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 Stream.of(args).forEach(arg -> System.out.println(
54 arg.codePoints()
55 .mapToObj(codePoint -> String.format("0x%04x", codePoint))
56 .collect(Collectors.joining(",", "[", "]"))));
57
58 lines.forEach(System.out::println);
59
60 var outputFile = getOutputFile(args);
61 trace(String.format("Output file: [%s]", outputFile));
62 Files.write(outputFile, lines);
63 }
64
65 private static List<String> printArgs(String[] args) {
66 List<String> lines = new ArrayList<>();
67 lines.add(MSG);
68
69 lines.add("args.length: " + args.length);
70
71 lines.addAll(List.of(args));
72
73 for (int index = 1; index <= EXPECTED_NUM_OF_PARAMS; index++) {
74 String value = System.getProperty("param" + index);
75 if (value != null) {
76 lines.add("-Dparam" + index + "=" + value);
77 }
78 }
79
80 return lines;
81 }
82
83 private static Path getOutputFile(String[] args) {
84 Path outputFilePath = Path.of("appOutput.txt");
85
86 // If first arg is a file (most likely from fa), then put output in the same folder as
87 // the file from fa.
88 if (args.length >= 1) {
89 Path faPath = Path.of(args[0]);
90 if (Files.exists(faPath)) {
91 return faPath.toAbsolutePath().getParent().resolve(outputFilePath);
92 }
93 }
94
95 try {
96 // Try writing in the default output file.
97 Files.write(outputFilePath, Collections.emptyList());
98 return outputFilePath;
99 } catch (IOException ex) {
100 // Log reason of a failure.
101 StringWriter errors = new StringWriter();
102 ex.printStackTrace(new PrintWriter(errors));
103 Stream.of(errors.toString().split("\\R")).forEachOrdered(Hello::trace);
104 }
105
106 return Path.of(System.getProperty("user.home")).resolve(outputFilePath);
107 }
108
109 @Override
110 public void openFiles(OpenFilesEvent e) {
111 synchronized(lock) {
112 trace("openFiles");
113 files = e.getFiles().stream()
114 .map(File::toString)
115 .collect(Collectors.toList());
116
117 lock.notifyAll();
118 }
119 }
120
121 private static List<String> getFaFiles() throws InterruptedException {
122 if (openFilesHandler == null) {
123 return null;
124 }
125
126 synchronized(openFilesHandler.lock) {
127 trace("getFaFiles: wait");
128 openFilesHandler.lock.wait(1000);
129 if (openFilesHandler.files == null) {
130 trace(String.format("getFaFiles: no files"));
131 return null;
132 }
133 // Return copy of `files` to keep access to `files` field synchronized.
134 trace(String.format("getFaFiles: file count %d",
135 openFilesHandler.files.size()));
136 return new ArrayList<>(openFilesHandler.files);
137 }
138 }
139
140 private List<String> files;
141 private final Object lock = new Object();
142 private final static Hello openFilesHandler = createInstance();
143
144 private static Hello createInstance() {
145 if (GraphicsEnvironment.isHeadless()) {
146 return null;
147 }
148
149 trace("Environment supports a display");
150
151 try {
152 // Disable JAB.
153 // Needed to suppress error:
154 // Exception in thread "main" java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
155 System.setProperty("javax.accessibility.assistive_technologies", "");
156 } catch (SecurityException ex) {
157 ex.printStackTrace();
158 }
159
160 try {
161 var desktop = Desktop.getDesktop();
162 if (desktop.isSupported(Desktop.Action.APP_OPEN_FILE)) {
163 trace("Set file handler");
164 Hello instance = new Hello();
165 desktop.setOpenFileHandler(instance);
166 return instance;
167 }
168 } catch (AWTError ex) {
169 trace("Set file handler failed");
170 ex.printStackTrace();
171 }
172
173 return null;
174 }
175
176 private static final String MSG = "jpackage test application";
177 private static final int EXPECTED_NUM_OF_PARAMS = 3; // Starts at 1
178
179 private static void trace(String msg) {
180 System.out.println("hello: " + msg);
181 }
182 }