Tooltips for layer view drawer

[jfitzpatrick17]

Description

It isn't obvious to some users that layers can be expanded (to reveal layer descriptions, style settings/legends and filters). Being able to add tooltips to a layer would enable users to access information about a layer, before having to expand. It would also help to reduce the space taken up in the left-hand panel (from layer descriptions in the meta).

On a mobile, layer tooltips could be disabled.

Type of Issue

• ✅ New Feature

[dbauszus-glx]

We can add tooltips but we cannot replace the meta tag.

• This would break legacy support.
• The meta tag can include html, a tooltip cannot.
• Tooltips are not avilable on touch screen.

At best this will add complexity but won't get rid of the meta tag.

[simon-leech]

I agree we have to leave meta as is.

I think this is actually larger than just for layers, it should work for layer groups and infoj groups too.

I propose adding these flags
LayerTooltip:"Text",
GroupTooltip: "Text".

LayerTooltip would just add the tooltip icon (as is currently supported on an infoj entry) next to the layer title.

GroupTooltip when applied on a layer would add the tooltip icon next to the layer drawer group title.

GroupTooltip when applied in the infoj would add the tooltip icon next to the infoj drawer group title.