public override bool CanAppend(UndoRedoAction action)
{
EditFieldAction castAction = action as EditFieldAction;
if (castAction == null) return false;
if (castAction.targetField != this.targetField) return false;
if (!castAction.targetObj.SequenceEqual(this.targetObj)) return false;
return true;
}
public override void Append(UndoRedoAction action, bool performAction)
{
base.Append(action, performAction);
EditFieldAction castAction = action as EditFieldAction;
if (performAction)
{
castAction.backupValue = this.backupValue;
castAction.Do();
}
this.targetValue = castAction.targetValue ?? this.targetValue;
}