/**
* Tries to work around AltGr madness if we detect that AltGr was pressed. If you did press Ctrl +
* Alt or Alt and hit this function, then check the state provider. This function should be called
* as a fallback when remaps and default bindings failed to find a match.
*
* <p>Examples for different Operating Systems when AltGr + Q is pressed (@ key on German
* keybord):
*
* <ul>
* <li>Windows SWT sends Ctrl + Alt + @.
* <li>Mac OSX SWT sends Alt + @.
* <li>Linux SWT passes just @.
* </ul>
*
* @return Either a {@link KeyStroke} without modifiers or <tt>null</tt> if not applicable.
*/
public static KeyStroke fixAltGrKey(KeyStroke key) {
// Most-common case, bail as fast as possible
if (!key.withAltKey()) {
return null;
}
// Turn off control and alt key bits.
if (key.getSpecialKey() == null) {
return new SimpleKeyStroke(key.getCharacter(), key.withShiftKey(), false, false);
} else {
return new SimpleKeyStroke(key.getSpecialKey(), key.withShiftKey(), false, false);
}
}
