Event for when window moves to a new space

[Braden1996]

• Version: 2.6 (62)
• macOS: 10.13.2

I am trying to build a configuration which allows a space to manage the windows it contains. However, I'm unable to find an elegant way to detect when a window has been moved to a different space. The events windowDidMove and windowDidResize do not fire, as I suppose the moved window doesn't actually change size.

Is this possible without continuously polling which windows belong inside which spaces?

Cheers :)

[kasper]

Hi! Unfortunately the only viable option currently is to poll. Apple doesn’t provide really any public APIs for Spaces and if I remember correctly there’s no private one for this either. I’ll be sure to check this again.

[kasper]

Hmm. I wonder if you could use NSAccessibilityFocusedWindowChangedNotification to detect this, i.e. presumably if you move the window, another window will become the focused one for the current space.

[lukesmurray]

Wonder if NSAccessibilityFocusedWindowChangedNotification would allow for detecting loss of window focus. Would love to be able to hide a window when the user clicks away.

[kasper]

@lukesmurray It should, you can try using the windowDidFocus event which is exactly the event mentioned above.

[lukesmurray]

yup! it works 🥳 Love this library

[kasper]

@lukesmurray Thanks! I appreciate the kind words!