1 /*
2 * Copyright (c) 1995, 2014, 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.awt.*;
31 import java.awt.event.*;
32 import java.awt.print.*;
33 import javax.print.attribute.*;
34 import java.applet.*;
35 import java.net.URL;
36 import java.net.SocketPermission;
37 import java.security.AccessController;
38 import java.security.PrivilegedAction;
39 import sun.awt.SunToolkit;
40 import sun.awt.AppContext;
41
42 /**
43 * A frame to show the applet tag in.
44 */
45 @SuppressWarnings("serial") // JDK-implementation class
46 final class TextFrame extends Frame {
47
48 /**
49 * Create the tag frame.
50 */
51 TextFrame(int x, int y, String title, String text) {
52 setTitle(title);
53 TextArea txt = new TextArea(20, 60);
54 txt.setText(text);
55 txt.setEditable(false);
56
57 add("Center", txt);
58
59 Panel p = new Panel();
60 add("South", p);
61 Button b = new Button(amh.getMessage("button.dismiss", "Dismiss"));
62 p.add(b);
63
64 class ActionEventListener implements ActionListener {
65 @Override
66 public void actionPerformed(ActionEvent evt) {
67 dispose();
68 }
69 }
70 b.addActionListener(new ActionEventListener());
71
72 pack();
73 move(x, y);
74 setVisible(true);
75
76 WindowListener windowEventListener = new WindowAdapter() {
77
78 @Override
79 public void windowClosing(WindowEvent evt) {
80 dispose();
81 }
82 };
83
84 addWindowListener(windowEventListener);
85 }
86 private static AppletMessageHandler amh = new AppletMessageHandler("textframe");
87
88 }
89
90 /**
91 * Lets us construct one using unix-style one shot behaviors.
92 */
93 final class StdAppletViewerFactory implements AppletViewerFactory {
94
95 @Override
96 public AppletViewer createAppletViewer(int x, int y,
97 URL doc, Hashtable<String, String> atts) {
98 return new AppletViewer(x, y, doc, atts, System.out, this);
99 }
100
101 @Override
102 public MenuBar getBaseMenuBar() {
103 return new MenuBar();
104 }
105
106 @Override
107 public boolean isStandalone() {
108 return true;
109 }
110 }
111
112 /**
113 * The applet viewer makes it possible to run a Java applet without using a browser.
114 * For details on the syntax that <B>appletviewer</B> supports, see
115 * <a href="../../../docs/tooldocs/appletviewertags.html">AppletViewer Tags</a>.
116 * (The document named appletviewertags.html in the JDK's docs/tooldocs directory,
117 * once the JDK docs have been installed.)
118 */
119 @SuppressWarnings("serial") // JDK implementation class
120 public class AppletViewer extends Frame implements AppletContext, Printable {
121
122 /**
123 * Some constants...
124 */
125 private static String defaultSaveFile = "Applet.ser";
126
127 /**
128 * The panel in which the applet is being displayed.
129 */
130 AppletViewerPanel panel;
131
132 /**
133 * The status line.
134 */
135 Label label;
136
137 /**
138 * output status messages to this stream
139 */
140
141 PrintStream statusMsgStream;
142
143 /**
144 * For cloning
145 */
146 AppletViewerFactory factory;
147
148
149 private final class UserActionListener implements ActionListener {
150 @Override
151 public void actionPerformed(ActionEvent evt) {
152 processUserAction(evt);
153 }
154 }
155
156 /**
157 * Create the applet viewer.
158 */
159 public AppletViewer(int x, int y, URL doc, Hashtable<String, String> atts,
160 PrintStream statusMsgStream, AppletViewerFactory factory) {
161 this.factory = factory;
162 this.statusMsgStream = statusMsgStream;
163 setTitle(amh.getMessage("tool.title", atts.get("code")));
164
165 MenuBar mb = factory.getBaseMenuBar();
166
167 Menu m = new Menu(amh.getMessage("menu.applet"));
168
169 addMenuItem(m, "menuitem.restart");
170 addMenuItem(m, "menuitem.reload");
171 addMenuItem(m, "menuitem.stop");
172 addMenuItem(m, "menuitem.save");
173 addMenuItem(m, "menuitem.start");
174 addMenuItem(m, "menuitem.clone");
175 m.add(new MenuItem("-"));
176 addMenuItem(m, "menuitem.tag");
177 addMenuItem(m, "menuitem.info");
178 addMenuItem(m, "menuitem.edit").disable();
179 addMenuItem(m, "menuitem.encoding");
180 m.add(new MenuItem("-"));
181 addMenuItem(m, "menuitem.print");
182 m.add(new MenuItem("-"));
183 addMenuItem(m, "menuitem.props");
184 m.add(new MenuItem("-"));
185 addMenuItem(m, "menuitem.close");
186 if (factory.isStandalone()) {
187 addMenuItem(m, "menuitem.quit");
188 }
189
190 mb.add(m);
191
192 setMenuBar(mb);
193
194 add("Center", panel = new AppletViewerPanel(doc, atts));
195 add("South", label = new Label(amh.getMessage("label.hello")));
196 panel.init();
197 appletPanels.addElement(panel);
198
199 pack();
200 move(x, y);
201 setVisible(true);
202
203 WindowListener windowEventListener = new WindowAdapter() {
204
205 @Override
206 public void windowClosing(WindowEvent evt) {
207 appletClose();
208 }
209
210 @Override
211 public void windowIconified(WindowEvent evt) {
212 appletStop();
213 }
214
215 @Override
216 public void windowDeiconified(WindowEvent evt) {
217 appletStart();
218 }
219 };
220
221 class AppletEventListener implements AppletListener
222 {
223 final Frame frame;
224
225 public AppletEventListener(Frame frame)
226 {
227 this.frame = frame;
228 }
229
230 @Override
231 public void appletStateChanged(AppletEvent evt)
232 {
233 AppletPanel src = (AppletPanel)evt.getSource();
234
235 switch (evt.getID()) {
236 case AppletPanel.APPLET_RESIZE: {
237 if(src != null) {
238 resize(preferredSize());
239 validate();
240 }
241 break;
242 }
243 case AppletPanel.APPLET_LOADING_COMPLETED: {
244 Applet a = src.getApplet(); // sun.applet.AppletPanel
245
246 // Fixed #4754451: Applet can have methods running on main
247 // thread event queue.
