#include "AudioIO.h"
#include "BasicUI.h"
#include "../Clipboard.h"
#include "../CommonCommandFlags.h"
#include "../LabelTrack.h"
#include "Prefs.h"
#include "Project.h"
#include "ProjectAudioIO.h"
#include "ProjectHistory.h"
#include "../ProjectWindow.h"
#include "../SelectUtilities.h"
#include "SyncLock.h"
#include "../TrackPanelAx.h"
#include "../TrackPanel.h"
#include "ViewInfo.h"
#include "WaveTrack.h"
#include "WaveTrackUtilities.h"
#include "../commands/CommandContext.h"
#include "../commands/CommandManager.h"
#include "../tracks/labeltrack/ui/LabelTrackView.h"
#include "toolbars/ToolManager.h"

#include <cassert>

using Region = WaveTrack::Region;
using Regions = WaveTrack::Regions;

// private helper classes and functions
namespace {

const ReservedCommandFlag
&LabelsSelectedFlag() { static ReservedCommandFlag flag{
   [](const AudacityProject &project){
      // At least one label track selected, having at least one label
      // completely within the time selection.
      const auto &selectedRegion = ViewInfo::Get( project ).selectedRegion;
      const auto &test = [&]( const LabelTrack *pTrack ){
         const auto &labels = pTrack->GetLabels();
         return std::any_of( labels.begin(), labels.end(),
            [&](const LabelStruct &label){
               return
                  label.getT0() >= selectedRegion.t0()
               &&
                  label.getT1() <= selectedRegion.t1()
               ;
            }
         );
      };
      auto range = TrackList::Get(project).Selected<const LabelTrack>()
         + test;
      return !range.empty();
   }
}; return flag; }

//Adds label and returns index of label in labeltrack.
int DoAddLabel(
   AudacityProject &project, const SelectedRegion &region,
   bool preserveFocus = false)
{
   auto &tracks = TrackList::Get( project );
   auto &trackFocus = TrackFocus::Get( project );
   auto &trackPanel = TrackPanel::Get( project );

   wxString title;      // of label

   bool useDialog;
   gPrefs->Read(wxT("/GUI/DialogForNameNewLabel"), &useDialog, false);
   if (useDialog) {
      if (LabelTrackView::DialogForLabelName(
         project, region, wxEmptyString, title) == wxID_CANCEL)
         return -1;     // index
   }

   // If the focused track is a label track, use that
   const auto pFocusedTrack = trackFocus.Get();

   // Look for a label track at or after the focused track
   auto begin = tracks.begin();
   auto iter = pFocusedTrack
      ? tracks.Find(pFocusedTrack)
      : begin;
   auto lt = * iter.Filter<LabelTrack>();

   // If none found, start a NEW label track and use it
   if (!lt)
      lt = LabelTrack::Create(tracks);

// LLL: Commented as it seemed a little forceful to remove users
//      selection when adding the label.  This does not happen if
//      you select several tracks and the last one of those is a
//      label track...typing a label will not clear the selections.
//
//   SelectNone();
   lt->SetSelected(true);

   int index;
   if (useDialog) {
      index = lt->AddLabel(region, title);
   }
   else {
      int focusTrackNumber = -1;
      if (pFocusedTrack && preserveFocus) {
         // Must remember the track to re-focus after finishing a label edit.
         // do NOT identify it by a pointer, which might dangle!  Identify
         // by position.
         focusTrackNumber = std::distance(begin, iter);
      }
      index =
         LabelTrackView::Get( *lt ).AddLabel(region, title, focusTrackNumber);
   }

