JDK14/Java14源码在线阅读

/*
 * Copyright (c) 1998, 2011, 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.
 */

/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */



import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;


/**
 * This is a subclass of JInternalFrame which displays documents.
 *
 * @author Steve Wilson
 */
@SuppressWarnings("serial")
public class MetalworksDocumentFrame extends JInternalFrame {

    static int openFrameCount = 0;
    static final int offset = 30;

    public MetalworksDocumentFrame() {
        super("", true, true, true, true);
        openFrameCount++;
        setTitle("Untitled Message " + openFrameCount);

        JPanel top = new JPanel();
        top.setBorder(new EmptyBorder(10, 10, 10, 10));
        top.setLayout(new BorderLayout());
        top.add(buildAddressPanel(), BorderLayout.NORTH);

        JTextArea content = new JTextArea(15, 30);
        content.setBorder(new EmptyBorder(0, 5, 0, 5));
        content.setLineWrap(true);



        JScrollPane textScroller = new JScrollPane(content,
                JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        top.add(textScroller, BorderLayout.CENTER);


        setContentPane(top);
        pack();
        setLocation(offset * openFrameCount, offset * openFrameCount);

    }

    private JPanel buildAddressPanel() {
        JPanel p = new JPanel();
        p.setLayout(new LabeledPairLayout());


        JLabel toLabel = new JLabel("To: ", JLabel.RIGHT);
        JTextField toField = new JTextField(25);
        p.add(toLabel, "label");
        p.add(toField, "field");


        JLabel subLabel = new JLabel("Subj: ", JLabel.RIGHT);
        JTextField subField = new JTextField(25);
        p.add(subLabel, "label");
        p.add(subField, "field");


        JLabel ccLabel = new JLabel("cc: ", JLabel.RIGHT);
        JTextField ccField = new JTextField(25);
        p.add(ccLabel, "label");
        p.add(ccField, "field");

        return p;

    }


    class LabeledPairLayout implements LayoutManager {

        List<Component> labels = new ArrayList<Component>();
        List<Component> fields = new ArrayList<Component>();
        int yGap = 2;
        int xGap = 2;

        public void addLayoutComponent(String s, Component c) {
            if (s.equals("label")) {
                labels.add(c);
            } else {
                fields.add(c);
            }
        }

        public void layoutContainer(Container c) {
            Insets insets = c.getInsets();

            int labelWidth = 0;
            for (Component comp : labels) {
                labelWidth = Math.max(labelWidth, comp.getPreferredSize().width);
            }

            int yPos = insets.top;

            Iterator<Component> fieldIter = fields.listIterator();
            Iterator<Component> labelIter = labels.listIterator();
            while (labelIter.hasNext() && fieldIter.hasNext()) {
                JComponent label = (JComponent) labelIter.next();
                JComponent field = (JComponent) fieldIter.next();
                int height = Math.max(label.getPreferredSize().height, field.
                        getPreferredSize().height);
                label.setBounds(insets.left, yPos, labelWidth, height);
                field.setBounds(insets.left + labelWidth + xGap,
                        yPos,
                        c.getSize().width - (labelWidth + xGap + insets.left
                        + insets.right),
                        height);
                yPos += (height + yGap);
            }

        }

        public Dimension minimumLayoutSize(Container c) {
            Insets insets = c.getInsets();

            int labelWidth = 0;
            for (Component comp : labels) {
                labelWidth = Math.max(labelWidth, comp.getPreferredSize().width);
            }

            int yPos = insets.top;

            Iterator<Component> labelIter = labels.listIterator();

/**代码未完, 请加载全部代码(NowJava.com).**/