                new_volume->source.object_idx = old_volume->source.object_idx;
                new_volume->source.volume_idx = old_volume->source.volume_idx;
                assert(!old_volume->source.is_converted_from_inches || !old_volume->source.is_converted_from_meters);
                if (old_volume->source.is_converted_from_inches)
                    ModelProcessing::convert_from_imperial_units(new_volume);
                else if (old_volume->source.is_converted_from_meters)
                    ModelProcessing::convert_from_meters(new_volume);
                std::swap(old_model_object->volumes[vol_idx], old_model_object->volumes.back());
                old_model_object->delete_volume(old_model_object->volumes.size() - 1);
                if (!sinking)
                    old_model_object->ensure_on_bed();
                old_model_object->sort_volumes(get_config_bool("order_volumes"));

                sla::reproject_points_and_holes(old_model_object);

                // Fix warning icon in object list
                wxGetApp().obj_list()->update_item_error_icon(obj_idx, vol_idx);
            }
        }
    }

    busy.reset();

    for (auto [src, dest] : replace_paths) {
        for (auto [obj_idx, vol_idx] : selected_volumes) {
            if (boost::algorithm::iequals(model.objects[obj_idx]->volumes[vol_idx]->source.input_file, src.string()))
                replace_volume_with_stl(obj_idx, vol_idx, dest, "");
        }
    }

    if (!fail_list.empty()) {
        wxString message = _L("Unable to reload:") + "\n";
        for (const wxString& s : fail_list) {
            message += s + "\n";
        }
        //wxMessageDialog dlg(q, message, _L("Error during reload"), wxOK | wxOK_DEFAULT | wxICON_WARNING);
        MessageDialog dlg(q, message, _L("Error during reload"), wxOK | wxOK_DEFAULT | wxICON_WARNING);
        dlg.ShowModal();
    }

    // update 3D scene
    update();

    // new GLVolumes have been created at this point, so update their printable state
    for (size_t i = 0; i < model.objects.size(); ++i) {
        view3D->get_canvas3d()->update_instance_printable_state_for_object(i);
    }
}

void Plater::priv::reload_all_from_disk()
{
    if (model.objects.empty())
        return;

    Plater::TakeSnapshot snapshot(q, _L("Reload all from disk"));
    Plater::SuppressSnapshots suppress(q);

    Selection& selection = get_selection();
    Selection::IndicesList curr_idxs = selection.get_volume_idxs();
    // reload from disk uses selection
    select_all();
    reload_from_disk();
    // restore previous selection
    selection.clear();
    for (unsigned int idx : curr_idxs) {
        selection.add(idx, false);
    }
}

void Plater::priv::set_current_panel(wxPanel* panel)
{
    if (std::find(panels.begin(), panels.end(), panel) == panels.end())
        return;

#ifdef __WXMAC__
    bool force_render = (current_panel != nullptr);
#endif // __WXMAC__

    ScopeGuard guard([]() { s_reload_preview_after_switching_beds = false; });

    if (current_panel == panel) {
        if (! s_reload_preview_after_switching_beds)
            return;
        else {
            update_background_process();
        }
    }

    wxPanel* old_panel = current_panel;
    current_panel = panel;
    // to reduce flickering when changing view, first set as visible the new current panel
    for (wxPanel* p : panels) {
        if (p == current_panel) {
#ifdef __WXMAC__
            // On Mac we need also to force a render to avoid flickering when changing view
            if (force_render) {
                if (p == view3D)
                    dynamic_cast<View3D*>(p)->get_canvas3d()->render();
                else if (p == preview)
                    dynamic_cast<Preview*>(p)->get_canvas3d()->render();
            }
#endif // __WXMAC__
            p->Show();
        }
    }
    // then set to invisible the other
    for (wxPanel* p : panels) {
        if (p != current_panel)
            p->Hide();
    }

    panel_sizer->Layout();

    if (current_panel == view3D) {

        if(s_multiple_beds.stop_autoslice(true)) {
            sidebar->switch_from_autoslicing_mode();
            update_background_process();
        }

        if (old_panel == preview)
            preview->get_canvas3d()->unbind_event_handlers();

        view3D->get_canvas3d()->bind_event_handlers();

        if (view3D->is_reload_delayed()) {
            // Delayed loading of the 3D scene.
            if (printer_technology == ptSLA) {
                // Update the SLAPrint from the current Model, so that the reload_scene()
                // pulls the correct data.
                update_restart_background_process(true, false);
            } else
                view3D->reload_scene(true);
        }

        // sets the canvas as dirty to force a render at the 1st idle event (wxWidgets IsShownOnScreen() is buggy and cannot be used reliably)
        view3D->set_as_dirty();
        // reset cached size to force a resize on next call to render() to keep imgui in synch with canvas size
        view3D->get_canvas3d()->reset_old_size();
        view_toolbar.select_item("3D");
        if (notification_manager != nullptr)
            notification_manager->set_in_preview(false);
    }
    else if (current_panel == preview) {
        if (old_panel == view3D)
            view3D->get_canvas3d()->unbind_event_handlers();

        preview->get_canvas3d()->bind_event_handlers();

        if (wxGetApp().is_editor()) {
            // see: Plater::priv::object_list_changed()
            bool export_in_progress = this->background_process.is_export_scheduled();
            if (
                s_multiple_beds.is_bed_occupied(s_multiple_beds.get_active_bed())
                && !export_in_progress
                && is_sliceable(s_print_statuses[s_multiple_beds.get_active_bed()])
            ) {
                preview->get_canvas3d()->init_gcode_viewer();
                preview->get_canvas3d()->load_gcode_shells();
                q->reslice();
            }
            // keeps current gcode preview, if any
            preview->reload_print();

            if (! s_multiple_beds.is_bed_occupied(s_multiple_beds.get_active_bed()))
                preview->get_canvas3d()->reset_gcode_toolpaths();

        }

        preview->set_as_dirty();
        // reset cached size to force a resize on next call to render() to keep imgui in synch with canvas size
        preview->get_canvas3d()->reset_old_size();
        view_toolbar.select_item("Preview");
        if (notification_manager != nullptr)
            notification_manager->set_in_preview(true);
    }

    current_panel->SetFocusFromKbd();
}

void Plater::priv::on_slicing_update(SlicingStatusEvent &evt)
{
    if (evt.status.percent >= -1) {
        if (!m_worker.is_idle()) {
            // Avoid a race condition
            return;
        }
        notification_manager->set_slicing_progress_percentage(evt.status.text, (float)evt.status.percent / 100.0f);
    }

    // Check template filaments and add warning
    // This is more convinient to do here than in slicing backend, so it happens on "Slicing complete".
    if (evt.status.percent >= 100 && this->printer_technology == ptFFF) {
        size_t templ_cnt = 0;
        const auto& preset_bundle = wxGetApp().preset_bundle;
        std::string names;
        for (const auto& extruder_filaments : preset_bundle->extruders_filaments) {
            const Preset* preset = extruder_filaments.get_selected_preset();
            if (preset && preset->vendor && preset->vendor->templates_profile) {
                names += "\n" + preset->name;
                templ_cnt++;
            }
        }
        if (templ_cnt > 0) {
            const std::string message_notif = GUI::format("%1%\n%2%\n\n%3%\n\n%4% "
                , _L_PLURAL("You are using template filament preset.", "You are using template filament presets.", templ_cnt)
                , names
                , _u8L("Please note that template presets are not customized for specific printer and should only be used as a starting point for creating your own user presets.")
                ,_u8L("More info at"));
            // warning dialog proccessing cuts text at first '/n' - pass the text without new lines (and without filament names).
            const std::string message_dial = GUI::format("%1% %2% %3%"
                , _L_PLURAL("You are using template filament preset.", "You are using template filament presets.", templ_cnt)
                , _u8L("Please note that template presets are not customized for specific printer and should only be used as a starting point for creating your own user presets.")
                , "<a href=https://help.prusa3d.com/article/template-filaments_467599>https://help.prusa3d.com/</a>"
            );
            BOOST_LOG_TRIVIAL(warning) << message_notif;
            notification_manager->push_slicing_warning_notification(message_notif, false, 0, 0, "https://help.prusa3d.com/", 
                [](wxEvtHandler* evnthndlr) { wxGetApp().open_browser_with_warning_dialog("https://help.prusa3d.com/article/template-filaments_467599"); return false; }
                );
            add_warning({ PrintStateBase::WarningLevel::CRITICAL, true, message_dial, 0}, 0);
        }
    }

    if (evt.status.flags & (PrintBase::SlicingStatus::RELOAD_SCENE | PrintBase::SlicingStatus::RELOAD_SLA_SUPPORT_POINTS)) {
        switch (this->printer_technology) {
        case ptFFF:
            this->update_fff_scene();
            break;
        case ptSLA:
            // If RELOAD_SLA_SUPPORT_POINTS, then the SLA gizmo is updated (reload_scene calls update_gizmos_data)
            if (view3D->is_dragging())
                delayed_scene_refresh = true;
            else {
                view3D->get_canvas3d()->enable_sla_view_type_detection();
                this->update_sla_scene();
            }
            break;
        default: break;
        }
    } else if (evt.status.flags & PrintBase::SlicingStatus::RELOAD_SLA_PREVIEW) {
        // Update the SLA preview. Only called if not RELOAD_SLA_SUPPORT_POINTS, as the block above will refresh the preview anyways.
        this->preview->reload_print();
    }


    std::vector<ObjectID> object_ids = { evt.status.warning_object_id };
    std::vector<int> warning_steps = { evt.status.warning_step };
    std::vector<int> flagss = { int(evt.status.flags) };

    if (warning_steps.front() == -1) {
        flagss = { PrintBase::SlicingStatus::UPDATE_PRINT_STEP_WARNINGS, PrintBase::SlicingStatus::UPDATE_PRINT_OBJECT_STEP_WARNINGS };
        notification_manager->close_slicing_errors_and_warnings();
    }

    for (int flags : flagss ) {
        if (warning_steps.front() == -1) {
            warning_steps.clear();
            if (flags == PrintBase::SlicingStatus::UPDATE_PRINT_STEP_WARNINGS) {
                int i = 0;
                while (i < int(printer_technology == ptFFF ? psCount : slapsCount)) { warning_steps.push_back(i); ++i; }
            } else {
                int i = 0;
                while (i < int(printer_technology == ptFFF ? posCount : slaposCount)) { warning_steps.push_back(i); ++i; }
                for (const PrintObject* po : wxGetApp().plater()->active_fff_print().objects())
                    object_ids.push_back(po->id());
            }
        }





        for (int warning_step : warning_steps) {
            for (ObjectID object_id : object_ids) {
                if ((flags & PrintBase::SlicingStatus::UPDATE_PRINT_STEP_WARNINGS) &&
                    static_cast<PrintStep>(warning_step) == psAlertWhenSupportsNeeded &&
                    !get_app_config()->get_bool("alert_when_supports_needed")) {
                    // This alerts are from psAlertWhenSupportsNeeded and the respective app settings is not Enabled, so discard the alerts.
                }
                else if (flags &
                    (PrintBase::SlicingStatus::UPDATE_PRINT_STEP_WARNINGS | PrintBase::SlicingStatus::UPDATE_PRINT_OBJECT_STEP_WARNINGS)) {
                    // Update notification center with warnings of object_id and its warning_step.

                    PrintStateBase::StateWithWarnings state;
                    if (flags & PrintBase::SlicingStatus::UPDATE_PRINT_STEP_WARNINGS) {
                        state = this->printer_technology == ptFFF ?
                            q->active_fff_print().step_state_with_warnings(static_cast<PrintStep>(warning_step)) :
                            q->active_sla_print().step_state_with_warnings(static_cast<SLAPrintStep>(warning_step));
                    }
                    else if (this->printer_technology == ptFFF) {
                        const PrintObject* print_object = q->active_fff_print().get_object(object_id);
                        if (print_object)
                            state = print_object->step_state_with_warnings(static_cast<PrintObjectStep>(warning_step));
                    }
                    else {
                        const SLAPrintObject* print_object = q->active_sla_print().get_object(object_id);
                        if (print_object)
                            state = print_object->step_state_with_warnings(static_cast<SLAPrintObjectStep>(warning_step));
                    }
                    // Now process state.warnings.
                    for (auto const& warning : state.warnings) {
                        if (warning.current) {
                            notification_manager->push_slicing_warning_notification(warning.message, false, object_id, warning_step);
                            add_warning(warning, object_id.id);
                        }
                    }
                }
            }
        }
    }
}

void Plater::priv::on_slicing_completed(wxCommandEvent & evt)
{
    if (view3D->is_dragging()) // updating scene now would interfere with the gizmo dragging
        delayed_scene_refresh = true;
    else {
        if (this->printer_technology == ptFFF)
            this->update_fff_scene();
        else
            this->update_sla_scene();
    }
}

void Plater::priv::on_export_began(wxCommandEvent& evt)
{
	if (show_warning_dialog)
		warnings_dialog();  
}
void Plater::priv::on_slicing_began()
{
	clear_warnings();
    notification_manager->close_notification_of_type(NotificationType::SignDetected);
    notification_manager->close_notification_of_type(NotificationType::ExportFinished);
    notification_manager->set_slicing_progress_began();
    s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::running;
}
void Plater::priv::add_warning(const Slic3r::PrintStateBase::Warning& warning, size_t oid)
{
	for (auto const& it : current_warnings) {
		if (warning.message_id == it.first.message_id) {
			if (warning.message_id != 0 || (warning.message_id == 0 && warning.message == it.first.message))
				return;
		} 
	}
	current_warnings.emplace_back(std::pair<Slic3r::PrintStateBase::Warning, size_t>(warning, oid));
}
void Plater::priv::actualize_slicing_warnings(const PrintBase &print)
{
    std::vector<ObjectID> ids = print.print_object_ids();
    if (ids.empty()) {
        clear_warnings();
        return;
    }
    ids.emplace_back(print.id());
    std::sort(ids.begin(), ids.end());
	notification_manager->remove_slicing_warnings_of_released_objects(ids);
    notification_manager->set_all_slicing_warnings_gray(true);
}
void Plater::priv::actualize_object_warnings(const PrintBase& print)
{
    std::vector<ObjectID> ids;
    for (const ModelObject* object : print.model().objects )
    {
        ids.push_back(object->id());
    }
    std::sort(ids.begin(), ids.end());
    notification_manager->remove_simplify_suggestion_of_released_objects(ids);
}
void Plater::priv::clear_warnings()
{
	notification_manager->close_slicing_errors_and_warnings();
	this->current_warnings.clear();
}
bool Plater::priv::warnings_dialog()
{
    std::vector<std::pair<Slic3r::PrintStateBase::Warning, size_t>> current_critical_warnings{};
    for (const auto& w : current_warnings) {
        if (w.first.level == PrintStateBase::WarningLevel::CRITICAL) {
            current_critical_warnings.push_back(w);
        }
    }

	if (current_critical_warnings.empty())
		return true;
	std::string text = _u8L("There are active warnings concerning sliced models:") + "\n";
	for (auto const& it : current_critical_warnings) {
		text += "\n\n";
	    text += it.first.message;
	}
    // Changed to InfoDialog so it can show hyperlinks
    InfoDialog msg_wingow(this->q, format_wxstr("%1% %2%", SLIC3R_APP_NAME, _L("generated warnings")), from_u8(text), true);
	const auto res = msg_wingow.ShowModal();
	return res == wxID_OK;

}
void Plater::priv::on_process_completed(SlicingProcessCompletedEvent &evt)
{
    // Stop the background task, wait until the thread goes into the "Idle" state.
    // At this point of time the thread should be either finished or canceled,
    // so the following call just confirms, that the produced data were consumed.
    this->background_process.stop();
    notification_manager->set_slicing_progress_export_possible();

    // Reset the "export G-code path" name, so that the automatic background processing will be enabled again.
    this->background_process.reset_export();
    // This bool stops showing export finished notification even when process_completed_with_error is false
    bool has_error = false;
    if (evt.error()) {
        std::pair<std::string, bool> message = evt.format_error_message();
        if (evt.critical_error()) {
            if (q->m_tracking_popup_menu) {
                // We don't want to pop-up a message box when tracking a pop-up menu.
                // We postpone the error message instead.
                q->m_tracking_popup_menu_error_message = message.first;
            } else {
                show_error(q, message.first, message.second);
                notification_manager->set_slicing_progress_hidden();
                notification_manager->stop_delayed_notifications_of_type(NotificationType::ExportOngoing);
            }
        } else
            notification_manager->push_slicing_error_notification(message.first);
        if (evt.invalidate_plater())
        {
            const wxString invalid_str = _L("Invalid data");
            for (auto btn : { ActionButtonType::Reslice, ActionButtonType::SendGCode, ActionButtonType::Export })
                sidebar->set_btn_label(btn, invalid_str);
        }
        has_error = true;
        s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::invalid;
    }
    if (evt.cancelled()) {
        this->notification_manager->set_slicing_progress_canceled(_u8L("Slicing Cancelled."));
        s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::idle;
    }

    this->sidebar->show_sliced_info_sizer(evt.success());
    if (evt.success()) {
        s_print_statuses[s_multiple_beds.get_active_bed()] = PrintStatus::finished;
    }

    // This updates the "Slice now", "Export G-code", "Arrange" buttons status.
    // Namely, it refreshes the "Out of print bed" property of all the ModelObjects, and it enables
    // the "Slice now" and "Export G-code" buttons based on their "out of bed" status.
    this->object_list_changed();

    // refresh preview
    if (view3D->is_dragging()) // updating scene now would interfere with the gizmo dragging
        delayed_scene_refresh = true;
    else {
        if (this->printer_technology == ptFFF)
            this->update_fff_scene();
        else
            this->update_sla_scene();
    }
	
    if (evt.cancelled()) {
        if (wxGetApp().get_mode() == comSimple)
            sidebar->set_btn_label(ActionButtonType::Reslice, "Slice now");
        show_action_buttons(true);
    } else {
        if(wxGetApp().get_mode() == comSimple) {
            show_action_buttons(false);
        }
        if (exporting_status != ExportingStatus::NOT_EXPORTING && !has_error) {
            notification_manager->stop_delayed_notifications_of_type(NotificationType::ExportOngoing);
            notification_manager->close_notification_of_type(NotificationType::ExportOngoing);
        }
        // If writing to removable drive was scheduled, show notification with eject button
        if (exporting_status == ExportingStatus::EXPORTING_TO_REMOVABLE && !has_error) {
            show_action_buttons(false);
            notification_manager->push_exporting_finished_notification(last_output_path, last_output_dir_path,
                // Don't offer the "Eject" button on ChromeOS, the Linux side has no control over it.
                platform_flavor() != PlatformFlavor::LinuxOnChromium);
            wxGetApp().removable_drive_manager()->set_exporting_finished(true);
        }else if (exporting_status == ExportingStatus::EXPORTING_TO_LOCAL && !has_error)
            notification_manager->push_exporting_finished_notification(last_output_path, last_output_dir_path, false);
    }
    exporting_status = ExportingStatus::NOT_EXPORTING;
}

void Plater::priv::on_layer_editing_toggled(bool enable)
{
    view3D->enable_layers_editing(enable);
    view3D->set_as_dirty();
}

void Plater::priv::on_action_add(SimpleEvent&)
{
    if (q != nullptr)
        q->add_model();
}

void Plater::priv::on_action_split_objects(SimpleEvent&)
{
    split_object();
}

void Plater::priv::on_action_split_volumes(SimpleEvent&)
{
    split_volume();
}

void Plater::priv::on_action_layersediting(SimpleEvent&)
{
    const bool enable_layersediting = !view3D->is_layers_editing_enabled();
    view3D->enable_layers_editing(enable_layersediting);
    if (enable_layersediting)
        view3D->get_canvas3d()->reset_all_gizmos();
    notification_manager->set_move_from_overlay(view3D->is_layers_editing_enabled());
}

void Plater::priv::on_object_select(SimpleEvent& evt)
{
    if (auto obj_list = wxGetApp().obj_list())
        obj_list->update_selections();
    else
        return;
    selection_changed();
}

void Plater::priv::on_right_click(RBtnEvent& evt)
{
    int obj_idx = get_selected_object_idx();

    wxMenu* menu = nullptr;

    if (obj_idx == -1) { // no one or several object are selected
        if (evt.data.second) { // right button was clicked on empty space
            if (!get_selection().is_empty()) // several objects are selected in 3DScene
                return;
            if (s_multiple_beds.get_last_hovered_bed() != -1)
                menu = menus.default_menu();
        }
        else
            menu = menus.multi_selection_menu();
    }
    else {
        // If in 3DScene is(are) selected volume(s), but right button was clicked on empty space
        if (evt.data.second)
            return;

        // Each context menu respects to the selected item in ObjectList, 
        // so this selection should be updated before menu creation
        wxGetApp().obj_list()->update_selections();

//        if (printer_technology == ptSLA)
//            menu = menus.sla_object_menu();
//        else {
            const Selection& selection = get_selection();
            // show "Object menu" for each one or several FullInstance instead of FullObject
            const bool is_some_full_instances = selection.is_single_full_instance() || 
                                                selection.is_single_full_object() || 
                                                selection.is_multiple_full_instance();
            const bool is_part = selection.is_single_volume_or_modifier() && ! selection.is_any_connector();
            if (is_some_full_instances)
                menu = printer_technology == ptSLA ? menus.sla_object_menu() : menus.object_menu();
            else if (is_part) {
                const GLVolume* gl_volume = selection.get_first_volume();
                const ModelVolume *model_volume = get_model_volume(*gl_volume, selection.get_model()->objects);
                menu = (model_volume != nullptr && model_volume->is_text()) ? menus.text_part_menu() :
                       (model_volume != nullptr && model_volume->is_svg()) ? menus.svg_part_menu() : 
                    menus.part_menu();
            } else
                menu = menus.multi_selection_menu();
//        }
    }

    if (q != nullptr && menu) {
        Vec2d mouse_position = evt.data.first;
        wxPoint position(static_cast<int>(mouse_position.x()),
                         static_cast<int>(mouse_position.y()));
#ifdef __linux__
        // For some reason on Linux the menu isn't displayed if position is
        // specified (even though the position is sane).
        position = wxDefaultPosition;
#endif
        GLCanvas3D &canvas = *q->canvas3D();
        canvas.apply_retina_scale(mouse_position);
        canvas.set_popup_menu_position(mouse_position);
        q->PopupMenu(menu, position);
        canvas.clear_popup_menu_position();
    }
}

void Plater::priv::on_update_geometry(Vec3dsEvent<2>&)
{
    // TODO
}

void Plater::priv::on_3dcanvas_mouse_dragging_started(SimpleEvent&)
{
}

// Update the scene from the background processing,
// if the update message was received during mouse manipulation.
void Plater::priv::on_3dcanvas_mouse_dragging_finished(SimpleEvent&)
{
    if (delayed_scene_refresh) {
        delayed_scene_refresh = false;
        update_sla_scene();
    }
}

void Plater::priv::generate_thumbnail(ThumbnailData& data, unsigned int w, unsigned int h, const ThumbnailsParams& thumbnail_params, Camera::EType camera_type)
{
    view3D->get_canvas3d()->render_thumbnail(data, w, h, thumbnail_params, camera_type);
}

