Expose glyphMargin support to extensions

[eamodio]

It would be great if extension were able to use the built-in glyphMargin decorations -- i.e. clickable decorations in the gutter.

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• [decorations] Support hover decorations over the line numbers (i.e. gutter) (#28080)
• Show resource decorations in more locations (#37588)

[eamodio]

Is this something a PR would be accepted for? /cc @jrieken

[jrieken]

cc @alexandrudima

[alexdima]

The glyph margin is problematic because we have potentially N decorations fighting for the rendering space of 1 decoration. It is unclear when N > 1 which of the decorations should win (in terms of rendering and of interaction).

[Relequestual]

What I would like to personaly see is the ability to modify the default click action (via settings of course).
I don't need click for breakpoint, but I WOULD like click to add bookmark.

[Relequestual]

It LOOKS like extensiosn CAN already put glyphs in the margin, so THAT isn't an issue anymore.

[connectdotz]

It LOOKS like extensiosn CAN already put glyphs in the margin, so THAT isn't an issue anymore.

@Relequestual can you share which api does this?

[ppezaris]

The glyph margin is problematic because we have potentially N decorations fighting for the rendering space of 1 decoration. It is unclear when N > 1 which of the decorations should win (in terms of rendering and of interaction).

perhaps this could be solved with an indicator that there are multiple glyphs, and then when the mouse hovers over, fan them out so they can be selected individually. we actually implemented something like this in the Atom editor years ago and it worked out very well.

[eamodio]

See #114776