Alternatively, what's a good way to intercept Ctrl...

# compose-desktop

[Aleksandrs Vitjukovs]

Alternatively, what's a good way to intercept Ctrl+Z app-wide? If we have to work with the KeyEvent API (Modifier.onKeyEvent / onPreviewKeyEvent), is there a nice high level way to detect an "Undo" as opposed to Ctrl+Z / Meta+Z?

And finally, what's a good cross-platform way of detecting Ctrl/Cmd+Key? I'm currently checking OS via System.getProperty and looking for a matching modifier key.

[Kirill Grouchnikov]

It’s not just the modifier key. Different platforms do have different key combinations for the “same” action.

[Kirill Grouchnikov]

See Aqua / macOS key bindings in JDK for example - https://github.com/openjdk/jdk/blob/d2260146c9930002e430a874f2585d699dedc155/src/java.desktop/macosx/classes/com/apple/laf/AquaKeyBindings.java - these are defined as explicit key combinations, and not just a “global” modifier override.

[Kirill Grouchnikov]

Versus https://github.com/openjdk/jdk/blob/d2260146c9930002e430a874f2585d699dedc155/src/j[…]va.desktop/share/classes/sun/swing/plaf/WindowsKeybindings.java (and the same for Gtk). Some bindings exist only for one platform, where relevant (in Aqua there are more text navigation actions, for example)