1/* 2 * Copyright 2005 Joe Walker 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17/** 18 * Declare an object to which we can add real functions. 19 */ 20if (dwr == null) var dwr = {}; 21if (dwr.engine == null) dwr.engine = {}; 22if (DWREngine == null) var DWREngine = dwr.engine; 23 24/** 25 * Set an alternative error handler from the default alert box. 26 * @see getahead.org/dwr/browser/engine/errors 27 */ 28dwr.engine.setErrorHandler = function(handler) { 29 dwr.engine._errorHandler = handler; 30}; 31 32/** 33 * Set an alternative warning handler from the default alert box. 34 * @see getahead.org/dwr/browser/engine/errors 35 */ 36dwr.engine.setWarningHandler = function(handler) { 37 dwr.engine._warningHandler = handler; 38}; 39 40/** 41 * Setter for the text/html handler - what happens if a DWR request gets an HTML 42 * reply rather than the expected Javascript. Often due to login timeout 43 */ 44dwr.engine.setTextHtmlHandler = function(handler) { 45 dwr.engine._textHtmlHandler = handler; 46}; 47 48/** 49 * Set a default timeout value for all calls. 0 (the default) turns timeouts off. 50 * @see getahead.org/dwr/browser/engine/errors 51 */ 52dwr.engine.setTimeout = function(timeout) { 53 dwr.engine._timeout = timeout; 54}; 55 56/** 57 * The Pre-Hook is called before any DWR remoting is done. 58 * @see getahead.org/dwr/browser/engine/hooks 59 */ 60dwr.engine.setPreHook = function(handler) { 61 dwr.engine._preHook = handler; 62}; 63 64/** 65 * The Post-Hook is called after any DWR remoting is done. 66 * @see getahead.org/dwr/browser/engine/hooks 67 */ 68dwr.engine.setPostHook = function(handler) { 69 dwr.engine._postHook = handler; 70}; 71 72/** 73 * Custom headers for all DWR calls 74 * @see getahead.org/dwr/???? 75 */ 76dwr.engine.setHeaders = function(headers) { 77 dwr.engine._headers = headers; 78}; 79 80/** 81 * Custom parameters for all DWR calls 82 * @see getahead.org/dwr/???? 83 */ 84dwr.engine.setParameters = function(parameters) { 85 dwr.engine._parameters = parameters; 86}; 87 88/** XHR remoting type constant. See dwr.engine.set[Rpc|Poll]Type() */ 89dwr.engine.XMLHttpRequest = 1; 90 91/** XHR remoting type constant. See dwr.engine.set[Rpc|Poll]Type() */ 92dwr.engine.IFrame = 2; 93 94/** XHR remoting type constant. See dwr.engine.setRpcType() */ 95dwr.engine.ScriptTag = 3; 96 97/** 98 * Set the preferred remoting type. 99 * @param newType One of dwr.engine.XMLHttpRequest or dwr.engine.IFrame or dwr.engine.ScriptTag 100 * @see getahead.org/dwr/browser/engine/options 101 */ 102dwr.engine.setRpcType = function(newType) { 103 if (newType != dwr.engine.XMLHttpRequest && newType != dwr.engine.IFrame && newType != dwr.engine.ScriptTag) { 104 dwr.engine._handleError(null, { name:"dwr.engine.invalidRpcType", message:"RpcType must be one of dwr.engine.XMLHttpRequest or dwr.engine.IFrame or dwr.engine.ScriptTag" }); 105 return; 106 } 107 dwr.engine._rpcType = newType; 108}; 109 110/** 111 * Which HTTP method do we use to send results? Must be one of "GET" or "POST". 112 * @see getahead.org/dwr/browser/engine/options 113 */ 114dwr.engine.setHttpMethod = function(httpMethod) { 115 if (httpMethod != "GET" && httpMethod != "POST") { 116 dwr.engine._handleError(null, { name:"dwr.engine.invalidHttpMethod", message:"Remoting method must be one of GET or POST" }); 117 return; 118 } 119 dwr.engine._httpMethod = httpMethod; 120}; 121 122/** 123 * Ensure that remote calls happen in the order in which they were sent? (Default: false) 124 * @see getahead.org/dwr/browser/engine/ordering 125 */ 126dwr.engine.setOrdered = function(ordered) { 127 dwr.engine._ordered = ordered; 128}; 129 130/** 131 * Do we ask the XHR object to be asynchronous? (Default: true) 132 * @see getahead.org/dwr/browser/engine/options 133 */ 134dwr.engine.setAsync = function(async) { 135 dwr.engine._async = async; 136}; 137 138/** 139 * Does DWR poll the server for updates? (Default: false) 140 * @see getahead.org/dwr/browser/engine/options 141 */ 142dwr.engine.setActiveReverseAjax = function(activeReverseAjax) { 143 if (activeReverseAjax) { 144 // Bail if we are already started 145 if (dwr.engine._activeReverseAjax) return; 146 dwr.engine._activeReverseAjax = true; 147 dwr.engine._poll(); 148 } 149 else { 150 // Can we cancel an existing request? 151 if (dwr.engine._activeReverseAjax && dwr.engine._pollReq) dwr.engine._pollReq.abort(); 152 dwr.engine._activeReverseAjax = false;
