octopushelptoolbar.java

数据仓库工具

/*
LoaderGenerator - tool for generated xml, sql and doml file needed for Octopus.


    Copyright (C) 2003  Together

    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
*/

package org.webdocwf.util.loader.wizard;

// Java core packages
import java.awt.*;
import java.awt.event.*;
import java.net.*;

// Java extension packages
import javax.swing.*;
import javax.swing.event.*;

public class OctopusHelpToolBar extends JToolBar
   implements HyperlinkListener {

   private OctopusHelpPane webBrowserPane;
   private JButton backButton;
   private JButton forwardButton;
   private JTextField urlTextField;

   // WebToolBar constructor
   public OctopusHelpToolBar( OctopusHelpPane browser )
   {
      super( "Web Navigation" );

      // register for HyperlinkEvents
      webBrowserPane = browser;
      webBrowserPane.addHyperlinkListener( this );

      // create JTextField for entering URLs
      urlTextField = new JTextField( 25 );
      urlTextField.setVisible(false);
      urlTextField.addActionListener(
         new ActionListener() {

            // navigate webBrowser to user-entered URL
            public void actionPerformed( ActionEvent event )
            {
               // attempt to load URL in webBrowserPane
               try {
                  URL url = new URL( urlTextField.getText() );
                  webBrowserPane.goToURL( url );
               }

               // handle invalid URL
               catch ( MalformedURLException urlException ) {
                  urlException.printStackTrace();
               }
            }
         }
      );

      // create JButton for navigating to previous history URL
      backButton = new JButton( new ImageIcon(
         getClass().getResource( "images/Back16.gif" ) ) );

      backButton.addActionListener(
         new ActionListener() {

            public void actionPerformed( ActionEvent event )
            {
               // navigate to previous URL
               URL url = webBrowserPane.back();

               // display URL in urlTextField
               urlTextField.setText( url.toString() );
            }
         }
      );

      // create JButton for navigating to next history URL
      forwardButton = new JButton( new ImageIcon(
         getClass().getResource( "images/Forward16.gif" ) ) );

      forwardButton.addActionListener(
         new ActionListener() {

            public void actionPerformed( ActionEvent event )
            {
               // navigate to next URL
               URL url = webBrowserPane.forward();

               // display new URL in urlTextField
               urlTextField.setText( url.toString() );
            }
         }
      );

      // add JButtons and JTextField to WebToolBar
      add( backButton );
      add( forwardButton );
      add( urlTextField );

   } // end WebToolBar constructor

   // listen for HyperlinkEvents in WebBrowserPane
   public void hyperlinkUpdate( HyperlinkEvent event )
   {
      // if hyperlink was activated, go to hyperlink's URL
      if ( event.getEventType() ==
         HyperlinkEvent.EventType.ACTIVATED ) {

         // get URL from HyperlinkEvent
         URL url = event.getURL();

         // navigate to URL and display URL in urlTextField
         webBrowserPane.goToURL( url );
         urlTextField.setText( url.toString() );
      }
   }
}