248 //
249 // The cause of this bug is that the frame of the applet
250 // is created in main thread group. Thus, when certain
251 // AWT/Swing events are generated, the events will be
252 // dispatched through the wrong event dispatch thread.
253 //
254 // To fix this, we rearrange the AppContext with the frame,
255 // so the proper event queue will be looked up.
256 //
257 // Swing also maintains a Frame list for the AppContext,
258 // so we will have to rearrange it as well.
259 //
260 if (a != null)
261 AppletPanel.changeFrameAppContext(frame, SunToolkit.targetToAppContext(a));
262 else
263 AppletPanel.changeFrameAppContext(frame, AppContext.getAppContext());
264
265 break;
266 }
267 }
268 }
269 };
270
271 addWindowListener(windowEventListener);
272 panel.addAppletListener(new AppletEventListener(this));
273
274 // Start the applet
275 showStatus(amh.getMessage("status.start"));
276 initEventQueue();
277 }
278
279 // XXX 99/9/10 probably should be "private"
280 public MenuItem addMenuItem(Menu m, String s) {
281 MenuItem mItem = new MenuItem(amh.getMessage(s));
282 mItem.addActionListener(new UserActionListener());
283 return m.add(mItem);
284 }
285
286 /**
287 * Send the initial set of events to the appletviewer event queue.
288 * On start-up the current behaviour is to load the applet and call
289 * Applet.init() and Applet.start().
290 */
291 private void initEventQueue() {
292 // appletviewer.send.event is an undocumented and unsupported system
293 // property which is used exclusively for testing purposes.
294 String eventList = System.getProperty("appletviewer.send.event");
295
296 if (eventList == null) {
297 // Add the standard events onto the event queue.
298 panel.sendEvent(AppletPanel.APPLET_LOAD);
299 panel.sendEvent(AppletPanel.APPLET_INIT);
300 panel.sendEvent(AppletPanel.APPLET_START);
301 } else {
302 // We're testing AppletViewer. Force the specified set of events
303 // onto the event queue, wait for the events to be processed, and
304 // exit.
305
306 // The list of events that will be executed is provided as a
307 // ","-separated list. No error-checking will be done on the list.
308 String [] events = splitSeparator(",", eventList);
309
310 for (int i = 0; i < events.length; i++) {
311 System.out.println("Adding event to queue: " + events[i]);
312 if (events[i].equals("dispose"))
313 panel.sendEvent(AppletPanel.APPLET_DISPOSE);
314 else if (events[i].equals("load"))
315 panel.sendEvent(AppletPanel.APPLET_LOAD);
316 else if (events[i].equals("init"))
317 panel.sendEvent(AppletPanel.APPLET_INIT);
318 else if (events[i].equals("start"))
319 panel.sendEvent(AppletPanel.APPLET_START);
320 else if (events[i].equals("stop"))
321 panel.sendEvent(AppletPanel.APPLET_STOP);
322 else if (events[i].equals("destroy"))
323 panel.sendEvent(AppletPanel.APPLET_DESTROY);
324 else if (events[i].equals("quit"))
325 panel.sendEvent(AppletPanel.APPLET_QUIT);
326 else if (events[i].equals("error"))
327 panel.sendEvent(AppletPanel.APPLET_ERROR);
328 else
329 // non-fatal error if we get an unrecognized event
330 System.out.println("Unrecognized event name: " + events[i]);
331 }
332
333 while (!panel.emptyEventQueue()) ;
334 appletSystemExit();
335 }
336 }
337
338 /**
339 * Split a string based on the presence of a specified separator. Returns
340 * an array of arbitrary length. The end of each element in the array is
341 * indicated by the separator of the end of the string. If there is a
342 * separator immediately before the end of the string, the final element
343 * will be empty. None of the strings will contain the separator. Useful
344 * when separating strings such as "foo/bar/bas" using separator "/".
