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[JFACE] MenuManager context menu has wrong parent when dragging a view outside the workbench [message #333167]

Thu, 27 November 2008 10:44

Laurent Marchal

Messages: 91
Registered: July 2009

Member

Hello,

I needed to create dynamics context menu in my RCP application. I have
3 specialized MenuManagers already filled that i can use in different views.

My problem is that i have a TreeViewer and depending on the item
selected i set the good menu.

it looks like :

// create SWT menus
Menu1 = MenuManager1.createContextMenu(TreeViewer.getControl());
Menu2 = MenuManager2.createContextMenu(a TreeViewer.getControl());
Menu3 = MenuManager3.createContextMenu(a TreeViewer.getControl());

// call setMenu() to set the good menu depending on the item selected
TreeViewer.getControl().addMenuDetectListener(new MenuDetectListener() {
public void menuDetected(MenuDetectEvent e) {
if (selectedItem == 1) {
TreeViewer.getControl().setMenu(Menu1);
} else if (selectedItem == 2)
TreeViewer.getControl().setMenu(Menu2);
} else if (selectedItem == 3) {
TreeViewer.getControl().setMenu(Menu3);
}
}
});

The problem is when i drag the view outside the workbench, I get
java.lang.IllegalArgumentException: Widget has the wrong parent

because the setMenu(Control control) method look at the parent shell of
the control and it has changed because the dragged view is in a new shell.

Does anyone can explain me if i am doing it the wrong way ?

Thanks
Laurent.

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