/// <summary>
/// Execute a new action and add/merge it in the Undo stack
/// </summary>
/// <param name="action"></param>
public void ExecAction(UndoRedoAction action)
{
if (action.Cancel)
{
return;
}
// Execute the redo action
action.Redo();
// Retrieve the last action in the list, and check if we can merge actions
if (m_undoActions.Count > 0 && m_undoActions.Peek().CanMerge(action))
{
m_undoActions.Peek().Merge(action);
}
else
{
m_undoActions.Push(action);
}
if (CanRedo)
{
m_redoActions.Clear();
}
OnUndoRedo?.Invoke(this, UndoManager.Action.Exec);
}
/// <summary>
/// If possible, perform a redo action
/// </summary>
public void Redo()
{
if (CanRedo)
{
m_redoActions.Peek().Redo();
m_undoActions.Push(m_redoActions.Pop());
OnUndoRedo?.Invoke(this, UndoManager.Action.Redo);
}
}