closabletabbedpane.java

myjxta是用jxta开发的一个p2p通讯软件 有聊天 文件共享 视频3大功能 界面采用swing

/*
 *  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 *  reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in
 *  the documentation and/or other materials provided with the
 *  distribution.
 *
 *  3. The end-user documentation included with the redistribution,
 *  if any, must include the following acknowledgment:
 *  "This product includes software developed by the
 *  Sun Microsystems, Inc. for Project JXTA."
 *  Alternately, this acknowledgment may appear in the software itself,
 *  if and wherever such third-party acknowledgments normally appear.
 *
 *  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 *  must not be used to endorse or promote products derived from this
 *  software without prior written permission. For written
 *  permission, please contact Project JXTA at http://www.jxta.org.
 *
 *  5. Products derived from this software may not be called "JXTA",
 *  nor may "JXTA" appear in their name, without prior written
 *  permission of Sun.
 *
 *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 *  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 *  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 *  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 *  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *  ====================================================================
 *
 *  This software consists of voluntary contributions made by many
 *  individuals on behalf of Project JXTA.  For more
 *  information on Project JXTA, please see
 *  <http://www.jxta.org/>.
 *
 *  This license is based on the BSD license adopted by the Apache Foundation.
 *
 *  $Id: ClosableTabbedPane.java,v 1.6 2006/05/17 23:23:00 nano Exp $
 */

package net.jxta.myjxta.ui;

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

/**
 *
 * @version $Id: ClosableTabbedPane.java,v 1.6 2006/05/17 23:23:00 nano Exp $
 *
 * @author james todd [gonzo at jxta dot org]
 * @author struman
 */

final class ClosableTabbedPane
    extends JTabbedPane {

    private Color iconColor = Color.gray;
    private List<DismissListener> listeners = null;
        
    final class CloseTabIcon
        implements Icon {
        private int x_pos;
        private int y_pos;
        private final int width;
        private final int height;
        private final Icon fileIcon;
        
        public CloseTabIcon(Icon fileIcon) {
            this.fileIcon = fileIcon;
            
            width = 16;
            height = 16;
        }
        
        public void paintIcon(Component c, Graphics g, int x, int y) {
            this.x_pos = x;
            this.y_pos = y;
            Color col = g.getColor();
            
            g.setColor(iconColor);
            
            int y_p = y + 2;
            
            g.drawLine(x + 1, y_p, x + 12, y_p);
            g.drawLine(x + 1, y_p + 13, x + 12, y_p + 13);
            g.drawLine(x, y_p + 1, x, y_p + 12);
            g.drawLine(x + 13, y_p + 1, x + 13, y_p + 12);
            g.drawLine(x + 3, y_p + 3, x + 10, y_p + 10);
            g.drawLine(x + 3, y_p + 4, x + 9, y_p + 10);
            g.drawLine(x + 4, y_p + 3, x + 10, y_p + 9);
            g.drawLine(x + 10, y_p + 3, x + 3, y_p + 10);
            g.drawLine(x + 10, y_p + 4, x + 4, y_p + 10);
            g.drawLine(x + 9, y_p + 3, x + 3, y_p + 9);
            g.setColor(col);
            
            if (fileIcon != null) {
                fileIcon.paintIcon(c, g, x + width, y_p);
            }
        }
        
        public int getIconWidth() {
            return width + (fileIcon != null ? fileIcon.getIconWidth() : 0);
        }
        
        public int getIconHeight() {
            return height;
        }
        
        public Rectangle getBounds() {
            return new Rectangle(x_pos, y_pos, width, height);
        }
    }
    
    public ClosableTabbedPane(int placement, int layout) {
        super(placement, layout);
        
        addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent me) {
                process(me.getX(), me.getY());
            }
        });
    }
    
    public void addTab(String title, Component component) {
        this.addTab(title, component, null);
    }
    
    public void addTab(String title, Component component, Icon icon) {
        addTab(title, new CloseTabIcon(icon), component);
    }
        
    public void setCloseIconColor(Color color) {
        this.iconColor = color;
    }
    
    public void removeTabAt(int i) {
        ((Dismissable)getComponentAt(i)).dismiss();
        
        super.removeTabAt(i);
        
        for (Iterator ls = this.listeners != null ?
            this.listeners.iterator() : Collections.EMPTY_LIST.iterator();
            ls.hasNext(); ) {
            ((DismissListener)ls.next()).dismissEvent();
        }
    }
    
    public void addListener(DismissListener l) {
        if (l != null) {
            if (this.listeners == null) {
                this.listeners = new ArrayList<DismissListener>();
            }
       
            this.listeners.add(l);
        }
    }
    
    private void process(int x, int y) {
        requestFocus();

        int tab;
        if ((tab = getUI().tabForCoordinate(this, x, y)) >= 0) {
            if (((CloseTabIcon)getIconAt(tab)).getBounds().contains(x, y)) {
                removeTabAt(tab);
            }
        }
    }
}