Thematic Maps about cmv-app

[wmbeers]

Feedback from 10/21/2020 meeting:

• Possibly integrate thematic maps into Search
• Suggestion: Add a ‘Search Thematic Maps’ in Saved Maps section to save space and reduce the list of maps

[wmbeers]

Lex reports map viewer ignores SORT_ORDER of T_SAVED_MAP_LAYER. I've confirmed the DWR request to get the layers is returning them in the right order, but then at some point along the line that ordering gets lost. I strongly suspect it's just the nature of async calls I and CMV are making before the last bit where the layer is actually in the map.

Worst case just re-order when all load promises are complete?

[wmbeers]

at some point along the line that ordering gets lost. I strongly suspect it's just the nature of async calls...

Yes, we get as far as _loadSavedMapLayers and we still have the sort order. It calls addLayer, which is an async call, through _onLayerLoad (callback from "load" event handler on the layer). That alone is enough to scramble the order, because a slow one early in the list could take longer to load, pushing to later in the list. To make it worse, we have to then make a call to the server via esriRequest. I think re-sorting at the end is the only viable option, as everything else would be a nightmare of chained calls.

[wmbeers]

I think re-sorting at the end is the only viable option, as everything else would be a nightmare of chained calls.

It's not so easy to re-sort. See _moveUp to see what's involved in just moving one layer one spot.

Test with switching from map.addLayer to map.addLayers.

[wmbeers]

Demonstrated UI improvement to dev team. Feedback: good for WATERSS, but we're going to set up others based on HCMs (I'll work with Eric on this) and will need a hierarchical structure.