Hello!If anyone's interested, I was able to develop a data grid component that allows the user to turn map layers on and off, sourcing from multiple tiled and dynamic map services (with a good kick start by the example I linked to in my previous post - thanks!).For the Data Grid<?xml version="1.0" encoding="utf-8"?>
<mx:DataGrid xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationComplete="populateArray()">
<fx:Script>
<![CDATA[
import com.esri.ags.Map;
import com.esri.ags.layers.ArcGISDynamicMapServiceLayer;
import com.esri.ags.layers.ArcGISTiledMapServiceLayer;
import com.esri.ags.layers.Layer;
import com.esri.ags.layers.supportClasses.LayerInfo;
import mx.collections.ArrayCollection;
import mx.controls.Alert;
import mx.utils.ObjectUtil;
private var _map:Map;
private var dp:ArrayCollection = new ArrayCollection();
public function get map():Map
{
return _map;
}
public function set map(value:Map):void
{
_map = value;
}
private function populateArray():void
{
var NumLayers:int = _map.layerIds.length;
var mapLayer:Layer = new Layer();
var layerInfos:Array = new Array();
for (var i:int=0; i<NumLayers; i++)
{
mapLayer = (_map.getLayer(_map.layerIds));
if (mapLayer.className == 'ArcGISDynamicMapServiceLayer')
{
layerInfos = ArcGISDynamicMapServiceLayer(mapLayer).layerInfos;
var infoArrayLength:int = layerInfos.length;
for (var n:int; n<infoArrayLength; n++)
{
dp.addItem({name: layerInfos.name, defaultVisibility: layerInfos.defaultVisibility, mapType: mapLayer.className, mapID: mapLayer.id, layerID: layerInfos.id});
}
}
else if (mapLayer.className == 'ArcGISTiledMapServiceLayer')
{
dp.addItem({name: mapLayer.id, defaultVisibility: mapLayer.visible, mapType: mapLayer.className, mapID: mapLayer.id})
}
}
setDataProvider();
}
private function setDataProvider():void
{
dataProvider = dp;
}
public function showLayer(layerIndex:int):void
{
if (dp[layerIndex].mapType == 'ArcGISTiledMapServiceLayer')
{
_map.getLayer(dp[layerIndex].mapID).visible = true;
}
else if (dp[layerIndex].mapType == 'ArcGISDynamicMapServiceLayer')
{
var visibleLayers:ArrayCollection = (ArcGISDynamicMapServiceLayer(_map.getLayer(dp[layerIndex].mapID)).visibleLayers)
visibleLayers.addItem(dp[layerIndex].layerID);
}
}
public function hideLayer(layerIndex:int):void
{
if (dp[layerIndex].mapType == 'ArcGISTiledMapServiceLayer')
{
_map.getLayer(dp[layerIndex].mapID).visible = false;
}
else if (dp[layerIndex].mapType == 'ArcGISDynamicMapServiceLayer')
{
var visibleLayers:ArrayCollection = (ArcGISDynamicMapServiceLayer(_map.getLayer(dp[layerIndex].mapID)).visibleLayers)
var idIndex:int = visibleLayers.getItemIndex(int(dp[layerIndex].layerID));
if (idIndex != -1)
{
visibleLayers.removeItemAt(idIndex);
}
}
}
private function removeBusyCursor(event:Event):void
{
cursorManager.removeBusyCursor();
}
]]>
</fx:Script>
<mx:columns>
<mx:DataGridColumn dataField="defaultVisibility" headerText="Visibility" width="70" itemRenderer="components.LayerVisibilityRenderer"/>
<mx:DataGridColumn dataField="name" headerText="Layer Name"/>
</mx:columns>
</mx:DataGrid>For the Renderer<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" horizontalAlign="center"
implements="mx.controls.listClasses.IDropInListItemRenderer">
<fx:Script>
<![CDATA[
import com.esri.ags.layers.supportClasses.LayerInfo;
import mx.controls.Alert;
import mx.controls.listClasses.BaseListData;
private var _listData:BaseListData;
public function get listData():BaseListData
{
return _listData;
}
public function set listData(value:BaseListData):void
{
_listData = value;
}
private function clickHandler(event:MouseEvent):void
{
var layerIndex:int = listData.rowIndex;
if (cb.selected)
{
LayerVisibility(listData.owner).showLayer(layerIndex);
}
else
{
LayerVisibility(listData.owner).hideLayer(layerIndex);
}
}
]]>
</fx:Script>
<mx:CheckBox id="cb" selected="{data.defaultVisibility}" click="clickHandler(event)"/>
</mx:HBox>Have a lovely Wednesday!- Amy Smith