345 *
346 * @param sep The separator.
347 * @param s The string to split.
348 * @return An array of strings. Each string in the array is determined
349 * by the location of the provided sep in the original string,
350 * s. Whitespace not stripped.
351 */
352 private String [] splitSeparator(String sep, String s) {
353 Vector<String> v = new Vector<>();
354 int tokenStart = 0;
355 int tokenEnd = 0;
356
357 while ((tokenEnd = s.indexOf(sep, tokenStart)) != -1) {
358 v.addElement(s.substring(tokenStart, tokenEnd));
359 tokenStart = tokenEnd+1;
360 }
361 // Add the final element.
362 v.addElement(s.substring(tokenStart));
363
364 String [] retVal = new String[v.size()];
365 v.copyInto(retVal);
366 return retVal;
367 }
368
369 /*
370 * Methods for java.applet.AppletContext
371 */
372
373 private static Map<URL, AudioClip> audioClips = new HashMap<>();
374
375 /**
376 * Get an audio clip.
377 */
378 @Override
379 public AudioClip getAudioClip(URL url) {
380 checkConnect(url);
381 synchronized (audioClips) {
382 AudioClip clip = audioClips.get(url);
383 if (clip == null) {
384 audioClips.put(url, clip = new AppletAudioClip(url));
385 }
386 return clip;
387 }
388 }
389
390 private static Map<URL, AppletImageRef> imageRefs = new HashMap<>();
391
392 /**
393 * Get an image.
394 */
395 @Override
396 public Image getImage(URL url) {
397 return getCachedImage(url);
398 }
399
400 /**
401 * Get an image.
402 */
403 static Image getCachedImage(URL url) {
404 // System.getSecurityManager().checkConnection(url.getHost(), url.getPort());
405 synchronized (imageRefs) {
406 AppletImageRef ref = imageRefs.get(url);
407 if (ref == null) {
408 ref = new AppletImageRef(url);
409 imageRefs.put(url, ref);
410 }
411 return ref.get();
412 }
413 }
414
415 /**
416 * Flush the image cache.
417 */
418 static void flushImageCache() {
419 imageRefs.clear();
420 }
421
422 static Vector<AppletPanel> appletPanels = new Vector<>();
423
424 /**
425 * Get an applet by name.
426 */
427 @Override
428 public Applet getApplet(String name) {
429 AppletSecurity security = (AppletSecurity)System.getSecurityManager();
430 name = name.toLowerCase();
431 SocketPermission panelSp =
432 new SocketPermission(panel.getCodeBase().getHost(), "connect");
433 for (Enumeration<AppletPanel> e = appletPanels.elements() ; e.hasMoreElements() ;) {
434 AppletPanel p = e.nextElement();
435 String param = p.getParameter("name");
436 if (param != null) {
437 param = param.toLowerCase();
438 }
439 if (name.equals(param) &&
440 p.getDocumentBase().equals(panel.getDocumentBase())) {
441
442 SocketPermission sp =
443 new SocketPermission(p.getCodeBase().getHost(), "connect");
444
445 if (panelSp.implies(sp)) {
446 return p.applet;
447 }
448 }
449 }
450 return null;
451 }
452
453 /**
454 * Return an enumeration of all the accessible
455 * applets on this page.
456 */
457 @Override
458 public Enumeration<Applet> getApplets() {
459 AppletSecurity security = (AppletSecurity)System.getSecurityManager();
460 Vector<Applet> v = new Vector<>();
461 SocketPermission panelSp =
462 new SocketPermission(panel.getCodeBase().getHost(), "connect");
463
464 for (Enumeration<AppletPanel> e = appletPanels.elements() ; e.hasMoreElements() ;) {
465 AppletPanel p = e.nextElement();
466 if (p.getDocumentBase().equals(panel.getDocumentBase())) {
467
468 SocketPermission sp =
469 new SocketPermission(p.getCodeBase().getHost(), "connect");
470 if (panelSp.implies(sp)) {
471 v.addElement(p.applet);
472 }
473 }
474 }
475 return v.elements();
476 }
477
478 /**
479 * Ignore.
480 */
481 @Override
482 public void showDocument(URL url) {
483 }
484
485 /**
486 * Ignore.
487 */
488 @Override
489 public void showDocument(URL url, String target) {
490 }
491
492 /**
493 * Show status.
494 */
495 @Override
496 public void showStatus(String status) {
497 label.setText(status);
498 }
499
500 @Override
501 public void setStream(String key, InputStream stream)throws IOException{
502 // We do nothing.
503 }
504
505 @Override
506 public InputStream getStream(String key){
507 // We do nothing.
508 return null;
509 }
510
511 @Override
512 public Iterator<String> getStreamKeys(){
513 // We do nothing.
