public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace) { CompoundHistoryMemento chm = new CompoundHistoryMemento(this.historyName, this.undoImage); if (!historyWorkspace.Selection.IsEmpty) { DeselectFunction df = new DeselectFunction(); EnterCriticalRegion(); HistoryMemento hm = df.Execute(historyWorkspace); chm.PushNewAction(hm); } FlipLayerHistoryMemento flha = new FlipLayerHistoryMemento( null, null, historyWorkspace, this.layerIndex, this.flipType); EnterCriticalRegion(); HistoryMemento flha2 = flha.PerformUndo(); chm.PushNewAction(flha); return(chm); }
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace) { object savedSelection = null; List <HistoryMemento> actions = new List <HistoryMemento>(); if (!historyWorkspace.Selection.IsEmpty) { savedSelection = historyWorkspace.Selection.Save(); DeselectFunction da = new DeselectFunction(); HistoryMemento hm = da.Execute(historyWorkspace); actions.Add(hm); } ReplaceDocumentHistoryMemento rdha = new ReplaceDocumentHistoryMemento(null, null, historyWorkspace); actions.Add(rdha); CompoundHistoryMemento chm = new CompoundHistoryMemento( StaticName, ImageResource.Get("Icons.MenuImageFlattenIcon.png"), actions); // TODO: we can save memory here by serializing, then flattening on to an existing layer Document flat = historyWorkspace.Document.Flatten(); EnterCriticalRegion(); historyWorkspace.Document = flat; if (savedSelection != null) { SelectionHistoryMemento shm = new SelectionHistoryMemento(null, null, historyWorkspace); historyWorkspace.Selection.Restore(savedSelection); chm.PushNewAction(shm); } return(chm); }