Sure - right now the mouse event flow goes from the MapBean ->
(MapMouseMode using its MapMouseModeSupport) -> (Layer using its
MapMouseListener/StandardMapMouseInterpreter).
The popup menu is being managed at the StandardMapMouseInterpreter
level, which doesn't know anything about other layers or Interpreters.
My suggestion was modifying the MapMouseModeSupport to handle the
popups. Off the top of my head, there are two ways you could do this.
- You could modify the MapMouseListener API and have the
MapMouseListenerSupport determine when a right-mouse click occured and
make calls into all the layers/interpreters to be filled.
- You can modify the MapMouseModeSupport to check the MapMouseEvent for
a new variable containing items returned from the layers, and if it's
not null, present the popup.
I was describing the second option below because it doesn't have an API
change.
So basically, the StandardMapMouseInterpreter already knows when to ask
for menu items. If it gets anything back, it can add that list in a new
method on the MapMouseEvent.
When the MapMouseSupport has finished with calling the MapMouseListeners
with the current MapMouseEvent (mouseReleased), it would check the list
in the MapMouseEvent and present a popup if the list isn't null and empty.
That might also require some calculations to figure out when the popup
should be hidden (not on more mouse movements, but on another
mousePressed(), maybe)?
Hope this helps,
Don
Adams Tan wrote:
> Hi Don,
>
> I am facing almost exactly the same issue, and I don't quite understand
> you workaround solution. Could you elaborate?
>
> Adams
>
> On Wed, Apr 30, 2008 at 12:32 AM, Don Dietrick <dietrick_at_bbn.com
> <mailto:dietrick_at_bbn.com>> wrote:
>
> Hi Kennedy,
>
> The StandardMapMouseInterpreter is limiting you, the object assigned
> to the OMGraphicHandlerLayer to manage MouseEvents. It creates a
> new JPopupMenu for the layer in response to a right click, and
> there's probably something in awt that is getting confused with
> multiple JPopupMenus being created.
>
> To get what you want, I think the MapMouseSupport and
> StandardMapMouseInterpreter need to be modified so that the
> MapMouseSupport makes the call for the JPopupMenu, based on the
> items that the StandardMapMouseInterpreters return.
>
> What might work well would be to add a variable slot in the
> MapMouseEvent object to contain a list of Components for the menu.
> If the MouseMode detects that list is not null after it has been
> passed to the layers, it would display a popup. So MapMouseSupport,
> MapMouseEvent and StandardMapMouseInterpreter would need to be
> modified, and that would be it.
>
> If you want to take a shot at these updates, that would be great.
> Otherwise, I'll add them to my todo list.
>
> - Don
>
>
> On Apr 29, 2008, at 9:32 AM, Davidian wrote:
>
>
> Please hear me out, I've read the other posts on this subject,
> but they don't
> seem to be addressing the same exact problem.
>
> I have two layers that extend OMGraphicHandlerLayer (let's call
> them layer
> Alpha and layer Beta). In both of these layers I have
> overridden the
> getItemsForMapMenu() method and return a List of JMenuItem
> objects from
> each.
>
> The problem is, when I right click on a spot on the map the
> popup menu that
> is displayed only contains the menu items for one of the layers
> (Alpha), not
> both. If I remove the Alpha layer from the map, the menu items
> for Beta are
> displayed in the popup menu.
>
> NOTE: This is not a problem with the mouse events being
> consumed by the
> Alpha layer. I have put debug (System.out calls) in the
> getItemsForMapMenu
> method in the Beta layer, and when I right click on the map I
> see a menu
> with the menu items from the Alpha layer, but the System.out
> calls are
> getting written out from the Beta layer.
>
> So, how do I make my right click menu contain the menu items
> from all of my
> layers (in this case, Alpha and Beta)?
>
> Thanks in advance...
>
> -Kennedy
> --
> View this message in context:
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> Sent from the OpenMap mailing list archive at Nabble.com.
>
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>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Don Dietrick, dietrick_at_bbn.com <mailto:dietrick_at_bbn.com>
> BBN Technologies, Cambridge MA
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
>
>
>
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Received on Fri Jul 25 2008 - 13:40:49 EDT