ThumbnailsList Plater::priv::generate_thumbnails(const ThumbnailsParams& params, Camera::EType camera_type)
{
    s_multiple_beds.set_thumbnail_bed_idx(s_multiple_beds.get_active_bed());
    ScopeGuard guard([]() { s_multiple_beds.set_thumbnail_bed_idx(-1); });
    ThumbnailsList thumbnails;
    for (const Vec2d& size : params.sizes) {
        thumbnails.push_back(ThumbnailData());
        Point isize(size); // round to ints
        generate_thumbnail(thumbnails.back(), isize.x(), isize.y(), params, camera_type);
        if (!thumbnails.back().is_valid())
            thumbnails.pop_back();
    }
    return thumbnails;
}

wxString Plater::priv::get_project_filename(const wxString& extension) const
{
    return m_project_filename.empty() ? "" : m_project_filename + extension;
}

void Plater::priv::set_project_filename(const wxString& filename)
{
    boost::filesystem::path full_path = into_path(filename);
    boost::filesystem::path ext = full_path.extension();
    if (boost::iequals(ext.string(), ".amf")) {
        // Remove the first extension.
        full_path.replace_extension("");
        // It may be ".zip.amf".
        if (boost::iequals(full_path.extension().string(), ".zip"))
            // Remove the 2nd extension.
            full_path.replace_extension("");
    } else {
        // Remove just one extension.
        full_path.replace_extension("");
    }

    m_project_filename = from_path(full_path);
    wxGetApp().mainframe->update_title();

    const fs::path temp_path = wxStandardPaths::Get().GetTempDir().utf8_str().data();
    bool in_temp = (temp_path == full_path.parent_path().make_preferred());

    if (!filename.empty() && !in_temp)
        wxGetApp().mainframe->add_to_recent_projects(filename);
}

void Plater::priv::init_notification_manager()
{
    if (!notification_manager)
        return;
    notification_manager->init();

    auto cancel_callback = [this]() {
        if (this->background_process.idle())
            return false;
        this->background_process.stop();
        return true;
    };
    notification_manager->init_slicing_progress_notification(cancel_callback);
    notification_manager->set_fff(printer_technology == ptFFF);
    notification_manager->init_progress_indicator();
}

void Plater::priv::set_current_canvas_as_dirty()
{
    if (current_panel == view3D)
        view3D->set_as_dirty();
    else if (current_panel == preview)
        preview->set_as_dirty();
}

GLCanvas3D* Plater::priv::get_current_canvas3D()
{
    return (current_panel == view3D) ? view3D->get_canvas3d() : ((current_panel == preview) ? preview->get_canvas3d() : nullptr);
}

void Plater::priv::render_sliders(GLCanvas3D& canvas)
{
    if (current_panel == preview)
        preview->render_sliders(canvas);
}

void Plater::priv::unbind_canvas_event_handlers()
{
    if (view3D != nullptr)
        view3D->get_canvas3d()->unbind_event_handlers();

    if (preview != nullptr)
        preview->get_canvas3d()->unbind_event_handlers();
}

void Plater::priv::reset_canvas_volumes()
{
    if (view3D != nullptr)
        view3D->get_canvas3d()->reset_volumes();

    if (preview != nullptr)
        preview->get_canvas3d()->reset_volumes();
}

bool Plater::priv::init_view_toolbar()
{
    //if (wxGetApp().is_gcode_viewer())
    //    return true;

    if (view_toolbar.get_items_count() > 0)
        // already initialized
        return true;

    BackgroundTexture::Metadata background_data;
    background_data.filename = "toolbar_background.png";
    background_data.left = 16;
    background_data.top = 16;
    background_data.right = 16;
    background_data.bottom = 16;

    if (!view_toolbar.init(background_data))
        return false;

    view_toolbar.set_horizontal_orientation(GLToolbar::Layout::HO_Left);
    view_toolbar.set_vertical_orientation(GLToolbar::Layout::VO_Bottom);
    //view_toolbar.set_border(5.0f);
    //view_toolbar.set_gap_size(1.0f);

    GLToolbarItem::Data item;

    unsigned int sprite_id = 0;

    item.name = "3D";
    item.icon_filename = "editor.svg";
    item.tooltip = _u8L("3D editor view") + " [" + GUI::shortkey_ctrl_prefix() + "5]";
    item.sprite_id = sprite_id++;
    item.left.action_callback = [this]() { if (this->q != nullptr) wxPostEvent(this->q, SimpleEvent(EVT_GLVIEWTOOLBAR_3D)); };
    if (!view_toolbar.add_item(item))
        return false;

    item.name = "Preview";
    item.icon_filename = "preview.svg";
    item.tooltip = _u8L("Preview") + " [" + GUI::shortkey_ctrl_prefix() + "6]";
    item.sprite_id = sprite_id++;
    item.left.action_callback = [this]() { if (this->q != nullptr) wxPostEvent(this->q, SimpleEvent(EVT_GLVIEWTOOLBAR_PREVIEW)); };
    if (!view_toolbar.add_item(item))
        return false;

    if (!view_toolbar.generate_icons_texture())
        return false;

    view_toolbar.select_item("3D");
    if (wxGetApp().is_editor())
        view_toolbar.set_enabled(true);

    return true;
}

bool Plater::priv::init_collapse_toolbar()
{
    //if (wxGetApp().is_gcode_viewer())
    //    return true;

    if (collapse_toolbar.get_items_count() > 0)
        // already initialized
        return true;

    BackgroundTexture::Metadata background_data;
    background_data.filename = "toolbar_background.png";
    background_data.left = 16;
    background_data.top = 16;
    background_data.right = 16;
    background_data.bottom = 16;

    if (!collapse_toolbar.init(background_data))
        return false;

    collapse_toolbar.set_layout_type(GLToolbar::Layout::Vertical);
    collapse_toolbar.set_horizontal_orientation(GLToolbar::Layout::HO_Right);
    collapse_toolbar.set_vertical_orientation(GLToolbar::Layout::VO_Top);
    //collapse_toolbar.set_border(5.0f);
    //collapse_toolbar.set_separator_size(5);
    //collapse_toolbar.set_gap_size(2);

    GLToolbarItem::Data item;

    item.name = "collapse_sidebar";
    item.icon_filename = "collapse.svg";
    item.sprite_id = 0;
    item.left.action_callback = []() {
        wxGetApp().plater()->collapse_sidebar(!wxGetApp().plater()->is_sidebar_collapsed());
    };

    if (!collapse_toolbar.add_item(item))
        return false;

    if (!collapse_toolbar.generate_icons_texture())
        return false;

    // Now "collapse" sidebar to current state. This is done so the tooltip
    // is updated before the toolbar is first used.
    if (wxGetApp().is_editor())
        wxGetApp().plater()->collapse_sidebar(wxGetApp().plater()->is_sidebar_collapsed());
    return true;
}

void Plater::priv::set_preview_layers_slider_values_range(int bottom, int top)
{
    preview->set_layers_slider_values_range(bottom, top);
}

void Plater::priv::update_preview_moves_slider(std::optional<int> visible_range_min, std::optional<int> visible_range_max)
{
    preview->update_moves_slider(visible_range_min, visible_range_max);
}

void Plater::priv::enable_preview_moves_slider(bool enable)
{
    preview->enable_moves_slider(enable);
}

void Plater::priv::reset_gcode_toolpaths()
{
    preview->get_canvas3d()->reset_gcode_toolpaths();
}

bool Plater::priv::can_set_instance_to_object() const
{
    const int obj_idx = get_selected_object_idx();
    return 0 <= obj_idx && obj_idx < (int)model.objects.size() && model.objects[obj_idx]->instances.size() > 1;
}

bool Plater::priv::can_split(bool to_objects) const
{
    return sidebar->obj_list()->is_splittable(to_objects);
}

bool Plater::priv::can_scale_to_print_volume() const
{
    const BuildVolume::Type type = this->bed.build_volume().type();
    return  !sidebar->obj_list()->has_selected_cut_object() &&
            !view3D->get_canvas3d()->get_selection().is_empty() && (type == BuildVolume::Type::Rectangle || type == BuildVolume::Type::Circle);
}

bool Plater::priv::layers_height_allowed() const
{
    if (printer_technology != ptFFF)
        return false;

    int obj_idx = get_selected_object_idx();
    return 0 <= obj_idx && obj_idx < (int)model.objects.size() && model.objects[obj_idx]->max_z() > SINKING_Z_THRESHOLD &&
        config->opt_bool("variable_layer_height") && view3D->is_layers_editing_allowed();
}

bool Plater::priv::can_mirror() const
{
    return !sidebar->obj_list()->has_selected_cut_object();
}


bool Plater::priv::can_replace_with_stl() const
{
    return !sidebar->obj_list()->has_selected_cut_object() && get_selection().get_volume_idxs().size() == 1;
}

bool Plater::priv::can_reload_from_disk() const
{
    if (sidebar->obj_list()->has_selected_cut_object())
        return false;

    // collect selected reloadable ModelVolumes
    std::vector<std::pair<int, int>> selected_volumes = reloadable_volumes(model, get_selection());
    // nothing to reload, return
    if (selected_volumes.empty())
        return false;

    std::sort(selected_volumes.begin(), selected_volumes.end(), [](const std::pair<int, int>& v1, const std::pair<int, int>& v2) {
        return (v1.first < v2.first) || (v1.first == v2.first && v1.second < v2.second);
        });
    selected_volumes.erase(std::unique(selected_volumes.begin(), selected_volumes.end(), [](const std::pair<int, int>& v1, const std::pair<int, int>& v2) {
        return (v1.first == v2.first) && (v1.second == v2.second); }), selected_volumes.end());

    // collects paths of files to load
    std::vector<fs::path> paths;
    for (auto [obj_idx, vol_idx] : selected_volumes) {
        paths.push_back(model.objects[obj_idx]->volumes[vol_idx]->source.input_file);
    }

    std::sort(paths.begin(), paths.end());
    paths.erase(std::unique(paths.begin(), paths.end()), paths.end());

    return !paths.empty();
}

void Plater::priv::set_bed_shape(const Pointfs& shape, const double max_print_height, const std::string& custom_texture, const std::string& custom_model, bool force_as_custom)
{
    bool new_shape = bed.set_shape(shape, max_print_height, custom_texture, custom_model, force_as_custom);
    if (new_shape) {
        if (view3D) view3D->bed_shape_changed();
        if (preview) preview->bed_shape_changed();
    }
}

bool Plater::priv::can_delete() const
{
    return !get_selection().is_empty() && !get_selection().is_wipe_tower() && !sidebar->obj_list()->is_editing();
}

bool Plater::priv::can_delete_all() const
{
    return !model.objects.empty() && !sidebar->obj_list()->is_editing();
}

bool Plater::priv::can_fix_through_winsdk() const
{
    std::vector<int> obj_idxs, vol_idxs;
    sidebar->obj_list()->get_selection_indexes(obj_idxs, vol_idxs);

#if FIX_THROUGH_WINSDK_ALWAYS
    // Fixing always.
    return ! obj_idxs.empty() || ! vol_idxs.empty();
#else // FIX_THROUGH_WINSDK_ALWAYS
    // Fixing only if the model is not manifold.
    if (vol_idxs.empty()) {
        for (auto obj_idx : obj_idxs)
            if (get_repaired_errors_count(model.objects[obj_idx]) > 0)
                return true;
        return false;
    }

    int obj_idx = obj_idxs.front();
    for (auto vol_idx : vol_idxs)
        if (get_repaired_errors_count(model.objects[obj_idx], vol_idx) > 0)
            return true;
    return false;
#endif // FIX_THROUGH_WINSDK_ALWAYS
}

bool Plater::priv::can_simplify() const
{
    const int obj_idx = get_selected_object_idx();
    // is object for simplification selected
    // cut object can't be simplify
    if (obj_idx < 0 || model.objects[obj_idx]->is_cut()) 
        return false;

    // is already opened?
    if (q->canvas3D()->get_gizmos_manager().get_current_type() ==
        GLGizmosManager::EType::Simplify)
        return false;
    return true;
}

bool Plater::priv::can_increase_instances() const
{
    if (!m_worker.is_idle()
     || q->canvas3D()->get_gizmos_manager().is_in_editing_mode())
            return false;

    // Disallow arrange and add instance when emboss gizmo is opend 
    // Prevent strobo effect during editing emboss parameters.
    if (q->canvas3D()->get_gizmos_manager().get_current_type() == GLGizmosManager::Emboss) return false;

    const auto obj_idxs = get_selection().get_object_idxs();
    return !obj_idxs.empty() && !get_selection().is_wipe_tower() && !sidebar->obj_list()->has_selected_cut_object();
}

bool Plater::priv::can_decrease_instances(int obj_idx /*= -1*/) const
{
    if (!m_worker.is_idle()
     || q->canvas3D()->get_gizmos_manager().is_in_editing_mode())
            return false;

    if (obj_idx < 0)
        obj_idx = get_selected_object_idx();

    if (obj_idx < 0) {
        if (const auto obj_ids = get_selection().get_object_idxs(); !obj_ids.empty())
            for (const size_t obj_id : obj_ids)
                if (can_decrease_instances(obj_id))
                    return true;
        return false;
    }

    return  obj_idx < (int)model.objects.size() && 
            (model.objects[obj_idx]->instances.size() > 1) &&
            !sidebar->obj_list()->has_selected_cut_object();
}

bool Plater::priv::can_split_to_objects() const
{
    return q->can_split(true);
}

bool Plater::priv::can_split_to_volumes() const
{
    return q->can_split(false);
}

bool Plater::priv::can_arrange() const
{
    if (model.objects.empty() || !m_worker.is_idle()) return false;
    return q->canvas3D()->get_gizmos_manager().get_current_type() == GLGizmosManager::Undefined;
}

bool Plater::priv::can_layers_editing() const
{
    return layers_height_allowed();
}

bool Plater::priv::can_show_upload_to_connect() const
{
    if (!user_account->is_logged()) {
        return false;
    }
    const Preset& selected_printer = wxGetApp().preset_bundle->printers.get_selected_preset();
    std::string vendor_id;
    if (selected_printer.vendor ) {
        vendor_id = selected_printer.vendor->id;
    } else if (std::string inherits = selected_printer.inherits(); !inherits.empty()) {
        const Preset* parent = wxGetApp().preset_bundle->printers.find_preset(inherits);
        if (parent && parent->vendor) {
            vendor_id = parent->vendor->id;
        }
    }    
    // Upload to Connect should show only for prusa printers
    // Some vendors might have prefixed name due to repository id.
    return vendor_id.find("Prusa") != std::string::npos;
} 

void Plater::priv::show_action_buttons(const bool ready_to_slice_) const
{
	// Cache this value, so that the callbacks from the RemovableDriveManager may repeat that value when calling show_action_buttons().
    this->ready_to_slice = ready_to_slice_;

    wxWindowUpdateLocker noUpdater(sidebar);

    DynamicPrintConfig* selected_printer_config = wxGetApp().preset_bundle->physical_printers.get_selected_printer_config();
    const auto print_host_opt = selected_printer_config ? selected_printer_config->option<ConfigOptionString>("print_host") : nullptr;
    const bool send_gcode_shown = print_host_opt != nullptr && !print_host_opt->value.empty();
    const bool connect_gcode_shown = print_host_opt == nullptr && can_show_upload_to_connect();
    // when a background processing is ON, export_btn and/or send_btn are showing
    if (get_config_bool("background_processing"))
    {
	    RemovableDriveManager::RemovableDrivesStatus removable_media_status = wxGetApp().removable_drive_manager()->status();
		if (sidebar->show_reslice(false) |
			sidebar->show_export(true) |
			sidebar->show_send(send_gcode_shown) |
            sidebar->show_connect(connect_gcode_shown) |
			sidebar->show_export_removable(removable_media_status.has_removable_drives))
            sidebar->Layout();
    }
    else
    {
	    RemovableDriveManager::RemovableDrivesStatus removable_media_status;
	    if (! ready_to_slice) 
	    	removable_media_status = wxGetApp().removable_drive_manager()->status();
        if (sidebar->show_reslice(ready_to_slice) |
            sidebar->show_export(!ready_to_slice) |
            sidebar->show_send(send_gcode_shown && !ready_to_slice) |
            sidebar->show_connect(connect_gcode_shown && !ready_to_slice) |
			sidebar->show_export_removable(!ready_to_slice && removable_media_status.has_removable_drives))
            sidebar->Layout();
    }
}

void Plater::priv::show_autoslicing_action_buttons() const {
    if (!s_multiple_beds.is_autoslicing()) {
        return;
    }

    DynamicPrintConfig* selected_printer_config = wxGetApp().preset_bundle->physical_printers.get_selected_printer_config();
    const auto print_host_opt = selected_printer_config ? selected_printer_config->option<ConfigOptionString>("print_host") : nullptr;
    const bool connect_gcode_shown = print_host_opt == nullptr && can_show_upload_to_connect();

    RemovableDriveManager::RemovableDrivesStatus removable_media_status = wxGetApp().removable_drive_manager()->status();

    bool updated{sidebar->show_export_all(true)};
    updated = sidebar->show_connect_all(connect_gcode_shown) || updated;
    updated = sidebar->show_export_removable_all(removable_media_status.has_removable_drives) || updated;
    if (updated) {
        sidebar->Layout();
    }

    bool all_finished{true};
    for (std::size_t bed_index{}; bed_index < s_multiple_beds.get_number_of_beds(); ++bed_index) {
        const std::unique_ptr<Print> &print{this->fff_prints[bed_index]};
        if (!print->finished() && is_sliceable(s_print_statuses[bed_index])) {
            all_finished = false;
            break;
        }
    }

    sidebar->enable_bulk_buttons(all_finished);
}

void Plater::priv::enter_gizmos_stack()
{
    assert(m_undo_redo_stack_active == &m_undo_redo_stack_main);
    if (m_undo_redo_stack_active == &m_undo_redo_stack_main) {
        m_undo_redo_stack_active = &m_undo_redo_stack_gizmos;
        assert(m_undo_redo_stack_active->empty());
        // Take the initial snapshot of the gizmos.
        // Not localized on purpose, the text will never be shown to the user.
        this->take_snapshot(std::string("Gizmos-Initial"));
    }
}

void Plater::priv::leave_gizmos_stack()
{
    assert(m_undo_redo_stack_active == &m_undo_redo_stack_gizmos);
    if (m_undo_redo_stack_active == &m_undo_redo_stack_gizmos) {
        assert(! m_undo_redo_stack_active->empty());
        m_undo_redo_stack_active->clear();
        m_undo_redo_stack_active = &m_undo_redo_stack_main;
    }
}

int Plater::priv::get_active_snapshot_index()
{
    const size_t active_snapshot_time = this->undo_redo_stack().active_snapshot_time();
    const std::vector<UndoRedo::Snapshot>& ss_stack = this->undo_redo_stack().snapshots();
    const auto it = std::lower_bound(ss_stack.begin(), ss_stack.end(), UndoRedo::Snapshot(active_snapshot_time));
    return it - ss_stack.begin();
}

void Plater::priv::take_snapshot(const std::string& snapshot_name, const UndoRedo::SnapshotType snapshot_type)
{
    if (m_prevent_snapshots > 0)
        return;
    assert(m_prevent_snapshots >= 0);
    UndoRedo::SnapshotData snapshot_data;
    snapshot_data.snapshot_type      = snapshot_type;
    snapshot_data.printer_technology = this->printer_technology;
    if (this->view3D->is_layers_editing_enabled())
        snapshot_data.flags |= UndoRedo::SnapshotData::VARIABLE_LAYER_EDITING_ACTIVE;
    if (this->sidebar->obj_list()->is_selected(itSettings)) {
        snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_SETTINGS_ON_SIDEBAR;
        snapshot_data.layer_range_idx = this->sidebar->obj_list()->get_selected_layers_range_idx();
    }
    else if (this->sidebar->obj_list()->is_selected(itLayer)) {
        snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_LAYER_ON_SIDEBAR;
        snapshot_data.layer_range_idx = this->sidebar->obj_list()->get_selected_layers_range_idx();
    }
    else if (this->sidebar->obj_list()->is_selected(itLayerRoot))
        snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_LAYERROOT_ON_SIDEBAR;

    // If SLA gizmo is active, ask it if it wants to trigger support generation
    // on loading this snapshot.
    if (view3D->get_canvas3d()->get_gizmos_manager().wants_reslice_supports_on_undo())
        snapshot_data.flags |= UndoRedo::SnapshotData::RECALCULATE_SLA_SUPPORTS;

    const GLGizmosManager& gizmos = view3D->get_canvas3d()->get_gizmos_manager();

    if (snapshot_type == UndoRedo::SnapshotType::ProjectSeparator && get_config_bool("clear_undo_redo_stack_on_new_project"))
        this->undo_redo_stack().clear();
    this->undo_redo_stack().take_snapshot(snapshot_name, model, view3D->get_canvas3d()->get_selection(), gizmos, snapshot_data);
    if (snapshot_type == UndoRedo::SnapshotType::LeavingGizmoWithAction) {
        // Filter all but the last UndoRedo::SnapshotType::GizmoAction in a row between the last UndoRedo::SnapshotType::EnteringGizmo and UndoRedo::SnapshotType::LeavingGizmoWithAction.
        // The remaining snapshot will be renamed to a more generic name,
        // depending on what gizmo is being left.
        assert(gizmos.get_current() != nullptr);
        std::string new_name = gizmos.get_current()->get_action_snapshot_name();
        this->undo_redo_stack().reduce_noisy_snapshots(new_name);
    } else if (snapshot_type == UndoRedo::SnapshotType::ProjectSeparator) {
        // Reset the "dirty project" flag.
        m_undo_redo_stack_main.mark_current_as_saved();
    }
    this->undo_redo_stack().release_least_recently_used();

    dirty_state.update_from_undo_redo_stack(m_undo_redo_stack_main.project_modified());

