4632N/A/*
4632N/A * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
4632N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4632N/A *
4632N/A * This code is free software; you can redistribute it and/or modify it
4632N/A * under the terms of the GNU General Public License version 2 only, as
4632N/A * published by the Free Software Foundation. Oracle designates this
4632N/A * particular file as subject to the "Classpath" exception as provided
4632N/A * by Oracle in the LICENSE file that accompanied this code.
4632N/A *
4632N/A * This code is distributed in the hope that it will be useful, but WITHOUT
4632N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
4632N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
4632N/A * version 2 for more details (a copy is included in the LICENSE file that
4632N/A * accompanied this code).
4632N/A *
4632N/A * You should have received a copy of the GNU General Public License version
4632N/A * 2 along with this work; if not, write to the Free Software Foundation,
4632N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
4632N/A *
4632N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
4632N/A * or visit www.oracle.com if you need additional information or have any
4632N/A * questions.
4632N/A */
4632N/A
4632N/Apackage com.apple.laf;
4632N/A
4632N/Aimport java.awt.*;
4632N/Aimport java.awt.event.KeyEvent;
4632N/A
4632N/Aimport javax.swing.*;
4632N/A
4632N/Aimport com.apple.laf.AquaUtils.RecyclableSingleton;
4632N/Aimport com.apple.laf.AquaUtils.RecyclableSingletonFromDefaultConstructor;
4632N/A
4632N/Apublic class AquaMnemonicHandler {
4632N/A static final RecyclableSingleton<AltProcessor> altProcessor = new RecyclableSingletonFromDefaultConstructor<AltProcessor>(AltProcessor.class);
4632N/A public static KeyEventPostProcessor getInstance() {
4632N/A return altProcessor.get();
4632N/A }
4632N/A
4632N/A protected static boolean isMnemonicHidden = true; // true by default
4632N/A
4632N/A public static void setMnemonicHidden(final boolean hide) {
4632N/A if (UIManager.getBoolean("Button.showMnemonics")) {
4632N/A // Do not hide mnemonics if the UI defaults do not support this
4632N/A isMnemonicHidden = false;
4632N/A } else {
4632N/A isMnemonicHidden = hide;
4632N/A }
4632N/A }
4632N/A
4632N/A /**
4632N/A * Gets the state of the hide mnemonic flag. This only has meaning if this feature is supported by the underlying OS.
4632N/A *
4632N/A * @return true if mnemonics are hidden, otherwise, false
4632N/A * @see #setMnemonicHidden
4632N/A * @since 1.4
4632N/A */
4632N/A public static boolean isMnemonicHidden() {
4632N/A if (UIManager.getBoolean("Button.showMnemonics")) {
4632N/A // Do not hide mnemonics if the UI defaults do not support this
4632N/A isMnemonicHidden = false;
4632N/A }
4632N/A return isMnemonicHidden;
4632N/A }
4632N/A
4632N/A static class AltProcessor implements KeyEventPostProcessor {
4632N/A public boolean postProcessKeyEvent(final KeyEvent ev) {
4632N/A if (ev.getKeyCode() != KeyEvent.VK_ALT) {
4632N/A return false;
4632N/A }
4632N/A
4632N/A final JRootPane root = SwingUtilities.getRootPane(ev.getComponent());
4632N/A final Window winAncestor = (root == null ? null : SwingUtilities.getWindowAncestor(root));
4632N/A
4632N/A switch(ev.getID()) {
4632N/A case KeyEvent.KEY_PRESSED:
4632N/A setMnemonicHidden(false);
4632N/A break;
4632N/A case KeyEvent.KEY_RELEASED:
4632N/A setMnemonicHidden(true);
4632N/A break;
4632N/A }
4632N/A
4632N/A repaintMnemonicsInWindow(winAncestor);
4632N/A
4632N/A return false;
4632N/A }
4632N/A }
4632N/A
4632N/A /*
4632N/A * Repaints all the components with the mnemonics in the given window and all its owned windows.
4632N/A */
4632N/A static void repaintMnemonicsInWindow(final Window w) {
4632N/A if (w == null || !w.isShowing()) {
4632N/A return;
4632N/A }
4632N/A
4632N/A final Window[] ownedWindows = w.getOwnedWindows();
4632N/A for (final Window element : ownedWindows) {
4632N/A repaintMnemonicsInWindow(element);
4632N/A }
4632N/A
4632N/A repaintMnemonicsInContainer(w);
4632N/A }
4632N/A
4632N/A /*
4632N/A * Repaints all the components with the mnemonics in container.
4632N/A * Recursively searches for all the subcomponents.
4632N/A */
4632N/A static void repaintMnemonicsInContainer(final Container cont) {
4632N/A for (int i = 0; i < cont.getComponentCount(); i++) {
4632N/A final Component c = cont.getComponent(i);
4632N/A if (c == null || !c.isVisible()) {
4632N/A continue;
4632N/A }
4632N/A
4632N/A if (c instanceof AbstractButton && ((AbstractButton)c).getMnemonic() != '\0') {
4632N/A c.repaint();
4632N/A continue;
4632N/A }
4632N/A
4632N/A if (c instanceof JLabel && ((JLabel)c).getDisplayedMnemonic() != '\0') {
4632N/A c.repaint();
4632N/A continue;
4632N/A }
4632N/A
4632N/A if (c instanceof Container) {
4632N/A repaintMnemonicsInContainer((Container)c);
4632N/A }
4632N/A }
4632N/A }
4632N/A}