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 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 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 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 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 = (AudioClip)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 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 = (AppletImageRef)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 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 e = appletPanels.elements() ; e.hasMoreElements() ;) {
434 AppletPanel p = (AppletPanel)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 getApplets() {
459 AppletSecurity security = (AppletSecurity)System.getSecurityManager();
460 Vector v = new Vector();
461 SocketPermission panelSp =
462 new SocketPermission(panel.getCodeBase().getHost(), "connect");
463
464 for (Enumeration e = appletPanels.elements() ; e.hasMoreElements() ;) {
465 AppletPanel p = (AppletPanel)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 getStreamKeys(){
513 // We do nothing.
514 return null;
515 }
516
517 /**
518 * System parameters.
519 */
520 static Hashtable 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 atts) {
537 out.print("<applet");
538
539 String v = (String)atts.get("codebase");
540 if (v != null) {
541 out.print(" codebase=\"" + v + "\"");
542 }
543
544 v = (String)atts.get("code");
545 if (v == null) {
546 v = "applet.class";
547 }
548 out.print(" code=\"" + v + "\"");
549 v = (String)atts.get("width");
550 if (v == null) {
551 v = "150";
552 }
553 out.print(" width=" + v);
554
555 v = (String)atts.get("height");
556 if (v == null) {
557 v = "100";
558 }
559 out.print(" height=" + v);
560
561 v = (String)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 e = atts.keys() ; e.hasMoreElements() ;) {
572 String param = (String)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() {
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 factory.createAppletViewer(p.x + XDELTA, p.y + YDELTA,
706 panel.documentURL, (Hashtable)panel.atts.clone());
707 }
708
709 /**
710 * Show the applet tag.
711 */
712 void appletTag() {
713 ByteArrayOutputStream out = new ByteArrayOutputStream();
714 updateAtts();
715 printTag(new PrintStream(out), panel.atts);
716 showStatus(amh.getMessage("applettag"));
717
718 Point p = location();
719 new TextFrame(p.x + XDELTA, p.y + YDELTA, amh.getMessage("applettag.textframe"), out.toString());
720 }
721
722 /**
723 * Show the applet info.
724 */
725 void appletInfo() {
726 String str = panel.applet.getAppletInfo();
727 if (str == null) {
728 str = amh.getMessage("appletinfo.applet");
729 }
730 str += "\n\n";
731
732 String atts[][] = panel.applet.getParameterInfo();
733 if (atts != null) {
734 for (int i = 0 ; i < atts.length ; i++) {
735 str += atts[i][0] + " -- " + atts[i][1] + " -- " + atts[i][2] + "\n";
736 }
737 } else {
738 str += amh.getMessage("appletinfo.param");
739 }
740
741 Point p = location();
742 new TextFrame(p.x + XDELTA, p.y + YDELTA, amh.getMessage("appletinfo.textframe"), str);
743
744 }
745
746 /**
747 * Show character encoding type
748 */
749 void appletCharacterEncoding() {
750 showStatus(amh.getMessage("appletencoding", encoding));
751 }
752
753 /**
754 * Edit the applet.
755 */
756 void appletEdit() {
757 }
758
759 /**
760 * Print the applet.
761 */
762 void appletPrint() {
763 PrinterJob pj = PrinterJob.getPrinterJob();
764
765 if (pj != null) {
766 PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
767 if (pj.printDialog(aset)) {
768 pj.setPrintable(this);
769 try {
770 pj.print(aset);
771 statusMsgStream.println(amh.getMessage("appletprint.finish"));
772 } catch (PrinterException e) {
773 statusMsgStream.println(amh.getMessage("appletprint.fail"));
774 }
775 } else {
776 statusMsgStream.println(amh.getMessage("appletprint.cancel"));
777 }
778 } else {
779 statusMsgStream.println(amh.getMessage("appletprint.fail"));
780 }
781 }
782
783 @Override
784 public int print(Graphics graphics, PageFormat pf, int pageIndex) {
785 if (pageIndex > 0) {
786 return Printable.NO_SUCH_PAGE;
787 } else {
788 Graphics2D g2d = (Graphics2D)graphics;
789 g2d.translate(pf.getImageableX(), pf.getImageableY());
790 panel.applet.printAll(graphics);
791 return Printable.PAGE_EXISTS;
792 }
793 }
794
795 /**
796 * Properties.
