Don,
The latter solution seems to be the most appropriate to replace my
MouseDelegator subclass.
I would like to avoid keeping a reference to the LayerHandler in my layer,
and retrieving it using the beanContext is a good alternative. Thank you
again !!
Stephane
Le 14:39 13/09/2006,Don Dietrick écrit:
>Hi Stephane,
>
>If you were going to make the call a lot, I'd make your Layer a
>LayerListener and add it to the LayerHandler as such, so it's always
>told of the latest layers being added to the MapBean.
>
>If this is a more intermittent operation and you don't want your
>layer in the LayerEvent notification loop, you could call:
>
>MapHandler mh = (MapHandler) getBeanContext();
>LayerHandler lh = (LayerHandler) mh.get (com.bbn.openmap.LayerHandler.class);
>Layer[] layers = lh.getCurrentLayers();
>
>And get the active layer stack directly from the source.
>
>- Don
>
>
>On Sep 13, 2006, at 4:14 AM, Stéphane Wasserhardt wrote:
>
>>Hi Don,
>>
>>It's exactly the problem. I already found that calling
>>setupMouseModeWithLayers() would solve the problem, but then I have
>>to get the layers array from the layer which want to set new mouse
>>modes ids list.
>>In order to get this array, my layer needs to hold a reference to
>>the layerHandler (since the MouseDelegator doesn't give public
>>access to its "currentLayers" mermber), which is something I'd like
>>to avoid. So this solution is not a really good one for me.
>>That's why the only way I found to call setupMouseModeWithLayers()
>>was to subclass the MouseDelegator in order to add the following
>>methods :
>>
>> public Layer[] getCurrentLayers() {
>> return currentLayers;
>> }
>>
>> public void layersMouseModesChanged() {
>> setupMouseModesWithLayers(getCurrentLayers());
>> }
>>
>>Note that the latter one is not really needed, it's just a helper...
>>
>>The only bad thing about this workaround is that I must ensure I'm
>>using this new MouseDelegator class in my application, and my layer
>>must check if the MouseDelegator is an instance of this class to
>>call the layersMouseModesChanged() method...
>>Maybe adding a "getCurrentLayers()" method in MouseDelegator would
>>be an improvement for future releases ? That's not necessary at all
>>since the layer can get a reference to the layerHandler through the
>>beanMembership... I don't really know what's the best way to handle
>>this...
>>
>>Thank you for your help, and also for the "graphics.create()" hint
>>(for paintListeners) !
>>
>>Stephane
>>
>>Le 23:43 12/09/2006,Don Dietrick écrit:
>>>Hi Stephane,
>>>
>>>It looks like everything gets reset when the layers change in the
>>>MapBean, i.e. when the LayerHandler sends out it's LayerEvent that
>>>the MapBean (and LayerMenu/MouseDelegator) receive.
>>>
>>>You can get the MouseDelegator to reset the ids programatically by
>>>calling setupMouseModeWithLayers(Layer[]).
>>>
>>>- Don
>>>
>>>On Sep 8, 2006, at 9:19 AM, Stéphane Wasserhardt wrote:
>>>
>>>>Hello !
>>>>
>>>>I think there's an issue with the "setMouseModeIDsForEvents" method
>>>>in OMGraphicHandlerLayer.
>>>>
>>>>Here is what I understood :
>>>>
>>>>This method is called in OMGraphicHandlerLayer.setProperty(...),
>>>>that is to say BEFORE the layer is added to the beanContext.
>>>>When the layer is added to the beanContext, an event is fired. This
>>>>event reaches the mouseDelegator which calls its
>>>>"setupMouseModeWithLayers" method. Then the mouseDelegator will
>>>>forward any mouse events to the layer if the current mouse mode id
>>>>is one of the ids given in setMouseModeIDsForEvents.
>>>>The same thing also happens when a new mouseMode is added to the
>>>>beanContext.
>>>>
>>>>Here is the issue I found :
>>>>
>>>>I put all mouseModes and all layers I need in the beanContext.
>>>>AFTER that, I change the mouseModeIDs of one of the
>>>>OMGraphicsHandlerLayers, using setMouseModeIDsForEvents.
>>>>No more layers and no more mouseModes will be added the the
>>>>beanContext after that, so no event will ever reach the
>>>>mouseDelegator.
>>>>The mouseDelegator's setupMouseModeWithLayers method will never be
>>>>called again, that's why the layer will not recieve any awaited
>>>>mouse events :-(
>>>>
>>>>Maybe I'm missing something here...
>>>>If this is a real bug, I don't know how to properly correct it,
>>>>because I'm not used enough to this mechanism.
>>>>I think I will use some kind of workaround for the moment, until I
>>>>recieve some answer from this list...
>>>>So, any comments would be really appreciated! Thanks in advance!!
>>>>
>>>>Stephane
>>>>
>>>>--
>>>>[To unsubscribe to this list send an email to "majdart_at_bbn.com"
>>>>with the following text in the BODY of the message "unsubscribe
>>>>openmap-users"]
>>>
>>>
>>>
>>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>>Don Dietrick, dietrick_at_bbn.com
>>>BBN Technologies, Cambridge, MA
>>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>>>
>>>
>
>
>
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>Don Dietrick, dietrick_at_bbn.com
>BBN Technologies, Cambridge, MA
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
>
>
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Received on Wed Sep 13 2006 - 09:06:20 EDT