aboutdialog.java

一个查找java程序里bug的程序的源代码,该程序本身也是java写的,对提高java编程水平很有用

/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2003,2004 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * AboutDialog.java
 *
 * Created on April 6, 2003, 7:05 PM
 */

package edu.umd.cs.findbugs.gui;

import edu.umd.cs.findbugs.Version;

import edu.umd.cs.findbugs.annotations.SuppressWarnings;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.text.MessageFormat;
import java.util.regex.*;
import java.net.URL;
import javax.swing.event.HyperlinkEvent;

/**
 * The Help:About dialog.
 *
 * @author David Hovemeyer
 */
public class AboutDialog extends javax.swing.JDialog {

	private FindBugsFrame parent;

	/**
	 * Creates new form AboutDialog
	 */
	public AboutDialog(FindBugsFrame parent, boolean modal) {
		super(parent, modal);
		this.parent = parent;

		initComponents();

		try {
			processPage(aboutEditorPane, "edu/umd/cs/findbugs/gui/help/About.html");
			licenseEditorPane.setPage(getClass().getClassLoader().getResource("edu/umd/cs/findbugs/gui/help/License.html"));
			acknowldgementsEditorPane.setPage(getClass().getClassLoader().getResource("edu/umd/cs/findbugs/gui/help/Acknowledgements.html"));
		} catch (IOException e) {
			parent.getLogger().logMessage(ConsoleLogger.ERROR, e.toString());
		}

		setTitle(MessageFormat.format(L10N.getLocalString("dlg.aboutfindbugs_ttl", "About FindBugs {0}"), new Object[]{Version.RELEASE}));
	}

	/**
	 * Process an HTML page to replace certain substitution patterns.
	 * Right now, we just expand @VERSION@.
	 */
	@SuppressWarnings("OS")
	private void processPage(javax.swing.JEditorPane pane, String fileName) throws IOException {
		InputStream in = null;

		try {
			StringBuffer buf = new StringBuffer();

			// Open the file as a stream
			in = getClass().getClassLoader().getResourceAsStream(fileName);
			if (in == null)
				throw new IOException(MessageFormat.format(L10N.getLocalString("msg.couldntload_txt", "Couldn't load {0}"), new Object[]{fileName}));
			BufferedReader reader = new BufferedReader(new InputStreamReader(in));

			// Replace instances of @VERSION@ with actual version number
			Pattern pattern = Pattern.compile("@VERSION@");
			String line;
			while ((line = reader.readLine()) != null) {
				line = pattern.matcher(line).replaceAll(Version.RELEASE);
				buf.append(line);
				buf.append('\n');
			}

			// Load the page into the editor pane
			String text = buf.toString();
			pane.setContentType("text/html");
			pane.setText(text);
		} finally {
			try {
				if (in != null)
					in.close();
			} catch (IOException e) {
			}
		}
	}

	/**
	 * This method is called from within the constructor to
	 * initialize the form.
	 * WARNING: Do NOT modify this code. The content of this method is
	 * always regenerated by the Form Editor.
	 */
    private void initComponents() {//GEN-BEGIN:initComponents
        java.awt.GridBagConstraints gridBagConstraints;

        aboutTabPane = new javax.swing.JTabbedPane();
        aboutScrollPane = new javax.swing.JScrollPane();
        aboutEditorPane = new javax.swing.JEditorPane();
        licenseScrollPane = new javax.swing.JScrollPane();
        licenseEditorPane = new javax.swing.JEditorPane();
        acknowledgmentsScrollPane = new javax.swing.JScrollPane();
        acknowldgementsEditorPane = new javax.swing.JEditorPane();
        jSeparator1 = new javax.swing.JSeparator();
        okButton = new javax.swing.JButton();

        getContentPane().setLayout(new java.awt.GridBagLayout());

