public void StoreUndoState()
{
if (!Undoing)
{
if (!IgnoreUndoUpdate)
{
IBackupModule backup = null;
if (ParentGroup != null &&
ParentGroup.Scene != null)
backup = ParentGroup.Scene.RequestModuleInterface<IBackupModule>();
if (m_parentGroup != null &&
ParentGroup.Scene != null &&
(backup == null || (backup != null && !backup.LoadingPrims)))
{
lock (_undoLock)
{
if (m_undo.Count > 0)
{
UndoState last = m_undo.Peek();
if (last != null)
{
if (last.Compare(this))
return;
}
}
UndoState nUndo = new UndoState(this);
m_undo.Push(nUndo);
}
}
}
}
}
public void Redo()
{
var redoCount = 0;
lock (_redoLock)
redoCount = m_redo.Count;
if (redoCount > 0) {
lock(_undoLock) {
UndoState nUndo = new UndoState (this);
m_undo.Push (nUndo);
}
UndoState gofwd = null;
lock(_redoLock)
gofwd = m_redo.Pop();
if (gofwd != null)
gofwd.PlayfwdState(this);
}
}
public void Redo()
{
lock (m_redo)
{
if (m_redo.Count > 0)
{
UndoState nUndo = new UndoState(this);
m_undo.Push(nUndo);
UndoState gofwd = m_redo.Pop();
if (gofwd != null)
gofwd.PlayfwdState(this);
}
}
}