public void StopOperation(bool commit)
{
if (!_done)
{
_done = true;
_pad.Canvas.MouseMove -= HandleMouseMove;
_pad.Canvas.MouseDown -= HandleMouseDown;
_pad.Canvas.KeyDown -= HandleKeyDown;
_pad.Canvas.Children.Remove(_selector);
_pad.SetSketchItemEnable(true);
_pad.Canvas.ContextMenu = _oldContextMenue;
}
}
public AddConnectorOperation(ISketchItemDisplay pad, ConnectableBase from, Point p)
{
_from = from;
_pad = pad;
//
// at this point it is not sufficient to consider only the bounds
// in case of a lengthy object, we would like to place that start point close to where
// the user pressed the button!
// hence we should query the from object for a decent start point
//
var start = p;// ConnectorUtilities.ComputeCenter(from.Bounds);
_selector = new ConnectablePairSelector(start, p);
_pad.Canvas.Children.Add(_selector);
_selector.Visibility = Visibility.Visible;
_pad.SetSketchItemEnable(false);
_oldContextMenue = _pad.Canvas.ContextMenu;
_pad.Canvas.MouseMove += HandleMouseMove;
_pad.Canvas.MouseDown += HandleMouseDown;
_pad.Canvas.KeyDown += HandleKeyDown;
_pad.TakeSnapshot();
}