   ProjectHistory::Get( project )
      .PushState(XO("Added label"), XO("Label"));

   if (!useDialog) {
      TrackFocus::Get(project).Set(lt);
      lt->EnsureVisible();
   }
   trackPanel.SetFocus();

   return index;
}

//get regions selected by selected labels
//removes unnecessary regions, overlapping regions are merged
void GetRegionsByLabel(
   const TrackList &tracks, const SelectedRegion &selectedRegion,
   Regions &regions )
{
   //determine labeled regions
   for (auto lt : tracks.Selected< const LabelTrack >()) {
      for (int i = 0; i < lt->GetNumLabels(); i++)
      {
         const LabelStruct *ls = lt->GetLabel(i);
         if (ls->selectedRegion.t0() >= selectedRegion.t0() &&
            ls->selectedRegion.t1() <= selectedRegion.t1())
            regions.push_back(Region(ls->getT0(), ls->getT1()));
      }
   }

   //anything to do ?
   if( regions.size() == 0 )
      return;

   //sort and remove unnecessary regions
   std::sort(regions.begin(), regions.end());
   unsigned int selected = 1;
   while( selected < regions.size() )
   {
      const Region &cur = regions.at( selected );
      Region &last = regions.at( selected - 1 );
      if( cur.start < last.end )
      {
         if( cur.end > last.end )
            last.end = cur.end;
         regions.erase( regions.begin() + selected );
      }
      else
         ++selected;
   }
}

/*!
 @pre `track.IsLeader()`
 */
using EditFunction = std::function<void(Track& track, double, double)>;
using EditFunctionWithProgress =
   std::function<void(Track& track, double, double, ProgressReporter)>;

// Executes the edit function on all selected wave tracks with
// regions specified by selected labels
// If No tracks selected, function is applied on all tracks
// If the function replaces the selection with audio of a different length,
// bSyncLockedTracks should be set true to perform the same action on sync-lock
// selected tracks.
// If `progress` is non-null, `action` is passed a callable `ProgressReporter`.
void EditByLabel(
   AudacityProject& project, TrackList& tracks,
   const SelectedRegion& selectedRegion, EditFunctionWithProgress action,
   ProgressReporter progress)
{
   Regions regions;

   GetRegionsByLabel(tracks, selectedRegion, regions);
   if (regions.empty())
      return;

   const bool notLocked = (!SyncLockState::Get(project).IsSyncLocked() &&
                           (tracks.Selected<PlayableTrack>()).empty());

   const auto tracksToEdit = tracks.Any<Track>() + [&](const auto pTrack) {
      return SyncLock::IsSyncLockSelected(pTrack) ||
             (notLocked && dynamic_cast<const PlayableTrack*>(pTrack) != nullptr);
   };

   BasicUI::SplitProgress(
      tracksToEdit.begin(), tracksToEdit.end(),
      [&](Track* aTrack, const ProgressReporter& child) {
         // Apply action on tracks starting from labeled regions in the end.
         // This is to correctly perform actions like 'Delete' which collapse
         // the track area.
         BasicUI::SplitProgress(
            regions.rbegin(), regions.rend(),
            [&](const Region& region, const ProgressReporter& grandChild) {
               action(*aTrack, region.start, region.end, grandChild);
            },
            child);
      },
      progress);
}

void EditByLabel(
   AudacityProject& project, TrackList& tracks,
   const SelectedRegion& selectedRegion, EditFunction action)
{
   EditByLabel(
      project, tracks, selectedRegion,
      [&](Track& track, double t0, double t1, ProgressReporter) {
         action(track, t0, t1);
      },
      nullptr);
}

//! The argument is always a leader track and the return has an equal number
//! of channels, or is null
using EditDestFunction =
   std::function<std::shared_ptr<TrackList>(Track &, double, double)>;

//Executes the edit function on all selected wave tracks with
//regions specified by selected labels
//If No tracks selected, function is applied on all tracks
//Functions copy the edited regions to clipboard, possibly in multiple tracks
//This probably should not be called if *action() changes the timeline, because
// the copy needs to happen by track, and the timeline change by group.
void EditClipboardByLabel(AudacityProject &project,
   TrackList &tracks, const SelectedRegion &selectedRegion,
   EditDestFunction action)
{
   Regions regions;