514 return null;
515 }
516
517 /**
518 * System parameters.
519 */
520 static Hashtable<String, String> systemParam = new Hashtable<>();
521
522 static {
523 systemParam.put("codebase", "codebase");
524 systemParam.put("code", "code");
525 systemParam.put("alt", "alt");
526 systemParam.put("width", "width");
527 systemParam.put("height", "height");
528 systemParam.put("align", "align");
529 systemParam.put("vspace", "vspace");
530 systemParam.put("hspace", "hspace");
531 }
532
533 /**
534 * Print the HTML tag.
535 */
536 public static void printTag(PrintStream out, Hashtable<String, String> atts) {
537 out.print("<applet");
538
539 String v = atts.get("codebase");
540 if (v != null) {
541 out.print(" codebase=\"" + v + "\"");
542 }
543
544 v = atts.get("code");
545 if (v == null) {
546 v = "applet.class";
547 }
548 out.print(" code=\"" + v + "\"");
549 v = atts.get("width");
550 if (v == null) {
551 v = "150";
552 }
553 out.print(" width=" + v);
554
555 v = atts.get("height");
556 if (v == null) {
557 v = "100";
558 }
559 out.print(" height=" + v);
560
561 v = atts.get("name");
562 if (v != null) {
563 out.print(" name=\"" + v + "\"");
564 }
565 out.println(">");
566
567 // A very slow sorting algorithm
568 int len = atts.size();
569 String params[] = new String[len];
570 len = 0;
571 for (Enumeration<String> e = atts.keys() ; e.hasMoreElements() ;) {
572 String param = e.nextElement();
573 int i = 0;
574 for (; i < len ; i++) {
575 if (params[i].compareTo(param) >= 0) {
576 break;
577 }
578 }
579 System.arraycopy(params, i, params, i + 1, len - i);
580 params[i] = param;
581 len++;
582 }
583
584 for (int i = 0 ; i < len ; i++) {
585 String param = params[i];
586 if (systemParam.get(param) == null) {
587 out.println("<param name=" + param +
588 " value=\"" + atts.get(param) + "\">");
589 }
590 }
591 out.println("</applet>");
592 }
593
594 /**
595 * Make sure the atrributes are uptodate.
596 */
597 public void updateAtts() {
598 Dimension d = panel.size();
599 Insets in = panel.insets();
600 panel.atts.put("width",
601 Integer.toString(d.width - (in.left + in.right)));
602 panel.atts.put("height",
603 Integer.toString(d.height - (in.top + in.bottom)));
604 }
605
606 /**
607 * Restart the applet.
608 */
609 void appletRestart() {
610 panel.sendEvent(AppletPanel.APPLET_STOP);
611 panel.sendEvent(AppletPanel.APPLET_DESTROY);
612 panel.sendEvent(AppletPanel.APPLET_INIT);
613 panel.sendEvent(AppletPanel.APPLET_START);
614 }
615
616 /**
617 * Reload the applet.
618 */
619 void appletReload() {
620 panel.sendEvent(AppletPanel.APPLET_STOP);
621 panel.sendEvent(AppletPanel.APPLET_DESTROY);
622 panel.sendEvent(AppletPanel.APPLET_DISPOSE);
623
624 /**
625 * Fixed #4501142: Classloader sharing policy doesn't
626 * take "archive" into account. This will be overridden
627 * by Java Plug-in. [stanleyh]
628 */
629 AppletPanel.flushClassLoader(panel.getClassLoaderCacheKey());
630
631 /*
632 * Make sure we don't have two threads running through the event queue
633 * at the same time.
634 */
635 try {
636 panel.joinAppletThread();
637 panel.release();
638 } catch (InterruptedException e) {
639 return; // abort the reload
640 }
641
642 panel.createAppletThread();
643 panel.sendEvent(AppletPanel.APPLET_LOAD);
644 panel.sendEvent(AppletPanel.APPLET_INIT);
645 panel.sendEvent(AppletPanel.APPLET_START);
646 }
647
648 /**
649 * Save the applet to a well known file (for now) as a serialized object
650 */
651 void appletSave() {
652 AccessController.doPrivileged(new PrivilegedAction<Object>() {
653
654 @Override
655 public Object run() {
656 // XXX: this privileged block should be made smaller
657 // by initializing a private static variable with "user.dir"
658
659 // Applet needs to be stopped for serialization to succeed.
660 // Since panel.sendEvent only queues the event, there is a
661 // chance that the event will not be processed before
662 // serialization begins. However, by sending the event before
663 // FileDialog is created, enough time is given such that this
664 // situation is unlikely to ever occur.
665
666 panel.sendEvent(AppletPanel.APPLET_STOP);
667 FileDialog fd = new FileDialog(AppletViewer.this,
668 amh.getMessage("appletsave.filedialogtitle"),
669 FileDialog.SAVE);
670 // needed for a bug under Solaris...
