/// <summary>
/// Handles the MouseRightButtonDown event for the Node
/// </summary>
/// <param name="args">Arguments for the event</param>
public void NodeMouseRightButtonDownEventHandler(NodeViewModelMouseEventArgs<MouseButtonEventArgs> args)
{
// Ensure that the context menu has not already been initialized
if (nodeContextMenu == null)
{
nodeContextMenu = new ContextMenu();
nodeContextMenu.ItemsSource = nodeMenuItems;
nodeContextMenu.Opening += new RoutedEventHandler(NodeContextMenuOpeningHandler);
nodeContextMenu.Closed += new RoutedEventHandler(NodeContextMenuClosedHandler);
}
// Save the NodeViewModel that the right click was on
targetNodeVM = args.NodeViewModel;
// Open the Node's ContextMenu
nodeContextMenu.OpenPopup(args.MouseArgs.GetPosition(null));
}
/// <summary>
/// Handles changes to the IsOpen DependencyProperty
/// </summary>
/// <param name="o">DependencyObject that changed</param>
/// <param name="e">Event data for the DependencyPropertyChangedEvent</param>
private static void OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ContextMenu contextMenu = d as ContextMenu;
contextMenu.OnIsOpenChanged((bool)e.OldValue, (bool)e.NewValue);
}
/// <summary>
/// Handles the MouseRightButtonDown event for the Graph
/// </summary>
/// <param name="args">Arguments for the event</param>
public void GraphMouseRightButtonDownEventHandler(MouseButtonEventArgs args)
{
// Ensure that the context menu has not already been initialized
if (graphContextMenu == null)
{
graphContextMenu = new ContextMenu();
graphContextMenu.ItemsSource = graphMenuItems;
graphContextMenu.Opening += new RoutedEventHandler(GraphContextMenuOpeningHandler);
}
// Open the Graph's ContextMenu
graphContextMenu.OpenPopup(args.GetPosition(null));
}
/// <summary>
/// Handles changes to the HorizontalOffset or VerticalOffset DependencyProperty
/// </summary>
/// <param name="o">DependencyObject that changed</param>
/// <param name="e">Event data for the DependencyPropertyChangedEvent</param>
private static void OnHorizontalVerticalOffsetChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ContextMenu contextMenu = d as ContextMenu;
contextMenu.UpdateContextMenuPlacement();
}