Placeholder for the key-or-macro input

[sezanzeb]

I think there is no placeholder text functionality for textviews (which is the kind of component that sourceview uses). So the editor component needs some extra logic to insert placeholder-text into itself, and to remove it when clicking into the textview. Furthermore, when the placeholder-text is written in it, it should just treat itself as empty and not emit any events.

I think this one is quite important.

#649 (comment)

[sezanzeb]

well, turns out if you set a placeholder text and then do set_text on the buffer, gtk will emit a "changed" event with an empty string before emitting another one with the target string for good measure. I don't know if this is something inputremapper screws up, or if gtk is to blame.

[sezanzeb]

#658