153 } 154 // TODO: in iframe mode, if we start, stop, start then the second start may 155 // well kick off a second iframe while the first is still about to return 156 // we should cope with this but we don't 157}; 158 159/** 160 * The default message handler. 161 * @see getahead.org/dwr/browser/engine/errors 162 */ 163dwr.engine.defaultErrorHandler = function(message, ex) { 164 dwr.engine._debug("Error: " + ex.name + ", " + ex.message, true); 165 if (message == null || message == "") alert("A server error has occured."); 166 // Ignore NS_ERROR_NOT_AVAILABLE if Mozilla is being narky 167 else if (message.indexOf("0x80040111") != -1) dwr.engine._debug(message); 168 else alert(message); 169}; 170 171/** 172 * The default warning handler. 173 * @see getahead.org/dwr/browser/engine/errors 174 */ 175dwr.engine.defaultWarningHandler = function(message, ex) { 176 dwr.engine._debug(message); 177}; 178 179/** 180 * For reduced latency you can group several remote calls together using a batch. 181 * @see getahead.org/dwr/browser/engine/batch 182 */ 183dwr.engine.beginBatch = function() { 184 if (dwr.engine._batch) { 185 dwr.engine._handleError(null, { name:"dwr.engine.batchBegun", message:"Batch already begun" }); 186 return; 187 } 188 dwr.engine._batch = dwr.engine._createBatch(); 189}; 190 191/** 192 * Finished grouping a set of remote calls together. Go and execute them all. 193 * @see getahead.org/dwr/browser/engine/batch 194 */ 195dwr.engine.endBatch = function(options) { 196 var batch = dwr.engine._batch; 197 if (batch == null) { 198 dwr.engine._handleError(null, { name:"dwr.engine.batchNotBegun", message:"No batch in progress" }); 199 return; 200 } 201 dwr.engine._batch = null; 202 if (batch.map.callCount == 0) return; 203 204 // The hooks need to be merged carefully to preserve ordering 205 if (options) dwr.engine._mergeBatch(batch, options); 206 207 // In ordered mode, we don't send unless the list of sent items is empty 208 if (dwr.engine._ordered && dwr.engine._batchesLength != 0) { 209 dwr.engine._batchQueue[dwr.engine._batchQueue.length] = batch; 210 } 211 else { 212 dwr.engine._sendData(batch); 213 } 214}; 215 216/** @deprecated */ 217dwr.engine.setPollMethod = function(type) { dwr.engine.setPollType(type); }; 218dwr.engine.setMethod = function(type) { dwr.engine.setRpcType(type); }; 219dwr.engine.setVerb = function(verb) { dwr.engine.setHttpMethod(verb); }; 220dwr.engine.setPollType = function() { dwr.engine._debug("Manually setting the Poll Type is not supported"); }; 221 222//============================================================================== 223// Only private stuff below here 224//============================================================================== 225 226/** The original page id sent from the server */ 227dwr.engine._origScriptSessionId = "9C1E4CCAA5DA5F23DC811DC6A0150192"; 228 229/** The session cookie name */ 230dwr.engine._sessionCookieName = "JSESSIONID"; // JSESSIONID 231 232/** Is GET enabled for the benefit of Safari? */ 233dwr.engine._allowGetForSafariButMakeForgeryEasier = "false"; 234 235/** The script prefix to strip in the case of scriptTagProtection. */ 236dwr.engine._scriptTagProtection = "throw 'allowScriptTagRemoting is false.';"; 237 238/** The default path to the DWR servlet */ 239dwr.engine._defaultPath = "/borsa/dwr"; 240 241/** Do we use XHR for reverse ajax because we are not streaming? */ 242dwr.engine._pollWithXhr = "false"; 243 244/** The read page id that we calculate */ 245dwr.engine._scriptSessionId = null; 246 247/** The function that we use to fetch/calculate a session id */ 248dwr.engine._getScriptSessionId = function() { 249 if (dwr.engine._scriptSessionId == null) { 250 dwr.engine._scriptSessionId = dwr.engine._origScriptSessionId + Math.floor(Math.random() * 1000); 251 } 252 return dwr.engine._scriptSessionId; 253}; 254 255/** A function to call if something fails. */ 256dwr.engine._errorHandler = dwr.engine.defaultErrorHandler; 257 258/** For debugging when something unexplained happens. */ 259dwr.engine._warningHandler = dwr.engine.defaultWarningHandler; 260 261/** A function to be called before requests are marshalled. Can be null. */ 262dwr.engine._preHook = null; 263 264/** A function to be called after replies are received. Can be null. */ 265dwr.engine._postHook = null; 266 267/** An map of the batches that we have sent and are awaiting a reply on. */ 268dwr.engine._batches = {}; 269
