Jackie,
you have two choices
1) in your template (which you don't want but which I am including for
completeness and also because widgets will work with selections in
much the same way)
Fusion.registerForEvent(Fusion.Event.FUSION_INITIALIZED, function() {
var map = Fusion.getMapByIndice(0); // or getMapById()
map.registerForEvent(Fusion.Event.MAP_SELECTION_ON, handleSelection);
map.registerForEvent(Fusion.Event.MAP_SELECTION_OFF, clearSelection);
});
function handleSelection() {
var map = Fusion.getMapByIndice(0);
map.getSelection(selectionCallback);
}
function selectionCallback(sel) {
// sel is a selection object with a collection of
SelectionObject.Layer objects
for (var i=0; i<sel.getNumLayers(); i++) {
var selLayer = sel.getLayer(i);
// selLayer has:
// getName, getNumElements, getNumProperties, getPropertyNames,
getPropertyTypes, getElementValue
}
}
function clearSelection() {
// the user cleared the selection
}
2) in a widget
/* a widget that loads a url in the task pane when a selection is made
* <Widget>
* <Name>SomeId</Name>
* <Type>MySelectionHandler</Type>
* <Extension>
* <Target>TaskPane</Target>
* <Url>path/to/my/code</Url>
* </Extension>
* </Widget>
*/
Fusion.Widget.MySelectionHandler = OpenLayers.Class(Fusion.Widget, {
target: null,
url: null,
initializeWidget: function(widgetTag) {
var json = widgetTag.extension;
this.target = json.Target ? json.Target[0] : "TaskPane";
this.url = json.Url ? json.Url[0] : null;
this.getMap().registerForEvent(Fusion.Event.MAP_SELECTION_ON,
OpenLayers.Function.bind(this.selectionOn, this));
this.getMap().registerForEvent(Fusion.Event.MAP_SELECTION_OFF,
OpenLayers.Function.bind(this.selectionOFf, this));
},
selectionOn: function() {
if (this.url) {
var taskPaneTarget = Fusion.getWidgetById(this.target);
if (taskPaneTarget) {
var map = this.getMap();
var mapLayers = map.getAllMaps();
var params = [];
params.push('LOCALE='+Fusion.locale);
params.push('SESSION='+mapLayers[0].getSessionID());
params.push('MAPNAME='+mapLayers[0].getMapName());
params.push('POPUP=false');
if (url.indexOf('?') < 0) {
url += '?';
} else if (url.slice(-1) != '&') {
url += '&';
}
url += params.join('&');
taskPaneTarget.setContent(url);
}
}
},
selectionOff: function() {
}
});
The only problem with this widget is that it is not included in the
application by default, which is a limitation I hope to fix some time,
so you need to include <div id="SomeId"></div> in your template. Or,
actually, you can add it to a toolbar or menu
<Item>
<Function>Widget</Function>
<Widget>SomeId</Widget>
</Item>
and it will be created with no UI
Hope this works (untested though) or at least gets you going in the
right direction.
Cheers
Paul
On 22-Jul-09, at 9:04 PM, Jackie Ng wrote:
>
> Hi All,
>
> We have maps where we need to perform an action (load a url in the
> task
> pane) in response to a map selection.
>
> In the AJAX viewer, it would be a simple case of hooking into the
> viewer
> events and overriding the selection handler
> (
http://trac.osgeo.org/mapguide/wiki/CodeSamples/JavaScript/AJAXViewerEventHooking
> )
>
> But in Fusion, with its template and widget driven approach, this
> seems to
> be a bad idea. So, short of hacking each template to support this
> functionality (worst case), it is possible to make a "startup"
> widget that
> listens to the widget events I'm after and bind them to inline code
> also
> defined in the widget. Sort of like a automatic InvokeScript?
>
> - Jackie
> --
> View this message in context:
http://n2.nabble.com/Startup-widgets-possible--tp3306936p3306936.html> Sent from the Fusion Users mailing list archive at Nabble.com.
> _______________________________________________
> fusion-users mailing list
> fusion-users@lists.osgeo.org
>
http://lists.osgeo.org/mailman/listinfo/fusion-users__________________________________________
Paul Spencer
Chief Technology Officer
DM Solutions Group Inc
http://research.dmsolutions.ca/_______________________________________________
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