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1
18 package org.apache.batik.bridge;
19
20 import java.io.IOException  ;
21 import java.io.InputStreamReader ;
22 import java.io.Reader ;
23 import java.io.StringReader ;
24 import java.net.MalformedURLException ;
25 import java.net.URL ;
26 import java.util.HashSet ;
27 import java.util.Iterator ;
28 import java.util.List ;
29 import java.util.Set ;
30 import java.util.jar.Manifest ;
31
32 import org.apache.batik.dom.svg.XMLBaseSupport;
33 import org.apache.batik.dom.util.XLinkSupport;
34 import org.apache.batik.script.Interpreter;
35 import org.apache.batik.script.InterpreterException;
36 import org.apache.batik.script.ScriptHandler;
37 import org.apache.batik.util.ParsedURL;
38 import org.apache.batik.util.SVGConstants;
39 import org.w3c.dom.Document ;
40 import org.w3c.dom.Element ;
41 import org.w3c.dom.Node ;
42 import org.w3c.dom.NodeList ;
43 import org.w3c.dom.events.DocumentEvent ;
44 import org.w3c.dom.events.Event ;
45 import org.w3c.dom.events.EventListener ;
46 import org.w3c.dom.events.EventTarget ;
47 import org.w3c.dom.svg.SVGDocument;
48 import org.w3c.dom.svg.SVGSVGElement;
49 import org.w3c.dom.svg.EventListenerInitializer;
50
51
57 public class BaseScriptingEnvironment {
58
66 public static final String INLINE_SCRIPT_DESCRIPTION
67 = "BaseScriptingEnvironment.constant.inline.script.description";
68
69
77 public static final String EVENT_SCRIPT_DESCRIPTION
78 = "BaseScriptingEnvironment.constant.event.script.description";
79
80
83 public static boolean isDynamicDocument(BridgeContext ctx, Document doc) {
84 Element elt = doc.getDocumentElement();
85 if ((elt != null) &&
86 SVGConstants.SVG_NAMESPACE_URI.equals(elt.getNamespaceURI())) {
87 if (elt.getAttributeNS
88 (null, SVGConstants.SVG_ONABORT_ATTRIBUTE).length() > 0) {
89 return true;
90 }
91 if (elt.getAttributeNS
92 (null, SVGConstants.SVG_ONERROR_ATTRIBUTE).length() > 0) {
93 return true;
94 }
95 if (elt.getAttributeNS
96 (null, SVGConstants.SVG_ONRESIZE_ATTRIBUTE).length() > 0) {
97 return true;
98 }
99 if (elt.getAttributeNS
100 (null, SVGConstants.SVG_ONUNLOAD_ATTRIBUTE).length() > 0) {
101 return true;
102 }
103 if (elt.getAttributeNS
104 (null, SVGConstants.SVG_ONSCROLL_ATTRIBUTE).length() > 0) {
105 return true;
106 }
107 if (elt.getAttributeNS
108 (null, SVGConstants.SVG_ONZOOM_ATTRIBUTE).length() > 0) {
109 return true;
110 }
111 return isDynamicElement(ctx, doc.getDocumentElement());
112 }
113 return false;
114 }
115
116 public static boolean isDynamicElement(BridgeContext ctx, Element elt) {
117 List bridgeExtensions = ctx.getBridgeExtensions(elt.getOwnerDocument());
118 return isDynamicElement(elt, ctx, bridgeExtensions);
119 }
120
121
124 public static boolean isDynamicElement
125 (Element elt, BridgeContext ctx, List bridgeExtensions) {
126 Iterator i = bridgeExtensions.iterator();
127 while (i.hasNext()) {
128 BridgeExtension bridgeExtension = (BridgeExtension) i.next();
129 if (bridgeExtension.isDynamicElement(elt)) {
130 return true;
131 }
132 }
133 if (SVGConstants.SVG_NAMESPACE_URI.equals(elt.getNamespaceURI())) {
134 if (elt.getAttributeNS
135 (null, SVGConstants.SVG_ONKEYUP_ATTRIBUTE).length() > 0) {
136 return true;
137 }
138 if (elt.getAttributeNS
139 (null, SVGConstants.SVG_ONKEYDOWN_ATTRIBUTE).length() > 0) {
140 return true;
141 }
142 if (elt.getAttributeNS
143 (null, SVGConstants.SVG_ONKEYPRESS_ATTRIBUTE).length() > 0) {
144 return true;
145 }
146 if (elt.getAttributeNS
147 (null, SVGConstants.SVG_ONLOAD_ATTRIBUTE).length() > 0) {
148 return true;
149 }
150 if (elt.getAttributeNS
151 (null, SVGConstants.SVG_ONERROR_ATTRIBUTE).length() > 0) {
152 return true;
153 }
154 if (elt.getAttributeNS
155 (null, SVGConstants.SVG_ONACTIVATE_ATTRIBUTE).length() > 0) {
156 return true;
157 }
158 if (elt.getAttributeNS
159 (null, SVGConstants.SVG_ONCLICK_ATTRIBUTE).length() > 0) {