797 */
798 static AppletProps props;
799 public static synchronized void networkProperties() {
800 if (props == null) {
801 props = new AppletProps();
802 }
803 props.addNotify();
804 props.setVisible(true);
805 }
806
807 /**
808 * Start the applet.
809 */
810 void appletStart() {
811 panel.sendEvent(AppletPanel.APPLET_START);
812 }
813
814 /**
815 * Stop the applet.
816 */
817 void appletStop() {
818 panel.sendEvent(AppletPanel.APPLET_STOP);
819 }
820
821 /**
822 * Shutdown a viewer.
823 * Stop, Destroy, Dispose and Quit a viewer
824 */
825 private void appletShutdown(AppletPanel p) {
826 p.sendEvent(AppletPanel.APPLET_STOP);
827 p.sendEvent(AppletPanel.APPLET_DESTROY);
828 p.sendEvent(AppletPanel.APPLET_DISPOSE);
829 p.sendEvent(AppletPanel.APPLET_QUIT);
830 }
831
832 /**
833 * Close this viewer.
834 * Stop, Destroy, Dispose and Quit an AppletView, then
835 * reclaim resources and exit the program if this is
836 * the last applet.
837 */
838 void appletClose() {
839
840 // The caller thread is event dispatch thread, so
841 // spawn a new thread to avoid blocking the event queue
842 // when calling appletShutdown.
843 //
844 final AppletPanel p = panel;
845
846 new Thread(new Runnable()
847 {
848 @Override
849 public void run()
850 {
851 appletShutdown(p);
852 appletPanels.removeElement(p);
853 dispose();
854
855 if (countApplets() == 0) {
856 appletSystemExit();
857 }
858 }
859 }).start();
860 }
861
862 /**
863 * Exit the program.
864 * Exit from the program (if not stand alone) - do no clean-up
865 */
866 private void appletSystemExit() {
867 if (factory.isStandalone())
868 System.exit(0);
869 }
870
871 /**
872 * Quit all viewers.
873 * Shutdown all viewers properly then
874 * exit from the program (if not stand alone)
875 */
876 protected void appletQuit()
877 {
878 // The caller thread is event dispatch thread, so
879 // spawn a new thread to avoid blocking the event queue
880 // when calling appletShutdown.
881 //
882 new Thread(new Runnable()
883 {
884 @Override
885 public void run()
886 {
887 for (Enumeration e = appletPanels.elements() ; e.hasMoreElements() ;) {
888 AppletPanel p = (AppletPanel)e.nextElement();
889 appletShutdown(p);
890 }
891 appletSystemExit();
892 }
893 }).start();
894 }
895
896 /**
897 * Handle events.
898 */
899 public void processUserAction(ActionEvent evt) {
900
901 String label = ((MenuItem)evt.getSource()).getLabel();
902
903 if (amh.getMessage("menuitem.restart").equals(label)) {
904 appletRestart();
905 return;
906 }
907
908 if (amh.getMessage("menuitem.reload").equals(label)) {
909 appletReload();
910 return;
911 }
912
913 if (amh.getMessage("menuitem.clone").equals(label)) {
914 appletClone();
915 return;
916 }
917
918 if (amh.getMessage("menuitem.stop").equals(label)) {
919 appletStop();
920 return;
921 }
922
923 if (amh.getMessage("menuitem.save").equals(label)) {
924 appletSave();
925 return;
926 }
927
928 if (amh.getMessage("menuitem.start").equals(label)) {
929 appletStart();
930 return;
931 }
932
933 if (amh.getMessage("menuitem.tag").equals(label)) {
934 appletTag();
935 return;
936 }
937
938 if (amh.getMessage("menuitem.info").equals(label)) {
939 appletInfo();
940 return;
941 }
942
943 if (amh.getMessage("menuitem.encoding").equals(label)) {
944 appletCharacterEncoding();
945 return;
946 }
947
948 if (amh.getMessage("menuitem.edit").equals(label)) {
949 appletEdit();
950 return;
951 }
952
953 if (amh.getMessage("menuitem.print").equals(label)) {
954 appletPrint();
955 return;
956 }
957
958 if (amh.getMessage("menuitem.props").equals(label)) {
959 networkProperties();
960 return;
961 }
962
963 if (amh.getMessage("menuitem.close").equals(label)) {
964 appletClose();
965 return;
966 }
967
968 if (factory.isStandalone() && amh.getMessage("menuitem.quit").equals(label)) {
969 appletQuit();
970 return;
971 }
972 //statusMsgStream.println("evt = " + evt);
973 }
974
975 /**
976 * How many applets are running?
