[fusion-users] Re: legend.js layer-group show

[Jorge Soria]

Thanks for your help Paul.
I'm working with Mapguide OS 2.1.
The default behaviour is that clicking in a folder you show/hide that folder
(remembering the previous state of that group layers).

What I'm trying to do is that if you click in a folder show/hide the folder
and enable/disable all the layers from that group.

Working with legend.js:

What I do is to intercept the stateChanged event from the folder

    stateChanged: function(obj, event) {
        if (obj.legend && (obj.legend.treeItem instanceof Jx.TreeFolder))
        {
        	if (obj.legend && obj.legend.treeItem.checkBox) {
            	if (obj.legend.treeItem.checkBox.checked) {
                        
                	this.checkTree(obj.legend.treeItem);
                       
            	} else {
                        
                	this.uncheckTree(obj.legend.treeItem);
                       
            	}
        	}
            
        }


        if (obj.legend && obj.legend.treeItem.checkBox) {
            if (obj.legend.treeItem.checkBox.checked) {
                obj.show();
            } else {
                obj.hide();
            }
        }
        OpenLayers.Event.stop(event, true);
    },

  //being:

    checkTree: function(folder) {

        var mapWidget = this.getMap();

        for (var i=0; i<folder.nodes.length; i++) {
            
            var item = folder.nodes[i];
		var layer = mapWidget.aMaps[0].getLayerByName(item.getName());
		layer.show();
            sleep(200);

        }
        mapWidget.redraw();

    },
    uncheckTree: function(folder) {

        var mapWidget = this.getMap();
        
        for (var i=0; i<folder.nodes.length; i++) {
            
            var item = folder.nodes[i];
            var layer = mapWidget.aMaps[0].getLayerByName(item.getName());
            layer.hide();
            sleep(200); 

        }
        mapWidget.redraw();

    },   


This is the way I get better results, but it still has problems activating
folders with a big number of layers.
Sometimes works correctly, but sometimes there are some layers that doesn´t
show or hide when the folder is clicked.

Thanks for your time, Jorge


-- 
View this message in context: http://osgeo-org.1803224.n2.nabble.com/legend-js-layer-group-show-tp5961859p5987889.html
Sent from the Fusion Users mailing list archive at Nabble.com.