public void PopGroup()
{
lock (m_lockObject)
{
CUndoItem groupCache = m_currentUndoGroup;
m_currentUndoGroup = null;
Record(groupCache);
}
}
public void Redo()
{
lock (m_lockObject)
{
bool bWasRecording = IsRecording;
IsRecording = false;
CUndoItem redoItem = RedoStack.Pop();
redoItem.Redo();
UndoStack.Push(redoItem);
IsRecording = bWasRecording;
OnItemRedone?.Invoke(this, redoItem);
}
}
public void Undo()
{
lock (m_lockObject)
{
bool bWasRecording = IsRecording;
IsRecording = false;
CUndoItem undoItem = UndoStack.Pop();
undoItem.Undo();
RedoStack.Push(undoItem);
IsRecording = bWasRecording;
OnItemUndone?.Invoke(this, undoItem);
}
}
public void Record(CUndoItem item)
{
if (!IsRecording)
{
return;
}
lock (m_lockObject)
{
if (m_currentUndoGroup != null)
{
m_currentUndoGroup.Items.Add(item);
return;
}
UndoStack.Push(item);
RedoStack.Clear();
OnItemRecorded?.Invoke(this, item);
}
}
public static void Record(CUndoItem item)
{
Instance?.Record(item);
}
