/* $Id: HelpBox.java 17841 2010-01-12 19:17:52Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

  * which accompanies this distribution, and is available at

  * http://www.eclipse.org/legal/epl-v10.html

  *

  * Contributors:

  *    mvw

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 2008 The Regents of the University of California. All

 // Rights Reserved. Permission to use, copy, modify, and distribute this

 // software and its documentation without fee, and without a written

 // agreement is hereby granted, provided that the above copyright notice

 // and this paragraph appear in all copies.  This software program and

 // documentation are copyrighted by The Regents of the University of

 // California. The software program and documentation are supplied "AS

 // IS", without any accompanying services from The Regents. The Regents

 // does not warrant that the operation of the program will be

 // uninterrupted or error-free. The end-user understands that the program

 // was developed for research purposes and is advised not to rely

 // exclusively on the program for any reason.  IN NO EVENT SHALL THE

 // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,

 // SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,

 // ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF

 // THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF

 // SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY

 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE

 // PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF

 // CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,

 // UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 package org.argouml.ui;

 import java.awt.BorderLayout;

 import java.awt.Dimension;

 import java.awt.Toolkit;

 import java.io.IOException;

 import java.net.MalformedURLException;

 import java.net.URL;

 import javax.swing.JEditorPane;

 import javax.swing.JFrame;

 import javax.swing.JScrollPane;

 import javax.swing.JTabbedPane;

 import javax.swing.event.HyperlinkEvent;

 import javax.swing.event.HyperlinkListener;

 import org.apache.log4j.Logger;

 import org.argouml.application.helpers.ApplicationVersion;

 /**

  * This is what you see after you activate the "Help->Help" menu-item.

  */

 public class HelpBox extends JFrame implements HyperlinkListener {

     private static final Logger LOG = Logger.getLogger(HelpBox.class);

     /**

      * A tabbed pane to display several pages simultaneously.

      */

     private JTabbedPane tabs = new JTabbedPane();

     /**

      * The panes to display the various help pages.

      */

     private JEditorPane[] panes = null;

     /**

      * The names and URLs for the pages.

      */

     private String pages[][] = {{"Manual",

             ApplicationVersion.getOnlineManual() ,

             "The ArgoUML online manual"},

         {"Support",

             ApplicationVersion.getOnlineSupport(),

             "The ArgoUML support page" }};

     /**

     * Class constructor.

     *

     * @param title      the title of the help window.

     */

     public HelpBox( String title) {

         super( title);

         Dimension scrSize = Toolkit.getDefaultToolkit().getScreenSize();

         setLocation(scrSize.width / 2 - 400, scrSize.height / 2 - 300);

         getContentPane().setLayout(new BorderLayout(0, 0));

         setSize( 800, 600);

         panes = new JEditorPane [ pages.length];

         for ( int i = 0; i < pages.length; i++) {

             panes[i] = new JEditorPane();

             panes[i].setEditable( false);

             panes[i].setSize( 780, 580);

             panes[i].addHyperlinkListener( this);

             URL paneURL = null;

             try {

                 paneURL = new URL( pages[i][1]);

             } catch ( MalformedURLException e) {

                 LOG.warn( pages[i][0] + " URL malformed: " + pages[i][1]);

             }

             if ( paneURL != null) {

                 try {

                     panes[i].setPage( paneURL);

                 } catch ( IOException e) {

                     LOG.warn("Attempted to read a bad URL: " + paneURL);

                 }

             } else {

                 LOG.warn("Couldn't find " + pages[i][0]);

             }

             // Put the current pane in a scroll pane.

             JScrollPane paneScrollPane = new JScrollPane( panes[i]);

             paneScrollPane.setVerticalScrollBarPolicy(

                     JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);

             paneScrollPane.setPreferredSize(new Dimension(800, 600));

             paneScrollPane.setMinimumSize(new Dimension(400, 300));

             tabs.addTab( pages[i][0], null, paneScrollPane, pages[i][2]);

         }

         getContentPane().add( tabs, BorderLayout.CENTER);

     }

     public void hyperlinkUpdate(HyperlinkEvent event) {

         if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {

             JEditorPane pane = (JEditorPane) event.getSource();

             try {

                 pane.setPage(event.getURL());

             } catch (IOException ioe) {

                 LOG.warn( "Could not fetch requested URL");

             }

         }

     }

     /**

      * The UID.

      */

     private static final long serialVersionUID = 0L;

 }