   GetRegionsByLabel(tracks, selectedRegion, regions);
   if (regions.empty())
      return;

   const bool notLocked = (!SyncLockState::Get(project).IsSyncLocked() &&
                           (tracks.Selected<PlayableTrack>()).empty());

   auto &clipboard = Clipboard::Get();
   clipboard.Clear();

   auto pNewClipboard = TrackList::Create(nullptr);
   auto &newClipboard = *pNewClipboard;

   //Apply action on wavetracks starting from
   //labeled regions in the end. This is to correctly perform
   //actions like 'Cut' which collapse the track area.

   for (auto t : tracks) {
      const bool playable = dynamic_cast<const PlayableTrack *>(t) != nullptr;
      if (SyncLock::IsSyncLockSelected(t) || (notLocked && playable)) {
         // These tracks accumulate the needed clips, right to left:
         std::shared_ptr<TrackList> merged;
         for (size_t i = regions.size(); i--;) {
            const Region &region = regions.at(i);
            if (auto dest = action(*t, region.start, region.end)) {
               if (!merged)
                  merged = dest;
               else {
                  const auto pMerged = *merged->begin();
                  // Paste to the beginning; unless this is the first region,
                  // offset the track to account for time between the regions
                  if (i + 1 < regions.size())
                     pMerged->ShiftBy(
                        regions.at(i + 1).start - region.end);

                  // dest may have a placeholder clip at the end that is
                  // removed when pasting, which is okay because we proceed
                  // right to left.  Any placeholder already in merged is kept.
                  // Only the rightmost placeholder is important in the final
                  // result.
                  pMerged->Paste(0.0, *dest);
               }
            }
            else
               // nothing copied but there is a 'region', so the 'region' must
               // be a 'point label' so offset
               if (i + 1 < regions.size() && merged)
                  (*merged->begin())
                     ->ShiftBy(regions.at(i + 1).start - region.end);
         }
         if (merged)
            newClipboard.Append(std::move(*merged));
      }
   }

   // Survived possibility of exceptions.  Commit changes to the clipboard now.
   clipboard.Assign( std::move( newClipboard ),
      regions.front().start, regions.back().end, project.shared_from_this() );
}

}

/// Namespace for functions for Edit Label submenu
namespace {

// Menu handler functions

void OnEditLabels(const CommandContext &context)
{
   auto &project = context.project;
   LabelTrackView::DoEditLabels(project);
}

void OnAddLabel(const CommandContext &context)
{
   auto &project = context.project;
   auto &selectedRegion = ViewInfo::Get( project ).selectedRegion;

   DoAddLabel(project, selectedRegion);
}

void OnAddLabelPlaying(const CommandContext &context)
{
   auto &project = context.project;
   auto token = ProjectAudioIO::Get( project ).GetAudioIOToken();

   auto gAudioIO = AudioIO::Get();
   if (token > 0 &&
       gAudioIO->IsStreamActive(token)) {
      double indicator = gAudioIO->GetStreamTime();
      DoAddLabel(project, SelectedRegion(indicator, indicator), true);
   }
}

// Creates a NEW label in each selected label track with text from the system
// clipboard
void OnPasteNewLabel(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get( project );
   auto &trackPanel = TrackPanel::Get( project );
   auto &selectedRegion = ViewInfo::Get( project ).selectedRegion;

   bool bPastedSomething = false;

   {
      auto trackRange = tracks.Selected<const LabelTrack>();
      if (trackRange.empty())
      {
         // If there are no selected label tracks, try to choose the first label
         // track after some other selected track
         Track *t = *tracks.Selected().begin()
            .Filter(&Track::Any)
            .Filter<LabelTrack>();

         // If no match found, add one
         if (!t)
            t = LabelTrack::Create(tracks);

         // Select this track so the loop picks it up
         t->SetSelected(true);
      }
   }

   LabelTrack *plt = NULL; // the previous track
   for ( auto lt : tracks.Selected<LabelTrack>() )
   {
      // Unselect the last label, so we'll have just one active label when
      // we're done
      if (plt)
         LabelTrackView::Get( *plt ).ResetTextSelection();

