aboutdialog.java

SAP这个系统的一个转换器

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   AboutDialog.java

package com.sap.mw.jco.util;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.URL;
import java.util.Enumeration;
import java.util.Vector;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class AboutDialog
{
    private static class Picture extends Component
    {

        private Image createImage(Component comp, long ldata[])
        {
            if(ldata == null)
                return null;
            byte data[] = new byte[ldata.length * 8];
            for(int i = 0; i < data.length; i++)
                data[i] = (byte)(int)(ldata[i / 8] >> (7 - i % 8) * 8 & 255L);

            MediaTracker tracker = new MediaTracker(comp);
            Image image = Toolkit.getDefaultToolkit().createImage(data);
            tracker.addImage(image, 0);
            try
            {
                tracker.waitForAll();
            }
            catch(InterruptedException e)
            {
                return null;
            }
            tracker.removeImage(image, 0);
            return image;
        }

        public Dimension getMinimumSize()
        {
            return new Dimension(m_image.getWidth(null), m_image.getHeight(null));
        }

        public Dimension getPreferredSize()
        {
            return getMinimumSize();
        }

        public void paint(Graphics g)
        {
            g.setColor(getBackground());
            g.fillRect(0, 0, getSize().width, getSize().height);
            int x = 0;
            int y = 0;
            if(m_alignment == 1)
                x = (getSize().width - m_image.getWidth(null)) / 2;
            else
            if(m_alignment == 2)
                x = getSize().width - m_image.getWidth(null);
            g.drawImage(m_image, x, y, this);
        }

        public static final byte LEFT = 0;
        public static final byte CENTER = 1;
        public static final byte RIGHT = 2;
        Image m_image;
        byte m_alignment;

        public Picture(long data[], byte alignment)
        {
            m_image = createImage(this, data);
            m_alignment = alignment;
            setSize(m_image.getWidth(null), m_image.getHeight(null));
        }
    }

    public static class Section
    {

        public void addEntry(String name, String value)
        {
            m_entries.addElement(new NamedValuePair(name, value));
        }

        public String getTitle()
        {
            return m_title == null ? "" : m_title;
        }

        public int getNumEntries()
        {
            return m_entries.size();
        }

        public String getEntryName(int index)
        {
            return ((NamedValuePair)m_entries.elementAt(index)).getName();
        }

        public String getEntryValue(int index)
        {
            return ((NamedValuePair)m_entries.elementAt(index)).getValue();
        }

        String m_title;
        Vector m_entries;

        public Section(String title)
        {
            m_entries = new Vector();
            m_title = title;
        }
    }

    protected static class NamedValuePair
    {

        public String getName()
        {
            return m_name;
        }

        public String getValue()
        {
            return m_value;
        }

        String m_name;
        String m_value;

        public NamedValuePair(String name, String value)
        {
            m_name = name == null ? "" : name;
            m_value = value == null ? "" : value;
        }
    }


    public AboutDialog(String product_name)
    {
        m_sections = new Vector();
        m_product_name = "SAP Java Connector";
        m_copyright = "Copyright (c) 2000-2005 SAP AG. All rights reserved.";
        m_manifest = null;
        m_product_name = product_name;
        m_manifest = getManifest();
        addSection(getJavaVersion());
    }

    public void addSection(Section section)
    {
        m_sections.addElement(section);
    }

    protected static String getFilePathToClass(Class cls)
    {
        String filepath = null;
        try
        {
            String rsc = cls.getName().replace('.', '/') + ".class";
            URL url = cls.getClassLoader().getResource(rsc);
            String ptc = url == null ? null : url.getProtocol();
            if("jar".equals(ptc) || "file".equals(ptc))
            {
                filepath = url.getFile();
                filepath = filepath.substring(0, filepath.length() - rsc.length() - ("jar".equals(ptc) ? 2 : 1));
                if(filepath.startsWith("jar:"))
                    filepath = filepath.substring(4);
                if(filepath.startsWith("file:"))
                    filepath = filepath.substring(5);
                filepath = (new File(filepath)).getCanonicalPath();
            }
        }
        catch(Throwable ex) { }
        return filepath;
    }

    protected Section getManifest()
    {
        Section section = new Section("Manifest");
        try
        {
            String path = getOwnFilePath();
            if(path == null)
                return section;
            ZipInputStream is = new ZipInputStream(new FileInputStream(path));
            ZipEntry entry;
            for(entry = null; (entry = is.getNextEntry()) != null;)
            {
                if(entry.getName().equalsIgnoreCase("META-INF/MANIFEST.MF"))
                    break;
                is.closeEntry();