On Sat, 23 Jan 2021 15:40:04 GMT, Kevin Rushforth <[email protected]> wrote:
> The JavaFX API does not provide a way to get the state of CAPS LOCK or NUM
> LOCK on the keyboard. Being able to read the lock state would allow an
> application to inform the user that caps lock was enabled for passwords or
> other usages where the keyboard input might not be echoed. It would also
> allow an application to do spell checking / auto-correction that might
> ordinarily be skipped when typing all upper-case letters.
>
> We need an equivalent JavaFX API to the existing AWT
> `java.awt.ToolKit::getLockingKeyState` method. A natural place to put this in
> JavaFX is in the `javafx.application.Platform` class, so we propose to create
> a new `Platform::isKeyLocked` method, which will take a `KeyCode` -- either
> `CAPS` or `NUM_LOCK` -- and return an `Optional<Boolean>` indicating whether
> or not that key is in the locked or "on" state. If we can't read the key
> state on a particular platform, we will return `Optional.empty()`, rather
> than throwing a runtime exception as AWT does.
>
> I have provided both an automated Robot test and a manual test. The latter is
> needed primarily because we can't set the CAPS lock on Mac using Robot, but
> also because we want way to test the case where the user has enabled CAPS
> lock before the program starts.
modules/javafx.graphics/src/main/java/com/sun/glass/ui/Application.java line
764:
> 762: default:
> 763: return Optional.empty();
> 764: }
This could be a switch expression:
return switch (lockState) {
case KeyEvent.KEY_LOCK_OFF -> Optional.of(false);
case KeyEvent.KEY_LOCK_ON -> Optional.of(true);
default -> Optional.empty();
}
Also, do we use a space after `switch`? I see many instances both with and
without in the current source.
modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java
line 1250:
> 1248: default:
> 1249: return com.sun.glass.events.KeyEvent.VK_UNDEFINED;
> 1250: }
Also expression switch here.
-------------
PR: https://git.openjdk.java.net/jfx/pull/385
