UndoStateExtension Class Reference

Base class for extra information attached to undo/redo states. More...

#include <UndoManager.h>

Inheritance diagram for UndoStateExtension:

Public Member Functions
virtual	~UndoStateExtension ()
virtual void	RestoreUndoRedoState (AudacityProject &project)=0
	Modify the project when undoing or redoing to some state in history. More...
virtual bool	CanUndoOrRedo (const AudacityProject &project)
	Whether undo or redo is now permitted; default returns true. More...

Detailed Description

Base class for extra information attached to undo/redo states.

Definition at line 83 of file UndoManager.h.

Constructor & Destructor Documentation

~UndoStateExtension()

UndoStateExtension::~UndoStateExtension ( )

virtualdefault

Member Function Documentation

CanUndoOrRedo()

bool UndoStateExtension::CanUndoOrRedo ( const AudacityProject &  project )

virtual

Whether undo or redo is now permitted; default returns true.

Reimplemented in anonymous_namespace{UndoTracks.cpp}::TrackListRestorer.

Definition at line 36 of file UndoManager.cpp.

{
   return true;
}

RestoreUndoRedoState()

virtual void UndoStateExtension::RestoreUndoRedoState ( AudacityProject &  project )

pure virtual

Modify the project when undoing or redoing to some state in history.

Implemented in Tags, RealtimeEffectList, anonymous_namespace{ViewInfo.cpp}::SelectedRegionRestorer, anonymous_namespace{UndoTracks.cpp}::TrackListRestorer, and anonymous_namespace{TimeSignatureToolBar.cpp}::TimeSignatureRestorer.

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The documentation for this class was generated from the following files:

• UndoManager.h
• UndoManager.cpp