[Users] Synchronising LayerTree Node w/ checkbox and Map with aGrid Panel

[Daniel Behr]

thanks Matt,

I had to get the Filter working first, but now I'm stuck again.

this false-Filter works:

featureFilter = new OpenLayers.Filter.Logical({
     type: OpenLayers.Filter.Logical.NOT,
     filters: [new OpenLayers.Filter.Comparison({
	type: OpenLayers.Filter.Comparison.NOT_EQUAL_TO,
	property: "TITLE",
	value: "_"
     })]
});

and instead of attaching the listener to the treePanel, I registered the 
event with the layer:

wfsPlatform.events.register('visibilitychanged', this, function() {
	if (wfsPlatform.visibility) {
	    gridStore.featureFilter = featureFilter
	} else {
	    gridStore.featureFilter = null
	    // (...?...)
	}
});

normally I would have to set the featureFilter=null when visibility is 
true, but that doesnt work. And as with my previous solution, there is 
no sync. after checking and unchecking the layer, the grid still stays 
the same.

Do I have to add something to the if/else statement, or maybe I have to 
register the event also (or only) with the gridPanel listener?

thanks in advance for any further hint
Dan


Am 17.02.2011 15:29, schrieb Matt Priour:
> The issue is that you are looking at 2 totally different things.
> The checkbox for the layer on the tree controls the WFS layer's
> visibility on the map.
> This merely makes the div which hosts the vector features visible or not
> once the features have initially loaded.
> The grid is attached to a FeatureStore synced with the WFS Layer's features.
> When you clear the grid then you are affecting the store and if you have
> the sync direction from layer-to-store only then removing records from
> the store doesn't remove them from the layer.
> If you really want the features to clear from the grid and then return
> in response to the checkbox, then what you should do is apply an always
> false filter to the feature store when you uncheck the layer and remove
> the filter when you check the layer. (I would actually attach that to
> the layer's visibilitychanged event and not the checkbox's events)
> Matt Priour
> Kestrel Computer Consulting
>
> *From:* Daniel Behr <mailto:daniel.behr at hzg.de>
> *Sent:* Thursday, February 17, 2011 4:24 AM
> *To:* users at geoext.org <mailto:users at geoext.org>
> *Subject:* [Users] Synchronising LayerTree Node w/ checkbox and Map with
> aGrid Panel
>
> Hi,
> rather simple question, I guess, but I cant figure it out.
>
> I have a mapPanel and a treePanel, added a WFS Layer with a checkbox to
> the tree and when the box is checked the features are loaded and I see a
> list of features in a grid panel below.
> this works as expected until the box is unchecked. The grid panel is not
> cleared.
>
> adding a listener to the tree config clears the gridpanel but after
> checking the box again the map is updated but the grid stays empty.
>
> listeners: {
> 'checkchange': function(node, checked) {
> if (checked === false) {
> // gridPanel.toggleCollapse()
> gridPanel.removeAll();
> gridPanel.update()
> }
> }
> }
>
> does anyone know of an example where I can look at the code or maybe
> someone can give me a hint what I am missing here?
> thanks
> Dan
> _______________________________________________
> Users mailing list
> Users at geoext.org <mailto:Users at geoext.org>
> http://www.geoext.org/cgi-bin/mailman/listinfo/users