Function OnCopy

src/menus/EditMenus.cpp:373–417

void OnCopy(const CommandContext &context)
{
   ClearClipboard();

   auto &project = context.project;
   auto &tracks = TrackList::Get( project );
   auto &trackPanel = TrackPanel::Get( project );
   auto &selectedRegion = ViewInfo::Get( project ).selectedRegion;

   for (auto lt : tracks.Selected<LabelTrack>()) {
      auto &view = LabelTrackView::Get( *lt );
      if (view.CopySelectedText( context.project )) {
         //trackPanel.Refresh(false);
         return;
      }
   }
   //Presumably, there might be not more than one track
   //that expects text input
   for (auto wt : tracks.Any<WaveTrack>()) {
      auto& view = WaveChannelView::GetFirst(*wt);
      if (view.CopySelectedText(context.project)) {
         return;
      }
   }

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

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

   for (auto n : tracks.Selected()) {
      if (n->SupportsBasicEditing()) {
         auto dest = n->Copy(selectedRegion.t0(), selectedRegion.t1());
         newClipboard.Add(dest);
      }
   }

   // Survived possibility of exceptions.  Commit changes to the clipboard now.
   clipboard.Assign( std::move( newClipboard ),
      selectedRegion.t0(), selectedRegion.t1(), project.shared_from_this() );

   //Make sure the menus/toolbar states get updated
   trackPanel.Refresh(false);
}

std::pair<double, double> FindSelection(const CommandContext &context)
{