73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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SelectionState.h
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**********************************************************************/
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#ifndef __AUDACITY_SELECTION_STATE__
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#define __AUDACITY_SELECTION_STATE__
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class AudacityProject;
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class Track;
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class TrackList;
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class ViewInfo;
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#include "ClientData.h"
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#include "MemoryX.h"
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#include <vector>
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// State relating to the set of selected tracks
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class AUDACITY_DLL_API SelectionState final
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: public ClientData::Base
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{
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public:
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SelectionState() = default;
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SelectionState( const SelectionState & ) PROHIBITED;
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SelectionState &operator=( const SelectionState & ) PROHIBITED;
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static SelectionState &Get( AudacityProject &project );
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static const SelectionState &Get( const AudacityProject &project );
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static void SelectTrackLength
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( ViewInfo &viewInfo, Track &track, bool syncLocked );
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void SelectTrack(
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Track &track, bool selected, bool updateLastPicked );
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// Inclusive range of tracks, the limits specified in either order:
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void SelectRangeOfTracks
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( TrackList &tracks, Track &sTrack, Track &eTrack );
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void SelectNone( TrackList &tracks );
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void ChangeSelectionOnShiftClick
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( TrackList &tracks, Track &track );
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void HandleListSelection
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( TrackList &tracks, ViewInfo &viewInfo, Track &track,
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bool shift, bool ctrl, bool syncLocked );
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private:
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friend class SelectionStateChanger;
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std::weak_ptr<Track> mLastPickedTrack;
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};
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// For committing or rolling-back of changes in selectedness of tracks.
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// When rolling back, it is assumed that no tracks have been added or removed.
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class AUDACITY_DLL_API SelectionStateChanger
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{
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public:
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SelectionStateChanger( SelectionState &state, TrackList &tracks );
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SelectionStateChanger( const SelectionStateChanger& ) = delete;
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SelectionStateChanger &operator=( const SelectionStateChanger& ) = delete;
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~SelectionStateChanger();
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void Commit();
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private:
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SelectionState *mpState;
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TrackList &mTracks;
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std::weak_ptr<Track> mInitialLastPickedTrack;
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std::vector<bool> mInitialTrackSelection;
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};
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#endif
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