Layer List

MathewSuran

Can anyone lend their expertise on how to edit what layers are displayed under the layerlist?  I have an app that is 95% complete and their are 4 layers that are no longer functioning that I want to remove from the list.  The app was prebuilt but not finished and I have been tasked to complete it.  I have figured out most of the coding on my own as I have been going along.  I can post whatever code you need to assist.  I know this is vague but hopefully someone is knowledgeable in this area.  Thanks!

MathewSuran

//Create a menu with a list of operational layers. Each menu item contains a check box
//that allows users to toggle layer visibility. 
function addLayerList(layers, operational) {
    var layerList = buildLayerVisibleList(layers, operational);
    if (layerList.length > 0) {
        //create a menu of layers
        //layerList.reverse();
        var menu = new dijit.Menu({
            id: 'layerMenu'
        });
        menu.addChild(new dijit.CheckedMenuItem({
            label: "Elevation",
            checked: false,
            onChange: function () {
                var e1 = map.getLayer("Elevation");
                e1.setVisibility(!e1.visible);
                var e2 = map2.getLayer("Elevation");
                e2.setVisibility(!e2.visible);
            }
        }));    
        menu.addChild(new dijit.CheckedMenuItem({
            label: "Water Depth",
            checked: true,
            onChange: function (checked) {
                for (var i = 0; i < SBDLayers.length; i++) {
                    SBDLayers.setVisibility(checked);
                    var e2 = map2.getLayer(SBDLayers.id);
                    e2.setVisibility(checked);
                }
            }
        }));
        menu.addChild(new dijit.CheckedMenuItem({
            label: "Dune Susceptibility",
            checked: true,
            onChange: function (checked) {
                for (var i = 0; i < SBDELayers.length; i++) {
                    SBDELayers.setVisibility(checked);
                    var e2 = map2.getLayer(SBDELayers.id);
                    e2.setVisibility(checked);
                }
            }
        }));                    
        dojo.forEach(layerList, function (layer) {
            menu.addChild(new dijit.CheckedMenuItem({
                label: layer.title,
                checked: layer.visible,
                onChange: function (checked) {
                    if (!operational) {
                        var e2 = map2.getLayer(layer.layer.id);
                        e2.setVisibility(checked);
                        layer.layer.setVisibility(!layer.layer.visible);
                    } else if (layer.layer.featureCollection) {
                        //turn off all the layers in the feature collection even
                        //though only the  main layer is listed in the layer list 
                        dojo.forEach(layer.layer.featureCollection.layers, function (layer) {
                            layer.layerObject.setVisibility(!layer.layerObject.visible);
                        });
                    } else {
                        layer.layer.setVisibility(!layer.layer.visible);
                    }

                }
            }));
        });
        var button = new dijit.form.DropDownButton({
            label: i18n.tools.layers.label,
            id: "layerBtn",
            iconClass: "esriLayerIcon",
            title: i18n.tools.layers.title,
            dropDown: menu
        });
        dojo.byId('webmap-toolbar-center').appendChild(button.domNode);
    }
}

//build a list of layers for the toggle layer list - this list
//is slightly different than the legend because we don't want to list lines,points,areas etc for each
//feature collection type. 
function buildLayerVisibleList(layers, operational) {
    var layerInfos = [];
    dojo.forEach(layers, function (mapLayer, index) {
        if (mapLayer.featureCollection && !mapLayer.layerObject) {
            if (mapLayer.featureCollection.layers) {
                //add the first layer in the layer collection... not all  - when we turn off the layers we'll 
                //turn them all off 
                if (mapLayer.featureCollection.layers) {
                    layerInfos.push({
                        "layer": mapLayer,
                            "visible": mapLayer.visibility,
                            "title": mapLayer.title
                    });
                }
            }
        } else if (mapLayer.layerObject) {
            layerInfos.push({
                layer: mapLayer.layerObject,
                visible: mapLayer.layerObject.visible,
                title: mapLayer.title
            });
        } else if (!operational) {//reallayers
            if (mapLayer.id.indexOf("SBD-") === -1 && mapLayer.id.indexOf("SBDE-") === -1 && mapLayer.id.indexOf("Elevation") === -1) {
                layerInfos.push({
                    "layer": mapLayer,
                    "visible": mapLayer.visible,
                    "title": mapLayer.title || mapLayer.displayname || mapLayer.name || mapLayer.folders[0].name
                });
            }            
        }
    });
    return layerInfos.sort(function(a,b){
        return (a.layer.id < b.layer.id) ? -1 : 1;
    });
}