1 /*
2 * Copyright (c) 1995, 2005, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * 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
35
36 /**
37 * Sample applet panel class. The panel manages and manipulates the
38 * applet as it is being loaded. It forks a seperate thread in a new
39 * thread group to call the applet's init(), start(), stop(), and
40 * destroy() methods.
41 *
42 * @author Arthur van Hoff
43 */
44 class AppletViewerPanel extends AppletPanel {
45
46 /* Are we debugging? */
47 static boolean debug = false;
48
49 /**
50 * The document url.
51 */
52 URL documentURL;
53
54 /**
55 * The base url.
56 */
57 URL baseURL;
58
59 /**
60 * The attributes of the applet.
61 */
62 Hashtable<String, String> atts;
63
64 /*
65 * JDK 1.1 serialVersionUID
66 */
67 private static final long serialVersionUID = 8890989370785545619L;
68
69 /**
70 * Construct an applet viewer and start the applet.
71 */
72 AppletViewerPanel(URL documentURL, Hashtable<String, String> atts) {
73 this.documentURL = documentURL;
74 this.atts = atts;
75
76 String att = getParameter("codebase");
77 if (att != null) {
78 if (!att.endsWith("/")) {
79 att += "/";
80 }
81 try {
82 baseURL = new URL(documentURL, att);
83 } catch (MalformedURLException e) {
84 }
85 }
86 if (baseURL == null) {
87 String file = documentURL.getFile();
88 int i = file.lastIndexOf('/');
89 if (i >= 0 && i < file.length() - 1) {
90 try {
91 baseURL = new URL(documentURL, file.substring(0, i + 1));
92 } catch (MalformedURLException e) {
93 }
94 }
95 }
96
97 // when all is said & done, baseURL shouldn't be null
98 if (baseURL == null)
99 baseURL = documentURL;
100
101
102 }
103
104 /**
105 * Get an applet parameter.
106 */
107 public String getParameter(String name) {
108 return atts.get(name.toLowerCase());
109 }
110
111 /**
112 * Get the document url.
113 */
114 public URL getDocumentBase() {
115 return documentURL;
116
117 }
118
119 /**
120 * Get the base url.
121 */
122 public URL getCodeBase() {
123 return baseURL;
124 }
125
126 /**
127 * Get the width.
128 */
129 public int getWidth() {
130 String w = getParameter("width");
131 if (w != null) {
132 return Integer.valueOf(w).intValue();
133 }
134 return 0;
135 }
136
137
138 /**
139 * Get the height.
140 */
141 public int getHeight() {
142 String h = getParameter("height");
143 if (h != null) {
144 return Integer.valueOf(h).intValue();
145 }
146 return 0;
147 }
148
149 /**
150 * Get initial_focus
151 */
152 public boolean hasInitialFocus()
153 {
154
155 // 6234219: Do not set initial focus on an applet
156 // during startup if applet is targeted for
157 // JDK 1.1/1.2. [stanley.ho]
158 if (isJDK11Applet() || isJDK12Applet())
159 return false;
160
161 String initialFocus = getParameter("initial_focus");
162
163 if (initialFocus != null)
164 {
165 if (initialFocus.toLowerCase().equals("false"))
166 return false;
167 }
168
169 return true;
170 }
171
172 /**
173 * Get the code parameter
174 */
175 public String getCode() {
176 return getParameter("code");
177 }
178
179
180 /**
181 * Return the list of jar files if specified.
182 * Otherwise return null.
183 */
184 public String getJarFiles() {
185 return getParameter("archive");
186 }
187
188 /**
189 * Return the value of the object param
190 */
191 public String getSerializedObject() {
192 return getParameter("object");// another name?
193 }
194
195
196 /**
197 * Get the applet context. For now this is
198 * also implemented by the AppletPanel class.
199 */
200 public AppletContext getAppletContext() {
201 return (AppletContext)getParent();
202 }
203
204 static void debug(String s) {
205 if(debug)
206 System.err.println("AppletViewerPanel:::" + s);
207 }
208
209 static void debug(String s, Throwable t) {
210 if(debug) {
211 t.printStackTrace();
212 debug(s);
213 }
214 }
215 }