1 /*
2 * Copyright (c) 2011, 2018, 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 com.sun.javafx.application;
27
28 import java.awt.Desktop;
29 import java.io.File;
30 import java.net.URI;
31 import javafx.application.Application;
32
33 public abstract class HostServicesDelegate {
34
35 public static HostServicesDelegate getInstance(final Application app) {
36 return StandaloneHostService.getInstance(app);
37 }
38
39 protected HostServicesDelegate() {
40 }
41
42 public abstract String getCodeBase();
43
44 public abstract String getDocumentBase();
45
46 public abstract void showDocument(String uri);
47
48 // StandaloneHostService implementation
49 private static class StandaloneHostService extends HostServicesDelegate {
50
51 private static HostServicesDelegate instance = null;
52
53 private Class appClass = null;
54
55 public static HostServicesDelegate getInstance(Application app) {
56 synchronized (StandaloneHostService.class) {
57 if (instance == null) {
58 instance = new StandaloneHostService(app);
59 }
60 return instance;
61 }
62 }
63
64 private StandaloneHostService(Application app) {
65 appClass = app.getClass();
66 }
67
68 @Override
69 public String getCodeBase() {
70 // If the application was launched in standalone mode, this method
71 // returns the directory containing the application jar file.
72 // If the application is not packaged in a jar file, this method
73 // returns the empty string.
74 String theClassFile = appClass.getName();
75 int idx = theClassFile.lastIndexOf(".");
76 if (idx >= 0) {
77 // Strip off package name prefix in class name if exists
78 // getResoruce will automatically add in package name during
79 // lookup; see Class.getResource javadoc for more details
80 theClassFile = theClassFile.substring(idx + 1);
81 }
82 theClassFile = theClassFile + ".class";
83
84 String classUrlString = appClass.getResource(theClassFile).toString();
85 if (!classUrlString.startsWith("jar:file:") ||
86 classUrlString.indexOf("!") == -1) {
87 return "";
88 }
89 // Strip out the "jar:" and everything after and including the "!"
90 String urlString = classUrlString.substring(4,
91 classUrlString.lastIndexOf("!"));
92 File jarFile = null;
93 try {
94 jarFile = new File(new URI(urlString).getPath());
95 } catch (Exception e) {
96 // should not happen
97 }
98 if (jarFile != null) {
99 String codebase = jarFile.getParent();
100 if (codebase != null) {
101 return toURIString(codebase);
102 }
103 }
104
105 return "";
106 }
107
108 private String toURIString(String filePath) {
109 try {
110 return new File(filePath).toURI().toString();
111 } catch (Exception e) {
112 // should not happen
113 // dump stack for debug purpose
114 e.printStackTrace();
115 }
116 return "";
117 }
118
119 @Override public String getDocumentBase() {
120 // If the application was launched in standalone mode,
121 // this method returns the URI of the current directory.
122 return toURIString(System.getProperty("user.dir"));
123 }
124
125 static final String[] browsers = {"google-chrome", "firefox", "opera",
126 "konqueror", "mozilla"};
127
128 @Override
129 public void showDocument(final String uri) {
130 String osName = System.getProperty("os.name");
131 try {
132 if (osName.startsWith("Mac OS")) {
133 Desktop.getDesktop().browse(URI.create(uri));
134 } else if (osName.startsWith("Windows")) {
135 Runtime.getRuntime().exec(
136 "rundll32 url.dll,FileProtocolHandler " + uri);
137 } else { //assume Unix or Linux
138 String browser = null;
139 for (String b : browsers) {
140 if (browser == null && Runtime.getRuntime().exec(
141 new String[]{"which", b}).getInputStream().read() != -1) {
142 Runtime.getRuntime().exec(new String[]{browser = b, uri});
143 }
144 }
145 if (browser == null) {
146 throw new Exception("No web browser found");
147 }
148 }
149 } catch (Exception e) {
150 // should not happen
151 // dump stack for debug purpose
152 e.printStackTrace();
153 }
154 }
155 }
156 }