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
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;

import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import java.io.*;
import java.applet.*;
import java.net.*;

/**
 * Scroll Pane Demo
 *
 * @author Jeff Dinkins
 */
public class ScrollPaneDemo extends DemoModule {

    /**
     * main method allows us to run as a standalone demo.
     */
    public static void main(String[] args) {
        ScrollPaneDemo demo = new ScrollPaneDemo(null);
        demo.mainImpl();
    }

    /**
     * ScrollPaneDemo Constructor
     */
    public ScrollPaneDemo(SwingSet2 swingset) {
        super(swingset, "ScrollPaneDemo", "toolbar/JScrollPane.gif");

        ImageIcon crayons = createImageIcon("scrollpane/crayons.jpg",  getString("ScrollPaneDemo.crayons"));
        getDemoPanel().add(new ImageScroller(this, crayons), BorderLayout.CENTER);
    }


    /**
     * ScrollPane class that demonstrates how to set the various column and row headers
     * and corners.
     */
    class ImageScroller extends JScrollPane {
        public ImageScroller(ScrollPaneDemo demo, Icon icon) {
            super();

            // Panel to hold the icon image
            JPanel p = new JPanel(new BorderLayout());
            p.add(new JLabel(icon), BorderLayout.CENTER);
            getViewport().add(p);

            // Create and add a column header to the scrollpane
            JLabel colHeader = new JLabel(
                demo.createImageIcon("scrollpane/colheader.jpg", getString("ScrollPaneDemo.colheader")));
            setColumnHeaderView(colHeader);

            // Create and add a row header to the scrollpane
            JLabel rowHeader = new JLabel(
                demo.createImageIcon("scrollpane/rowheader.jpg", getString("ScrollPaneDemo.rowheader")));
            setRowHeaderView(rowHeader);

            // Create and add the upper left corner
            JLabel cornerUL = new JLabel(
                demo.createImageIcon("scrollpane/upperleft.jpg", getString("ScrollPaneDemo.upperleft")));
            setCorner(UPPER_LEFT_CORNER, cornerUL);

            // Create and add the upper right corner
            JLabel cornerUR = new JLabel(
                demo.createImageIcon("scrollpane/upperright.jpg", getString("ScrollPaneDemo.upperright")));
            setCorner(UPPER_RIGHT_CORNER, cornerUR);


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