Feature: on-focus-changed callback

[nikitabobko]

AeroSpace already has two callbacks: on-window-detected and exec-on-workspace-changed

It'd be cool to have one more callback to track when the focus changes

[garo]

I have another use case where this would probably be useful: I'd like to define a minimum window size for some applications, so that on-focus event would enlarge the app window to be at least the defined minimum size. I guess this would also require an additional command or an option to resize command to support the at-least principle.

[nikitabobko]

@garo why can't you use on-window-detected for that? Set the minimum size once and don't touch it anymore

[garo]

@garo why can't you use on-window-detected for that? Set the minimum size once and don't touch it anymore

I have this especially with how I'm using Slack: I like to keep Slack in one Workspace together with a browser and I'm often shrinking Slack to have more space for the browser. Then when I do focus Slack I'd like it to grow bigger. I've just switched from Amethyst and that somehow supported this out-of-the-box and I noticed I'm missing this feature. I figured out I probably could emulate this with the hypotechical on-focus callback and move command.