protected void AddToUndoBuffer(GraphActionType actionType, DrawingItem cutItem, DrawingItem newItem) { if (this.currentActionIndex != (this.GraphActions.Count - 1)) // Some undo occured before { // Delete all that has been undid this.GraphActions = this.GraphActions.Take(this.currentActionIndex + 1).ToList(); } this.GraphActions.Add(new GraphAction(actionType, cutItem, newItem)); this.currentActionIndex++; }
public GraphAction(GraphActionType actionType, DrawingItem targetItem, DrawingItem targetItem2) { this.ActionType = actionType; this.TargetItem = targetItem; this.TargetItem2 = targetItem2; }