671 fd.setDirectory(System.getProperty("user.dir"));
672 fd.setFile(defaultSaveFile);
673 fd.show();
674 String fname = fd.getFile();
675 if (fname == null) {
676 // Restart applet if Save is cancelled.
677 panel.sendEvent(AppletPanel.APPLET_START);
678 return null; // cancelled
679 }
680 String dname = fd.getDirectory();
681 File file = new File(dname, fname);
682
683 try (FileOutputStream fos = new FileOutputStream(file);
684 BufferedOutputStream bos = new BufferedOutputStream(fos);
685 ObjectOutputStream os = new ObjectOutputStream(bos)) {
686
687 showStatus(amh.getMessage("appletsave.err1", panel.applet.toString(), file.toString()));
688 os.writeObject(panel.applet);
689 } catch (IOException ex) {
690 System.err.println(amh.getMessage("appletsave.err2", ex));
691 } finally {
692 panel.sendEvent(AppletPanel.APPLET_START);
693 }
694 return null;
695 }
696 });
697 }
698
699 /**
700 * Clone the viewer and the applet.
701 */
702 void appletClone() {
703 Point p = location();
704 updateAtts();
705 @SuppressWarnings("unchecked")
706 Hashtable<String, String> tmp = (Hashtable<String, String>) panel.atts.clone();
707 factory.createAppletViewer(p.x + XDELTA, p.y + YDELTA,
708 panel.documentURL, tmp);
709 }
710
711 /**
712 * Show the applet tag.
713 */
714 void appletTag() {
715 ByteArrayOutputStream out = new ByteArrayOutputStream();
716 updateAtts();
717 printTag(new PrintStream(out), panel.atts);
718 showStatus(amh.getMessage("applettag"));
719
720 Point p = location();
721 new TextFrame(p.x + XDELTA, p.y + YDELTA, amh.getMessage("applettag.textframe"), out.toString());
722 }
723
724 /**
725 * Show the applet info.
726 */
727 void appletInfo() {
728 String str = panel.applet.getAppletInfo();
729 if (str == null) {
730 str = amh.getMessage("appletinfo.applet");
731 }
732 str += "\n\n";
733
734 String atts[][] = panel.applet.getParameterInfo();
735 if (atts != null) {
736 for (int i = 0 ; i < atts.length ; i++) {
737 str += atts[i][0] + " -- " + atts[i][1] + " -- " + atts[i][2] + "\n";
738 }
739 } else {
740 str += amh.getMessage("appletinfo.param");
741 }
742
743 Point p = location();
744 new TextFrame(p.x + XDELTA, p.y + YDELTA, amh.getMessage("appletinfo.textframe"), str);
745
746 }
747
748 /**
749 * Show character encoding type
750 */
751 void appletCharacterEncoding() {
752 showStatus(amh.getMessage("appletencoding", encoding));
753 }
754
755 /**
756 * Edit the applet.
757 */
758 void appletEdit() {
759 }
760
761 /**
762 * Print the applet.
763 */
764 void appletPrint() {
765 PrinterJob pj = PrinterJob.getPrinterJob();
766
767 if (pj != null) {
768 PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
769 if (pj.printDialog(aset)) {
770 pj.setPrintable(this);
771 try {
772 pj.print(aset);
773 statusMsgStream.println(amh.getMessage("appletprint.finish"));
774 } catch (PrinterException e) {
775 statusMsgStream.println(amh.getMessage("appletprint.fail"));
776 }
777 } else {
778 statusMsgStream.println(amh.getMessage("appletprint.cancel"));
779 }
780 } else {
781 statusMsgStream.println(amh.getMessage("appletprint.fail"));
782 }
783 }
784
785 @Override
786 public int print(Graphics graphics, PageFormat pf, int pageIndex) {
787 if (pageIndex > 0) {
788 return Printable.NO_SUCH_PAGE;
789 } else {
790 Graphics2D g2d = (Graphics2D)graphics;
791 g2d.translate(pf.getImageableX(), pf.getImageableY());
792 panel.applet.printAll(graphics);
793 return Printable.PAGE_EXISTS;
794 }
795 }
796
797 /**
798 * Properties.
799 */
800 static AppletProps props;
801 public static synchronized void networkProperties() {
802 if (props == null) {
803 props = new AppletProps();
804 }
805 props.addNotify();
806 props.setVisible(true);
807 }
808
809 /**
810 * Start the applet.
811 */
812 void appletStart() {
813 panel.sendEvent(AppletPanel.APPLET_START);
814 }
815
816 /**
817 * Stop the applet.
818 */
819 void appletStop() {
820 panel.sendEvent(AppletPanel.APPLET_STOP);
821 }
822
823 /**
824 * Shutdown a viewer.
825 * Stop, Destroy, Dispose and Quit a viewer
826 */
827 private void appletShutdown(AppletPanel p) {
828 p.sendEvent(AppletPanel.APPLET_STOP);
829 p.sendEvent(AppletPanel.APPLET_DESTROY);
830 p.sendEvent(AppletPanel.APPLET_DISPOSE);
831 p.sendEvent(AppletPanel.APPLET_QUIT);
832 }
833
834 /**
835 * Close this viewer.
