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1
20
21 package org.jdesktop.jdic.browser;
22
23 import java.util.Vector  ;
24 import java.awt.*;
25 import javax.swing.SwingUtilities ;
26 import java.security.*;
27 import java.io.*;
28
29 import org.jdesktop.jdic.browser.internal.WebBrowserUtil;
30 import org.jdesktop.jdic.init.JdicManager;
31
40 class NativeEventThread extends Thread
41 {
42 private Vector webBrowsers = new Vector ();
43 private Vector nativeEvents = new Vector ();
45 private Process nativeBrowser;
46
47 boolean eventRetBool;
48 String eventRetString;
49
50 MsgClient messenger = new MsgClient();
51
52 NativeEventThread() {
53 super("EventThread");
54 }
55
56 void attachWebBrowser(WebBrowser webBrowser) {
57 int instanceNum = webBrowser.getInstanceNum();
58 if (instanceNum >= webBrowsers.size()) {
59 webBrowsers.setSize(instanceNum + 1);
60 }
61 webBrowsers.set(instanceNum, webBrowser);
62 }
63
64 public void run() {
65 try {
67 if (WebBrowserUtil.getEmbedBinaryName() == null) {
68 setBrowsersInitFailReason("The embedded browser binary is " +
69 "not set.");
70 WebBrowserUtil.trace("The embedded browser binary is not set, " +
71 "system exit.");
72 return;
73 }
74 String jvmVendor = System.getProperty("java.vm.vendor");
75 if (WebBrowserUtil.getEmbedBinaryName().endsWith("IeEmbed.exe")
76 && jvmVendor.startsWith("Sun"))
77 WebBrowserUtil.nativeSetEnv();
78 String filepath = JdicManager.getManager().getBinaryPath()+
79 File.separator+WebBrowserUtil.getEmbedBinaryName();
80 final String cmd = (new File(filepath).exists()) ? filepath
81 : WebBrowserUtil.getEmbedBinaryName();
82 WebBrowserUtil.trace("Executing " + cmd);
83 AccessController.doPrivileged(
84 new PrivilegedExceptionAction() {
85 public Object run() throws IOException {
86 nativeBrowser = Runtime.getRuntime().exec(
87 new String []{cmd, "-port=" + messenger.getPort()});
88 new StreamGobbler(nativeBrowser.getErrorStream()).start();
89 new StreamGobbler(nativeBrowser.getInputStream()).start();
90 return null;
91 }
92 }
93 );
94 } catch (PrivilegedActionException e) {
95 setBrowsersInitFailReason("Can't find the native embedded browser.");
96 System.out.println("Can't execute the native embedded browser. " +
97 "Error message: " + e.getCause().getMessage());
98 return;
99 }
100
101 try {
103 AccessController.doPrivileged(
104 new PrivilegedExceptionAction() {
105 public Object run() throws Exception {
106 messenger.connect();
107 return null;
108 }
109 }
110 );
111 } catch (PrivilegedActionException e) {
112 System.out.println("Can't connect to the native embedded " +
113 "browser. Error message: " + e.getCause().getMessage());
114 setBrowsersInitFailReason("Can't connect to the native embedded " +
115 "browser.");
116 return;
117 }
118
119 while (true) {
121 try {
122 Thread.sleep(1);
123 } catch (Exception e) {
124 }
125
126 try {
127 int exitValue = nativeBrowser.exitValue();
128 WebBrowserUtil.trace("Native embedded browser died.");
129 return;
130 } catch (IllegalThreadStateException e) {
131 }
132
133 try {
134 processEvents();
135 } catch (Exception e) {
136 WebBrowserUtil.trace("Exception occured when processEvent: "
137 + e.getMessage());
138 return;
139 }
140
141 try {
142 messenger.portListening();
143 processIncomingMessage(messenger.getMessage());
144 } catch (Exception e) {
145 WebBrowserUtil.trace("Exception occured when portListening: "
146 + e.getMessage());
147 return;
148 }
149 }
150 }
151
152 private WebBrowser getWebBrowserFromInstance(int instance) {
153 try {
154 return (WebBrowser) webBrowsers.get(instance);
155 } catch (Exception e) {
156 return null;
157 }
158 }
159
160 private void notifyWebBrowser(int instance) {
161 WebBrowser browser = getWebBrowserFromInstance(instance);
162 if (null != browser) {
163 synchronized(browser) {
164 browser.notify();
165 }
166 }
167 }
168
169
172 private void processEvents() {
173 int size = nativeEvents.size();
174 for (int i = 0; i < size; ++i) {
175 NativeEventData nativeEvent = (NativeEventData) nativeEvents.get(i);
176 if (processEvent(nativeEvent)) {
177 nativeEvents.removeElementAt(i);
178 break;
179 }
180 }
181 }
182
183 private boolean processEvent(NativeEventData nativeEvent) {
184 WebBrowser browser = getWebBrowserFromInstance(nativeEvent.instance);
185 if (null == browser) {
186 return true;
187 }
188
189 if (! browser.isInitialized() &&
190 (nativeEvent.type != NativeEventData.EVENT_INIT &&
191 nativeEvent.type != NativeEventData.EVENT_CREATEWINDOW)) {
192 return false;
193 }
194
195 WebBrowserUtil.trace("Got event: type = " + nativeEvent.type +
196 " instance = " + nativeEvent.instance);
197
198 String msg = nativeEvent.instance + "," + nativeEvent.type + ",";
199 switch (nativeEvent.type) {
200 case NativeEventData.EVENT_INIT:
201 case NativeEventData.EVENT_DESTROYWINDOW:
202 case NativeEventData.EVENT_GOBACK:
203 case NativeEventData.EVENT_GOFORWARD:
204 case NativeEventData.EVENT_REFRESH:
205 case NativeEventData.EVENT_STOP:
206 case NativeEventData.EVENT_GETURL:
207 case NativeEventData.EVENT_FOCUSGAINED:
208 case NativeEventData.EVENT_FOCUSLOST:
209 case NativeEventData.EVENT_GETCONTENT:
210 messenger.sendMessage(msg);
211 break;
212 case NativeEventData.EVENT_SHUTDOWN:
213 messenger.sendMessage(msg);
214 break;
215 case NativeEventData.EVENT_CREATEWINDOW:
216 int nativeWindow = browser.getNativeWindow();
217 if (0 == nativeWindow) {
218 WebBrowserUtil.trace("Can't get the JAWT window handler. " +
219 "Make sure the environment variable JAVA_HOME " +
220 "is set.");
221 }
222 else {
223 msg += nativeWindow;
224 messenger.sendMessage(msg);
225 }
226 break;
227 case NativeEventData.EVENT_SET_BOUNDS:
228 msg += nativeEvent.rectValue.x + "," +
229 nativeEvent.rectValue.y + "," +
230 nativeEvent.rectValue.width + "," +
231 nativeEvent.rectValue.height;
232 messenger.sendMessage(msg);
233 break;
234 case NativeEventData.EVENT_NAVIGATE:
235 case NativeEventData.EVENT_NAVIGATE_POST:
236 case NativeEventData.EVENT_NAVIGATE_POSTDATA:
237 case NativeEventData.EVENT_SETCONTENT:
238 case NativeEventData.EVENT_EXECUTESCRIPT:
239 msg += nativeEvent.stringValue;
240 messenger.sendMessage(msg);
241 break;
242 }
243
244 return true;
245 }
246
247 static NativeEventData parseIncomingMessage(String msg) {
248 if (null == msg || 0 == msg.length()) {
249 return null;
250 }
251
252 int eventType = -1;
253 String stringValue = null;
254
255 int pos1 = msg.indexOf(",", 0);
256 int instance = Integer.parseInt(msg.substring(0, pos1));
257 int pos2 = msg.indexOf(",", pos1 + 1);
258 if (pos2 < 0) {
259 eventType = Integer.parseInt(msg.substring(pos1 + 1));
260 }
261 else {
262 eventType = Integer.parseInt(msg.substring(pos1 + 1, pos2));
263 if (pos2 + 1 < msg.length())
264 stringValue = msg.substring(pos2 + 1);
265 }
266
267 return new NativeEventData(instance, eventType, stringValue);
268 }
269
270
273 private void processIncomingMessage(String msg) {
274 NativeEventData eventData = parseIncomingMessage(msg);
275 if (eventData == null)
276 return;
277
278 WebBrowserUtil.trace("Got event from browser " + eventData.instance
279 + ", " + eventData.type + ", " + eventData.stringValue);
280
281 if (WebBrowserEvent.WEBBROWSER_INIT_FAILED == eventData.type) {
282 setBrowsersInitFailReason(eventData.stringValue);
283 return;
284 }
285
286 if (eventData.instance < 0) {
287 return;
288 }
289
290 if (WebBrowserEvent.WEBBROWSER_RETURN_URL == eventData.type ||
291 WebBrowserEvent.WEBBROWSER_GETCONTENT == eventData.type ||
292 WebBrowserEvent.WEBBROWSER_EXECUTESCRIPT == eventData.type) {
293 eventRetString = eventData.stringValue;
294 notifyWebBrowser(eventData.instance);
295 return;
296 }
297
298 final WebBrowser browser = getWebBrowserFromInstance(eventData.instance);
300 if (null == browser) {
301 return;
302 }
303
304 if (WebBrowserEvent.WEBBROWSER_INIT_WINDOW_SUCC == eventData.type) {
305 browser.setInitialized(true);
306 browser.setInitFailureMessage("");
307 return;
308 }
309
310 final WebBrowserEvent event = new WebBrowserEvent(browser,
311 eventData.type, eventData.stringValue);
312
313 Runnable dispatchEvent = new Runnable () {
316 public void run() {
317 browser.dispatchWebBrowserEvent(event);
318 }
319 };
320
321 try {
322 SwingUtilities.invokeLater(dispatchEvent);
323 } catch (Exception e) {
324 WebBrowserUtil.trace("Exception occured when invokeLater. " +
325 "Error message: " + e.getMessage());
326 }
327 }
328
329 synchronized void fireNativeEvent(int instance, int type) {
330 nativeEvents.addElement(new NativeEventData(instance, type));
331 }
332
333 synchronized void fireNativeEvent(int instance, int type,
334 Rectangle rectValue) {
335 nativeEvents.addElement(new NativeEventData(instance, type, rectValue));
336 }
337
338 synchronized void fireNativeEvent(int instance, int type,
339 String stringValue) {
340 nativeEvents.addElement(
341 new NativeEventData(instance, type, stringValue));
342 }
343
344 void setBrowsersInitFailReason(String msg) {
345 ((WebBrowser)webBrowsers.elementAt(0)).setInitFailureMessage(msg);
346 }
347
348 class StreamGobbler extends Thread {
349 InputStream is;
350
351 StreamGobbler(InputStream is) {
352 this.is = is;
353 }
354
355 public void run() {
356 try {
357 InputStreamReader isr = new InputStreamReader(is);
358 BufferedReader br = new BufferedReader(isr);
359 String line = null;
360 while ((line = br.readLine()) != null) {
361 System.out.println("+++ Ctrace: " + line);
362 }
363 } catch (IOException e) {
364 e.printStackTrace();
365 }
366 }
367 }
368
369 }
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