160 return true;
161 }
162 if (elt.getAttributeNS
163 (null, SVGConstants.SVG_ONFOCUSIN_ATTRIBUTE).length() > 0) {
164 return true;
165 }
166 if (elt.getAttributeNS
167 (null, SVGConstants.SVG_ONFOCUSOUT_ATTRIBUTE).length() > 0) {
168 return true;
169 }
170 if (elt.getAttributeNS
171 (null, SVGConstants.SVG_ONMOUSEDOWN_ATTRIBUTE).length() > 0) {
172 return true;
173 }
174 if (elt.getAttributeNS
175 (null, SVGConstants.SVG_ONMOUSEMOVE_ATTRIBUTE).length() > 0) {
176 return true;
177 }
178 if (elt.getAttributeNS
179 (null, SVGConstants.SVG_ONMOUSEOUT_ATTRIBUTE).length() > 0) {
180 return true;
181 }
182 if (elt.getAttributeNS
183 (null, SVGConstants.SVG_ONMOUSEOVER_ATTRIBUTE).length() > 0) {
184 return true;
185 }
186 if (elt.getAttributeNS
187 (null, SVGConstants.SVG_ONMOUSEUP_ATTRIBUTE).length() > 0) {
188 return true;
189 }
190 }
191
192 for (Node n = elt.getFirstChild();
193 n != null;
194 n = n.getNextSibling()) {
195 if (n.getNodeType() == Node.ELEMENT_NODE) {
196 if (isDynamicElement(ctx, (Element )n)) {
197 return true;
198 }
199 }
200 }
201 return false;
202 }
203
204
205 protected final static String EVENT_NAME = "event";
206 protected final static String ALTERNATE_EVENT_NAME = "evt";
207
208
211 protected BridgeContext bridgeContext;
212
213
216 protected UserAgent userAgent;
217
218
221 protected Document document;
222
223
226 protected ParsedURL docPURL;
227
228 protected Set languages = new HashSet ();
229
230
233 protected Interpreter interpreter;
234
235
239 public BaseScriptingEnvironment(BridgeContext ctx) {
240 bridgeContext = ctx;
241 document = ctx.getDocument();
242 docPURL = new ParsedURL(((SVGDocument)document).getURL());
243 userAgent = bridgeContext.getUserAgent();
244 }
245
246
249 public org.apache.batik.script.Window createWindow
250 (Interpreter interp, String lang) {
251 return new Window(interp, lang);
252 }
253
254
257 public org.apache.batik.script.Window createWindow() {
258 return createWindow(null, null);
259 }
260
261
264 public Interpreter getInterpreter() {
265 if (interpreter != null)
266 return interpreter;
267
268 SVGSVGElement root = (SVGSVGElement)document.getDocumentElement();
269 String lang = root.getContentScriptType();
270 return getInterpreter(lang);
271 }
272
273 public Interpreter getInterpreter(String lang) {
274 interpreter = bridgeContext.getInterpreter(lang);
275 if (interpreter == null) {
276 if (languages.contains(lang)) {
277 return null;
279 }
280
281 languages.add(lang);
283 return null;
284 }
285
286 if (!languages.contains(lang)) {
287 languages.add(lang);
288 initializeEnvironment(interpreter, lang);
289 }
290 return interpreter;
291 }
292
293
296 public void initializeEnvironment(Interpreter interp, String lang) {
297 interp.bindObject("window", createWindow(interp, lang));
298 }
299
300
303 public void loadScripts() {
304 org.apache.batik.script.Window window = null;
305
306 NodeList scripts = document.getElementsByTagNameNS
307 (SVGConstants.SVG_NAMESPACE_URI, SVGConstants.SVG_SCRIPT_TAG);
308 int len = scripts.getLength();
309
310 if (len == 0) {
311 return;
312 }
313
314 for (int i = 0; i < len; i++) {
315 Element script = (Element )scripts.item(i);
316 String type = script.getAttributeNS
317 (null, SVGConstants.SVG_TYPE_ATTRIBUTE);
318
319 if (type.length() == 0) {
320 type = SVGConstants.SVG_SCRIPT_TYPE_DEFAULT_VALUE;
321 }
322
323 if (type.equals(SVGConstants.SVG_SCRIPT_TYPE_JAVA)) {
327 try {
328 String href = XLinkSupport.getXLinkHref(script);
329 ParsedURL purl = new ParsedURL
330 (XMLBaseSupport.getCascadedXMLBase(script), href);
331
332 checkCompatibleScriptURL(type, purl);
333
334 DocumentJarClassLoader cll;
335 URL docURL = null;
336 try {
337 docURL = new URL (docPURL.toString());
338 } catch (MalformedURLException mue) {
339
340 }
341 cll = new DocumentJarClassLoader
342 (new URL (purl.toString()), docURL);
343