836 * Stop, Destroy, Dispose and Quit an AppletView, then
837 * reclaim resources and exit the program if this is
838 * the last applet.
839 */
840 void appletClose() {
841
842 // The caller thread is event dispatch thread, so
843 // spawn a new thread to avoid blocking the event queue
844 // when calling appletShutdown.
845 //
846 final AppletPanel p = panel;
847
848 new Thread(new Runnable()
849 {
850 @Override
851 public void run()
852 {
853 appletShutdown(p);
854 appletPanels.removeElement(p);
855 dispose();
856
857 if (countApplets() == 0) {
858 appletSystemExit();
859 }
860 }
861 }).start();
862 }
863
864 /**
865 * Exit the program.
866 * Exit from the program (if not stand alone) - do no clean-up
867 */
868 private void appletSystemExit() {
869 if (factory.isStandalone())
870 System.exit(0);
871 }
872
873 /**
874 * Quit all viewers.
875 * Shutdown all viewers properly then
876 * exit from the program (if not stand alone)
877 */
878 protected void appletQuit()
879 {
880 // The caller thread is event dispatch thread, so
881 // spawn a new thread to avoid blocking the event queue
882 // when calling appletShutdown.
883 //
884 new Thread(new Runnable()
885 {
886 @Override
887 public void run()
888 {
889 for (Enumeration<AppletPanel> e = appletPanels.elements() ; e.hasMoreElements() ;) {
890 AppletPanel p = e.nextElement();
891 appletShutdown(p);
892 }
893 appletSystemExit();
894 }
895 }).start();
896 }
897
898 /**
899 * Handle events.
900 */
901 public void processUserAction(ActionEvent evt) {
902
903 String label = ((MenuItem)evt.getSource()).getLabel();
904
905 if (amh.getMessage("menuitem.restart").equals(label)) {
906 appletRestart();
907 return;
908 }
909
910 if (amh.getMessage("menuitem.reload").equals(label)) {
911 appletReload();
912 return;
913 }
914
915 if (amh.getMessage("menuitem.clone").equals(label)) {
916 appletClone();
917 return;
918 }
919
920 if (amh.getMessage("menuitem.stop").equals(label)) {
921 appletStop();
922 return;
923 }
924
925 if (amh.getMessage("menuitem.save").equals(label)) {
926 appletSave();
927 return;
928 }
929
930 if (amh.getMessage("menuitem.start").equals(label)) {
931 appletStart();
932 return;
933 }
934
935 if (amh.getMessage("menuitem.tag").equals(label)) {
936 appletTag();
937 return;
938 }
939
940 if (amh.getMessage("menuitem.info").equals(label)) {
941 appletInfo();
942 return;
943 }
944
945 if (amh.getMessage("menuitem.encoding").equals(label)) {
946 appletCharacterEncoding();
947 return;
948 }
949
950 if (amh.getMessage("menuitem.edit").equals(label)) {
951 appletEdit();
952 return;
953 }
954
955 if (amh.getMessage("menuitem.print").equals(label)) {
956 appletPrint();
957 return;
958 }
959
960 if (amh.getMessage("menuitem.props").equals(label)) {
961 networkProperties();
962 return;
963 }
964
965 if (amh.getMessage("menuitem.close").equals(label)) {
966 appletClose();
967 return;
968 }
969
970 if (factory.isStandalone() && amh.getMessage("menuitem.quit").equals(label)) {
971 appletQuit();
972 return;
973 }
974 //statusMsgStream.println("evt = " + evt);
975 }
976
977 /**
978 * How many applets are running?
979 */
980
981 public static int countApplets() {
982 return appletPanels.size();
983 }
984
985
986 /**
987 * The current character.
988 */
989 static int c;
990
991 /**
992 * Scan spaces.
