public void Undo()
{
EndUndoCollection(); //just in case this wasn't called before
if (undoStack.Count > 0)
{
var undoable = undoStack.Pop();
var redoable = undoable.Revert(this);
redoStack.Push(new RedoEntry {
undoable = undoable, redoable = redoable
});
Reverted?.Invoke(this, new RevertedEventArgs(redoable));
ObjectsMoved?.Invoke(this, null);
if (undoStack.Count == 0)
{
IsSaved = LastSavedUndo == null;
}
else
{
IsSaved = LastSavedUndo == undoStack.Peek();
}
}
}
public void Redo()
{
if (redoStack.Count > 0)
{
var entry = redoStack.Pop();
entry.redoable.Revert(this);
undoStack.Push(entry.undoable);
Reverted?.Invoke(this, new RevertedEventArgs(entry.undoable));
ObjectsMoved?.Invoke(this, null);
IsSaved = undoStack.Peek() == LastSavedUndo;
}
}
public void AddTransformToUndo(TransformChangeInfos transformChangeInfos)
{
if (transformChangeInfos.changedRotations > 0)
{
AddToUndo(new RevertableRotChange(transformChangeInfos));
}
else if (transformChangeInfos.changedScales > 0)
{
AddToUndo(new RevertableScaleChange(transformChangeInfos));
}
else if (transformChangeInfos.changedPositions > 0)
{
AddToUndo(new RevertablePosChange(transformChangeInfos));
}
if (transformChangeInfos.changedPositions + transformChangeInfos.changedRotations + transformChangeInfos.changedScales > 0)
{
ObjectsMoved?.Invoke(this, null);
}
}