/// <summary>
/// Initializes a new instance of the <see cref="XCasePrimitiveJunction"/> class.
/// </summary>
/// <param name="xCaseCanvas">canvas where the control is placed</param>
/// <param name="sourceElement">source element</param>
/// <param name="targetElement">target element</param>
public XCasePrimitiveJunction(XCaseCanvas xCaseCanvas, IHasBounds sourceElement, IPrimitiveJunctionTarget targetElement)
{
SourceElement = sourceElement;
TargetElement = targetElement;
XCaseCanvas = xCaseCanvas;
((FrameworkElement)sourceElement).SizeChanged += delegate { InvalidateVisual(); };
((Control)sourceElement).LayoutUpdated += Source_LayoutUpdated;
XCaseCanvas.Children.Add(this);
Source_LayoutUpdated(null, null);
Pen = MediaLibrary.SolidBlackPen;
}
/// <summary>
/// Invoked when an unhandled <see cref="System.Windows.Input.Mouse.PreviewMouseDownEvent"/>�attached event reaches
/// an element in its route that is derived from this class.
/// The event drops dragging and this method stops highlighting the association to which the association end belongs.
/// </summary>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs"/> that contains the event data. The event data reports that one or more mouse buttons were pressed.</param>
protected override void OnPreviewMouseDown(System.Windows.Input.MouseButtonEventArgs e)
{
IPrimitiveJunctionTarget targetJunction = null;
if (Association != null)
{
Association.Highlight();
}
if (PSM_Association != null)
{
PSM_Association.Junction.Highlight();
}
if (highlightJunction == null)
{
if (Association != null && AssociationEnd != null)
{
targetJunction = Association.GetJunctionConnectingEnd(AssociationEnd);
}
if (PSM_Association != null)
{
targetJunction = PSM_Association;
}
if (targetJunction != null)
{
highlightJunction = new XCasePrimitiveJunction(XCaseCanvas, this, targetJunction)
{
Pen = MediaLibrary.DashedBlackPen
};
}
}
if (highlightJunction != null)
{
highlightJunction.Visibility = Visibility.Visible;
}
base.OnPreviewMouseDown(e);
}