977 */
978
979 public static int countApplets() {
980 return appletPanels.size();
981 }
982
983
984 /**
985 * The current character.
986 */
987 static int c;
988
989 /**
990 * Scan spaces.
991 */
992 public static void skipSpace(Reader in) throws IOException {
993 while ((c >= 0) &&
994 ((c == ' ') || (c == '\t') || (c == '\n') || (c == '\r'))) {
995 c = in.read();
996 }
997 }
998
999 /**
1000 * Scan identifier
1001 */
1002 public static String scanIdentifier(Reader in) throws IOException {
1003 StringBuilder sb = new StringBuilder();
1004 while (true) {
1005 if (((c >= 'a') && (c <= 'z')) ||
1006 ((c >= 'A') && (c <= 'Z')) ||
1007 ((c >= '0') && (c <= '9')) || (c == '_')) {
1008 sb.append((char) c);
1009 c = in.read();
1010 } else {
1011 return sb.toString();
1012 }
1013 }
1014 }
1015
1016 /**
1017 * Scan tag
1018 */
1019 public static Hashtable scanTag(Reader in) throws IOException {
1020 Hashtable atts = new Hashtable();
1021 skipSpace(in);
1022 while (c >= 0 && c != '>') {
1023 String att = scanIdentifier(in);
1024 String val = "";
1025 skipSpace(in);
1026 if (c == '=') {
1027 int quote = -1;
1028 c = in.read();
1029 skipSpace(in);
1030 if ((c == '\'') || (c == '\"')) {
1031 quote = c;
1032 c = in.read();
1033 }
1034 StringBuilder sb = new StringBuilder();
1035 while ((c > 0) &&
1036 (((quote < 0) && (c != ' ') && (c != '\t') &&
1037 (c != '\n') && (c != '\r') && (c != '>'))
1038 || ((quote >= 0) && (c != quote)))) {
1039 sb.append((char) c);
1040 c = in.read();
1041 }
1042 if (c == quote) {
1043 c = in.read();
1044 }
1045 skipSpace(in);
1046 val = sb.toString();
1047 }
1048 //statusMsgStream.println("PUT " + att + " = '" + val + "'");
1049 if (! val.equals("")) {
1050 atts.put(att.toLowerCase(java.util.Locale.ENGLISH), val);
1051 }
1052 while (true) {
1053 if ((c == '>') || (c < 0) ||
1054 ((c >= 'a') && (c <= 'z')) ||
1055 ((c >= 'A') && (c <= 'Z')) ||
1056 ((c >= '0') && (c <= '9')) || (c == '_'))
1057 break;
1058 c = in.read();
1059 }
1060 //skipSpace(in);
1061 }
1062 return atts;
1063 }
1064
1065 /* values used for placement of AppletViewer's frames */
1066 private static int x = 0;
1067 private static int y = 0;
1068 private static final int XDELTA = 30;
1069 private static final int YDELTA = XDELTA;
1070
1071 static String encoding = null;
1072
1073 static private Reader makeReader(InputStream is) {
1074 if (encoding != null) {
1075 try {
1076 return new BufferedReader(new InputStreamReader(is, encoding));
1077 } catch (IOException x) { }
1078 }
1079 InputStreamReader r = new InputStreamReader(is);
1080 encoding = r.getEncoding();
1081 return new BufferedReader(r);
1082 }
1083
1084 /**
1085 * Scan an html file for <applet> tags
1086 */
1087 public static void parse(URL url, String enc) throws IOException {
1088 encoding = enc;
