Allow showing a list of tilesets in the Tilesets view #3264

Related to issue #3220, but it's interesting you're just asking for a list view, which should be easier than adding categories or tags. In the mockup I see you have both a tab bar and a list view, but I guess if we add a list view it could replace the tabs completely.

Ideally we'd find something that doesn't need to be an option though, and that works for both a few and many tilesets. Also related to issue #3173.

A list view with collapsible/expandable folders would meet just about all of my needs. The tags and search would be great too, but my biggest need is to be able to organize them visually.

Also, if it was possible to pop-in and pop-out the "list" separate from the view of the active tileset, so that we could choose whether it takes up space from the tileset area horizontally, vertically, or not at all - that would also be very very helpful.

In the mockup I see you have both a tab bar and a list view, but I guess if we add a list view it could replace the tabs completely.

I kept the tab bar in the mockup because I couldn't think where else to put the tilesets view options button (the down arrow). There needs to be some way to toggle the view, ideally within the tilesets panel itself, and putting it in that menu seemed like a good option. Perhaps the options can be moved to the bottom of the panel instead, allowing the tab bar to disappear when the list is active.

Ideally we'd find something that doesn't need to be an option though, and that works for both a few and many tilesets.

I suspect this is not possible without using a writing system that can be written both vertically and horizontally xP TIleset names are typically wide, and wide things are most compact horizontally if there are only a few of them, and vertically if there are more than a few. Always using tabs is inconvenient for many tilesets, and always using a list wastes valuable screen space when there are only a few tilesets. And of course there's also just preference - for example, even when I use many tilesets, only 1-2 will be used most of the time, so I'd rather keep the compact tab view and use the current list to navigate them, instead of a list view like in my mock-up. Using some sort of graphical preview instead of names may work for some tilesets, but probably not most, where any one tile may not be distinctive enough or may need to be scaled down into illegibility. Names are easier to control and tweak.

Maybe the tab bar can be made in such a way that it can be dragged by the user and pinned to any of the four sides of the panel. When pinned to the top or bottom, it would be tabs, and when pinned to the left or right, it could be a list. That would eliminate the need for a toggle. Unfortunately, most people would probably not think to drag the bar/list in this way, so this would probably make the feature too hidden.

Also, if it was possible to pop-in and pop-out the "list" separate from the view of the active tileset, so that we could choose whether it takes up space from the tileset area horizontally, vertically, or not at all - that would also be very very helpful.

That could be handy. My gut instinct when GV first asked about this feature was actually to open the Projects view and see if I could filter that by Tilesets (nope) and if I could bring up a tileset in the TIlesets panel from there (apparently not).

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Here's a silly idea: If we ever get that scratch pad panel, one could set up a scratch map with one tile or a few tiles from each tileset, and selecting a tile there would bring up its tileset in the Tilesets panel. This would basically be like a homebrew version of the visual selector that I described, except with more flexibility since the user would have more control over what exactly is used to represent each tileset and how big the representation is.