public void Undo()
{
if (undoHistory.Count == 0)
{
return;
}
var action = undoHistory.Peek();
action.Undo();
undoHistory.Pop();
redoHistory.Push(action);
ActionUndone?.Invoke(this, action);
}
public void Undo()
{
if (Pointer < 0)
{
throw new InvalidOperationException("Undo stack is empty");
}
else
{
var item = history[Pointer];
item.Undo();
item.State = HistoryItemState.Redo;
if (item.CausesDirty)
{
document.IsDirty = true;
}
ListStore.SetValue(item.Id, 0, item);
history[Pointer] = item;
Pointer--;
}
if (Pointer == clean_pointer)
{
document.IsDirty = false;
}
if (Pointer == 0)
{
PintaCore.Actions.Edit.Undo.Sensitive = false;
}
PintaCore.Actions.Edit.Redo.Sensitive = true;
ActionUndone?.Invoke(this, EventArgs.Empty);
}
/// <summary>
/// </summary>
protected void OnActionUndone()
{
ActionUndone?.Invoke(sender: null, e: null);
}
/// <summary>
/// </summary>
protected void OnActionUndone()
{
ActionUndone?.Invoke(null, null);
}