[Users] How to register different "dblclick" listener on BaseLayerContainer and OverlayLayerContainer

[Yingqi Tang]

Hi all,

In my GeoExt web app I have created a TreePanel, in which I have both a
BaseLayerContainer and OverlayLayerContainer as its children. This is the
JSON config:

layerTreeJsonConfig = [
        {    // baselayer container
            nodeType: "gx_baselayercontainer",
            text: 'basemap'
        },
        {    // overlayer container
            nodeType: "gx_overlaylayercontainer",
            text: 'overlays',
            expanded: false,
            // render the nodes inside this container with a radio button,
            // and assign them the group "overlayers".
            loader: {
                baseAttrs: {
                    radioGroup: "overlayers",
                    uiProvider: "layernodeui"
                }
            }
        }
    ];

I know and I was able to register "dblclick" listener on the TreePanel, now
my question is whether there is a way to register different event handler on
those two different layer container? The reason I am asking is that I am
trying to another custom layer container which inherits from
OverlayLayerContainer, and I would like wrap some event handler inside that
custom layer container instead of adding it on TreePanel for all.

Thanks.
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