Allow the "Enter" key to press the "Open" button

[hardBSDk]

Like all other xdg-desktop-portal implementations.

[hardBSDk]

@mmstick Does #56 also implemented for the file picker?

[mmstick]

No, just the screenshot overview

[hardBSDk]

@PhantomShift Can you implement this for the file picker?

[PhantomShift]

I only implemented #56 since it was super trivial to add, but since I was specifically mentioned, I will ask the clarifying question, what exactly do you mean "Allow the enter key to press the open button"? When I initially read this I assumed it meant opening files in cosmic-file with the enter button but that already works (albeit with some broken xdg mime types, opening binaries for example does not attempt to execute them), and I'm not very familiar with the freedesktop spec so I'm not sure what the title of this issue is referring to.

[PhantomShift]

Ah I see now that although it shares code, the file picker is actually distinct from the cosmic-files application and currently doesn't implement any hotkeys/keyboard navigation.

[hardBSDk]

@PhantomShift I mean the "Open" button from the file picker dialog, maybe the confirmation button has other names based on the program context.