private static void HistoryTrackerChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
{
UndoRedoButtonBase sb = (UndoRedoButtonBase)dependencyObject;
if (dependencyPropertyChangedEventArgs.OldValue != null)
{
HistoryTracker ht = (HistoryTracker)dependencyPropertyChangedEventArgs.OldValue;
ht.UndoOperationsChanged -= sb.HistoryTrackerOnOperationsChanged;
ht.RedoOperationsChanged -= sb.HistoryTrackerOnOperationsChanged;
}
if (dependencyPropertyChangedEventArgs.NewValue != null)
{
sb.HistoryTracker.UndoOperationsChanged += sb.HistoryTrackerOnOperationsChanged;
sb.HistoryTracker.RedoOperationsChanged += sb.HistoryTrackerOnOperationsChanged;
}
sb.SetOperations();
sb.CoerceValue(UIElement.IsEnabledProperty);
}
public UndoRedoCommand(UndoRedoButtonBase undoRedoButtonBase, bool undo)
{
this.undoRedoButtonBase = undoRedoButtonBase;
this.undo = undo;
}
public UndoRedoCommand(UndoRedoButtonBase undoRedoButtonBase, bool undo)
{
this.undoRedoButtonBase = undoRedoButtonBase;
this.undo = undo;
}