/*

 * Copyright (c) 1997, 2004, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package com.sun.java.swing.plaf.motif;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.plaf.*;

import javax.swing.border.*;

import javax.swing.plaf.basic.*;

import javax.swing.plaf.basic.BasicMenuUI;

/**

 * A Motif L&F implementation of MenuUI.

 * <p>

 *

 * @author Georges Saab

 * @author Rich Schiavi

 */

public class MotifMenuUI extends BasicMenuUI

{

    public static ComponentUI createUI( JComponent x ) {

        return new MotifMenuUI();

    }

// These should not be necessary because BasicMenuUI does this,

// and this class overrides createChangeListener.

//    protected void installListeners() {

//      super.installListeners();

//        changeListener = createChangeListener(menuItem);

//        menuItem.addChangeListener(changeListener);

//    }

//

//    protected void uninstallListeners() {

//      super.uninstallListeners();

//      menuItem.removeChangeListener(changeListener);

//    }

    protected ChangeListener createChangeListener(JComponent c) {

        return new MotifChangeHandler((JMenu)c, this);

    }

    private boolean popupIsOpen(JMenu m,MenuElement me[]) {

        int i;

        JPopupMenu pm = m.getPopupMenu();

        for(i=me.length-1;i>=0;i--) {

            if(me[i].getComponent() == pm)

                return true;

        }

        return false;

    }

    protected MouseInputListener createMouseInputListener(JComponent c) {

        return new MouseInputHandler();

    }

    public class MotifChangeHandler extends ChangeHandler {

        public MotifChangeHandler(JMenu m, MotifMenuUI ui) {

            super(m, ui);

        }

        public void stateChanged(ChangeEvent e) {

            JMenuItem c = (JMenuItem)e.getSource();

            if (c.isArmed() || c.isSelected()) {

                c.setBorderPainted(true);

                // c.repaint();

            } else {

                c.setBorderPainted(false);

            }

            super.stateChanged(e);

        }

    }

    protected class MouseInputHandler implements MouseInputListener {

        public void mouseClicked(MouseEvent e) {}

        public void mousePressed(MouseEvent e) {

            MenuSelectionManager manager = MenuSelectionManager.defaultManager();

            JMenu menu = (JMenu)e.getComponent();

            if(menu.isEnabled()) {

                if(menu.isTopLevelMenu()) {

                    if(menu.isSelected()) {

                        manager.clearSelectedPath();

                    } else {

                        Container cnt = menu.getParent();

                        if(cnt != null && cnt instanceof JMenuBar) {

                            MenuElement me[] = new MenuElement[2];

                            me[0]=(MenuElement)cnt;

                            me[1]=menu;

                            manager.setSelectedPath(me);

                        }

                    }

                }

                MenuElement path[] = getPath();

                if (path.length > 0) {

                    MenuElement newPath[] = new MenuElement[path.length+1];

                    System.arraycopy(path,0,newPath,0,path.length);

                    newPath[path.length] = menu.getPopupMenu();

                    manager.setSelectedPath(newPath);

                }

            }

        }

        public void mouseReleased(MouseEvent e) {

            MenuSelectionManager manager =

                MenuSelectionManager.defaultManager();

            JMenuItem menuItem = (JMenuItem)e.getComponent();

            Point p = e.getPoint();

            if(!(p.x >= 0 && p.x < menuItem.getWidth() &&

                 p.y >= 0 && p.y < menuItem.getHeight())) {

                manager.processMouseEvent(e);

            }

        }

        public void mouseEntered(MouseEvent e) {}

        public void mouseExited(MouseEvent e) {}

        public void mouseDragged(MouseEvent e) {

            MenuSelectionManager.defaultManager().processMouseEvent(e);

        }

        public void mouseMoved(MouseEvent e) { }

    }

}