JDK14/Java14源码在线阅读

/*
 *
 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - 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.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
 * 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.
 */

import javax.swing.*;
import javax.swing.border.*;

import java.awt.*;
import java.awt.event.*;
import java.util.*;


/**
 * @author Jeff Dinkins
 * @author Chester Rose
 * @author Brian Beck
 */

public class DirectionPanel extends JPanel {

    private ButtonGroup group;

    public DirectionPanel(boolean enable, String selection, ActionListener l) {
        setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
        setAlignmentY(TOP_ALIGNMENT);
        setAlignmentX(LEFT_ALIGNMENT);

        Box firstThree = Box.createHorizontalBox();
        Box secondThree = Box.createHorizontalBox();
        Box thirdThree = Box.createHorizontalBox();

        if(!enable) {
            selection = "None";
        }

        group = new ButtonGroup();
        DirectionButton b;
        b = (DirectionButton) firstThree.add(new DirectionButton(  tl_dot, tldn_dot, "NW", "Sets the orientation to the North-West", l, group, selection.equals("NW")));
        b.setEnabled(enable);
        b = (DirectionButton) firstThree.add(new DirectionButton(  tm_dot, tmdn_dot, "N",  "Sets the orientation to the North", l, group, selection.equals("N")));
        b.setEnabled(enable);
        b = (DirectionButton) firstThree.add(new DirectionButton(  tr_dot, trdn_dot, "NE", "Sets the orientation to the North-East", l, group, selection.equals("NE")));
        b.setEnabled(enable);
        b = (DirectionButton) secondThree.add(new DirectionButton( ml_dot, mldn_dot, "W", "Sets the orientation to the West", l, group, selection.equals("W")));
        b.setEnabled(enable);
        b = (DirectionButton) secondThree.add(new DirectionButton( c_dot,  cdn_dot,  "C", "Sets the orientation to the Center", l, group, selection.equals("C")));
        b.setEnabled(enable);
        b = (DirectionButton) secondThree.add(new DirectionButton( mr_dot, mrdn_dot, "E", "Sets the orientation to the East", l, group, selection.equals("E")));
        b.setEnabled(enable);
        b = (DirectionButton) thirdThree.add(new DirectionButton(  bl_dot, bldn_dot, "SW", "Sets the orientation to the South-West", l, group, selection.equals("SW")));
        b.setEnabled(enable);
        b = (DirectionButton) thirdThree.add(new DirectionButton(  bm_dot, bmdn_dot, "S", "Sets the orientation to the South", l, group, selection.equals("S")));
        b.setEnabled(enable);
        b = (DirectionButton) thirdThree.add(new DirectionButton(  br_dot, brdn_dot, "SE", "Sets the orientation to the South-East", l, group, selection.equals("SE")));
        b.setEnabled(enable);

        add(firstThree);
        add(secondThree);
        add(thirdThree);
    }

    public String getSelection() {
        return group.getSelection().getActionCommand();
    }

    public void setSelection( String selection  ) {
        Enumeration e = group.getElements();
        while( e.hasMoreElements() ) {
            JRadioButton b = (JRadioButton)e.nextElement();
            if( b.getActionCommand().equals(selection) ) {
               b.setSelected(true);
            }
        }
    }

    // Chester's way cool layout buttons
    public ImageIcon bl_dot   = loadImageIcon("bl.gif","bottom left layout button");
    public ImageIcon bldn_dot = loadImageIcon("bldn.gif","selected bottom left layout button");
    public ImageIcon bm_dot   = loadImageIcon("bm.gif","bottom middle layout button");
    public ImageIcon bmdn_dot = loadImageIcon("bmdn.gif","selected bottom middle layout button");
    public ImageIcon br_dot   = loadImageIcon("br.gif","bottom right layout button");
    public ImageIcon brdn_dot = loadImageIcon("brdn.gif","selected bottom right layout button");
    public ImageIcon c_dot    = loadImageIcon("c.gif","center layout button");
    public ImageIcon cdn_dot  = loadImageIcon("cdn.gif","selected center layout button");
    public ImageIcon ml_dot   = loadImageIcon("ml.gif","middle left layout button");
    public ImageIcon mldn_dot = loadImageIcon("mldn.gif","selected middle left layout button");
    public ImageIcon mr_dot   = loadImageIcon("mr.gif","middle right layout button");
    public ImageIcon mrdn_dot = loadImageIcon("mrdn.gif","selected middle right layout button");
    public ImageIcon tl_dot   = loadImageIcon("tl.gif","top left layout button");
    public ImageIcon tldn_dot = loadImageIcon("tldn.gif","selected top left layout button");
    public ImageIcon tm_dot   = loadImageIcon("tm.gif","top middle layout button");
    public ImageIcon tmdn_dot = loadImageIcon("tmdn.gif","selected top middle layout button");
    public ImageIcon tr_dot   = loadImageIcon("tr.gif","top right layout button");
    public ImageIcon trdn_dot = loadImageIcon("trdn.gif","selected top right layout button");

    public ImageIcon loadImageIcon(String filename, String description) {
        String path = "/resources/images/buttons/" + filename;
        return new ImageIcon(getClass().getResource(path), description);
    }


    public class DirectionButton extends JRadioButton {

        /**
         * A layout direction button
         */
        public DirectionButton(Icon icon, Icon downIcon, String direction,

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