1 /*
2 * Copyright (c) 2018, 2019, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.awt.AWTError;
25 import java.awt.Desktop;
26 import java.awt.GraphicsEnvironment;
27 import java.awt.desktop.OpenFilesEvent;
28 import java.awt.desktop.OpenFilesHandler;
29 import java.io.File;
30 import java.io.IOException;
31 import java.io.PrintWriter;
32 import java.io.StringWriter;
33 import java.nio.file.Path;
34 import java.nio.file.Files;
35 import java.util.stream.Collectors;
36 import java.util.List;
37 import java.util.ArrayList;
38 import java.util.stream.Stream;
39 import java.util.Collections;
40
41 public class Hello implements OpenFilesHandler {
42
43 public static void main(String[] args) throws IOException, InterruptedException {
44 var faFiles = getFaFiles();
45 if (faFiles != null) {
46 // Some files got opened through fa mechanizm.
47 // They are the arguments then.
48 args = faFiles.toArray(String[]::new);
49 }
50
51 var lines = printArgs(args);
52
53 lines.forEach(System.out::println);
54
55 var outputFile = getOutputFile(args);
56 trace(String.format("Output file: [%s]", outputFile));
57 Files.write(outputFile, lines);
58 }
59
60 private static List<String> printArgs(String[] args) {
61 List<String> lines = new ArrayList<>();
62 lines.add(MSG);
63
64 lines.add("args.length: " + args.length);
65
66 lines.addAll(List.of(args));
67
68 for (int index = 1; index <= EXPECTED_NUM_OF_PARAMS; index++) {
69 String value = System.getProperty("param" + index);
70 if (value != null) {
71 lines.add("-Dparam" + index + "=" + value);
72 }
73 }
74
75 return lines;
76 }
77
78 private static Path getOutputFile(String[] args) {
79 Path outputFilePath = Path.of("appOutput.txt");
80
81 // If first arg is a file (most likely from fa), then put output in the same folder as
82 // the file from fa.
83 if (args.length >= 1) {
84 Path faPath = Path.of(args[0]);
85 if (Files.exists(faPath)) {
86 return faPath.toAbsolutePath().getParent().resolve(outputFilePath);
87 }
88 }
89
90 try {
91 // Try writing in the default output file.
92 Files.write(outputFilePath, Collections.emptyList());
93 return outputFilePath;
94 } catch (IOException ex) {
95 // Log reason of a failure.
96 StringWriter errors = new StringWriter();
97 ex.printStackTrace(new PrintWriter(errors));
98 Stream.of(errors.toString().split("\\R")).forEachOrdered(Hello::trace);
99 }
100
101 return Path.of(System.getProperty("user.home")).resolve(outputFilePath);
102 }
103
104 @Override
105 public void openFiles(OpenFilesEvent e) {
106 synchronized(lock) {
107 trace("openFiles");
108 files = e.getFiles().stream()
109 .map(File::toString)
110 .collect(Collectors.toList());
111
112 lock.notifyAll();
113 }
114 }
115
116 private static List<String> getFaFiles() throws InterruptedException {
117 if (openFilesHandler == null) {
118 return null;
119 }
120
121 synchronized(openFilesHandler.lock) {
122 trace("getFaFiles: wait");
123 openFilesHandler.lock.wait(1000);
124 if (openFilesHandler.files == null) {
125 trace(String.format("getFaFiles: no files"));
126 return null;
127 }
128 // Return copy of `files` to keep access to `files` field synchronized.
129 trace(String.format("getFaFiles: file count %d",
130 openFilesHandler.files.size()));
131 return new ArrayList<>(openFilesHandler.files);
132 }
133 }
134
135 private List<String> files;
136 private final Object lock = new Object();
137 private final static Hello openFilesHandler = createInstance();
138
139 private static Hello createInstance() {
140 if (GraphicsEnvironment.isHeadless()) {
141 return null;
142 }
143
144 trace("Environment supports a display");
145
146 try {
147 // Disable JAB.
148 // Needed to suppress error:
149 // Exception in thread "main" java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
150 System.setProperty("javax.accessibility.assistive_technologies", "");
151 } catch (SecurityException ex) {
152 ex.printStackTrace();
153 }
154
155 try {
156 var desktop = Desktop.getDesktop();
157 if (desktop.isSupported(Desktop.Action.APP_OPEN_FILE)) {
158 trace("Set file handler");
159 Hello instance = new Hello();
160 desktop.setOpenFileHandler(instance);
161 return instance;
162 }
163 } catch (AWTError ex) {
164 trace("Set file handler failed");
165 ex.printStackTrace();
166 }
167
168 return null;
169 }
170
171 private static final String MSG = "jpackage test application";
172 private static final int EXPECTED_NUM_OF_PARAMS = 3; // Starts at 1
173
174 private static void trace(String msg) {
175 System.out.println("hello: " + msg);
176 }
177 }