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on Mac show mnemonics only when Ctrl and Alt keys are pressed (issue #4)

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This commit is contained in:
Karl Tauber
2019-12-17 11:35:16 +01:00
parent 8450e74832
commit bf8cc268cc
2 changed files with 21 additions and 7 deletions
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26
flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java
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@@ -61,7 +61,7 @@ public abstract class FlatLaf
private PropertyChangeListener desktopPropertyListener;
private KeyEventPostProcessor mnemonicListener;
private static boolean altKeyPressed;
private static boolean showMnemonics;
private Consumer<UIDefaults> postInitialization;
@@ -113,8 +113,7 @@ public abstract class FlatLaf
// add mnemonic listener
mnemonicListener = e -> {
if( e.getKeyCode() == KeyEvent.VK_ALT )
altKeyChanged( e.getID() == KeyEvent.KEY_PRESSED );
checkShowMnemonics( e );
return false;
};
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventPostProcessor( mnemonicListener );
@@ -357,14 +356,27 @@ public abstract class FlatLaf
}
public static boolean isShowMnemonics() {
return altKeyPressed || !UIManager.getBoolean( "Component.hideMnemonics" );
return showMnemonics || !UIManager.getBoolean( "Component.hideMnemonics" );
}
private static void altKeyChanged( boolean pressed ) {
if( pressed == altKeyPressed )
private static void checkShowMnemonics( KeyEvent e ) {
int keyCode = e.getKeyCode();
if( SystemInfo.IS_MAC ) {
// Ctrl+Alt keys must be pressed on Mac
if( keyCode == KeyEvent.VK_CONTROL || keyCode == KeyEvent.VK_ALT )
showMnemonics( e.getID() == KeyEvent.KEY_PRESSED && e.isControlDown() && e.isAltDown() );
} else {
// Alt key must be pressed on Windows and Linux
if( keyCode == KeyEvent.VK_ALT )
showMnemonics( e.getID() == KeyEvent.KEY_PRESSED );
}
}
private static void showMnemonics( boolean show ) {
if( show == showMnemonics )
return;
altKeyPressed = pressed;
showMnemonics = show;
// check whether it is necessary to repaint
if( !UIManager.getBoolean( "Component.hideMnemonics" ) )