[Users] GeoExt LayerContainer with checkbox

[Julien-Samuel Lacroix]

Hi,

I have a Tree with LayerContainers.I want to have a checkbox beside my 
directory that will allow me check/uncheck all the layers in my 
LayerContainer in a single click.

Here's how I do it. Maybe there's a better way, I may have miss something.

{
  text: title,
  layerStore: mapPanel.layers,
  allowDrag: false,
  nodeType: 'gx_layercontainer',
  id: 'layercontainer_'+group,
  leaf: false,
  group: group,
  loader: {
    filter: function(record) {
        return record.get('layer').options.group == group;
    }
  },
  checked: false,
  listeners: {
    'checkchange' :  function(node, checked)
    {
        // If a parent node is unchecked, uncheck all the children
        if (node.getUI().isChecked()) {
            node.expand();
            node.eachChild(function(child){
              child.ui.toggleCheck(true);
            });
        }
        if (!node.getUI().isChecked())
        {
            node.expand();
            node.eachChild(function(child) {
                child.ui.toggleCheck(false);
            });
        }
    }
  },
[...snip...]
}


-- 
Julien-Samuel Lacroix
Mapgears
http://www.mapgears.com/