topic Do not show item in LayerList in ArcGIS JavaScript Maps SDK Questions

Do not show item in LayerList

GregoryBologna — Thu, 18 Apr 2019 23:00:06 GMT

JS 4.11

I am looking for a way to loop through the layers before they get added to my LayerList object and hide some layers.

I can use listItemCreatedFunction: function (event) { } to access the layers and sublayers, but setting layer items visible to false does not work.

I tried using LayerListViewModel but I could not find documentation on the class, and it just blows up on function not found.

const layerListViewModel = new LayerListViewModel()({
view: view
});

layerListViewModel.listItemCreatedFunction = function (event) {

}

https://developers.arcgis.com/javascript/latest/api-reference/esri-widgets-LayerList-LayerListViewModel.html

Re: Do not show item in LayerList

KellyHutchins — Thu, 18 Apr 2019 23:40:51 GMT

You'll want to use the listMode property on the layer in order to hide it from the list:

https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-Layer.html#listMode

Re: Do not show item in LayerList

KenBuja — Fri, 19 Apr 2019 13:29:59 GMT

This thread shows how to do that with a map scene.https://community.esri.com/thread/232289-remove-layers-from-the-layerwidget

Re: Do not show item in LayerList

GregoryBologna — Fri, 26 Apr 2019 12:22:33 GMT

Thanks. I implemented this code to hide subitems.

if (item.layer.allSublayers && item.layer.allSublayers.length > 0) {

item.layer.allSublayers.forEach(function (item) {

if (item.sublayers && item.sublayers.length > 0) {

item.sublayers.forEach(function (item) {

item.listMode = "hide";

});

}

});

}

Re: Do not show item in LayerList

NicoKroes — Wed, 22 Jul 2020 21:10:16 GMT

Is there a way to hide layers in the LayerList widget in ArcGIS API for Javascript in the 3.23 version of the API? I do not believe that the listMode property is available on ArcGIS API for Javascript in the 3.23 version.