urlUtils: Add remaining Map Viewer URL support for layers

[esri]

urlUtils: Add remaining Map Viewer URL support for layers

[bsvensson]

I'm pretty sure 4.x MapViewer will continue to support the same params. Keep in mind that the MapViewer is both a viewing and creating tool (as in creating webmaps), while the templates are primarily for viewing (webmaps/webscenes). So I think it makes sense that things like basemapUrl are not supported in templates/apps (that don't create webmaps).

Note that WAB also has (pretty similar) viewing-ish URL parameters:
http://doc.arcgis.com/en/web-appbuilder/manage-apps/app-url-parameters.htm and https://developers.arcgis.com/web-appbuilder/guide/xt-app-url-parameters-for-dev.htm.

I think it's beneficial for the platform to keep app URL params consistent, which we've been trying to do for a while :)

[driskull]

Yeah, I think we talked about adding these at some point right @kellyhutchins ? Is this something we want to do?

[kellyhutchins]

I'm on the fence. I think it would require a ton of code for dealing with all the potential layer types. Not sure we want to take that on?

[driskull]

yeah, that's true. Maybe we don't have to support ALL the online viewer URL params. Only the ones we want to. It would be a pain to have to write a class that adds every layer type to a map. Seems like we would just want to promote WebMaps instead of this.

[bsvensson]

Seems like we would just want to promote WebMaps instead of this.

+1

[alaframboise]

I guess I was just thinking the base should support all of the Map Viewer's params since it is essentially providing a "standard base" for all future templates. Right now it supports most of them.

I guess the question is: Will the 4.x Map Viewer even use these params? If not I maybe we should remove all params support from the base and just let app template developers define their own at the app-level.

[driskull]

So I think it makes sense that things like basemapUrl are not supported in templates/apps (that don't create webmaps).

I agree. I'll remove the basemap setting functions.