Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * $Id: SwingXUtilities.java,v 1.11 2009/04/02 20:35:54 kschaefe Exp $
 *
 * Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
 * Santa Clara, California 95054, U.S.A. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

import java.awt.event.InputEvent;

import java.lang.reflect.Method;

import javax.swing.InputMap;
import javax.swing.JComponent;

import javax.swing.KeyStroke;

import javax.swing.SwingUtilities;
import javax.swing.plaf.ComponentInputMapUIResource;

public class Main {
    /**
     * A helper for creating and updating key bindings for components with
     * mnemonics. The {@code pressed} action will be invoked when the mnemonic
     * is activated.
     * <p>
     * TODO establish an interface for the mnemonic properties, such as {@code
     * MnemonicEnabled} and change signature to {@code public static <T extends
     * JComponent & MnemonicEnabled> void updateMnemonicBinding(T c, String
     * pressed)}
     * 
     * @param c
     *            the component bindings to update
     * @param pressed
     *            the name of the action in the action map to invoke when the
     *            mnemonic is pressed
     * @throws NullPointerException
     *             if the component is {@code null}
     */
    public static void updateMnemonicBinding(JComponent c, String pressed) {
        updateMnemonicBinding(c, pressed, null);
    }

    /**
     * A helper for creating and updating key bindings for components with
     * mnemonics. The {@code pressed} action will be invoked when the mnemonic
     * is activated and the {@code released} action will be invoked when the
     * mnemonic is deactivated.
     * <p>
     * TODO establish an interface for the mnemonic properties, such as {@code
     * MnemonicEnabled} and change signature to {@code public static <T extends
     * JComponent & MnemonicEnabled> void updateMnemonicBinding(T c, String
     * pressed, String released)}
     * 
     * @param c
     *            the component bindings to update
     * @param pressed
     *            the name of the action in the action map to invoke when the
     *            mnemonic is pressed
     * @param released
     *            the name of the action in the action map to invoke when the
     *            mnemonic is released (if the action is a toggle style, then
     *            this parameter should be {@code null})
     * @throws NullPointerException
     *             if the component is {@code null}
     */
    public static void updateMnemonicBinding(JComponent c, String pressed, String released) {
        Class<?> clazz = c.getClass();
        int m = -1;

        try {
            Method mtd = clazz.getMethod("getMnemonic");
            m = (Integer) mtd.invoke(c);
        } catch (RuntimeException e) {
            throw e;
        } catch (Exception e) {
            throw new IllegalArgumentException("unable to access mnemonic", e);
        }

        InputMap map = SwingUtilities.getUIInputMap(c, JComponent.WHEN_IN_FOCUSED_WINDOW);

        if (m != 0) {
            if (map == null) {
                map = new ComponentInputMapUIResource(c);
                SwingUtilities.replaceUIInputMap(c, JComponent.WHEN_IN_FOCUSED_WINDOW, map);
            }

            map.clear();

            //TODO is ALT_MASK right for all platforms?
            map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, false), pressed);
            map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, true), released);
            map.put(KeyStroke.getKeyStroke(m, 0, true), released);
        } else {
            if (map != null) {
                map.clear();
            }
        }
    }
}