    // Save the last active preset name of a particular printer technology.
    ((this->printer_technology == ptFFF) ? m_last_fff_printer_profile_name : m_last_sla_printer_profile_name) = wxGetApp().preset_bundle->printers.get_selected_preset_name();
    BOOST_LOG_TRIVIAL(info) << "Undo / Redo snapshot taken: " << snapshot_name << ", Undo / Redo stack memory: " << Slic3r::format_memsize_MB(this->undo_redo_stack().memsize()) << log_memory_info();
}

void Plater::priv::undo()
{
    const std::vector<UndoRedo::Snapshot> &snapshots = this->undo_redo_stack().snapshots();
    auto it_current = std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(this->undo_redo_stack().active_snapshot_time()));
    if (-- it_current != snapshots.begin())
        this->undo_redo_to(it_current);
}

void Plater::priv::redo()
{
    const std::vector<UndoRedo::Snapshot> &snapshots = this->undo_redo_stack().snapshots();
    auto it_current = std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(this->undo_redo_stack().active_snapshot_time()));
    if (++ it_current != snapshots.end())
        this->undo_redo_to(it_current);
}

void Plater::priv::undo_redo_to(size_t time_to_load)
{
    const std::vector<UndoRedo::Snapshot> &snapshots = this->undo_redo_stack().snapshots();
    auto it_current = std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(time_to_load));
    assert(it_current != snapshots.end());
    this->undo_redo_to(it_current);
}

void Plater::priv::undo_redo_to(std::vector<UndoRedo::Snapshot>::const_iterator it_snapshot)
{
    // Make sure that no updating function calls take_snapshot until we are done.
    SuppressSnapshots snapshot_supressor(q);

    bool 				temp_snapshot_was_taken 	= this->undo_redo_stack().temp_snapshot_active();
    PrinterTechnology 	new_printer_technology 		= it_snapshot->snapshot_data.printer_technology;
    bool 				printer_technology_changed 	= this->printer_technology != new_printer_technology;
    if (printer_technology_changed) {
        // Switching the printer technology when jumping forwards / backwards in time. Switch to the last active printer profile of the other type.
        std::string s_pt = (it_snapshot->snapshot_data.printer_technology == ptFFF) ? "FFF" : "SLA";
        if (!wxGetApp().check_and_save_current_preset_changes(_L("Undo / Redo is processing"), 
//            format_wxstr(_L("%1% printer was active at the time the target Undo / Redo snapshot was taken. Switching to %1% printer requires reloading of %1% presets."), s_pt)))
            format_wxstr(_L("Switching the printer technology from %1% to %2%.\n"
                            "Some %1% presets were modified, which will be lost after switching the printer technology."), s_pt =="FFF" ? "SLA" : "FFF", s_pt), false))
            // Don't switch the profiles.
            return;
    }
    // Save the last active preset name of a particular printer technology.
    ((this->printer_technology == ptFFF) ? m_last_fff_printer_profile_name : m_last_sla_printer_profile_name) = wxGetApp().preset_bundle->printers.get_selected_preset_name();
    const int layer_range_idx = it_snapshot->snapshot_data.layer_range_idx;
    // Flags made of Snapshot::Flags enum values.
    unsigned int new_flags = it_snapshot->snapshot_data.flags;
    UndoRedo::SnapshotData top_snapshot_data;
    top_snapshot_data.printer_technology = this->printer_technology;
    if (this->view3D->is_layers_editing_enabled())
        top_snapshot_data.flags |= UndoRedo::SnapshotData::VARIABLE_LAYER_EDITING_ACTIVE;
    if (this->sidebar->obj_list()->is_selected(itSettings)) {
        top_snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_SETTINGS_ON_SIDEBAR;
        top_snapshot_data.layer_range_idx = this->sidebar->obj_list()->get_selected_layers_range_idx();
    }
    else if (this->sidebar->obj_list()->is_selected(itLayer)) {
        top_snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_LAYER_ON_SIDEBAR;
        top_snapshot_data.layer_range_idx = this->sidebar->obj_list()->get_selected_layers_range_idx();
    }
    else if (this->sidebar->obj_list()->is_selected(itLayerRoot))
        top_snapshot_data.flags |= UndoRedo::SnapshotData::SELECTED_LAYERROOT_ON_SIDEBAR;
    bool   		 new_variable_layer_editing_active = (new_flags & UndoRedo::SnapshotData::VARIABLE_LAYER_EDITING_ACTIVE) != 0;
    bool         new_selected_settings_on_sidebar  = (new_flags & UndoRedo::SnapshotData::SELECTED_SETTINGS_ON_SIDEBAR) != 0;
    bool         new_selected_layer_on_sidebar     = (new_flags & UndoRedo::SnapshotData::SELECTED_LAYER_ON_SIDEBAR) != 0;
    bool         new_selected_layerroot_on_sidebar = (new_flags & UndoRedo::SnapshotData::SELECTED_LAYERROOT_ON_SIDEBAR) != 0;

    if (this->view3D->get_canvas3d()->get_gizmos_manager().wants_reslice_supports_on_undo())
        top_snapshot_data.flags |= UndoRedo::SnapshotData::RECALCULATE_SLA_SUPPORTS;

    // Disable layer editing before the Undo / Redo jump.
    if (!new_variable_layer_editing_active && view3D->is_layers_editing_enabled())
        view3D->get_canvas3d()->force_main_toolbar_left_action(view3D->get_canvas3d()->get_main_toolbar_item_id("layersediting"));

    // Make a copy of the snapshot, undo/redo could invalidate the iterator
    const UndoRedo::Snapshot snapshot_copy = *it_snapshot;
    // Do the jump in time.
    if (it_snapshot->timestamp < this->undo_redo_stack().active_snapshot_time() ?
        this->undo_redo_stack().undo(model, this->view3D->get_canvas3d()->get_selection(), this->view3D->get_canvas3d()->get_gizmos_manager(), top_snapshot_data, it_snapshot->timestamp) :
        this->undo_redo_stack().redo(model, this->view3D->get_canvas3d()->get_gizmos_manager(), it_snapshot->timestamp)) {
        if (printer_technology_changed) {
            // Switch to the other printer technology. Switch to the last printer active for that particular technology.
            AppConfig *app_config = wxGetApp().app_config;
            app_config->set("presets", "printer", (new_printer_technology == ptFFF) ? m_last_fff_printer_profile_name : m_last_sla_printer_profile_name);
            //FIXME Why are we reloading the whole preset bundle here? Please document. This is fishy and it is unnecessarily expensive.
            // Anyways, don't report any config value substitutions, they have been already reported to the user at application start up.
            wxGetApp().preset_bundle->load_presets(*app_config, ForwardCompatibilitySubstitutionRule::EnableSilent);
			// load_current_presets() calls Tab::load_current_preset() -> TabPrint::update() -> Object_list::update_and_show_object_settings_item(),
			// but the Object list still keeps pointer to the old Model. Avoid a crash by removing selection first.
			this->sidebar->obj_list()->unselect_objects();
            // Load the currently selected preset into the GUI, update the preset selection box.
            // This also switches the printer technology based on the printer technology of the active printer profile.
            wxGetApp().load_current_presets();
        }
        // set selection mode for ObjectList on sidebar
        this->sidebar->obj_list()->set_selection_mode(new_selected_settings_on_sidebar  ? ObjectList::SELECTION_MODE::smSettings :
                                                      new_selected_layer_on_sidebar     ? ObjectList::SELECTION_MODE::smLayer :
                                                      new_selected_layerroot_on_sidebar ? ObjectList::SELECTION_MODE::smLayerRoot :
                                                                                          ObjectList::SELECTION_MODE::smUndef);
        if (new_selected_settings_on_sidebar || new_selected_layer_on_sidebar)
            this->sidebar->obj_list()->set_selected_layers_range_idx(layer_range_idx);

        this->update_after_undo_redo(snapshot_copy, temp_snapshot_was_taken);
        // Enable layer editing after the Undo / Redo jump.
        if (! view3D->is_layers_editing_enabled() && this->layers_height_allowed() && new_variable_layer_editing_active)
            view3D->get_canvas3d()->force_main_toolbar_left_action(view3D->get_canvas3d()->get_main_toolbar_item_id("layersediting"));
    }

    dirty_state.update_from_undo_redo_stack(m_undo_redo_stack_main.project_modified());
}

void Plater::priv::update_after_undo_redo(const UndoRedo::Snapshot& snapshot, bool /* temp_snapshot_was_taken */)
{
    this->view3D->get_canvas3d()->get_selection().clear();
    // Update volumes from the deserializd model, always stop / update the background processing (for both the SLA and FFF technologies).
    this->update((unsigned int)UpdateParams::FORCE_BACKGROUND_PROCESSING_UPDATE | (unsigned int)UpdateParams::POSTPONE_VALIDATION_ERROR_MESSAGE);
    // Release old snapshots if the memory allocated is excessive. This may remove the top most snapshot if jumping to the very first snapshot.
    //if (temp_snapshot_was_taken)
    // Release the old snapshots always, as it may have happened, that some of the triangle meshes got deserialized from the snapshot, while some
    // triangle meshes may have gotten released from the scene or the background processing, therefore now being calculated into the Undo / Redo stack size.
        this->undo_redo_stack().release_least_recently_used();
    //YS_FIXME update obj_list from the deserialized model (maybe store ObjectIDs into the tree?) (no selections at this point of time)
    this->view3D->get_canvas3d()->get_selection().set_deserialized(GUI::Selection::EMode(this->undo_redo_stack().selection_deserialized().mode), this->undo_redo_stack().selection_deserialized().volumes_and_instances);
    this->view3D->get_canvas3d()->get_gizmos_manager().update_after_undo_redo(snapshot);

    s_multiple_beds.update_shown_beds(model, q->build_volume(), false);
    wxGetApp().obj_list()->update_after_undo_redo();

    if (wxGetApp().get_mode() == comSimple && model_has_advanced_features(this->model)) {
        // If the user jumped to a snapshot that require user interface with advanced features, switch to the advanced mode without asking.
        // There is a little risk of surprising the user, as he already must have had the advanced or expert mode active for such a snapshot to be taken.
        if (wxGetApp().save_mode(comAdvanced))
            view3D->set_as_dirty();
    }

	// this->update() above was called with POSTPONE_VALIDATION_ERROR_MESSAGE, so that if an error message was generated when updating the back end, it would not open immediately, 
	// but it would be saved to be show later. Let's do it now. We do not want to display the message box earlier, because on Windows & OSX the message box takes over the message
	// queue pump, which in turn executes the rendering function before a full update after the Undo / Redo jump.
	this->show_delayed_error_message();

    //FIXME what about the state of the manipulators?
    //FIXME what about the focus? Cursor in the side panel?

    BOOST_LOG_TRIVIAL(info) << "Undo / Redo snapshot reloaded. Undo / Redo stack memory: " << Slic3r::format_memsize_MB(this->undo_redo_stack().memsize()) << log_memory_info();
}

void Plater::priv::bring_instance_forward() const
{
#ifdef __APPLE__
    wxGetApp().other_instance_message_handler()->bring_instance_forward();
    return;
#endif //__APPLE__
    if (main_frame == nullptr) {
        BOOST_LOG_TRIVIAL(debug) << "Couldnt bring instance forward - mainframe is null";
        return;
    }
    BOOST_LOG_TRIVIAL(debug) << "prusaslicer window going forward";
    //this code maximize app window on Fedora
    {
        main_frame->Iconize(false);
        if (main_frame->IsMaximized())
            main_frame->Maximize(true);
        else
            main_frame->Maximize(false);
    }
    //this code maximize window on Ubuntu
    {
        main_frame->Restore();
        wxGetApp().GetTopWindow()->SetFocus();  // focus on my window
        wxGetApp().GetTopWindow()->Raise();  // bring window to front
        wxGetApp().GetTopWindow()->Show(true); // show the window
    }
}

// Plater / Public

Plater::Plater(wxWindow *parent, MainFrame *main_frame)
    : wxPanel(parent, wxID_ANY, wxDefaultPosition, wxGetApp().get_min_size(parent))
{
    // Creation and initialization is separated, the initialization needs
    // Plater::p pointer already set up.
    p = std::make_unique<priv>(this, main_frame);
    p->init();
}

Plater::~Plater() = default;

bool Plater::is_project_dirty() const { return p->is_project_dirty(); }
bool Plater::is_presets_dirty() const { return p->is_presets_dirty(); }
void Plater::update_project_dirty_from_presets() { p->update_project_dirty_from_presets(); }
int  Plater::save_project_if_dirty(const wxString& reason) { return p->save_project_if_dirty(reason); }
void Plater::reset_project_dirty_after_save() { p->reset_project_dirty_after_save(); }
void Plater::reset_project_dirty_initial_presets() { p->reset_project_dirty_initial_presets(); }
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
void Plater::render_project_state_debug_window() const { p->render_project_state_debug_window(); }
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW

Sidebar&        Plater::sidebar()           { return *p->sidebar; }
const Model&    Plater::model() const       { return p->model; }
Model&          Plater::model()             { return p->model; }

bool Plater::is_project_temp() const
{
    return false;
}

void Plater::new_project()
{
    if (int saved_project = p->save_project_if_dirty(_L("Creating a new project while the current project is modified.")); saved_project == wxID_CANCEL)
        return;
    else {
        wxString header = _L("Creating a new project while some presets are modified.") + "\n" + 
                          (saved_project == wxID_YES ? _L("You can keep presets modifications to the new project or discard them") :
                          _L("You can keep presets modifications to the new project, discard them or save changes as new presets.\n"
                             "Note, if changes will be saved then new project wouldn't keep them"));
        int act_buttons = ActionButtons::KEEP;
        if (saved_project == wxID_NO)
            act_buttons |= ActionButtons::SAVE;
        if (!wxGetApp().check_and_keep_current_preset_changes(_L("Creating a new project"), header, act_buttons))
            return;
    }

    p->select_view_3D("3D");
    take_snapshot(_L("New Project"), UndoRedo::SnapshotType::ProjectSeparator);
    Plater::SuppressSnapshots suppress(this);
    reset();
    // Save the names of active presets and project specific config into ProjectDirtyStateManager.
    reset_project_dirty_initial_presets();
    // Make a copy of the active presets for detecting changes in preset values.
    wxGetApp().update_saved_preset_from_current_preset();
    // Update Project dirty state, update application title bar.
    update_project_dirty_from_presets();
}

void Plater::load_project()
{
    if (!wxGetApp().can_load_project())
        return;

    // Ask user for a project file name.
    wxString input_file;
    wxGetApp().load_project(this, input_file);
    // And finally load the new project.
    load_project(input_file);
}

void Plater::load_project(const wxString& filename)
{
    if (filename.empty())
        return;

    // Take the Undo / Redo snapshot.
    Plater::TakeSnapshot snapshot(this, _L("Load Project") + ": " + wxString::FromUTF8(into_path(filename).stem().string().c_str()), UndoRedo::SnapshotType::ProjectSeparator);

    p->reset();

    s_multiple_beds.set_loading_project_flag(true);
    ScopeGuard guard([](){ s_multiple_beds.set_loading_project_flag(false);});

    const std::vector<fs::path>& input_paths = { into_path(filename) };
    if (! load_files(input_paths).empty()) {
        // At least one file was loaded.
        p->set_project_filename(filename);
        // Save the names of active presets and project specific config into ProjectDirtyStateManager.
        reset_project_dirty_initial_presets();
        // Make a copy of the active presets for detecting changes in preset values.
        wxGetApp().update_saved_preset_from_current_preset();
        // Update Project dirty state, update application title bar.
        update_project_dirty_from_presets();
    }
}

void Plater::add_model(bool imperial_units/* = false*/)
{
    wxArrayString input_files;
    wxGetApp().import_model(this, input_files);
    if (input_files.empty())
        return;

    std::vector<fs::path> paths;
    for (const auto &file : input_files)
        paths.emplace_back(into_path(file));

    wxString snapshot_label;
    assert(! paths.empty());
    if (paths.size() == 1) {
        snapshot_label = _L("Import Object");
        snapshot_label += ": ";
        snapshot_label += wxString::FromUTF8(paths.front().filename().string().c_str());
    } else {
        snapshot_label = _L("Import Objects");
        snapshot_label += ": ";
        snapshot_label += wxString::FromUTF8(paths.front().filename().string().c_str());
        for (size_t i = 1; i < paths.size(); ++ i) {
            snapshot_label += ", ";
            snapshot_label += wxString::FromUTF8(paths[i].filename().string().c_str());
        }
    }

    Plater::TakeSnapshot snapshot(this, snapshot_label);
    if (! load_files(paths, true, false, imperial_units).empty())
        wxGetApp().mainframe->update_title();
}

void Plater::import_zip_archive()
{
   wxString input_file;
   wxGetApp().import_zip(this, input_file);
   if (input_file.empty())
       return;

   wxArrayString arr;
   arr.Add(input_file);
   load_files(arr, false);
}

void Plater::import_sl1_archive()
{
    auto &w = get_ui_job_worker();
    if (w.is_idle() && p->m_sla_import_dlg->ShowModal() == wxID_OK) {
        p->take_snapshot(_L("Import SLA archive"));
        replace_job(w, std::make_unique<SLAImportJob>(p->m_sla_import_dlg));
    }
}

void Plater::extract_config_from_project()
{
    wxString input_file;
    wxGetApp().load_project(this, input_file);

    if (! input_file.empty())
        load_files({ into_path(input_file) }, false, true);
}

void Plater::load_gcode()
{
    // Ask user for a gcode file name.
    wxString input_file;
    wxGetApp().load_gcode(this, input_file);
    // And finally load the gcode file.
    load_gcode(input_file);
}

void Plater::load_gcode(const wxString& filename)
{
    if (! is_gcode_file(into_u8(filename)) || m_last_loaded_gcode == filename)
        return;

    m_last_loaded_gcode = filename;

    // cleanup view before to start loading/processing
    std::for_each(p->gcode_results.begin(), p->gcode_results.end(), [](auto& g) { g.reset(); });
    reset_gcode_toolpaths();
    p->preview->reload_print();
    p->get_current_canvas3D()->render();

    wxBusyCursor wait;

    // process gcode
    GCodeProcessor processor;
    try
    {
        p->notification_manager->push_download_progress_notification("Loading...", []() { return false; });
        processor.process_file(filename.ToUTF8().data(), [this](float value) {
            p->notification_manager->set_download_progress_percentage(value);
            static auto clock = std::chrono::steady_clock();
            static auto old_t = clock.now();
            auto t = clock.now();
            if (std::chrono::duration_cast<std::chrono::milliseconds>(t - old_t).count() > 200) {
                p->get_current_canvas3D()->render();
                old_t = t;
            }
        });
    }
    catch (const std::exception& ex)
    {
        show_error(this, ex.what());
        return;
    }
    p->gcode_results.front() = std::move(processor.extract_result());

    // show results
    try
    {
        p->preview->reload_print();
    }
    catch (const std::exception&)
    {
        wxEndBusyCursor();
        p->gcode_results.front().reset();
        reset_gcode_toolpaths();
        set_default_bed_shape();
        p->preview->reload_print();
        p->get_current_canvas3D()->render();
        MessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
            wxString(GCODEVIEWER_APP_NAME) + " - " + _L("Error while loading .gcode file"), wxOK | wxICON_WARNING | wxCENTRE).ShowModal();
        set_project_filename(wxEmptyString);
        return;
    }
    p->preview->get_canvas3d()->zoom_to_gcode();

    if (p->preview->get_canvas3d()->get_gcode_layers_zs().empty()) {
        wxEndBusyCursor();
        //wxMessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
        MessageDialog(this, _L("The selected file") + ":\n" + filename + "\n" + _L("does not contain valid gcode."),
            wxString(GCODEVIEWER_APP_NAME) + " - " + _L("Error while loading .gcode file"), wxOK | wxICON_WARNING | wxCENTRE).ShowModal();
        set_project_filename(wxEmptyString);
    }
    else
        set_project_filename(filename);
}

void Plater::reload_gcode_from_disk()
{
    wxString filename(m_last_loaded_gcode);
    m_last_loaded_gcode.clear();
    load_gcode(filename);
}

static std::string rename_file(const std::string& filename, const std::string& extension)
{
    const boost::filesystem::path src_path(filename);
    std::string src_stem = src_path.stem().string();
    int value = 0;
    if (src_stem.back() == ')') {
        const size_t pos = src_stem.find_last_of('(');
        if (pos != std::string::npos) {
            const std::string value_str = src_stem.substr(pos + 1, src_stem.length() - pos);
            try
            {
                value = std::stoi(value_str);
                src_stem = src_stem.substr(0, pos);
            }
            catch (...)
            {
                // do nothing
            }
        }
    }

    boost::filesystem::path dst_path(filename);
    dst_path.remove_filename();
    dst_path /= src_stem + "(" + std::to_string(value + 1) + ")" + extension;
    return dst_path.string();
}

void Plater::convert_gcode_to_ascii()
{
    // Ask user for a gcode file name.
    wxString input_file;
    wxGetApp().load_gcode(this, input_file);
    if (input_file.empty())
        return;

    // Open source file
    FilePtr in_file{ boost::nowide::fopen(into_u8(input_file).c_str(), "rb") };
    if (in_file.f == nullptr) {
        MessageDialog msg_dlg(this, _L("Unable to open the selected file."), _L("Error"), wxICON_ERROR | wxOK);
        msg_dlg.ShowModal();
        return;
    }

    // Set out filename
    const boost::filesystem::path input_path(into_u8(input_file));
    boost::filesystem::path output_path(into_u8(input_file));
    std::string output_file = output_path.replace_extension("gcode").string();

    if (input_file == output_file) {
        using namespace bgcode::core;
        EResult res = is_valid_binary_gcode(*in_file.f);
        if (res == EResult::InvalidMagicNumber) {
            MessageDialog msg_dlg(this, _L("The selected file is already in ASCII format."), _L("Warning"), wxOK);
            msg_dlg.ShowModal();
            return;
        }
        else {
            output_file = rename_file(output_file, ".gcode");
            wxString msg = GUI::format_wxstr("The converted binary G-code file has '.gcode' extension.\n"
                "The exported file will be renamed to:\n\n%1%\n\nDo you want to continue?", output_file);
            MessageDialog msg_dlg(this, msg, _L("Warning"), wxYES_NO);
            if (msg_dlg.ShowModal() != wxID_YES)
                return;
        }
    }

    const bool exists = boost::filesystem::exists(output_file);
    if (exists) {
        MessageDialog msg_dlg(this, GUI::format_wxstr(_L("File %1% already exists. Do you wish to overwrite it?"), output_file), _L("Notice"), wxYES_NO);
        if (msg_dlg.ShowModal() != wxID_YES)
            return;
    }

    // Open destination file
    FilePtr out_file{ boost::nowide::fopen(output_file.c_str(), "wb") };
    if (out_file.f == nullptr) {
        MessageDialog msg_dlg(this, _L("Unable to open output file."), _L("Error"), wxICON_ERROR | wxOK);
        msg_dlg.ShowModal();
        return;
    }

    // Perform conversion
    {
        wxBusyCursor busy;
        using namespace bgcode::core;
        EResult res = bgcode::convert::from_binary_to_ascii(*in_file.f, *out_file.f, true);
        if (res == EResult::InvalidMagicNumber) {
            in_file.close();
            out_file.close();
            boost::filesystem::copy_file(input_path, output_path, boost::filesystem::copy_options::overwrite_existing);
        }
        else if (res != EResult::Success) {
            MessageDialog msg_dlg(this, _L(std::string(translate_result(res))), _L("Error converting G-code file"), wxICON_INFORMATION | wxOK);
            msg_dlg.ShowModal();
            out_file.close();
            boost::nowide::remove(output_file.c_str());
            return;
        }
    }

    MessageDialog msg_dlg(this, Slic3r::GUI::format_wxstr("%1%\n%2%", _L("Successfully created G-code ASCII file"), output_file),
                          _L("Convert G-code file to ASCII format"), wxICON_ERROR | wxOK);
    msg_dlg.ShowModal();
}

void Plater::convert_gcode_to_binary()
{
    // Ask user for a gcode file name.
    wxString input_file;
    wxGetApp().load_gcode(this, input_file);
    if (input_file.empty())
        return;

