Question on Enhanced Layer List Widget & Feature Layer Tips for Layer visibility

Question

Currently I use both widgets Enhanced Layer List Widget(http://www.arcgis.com/home/item.html?id=58d9bb5693c94918a3934781d7234d18) & Feature Layer Tips widget (http://www.arcgis.com/home/item.html?id=ce63f1bdd5e64068b9a4fadd2028e379).  I would like to know if you turn a zoning layer off (uncheck the layer) and your feature layer will be turn off with a label name "zoning" on your configuration file.  Otherwise, your zoning layer will be on (check the layer).
Can someone show me where to change to code to perform this task?

Thanks.

MayJeff · Answer

Yes, layer 1 is ArcGISDynamicMapServiceLayer and name it "CITYZONING".  I will looks into TOC.as file.  Thanks.

rscheitlin · Answer

May Jeff,

Is layer 1s parent layer an ArcGISDynamicMapServiceLayer? What is its name? Basically in the TOC.as in the registerMapLayer function you would have an if statement that checks if the layer being registered is the parent layer of layer 1 and if so then add an event listener that listens for the visibleLayers property to change and run a function that will search the iList for Layer 1s ID (the number) and if it is not part of the iList then turn off Layer 2. I don't really have time to write a code sample for you.

Here is an example of adding the event listener:ArcGISDynamicMapServiceLayer(layer).visibleLayers.addEventListener(CollectionEvent.COLLECTION_CHANGE, visibleLayersChangeHandler);

MayJeff · Answer

Layer 1 is a sublayer and layer 2 is my feature layer that I used for my feature tooltip widget.
Can you give me some ideas where to add a function that able to check my layer 1 visibility?  You got a lot on your TOC folder and just not sure where to start writing my condition to the code.  Thank you Robert.