[OpenLayers-Users] Re: Bug in select/unselect cluster feature and zoom in and out?

[jkm]

Making a little research on that..

I've seen that there is a ticket that seems to be similar to my issue..

http://trac.osgeo.org/openlayers/ticket/1806

Could this be related?

Thanks!



El 28 de març de 2012 17:04, jkm <rifins at gmail.com> ha escrit:

> Hi,
>
> I would like to know if I'm doing something wrong, or not..
>
> I have a cluster strategy associated to a vector layer.. And I select and
> unselect features  with the "selectCtrl":
>    selectCtrl = new OpenLayers.Control.SelectFeature(layerTest, {
> onSelect: onFeatureSelect, onUnselect: onFeatureUnselect });
>    map.addControl(selectCtrl);
>    selectCtrl.activate();
>
> When I select a feature I do:
>
> function onFeatureSelect(feature) {
>     selectedFeature = feature;
>     if (currentPopup) currentPopup.hide();
>     if (!feature.cluster) {
>         if (!feature.popup) {
>             popup = new OpenLayers.Popup.FramedCloud("chicken",
> feature.data.point, null, feature.data.info, null, true, onPopupClose);
>             feature.popup = popup;
>         }
>         else { popup = feature.popup; }
>     }
>     else {
>         var txt = 'Clustered feature';
>         if (!feature.popup) {
>             popup = new OpenLayers.Popup.FramedCloud("chicken",
> feature.cluster[0].data.point, null, txt, null, true, onPopupClose);
>             feature.popup = popup;
>         }
>         else { popup = feature.popup; }
>     }
>     map.addPopup(popup);
>     currentPopup = popup;
> }
>
> What I pretend is to show a popup indicating the information of a single
> point, or indicate that the point is a cluster of different features.
>
>
> When I unselect a feature, I do:
>
> function onFeatureUnselect(feature) {
>     if (currentPopup) {
>         currentPopup.hide();
>     }
>     if (currentPopup = feature.popup) {
>         map.removePopup(feature.popup);
>         feature.popup.destroy();
>         feature.popup = null;
>         currentPopup = undefined;
>     }
> }
>
> If the feature has an associated popup, I destroy it.
>
> But, if I show a popup for a feature and I zoom in or out making feature
> changing (because there are more features clustered, or on the other side,
> the cluster doesn't exist anymore), when I unselect the feature, I get an
> error in Openlayers.js, in the unhighlight function:
> "layer.drawFeature(feature,feature.style||feature.layer.style||"default");"
> And this is due to the feature.layer is null...
>
> I don't know if i'm definig something in a bad way, or what is happening
> here.. Any help will be apreciated.
>
> Thanks!
>
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