    // Open source file
    FilePtr in_file{ boost::nowide::fopen(into_u8(input_file).c_str(), "rb") };
    if (in_file.f == nullptr) {
        MessageDialog msg_dlg(this, _L("Unable to open the selected file."), _L("Error"), wxICON_ERROR | wxOK);
        msg_dlg.ShowModal();
        return;
    }

    // Set out filename
    const boost::filesystem::path input_path(into_u8(input_file));
    boost::filesystem::path output_path(into_u8(input_file));
    std::string output_file = output_path.replace_extension("bgcode").string();

    if (input_file == output_file) {
        using namespace bgcode::core;
        EResult res = is_valid_binary_gcode(*in_file.f);
        if (res == EResult::Success) {
            MessageDialog msg_dlg(this, _L("The selected file is already in binary format."), _L("Warning"), wxOK);
            msg_dlg.ShowModal();
            return;
        }
        else {
            output_file = rename_file(output_file, ".bgcode");
            wxString msg = GUI::format_wxstr("The converted ASCII G-code file has '.bgcode' extension.\n"
                "The exported file will be renamed to:\n\n%1%\n\nDo you want to continue?", output_file);
            MessageDialog msg_dlg(this, msg, _L("Warning"), wxYES_NO);
            if (msg_dlg.ShowModal() != wxID_YES)
                return;
        }
    }

    const bool exists = boost::filesystem::exists(output_file);
    if (exists) {
        MessageDialog msg_dlg(this, GUI::format_wxstr(_L("File %1% already exists. Do you wish to overwrite it?"), output_file), _L("Notice"), wxYES_NO);
        if (msg_dlg.ShowModal() != wxID_YES)
            return;
    }

    // Open destination file
    FilePtr out_file{ boost::nowide::fopen(output_file.c_str(), "wb") };
    if (out_file.f == nullptr) {
        MessageDialog msg_dlg(this, _L("Unable to open output file."), _L("Error"), wxICON_ERROR | wxOK);
        msg_dlg.ShowModal();
        return;
    }

    // Perform conversion
    {
        wxBusyCursor busy;
        using namespace bgcode::core;
        const bgcode::binarize::BinarizerConfig& binarizer_config = GCodeProcessor::get_binarizer_config();
        const EResult res = bgcode::convert::from_ascii_to_binary(*in_file.f, *out_file.f, binarizer_config);
        if (res == EResult::AlreadyBinarized) {
            in_file.close();
            out_file.close();
            boost::filesystem::copy_file(input_path, output_path, boost::filesystem::copy_options::overwrite_existing);
        }
        else if (res != EResult::Success) {
            MessageDialog msg_dlg(this, _L(std::string(translate_result(res))), _L("Error converting G-code file"), wxICON_INFORMATION | wxOK);
            msg_dlg.ShowModal();
            out_file.close();
            boost::nowide::remove(output_file.c_str());
            return;
        }
    }

    MessageDialog msg_dlg(this, Slic3r::GUI::format_wxstr("%1%\n%2%", _L("Successfully created G-code binary file"), output_file),
                         _L("Convert G-code file to binary format"), wxICON_ERROR | wxOK);
    msg_dlg.ShowModal();
}

void Plater::reload_print()
{
    p->preview->reload_print();
}

void Plater::object_list_changed()
{
    p->object_list_changed();
}

std::vector<size_t> Plater::load_files(const std::vector<fs::path>& input_files, bool load_model, bool load_config, bool imperial_units /*= false*/) { return p->load_files(input_files, load_model, load_config, imperial_units); }

// To be called when providing a list of files to the GUI slic3r on command line.
std::vector<size_t> Plater::load_files(const std::vector<std::string>& input_files, bool load_model, bool load_config, bool imperial_units /*= false*/)
{
    std::vector<fs::path> paths;
    paths.reserve(input_files.size());
    for (const std::string& path : input_files)
        paths.emplace_back(path);
    return p->load_files(paths, load_model, load_config, imperial_units);
}


class LoadProjectsDialog : public DPIDialog
{
    int m_action{ 0 };
    bool m_all { false };
    wxComboBox* m_combo_project { nullptr };
    wxComboBox* m_combo_config { nullptr };
public:
    enum class LoadProjectOption : unsigned char
    {
        Unknown,
        AllGeometry,
        AllNewWindow,
        OneProject,
        OneConfig
    };

    LoadProjectsDialog(const std::vector<fs::path>& paths);

    int get_action() const { return m_action + 1; }
    bool get_all() const { return m_all; }
    int get_selected() const 
    { 
        if (m_combo_project && m_combo_project->IsEnabled()) 
            return m_combo_project->GetSelection(); 
        else if (m_combo_config && m_combo_config->IsEnabled()) 
            return m_combo_config->GetSelection(); 
        else 
            return -1;
    }
protected:
    void on_dpi_changed(const wxRect& suggested_rect) override;
};

LoadProjectsDialog::LoadProjectsDialog(const std::vector<fs::path>& paths)
    : DPIDialog(static_cast<wxWindow*>(wxGetApp().mainframe), wxID_ANY,
        format_wxstr(_L("%1% - Multiple projects file"), SLIC3R_APP_NAME), wxDefaultPosition,
        wxDefaultSize, wxDEFAULT_DIALOG_STYLE)
{
    SetFont(wxGetApp().normal_font());

    wxBoxSizer* main_sizer = new wxBoxSizer(wxVERTICAL);
    bool contains_projects = !paths.empty();
    bool instances_allowed = !wxGetApp().app_config->get_bool("single_instance");
    if (contains_projects)
        main_sizer->Add(new wxStaticText(this, wxID_ANY,
            get_wraped_wxString(_L("There are several files being loaded, including Project files.") + "\n" + _L("Select an action to apply to all files."))), 0, wxEXPAND | wxALL, 10);
    else 
        main_sizer->Add(new wxStaticText(this, wxID_ANY,
            get_wraped_wxString(_L("There are several files being loaded.") + "\n" + _L("Select an action to apply to all files."))), 0, wxEXPAND | wxALL, 10);

    wxStaticBox* action_stb = new wxStaticBox(this, wxID_ANY, _L("Action"));
    if (!wxOSX) action_stb->SetBackgroundStyle(wxBG_STYLE_PAINT);
    action_stb->SetFont(wxGetApp().normal_font());
    
    if (contains_projects) {
        wxArrayString filenames;
        for (const fs::path& path : paths) {
            filenames.push_back(from_u8(path.filename().string()));
        }
        m_combo_project = new wxComboBox(this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, filenames, wxCB_READONLY);
        m_combo_project->SetValue(filenames.front());
        m_combo_project->Enable(false);
       
        m_combo_config = new wxComboBox(this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, filenames, wxCB_READONLY);
        m_combo_config->SetValue(filenames.front());
        m_combo_config->Enable(false);
    }
    wxStaticBoxSizer* stb_sizer = new wxStaticBoxSizer(action_stb, wxVERTICAL);
    int id = 0;
  
    // all geometry
    wxRadioButton* btn = new wxRadioButton(this, wxID_ANY, _L("Import 3D models"), wxDefaultPosition, wxDefaultSize, id == 0 ? wxRB_GROUP : 0);
    btn->SetValue(id == m_action);
    btn->Bind(wxEVT_RADIOBUTTON, [this, id, contains_projects](wxCommandEvent&) {
        m_action = id;
        if (contains_projects) {
            m_combo_project->Enable(false);
            m_combo_config->Enable(false);
        }
        });
    stb_sizer->Add(btn, 0, wxEXPAND | wxTOP, 5);
    id++;
    // all new window
    if (instances_allowed) {
        btn = new wxRadioButton(this, wxID_ANY, _L("Start a new instance of PrusaSlicer"), wxDefaultPosition, wxDefaultSize, id == 0 ? wxRB_GROUP : 0);
        btn->SetValue(id == m_action);
        btn->Bind(wxEVT_RADIOBUTTON, [this, id, contains_projects](wxCommandEvent&) {
            m_action = id;
            if (contains_projects) {
                m_combo_project->Enable(false);
                m_combo_config->Enable(false);
            }
            });
        stb_sizer->Add(btn, 0, wxEXPAND | wxTOP, 5);
    }
    id++; // IMPORTANT TO ALWAYS UP THE ID EVEN IF OPTION IS NOT ADDED!
    if (contains_projects) {
        // one project
        btn = new wxRadioButton(this, wxID_ANY, _L("Select one to load as project"), wxDefaultPosition, wxDefaultSize, id == 0 ? wxRB_GROUP : 0);
        btn->SetValue(false);
        btn->Bind(wxEVT_RADIOBUTTON, [this, id](wxCommandEvent&) {
            m_action = id;
            m_combo_project->Enable(true);
            m_combo_config->Enable(false);
        });
        stb_sizer->Add(btn, 0, wxEXPAND | wxTOP, 5);
        stb_sizer->Add(m_combo_project, 0, wxEXPAND | wxTOP, 5);
        // one config
        id++;
        btn = new wxRadioButton(this, wxID_ANY, _L("Select only one file to load the configuration."), wxDefaultPosition, wxDefaultSize, id == 0 ? wxRB_GROUP : 0);
        btn->SetValue(id == m_action);
        btn->Bind(wxEVT_RADIOBUTTON, [this, id, instances_allowed](wxCommandEvent&) {
            m_action = id;
            if (instances_allowed)
                m_combo_project->Enable(false);
            m_combo_config->Enable(true);
            });
        stb_sizer->Add(btn, 0, wxEXPAND | wxTOP, 5);
        stb_sizer->Add(m_combo_config, 0, wxEXPAND | wxTOP, 5);
    }


    main_sizer->Add(stb_sizer, 1, wxEXPAND | wxRIGHT | wxLEFT, 10);
    wxBoxSizer* bottom_sizer = new wxBoxSizer(wxHORIZONTAL);
    bottom_sizer->Add(CreateStdDialogButtonSizer(wxOK | wxCANCEL), 0, wxEXPAND | wxLEFT, 5);
    main_sizer->Add(bottom_sizer, 0, wxEXPAND | wxALL, 10);
    SetSizer(main_sizer);
    main_sizer->SetSizeHints(this);

    // Update DarkUi just for buttons
    wxGetApp().UpdateDlgDarkUI(this, true);
}

void LoadProjectsDialog::on_dpi_changed(const wxRect& suggested_rect)
{
    const int em = em_unit();
    SetMinSize(wxSize(65 * em, 30 * em));
    Fit();
    Refresh();
}




bool Plater::preview_zip_archive(const boost::filesystem::path& archive_path)
{
    //std::vector<fs::path> unzipped_paths;
    std::vector<fs::path> non_project_paths;
    std::vector<fs::path> project_paths;
    try
    {
        mz_zip_archive archive;
        mz_zip_zero_struct(&archive);

        if (!open_zip_reader(&archive, archive_path.string())) {
            // TRN %1% is archive path
            std::string err_msg = GUI::format(_u8L("Loading of a ZIP archive on path %1% has failed."), archive_path.string());
            throw Slic3r::FileIOError(err_msg);
        }
        mz_uint num_entries = mz_zip_reader_get_num_files(&archive);
        mz_zip_archive_file_stat stat;
        // selected_paths contains paths and its uncompressed size. The size is used to distinguish between files with same path.
        std::vector<std::pair<fs::path, size_t>> selected_paths;
        FileArchiveDialog dlg(static_cast<wxWindow*>(wxGetApp().mainframe), &archive, selected_paths);
        if (dlg.ShowModal() == wxID_OK)
        {      
            std::string archive_path_string = archive_path.string();
            archive_path_string = archive_path_string.substr(0, archive_path_string.size() - 4);
            fs::path archive_dir(wxStandardPaths::Get().GetTempDir().utf8_str().data());
           
            for (auto& path_w_size : selected_paths) {
                const fs::path& path = path_w_size.first;
                size_t size = path_w_size.second;
                // find path in zip archive
                for (mz_uint i = 0; i < num_entries; ++i) {
                    if (mz_zip_reader_file_stat(&archive, i, &stat)) {
                        if (size != stat.m_uncomp_size) // size must fit
                            continue;
                        wxString wname = boost::nowide::widen(stat.m_filename);
                        std::string name = into_u8(wname);
                        fs::path archive_path(name);

                        std::string extra(1024, 0);
                        size_t extra_size = mz_zip_reader_get_filename_from_extra(&archive, i, extra.data(), extra.size());
                        if (extra_size > 0) {
                            archive_path = fs::path(extra.substr(0, extra_size));
                            name = archive_path.string();
                        }

                        if (archive_path.empty())
                            continue;
                        if (path != archive_path) 
                            continue;
                        // decompressing
                        try
                        {
                            std::replace(name.begin(), name.end(), '\\', '/');
                            // rename if file exists
                            std::string filename = path.filename().string();
                            std::string extension = path.extension().string();
                            std::string just_filename = filename.substr(0, filename.size() - extension.size());
                            std::string final_filename = just_filename;

                            size_t version = 0;
                            while (fs::exists(archive_dir / (final_filename + extension)))
                            {
                                ++version;
                                final_filename = just_filename + "(" + std::to_string(version) + ")";
                            }
                            filename = final_filename + extension;
                            fs::path final_path = archive_dir / filename;
                            std::string buffer((size_t)stat.m_uncomp_size, 0);
                            // Decompress action. We already has correct file index in stat structure. 
                            mz_bool res = mz_zip_reader_extract_to_mem(&archive, stat.m_file_index, (void*)buffer.data(), (size_t)stat.m_uncomp_size, 0);
                            if (res == 0) {
                                // TRN: First argument = path to file, second argument = error description
                                wxString error_log = GUI::format_wxstr(_L("Failed to unzip file to %1%: %2%"), final_path.string(), mz_zip_get_error_string(mz_zip_get_last_error(&archive)));
                                BOOST_LOG_TRIVIAL(error) << error_log;
                                show_error(nullptr, error_log);
                                break;
                            }
                            // write buffer to file
                            fs::fstream file(final_path, std::ios::out | std::ios::binary | std::ios::trunc);
                            file.write(buffer.c_str(), buffer.size());
                            file.close();
                            if (!fs::exists(final_path)) {
                                wxString error_log = GUI::format_wxstr(_L("Failed to find unzipped file at %1%. Unzipping of file has failed."), final_path.string());
                                BOOST_LOG_TRIVIAL(error) << error_log;
                                show_error(nullptr, error_log);
                                break;
                            }
                            BOOST_LOG_TRIVIAL(info) << "Unzipped " << final_path;
                            if (!boost::algorithm::iends_with(filename, ".3mf") && !boost::algorithm::iends_with(filename, ".amf")) {
                                non_project_paths.emplace_back(final_path);
                                break;
                            }
                            // if 3mf - read archive headers to find project file
                            auto [is_project, ps_version] = is_project_3mf(final_path.string());
                            if ((boost::algorithm::iends_with(filename, ".3mf") && !is_project) ||
                                (boost::algorithm::iends_with(filename, ".amf") && !boost::algorithm::iends_with(filename, ".zip.amf"))) {
                                non_project_paths.emplace_back(final_path);
                                break;
                            }

                            project_paths.emplace_back(final_path);
                            break;
                        }
                        catch (const std::exception& e)
                        {
                            // ensure the zip archive is closed and rethrow the exception
                            close_zip_reader(&archive);
                            throw Slic3r::FileIOError(e.what());
                        }
                    }
                }
            }
            close_zip_reader(&archive);
            if (non_project_paths.size() + project_paths.size() != selected_paths.size())
                BOOST_LOG_TRIVIAL(error) << "Decompresing of archive did not retrieve all files. Expected files: " 
                                         << selected_paths.size() 
                                         << " Decopressed files: " 
                                         << non_project_paths.size() + project_paths.size();
        } else {
            close_zip_reader(&archive);
            return false;
        }
        
    }
    catch (const Slic3r::FileIOError& e) {
        // zip reader should be already closed or not even opened
        GUI::show_error(this, e.what());
        return false;
    }
    // none selected
    if (project_paths.empty() && non_project_paths.empty())
    {
        return false;
    }
    // 1 project file and some models - behave like drag n drop of 3mf and then load models
    if (project_paths.size() == 1)
    {
        wxArrayString aux;
        aux.Add(from_u8(project_paths.front().string()));
        bool loaded3mf = load_files(aux, true);
        load_files(non_project_paths, true, false);
        boost::system::error_code ec;
        if (loaded3mf) {
            fs::remove(project_paths.front(), ec);
            if (ec)
                BOOST_LOG_TRIVIAL(error) << ec.message();
        }
        for (const fs::path& path : non_project_paths) {
            // Delete file from temp file (path variable), it will stay only in app memory.
            boost::system::error_code ec;
            fs::remove(path, ec);
            if (ec)
                BOOST_LOG_TRIVIAL(error) << ec.message();
        }
        return true;
    }

    // load all projects and all models as geometry
    load_files(project_paths, true, false);
    load_files(non_project_paths, true, false);
   

    for (const fs::path& path : project_paths) {
        // Delete file from temp file (path variable), it will stay only in app memory.
        boost::system::error_code ec;
        fs::remove(path, ec);
        if (ec)
            BOOST_LOG_TRIVIAL(error) << ec.message();
    }
    for (const fs::path& path : non_project_paths) {
        // Delete file from temp file (path variable), it will stay only in app memory.
        boost::system::error_code ec;
        fs::remove(path, ec);
        if (ec)
            BOOST_LOG_TRIVIAL(error) << ec.message();
    }

    return true;
}

class ProjectDropDialog : public DPIDialog
{
    int m_action { 0 };
public:
    enum class LoadType : unsigned char
    {
        Unknown,
        OpenProject,
        LoadGeometry,
        LoadConfig,
        OpenWindow
    };
    ProjectDropDialog(const std::string& filename);

    int get_action() const { return m_action + 1; }

protected:
    void on_dpi_changed(const wxRect& suggested_rect) override;
};

ProjectDropDialog::ProjectDropDialog(const std::string& filename)
    : DPIDialog(static_cast<wxWindow*>(wxGetApp().mainframe), wxID_ANY,
        format_wxstr("%1% - %2%", SLIC3R_APP_NAME, _L("Load project file")), wxDefaultPosition,
        wxDefaultSize, wxDEFAULT_DIALOG_STYLE)
{
    SetFont(wxGetApp().normal_font());

    bool single_instance_only = wxGetApp().app_config->get_bool("single_instance");
    wxBoxSizer* main_sizer = new wxBoxSizer(wxVERTICAL);
    wxArrayString choices;
    choices.reserve(4);
    choices.Add(_L("Open as project"));
    choices.Add(_L("Import 3D models only"));
    choices.Add(_L("Import config only"));
    if (!single_instance_only)
        choices.Add(_L("Start new PrusaSlicer instance"));

    main_sizer->Add(new wxStaticText(this, wxID_ANY,
        get_wraped_wxString(_L("Select an action to apply to the file") + ": " + from_u8(filename))), 0, wxEXPAND | wxALL, 10);

    m_action = std::clamp(std::stoi(wxGetApp().app_config->get("drop_project_action")),
        static_cast<int>(LoadType::OpenProject), single_instance_only? static_cast<int>(LoadType::LoadConfig) : static_cast<int>(LoadType::OpenWindow)) - 1;

    wxStaticBox* action_stb = new wxStaticBox(this, wxID_ANY, _L("Action"));
    if (!wxOSX) action_stb->SetBackgroundStyle(wxBG_STYLE_PAINT);
    action_stb->SetFont(wxGetApp().normal_font());

    wxStaticBoxSizer* stb_sizer = new wxStaticBoxSizer(action_stb, wxVERTICAL);
    int id = 0;
    for (const wxString& label : choices) {
        wxRadioButton* btn = new wxRadioButton(this, wxID_ANY, label, wxDefaultPosition, wxDefaultSize, id == 0 ? wxRB_GROUP : 0);
        btn->SetValue(id == m_action);
        btn->Bind(wxEVT_RADIOBUTTON, [this, id](wxCommandEvent&) { m_action = id; });
        stb_sizer->Add(btn, 0, wxEXPAND | wxTOP, 5);
        id++;
    }
    main_sizer->Add(stb_sizer, 1, wxEXPAND | wxRIGHT | wxLEFT, 10);

    wxBoxSizer* bottom_sizer = new wxBoxSizer(wxHORIZONTAL);
    ::CheckBox* check = new ::CheckBox(this, _L("Don't show again"));
    check->Bind(wxEVT_CHECKBOX, [](wxCommandEvent& evt) {
        wxGetApp().app_config->set("show_drop_project_dialog", evt.IsChecked() ? "0" : "1");
        });

    bottom_sizer->Add(check, 0, wxEXPAND | wxRIGHT, 5);
    bottom_sizer->Add(CreateStdDialogButtonSizer(wxOK | wxCANCEL), 0, wxEXPAND | wxLEFT, 5);
    main_sizer->Add(bottom_sizer, 0, wxEXPAND | wxALL, 10);

    SetSizer(main_sizer);
    main_sizer->SetSizeHints(this);

    // Update DarkUi just for buttons
    wxGetApp().UpdateDlgDarkUI(this, true);
}

void ProjectDropDialog::on_dpi_changed(const wxRect& suggested_rect)
{
    const int em = em_unit();
    SetMinSize(wxSize(65 * em, 30 * em));
    Fit();
    Refresh();
}

bool Plater::load_files(const wxArrayString& filenames, bool delete_after_load/*=false*/)
{
    const std::regex pattern_drop(".*[.](stl|obj|amf|3mf|prusa|step|stp|zip|printRequest)", std::regex::icase);
    const std::regex pattern_gcode_drop(".*[.](gcode|g|bgcode|bgc)", std::regex::icase);

    std::vector<fs::path> paths;

    // gcode viewer section
    if (wxGetApp().is_gcode_viewer()) {
        for (const auto& filename : filenames) {
            fs::path path(into_path(filename));
            if (std::regex_match(path.string(), pattern_gcode_drop))
                paths.push_back(std::move(path));
        }

        if (paths.size() > 1) {
            //wxMessageDialog(static_cast<wxWindow*>(this), _L("You can open only one .gcode file at a time."),
            MessageDialog(static_cast<wxWindow*>(this), _L("You can open only one .gcode file at a time."),
                wxString(SLIC3R_APP_NAME) + " - " + _L("Drag and drop G-code file"), wxCLOSE | wxICON_WARNING | wxCENTRE).ShowModal();
            return false;
        }
        else if (paths.size() == 1) {
            load_gcode(from_path(paths.front()));
            return true;
        }
        return false;
    }

    // editor section
    for (const auto& filename : filenames) {
        fs::path path(into_path(filename));
        if (std::regex_match(path.string(), pattern_drop))
            paths.push_back(std::move(path));
        else if (std::regex_match(path.string(), pattern_gcode_drop))
            start_new_gcodeviewer(&filename);
        else
            continue;
    }
    if (paths.empty())
        // Likely all paths processed were gcodes, for which a G-code viewer instance has hopefully been started.
        return false;