        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                closeDialog(evt);
            }
        });

        aboutEditorPane.setEditable(false);
        aboutEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
            public void hyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
                editorPaneHyperlinkUpdate(evt);
            }
        });

        aboutScrollPane.setViewportView(aboutEditorPane);

        aboutTabPane.addTab("About", aboutScrollPane);

        licenseEditorPane.setEditable(false);
        licenseEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
            public void hyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
                editorPaneHyperlinkUpdate(evt);
            }
        });

        licenseScrollPane.setViewportView(licenseEditorPane);

        aboutTabPane.addTab("License", licenseScrollPane);

        acknowldgementsEditorPane.setEditable(false);
        acknowldgementsEditorPane.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
            public void hyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
                editorPaneHyperlinkUpdate(evt);
            }
        });

        acknowledgmentsScrollPane.setViewportView(acknowldgementsEditorPane);

        aboutTabPane.addTab("Acknowledgments", acknowledgmentsScrollPane);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.fill = java.awt.GridBagConstraints.BOTH;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        getContentPane().add(aboutTabPane, gridBagConstraints);

        {
            aboutTabPane.setTitleAt(0, L10N.getLocalString("dlg.about_tab", "About"));
            aboutTabPane.setTitleAt(1, L10N.getLocalString("dlg.license_tab", "License"));
            aboutTabPane.setTitleAt(2, L10N.getLocalString("dlg.acknowledgements_tab", "Acknowledgements"));
        }
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;
        getContentPane().add(jSeparator1, gridBagConstraints);

        okButton.setMnemonic('O');
        okButton.setText("OK");
        okButton.setText(L10N.getLocalString("dlg.ok_btn", "OK"));
        okButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                okButtonActionPerformed(evt);
            }
        });

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 2;
        gridBagConstraints.insets = new java.awt.Insets(3, 0, 3, 0);
        getContentPane().add(okButton, gridBagConstraints);

        pack();
    }//GEN-END:initComponents

    private void editorPaneHyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {//GEN-FIRST:event_editorPaneHyperlinkUpdate
        try {
            if (evt.getEventType().equals( HyperlinkEvent.EventType.ACTIVATED)) {
                URL url = evt.getURL();
                showInBrowser(url.toString());
            }
        }
        catch (Exception e) {
        }
    }//GEN-LAST:event_editorPaneHyperlinkUpdate
    
    /**
     * Attempts to show the given URL in the OS's web browser.
     * @param url url to show
     * @return true if the show operation was successful, false otherwise.
     */
    private static boolean showInBrowser(String url){
    	String os = System.getProperty("os.name").toLowerCase();
        Runtime rt = Runtime.getRuntime();
        try{
	        if (os.indexOf( "win" ) >= 0) {
	        	// this doesn't support showing urls in the form of "page.html#nameLink" 
	            rt.exec( "rundll32 url.dll,FileProtocolHandler " + url);
	        } else if (os.indexOf( "mac" ) >= 0) {
	            rt.exec( "open " + url);
	        } else if (os.indexOf( "nix") >=0 || os.indexOf( "nux") >=0) {
	        	// Do a best guess on unix until we get a platform independent way
	        	// Build a list of browsers to try, in this order.
	        	String[] browsers = {"epiphany", "firefox", "mozilla", "konqueror",
	        			"netscape","opera","links","lynx"};
	        	
	        	// Build a command string which looks like "browser1 "url" || browser2 "url" ||..."
	        	StringBuffer cmd = new StringBuffer();
	        	for (int i=0; i<browsers.length; i++)
	        		cmd.append( (i==0  ? "" : " || " ) + browsers[i] +" \"" + url + "\" ");
	        	
	        	rt.exec(new String[] { "sh", "-c", cmd.toString() });
	        } else {
	        	return false;
	        }
        }catch (IOException e){
        	return false;
        }
        return true;
    }

	private void okButtonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_okButtonActionPerformed
		closeDialog();
	}//GEN-LAST:event_okButtonActionPerformed

	/**
	 * Closes the dialog
	 */
	private void closeDialog(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_closeDialog
		closeDialog();
	}//GEN-LAST:event_closeDialog

	private void closeDialog() {
		setVisible(false);
		dispose();
	}

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JEditorPane aboutEditorPane;
    private javax.swing.JScrollPane aboutScrollPane;
    private javax.swing.JTabbedPane aboutTabPane;
    private javax.swing.JEditorPane acknowldgementsEditorPane;
    private javax.swing.JScrollPane acknowledgmentsScrollPane;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JEditorPane licenseEditorPane;
    private javax.swing.JScrollPane licenseScrollPane;
    private javax.swing.JButton okButton;
    // End of variables declaration//GEN-END:variables

}

// vim:ts=4