Prosemirror does not handle DOM focus events

[Gozala]

Issue details

If focus event is dispatched on one of nodes with-in the editor prosemirror does not handle it. For example if there is a tabindex attribute present on the paragraph or heading nodes using Tab / Shift-Tab key combination dispatches focus event on a corresponding node (which does not bubble up if container is focused) so prose-mirror does not handle it in any way.

It is also won't make it into handleDOMEvents for the same reason.

Steps to reproduce

Here is an example that adds tabindex=0 attribute to the paragraph and heading nodes
https://glitch.com/edit/#!/join/a592d66e-470c-4c5d-a7d9-9c351aae426d

If you press Tab / Tab-Shift you'll see an outline appearing on o corresponding node but selection will remain in it's original location.

I would expect Tab / Tab-Shift to update selection so that content of the corresponding paragraph / heading is selected.

ProseMirror version

"prosemirror-view": "1.2.0"

Affected platforms

• Chrome
• Firefox
• Internet Explorer
• Other

[marijnh]

ProseMirror's focus handling concerns focus of its top-level editable node. Focus on children of that is intentionally not handled—and setting a tabindex on a paragraph isn't something the system supports.

[marijnh]

Closing as out of scope—the project assumes a single focusable editor, and I'm not even sure how a different approach would work.