993 */
994 public static void skipSpace(Reader in) throws IOException {
995 while ((c >= 0) &&
996 ((c == ' ') || (c == '\t') || (c == '\n') || (c == '\r'))) {
997 c = in.read();
998 }
999 }
1000
1001 /**
1002 * Scan identifier
1003 */
1004 public static String scanIdentifier(Reader in) throws IOException {
1005 StringBuilder sb = new StringBuilder();
1006 while (true) {
1007 if (((c >= 'a') && (c <= 'z')) ||
1008 ((c >= 'A') && (c <= 'Z')) ||
1009 ((c >= '0') && (c <= '9')) || (c == '_')) {
1010 sb.append((char) c);
1011 c = in.read();
1012 } else {
1013 return sb.toString();
1014 }
1015 }
1016 }
1017
1018 /**
1019 * Scan tag
1020 */
1021 public static Hashtable<String, String> scanTag(Reader in) throws IOException {
1022 Hashtable<String, String> atts = new Hashtable<>();
1023 skipSpace(in);
1024 while (c >= 0 && c != '>') {
1025 String att = scanIdentifier(in);
1026 String val = "";
1027 skipSpace(in);
1028 if (c == '=') {
1029 int quote = -1;
1030 c = in.read();
1031 skipSpace(in);
1032 if ((c == '\'') || (c == '\"')) {
1033 quote = c;
1034 c = in.read();
1035 }
1036 StringBuilder sb = new StringBuilder();
1037 while ((c > 0) &&
1038 (((quote < 0) && (c != ' ') && (c != '\t') &&
1039 (c != '\n') && (c != '\r') && (c != '>'))
1040 || ((quote >= 0) && (c != quote)))) {
1041 sb.append((char) c);
1042 c = in.read();
1043 }
1044 if (c == quote) {
1045 c = in.read();
1046 }
1047 skipSpace(in);
1048 val = sb.toString();
1049 }
1050 //statusMsgStream.println("PUT " + att + " = '" + val + "'");
1051 if (! val.equals("")) {
1052 atts.put(att.toLowerCase(java.util.Locale.ENGLISH), val);
1053 }
1054 while (true) {
1055 if ((c == '>') || (c < 0) ||
1056 ((c >= 'a') && (c <= 'z')) ||
1057 ((c >= 'A') && (c <= 'Z')) ||
1058 ((c >= '0') && (c <= '9')) || (c == '_'))
1059 break;
1060 c = in.read();
1061 }
1062 //skipSpace(in);
1063 }
1064 return atts;
1065 }
1066
1067 /* values used for placement of AppletViewer's frames */
1068 private static int x = 0;
1069 private static int y = 0;
1070 private static final int XDELTA = 30;
1071 private static final int YDELTA = XDELTA;
1072
1073 static String encoding = null;
1074
1075 static private Reader makeReader(InputStream is) {
1076 if (encoding != null) {
1077 try {
1078 return new BufferedReader(new InputStreamReader(is, encoding));
1079 } catch (IOException x) { }
1080 }
1081 InputStreamReader r = new InputStreamReader(is);
1082 encoding = r.getEncoding();
1083 return new BufferedReader(r);
1084 }
1085
1086 /**
1087 * Scan an html file for <applet> tags
1088 */
1089 public static void parse(URL url, String enc) throws IOException {
1090 encoding = enc;
1091 parse(url, System.out, new StdAppletViewerFactory());
1092 }
1093
1094 public static void parse(URL url) throws IOException {
1095 parse(url, System.out, new StdAppletViewerFactory());
1096 }
1097
1098 public static void parse(URL url, PrintStream statusMsgStream,
1099 AppletViewerFactory factory) throws IOException {
1100 // <OBJECT> <EMBED> tag flags
1101 boolean isAppletTag = false;
1102 boolean isObjectTag = false;
1103 boolean isEmbedTag = false;
1104
1105 // warning messages
1106 String requiresNameWarning = amh.getMessage("parse.warning.requiresname");
1107 String paramOutsideWarning = amh.getMessage("parse.warning.paramoutside");
1108 String appletRequiresCodeWarning = amh.getMessage("parse.warning.applet.requirescode");
1109 String appletRequiresHeightWarning = amh.getMessage("parse.warning.applet.requiresheight");
1110 String appletRequiresWidthWarning = amh.getMessage("parse.warning.applet.requireswidth");
1111 String objectRequiresCodeWarning = amh.getMessage("parse.warning.object.requirescode");
1112 String objectRequiresHeightWarning = amh.getMessage("parse.warning.object.requiresheight");
1113 String objectRequiresWidthWarning = amh.getMessage("parse.warning.object.requireswidth");
1114 String embedRequiresCodeWarning = amh.getMessage("parse.warning.embed.requirescode");
1115 String embedRequiresHeightWarning = amh.getMessage("parse.warning.embed.requiresheight");
1116 String embedRequiresWidthWarning = amh.getMessage("parse.warning.embed.requireswidth");
1117 String appNotLongerSupportedWarning = amh.getMessage("parse.warning.appnotLongersupported");
1118
1119 java.net.URLConnection conn = url.openConnection();
1120 Reader in = makeReader(conn.getInputStream());
1121 /* The original URL may have been redirected - this
1122 * sets it to whatever URL/codebase we ended up getting
1123 */
1124 url = conn.getURL();
1125
1126 int ydisp = 1;
1127 Hashtable<String, String> atts = null;
1128
1129 while(true) {
1130 c = in.read();
1131 if (c == -1)
1132 break;
1133
1134 if (c == '<') {
1135 c = in.read();
1136 if (c == '/') {
1137 c = in.read();
1138 String nm = scanIdentifier(in);
1139 if (nm.equalsIgnoreCase("applet") ||
1140 nm.equalsIgnoreCase("object") ||
1141 nm.equalsIgnoreCase("embed")) {
1142
1143 // We can't test for a code tag until </OBJECT>
1144 // because it is a parameter, not an attribute.