      // Add a NEW label, paste into it
      // Paul L:  copy whatever defines the selected region, not just times
      auto &view = LabelTrackView::Get( *lt );
      view.AddLabel(selectedRegion);
      if (view.PasteSelectedText( context.project, selectedRegion.t0(),
                                selectedRegion.t1() ))
         bPastedSomething = true;

      // Set previous track
      plt = lt;
   }

   // plt should point to the last label track pasted to -- ensure it's visible
   // and set focus
   if (plt) {
      TrackFocus::Get(project).Set(plt);
      plt->EnsureVisible();
      trackPanel.SetFocus();
   }

   if (bPastedSomething) {
      ProjectHistory::Get( project ).PushState(
         XO("Pasted from the clipboard"), XO("Paste Text to New Label"));
   }
}

void OnToggleTypeToCreateLabel(const CommandContext &WXUNUSED(context) )
{
   bool typeToCreateLabel;
   gPrefs->Read(wxT("/GUI/TypeToCreateLabel"), &typeToCreateLabel, false);
   gPrefs->Write(wxT("/GUI/TypeToCreateLabel"), !typeToCreateLabel);
   gPrefs->Flush();
   ToolManager::ModifyAllProjectToolbarMenus();
}

void OnCutLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
     return;

   // Because of grouping the copy may need to operate on different tracks than
   // the clear, so we do these actions separately.
   auto copyfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      std::shared_ptr<TrackList> result;
      track.TypeSwitch( [&](WaveTrack &wt) { result = wt.Copy(t0, t1); } );
      return result;
   };
   EditClipboardByLabel(project, tracks, selectedRegion, copyfunc);

   bool enableCutlines = gPrefs->ReadBool(wxT( "/GUI/EnableCutLines"), false);
   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      track.TypeSwitch(
         [&](WaveTrack &t) {
            if (enableCutlines)
               t.ClearAndAddCutLine(t0, t1);
            else
               t.Clear(t0, t1);
         },
         [&](Track &t) {
            t.Clear(t0, t1);
         }
      );
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   selectedRegion.collapseToT0();

   ProjectHistory::Get(project).PushState(
   /* i18n-hint: (verb) past tense.  Audacity has just cut the labeled audio
      regions.*/
      XO("Cut labeled audio regions to clipboard"),
   /* i18n-hint: (verb)*/
      XO("Cut Labeled Audio"));
}

void OnDeleteLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      track.TypeSwitch( [&](Track &t) { t.Clear(t0, t1); } );
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   selectedRegion.collapseToT0();

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) Audacity has just deleted the labeled audio regions*/
      XO("Deleted labeled audio regions"),
      /* i18n-hint: (verb)*/
      XO("Delete Labeled Audio"));
}

void OnSplitCutLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto copyfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      std::shared_ptr<TrackList> result;
      track.TypeSwitch(
         [&](WaveTrack &wt) {
            result = wt.SplitCut(t0, t1);
         },
         [&](Track &t) {
            result = t.Copy(t0, t1);
            t.Silence(t0, t1);
         }
      );
      return result;
   };
   EditClipboardByLabel(project, tracks, selectedRegion, copyfunc);

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) Audacity has just split cut the labeled audio
         regions*/
      XO("Split Cut labeled audio regions to clipboard"),
      /* i18n-hint: (verb) Do a special kind of cut on the labels*/
      XO("Split Cut Labeled Audio"));
}

void OnSplitDeleteLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      track.TypeSwitch(
         [&](WaveTrack &t) {
            t.SplitDelete(t0, t1);
         },
         [&](Track &t) {
            t.Silence(t0, t1);
         }
      );
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) Audacity has just done a special kind of DELETE on
         the labeled audio regions */
      XO("Split Deleted labeled audio regions"),
      /* i18n-hint: (verb) Do a special kind of DELETE on labeled audio
         regions */
      XO("Split Delete Labeled Audio"));
}

void OnSilenceLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      // TODO use progress-bar utilities pending in
      // https://github.com/audacity/audacity/pull/5043
      track.TypeSwitch([&](WaveTrack& t) { t.Silence(t0, t1, {}); });
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb)*/
      XO("Silenced labeled audio regions"),
      /* i18n-hint: (verb)*/
      XO("Silence Labeled Audio"));
}

void OnCopyLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto copyfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      std::shared_ptr<TrackList> result;
      track.TypeSwitch( [&](WaveTrack &wt) { result = wt.Copy(t0, t1); } );
      return result;
   };
   EditClipboardByLabel(project, tracks, selectedRegion, copyfunc);