344 URL url = cll.findResource("META-INF/MANIFEST.MF");
346 if (url == null) {
347 continue;
348 }
349 Manifest man = new Manifest (url.openStream());
350
351 String sh;
352
353 sh = man.getMainAttributes().getValue("Script-Handler");
354 if (sh != null) {
355 ScriptHandler h;
357 h = (ScriptHandler)cll.loadClass(sh).newInstance();
358
359 if (window == null) {
360 window = createWindow();
361 }
362
363 h.run(document, window);
364 }
365
366 sh = man.getMainAttributes().getValue("SVG-Handler-Class");
367 if (sh != null) {
368 EventListenerInitializer initializer;
370 initializer =
371 (EventListenerInitializer)cll.loadClass(sh).newInstance();
372
373 if (window == null) {
374 window = createWindow();
375 }
376
377 initializer.initializeEventListeners((SVGDocument)document);
378 }
379 } catch (Exception e) {
380 if (userAgent != null) {
381 userAgent.displayError(e);
382 }
383 }
384 continue;
385 }
386
387 Interpreter interpreter = getInterpreter(type);
391 if (interpreter == null)
392 continue;
394
395 try {
396 String href = XLinkSupport.getXLinkHref(script);
397 String desc = null;
398 Reader reader;
399
400 if (href.length() > 0) {
401 desc = href;
402
403 ParsedURL purl = new ParsedURL
405 (XMLBaseSupport.getCascadedXMLBase(script), href);
406
407 checkCompatibleScriptURL(type, purl);
408 reader = new InputStreamReader (purl.openStream());
409 } else {
410 checkCompatibleScriptURL(type, docPURL);
411 DocumentLoader dl = bridgeContext.getDocumentLoader();
412 Element e = script;
413 SVGDocument d = (SVGDocument)e.getOwnerDocument();
414 int line = dl.getLineNumber(script);
415 desc = Messages.formatMessage
416 (INLINE_SCRIPT_DESCRIPTION,
417 new Object [] {d.getURL(),
418 "<"+script.getNodeName()+">",
419 new Integer (line)});
420 Node n = script.getFirstChild();
422 if (n != null) {
423 StringBuffer sb = new StringBuffer ();
424 while (n != null) {
425 if (n.getNodeType() == Node.CDATA_SECTION_NODE
426 || n.getNodeType() == Node.TEXT_NODE)
427 sb.append(n.getNodeValue());
428 n = n.getNextSibling();
429 }
430 reader = new StringReader (sb.toString());
431 } else {
432 continue;
433 }
434 }
435
436 interpreter.evaluate(reader, desc);
437
438 } catch (IOException e) {
439 if (userAgent != null) {
440 userAgent.displayError(e);
441 }
442 return;
443 } catch (InterpreterException e) {
444 System.err.println("InterpExcept: " + e);
445 handleInterpreterException(e);
446 return;
447 } catch (SecurityException e) {
448 if (userAgent != null) {
449 userAgent.displayError(e);
450 }
451 }
452 }
453 }
454
455
460 protected void checkCompatibleScriptURL(String scriptType,
461 ParsedURL scriptPURL){
462 userAgent.checkLoadScript(scriptType, scriptPURL, docPURL);
463 }
464
465
468 public void dispatchSVGLoadEvent() {
469 SVGSVGElement root = (SVGSVGElement)document.getDocumentElement();
470 String lang = root.getContentScriptType();
471 dispatchSVGLoad(root, true, lang);
472 }
473
474
477 protected void dispatchSVGLoad(Element elt,
478 boolean checkCanRun,
479 String lang) {
480 for (Node n = elt.getFirstChild();
481 n != null;
482 n = n.getNextSibling()) {
483 if (n.getNodeType() == Node.ELEMENT_NODE) {
484 dispatchSVGLoad((Element )n, checkCanRun, lang);
485 }
486 }
487
488 Event ev;
489 DocumentEvent de = (DocumentEvent )elt.getOwnerDocument();
490 ev = de.createEvent("SVGEvents");
491 ev.initEvent("SVGLoad", false, false);
492 EventTarget t = (EventTarget )elt;
493
494 final String s =
495 elt.getAttributeNS(null, SVGConstants.SVG_ONLOAD_ATTRIBUTE);
496 if (s.length() == 0) {
497 t.dispatchEvent(ev);
500 return;
501 }
502
503 final Interpreter interp = getInterpreter();
504 if (interp == null) {
505 t.dispatchEvent(ev);
508 return;
509 }
510
511 if (checkCanRun) {
512 checkCompatibleScriptURL(lang, docPURL);
514 checkCanRun = false; }
516
517 DocumentLoader dl = bridgeContext.getDocumentLoader();
518 SVGDocument d = (SVGDocument)elt.getOwnerDocument();
