Trigger an event when focus changes about active-win

[bencevans]

Not ideal but I ended up polling and emitting an event if the data changed from the previously cached data... https://github.com/bencevans/active-app-watcher#readme

[bencevans]

Python implementation https://stackoverflow.com/questions/23786289/how-to-correctly-detect-application-name-when-changing-focus-event-occurs-with for linux using xlib

[sindresorhus]

Some more resources:

• https://github.com/seanhess/VIntage/blob/master/FocusObserver.m
• https://developer.apple.com/reference/coregraphics/cgscreenrefreshcallback
• https://stackoverflow.com/questions/347396/how-can-i-use-cocoas-accessibility-api-to-detect-that-a-window-is-brought-to-fr
• https://stackoverflow.com/questions/853833/how-can-my-app-detect-a-change-to-another-apps-window

[Pandakls]

That kind of event emitter would be awesome.

[sindresorhus]

@Pandakls Your comment doesn't add anything to the conversation. In the future, please use GitHub reactions instead.