1 /*

     2  * Copyright 1995-2005 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.applet;

    27 

    28 import java.util.*;

    29 import java.io.*;

    30 import java.net.URL;

    31 import java.net.MalformedURLException;

    32 import java.awt.*;

    33 import java.applet.*;

    34 import sun.tools.jar.*;

    35 

    36 

    37 /**

    38  * Sample applet panel class. The panel manages and manipulates the

    39  * applet as it is being loaded. It forks a seperate thread in a new

    40  * thread group to call the applet's init(), start(), stop(), and

    41  * destroy() methods.

    42  *

    43  * @author      Arthur van Hoff

    44  */

    45 class AppletViewerPanel extends AppletPanel {

    46 

    47     /* Are we debugging? */

    48     static boolean debug = false;

    49 

    50     /**

    51      * The document url.

    52      */

    53     URL documentURL;

    54 

    55     /**

    56      * The base url.

    57      */

    58     URL baseURL;

    59 

    60     /**

    61      * The attributes of the applet.

    62      */

    63     Hashtable atts;

    64 

    65     /*

    66      * JDK 1.1 serialVersionUID

    67      */

    68     private static final long serialVersionUID = 8890989370785545619L;

    69 

    70     /**

    71      * Construct an applet viewer and start the applet.

    72      */

    73     AppletViewerPanel(URL documentURL, Hashtable atts) {

    74         this.documentURL = documentURL;

    75         this.atts = atts;

    76 

    77         String att = getParameter("codebase");

    78         if (att != null) {

    79             if (!att.endsWith("/")) {

    80                 att += "/";

    81             }

    82             try {

    83                 baseURL = new URL(documentURL, att);

    84             } catch (MalformedURLException e) {

    85             }

    86         }

    87         if (baseURL == null) {

    88             String file = documentURL.getFile();

    89             int i = file.lastIndexOf('/');

    90             if (i >= 0 && i < file.length() - 1) {

    91                 try {

    92                     baseURL = new URL(documentURL, file.substring(0, i + 1));

    93                 } catch (MalformedURLException e) {

    94                 }

    95             }

    96         }

    97 

    98         // when all is said & done, baseURL shouldn't be null

    99         if (baseURL == null)

   100                 baseURL = documentURL;

   101 

   102 

   103     }

   104 

   105     /**

   106      * Get an applet parameter.

   107      */

   108     public String getParameter(String name) {

   109         return (String)atts.get(name.toLowerCase());

   110     }

   111 

   112     /**

   113      * Get the document url.

   114      */

   115     public URL getDocumentBase() {

   116         return documentURL;

   117 

   118     }

   119 

   120     /**

   121      * Get the base url.

   122      */

   123     public URL getCodeBase() {

   124         return baseURL;

   125     }

   126 

   127     /**

   128      * Get the width.

   129      */

   130     public int getWidth() {

   131         String w = getParameter("width");

   132         if (w != null) {

   133             return Integer.valueOf(w).intValue();

   134         }

   135         return 0;

   136     }

   137 

   138 

   139     /**

   140      * Get the height.

   141      */

   142     public int getHeight() {

   143         String h = getParameter("height");

   144         if (h != null) {

   145             return Integer.valueOf(h).intValue();

   146         }

   147         return 0;

   148     }

   149 

   150     /**

   151      * Get initial_focus

   152      */

   153     public boolean hasInitialFocus()

   154     {

   155 

   156         // 6234219: Do not set initial focus on an applet

   157         // during startup if applet is targeted for

   158         // JDK 1.1/1.2. [stanley.ho]

   159         if (isJDK11Applet() || isJDK12Applet())

   160             return false;

   161 

   162         String initialFocus = getParameter("initial_focus");

   163 

   164         if (initialFocus != null)

   165         {

   166             if (initialFocus.toLowerCase().equals("false"))

   167                 return false;

   168         }

   169 

   170         return true;

   171     }

   172 

   173     /**

   174      * Get the code parameter

   175      */

   176     public String getCode() {

   177         return getParameter("code");

   178     }

   179 

   180 

   181     /**

   182      * Return the list of jar files if specified.

   183      * Otherwise return null.

   184      */

   185     public String getJarFiles() {

   186         return getParameter("archive");

   187     }

   188 

   189     /**

   190      * Return the value of the object param

   191      */

   192     public String getSerializedObject() {

   193         return getParameter("object");// another name?

   194     }

   195 

   196 

   197     /**

   198      * Get the applet context. For now this is

   199      * also implemented by the AppletPanel class.

   200      */

   201     public AppletContext getAppletContext() {

   202         return (AppletContext)getParent();

   203     }

   204 

   205     static void debug(String s) {

   206         if(debug)

   207             System.err.println("AppletViewerPanel:::" + s);

   208     }

   209 

   210     static void debug(String s, Throwable t) {

   211         if(debug) {

   212             t.printStackTrace();

   213             debug(s);

   214         }

   215     }

   216 }