    // searches for project files

    bool load_just_one_file = paths.size() == 1;
    bool load_config = true;

    for (std::vector<fs::path>::const_reverse_iterator it = paths.rbegin(); it != paths.rend(); ++it) {
        std::string filename = (*it).filename().string();

        bool handle_as_project = boost::algorithm::iends_with(filename, ".3mf");
        auto [has_config, ps_version] = is_project_3mf(it->string());

        if (boost::algorithm::iends_with(filename, ".zip") && has_config) {
            BOOST_LOG_TRIVIAL(warning) << "File with .zip extension is 3mf project, opening as it would have .3mf extension: " << *it;
            handle_as_project = true;
        }
        if (handle_as_project && load_just_one_file) {
            ProjectDropDialog::LoadType load_type = ProjectDropDialog::LoadType::Unknown;
            {
                if (boost::algorithm::iends_with(filename, ".3mf") && (!has_config && !ps_version.has_value())) {
                    // Projects generated by PrusaSlicer is expected to have config. If absent, it will be reported later.
                    load_type = ProjectDropDialog::LoadType::LoadGeometry;
                } else {
                    if (wxGetApp().app_config->get_bool("show_drop_project_dialog")) {
                        ProjectDropDialog dlg(filename);
                        if (dlg.ShowModal() == wxID_OK) {
                            int choice = dlg.get_action();
                            load_type = static_cast<ProjectDropDialog::LoadType>(choice);
                            wxGetApp().app_config->set("drop_project_action", std::to_string(choice));
                        }
                    }
                    else
                        load_type = static_cast<ProjectDropDialog::LoadType>(std::clamp(std::stoi(wxGetApp().app_config->get("drop_project_action")),
                            static_cast<int>(ProjectDropDialog::LoadType::OpenProject), static_cast<int>(ProjectDropDialog::LoadType::LoadConfig)));
                }
            }

            if (load_type == ProjectDropDialog::LoadType::Unknown)
                return false;

            switch (load_type) {
            case ProjectDropDialog::LoadType::OpenProject: {
                if (wxGetApp().can_load_project())
                    load_project(from_path(*it));
                break;
            }
            case ProjectDropDialog::LoadType::LoadGeometry: {
//                Plater::TakeSnapshot snapshot(this, _L("Import Object"));
                load_files({ *it }, true, false);
                break;
            }
            case ProjectDropDialog::LoadType::LoadConfig: {
                load_files({ *it }, false, true);
                break;
            }
            case ProjectDropDialog::LoadType::OpenWindow: {
                wxString f = from_path(*it);
                start_new_slicer(&f, false, delete_after_load);
                return false; // did not load anything to this instance
            }
            case ProjectDropDialog::LoadType::Unknown : {
                assert(false);
                break;
            }
            }

            return true;
        } else if (boost::algorithm::iends_with(filename, ".zip")) {
            if (!load_just_one_file) {
                WarningDialog dlg(static_cast<wxWindow*>(this),
                                  format_wxstr(_L("You have several files for loading and \"%1%\" is one of them.\n"
                                                  "Please note that only one .zip file can be loaded at a time.\n"
                                                  "In this case we can load just \"%1%\".\n\n"
                                                  "Would you like to continue anyway?"), filename),
                    format_wxstr("%1% - %2%", SLIC3R_APP_NAME, _L("Drag and drop several files")), wxYES_NO);
                if (dlg.ShowModal() == wxID_NO)
                    return false;
            }
            return preview_zip_archive(*it);
        }
        else if (handle_as_project)
            load_config = false;
    }

    if (!load_config) {
        // Means that we DnDing several files and 3mf file(s) is/are among selection
        // And as a result we need to upload just a geometry from all files
        WarningDialog dlg(static_cast<wxWindow*>(this), _L("You have several files for loading.\n"
                                                           "Please note that only geometry will be uploaded from all 3mf files.\n\n"
                                                           "Would you like to continue anyway?"),
                          format_wxstr("%1% - %2%", SLIC3R_APP_NAME,  _L("Drag and drop several files")), wxYES_NO);
        if (dlg.ShowModal() == wxID_NO)
            return false;
    }

    // other files
    wxString snapshot_label;
    assert(!paths.empty());
    if (paths.size() == 1) {
        snapshot_label = _L("Load File");
        snapshot_label += ": ";
        snapshot_label += wxString::FromUTF8(paths.front().filename().string().c_str());
    }
    else {
        snapshot_label = _L("Load Files");
        snapshot_label += ": ";
        snapshot_label += wxString::FromUTF8(paths.front().filename().string().c_str());
        for (size_t i = 1; i < paths.size(); ++i) {
            snapshot_label += ", ";
            snapshot_label += wxString::FromUTF8(paths[i].filename().string().c_str());
        }
    }
    Plater::TakeSnapshot snapshot(this, snapshot_label);
    load_files(paths, true, load_config);

    return true;
}

void Plater::update(unsigned int flags) { p->update(flags); }

Worker &Plater::get_ui_job_worker() { return p->m_worker; }

const Worker &Plater::get_ui_job_worker() const { return p->m_worker; }

void Plater::update_ui_from_settings() { p->update_ui_from_settings(); }

void Plater::select_view(const std::string& direction) { p->select_view(direction); }

void Plater::select_view_3D(const std::string& name) { p->select_view_3D(name); }

bool Plater::is_preview_shown() const { return p->is_preview_shown(); }
bool Plater::is_preview_loaded() const { return p->is_preview_loaded(); }
bool Plater::is_view3D_shown() const { return p->is_view3D_shown(); }

bool Plater::are_view3D_labels_shown() const { return p->are_view3D_labels_shown(); }
void Plater::show_view3D_labels(bool show) { p->show_view3D_labels(show); }

bool Plater::is_legend_shown() const { return p->is_legend_shown(); }
void Plater::show_legend(bool show) { p->show_legend(show); }

bool Plater::is_sidebar_collapsed() const { return p->is_sidebar_collapsed(); }
void Plater::collapse_sidebar(bool show) { p->collapse_sidebar(show); }

bool Plater::is_view3D_layers_editing_enabled() const { return p->is_view3D_layers_editing_enabled(); }

void Plater::select_all() { p->select_all(); }
void Plater::deselect_all() { p->deselect_all(); }

void Plater::remove(size_t obj_idx) { p->remove(obj_idx); }
void Plater::reset() { p->reset(); }
void Plater::reset_with_confirm()
{
    if (p->model.objects.empty() ||
        //wxMessageDialog(static_cast<wxWindow*>(this), _L("All objects will be removed, continue?"), wxString(SLIC3R_APP_NAME) + " - " + _L("Delete all"), wxYES_NO | wxCANCEL | wxYES_DEFAULT | wxCENTRE).ShowModal() == wxID_YES)
        MessageDialog(static_cast<wxWindow*>(this), _L("All objects will be removed, continue?"), wxString(SLIC3R_APP_NAME) + " - " + _L("Delete all"), wxYES_NO | wxCANCEL | wxYES_DEFAULT | wxCENTRE).ShowModal() == wxID_YES)
        reset();
}

bool Plater::delete_object_from_model(size_t obj_idx) { return p->delete_object_from_model(obj_idx); }

void Plater::remove_selected()
{
    if (p->get_selection().is_empty())
        return;

    Plater::TakeSnapshot snapshot(this, _L("Delete Selected Objects"));
    get_ui_job_worker().cancel_all();
    p->view3D->delete_selected();
}

void Plater::increase_instances(size_t num, int obj_idx, int inst_idx)
{
    if (! can_increase_instances()) { return; }

    Plater::TakeSnapshot snapshot(this, _L("Increase Instances"));

    if (obj_idx < 0) {
        obj_idx = p->get_selected_object_idx();
        if (obj_idx < 0) {
            // It's a case of increasing per 1 instance, when multiple objects are selected
            if (const auto obj_idxs = get_selection().get_object_idxs(); !obj_idxs.empty()) {
                // we need a copy made here because the selection changes at every call of increase_instances()
                const Selection::ObjectIdxsToInstanceIdxsMap content = p->get_selection().get_content();
                for (const unsigned int obj_id : obj_idxs) {
                    if (auto obj_it = content.find(int(obj_id)); obj_it != content.end())
                        increase_instances(1, int(obj_id), *obj_it->second.rbegin());
                }
            }
            return;
        }
    }
    assert(obj_idx >= 0);

    ModelObject* model_object = p->model.objects[obj_idx];

    if (inst_idx < 0 && get_selected_object_idx() >= 0) {
        inst_idx = get_selection().get_instance_idx();
        if (0 > inst_idx || inst_idx >= int(model_object->instances.size()))
            inst_idx = -1;
    }
    ModelInstance* model_instance = (inst_idx >= 0) ? model_object->instances[inst_idx] : model_object->instances.back();

    bool was_one_instance = model_object->instances.size()==1;

    double offset_base = canvas3D()->get_size_proportional_to_max_bed_size(0.05);
    double offset = offset_base;
    for (size_t i = 0; i < num; i++, offset += offset_base) {
        Vec3d offset_vec = model_instance->get_offset() + Vec3d(offset, offset, 0.0);
        Geometry::Transformation trafo = model_instance->get_transformation();
        trafo.set_offset(offset_vec);
        model_object->add_instance(trafo);
    }

    p->update();

    p->get_selection().add_instance(obj_idx, (int)model_object->instances.size() - 1);

    sidebar().obj_list()->increase_object_instances(obj_idx, was_one_instance ? num + 1 : num);

    p->selection_changed();
    this->p->schedule_background_process();
}

void Plater::decrease_instances(size_t num, int obj_idx/* = -1*/)
{
    if (! can_decrease_instances(obj_idx)) { return; }

    Plater::TakeSnapshot snapshot(this, _L("Decrease Instances"));

    if (obj_idx < 0)
        obj_idx = p->get_selected_object_idx();

    if (obj_idx < 0) {
        if (const auto obj_ids = get_selection().get_object_idxs(); !obj_ids.empty())
            for (const size_t obj_id : obj_ids)
                decrease_instances(1, int(obj_id));
        return;
    }

    ModelObject* model_object = p->model.objects[obj_idx];
    if (model_object->instances.size() > num) {
        for (size_t i = 0; i < num; ++ i)
            model_object->delete_last_instance();
        p->update();
        // Delete object from Sidebar list. Do it after update, so that the GLScene selection is updated with the modified model.
        sidebar().obj_list()->decrease_object_instances(obj_idx, num);
    }
    else {
        remove(obj_idx);
    }

    if (!model_object->instances.empty())
        p->get_selection().add_instance(obj_idx, (int)model_object->instances.size() - 1);

    p->selection_changed();
    this->p->schedule_background_process();
}

static long GetNumberFromUser(  const wxString& msg,
                                const wxString& prompt,
                                const wxString& title,
                                long value,
                                long min,
                                long max,
                                wxWindow* parent)
{
#ifdef _WIN32
    wxNumberEntryDialog dialog(parent, msg, prompt, title, value, min, max, wxDefaultPosition);
    wxGetApp().UpdateDlgDarkUI(&dialog);
    if (dialog.ShowModal() == wxID_OK)
        return dialog.GetValue();

    return -1;
#else
    return wxGetNumberFromUser(msg, prompt, title, value, min, max, parent);
#endif
}

void Plater::set_number_of_copies()
{
    const auto obj_idxs = get_selection().get_object_idxs();
    if (obj_idxs.empty())
        return;

    const size_t init_cnt = obj_idxs.size() == 1 ? p->model.objects[*obj_idxs.begin()]->instances.size() : 1;
    const int num = GetNumberFromUser( " ", _L("Enter the number of copies:"),
                                    _L("Copies of the selected object"), init_cnt, 0, 1000, this );
    if (num < 0)
        return;
    TakeSnapshot snapshot(this, wxString::Format(_L("Set numbers of copies to %d"), num));

    // we need a copy made here because the selection changes at every call of increase_instances()
    Selection::ObjectIdxsToInstanceIdxsMap content = p->get_selection().get_content();

    for (const auto& obj_idx : obj_idxs) {
        ModelObject* model_object = p->model.objects[obj_idx];
        const int diff = num - (int)model_object->instances.size();
        if (diff > 0) {
            if (auto obj_it = content.find(int(obj_idx)); obj_it != content.end())
                increase_instances(diff, int(obj_idx), *obj_it->second.rbegin());
        }
        else if (diff < 0)
            decrease_instances(-diff, int(obj_idx));
    }
}

void Plater::fill_bed_with_instances()
{
    auto &w = get_ui_job_worker();
    if (w.is_idle()) {

        FillBedJob2::Callbacks cbs;
        cbs.on_processed = [this](arr2::ArrangeTaskBase &t) {
            p->take_snapshot(_L("Fill bed"));
        };

        auto scene = arr2::Scene{
            build_scene(*this, ArrangeSelectionMode::CurrentBedSelectionOnly)};

        cbs.on_finished = [this](arr2::FillBedTaskResult &result) {
            auto [prototype_mi, pos] = arr2::find_instance_by_id(model(), result.prototype_id);

            if (!prototype_mi)
                return;

            ModelObject *model_object = prototype_mi->get_object();
            assert(model_object);

            model_object->ensure_on_bed();

            size_t inst_cnt = model_object->instances.size();
            if (inst_cnt == 0)
                return;

            int object_idx = pos.obj_idx;

            if (object_idx < 0 || object_idx >= int(model().objects.size()))
                return;

            update(static_cast<unsigned int>(UpdateParams::FORCE_FULL_SCREEN_REFRESH));

            if (!result.to_add.empty()) {
                auto added_cnt = result.to_add.size();

                // FIXME: somebody explain why this is needed for
                // increase_object_instances
                if (result.arranged_items.size() == 1)
                    added_cnt++;

                sidebar().obj_list()->increase_object_instances(object_idx, added_cnt);
            }
        };

        replace_job(w, std::make_unique<FillBedJob2>(std::move(scene), cbs));
    }
}

bool Plater::is_selection_empty() const
{
    return p->get_selection().is_empty() || p->get_selection().is_wipe_tower();
}

void Plater::scale_selection_to_fit_print_volume()
{
    p->scale_selection_to_fit_print_volume();
}

void Plater::convert_unit(ConversionType conv_type)
{
    std::vector<int> obj_idxs, volume_idxs;
    wxGetApp().obj_list()->get_selection_indexes(obj_idxs, volume_idxs);
    if (obj_idxs.empty() && volume_idxs.empty())
        return;

    // We will remove object indexes after convertion 
    // So, resort object indexes descending to avoid the crash after remove 
    std::sort(obj_idxs.begin(), obj_idxs.end(), std::greater<int>());

    TakeSnapshot snapshot(this, conv_type == ConversionType::CONV_FROM_INCH  ? _L("Convert from imperial units") :
                                conv_type == ConversionType::CONV_TO_INCH    ? _L("Revert conversion from imperial units") :
                                conv_type == ConversionType::CONV_FROM_METER ? _L("Convert from meters") : _L("Revert conversion from meters"));
    wxBusyCursor wait;

    {
        Model tmp_model;
        for (int obj_idx : obj_idxs) {
            //ModelObject *object = p->model.objects[obj_idx];
            //object->convert_units(objects, conv_type, volume_idxs);
            ModelProcessing::convert_units(tmp_model, p->model.objects[obj_idx], conv_type, volume_idxs);
            remove(obj_idx);
        }
        p->load_model_objects(tmp_model.objects);
    }

    
    Selection& selection = p->view3D->get_canvas3d()->get_selection();
    size_t last_obj_idx = p->model.objects.size() - 1;

    if (volume_idxs.empty()) {
        for (size_t i = 0; i < obj_idxs.size(); ++i)
            selection.add_object((unsigned int)(last_obj_idx - i), i == 0);
    }
    else {
        for (int vol_idx : volume_idxs)
            selection.add_volume(last_obj_idx, vol_idx, 0, false);
    }
}

void Plater::toggle_layers_editing(bool enable)
{
    if (canvas3D()->is_layers_editing_enabled() != enable)
        canvas3D()->force_main_toolbar_left_action(canvas3D()->get_main_toolbar_item_id("layersediting"));
}

void Plater::apply_cut_object_to_model(size_t obj_idx, const ModelObjectPtrs& new_objects)
{
    const int active_bed{s_multiple_beds.get_active_bed()};

    const ModelInstancePtrs &instances{model().objects[obj_idx]->instances};
    const ObjectID first_instance_id{instances.front()->id()};
    const std::optional<int> first_instance_bed_index{
        s_multiple_beds.get_inst_map().count(first_instance_id) > 0 ?
        std::optional{s_multiple_beds.get_inst_map().at(first_instance_id)} :
        std::nullopt
    };

    const auto bed_index{
        instances.size() == 1 && first_instance_bed_index ?
        *first_instance_bed_index :
        active_bed
    };

    model().delete_object(obj_idx);
    sidebar().obj_list()->delete_object_from_list(obj_idx);

    // suppress to call selection update for Object List to avoid call of early Gizmos on/off update
    p->load_model_objects(new_objects, false, false);

    // now process all updates of the 3d scene
    update();

    // Update InfoItems in ObjectList after update() to use of a correct value of the GLCanvas3D::is_sinking(),
    // which is updated after a view3D->reload_scene(false, flags & (unsigned int)UpdateParams::FORCE_FULL_SCREEN_REFRESH) call
    for (size_t idx = 0; idx < p->model.objects.size(); idx++)
        wxGetApp().obj_list()->update_info_items(idx);

    Selection& selection = p->get_selection();
    size_t last_id = p->model.objects.size() - 1;
    for (size_t i = 0; i < new_objects.size(); ++i) {
        selection.add_object((unsigned int)(last_id - i), i == 0);
        const ModelInstance* mi = p->model.objects[last_id - i]->instances.front();
        const ObjectID instance_id{mi->id().id};
        s_multiple_beds.set_instance_bed(instance_id, mi->printable, bed_index);
    }

    s_multiple_beds.inst_map_updated();
    s_multiple_beds.set_active_bed(bed_index);

    UIThreadWorker w;
    arrange(w, ArrangeSelectionMode::CurrentBedSelectionOnly);
    w.wait_for_idle();
    s_multiple_beds.set_active_bed(active_bed);
}



static wxString check_binary_vs_ascii_gcode_extension(PrinterTechnology pt, const std::string& ext, bool binary_output)
{
    wxString err_out;
    if (pt == ptFFF) {
        const bool binary_extension = (ext == ".bgcode" || ext == ".bgc");
        const bool ascii_extension = (ext == ".gcode" || ext == ".g" || ext == ".gco");
        if (binary_output && ascii_extension) {
            // TRN The placeholder %1% is the file extension the user has selected.
            err_out = format_wxstr(_L("Cannot save binary G-code with %1% extension.\n\n"
                "Use a different extension or disable <a href=%2%>binary G-code export</a> "
                "in Printer Settings."), ext, "binary_gcode;printer");
        }
        if (!binary_output && binary_extension) {
            // TRN The placeholder %1% is the file extension the user has selected.
            err_out = format_wxstr(_L("Cannot save ASCII G-code with %1% extension.\n\n"
                "Use a different extension or enable <a href=%2%>binary G-code export</a> "
                "in Printer Settings."), ext, "binary_gcode;printer");
        }
    }
    return err_out;
}



std::optional<fs::path> Plater::get_default_output_file() {
    try {
        // Update the background processing, so that the placeholder parser will get the correct values for the ouput file template.
        // Also if there is something wrong with the current configuration, a pop-up dialog will be shown and the export will not be performed.
        unsigned int state = this->p->update_restart_background_process(false, false);
        if (state & priv::UPDATE_BACKGROUND_PROCESS_INVALID) {
            return std::nullopt;
        }
        const std::string path{
            this->p->background_process.output_filepath_for_project(
                into_path(get_project_filename(".3mf"))
            )
        };
        return fs::path(Slic3r::fold_utf8_to_ascii(path));
    } catch (const Slic3r::PlaceholderParserError &ex) {
        // Show the error with monospaced font.
        show_error(this, ex.what(), true);
        return std::nullopt;
    } catch (const std::exception &ex) {
        show_error(this, ex.what(), false);
        return std::nullopt;
    }
}

std::string get_output_start_dir(const bool prefer_removable, const fs::path &default_output_file) {
    const AppConfig &appconfig{*wxGetApp().app_config};
    RemovableDriveManager &removable_drive_manager{*wxGetApp().removable_drive_manager()};
    // Get a last save path, either to removable media or to an internal media.
    std::string last_output_dir{appconfig.get_last_output_dir(
        default_output_file.parent_path().string(),
        prefer_removable
    )};
    if (!prefer_removable) {
        return last_output_dir;
    }

    // Returns a path to a removable media if it exists, prefering start_dir. Update the internal removable drives database.
    std::string removable_dir{removable_drive_manager.get_removable_drive_path(last_output_dir)};
    if (removable_dir.empty()) {
        // Direct user to the last internal media.
        return appconfig.get_last_output_dir(default_output_file.parent_path().string(), false);
    }

    return removable_dir;
}

std::optional<wxString> Plater::check_output_path_has_error(const boost::filesystem::path& path) const {
    const std::string filename = path.filename().string();
    const std::string ext      = boost::algorithm::to_lower_copy(path.extension().string());
    if (has_illegal_characters(filename)) {
        return {
            _L("The provided file name is not valid.") + "\n" +
            _L("The following characters are not allowed by a FAT file system:") + " <>:/\\|?*\""
        };
    }
    if (this->printer_technology() == ptFFF) {
        bool supports_binary = wxGetApp().preset_bundle->printers.get_edited_preset().config.opt_bool("binary_gcode");
        bool uses_binary = wxGetApp().app_config->get_bool("use_binary_gcode_when_supported");
        const wxString error{check_binary_vs_ascii_gcode_extension(
            printer_technology(), ext, supports_binary && uses_binary
        )};
        if (!error.IsEmpty()) {
            return error;
        }
    }
    return std::nullopt;
};

std::optional<fs::path> Plater::get_output_path(const std::string &start_dir, const fs::path &default_output_file) {
    const std::string ext = default_output_file.extension().string();
    wxFileDialog dlg(this, (printer_technology() == ptFFF) ? _L("Save G-code file as:") : _L("Save SL1 / SL1S file as:"),
        start_dir,
        from_path(default_output_file.filename()),
        printer_technology() == ptFFF ? GUI::file_wildcards(FT_GCODE, ext) :
                                        GUI::sla_wildcards(active_sla_print().printer_config().sla_archive_format.value.c_str(), ext),
        wxFD_SAVE | wxFD_OVERWRITE_PROMPT
    );

    if (dlg.ShowModal() != wxID_OK) {
        return std::nullopt;
    }

    const fs::path output_path{into_path(dlg.GetPath())};
    if (auto error{check_output_path_has_error(output_path)}) {
        const t_link_clicked on_link_clicked = [](const std::string& key) -> void { wxGetApp().jump_to_option(key); };
        ErrorDialog(this, *error, on_link_clicked).ShowModal();
        return std::nullopt;
    }
    return output_path;
}

std::optional<fs::path> Plater::get_multiple_output_dir(const std::string &start_dir) {
    wxDirDialog dlg(
        this,
        _L("Choose export directory:"),
        start_dir
    );

    if (dlg.ShowModal() != wxID_OK) {
        return std::nullopt;
    }

    const fs::path output_path{into_path(dlg.GetPath())};
    return output_path;
}

void Plater::export_gcode(bool prefer_removable)
{
    if (p->model.objects.empty())
        return;

    if (canvas3D()->get_gizmos_manager().is_in_editing_mode(true))
        return;


    if (!is_sliceable(s_print_statuses[s_multiple_beds.get_active_bed()]))
        return;