519 int line = dl.getLineNumber(elt);
520 final String desc = Messages.formatMessage
521 (EVENT_SCRIPT_DESCRIPTION,
522 new Object [] {d.getURL(),
523 SVGConstants.SVG_ONLOAD_ATTRIBUTE,
524 new Integer (line)});
525
526 EventListener l = new EventListener () {
527 public void handleEvent(Event evt) {
528 try {
529 interp.bindObject(EVENT_NAME, evt);
530 interp.bindObject(ALTERNATE_EVENT_NAME, evt);
531 interp.evaluate(new StringReader (s), desc);
532 } catch (IOException io) {
533 } catch (InterpreterException e) {
534 handleInterpreterException(e);
535 }
536 }
537 };
538 t.addEventListener("SVGLoad", l, false);
539 t.dispatchEvent(ev);
540 t.removeEventListener("SVGLoad", l, false);
541 }
542
543
546 protected void dispatchSVGZoomEvent() {
547 dispatchSVGDocEvent("SVGZoom");
548 }
549
550
553 protected void dispatchSVGScrollEvent() {
554 dispatchSVGDocEvent("SVGScroll");
555 }
556
557
560 protected void dispatchSVGResizeEvent() {
561 dispatchSVGDocEvent("SVGResize");
562 }
563
564 protected void dispatchSVGDocEvent(String eventType) {
565 SVGSVGElement root =
566 (SVGSVGElement)document.getDocumentElement();
567 EventTarget t = root;
569
570 DocumentEvent de = (DocumentEvent )document;
571 Event ev = de.createEvent("SVGEvents");
572 ev.initEvent(eventType, false, false);
573 t.dispatchEvent(ev);
574 }
575
576
579 protected void handleInterpreterException(InterpreterException ie) {
580 if (userAgent != null) {
581 Exception ex = ie.getException();
582 userAgent.displayError((ex == null) ? ie : ex);
583 }
584 }
585
586
589 protected void handleSecurityException(SecurityException se) {
590 if (userAgent != null) {
591 userAgent.displayError(se);
592 }
593 }
594
595
598 protected class Window implements org.apache.batik.script.Window {
599
600
603 protected Interpreter interpreter;
604
605
608 protected String language;
609
610
613 public Window(Interpreter interp, String lang) {
614 interpreter = interp;
615 language = lang;
616 }
617
618
622 public Object setInterval(final String script, long interval) {
623 return null;
624 }
625
626
630 public Object setInterval(final Runnable r, long interval) {
631 return null;
632 }
633
634
638 public void clearInterval(Object interval) {
639 }
640
641
645 public Object setTimeout(final String script, long timeout) {
646 return null;
647 }
648
649
653 public Object setTimeout(final Runnable r, long timeout) {
654 return null;
655 }
656
657
661 public void clearTimeout(Object timeout) {
662 }
663
664
670 public Node parseXML(String text, Document doc) {
671 return null;
672 }
673
674
679 public void getURL(String uri, org.apache.batik.script.Window.URLResponseHandler h) {
680 getURL(uri, h, "UTF8");
681 }
682
683
689 public void getURL(String uri,
690 org.apache.batik.script.Window.URLResponseHandler h,
691 String enc) {
692 }
693
694 public void postURL(String uri, String content,
695 org.apache.batik.script.Window.URLResponseHandler h) {
696 postURL(uri, content, h, "text/plain", null);
697 }
698
699 public void postURL(String uri, String content,
700 org.apache.batik.script.Window.URLResponseHandler h,
701 String mimeType) {
702 postURL(uri, content, h, mimeType, null);
703 }
704
705 public void postURL(String uri,
706 String content,
707 org.apache.batik.script.Window.URLResponseHandler h,
708 String mimeType,
709 String fEnc) {
710 }
711
712
713
714
717 public void alert(String message) {
718 }
719
720
723 public boolean confirm(String message) {
724 return false;
725 }
726
727
730 public String prompt(String message) {
731 return null;
732 }
733
734
737 public String prompt(String message, String defVal) {
738 return null;
739 }
740
741
744 public BridgeContext getBridgeContext() {
745 return bridgeContext;
746 }
747
748
751 public Interpreter getInterpreter() {
752 return interpreter;
753 }
754
755 }
756 }
757 |
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