   ProjectHistory::Get(project)
      .PushState(XO("Copied labeled audio regions to clipboard"),
         /* i18n-hint: (verb)*/
         XO("Copy Labeled Audio"));
}

void OnSplitLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      track.TypeSwitch( [&](WaveTrack &t) { t.Split(t0, t1); } );
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) past tense.  Audacity has just split the labeled
         audio (a point or a region)*/
      XO("Split labeled audio (points or regions)"),
      /* i18n-hint: (verb)*/
      XO("Split Labeled Audio"));
}

void OnJoinLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track& track, double t0, double t1, ProgressReporter reportProgress) {
      assert(track.IsLeader());
      track.TypeSwitch(
         [&](WaveTrack& t) { t.Join(t0, t1, std::move(reportProgress)); });
   };
   WaveTrackUtilities::WithStretchRenderingProgress(
      [&](ProgressReporter progress) {
         EditByLabel(project, tracks, selectedRegion, editfunc, progress);
      });

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) Audacity has just joined the labeled audio (points or
         regions) */
      XO("Joined labeled audio (points or regions)"),
      /* i18n-hint: (verb) */
      XO("Join Labeled Audio"));
}

void OnDisjoinLabels(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get(project);
   auto &selectedRegion = ViewInfo::Get(project).selectedRegion;

   if (selectedRegion.isPoint())
      return;

   auto editfunc = [&](Track &track, double t0, double t1) {
      assert(track.IsLeader());
      track.TypeSwitch( [&](WaveTrack &t) {
         wxBusyCursor busy;
         t.Disjoin(t0, t1);
      } );
   };
   EditByLabel(project, tracks, selectedRegion, editfunc);

   ProjectHistory::Get(project).PushState(
      /* i18n-hint: (verb) Audacity has just detached the labeled audio regions.
      This message appears in history and tells you about something
      Audacity has done.*/
      XO("Detached labeled audio regions"),
      /* i18n-hint: (verb)*/
      XO("Detach Labeled Audio"));
}

void OnNewLabelTrack(const CommandContext &context)
{
   auto &project = context.project;
   auto &tracks = TrackList::Get( project );

   auto track = LabelTrack::Create(tracks);

   SelectUtilities::SelectNone( project );

   track->SetSelected(true);

   ProjectHistory::Get( project )
      .PushState(XO("Created new label track"), XO("New Track"));

   TrackFocus::Get(project).Set(track);
   track->EnsureVisible();
}

// Menu definitions

using namespace MenuTable;
BaseItemSharedPtr LabelEditMenus()
{
   using namespace MenuTable;
   using Options = CommandManager::Options;

   static const auto NotBusyLabelsAndWaveFlags =
      AudioIONotBusyFlag() |
      LabelsSelectedFlag() | WaveTracksExistFlag() | TimeSelectedFlag();

   // Returns TWO menus.

   static BaseItemSharedPtr menus{
   Items( wxT("LabelEditMenus"),

   Menu( wxT("Labels"), XXO("&Labels"),
      Section( "",
         Command( wxT("EditLabels"), XXO("Label &Editor"), OnEditLabels,
                    AudioIONotBusyFlag() )
      ),