    // If possible, remove accents from accented latin characters.
    // This function is useful for generating file names to be processed by legacy firmwares.
    const auto optional_default_output_file{this->get_default_output_file()};
    if (!optional_default_output_file) {
        return;
    }
    const fs::path &default_output_file{*optional_default_output_file};
    const std::string start_dir{get_output_start_dir(prefer_removable, default_output_file)};

    const auto optional_output_path{get_output_path(start_dir, default_output_file)};
    if (!optional_output_path) {
        return;
    }
    const fs::path &output_path{*optional_output_path};

    export_gcode_to_path(output_path, [&](const bool path_on_removable_media){
        p->export_gcode(output_path, path_on_removable_media, PrintHostJob());
    });
}

void Plater::export_gcode_to_path(
    const fs::path &output_path,
    const std::function<void(bool)> &export_callback
) {
    AppConfig &appconfig{*wxGetApp().app_config};
    RemovableDriveManager &removable_drive_manager{*wxGetApp().removable_drive_manager()};
    bool path_on_removable_media = removable_drive_manager.set_and_verify_last_save_path(output_path.string());
    p->notification_manager->new_export_began(path_on_removable_media);
    p->exporting_status = path_on_removable_media ? ExportingStatus::EXPORTING_TO_REMOVABLE : ExportingStatus::EXPORTING_TO_LOCAL;
    p->last_output_path = output_path.string();
    p->last_output_dir_path = output_path.parent_path().string();
    export_callback(path_on_removable_media);
    // Storing a path to AppConfig either as path to removable media or a path to internal media.
    // is_path_on_removable_drive() is called with the "true" parameter to update its internal database as the user may have shuffled the external drives
    // while the dialog was open.
    appconfig.update_last_output_dir(output_path.parent_path().string(), path_on_removable_media);
}

struct PrintToExport {
    std::reference_wrapper<Slic3r::Print> print;
    std::reference_wrapper<Slic3r::GCodeProcessorResult> processor_result;
    int bed{};
};

void Plater::with_mocked_fff_background_process(
    Print &print,
    GCodeProcessorResult &result,
    const int bed_index,
    const std::function<void()> &callable
) {
    Print *original_print{&active_fff_print()};
    GCodeProcessorResult *original_result{this->p->background_process.get_gcode_result()};
    const int original_bed{s_multiple_beds.get_active_bed()};
    PrinterTechnology original_technology{this->printer_technology()};
    ScopeGuard guard{[&](){
        this->p->background_process.set_fff_print(original_print);
        this->p->background_process.set_gcode_result(original_result);
        this->p->background_process.select_technology(original_technology);
        s_multiple_beds.set_active_bed(original_bed);
    }};

    this->p->background_process.set_fff_print(&print);
    this->p->background_process.set_gcode_result(&result);
    this->p->background_process.select_technology(this->p->printer_technology);
    s_multiple_beds.set_active_bed(bed_index);

    callable();
}

void Plater::export_all_gcodes(bool prefer_removable) {
    const auto optional_default_output_file{this->get_default_output_file()};
    if (!optional_default_output_file) {
        return;
    }

    const fs::path &default_output_file{*optional_default_output_file};
    const std::string start_dir{get_output_start_dir(prefer_removable, default_output_file)};
    const auto optional_output_dir{get_multiple_output_dir(start_dir)};
    if (!optional_output_dir) {
        return;
    }
    const fs_path &output_dir{*optional_output_dir};


    std::map<int, PrintToExport> prints_to_export;
    std::vector<std::pair< int, std::optional<fs::path> >> paths;

    for (int print_index{0};  print_index < s_multiple_beds.get_number_of_beds(); ++print_index) {
        const std::unique_ptr<Print> &print{this->get_fff_prints()[print_index]};
        if (!print || !is_sliceable(s_print_statuses[print_index])) {
            paths.emplace_back(print_index, std::nullopt);
            continue;
        }

        fs::path default_filename{default_output_file.filename()};
        this->with_mocked_fff_background_process(
            *print,
            this->p->gcode_results[print_index],
            print_index,
            [&](){
                const auto optional_file{this->get_default_output_file()};
                if (!optional_file) {
                    return;
                }
                const fs::path &default_file{*optional_file};
                default_filename = default_file.filename();
            }
        );

        const fs::path filename{
            default_filename.stem().string()
            + "_bed"
            + std::to_string(print_index + 1)
            + default_filename.extension().string()
        };
        const fs::path output_file{output_dir / filename};
        prints_to_export.insert({
            print_index,
            {*print, this->p->gcode_results[print_index], print_index}
        });
        paths.emplace_back(print_index, output_file);
    }

    BulkExportDialog dialog{paths, _L("Export beds"),  "<>[]:/\\|?*\""};
    if (dialog.ShowModal() != wxID_OK) {
        return;
    }
    const std::vector<std::pair<int, std::optional<fs::path>>> output_paths{dialog.get_paths()};

    bool path_on_removable_media{false};
    for (auto &[bed_index, optional_path] : output_paths) {
        if (!optional_path) {
            continue;
        }

        const PrintToExport &print_to_export{prints_to_export.at(bed_index)};
        const fs::path &path{*optional_path};
        with_mocked_fff_background_process(
            print_to_export.print,
            print_to_export.processor_result,
            print_to_export.bed,
            [&](){
                this->p->background_process.set_temp_output_path(print_to_export.bed);
                export_gcode_to_path(
                    path,
                    [&](const bool on_removable){
                        this->p->background_process.finalize_gcode(
                            path.string(),
                            path_on_removable_media
                        );
                        path_on_removable_media = on_removable || path_on_removable_media;
                    }
                );
            }
        );
    }

    p->notification_manager->push_bulk_exporting_finished_notification(output_dir.string(), path_on_removable_media);
}

void Plater::export_stl_obj(bool extended, bool selection_only)
{
    if (p->model.objects.empty()) { return; }

    wxString path = p->get_export_file(FT_OBJECT);
    if (path.empty()) { return; }
    const std::string path_u8 = into_u8(path);

    wxBusyCursor wait;

    const auto &selection = p->get_selection();
    const auto obj_idx = selection.get_object_idx();
    if (selection_only && (obj_idx == -1 || selection.is_wipe_tower()))
        return;

    // Following lambda generates a combined mesh for export with normals pointing outwards.
    auto mesh_to_export_fff = [this](const ModelObject& mo, int instance_id) {
        TriangleMesh mesh;

        std::vector<csg::CSGPart> csgmesh;
        csgmesh.reserve(2 * mo.volumes.size());
        csg::model_to_csgmesh(mo, Transform3d::Identity(), std::back_inserter(csgmesh),
                              csg::mpartsPositive | csg::mpartsNegative | csg::mpartsDoSplits);

        auto csgrange = range(csgmesh);
        if (csg::is_all_positive(csgrange)) {
            mesh = TriangleMesh{csg::csgmesh_merge_positive_parts(csgrange)};
        } else if (csg::check_csgmesh_booleans(csgrange) == csgrange.end()) {
            try {
                auto cgalm = csg::perform_csgmesh_booleans(csgrange);
                mesh = MeshBoolean::cgal::cgal_to_triangle_mesh(*cgalm);
            } catch (...) {}
        }

        if (mesh.empty()) {
            get_notification_manager()->push_plater_error_notification(
                _u8L("Unable to perform boolean operation on model meshes. "
                     "Only positive parts will be exported."));

            for (const ModelVolume* v : mo.volumes)
                if (v->is_model_part()) {
                    TriangleMesh vol_mesh(v->mesh());
                    vol_mesh.transform(v->get_matrix(), true);
                    mesh.merge(vol_mesh);
                }
        }

        if (instance_id == -1) {
            TriangleMesh vols_mesh(mesh);
            mesh = TriangleMesh();
            for (const ModelInstance* i : mo.instances) {
                if (!i->is_printable())
                    continue;
                TriangleMesh m = vols_mesh;
                m.transform(i->get_matrix(), true);
                mesh.merge(m);
            }
        }
        else if (0 <= instance_id && instance_id < int(mo.instances.size()))
            mesh.transform(mo.instances[instance_id]->get_matrix(), true);
        return mesh;
    };

    auto mesh_to_export_sla = [&, this](const ModelObject& mo, int instance_id) {
        TriangleMesh mesh;

        const SLAPrintObject *object = this->active_sla_print().get_print_object_by_model_object_id(mo.id());

        if (!object || !object->get_mesh_to_print() || object->get_mesh_to_print()->empty()) {
            if (!extended)
                mesh = mesh_to_export_fff(mo, instance_id);
        }
        else {
            const Transform3d mesh_trafo_inv = object->trafo().inverse();
            const bool is_left_handed = object->is_left_handed();

            auto pad_mesh = extended? object->pad_mesh() : TriangleMesh{};
            pad_mesh.transform(mesh_trafo_inv);

            auto supports_mesh = extended ? object->support_mesh() : TriangleMesh{};
            supports_mesh.transform(mesh_trafo_inv);

            const std::vector<SLAPrintObject::Instance>& obj_instances = object->instances();
            for (const SLAPrintObject::Instance& obj_instance : obj_instances) {
                auto it = std::find_if(object->model_object()->instances.begin(), object->model_object()->instances.end(),
                                       [&obj_instance](const ModelInstance *mi) { return mi->id() == obj_instance.instance_id; });
                assert(it != object->model_object()->instances.end());

                if (it != object->model_object()->instances.end()) {
                    const bool one_inst_only = selection_only && ! selection.is_single_full_object();

                    const int instance_idx = it - object->model_object()->instances.begin();
                    const Transform3d& inst_transform = one_inst_only
                                                            ? Transform3d::Identity()
                                                            : object->model_object()->instances[instance_idx]->get_transformation().get_matrix();

                    TriangleMesh inst_mesh;

                    if (!pad_mesh.empty()) {
                        TriangleMesh inst_pad_mesh = pad_mesh;
                        inst_pad_mesh.transform(inst_transform, is_left_handed);
                        inst_mesh.merge(inst_pad_mesh);
                    }

                    if (!supports_mesh.empty()) {
                        TriangleMesh inst_supports_mesh = supports_mesh;
                        inst_supports_mesh.transform(inst_transform, is_left_handed);
                        inst_mesh.merge(inst_supports_mesh);
                    }

                    std::shared_ptr<const indexed_triangle_set> m = object->get_mesh_to_print();
                    TriangleMesh inst_object_mesh;
                    if (m)
                        inst_object_mesh = TriangleMesh{*m};

                    inst_object_mesh.transform(mesh_trafo_inv);
                    inst_object_mesh.transform(inst_transform, is_left_handed);

                    inst_mesh.merge(inst_object_mesh);

                           // ensure that the instance lays on the bed
                    inst_mesh.translate(0.0f, 0.0f, -inst_mesh.bounding_box().min.z());

                           // merge instance with global mesh
                    mesh.merge(inst_mesh);

                    if (one_inst_only)
                        break;
                }
            }
        }

        return mesh;
    };

    std::function<TriangleMesh(const ModelObject& mo, int instance_id)>
        mesh_to_export;

    if (p->printer_technology == ptFFF )
        mesh_to_export = mesh_to_export_fff;
    else
        mesh_to_export = mesh_to_export_sla;

    TriangleMesh mesh;
    if (selection_only) {
        const ModelObject* model_object = p->model.objects[obj_idx];
        if (selection.get_mode() == Selection::Instance)
            mesh = mesh_to_export(*model_object, (selection.is_single_full_object() && model_object->instances.size() > 1) ? -1 : selection.get_instance_idx());
        else {
            const GLVolume* volume = selection.get_first_volume();
            mesh = model_object->volumes[volume->volume_idx()]->mesh();
            mesh.transform(volume->get_volume_transformation().get_matrix(), true);
        }

        if (!selection.is_single_full_object() || model_object->instances.size() == 1)
            mesh.translate(-model_object->origin_translation.cast<float>());
    }
    else {
        for (const ModelObject* o : p->model.objects) {
            mesh.merge(mesh_to_export(*o, -1));
        }
    }

    if (path.Lower().EndsWith(".stl"))
        Slic3r::store_stl(path_u8.c_str(), &mesh, true);
    else if (path.Lower().EndsWith(".obj"))
        Slic3r::store_obj(path_u8.c_str(), &mesh);
}

namespace {
std::string get_file_name(const std::string &file_path)
{
    size_t pos_last_delimiter = file_path.find_last_of("/\\");
    size_t pos_point          = file_path.find_last_of('.');
    size_t offset             = pos_last_delimiter + 1;
    size_t count              = pos_point - pos_last_delimiter - 1;
    return file_path.substr(offset, count);
}
using SvgFile = EmbossShape::SvgFile;
using SvgFiles = std::vector<SvgFile*>;
std::string create_unique_3mf_filepath(const std::string &file, const SvgFiles svgs)
{
    // const std::string MODEL_FOLDER = "3D/"; // copy from file 3mf.cpp
    std::string path_in_3mf = "3D/" + file + ".svg";
    size_t suffix_number = 0;
    bool is_unique = false;
    do{
        is_unique = true;
        path_in_3mf = "3D/" + file + ((suffix_number++)? ("_" + std::to_string(suffix_number)) : "") + ".svg";
        for (SvgFile *svgfile : svgs) {
            if (svgfile->path_in_3mf.empty())
                continue;
            if (svgfile->path_in_3mf.compare(path_in_3mf) == 0) {
                is_unique = false;
                break;
            }
        } 
    } while (!is_unique);
    return path_in_3mf;
}

bool set_by_local_path(SvgFile &svg, const SvgFiles& svgs)
{
    // Try to find already used svg file
    for (SvgFile *svg_ : svgs) {
        if (svg_->path_in_3mf.empty())
            continue;
        if (svg.path.compare(svg_->path) == 0) {
            svg.path_in_3mf = svg_->path_in_3mf;
            return true;
        }
    }
    return false;
}

/// <summary>
/// Function to secure private data before store to 3mf
/// </summary>
/// <param name="model">Data(also private) to clean before publishing</param>
void publish(Model &model) {

    // SVG file publishing
    bool exist_new = false;
    SvgFiles svgfiles;
    for (ModelObject *object: model.objects){
        for (ModelVolume *volume : object->volumes) {
            if (!volume->emboss_shape.has_value())
                continue;
            if (volume->text_configuration.has_value())
                continue; // text dosen't have svg path

            assert(volume->emboss_shape->svg_file.has_value());
            if (!volume->emboss_shape->svg_file.has_value())
                continue;

            SvgFile* svg = &(*volume->emboss_shape->svg_file);
            if (svg->path_in_3mf.empty())
                exist_new = true;
            svgfiles.push_back(svg);
        }
    }

    if (exist_new){
        MessageDialog dialog(nullptr,
                             _L("Are you sure you want to store original SVGs with their local paths into the 3MF file?\n"
                                "If you hit 'NO', all SVGs in the project will not be editable any more."),
                             _L("Private protection"), wxYES_NO | wxICON_QUESTION);
        if (dialog.ShowModal() == wxID_NO){
            for (ModelObject *object : model.objects) 
                for (ModelVolume *volume : object->volumes)
                    if (volume->emboss_shape.has_value())
                        volume->emboss_shape.reset();
        }
    }

    for (SvgFile* svgfile : svgfiles){
        if (!svgfile->path_in_3mf.empty())
            continue; // already suggested path (previous save)

        // create unique name for svgs, when local path differ
        std::string filename = "unknown";
        if (!svgfile->path.empty()) {
            if (set_by_local_path(*svgfile, svgfiles))
                continue;
            // check whether original filename is already in:
            filename = get_file_name(svgfile->path);
        }
        svgfile->path_in_3mf = create_unique_3mf_filepath(filename, svgfiles);        
    }
}
}

bool Plater::export_3mf(const boost::filesystem::path& output_path)
{
    if (p->model.objects.empty()) {
        MessageDialog dialog(nullptr, _L("The plater is empty.\nDo you want to save the project?"), _L("Save project"), wxYES_NO);
        if (dialog.ShowModal() != wxID_YES)
            return false;
    }

    wxString path;
    bool export_config = true;
    if (output_path.empty()) {
        path = p->get_export_file(FT_3MF);
        if (path.empty()) { return false; }
    }
    else
        path = from_path(output_path);

    if (!path.Lower().EndsWith(".3mf"))
        return false;

    // take care about private data stored into .3mf
    // modify model
    publish(p->model);

    DynamicPrintConfig cfg = wxGetApp().preset_bundle->full_config_secure();
    const std::string path_u8 = into_u8(path);
    wxBusyCursor wait;
    bool full_pathnames = wxGetApp().app_config->get_bool("export_sources_full_pathnames");
    ThumbnailData thumbnail_data;
    ThumbnailsParams thumbnail_params = { {}, false, true, true, true };
    p->generate_thumbnail(thumbnail_data, THUMBNAIL_SIZE_3MF.first, THUMBNAIL_SIZE_3MF.second, thumbnail_params, Camera::EType::Ortho);
    bool ret = false;
    try
    {
        ret = Slic3r::store_3mf(path_u8.c_str(), &p->model, export_config ? &cfg : nullptr, full_pathnames, &thumbnail_data);
    }
    catch (boost::filesystem::filesystem_error& e)
    {
        const wxString what = _("Unable to save file") + ": " + path_u8 + "\n" + e.code().message();
        MessageDialog dlg(this, what, _("Error saving 3mf file"), wxOK | wxICON_ERROR);
        dlg.ShowModal();
    }
    if (ret) {
        // Success
        BOOST_LOG_TRIVIAL(info) << "3MF file exported to " << path;
        p->set_project_filename(path);
    }
    else {
        // Failure
        const wxString what = GUI::format_wxstr("%1%: %2%", _L("Unable to save file") , path_u8);
        show_error(this, what);
    }
    return ret;
}

void Plater::reload_from_disk()
{
    p->reload_from_disk();
}

void Plater::replace_with_stl()
{
    p->replace_with_stl();
}

void Plater::reload_all_from_disk()
{
    p->reload_all_from_disk();
}

bool Plater::has_toolpaths_to_export() const
{
    return  p->preview->get_canvas3d()->has_toolpaths_to_export();
}

void Plater::export_toolpaths_to_obj() const
{
    if ((printer_technology() != ptFFF) || !is_preview_loaded())
        return;

    wxString path = p->get_export_file(FT_OBJ);
    if (path.empty()) 
        return;
    
    wxBusyCursor wait;
    p->preview->get_canvas3d()->export_toolpaths_to_obj(into_u8(path).c_str());
}

void Plater::reslice()
{
    // There is "invalid data" button instead "slice now"
    if (!is_sliceable(s_print_statuses[s_multiple_beds.get_active_bed()]))
        return;

    // In case SLA gizmo is in editing mode, refuse to continue
    // and notify user that he should leave it first.
    if (canvas3D()->get_gizmos_manager().is_in_editing_mode(true))
        return;

    // Stop the running (and queued) UI jobs and only proceed if they actually
    // get stopped.
    unsigned timeout_ms = 10000;
    if (!stop_queue(this->get_ui_job_worker(), timeout_ms)) {
        BOOST_LOG_TRIVIAL(error) << "Could not stop UI job within "
                                 << timeout_ms << " milliseconds timeout!";
        return;
    }

    if (printer_technology() == ptSLA) {
        for (auto& object : model().objects)
            if (object->sla_points_status == sla::PointsStatus::NoPoints)
                object->sla_points_status = sla::PointsStatus::Generating;
    }

    //FIXME Don't reslice if export of G-code or sending to OctoPrint is running.
    // bitmask of UpdateBackgroundProcessReturnState
    unsigned int state = this->p->update_background_process(true);
    if (state & priv::UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE)
        this->p->view3D->reload_scene(false);
    // If the SLA processing of just a single object's supports is running, restart slicing for the whole object.
    this->p->background_process.set_task(PrintBase::TaskParams());
    // Only restarts if the state is valid.
    this->p->restart_background_process(state | priv::UPDATE_BACKGROUND_PROCESS_FORCE_RESTART);

    if ((state & priv::UPDATE_BACKGROUND_PROCESS_INVALID) != 0)
        return;

    bool clean_gcode_toolpaths = true;
    if (p->background_process.running())
    {
        if (wxGetApp().get_mode() == comSimple)
            p->sidebar->set_btn_label(ActionButtonType::Reslice, _L("Slicing") + dots);
        else
        {
            p->sidebar->set_btn_label(ActionButtonType::Reslice, _L("Slice now"));
            p->show_action_buttons(false);
        }
    }
    else if (!p->background_process.empty() && !p->background_process.idle())
        p->show_action_buttons(true);
    else
        clean_gcode_toolpaths = false;

    if (clean_gcode_toolpaths)
        reset_gcode_toolpaths();

    p->preview->reload_print();
}

void Plater::reslice_until_step_inner(int step, const ModelObject &object, bool postpone_error_messages)
{
    //FIXME Don't reslice if export of G-code or sending to OctoPrint is running.
    // bitmask of UpdateBackgroundProcessReturnState
    unsigned int state = this->p->update_background_process(true, postpone_error_messages);
    if (state & priv::UPDATE_BACKGROUND_PROCESS_REFRESH_SCENE)
        this->p->view3D->reload_scene(false);

    if (this->p->background_process.empty() || (state & priv::UPDATE_BACKGROUND_PROCESS_INVALID))
        // Nothing to do on empty input or invalid configuration.
        return;

    // Limit calculation to the single object only.
    PrintBase::TaskParams task;
    task.single_model_object = object.id();
    // If the background processing is not enabled, calculate supports just for the single instance.
    // Otherwise calculate everything, but start with the provided object.
    if (!this->p->background_processing_enabled()) {
        task.single_model_instance_only = true;
        task.to_object_step = step;
    }
    this->p->background_process.set_task(task);
    // and let the background processing start.
    this->p->restart_background_process(state | priv::UPDATE_BACKGROUND_PROCESS_FORCE_RESTART);
}

void Plater::reslice_FFF_until_step(PrintObjectStep step, const ModelObject &object, bool postpone_error_messages)
{
    this->reslice_until_step_inner(PrintObjectStep(step), object, postpone_error_messages);
}

void Plater::reslice_SLA_until_step(SLAPrintObjectStep step, const ModelObject &object, bool postpone_error_messages)
{
    this->reslice_until_step_inner(SLAPrintObjectStep(step), object, postpone_error_messages);
}

namespace {
bool load_secret(const std::string& id, const std::string& opt, std::string& usr, std::string& psswd)
{
#if wxUSE_SECRETSTORE
    wxSecretStore store = wxSecretStore::GetDefault();
    wxString errmsg;
    if (!store.IsOk(&errmsg)) {
        std::string msg = GUI::format("%1% (%2%).", _u8L("This system doesn't support storing passwords securely"), errmsg);
        BOOST_LOG_TRIVIAL(error) << msg;
        show_error(nullptr, msg);
        return false;
    }
    const wxString service = GUI::format_wxstr(L"%1%/PhysicalPrinter/%2%/%3%", SLIC3R_APP_NAME, id, opt);
    wxString username;
    wxSecretValue password;
    if (!store.Load(service, username, password)) {
        std::string msg(_u8L("Failed to load credentials from the system password store."));
        BOOST_LOG_TRIVIAL(error) << msg;
        show_error(nullptr, msg);
        return false;
    }
    usr = into_u8(username);
    psswd = into_u8(password.GetAsString());
    return true;
#else
    BOOST_LOG_TRIVIAL(error) << "wxUSE_SECRETSTORE not supported. Cannot load password from the system store.";
    return false;
#endif // wxUSE_SECRETSTORE 
}
}


void Plater::printables_to_connect_gcode(const std::string& url)
{
    PrintablesConnectUploadDialog dialog(this, url);
    dialog.ShowModal();

