Dynamic Context in Tree. How to Prevent show after Event ?

[Mebel]

Hello,

i have a dynamic context menu on each node. Sometime its to possible to get a context menu without any items. Sadly the context menu show a clear rect on the screen.


How its possible to prevent this ?

Here my Code:

 Menu contextMenu = new Menu();
       tree.addListener(Events.ContextMenu, new Listener<ComponentEvent>() {
            public void handleEvent(ComponentEvent be) {
                Object selectedObject = tree.getSelectionModel().getSelectedItem();

                Menu contextMenu = cfactory.createContextMenuselectedObject);
                addNewEntriesMenu(contextMenu,selectedObject);

                if (contextMenu.getItemCount()==0) {
                    //tree.setContextMenu(null); // cant set to null cause no more events fired.
                    // add usefull thing here to prevent show contextmenu 
                }
                tree.setContextMenu(contextMenu);
            }
        });
        tree.setContextMenu(contextMenu);

[sven]

You can simple cancel the Events.ContenxtMenu event if you dont want to open the menu.

[Mebel]

Hello Sven,

fast reply thx.
this code doesnt work. Any idea.

if (contextMenu.getItemCount()==0) {
    be.stopEvent();
    be.getEvent().stopPropagation();
    return;
}

regards
me

[sven]

because you have not cancelled it. None of the methods you called contain the word cancelled

what about

be.setCancelled(true);

[Mebel]

yes looks like a self created easter egg.

Work well now. thx.

Happy Easter
me