      Section( "",
         Command( wxT("AddLabel"), XXO("Add Label at &Selection"),
            OnAddLabel, AlwaysEnabledFlag, wxT("Ctrl+B") ),
         Command( wxT("AddLabelPlaying"),
            XXO("Add Label at &Playback Position"),
            OnAddLabelPlaying, AudioIOBusyFlag(),
   #ifdef __WXMAC__
            wxT("Ctrl+.")
   #else
            wxT("Ctrl+M")
   #endif
         ),
         Command( wxT("PasteNewLabel"), XXO("Paste Te&xt to New Label"),
            OnPasteNewLabel,
            AudioIONotBusyFlag(), wxT("Ctrl+Alt+V") )
      ),

      Section( "",
         Command( wxT("TypeToCreateLabel"),
            XXO("&Typing Creates New Labels"),
            OnToggleTypeToCreateLabel, AlwaysEnabledFlag,
            Options{}.CheckTest(wxT("/GUI/TypeToCreateLabel"), false) )
      )
   ), // first menu

   /////////////////////////////////////////////////////////////////////////////

   Menu( wxT("Labeled"), XXO("La&beled Audio"),
      Section( "",
         /* i18n-hint: (verb)*/
         Command( wxT("CutLabels"), XXO("&Cut"), OnCutLabels,
            AudioIONotBusyFlag() | LabelsSelectedFlag() | WaveTracksExistFlag() |
               TimeSelectedFlag(),
               Options{ wxT("Alt+X"), XO("Label Cut") } ),
         Command( wxT("DeleteLabels"), XXO("&Delete"), OnDeleteLabels,
            AudioIONotBusyFlag() | LabelsSelectedFlag() | WaveTracksExistFlag() |
               TimeSelectedFlag(),
            Options{ wxT("Alt+K"), XO("Label Delete") } )
      ),

      Section( "",
         /* i18n-hint: (verb) A special way to cut out a piece of audio*/
         Command( wxT("SplitCutLabels"), XXO("&Split Cut"),
            OnSplitCutLabels, NotBusyLabelsAndWaveFlags,
            Options{ wxT("Alt+Shift+X"), XO("Label Split Cut") } ),
         Command( wxT("SplitDeleteLabels"), XXO("Sp&lit Delete"),
            OnSplitDeleteLabels, NotBusyLabelsAndWaveFlags,
            Options{ wxT("Alt+Shift+K"), XO("Label Split Delete") } )
      ),

      Section( "",
         Command( wxT("SilenceLabels"), XXO("Silence &Audio"),
            OnSilenceLabels, NotBusyLabelsAndWaveFlags,
            Options{ wxT("Alt+L"), XO("Label Silence") } ),
         /* i18n-hint: (verb)*/
         Command( wxT("CopyLabels"), XXO("Co&py"), OnCopyLabels,
            NotBusyLabelsAndWaveFlags,
            Options{ wxT("Alt+Shift+C"), XO("Label Copy") } )
      ),

      Section( "",
         /* i18n-hint: (verb)*/
         Command( wxT("SplitLabels"), XXO("Spli&t"), OnSplitLabels,
            AudioIONotBusyFlag() | LabelsSelectedFlag() | WaveTracksExistFlag(),
            Options{ wxT("Alt+I"), XO("Label Split") } ),
         /* i18n-hint: (verb)*/
         Command( wxT("JoinLabels"), XXO("&Join"), OnJoinLabels,
            NotBusyLabelsAndWaveFlags,
            Options{ wxT("Alt+J"), XO("Label Join") } ),
         Command( wxT("DisjoinLabels"), XXO("Detac&h at Silences"),
            OnDisjoinLabels, NotBusyLabelsAndWaveFlags,
            wxT("Alt+Shift+J") )
      )
   ) // second menu

   ) }; // two menus
   return menus;
}

AttachedItem sAttachment1{
   { wxT("Edit/Other"),
     { OrderingHint::Before, wxT("EditMetaData") } },
   Indirect(LabelEditMenus())
};

AttachedItem sAttachment2{ wxT("Tracks/Add/Add"),
   Command( wxT("NewLabelTrack"), XXO("&Label Track"),
      OnNewLabelTrack, AudioIONotBusyFlag() )
};

}