1089 parse(url, System.out, new StdAppletViewerFactory());
1090 }
1091
1092 public static void parse(URL url) throws IOException {
1093 parse(url, System.out, new StdAppletViewerFactory());
1094 }
1095
1096 public static void parse(URL url, PrintStream statusMsgStream,
1097 AppletViewerFactory factory) throws IOException {
1098 // <OBJECT> <EMBED> tag flags
1099 boolean isAppletTag = false;
1100 boolean isObjectTag = false;
1101 boolean isEmbedTag = false;
1102
1103 // warning messages
1104 String requiresNameWarning = amh.getMessage("parse.warning.requiresname");
1105 String paramOutsideWarning = amh.getMessage("parse.warning.paramoutside");
1106 String appletRequiresCodeWarning = amh.getMessage("parse.warning.applet.requirescode");
1107 String appletRequiresHeightWarning = amh.getMessage("parse.warning.applet.requiresheight");
1108 String appletRequiresWidthWarning = amh.getMessage("parse.warning.applet.requireswidth");
1109 String objectRequiresCodeWarning = amh.getMessage("parse.warning.object.requirescode");
1110 String objectRequiresHeightWarning = amh.getMessage("parse.warning.object.requiresheight");
1111 String objectRequiresWidthWarning = amh.getMessage("parse.warning.object.requireswidth");
1112 String embedRequiresCodeWarning = amh.getMessage("parse.warning.embed.requirescode");
1113 String embedRequiresHeightWarning = amh.getMessage("parse.warning.embed.requiresheight");
1114 String embedRequiresWidthWarning = amh.getMessage("parse.warning.embed.requireswidth");
1115 String appNotLongerSupportedWarning = amh.getMessage("parse.warning.appnotLongersupported");
1116
1117 java.net.URLConnection conn = url.openConnection();
1118 Reader in = makeReader(conn.getInputStream());
1119 /* The original URL may have been redirected - this
1120 * sets it to whatever URL/codebase we ended up getting
1121 */
1122 url = conn.getURL();
1123
1124 int ydisp = 1;
1125 Hashtable atts = null;
1126
1127 while(true) {
1128 c = in.read();
1129 if (c == -1)
1130 break;
1131
1132 if (c == '<') {
1133 c = in.read();
1134 if (c == '/') {
1135 c = in.read();
1136 String nm = scanIdentifier(in);
1137 if (nm.equalsIgnoreCase("applet") ||
1138 nm.equalsIgnoreCase("object") ||
1139 nm.equalsIgnoreCase("embed")) {
1140
1141 // We can't test for a code tag until </OBJECT>
1142 // because it is a parameter, not an attribute.
1143 if(isObjectTag) {
1144 if (atts.get("code") == null && atts.get("object") == null) {
1145 statusMsgStream.println(objectRequiresCodeWarning);
1146 atts = null;
1147 }
1148 }
1149
1150 if (atts != null) {
1151 // XXX 5/18 In general this code just simply
1152 // shouldn't be part of parsing. It's presence
1153 // causes things to be a little too much of a
1154 // hack.
1155 factory.createAppletViewer(x, y, url, atts);
1156 x += XDELTA;
1157 y += YDELTA;
1158 // make sure we don't go too far!
