This is nicer now every OS Windows doesnt cause a notification. Also
fixes#9034 which was caused by us setting an explicit appearance on the
window when the titlebar is set to a specific color thereby preventing
the views in the window from getting appearance change notifications.
Apple now makes kitty the front most application before sending the
service notification. So instead watch for front most application change
events from the shared workspace and restore focus to the last non-self
application.
Building on macOS 13.3.1 (22E261) clang 14.0.3 (clang-1403.0.22.14.1)
running to errors like #5477 where functions without argument lists at
least need void.
Looking for possible suspect functions via:
git grep -E "^([A-Za-z_]+ )?[A-Za-z_]+\()" \*.c \*.m
For global shortcut to switch the next input source in the macOS system
preferences, final confirmation is only given when all modifier keys are
released.
Bypass cocoa's flagsChanged handling and call handleevent ourselves,
this allows us to know exactly what the IME is doing. Hopefully fixes
issues with IMEs that change state on modifier key presses.
Fixes#4541
Without this, kitty fails to compile:
```
glfw/cocoa_init.m:462:14: error: case value not in enumerated type
'NSEventModifierFlags' (aka 'enum NSEventModifierFlags')
[-Werror,-Wswitch]
case (NSEventModifierFlagShift | NSEventModifierFlagOption):
^
glfw/cocoa_init.m:465:14: error: case value not in enumerated type
'NSEventModifierFlags' (aka 'enum NSEventModifierFlags')
[-Werror,-Wswitch]
case (NSEventModifierFlagShift | NSEventModifierFlagCommand):
^
```
I thought about changing the type of the `modifierFlags` function parameter from `NSEventModifierFlags` to `NSUInteger` since `NSEventModifierFlags` is defined as an enum according to https://developer.apple.com/documentation/appkit/nseventmodifierflags?language=objc and is technically not the proper type for a bit field. But since Apple themselves define `modifierFlags` as `NSEventModifierFlags` according to https://developer.apple.com/documentation/appkit/nsevent/1534405-modifierflags?language=objc, I think the fix in this commit is better.
This warning was introduced with commit f9944e6140.