}

std::optional<PrintHostJob> Plater::get_connect_print_host_job(bool multiple_beds) 
{
    assert(p->user_account->is_logged());
    std::string  dialog_msg;
    {
        PrinterPickWebViewDialog dialog(this, dialog_msg, multiple_beds);
        if (dialog.ShowModal() != wxID_OK) {
            return std::nullopt;
        }
    }   
    if (dialog_msg.empty())  {
        show_error(this, _L("Failed to select a printer."));
        return std::nullopt;
    }
    BOOST_LOG_TRIVIAL(debug) << "Message from Printer pick webview: " << dialog_msg;

/*
{
 set_ready: boolean, // uzivatel potvrdil ze je tiskarne ready a muze se tisknout, pouziva se pro tisknout ted a odlozeny tisk
 position: -1 | 0, // -1 = posledni ve fronte, 0 = prvni ve fronte
 wait_until: number | undefined, // timestamp pro odlozeny tisk
 file_name: string, // tady budeme predavat jak se uzivatel rozhodl soubor pojmenovat, kdyz ho neprejmenuje, tak vratime to stejne co nam predtim posle slicer
 printer_uuid: string // uuid vybrane tiskarny
}
*/
    const Preset* selected_printer_preset = &wxGetApp().preset_bundle->printers.get_selected_preset();

    boost::property_tree::ptree ptree;
    const std::string filename = UserAccountUtils::get_keyword_from_json(ptree, dialog_msg, "filename");
    const std::string team_id = UserAccountUtils::get_keyword_from_json(ptree, dialog_msg, "team_id");

    std::string data_subtree = UserAccountUtils::get_print_data_from_json(dialog_msg, "data");
    if (filename.empty() || team_id.empty() || data_subtree.empty()) {
        std::string msg = _u8L("Failed to read response from Prusa Connect server. Upload is cancelled.");
        BOOST_LOG_TRIVIAL(error) << msg;
        BOOST_LOG_TRIVIAL(error) << "Response: " << dialog_msg;
        show_error(this, msg);
        return std::nullopt;
    }


    PhysicalPrinter ph_printer("connect_temp_printer", wxGetApp().preset_bundle->physical_printers.default_config(), *selected_printer_preset);
    ph_printer.config.set_key_value("host_type", new ConfigOptionEnum<PrintHostType>(htPrusaConnectNew));
    // use existing structures to pass data
    ph_printer.config.opt_string("printhost_apikey") = team_id;
    DynamicPrintConfig* physical_printer_config = &ph_printer.config;

    PrintHostJob upload_job(physical_printer_config);
    assert(!upload_job.empty());

    upload_job.upload_data.data_json = data_subtree;
    upload_job.upload_data.upload_path = boost::filesystem::path(filename);

    return upload_job;
}

void Plater::connect_gcode()
{
    if (auto upload_job{get_connect_print_host_job(false)}) {
        p->export_gcode(fs::path(), false, std::move(*upload_job));
    }
}

void Plater::connect_gcode_all() {
    auto optional_upload_job{get_connect_print_host_job(true)};
    if (!optional_upload_job) {
        return;
    }

    // PringHostJob does not have copy constructor.
    // Make a new job from this template for each bed.
    const PrintHostJob &upload_job_template{*optional_upload_job};
    const auto print_host_ptr{dynamic_cast<PrusaConnectNew*>(upload_job_template.printhost.get())};
    if (print_host_ptr == nullptr) {
        throw std::runtime_error{"Sending to connect requires PrusaConnectNew host."};
    }

    const PrusaConnectNew connect{*print_host_ptr};

    std::vector<std::pair< int, std::optional<fs::path> >> paths;

    for (std::size_t print_index{0};  print_index < s_multiple_beds.get_number_of_beds(); ++print_index) {
        const std::unique_ptr<Print> &print{this->get_fff_prints()[print_index]};
        if (!print || !is_sliceable(s_print_statuses[print_index])) {
            paths.emplace_back(print_index, std::nullopt);
            continue;
        }
        // Prevously, filename from Connect FE was taken and used for each gcode file.
        // Now naming is same as in gcode export.
        fs::path default_filename{upload_job_template.upload_data.upload_path};
        this->with_mocked_fff_background_process(
            *print,
            this->p->gcode_results[print_index],
            print_index,
            [&](){
                const auto optional_file{this->get_default_output_file()};
                if (!optional_file) {
                    return;
                }
                if (print_index !=  s_multiple_beds.get_number_of_beds() - 1 || default_filename.empty()) {
                    const fs::path &default_file{*optional_file};
                    default_filename = default_file.filename();
                }
            }
        );

        const fs::path filename_fixed{
            default_filename.stem().string()
            + "_bed"
            + std::to_string(print_index + 1)
            + default_filename.extension().string()
        };
        paths.emplace_back(print_index, filename_fixed);
    }

    BulkExportDialog dialog{paths, _L("Send all to Connect"),  connect.get_unusable_symbols()};
    if (dialog.ShowModal() != wxID_OK) {
        return;
    }
    const std::vector<std::pair<int, std::optional<fs::path>>> output_paths{dialog.get_paths()};

    for (const auto &key_value : output_paths) {
        const int bed_index{key_value.first};
        const std::optional<fs::path> &optional_path{key_value.second};
        if (!optional_path) {
            continue;
        }
        const fs::path &path{*optional_path};

        const std::unique_ptr<Print> &print{this->get_fff_prints()[bed_index]};
        if (!print || print->empty()) {
            continue;
        }
        with_mocked_fff_background_process(
            *print,
            this->p->gcode_results[bed_index],
            bed_index,
            [&](){
                this->p->background_process.set_temp_output_path(bed_index);
                PrintHostJob upload_job;
                upload_job.upload_data = upload_job_template.upload_data;
                upload_job.printhost = std::make_unique<PrusaConnectNew>(connect);
                upload_job.cancelled = upload_job_template.cancelled;
                upload_job.upload_data.upload_path = path;
                this->p->background_process.prepare_upload(upload_job);
            }
        );
    }
}

void Plater::send_gcode()
{
    // if physical_printer is selected, send gcode for this printer
    DynamicPrintConfig* physical_printer_config = wxGetApp().preset_bundle->physical_printers.get_selected_printer_config();
    if (! physical_printer_config || p->model.objects.empty())
        return;

    // Passwords and API keys
    // "stored" indicates data are stored secretly, load them from store.
    std::string printer_name = wxGetApp().preset_bundle->physical_printers.get_selected_printer().name;
    if (physical_printer_config->opt_string("printhost_password") == "stored" && physical_printer_config->opt_string("printhost_password") == "stored") {
        std::string username;
        std::string password;
        if (load_secret(printer_name, "printhost_password", username, password)) {
            if (!username.empty())
                physical_printer_config->opt_string("printhost_user") = username;
            if (!password.empty())
                physical_printer_config->opt_string("printhost_password") = password;
        }
        else {
            physical_printer_config->opt_string("printhost_user") = std::string();
            physical_printer_config->opt_string("printhost_password") = std::string();
        }
    }
    /*
    if (physical_printer_config->opt_string("printhost_apikey") == "stored") {
        std::string username;
        std::string password;
        if (load_secret(printer_name, "printhost_apikey", username, password) && !password.empty())
            physical_printer_config->opt_string("printhost_apikey") = password;
        else
            physical_printer_config->opt_string("printhost_apikey") = std::string();
    }
    */
    send_gcode_inner(physical_printer_config);
}

std::string Plater::get_upload_filename()
{
    // Obtain default output path
    fs::path default_output_file;
    try {
        // Update the background processing, so that the placeholder parser will get the correct values for the ouput file template.
        // Also if there is something wrong with the current configuration, a pop-up dialog will be shown and the export will not be performed.
        unsigned int state = this->p->update_restart_background_process(false, false);
        if (state & priv::UPDATE_BACKGROUND_PROCESS_INVALID)
            return {};
        default_output_file = this->p->background_process.output_filepath_for_project(into_path(get_project_filename(".3mf")));
    }
    catch (const Slic3r::PlaceholderParserError& ex) {
        // Show the error with monospaced font.
        show_error(this, ex.what(), true);
        return {};
    }
    catch (const std::exception& ex) {
        show_error(this, ex.what(), false);
        return {};
    }
    default_output_file = fs::path(Slic3r::fold_utf8_to_ascii(default_output_file.string()));

    return default_output_file.filename().string();
}

void Plater::send_gcode_inner(DynamicPrintConfig* physical_printer_config)
{
    PrintHostJob upload_job(physical_printer_config);
    if (upload_job.empty())
        return;

    // Obtain default output path
    fs::path default_output_file;
    try {
        // Update the background processing, so that the placeholder parser will get the correct values for the ouput file template.
        // Also if there is something wrong with the current configuration, a pop-up dialog will be shown and the export will not be performed.
        unsigned int state = this->p->update_restart_background_process(false, false);
        if (state & priv::UPDATE_BACKGROUND_PROCESS_INVALID)
            return;
        default_output_file = this->p->background_process.output_filepath_for_project(into_path(get_project_filename(".3mf")));
    } catch (const Slic3r::PlaceholderParserError& ex) {
        // Show the error with monospaced font.
        show_error(this, ex.what(), true);
        return;
    } catch (const std::exception& ex) {
        show_error(this, ex.what(), false);
        return;
    }
    default_output_file = fs::path(Slic3r::fold_utf8_to_ascii(default_output_file.string()));

    // Repetier specific: Query the server for the list of file groups.
    wxArrayString groups;
    {
        wxBusyCursor wait;
        upload_job.printhost->get_groups(groups);
    }
    // PrusaLink specific: Query the server for the list of file groups.
    wxArrayString storage_paths;
    wxArrayString storage_names;
    {
        wxBusyCursor wait;
        try {
            upload_job.printhost->get_storage(storage_paths, storage_names);
        } catch (const Slic3r::IOError& ex) {
            show_error(this, ex.what(), false);
            return;
        }
    }

    PrintHostSendDialog dlg(default_output_file, upload_job.printhost->get_post_upload_actions(), groups, storage_paths, storage_names);
    if (dlg.ShowModal() == wxID_OK) {

        if (printer_technology() == ptFFF) {
            const std::string ext = boost::algorithm::to_lower_copy(dlg.filename().extension().string());
            const bool        binary_output = wxGetApp().preset_bundle->printers.get_edited_preset().config.opt_bool("binary_gcode") &&
                                       wxGetApp().app_config->get_bool("use_binary_gcode_when_supported");
            const wxString error_str = check_binary_vs_ascii_gcode_extension(printer_technology(), ext, binary_output);
            if (! error_str.IsEmpty()) {
                ErrorDialog(this, error_str, t_kill_focus([](const std::string& key) -> void { wxGetApp().jump_to_option(key); })).ShowModal();
                return;
            }
        }

        upload_job.upload_data.upload_path = dlg.filename();
        upload_job.upload_data.post_action = dlg.post_action();
        upload_job.upload_data.group       = dlg.group();
        upload_job.upload_data.storage     = dlg.storage();

        // Show "Is printer clean" dialog for PrusaConnect - Upload and print.
        if (std::string(upload_job.printhost->get_name()) == "PrusaConnect" && upload_job.upload_data.post_action == PrintHostPostUploadAction::StartPrint) {
            GUI::MessageDialog dlg(nullptr, _L("Is the printer ready? Is the print sheet in place, empty and clean?"), _L("Upload and Print"), wxOK | wxCANCEL);
            if (dlg.ShowModal() != wxID_OK)
                return;
        }

        p->export_gcode(fs::path(), false, std::move(upload_job));
    }

}

// Called when the Eject button is pressed.
void Plater::eject_drive()
{
    wxBusyCursor wait;
	wxGetApp().removable_drive_manager()->eject_drive();
}

void Plater::take_snapshot(const std::string &snapshot_name) { p->take_snapshot(snapshot_name); }
void Plater::take_snapshot(const wxString &snapshot_name) { p->take_snapshot(snapshot_name); }
void Plater::take_snapshot(const std::string &snapshot_name, UndoRedo::SnapshotType snapshot_type) { p->take_snapshot(snapshot_name, snapshot_type); }
void Plater::take_snapshot(const wxString &snapshot_name, UndoRedo::SnapshotType snapshot_type) { p->take_snapshot(snapshot_name, snapshot_type); }
void Plater::suppress_snapshots() { p->suppress_snapshots(); }
void Plater::allow_snapshots() { p->allow_snapshots(); }
void Plater::undo() { p->undo(); }
void Plater::redo() { p->redo(); }
void Plater::undo_to(int selection)
{
    if (selection == 0) {
        p->undo();
        return;
    }

    const int idx = p->get_active_snapshot_index() - selection - 1;
    p->undo_redo_to(p->undo_redo_stack().snapshots()[idx].timestamp);
}
void Plater::redo_to(int selection)
{
    if (selection == 0) {
        p->redo();
        return;
    }

    const int idx = p->get_active_snapshot_index() + selection + 1;
    p->undo_redo_to(p->undo_redo_stack().snapshots()[idx].timestamp);
}
bool Plater::undo_redo_string_getter(const bool is_undo, int idx, const char** out_text)
{
    const std::vector<UndoRedo::Snapshot>& ss_stack = p->undo_redo_stack().snapshots();
    const int idx_in_ss_stack = p->get_active_snapshot_index() + (is_undo ? -(++idx) : idx);

    if (0 < idx_in_ss_stack && (size_t)idx_in_ss_stack < ss_stack.size() - 1) {
        *out_text = ss_stack[idx_in_ss_stack].name.c_str();
        return true;
    }

    return false;
}

void Plater::undo_redo_topmost_string_getter(const bool is_undo, std::string& out_text)
{
    const std::vector<UndoRedo::Snapshot>& ss_stack = p->undo_redo_stack().snapshots();
    const int idx_in_ss_stack = p->get_active_snapshot_index() + (is_undo ? -1 : 0);

    if (0 < idx_in_ss_stack && (size_t)idx_in_ss_stack < ss_stack.size() - 1) {
        out_text = ss_stack[idx_in_ss_stack].name;
        return;
    }

    out_text = "";
}

bool Plater::update_filament_colors_in_full_config()
{
    // There is a case, when we use filament_color instead of extruder_color (when extruder_color == "").
    // Thus plater config option "filament_colour" should be filled with filament_presets values.
    // Otherwise, on 3dScene will be used last edited filament color for all volumes with extruder_color == "".
    const auto& extruders_filaments = wxGetApp().preset_bundle->extruders_filaments;
    if (extruders_filaments.size() == 1 || !p->config->has("filament_colour"))
        return false;

    const PresetCollection& filaments = wxGetApp().preset_bundle->filaments;
    std::vector<std::string> filament_colors;
    filament_colors.reserve(extruders_filaments.size());

    for (const auto& extr_filaments : extruders_filaments)
        filament_colors.push_back(filaments.find_preset(extr_filaments.get_selected_preset_name(), true)->config.opt_string("filament_colour", (unsigned)0));

    p->config->option<ConfigOptionStrings>("filament_colour")->values = filament_colors;
    return true;
}

void Plater::on_config_change(const DynamicPrintConfig &config)
{
    bool update_scheduled = false;
    bool bed_shape_changed = false;
    for (auto opt_key : p->config->diff(config)) {
        if (opt_key == "filament_colour") {
            update_scheduled = true; // update should be scheduled (for update 3DScene) #2738

            if (update_filament_colors_in_full_config()) {
                p->sidebar->obj_list()->update_extruder_colors();
                continue;
            }
        }
        if (opt_key == "material_colour") {
            update_scheduled = true; // update should be scheduled (for update 3DScene)
        }
        
        p->config->set_key_value(opt_key, config.option(opt_key)->clone());
        if (opt_key == "printer_technology") {
            const PrinterTechnology printer_technology = config.opt_enum<PrinterTechnology>(opt_key);
            this->set_printer_technology(printer_technology);
            p->sidebar->show_sliced_info_sizer(false);
            p->reset_gcode_toolpaths();
            p->view3D->get_canvas3d()->set_sla_view_type(GLCanvas3D::ESLAViewType::Original);
            p->preview->get_canvas3d()->reset_volumes();
        }
        else if (opt_key == "bed_shape" || opt_key == "bed_custom_texture" || opt_key == "bed_custom_model") {
            bed_shape_changed = true;
            update_scheduled = true;
        }
        else if (boost::starts_with(opt_key, "wipe_tower") ||
            // opt_key == "filament_minimal_purge_on_wipe_tower" // ? #ys_FIXME
            opt_key == "single_extruder_multi_material") {
            update_scheduled = true;
        }
        else if(opt_key == "variable_layer_height") {
            if (p->config->opt_bool("variable_layer_height") != true) {
                p->view3D->enable_layers_editing(false);
                p->view3D->set_as_dirty();
            }
        }
        else if(opt_key == "extruder_colour") {
            update_scheduled = true;
            p->sidebar->obj_list()->update_extruder_colors();
        }
        else if (opt_key == "max_print_height") {
            bed_shape_changed = true;
            update_scheduled = true;
        }
        else if (opt_key == "printer_model") {
            p->reset_gcode_toolpaths();
            // update to force bed selection(for texturing)
            bed_shape_changed = true;
            update_scheduled = true;
        }
    }

    if (bed_shape_changed)
        set_bed_shape();

    if (update_scheduled)
        update();

    if (p->main_frame->is_loaded())
        this->p->schedule_background_process();
}

void Plater::set_bed_shape() const
{
    set_bed_shape(p->config->option<ConfigOptionPoints>("bed_shape")->values,
        p->config->option<ConfigOptionFloat>("max_print_height")->value,
        p->config->option<ConfigOptionString>("bed_custom_texture")->value,
        p->config->option<ConfigOptionString>("bed_custom_model")->value);
}

void Plater::set_bed_shape(const Pointfs& shape, const double max_print_height, const std::string& custom_texture, const std::string& custom_model, bool force_as_custom) const
{
    p->set_bed_shape(shape, max_print_height, custom_texture, custom_model, force_as_custom);
}

void Plater::set_default_bed_shape() const
{
    set_bed_shape({ { 0.0, 0.0 }, { 200.0, 0.0 }, { 200.0, 200.0 }, { 0.0, 200.0 } }, 0.0, {}, {}, true);
}

void Plater::force_filament_colors_update()
{
    bool update_scheduled = false;
    DynamicPrintConfig* config = p->config;

    const auto& extruders_filaments = wxGetApp().preset_bundle->extruders_filaments;
    if (extruders_filaments.size() > 1 && 
        p->config->option<ConfigOptionStrings>("filament_colour")->values.size() == extruders_filaments.size())
    {
        std::vector<std::string> filament_colors;
        filament_colors.reserve(extruders_filaments.size());

        for (const auto& extr_filaments : extruders_filaments)
            filament_colors.push_back(extr_filaments.get_selected_preset()->config.opt_string("filament_colour", (unsigned)0));

        if (config->option<ConfigOptionStrings>("filament_colour")->values != filament_colors) {
            config->option<ConfigOptionStrings>("filament_colour")->values = filament_colors;
            update_scheduled = true;
        }
    }

    if (update_scheduled) {
        update();
        p->sidebar->obj_list()->update_extruder_colors();
    }

    if (p->main_frame->is_loaded())
        this->p->schedule_background_process();
}

void Plater::force_filament_cb_update()
{
    // Update visibility for templates presets according to app_config
    PresetCollection& filaments = wxGetApp().preset_bundle->filaments;
    AppConfig& config = *wxGetApp().app_config;
    for (Preset& preset : filaments)
        preset.set_visible_from_appconfig(config);
    wxGetApp().preset_bundle->update_compatible(PresetSelectCompatibleType::Never, PresetSelectCompatibleType::OnlyIfWasCompatible);

    // Update preset comboboxes on sidebar and filaments tab
    p->sidebar->update_presets(Preset::TYPE_FILAMENT);

    TabFilament* tab = dynamic_cast<TabFilament*>(wxGetApp().get_tab(Preset::TYPE_FILAMENT));
    tab->select_preset(wxGetApp().preset_bundle->extruders_filaments[tab->get_active_extruder()].get_selected_preset_name());
}

void Plater::force_print_bed_update()
{
	// Fill in the printer model key with something which cannot possibly be valid, so that Plater::on_config_change() will update the print bed
	// once a new Printer profile config is loaded.
	p->config->opt_string("printer_model", true) = "\x01\x00\x01";
}

void Plater::on_activate(bool active)
{
    if (active) {
	    this->p->show_delayed_error_message();
    }
}

// Get vector of extruder colors considering filament color, if extruder color is undefined.
std::vector<std::string> Plater::get_extruder_color_strings_from_plater_config(const GCodeProcessorResult* const result) const
{
    if (wxGetApp().is_gcode_viewer() && result != nullptr)
        return result->extruder_colors;
    else {
        const Slic3r::DynamicPrintConfig* config = &wxGetApp().preset_bundle->printers.get_edited_preset().config;
        std::vector<std::string> extruder_colors;
        if (!config->has("extruder_colour")) // in case of a SLA print
            return extruder_colors;

        extruder_colors = (config->option<ConfigOptionStrings>("extruder_colour"))->values;
        if (!wxGetApp().plater())
            return extruder_colors;

        const std::vector<std::string>& filament_colours = (p->config->option<ConfigOptionStrings>("filament_colour"))->values;
        for (size_t i = 0; i < extruder_colors.size(); ++i)
            if (extruder_colors[i] == "" && i < filament_colours.size())
                extruder_colors[i] = filament_colours[i];

        return extruder_colors;
    }
}

/* Get vector of colors used for rendering of a Preview scene in "Color print" mode
 * It consists of extruder colors and colors, saved in model.custom_gcode_per_print_z
 */
std::vector<std::string> Plater::get_color_strings_for_color_print(const GCodeProcessorResult* const result) const
{
    std::vector<std::string> colors = get_extruder_color_strings_from_plater_config(result);
    colors.reserve(colors.size() + p->model.custom_gcode_per_print_z().gcodes.size());

    if (wxGetApp().is_gcode_viewer() && result != nullptr) {
        for (const CustomGCode::Item& code : result->custom_gcode_per_print_z) {
            if (code.type == CustomGCode::ColorChange)
                colors.emplace_back(code.color);
        }
    }
    else {
        for (const CustomGCode::Item& code : p->model.custom_gcode_per_print_z().gcodes) {
            if (code.type == CustomGCode::ColorChange)
                colors.emplace_back(code.color);
        }
    }

    return colors;
}

std::vector<ColorRGBA> Plater::get_extruder_colors_from_plater_config() const
{
    std::vector<std::string> colors = get_extruder_color_strings_from_plater_config();
    std::vector<ColorRGBA> ret;
    decode_colors(colors, ret);
    return ret;
}

std::vector<ColorRGBA> Plater::get_colors_for_color_print() const
{
    std::vector<std::string> colors = get_color_strings_for_color_print();
    std::vector<ColorRGBA> ret;
    decode_colors(colors, ret);
    return ret;
}

wxString Plater::get_project_filename(const wxString& extension) const
{
    return p->get_project_filename(extension);
}

void Plater::set_project_filename(const wxString& filename)
{
    p->set_project_filename(filename);
}

bool Plater::is_export_gcode_scheduled() const
{
    return p->background_process.is_export_scheduled();
}

const Selection &Plater::get_selection() const
{
    return p->get_selection();
}

int Plater::get_selected_object_idx()
{
    return p->get_selected_object_idx();
}

bool Plater::is_single_full_object_selection() const
{
    return p->get_selection().is_single_full_object();
}