1159 Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
1160 if ((x > d.width - 300) || (y > d.height - 300)) {
1161 x = 0;
1162 y = 2 * ydisp * YDELTA;
1163 ydisp++;
1164 }
1165 }
1166 atts = null;
1167 isAppletTag = false;
1168 isObjectTag = false;
1169 isEmbedTag = false;
1170 }
1171 }
1172 else {
1173 String nm = scanIdentifier(in);
1174 if (nm.equalsIgnoreCase("param")) {
1175 Hashtable t = scanTag(in);
1176 String att = (String)t.get("name");
1177 if (att == null) {
1178 statusMsgStream.println(requiresNameWarning);
1179 } else {
1180 String val = (String)t.get("value");
1181 if (val == null) {
1182 statusMsgStream.println(requiresNameWarning);
1183 } else if (atts != null) {
1184 atts.put(att.toLowerCase(), val);
1185 } else {
1186 statusMsgStream.println(paramOutsideWarning);
1187 }
1188 }
1189 }
1190 else if (nm.equalsIgnoreCase("applet")) {
1191 isAppletTag = true;
1192 atts = scanTag(in);
1193 if (atts.get("code") == null && atts.get("object") == null) {
1194 statusMsgStream.println(appletRequiresCodeWarning);
1195 atts = null;
1196 } else if (atts.get("width") == null) {
1197 statusMsgStream.println(appletRequiresWidthWarning);
1198 atts = null;
1199 } else if (atts.get("height") == null) {
1200 statusMsgStream.println(appletRequiresHeightWarning);
1201 atts = null;
1202 }
1203 }
1204 else if (nm.equalsIgnoreCase("object")) {
1205 isObjectTag = true;
1206 atts = scanTag(in);
1207 // The <OBJECT> attribute codebase isn't what
1208 // we want. If its defined, remove it.
1209 if(atts.get("codebase") != null) {
1210 atts.remove("codebase");
1211 }
1212
1213 if (atts.get("width") == null) {
1214 statusMsgStream.println(objectRequiresWidthWarning);
1215 atts = null;
1216 } else if (atts.get("height") == null) {
1217 statusMsgStream.println(objectRequiresHeightWarning);
1218 atts = null;
1219 }
1220 }
1221 else if (nm.equalsIgnoreCase("embed")) {
1222 isEmbedTag = true;
1223 atts = scanTag(in);
1224
1225 if (atts.get("code") == null && atts.get("object") == null) {
1226 statusMsgStream.println(embedRequiresCodeWarning);
1227 atts = null;
1228 } else if (atts.get("width") == null) {
1229 statusMsgStream.println(embedRequiresWidthWarning);
1230 atts = null;
1231 } else if (atts.get("height") == null) {
1232 statusMsgStream.println(embedRequiresHeightWarning);
1233 atts = null;
1234 }
1235 }
1236 else if (nm.equalsIgnoreCase("app")) {
1237 statusMsgStream.println(appNotLongerSupportedWarning);
1238 Hashtable atts2 = scanTag(in);
1239 nm = (String)atts2.get("class");
1240 if (nm != null) {
1241 atts2.remove("class");
1242 atts2.put("code", nm + ".class");
1243 }
1244 nm = (String)atts2.get("src");
1245 if (nm != null) {
1246 atts2.remove("src");
1247 atts2.put("codebase", nm);
1248 }
1249 if (atts2.get("width") == null) {
1250 atts2.put("width", "100");
1251 }
1252 if (atts2.get("height") == null) {
1253 atts2.put("height", "100");
1254 }
1255 printTag(statusMsgStream, atts2);
1256 statusMsgStream.println();
1257 }
1258 }
1259 }
1260 }
1261 in.close();
1262 }
1263
1264 /**
1265 * Old main entry point.
1266 *
1267 * @deprecated
1268 */
1269 @Deprecated
1270 public static void main(String argv[]) {
1271 // re-route everything to the new main entry point
1272 Main.main(argv);
1273 }
1274
1275 private static AppletMessageHandler amh = new AppletMessageHandler("appletviewer");
1276
1277 private static void checkConnect(URL url)
1278 {
1279 SecurityManager security = System.getSecurityManager();
1280 if (security != null) {
1281 try {
1282 java.security.Permission perm =
1283 url.openConnection().getPermission();
1284 if (perm != null)
1285 security.checkPermission(perm);
1286 else
1287 security.checkConnect(url.getHost(), url.getPort());
1288 } catch (java.io.IOException ioe) {
1289 security.checkConnect(url.getHost(), url.getPort());
1290 }
1291 }
1292 }
1293 }