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Right Click Context Menu Problem

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JDT asked on 20 May 2010, 06:42 AM

Hi Telerik, appreciate the help as always. Here's the problem. When I right click a node (it doesn't get selected, it should, but since it doesn't I can't use the selecteditem property of the tree). I therefore use the method in the documentation.

                     RadMenuItem menuItem = ((RadRoutedEventArgs)e).OriginalSource as RadMenuItem;         
             RadTreeViewItem riParent = FindParentOfType<RadTreeViewItem>(menuItem);         

                    private static T FindParentOfType<T>(UIElement element) where T : UIElement         
                    {         
                        if (element == null)         
                            return null;         
                        DependencyObject parent =         
                            Telerik.Windows.RoutedEvent.GetLogicalParent(element) ??         
                            VisualTreeHelper.GetParent(element);         
                        while ((parent != null) && !(parent is T))         
                        {         
                            parent =         
                                Telerik.Windows.RoutedEvent.GetLogicalParent(parent) ??         
                                VisualTreeHelper.GetParent(parent);         
                        }         
                        return (T)parent;         
                    }         

The FindParentOfType<T> method ALWAYS returns null. I can't get it to return the object that was right clicked. Any suggestions? I would prefer that the right click just selected the node. If there isn't a straightforward way could I trap the right click button down/up events to achieve this?

Thanks!

5 Answers, 1 is accepted

Accepted

answered on 20 May 2010, 08:27 AM

id311571.zip

Hi Jerry,

RadContextMenu has a really useful method called GetClickedElement<T>() that returns the item that is being clicked.

private void ContextMenuOpened(object sender, RoutedEventArgs e)

{

RadContextMenu menu = sender as RadContextMenu;

if(menu != null)

{

RadTreeViewItem clickedItem = menu.GetClickedElement<RadTreeViewItem>();

if(clickedItem != null)

{

clickedItem.IsSelected = true;

}

I've attached a sample project demonstrating this functionality. Give it a try and let me know how it works for you.

All the best,
Kiril Stanoev
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

answered on 21 May 2010, 06:45 PM

Here's a quick code snippet of what I had to do to get right click and multiselect to play nice. In case anyone needs it.

                    ObservableCollection<RadTreeViewItem> lastItemsClicked = new ObservableCollection<RadTreeViewItem>();         

                    void contextMenuFolder_Opened(object sender, RoutedEventArgs e)         
                    {         
                        RadContextMenu rcm = sender as RadContextMenu;         
                        if (rcm != null)         
                        {         
                            RadTreeViewItem clickedItem = rcm.GetClickedElement<RadTreeViewItem>();         
                            if (clickedItem != null)         
                            {         
                                if (!lastItemsClicked.Contains(clickedItem))         
                                {         
                                    foreach (RadTreeViewItem ris in lastItemsClicked)         
                                        ris.IsSelected = false;         
                                    lastItemsClicked.Clear();         
                                }         
                                         
                                clickedItem.IsSelected = true;         
                            }         
                        }         
                    }         