Executed when the right mouse button is clicked. The default implementation of this method auto-creates a Menu
from the contextMenu
property on this component and then calls Menu.showContextMenu()
on it to show
it. If you want to show a standard context menu, you can simply define your Menu and set it as the contextMenu
property on your component - you do not need to override this method.
If you want to do some other processing before
showing a menu or do something else entirely, then you should override this method. Note that the return value from
this method controls whether or not the native browser context menu is shown.
- Parameters:
handler
- the showContextMenu handler
- Returns:
HandlerRegistration
used to remove this handler