1145 if(isObjectTag) {
1146 if (atts.get("code") == null && atts.get("object") == null) {
1147 statusMsgStream.println(objectRequiresCodeWarning);
1148 atts = null;
1149 }
1150 }
1151
1152 if (atts != null) {
1153 // XXX 5/18 In general this code just simply
1154 // shouldn't be part of parsing. It's presence
1155 // causes things to be a little too much of a
1156 // hack.
1157 factory.createAppletViewer(x, y, url, atts);
1158 x += XDELTA;
1159 y += YDELTA;
1160 // make sure we don't go too far!
1161 Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
1162 if ((x > d.width - 300) || (y > d.height - 300)) {
1163 x = 0;
1164 y = 2 * ydisp * YDELTA;
1165 ydisp++;
1166 }
1167 }
1168 atts = null;
1169 isAppletTag = false;
1170 isObjectTag = false;
1171 isEmbedTag = false;
1172 }
1173 }
1174 else {
1175 String nm = scanIdentifier(in);
1176 if (nm.equalsIgnoreCase("param")) {
1177 Hashtable<String, String> t = scanTag(in);
1178 String att = t.get("name");
1179 if (att == null) {
1180 statusMsgStream.println(requiresNameWarning);
1181 } else {
1182 String val = t.get("value");
1183 if (val == null) {
1184 statusMsgStream.println(requiresNameWarning);
1185 } else if (atts != null) {
1186 atts.put(att.toLowerCase(), val);
1187 } else {
1188 statusMsgStream.println(paramOutsideWarning);
1189 }
1190 }
1191 }
1192 else if (nm.equalsIgnoreCase("applet")) {
1193 isAppletTag = true;
1194 atts = scanTag(in);
1195 if (atts.get("code") == null && atts.get("object") == null) {
1196 statusMsgStream.println(appletRequiresCodeWarning);
1197 atts = null;
1198 } else if (atts.get("width") == null) {
1199 statusMsgStream.println(appletRequiresWidthWarning);
1200 atts = null;
1201 } else if (atts.get("height") == null) {
1202 statusMsgStream.println(appletRequiresHeightWarning);
1203 atts = null;
1204 }
1205 }
1206 else if (nm.equalsIgnoreCase("object")) {
1207 isObjectTag = true;
1208 atts = scanTag(in);
1209 // The <OBJECT> attribute codebase isn't what
1210 // we want. If its defined, remove it.
1211 if(atts.get("codebase") != null) {
1212 atts.remove("codebase");
1213 }
1214
1215 if (atts.get("width") == null) {
1216 statusMsgStream.println(objectRequiresWidthWarning);
1217 atts = null;
1218 } else if (atts.get("height") == null) {
1219 statusMsgStream.println(objectRequiresHeightWarning);
1220 atts = null;
1221 }
1222 }
1223 else if (nm.equalsIgnoreCase("embed")) {
1224 isEmbedTag = true;
1225 atts = scanTag(in);
1226
1227 if (atts.get("code") == null && atts.get("object") == null) {
1228 statusMsgStream.println(embedRequiresCodeWarning);
1229 atts = null;
1230 } else if (atts.get("width") == null) {
1231 statusMsgStream.println(embedRequiresWidthWarning);
1232 atts = null;
1233 } else if (atts.get("height") == null) {
1234 statusMsgStream.println(embedRequiresHeightWarning);
1235 atts = null;
1236 }
1237 }
1238 else if (nm.equalsIgnoreCase("app")) {
1239 statusMsgStream.println(appNotLongerSupportedWarning);
1240 Hashtable<String, String> atts2 = scanTag(in);
1241 nm = atts2.get("class");
1242 if (nm != null) {
1243 atts2.remove("class");
1244 atts2.put("code", nm + ".class");
1245 }
1246 nm = atts2.get("src");
1247 if (nm != null) {
1248 atts2.remove("src");
1249 atts2.put("codebase", nm);
1250 }
1251 if (atts2.get("width") == null) {
1252 atts2.put("width", "100");
1253 }
1254 if (atts2.get("height") == null) {
1255 atts2.put("height", "100");
1256 }
1257 printTag(statusMsgStream, atts2);
1258 statusMsgStream.println();
1259 }
1260 }
1261 }
1262 }
1263 in.close();
1264 }
1265
1266 /**
1267 * Old main entry point.
1268 *
1269 * @deprecated
1270 */
1271 @Deprecated
1272 public static void main(String argv[]) {
1273 // re-route everything to the new main entry point
1274 Main.main(argv);
1275 }
1276
1277 private static AppletMessageHandler amh = new AppletMessageHandler("appletviewer");
1278
1279 private static void checkConnect(URL url)
1280 {
1281 SecurityManager security = System.getSecurityManager();
1282 if (security != null) {
1283 try {
1284 java.security.Permission perm =
1285 url.openConnection().getPermission();
1286 if (perm != null)
1287 security.checkPermission(perm);
1288 else
1289 security.checkConnect(url.getHost(), url.getPort());
1290 } catch (java.io.IOException ioe) {
1291 security.checkConnect(url.getHost(), url.getPort());
1292 }
1293 }
1294 }
1295 }