GLCanvas3D* Plater::canvas3D()
{
    return p->view3D->get_canvas3d();
}

const GLCanvas3D* Plater::canvas3D() const
{
    return p->view3D->get_canvas3d();
}

GLCanvas3D* Plater::get_current_canvas3D()
{
    return p->get_current_canvas3D();
}

void Plater::render_sliders(GLCanvas3D& canvas)
{
    p->render_sliders(canvas);
}

static std::string concat_strings(const std::set<std::string> &strings,
                                  const std::string &delim = "\n")
{
    return std::accumulate(
        strings.begin(), strings.end(), std::string(""),
        [delim](const std::string &s, const std::string &name) {
            return s + name + delim;
        });
}

void Plater::arrange(bool current_bed_only)
{
    ArrangeSelectionMode mode;
    if (current_bed_only)
        mode = wxGetKeyState(WXK_SHIFT) ? ArrangeSelectionMode::CurrentBedSelectionOnly : ArrangeSelectionMode::CurrentBedFull;
    else
        mode = wxGetKeyState(WXK_SHIFT) ? ArrangeSelectionMode::SelectionOnly : ArrangeSelectionMode::Full;

    const bool sequential = p->config->has("complete_objects") && p->config->opt_bool("complete_objects") && p->printer_technology == ptFFF;

    if (p->can_arrange()) {
        if (sequential) {
            try {
                replace_job(this->get_ui_job_worker(), std::make_unique<SeqArrangeJob>(this->model(), *p->config, current_bed_only));
            } catch (const ExceptionCannotAttemptSeqArrange&) {
                ErrorDialog dlg(this, _L("Sequential arrange for a single bed is only allowed when all instances of the affected objects are on the same bed."), false);
                dlg.ShowModal();
            }
        }
        else {
            auto& w = get_ui_job_worker();
            arrange(w, mode);
        }
    }
}

void Plater::arrange(Worker &w, const ArrangeSelectionMode &mode)
{
    arr2::Scene arrscene{build_scene(*this, mode)};

    ArrangeJob2::Callbacks cbs;

    cbs.on_processed = [this](arr2::ArrangeTaskBase &t) {
        p->take_snapshot(_L("Arrange"));
    };

    cbs.on_finished = [this](arr2::ArrangeTaskResult &t) {
        std::set<std::string> names;

        auto collect_unarranged = [this, &names](const arr2::TrafoOnlyArrangeItem &itm) {
            if (!arr2::is_arranged(itm)) {
                std::optional<ObjectID> id = arr2::retrieve_id(itm);
                if (id) {
                    auto [mi, pos] = arr2::find_instance_by_id(p->model, *id);
                    if (mi && mi->get_object()) {
                        names.insert(mi->get_object()->name);
                    }
                }
            }
        };

        for (const arr2::TrafoOnlyArrangeItem &itm : t.items)
            collect_unarranged(itm);

        if (!names.empty()) {
            get_notification_manager()->push_notification(
                GUI::format(_L("Arrangement ignored the following objects which "
                               "can't fit into a single bed:\n%s"),
                            concat_strings(names, "\n")));
        }

        s_multiple_beds.update_shown_beds(model(), build_volume());
        canvas3D()->check_volumes_outside_state();

        update(static_cast<unsigned int>(UpdateParams::FORCE_FULL_SCREEN_REFRESH));
        wxGetApp().obj_manipul()->set_dirty();
    };

    replace_job(w, std::make_unique<ArrangeJob2>(std::move(arrscene), cbs));
}

void Plater::set_current_canvas_as_dirty()
{
    p->set_current_canvas_as_dirty();
}

void Plater::unbind_canvas_event_handlers()
{
    p->unbind_canvas_event_handlers();
}

void Plater::reset_canvas_volumes()
{
    p->reset_canvas_volumes();
}

PrinterTechnology Plater::printer_technology() const
{
    return p->printer_technology;
}

const DynamicPrintConfig * Plater::config() const { return p->config; }

bool Plater::set_printer_technology(PrinterTechnology printer_technology)
{
    p->printer_technology = printer_technology;
    bool ret = p->background_process.select_technology(printer_technology);
    if (ret) {
        s_print_statuses.fill(PrintStatus::idle);
        // Update the active presets.
    }
    //FIXME for SLA synchronize
    //p->background_process.apply(Model)!

    if (printer_technology == ptSLA) {
        for (ModelObject* model_object : p->model.objects) {
            model_object->ensure_on_bed();
        }
    }

    p->label_btn_export = printer_technology == ptFFF ? L("Export G-code") : L("Export");
    p->label_btn_send   = printer_technology == ptFFF ? L("Send G-code")   : L("Send to printer");

    if (wxGetApp().mainframe != nullptr)
        wxGetApp().mainframe->update_menubar();

    p->update_main_toolbar_tooltips();

    p->notification_manager->set_fff(printer_technology == ptFFF);
    p->notification_manager->set_slicing_progress_hidden();

    return ret;
}

void Plater::clear_before_change_volume(ModelVolume &mv, const std::string &notification_msg) {
    // When we change the geometry of the volume, we remove any custom supports/seams/multi-material/fuzzy skin painting.
    if (const bool paint_removed = !mv.supported_facets.empty() || !mv.seam_facets.empty() || !mv.mm_segmentation_facets.empty() || !mv.fuzzy_skin_facets.empty(); paint_removed) {
        mv.supported_facets.reset();
        mv.seam_facets.reset();
        mv.mm_segmentation_facets.reset();
        mv.fuzzy_skin_facets.reset();

        get_notification_manager()->push_notification(
                NotificationType::CustomSupportsAndSeamRemovedAfterRepair,
                NotificationManager::NotificationLevel::PrintInfoNotificationLevel,
                notification_msg);
    }
}

void Plater::clear_before_change_mesh(int obj_idx, const std::string &notification_msg)
{
    ModelObject* mo = model().objects[obj_idx];

    // If there are custom supports/seams/mm segmentation/fuzzy skin, remove them. Fixed mesh
    // may be different and they would make no sense.
    bool paint_removed = false;
    for (ModelVolume *mv : mo->volumes) {
        paint_removed |= !mv->supported_facets.empty() || !mv->seam_facets.empty() || !mv->mm_segmentation_facets.empty() || !mv->fuzzy_skin_facets.empty();
        mv->supported_facets.reset();
        mv->seam_facets.reset();
        mv->mm_segmentation_facets.reset();
        mv->fuzzy_skin_facets.reset();
    }
    if (paint_removed) {
        // snapshot_time is captured by copy so the lambda knows where to undo/redo to.
        get_notification_manager()->push_notification(
                    NotificationType::CustomSupportsAndSeamRemovedAfterRepair,
                    NotificationManager::NotificationLevel::PrintInfoNotificationLevel,
                    notification_msg);
//                    _u8L("Undo the repair"),
//                    [this, snapshot_time](wxEvtHandler*){
//                        // Make sure the snapshot is still available and that
//                        // we are in the main stack and not in a gizmo-stack.
//                        if (undo_redo_stack().has_undo_snapshot(snapshot_time)
//                         && q->canvas3D()->get_gizmos_manager().get_current() == nullptr)
//                            undo_redo_to(snapshot_time);
//                        else
//                            notification_manager->push_notification(
//                                NotificationType::CustomSupportsAndSeamRemovedAfterRepair,
//                                NotificationManager::NotificationLevel::RegularNotificationLevel,
//                                _u8L("Cannot undo to before the mesh repair!"));
//                        return true;
//                    });
    }
}

void Plater::changed_mesh(int obj_idx)
{
    ModelObject* mo = model().objects[obj_idx];
    if (p->printer_technology == ptSLA)
        sla::reproject_points_and_holes(mo);
    update();
    p->object_list_changed();
    p->schedule_background_process();
}

void Plater::changed_object(ModelObject &object){
    assert(object.get_model() == &p->model); // is object from same model?
    object.invalidate_bounding_box();

    // recenter and re - align to Z = 0
    object.ensure_on_bed(p->printer_technology != ptSLA);

    if (p->printer_technology == ptSLA) {
        // Update the SLAPrint from the current Model, so that the reload_scene()
        // pulls the correct data, update the 3D scene.
        p->update_restart_background_process(true, false);
    } else
        p->view3D->reload_scene(false);

    // update print
    p->schedule_background_process();
        
    // Check outside bed
    get_current_canvas3D()->requires_check_outside_state();
}

void Plater::changed_object(int obj_idx)
{
    if (obj_idx < 0)
        return;
    ModelObject *object = p->model.objects[obj_idx];
    if (object == nullptr)
        return;
    changed_object(*object);
}

void Plater::changed_objects(const std::vector<size_t>& object_idxs)
{
    if (object_idxs.empty())
        return;

    for (size_t obj_idx : object_idxs) {
        if (obj_idx < p->model.objects.size()) {
            if (p->model.objects[obj_idx]->min_z() >= SINKING_Z_THRESHOLD)
                // re - align to Z = 0
                p->model.objects[obj_idx]->ensure_on_bed();
        }
    }
    if (this->p->printer_technology == ptSLA) {
        // Update the SLAPrint from the current Model, so that the reload_scene()
        // pulls the correct data, update the 3D scene.
        this->p->update_restart_background_process(true, false);
    }
    else {
        p->view3D->reload_scene(false);
        p->view3D->get_canvas3d()->update_instance_printable_state_for_objects(object_idxs);
    }

    // update print
    this->p->schedule_background_process();
}

void Plater::schedule_background_process(bool schedule/* = true*/)
{
    if (schedule)
        this->p->schedule_background_process();

    this->p->suppressed_backround_processing_update = false;
}

bool Plater::is_background_process_update_scheduled() const
{
    return this->p->background_process_timer.IsRunning();
}

void Plater::suppress_background_process(const bool stop_background_process)
{
    if (stop_background_process)
        this->p->background_process_timer.Stop();

    this->p->suppressed_backround_processing_update = true;
}

void Plater::mirror(Axis axis)      { p->mirror(axis); }
void Plater::split_object()         { p->split_object(); }
void Plater::split_volume()         { p->split_volume(); }
void Plater::update_menus()         { p->menus.update(); }
void Plater::show_action_buttons(const bool ready_to_slice) const   { p->show_action_buttons(ready_to_slice); }
void Plater::show_action_buttons() const                            { p->show_action_buttons(p->ready_to_slice); }

void Plater::show_autoslicing_action_buttons() const { p->show_autoslicing_action_buttons(); };

void Plater::copy_selection_to_clipboard()
{
    // At first try to copy selected values to the ObjectList's clipboard
    // to check if Settings or Layers are selected in the list
    // and then copy to 3DCanvas's clipboard if not
    if (can_copy_to_clipboard() && !p->sidebar->obj_list()->copy_to_clipboard())
        p->view3D->get_canvas3d()->get_selection().copy_to_clipboard();
}

void Plater::paste_from_clipboard()
{
    if (!can_paste_from_clipboard())
        return;

    Plater::TakeSnapshot snapshot(this, _L("Paste From Clipboard"));

    // At first try to paste values from the ObjectList's clipboard
    // to check if Settings or Layers were copied
    // and then paste from the 3DCanvas's clipboard if not
    if (!p->sidebar->obj_list()->paste_from_clipboard())
        p->view3D->get_canvas3d()->get_selection().paste_from_clipboard();
}

void Plater::msw_rescale()
{
    p->preview->msw_rescale();

    p->view3D->get_canvas3d()->msw_rescale();

    p->sidebar->msw_rescale();

    Layout();
    GetParent()->Layout();
}

void Plater::sys_color_changed()
{
    p->sidebar->sys_color_changed();

    p->menus.sys_color_changed();

    Layout();
    GetParent()->Layout();
}

bool Plater::init_view_toolbar()
{
    return p->init_view_toolbar();
}

void Plater::enable_view_toolbar(bool enable)
{
    p->view_toolbar.set_enabled(enable);
}

bool Plater::init_collapse_toolbar()
{
    return p->init_collapse_toolbar();
}

void Plater::enable_collapse_toolbar(bool enable)
{
    p->collapse_toolbar.set_enabled(enable);
}

const Camera& Plater::get_camera() const
{
    return p->camera;
}

Camera& Plater::get_camera()
{
    return p->camera;
}

#if ENABLE_ENVIRONMENT_MAP
void Plater::init_environment_texture()
{
    if (p->environment_texture.get_id() == 0)
        p->environment_texture.load_from_file(resources_dir() + "/icons/Pmetal_001.png", false, GLTexture::SingleThreaded, false);
}

unsigned int Plater::get_environment_texture_id() const
{
    return p->environment_texture.get_id();
}
#endif // ENABLE_ENVIRONMENT_MAP

const BuildVolume& Plater::build_volume() const
{
    return p->bed.build_volume();
}

const GLToolbar& Plater::get_view_toolbar() const
{
    return p->view_toolbar;
}

GLToolbar& Plater::get_view_toolbar()
{
    return p->view_toolbar;
}

const GLToolbar& Plater::get_collapse_toolbar() const
{
    return p->collapse_toolbar;
}

GLToolbar& Plater::get_collapse_toolbar()
{
    return p->collapse_toolbar;
}

void Plater::set_preview_layers_slider_values_range(int bottom, int top)
{
    p->set_preview_layers_slider_values_range(bottom, top);
}

void Plater::update_preview_moves_slider(std::optional<int> visible_range_min, std::optional<int> visible_range_max)
{
    p->update_preview_moves_slider(visible_range_min, visible_range_max);
}

void Plater::enable_preview_moves_slider(bool enable)
{
    p->enable_preview_moves_slider(enable);
}

void Plater::reset_gcode_toolpaths()
{
    p->reset_gcode_toolpaths();
}

const Mouse3DController& Plater::get_mouse3d_controller() const
{
    return p->mouse3d_controller;
}

Mouse3DController& Plater::get_mouse3d_controller()
{
    return p->mouse3d_controller;
}

NotificationManager * Plater::get_notification_manager()
{
    return p->notification_manager.get();
}

const NotificationManager * Plater::get_notification_manager() const
{
    return p->notification_manager.get();
}

UserAccount* Plater::get_user_account()
{
    return p->user_account.get();
}

const UserAccount* Plater::get_user_account() const
{
    return p->user_account.get();
}

void Plater::toggle_remember_user_account_session()
{
    if (p->user_account)
        p->user_account->toggle_remember_session();
}

void Plater::act_with_user_account()
{
    if (p->user_account) {
        if (p->user_account->is_logged())
            p->user_account->do_logout();
        else {
            p->user_account->do_login();
            if (!wxGetApp().app_config->has("show_login_button"))
                wxGetApp().app_config->set("show_login_button", "1");
        }
    }
}

void Plater::init_notification_manager()
{
    p->init_notification_manager();
}

bool Plater::can_delete() const { return p->can_delete(); }
bool Plater::can_delete_all() const { return p->can_delete_all(); }
bool Plater::can_increase_instances() const { return p->can_increase_instances(); }
bool Plater::can_decrease_instances(int obj_idx/* = -1*/) const { return p->can_decrease_instances(obj_idx); }
bool Plater::can_set_instance_to_object() const { return p->can_set_instance_to_object(); }
bool Plater::can_fix_through_winsdk() const { return p->can_fix_through_winsdk(); }
bool Plater::can_simplify() const { return p->can_simplify(); }
bool Plater::can_split_to_objects() const { return p->can_split_to_objects(); }
bool Plater::can_split_to_volumes() const { return p->can_split_to_volumes(); }
bool Plater::can_arrange() const { return p->can_arrange(); }
bool Plater::can_layers_editing() const { return p->can_layers_editing(); }
bool Plater::can_paste_from_clipboard() const
{
    const Selection& selection = p->view3D->get_canvas3d()->get_selection();
    const Selection::Clipboard& clipboard = selection.get_clipboard();

    if (clipboard.is_empty() && p->sidebar->obj_list()->clipboard_is_empty())
        return false;

    if ((wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptSLA) && !clipboard.is_sla_compliant())
        return false;

    Selection::EMode mode = clipboard.get_mode();
    if ((mode == Selection::Volume) && !selection.is_from_single_instance())
        return false;

    if ((mode == Selection::Instance) && (selection.get_mode() != Selection::Instance))
        return false;

    return true;
}

bool Plater::can_copy_to_clipboard() const
{
    if (is_selection_empty())
        return false;

    const Selection& selection = p->view3D->get_canvas3d()->get_selection();
    if ((wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptSLA) && !selection.is_sla_compliant())
        return false;

    return true;
}

bool Plater::can_undo() const { return p->undo_redo_stack().has_undo_snapshot(); }
bool Plater::can_redo() const { return p->undo_redo_stack().has_redo_snapshot(); }
bool Plater::can_reload_from_disk() const { return p->can_reload_from_disk(); }
bool Plater::can_replace_with_stl() const { return p->can_replace_with_stl(); }
bool Plater::can_mirror() const { return p->can_mirror(); }
bool Plater::can_split(bool to_objects) const { return p->can_split(to_objects); }
bool Plater::can_scale_to_print_volume() const { return p->can_scale_to_print_volume(); }

const UndoRedo::Stack& Plater::undo_redo_stack_main() const { return p->undo_redo_stack_main(); }
void Plater::clear_undo_redo_stack_main() { p->undo_redo_stack_main().clear(); }
void Plater::enter_gizmos_stack() { p->enter_gizmos_stack(); }
void Plater::leave_gizmos_stack() { p->leave_gizmos_stack(); }
bool Plater::inside_snapshot_capture() { return p->inside_snapshot_capture(); }

void Plater::toggle_render_statistic_dialog()
{
    p->show_render_statistic_dialog = !p->show_render_statistic_dialog;
}

bool Plater::is_render_statistic_dialog_visible() const
{
    return p->show_render_statistic_dialog;
}

void Plater::set_keep_current_preview_type(bool value)
{
    p->preview->set_keep_current_preview_type(value);
}

Plater::TakeSnapshot::TakeSnapshot(Plater *plater, const std::string &snapshot_name)
: TakeSnapshot(plater, from_u8(snapshot_name)) {}
Plater::TakeSnapshot::TakeSnapshot(Plater* plater, const std::string& snapshot_name, UndoRedo::SnapshotType snapshot_type)
: TakeSnapshot(plater, from_u8(snapshot_name), snapshot_type) {}


// Wrapper around wxWindow::PopupMenu to suppress error messages popping out while tracking the popup menu.
bool Plater::PopupMenu(wxMenu *menu, const wxPoint& pos)
{
	// Don't want to wake up and trigger reslicing while tracking the pop-up menu.
	SuppressBackgroundProcessingUpdate sbpu;
	// When tracking a pop-up menu, postpone error messages from the slicing result.
	m_tracking_popup_menu = true;
    bool out = this->wxPanel::PopupMenu(menu, pos);
	m_tracking_popup_menu = false;
	if (! m_tracking_popup_menu_error_message.empty()) {
        // Don't know whether the CallAfter is necessary, but it should not hurt.
        // The menus likely sends out some commands, so we may be safer if the dialog is shown after the menu command is processed.
		wxString message = std::move(m_tracking_popup_menu_error_message);
        wxTheApp->CallAfter([message, this]() { show_error(this, message); });
        m_tracking_popup_menu_error_message.clear();
    }
	return out;
}
void Plater::bring_instance_forward()
{
    p->bring_instance_forward();
}

std::vector<std::unique_ptr<Print>>& Plater::get_fff_prints()
{
    return p->fff_prints;
}

const std::vector<GCodeProcessorResult>& Plater::get_gcode_results() const
{
    return p->gcode_results;
}

wxMenu* Plater::object_menu()           { return p->menus.object_menu();            }
wxMenu* Plater::part_menu()             { return p->menus.part_menu();              }
wxMenu* Plater::text_part_menu()        { return p->menus.text_part_menu();         }
wxMenu* Plater::svg_part_menu()         { return p->menus.svg_part_menu();          }
wxMenu* Plater::sla_object_menu()       { return p->menus.sla_object_menu();        }
wxMenu* Plater::default_menu()          { return p->menus.default_menu();           }
wxMenu* Plater::instance_menu()         { return p->menus.instance_menu();          }
wxMenu* Plater::layer_menu()            { return p->menus.layer_menu();             }
wxMenu* Plater::multi_selection_menu()  { return p->menus.multi_selection_menu();   }


Print& Plater::active_fff_print() { return *p->fff_prints[s_multiple_beds.get_active_bed()]; }
//SLAPrint& Plater::active_sla_print()  { return *p->sla_prints[s_multiple_beds.get_active_bed()]; }

// For now, only use the first SLAPrint for all the beds - it means reslicing
// everything when a bed is changed.
SLAPrint& Plater::active_sla_print()  { return *p->sla_prints.front(); }


SuppressBackgroundProcessingUpdate::SuppressBackgroundProcessingUpdate() :
    m_was_scheduled(wxGetApp().plater()->is_background_process_update_scheduled())
{
    wxGetApp().plater()->suppress_background_process(m_was_scheduled);
}

SuppressBackgroundProcessingUpdate::~SuppressBackgroundProcessingUpdate()
{
    wxGetApp().plater()->schedule_background_process(m_was_scheduled);
}

PlaterAfterLoadAutoArrange::PlaterAfterLoadAutoArrange()
{
    Plater* plater = wxGetApp().plater();
    m_enabled = plater->model().objects.empty() &&
                plater->printer_technology() == ptFFF &&
                is_XL_printer(plater->active_fff_print().config());
}

PlaterAfterLoadAutoArrange::~PlaterAfterLoadAutoArrange()
{
    if (m_enabled)
        wxGetApp().plater()->arrange(false);
}

}}    // namespace Slic3r::GUI