270/** A count of the number of outstanding batches. Should be == to _batches.length unless prototype has messed things up */ 271dwr.engine._batchesLength = 0; 272 273/** In ordered mode, the array of batches waiting to be sent */ 274dwr.engine._batchQueue = []; 275 276/** What is the default rpc type */ 277dwr.engine._rpcType = dwr.engine.XMLHttpRequest; 278 279/** What is the default remoting method (ie GET or POST) */ 280dwr.engine._httpMethod = "POST"; 281 282/** Do we attempt to ensure that calls happen in the order in which they were sent? */ 283dwr.engine._ordered = false; 284 285/** Do we make the calls async? */ 286dwr.engine._async = true; 287 288/** The current batch (if we are in batch mode) */ 289dwr.engine._batch = null; 290 291/** The global timeout */ 292dwr.engine._timeout = 0; 293 294/** ActiveX objects to use when we want to convert an xml string into a DOM object. */ 295dwr.engine._DOMDocument = ["Msxml2.DOMDocument.6.0", "Msxml2.DOMDocument.5.0", "Msxml2.DOMDocument.4.0", "Msxml2.DOMDocument.3.0", "MSXML2.DOMDocument", "MSXML.DOMDocument", "Microsoft.XMLDOM"]; 296 297/** The ActiveX objects to use when we want to do an XMLHttpRequest call. */ 298dwr.engine._XMLHTTP = ["Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.5.0", "Msxml2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP", "Microsoft.XMLHTTP"]; 299 300/** Are we doing comet or polling? */ 301dwr.engine._activeReverseAjax = false; 302 303/** The iframe that we are using to poll */ 304dwr.engine._outstandingIFrames = []; 305 306/** The xhr object that we are using to poll */ 307dwr.engine._pollReq = null; 308 309/** How many milliseconds between internal comet polls */ 310dwr.engine._pollCometInterval = 200; 311 312/** How many times have we re-tried to poll? */ 313dwr.engine._pollRetries = 0; 314dwr.engine._maxPollRetries = 0; 315 316/** Do we do a document.reload if we get a text/html reply? */ 317dwr.engine._textHtmlHandler = null; 318 319/** If you wish to send custom headers with every request */ 320dwr.engine._headers = null; 321 322/** If you wish to send extra custom request parameters with each request */ 323dwr.engine._parameters = null; 324 325/** Undocumented interceptors - do not use */ 326dwr.engine._postSeperator = "\n"; 327dwr.engine._defaultInterceptor = function(data) { return data; }; 328dwr.engine._urlRewriteHandler = dwr.engine._defaultInterceptor; 329dwr.engine._contentRewriteHandler = dwr.engine._defaultInterceptor; 330dwr.engine._replyRewriteHandler = dwr.engine._defaultInterceptor; 331 332/** Batch ids allow us to know which batch the server is answering */ 333dwr.engine._nextBatchId = 0; 334 335/** A list of the properties that need merging from calls to a batch */ 336dwr.engine._propnames = [ "rpcType", "httpMethod", "async", "timeout", "errorHandler", "warningHandler", "textHtmlHandler" ]; 337 338/** Do we stream, or can be hacked to do so? */ 339dwr.engine._partialResponseNo = 0; 340dwr.engine._partialResponseYes = 1; 341dwr.engine._partialResponseFlush = 2; 342 343/** Is this page in the process of unloading? */ 344dwr.engine._unloading = false; 345 346/** 347 * @private Send a request. Called by the Javascript interface stub 348 * @param path part of URL after the host and before the exec bit without leading or trailing /s 349 * @param scriptName The class to execute 350 * @param methodName The method on said class to execute 351 * @param func The callback function to which any returned data should be passed 352 * if this is null, any returned data will be ignored 353 * @param vararg_params The parameters to pass to the above class 354 */ 355dwr.engine._execute = function(path, scriptName, methodName, vararg_params) { 356 var singleShot = false; 357 if (dwr.engine._batch == null) { 358 dwr.engine.beginBatch(); 359 singleShot = true; 360 } 361 var batch = dwr.engine._batch; 362 // To make them easy to manipulate we copy the arguments into an args array 363 var args = []; 364 for (var i = 0; i < arguments.length - 3; i++) { 365 args[i] = arguments[i + 3]; 366 } 367 // All the paths MUST be to the same servlet 368 if (batch.path == null) { 369 batch.path = path; 370 } 371 else { 372 if (batch.path != path) { 373 dwr.engine._handleError(batch, { name:"dwr.engine.multipleServlets", message:"Can't batch requests to multiple DWR Servlets." }); 374 return; 375 } 376 } 377 // From the other params, work out which is the function (or object with 378 // call meta-data) and which is the call parameters 379 var callData; 380 var lastArg = args[args.length - 1]; 381 if (typeof lastArg == "function" || lastArg == null) callData = { callback:args.pop() }; 382 else callData = args.pop(); 383 384 // Merge from the callData into the batch 385 dwr.engine._mergeBatch(batch, callData); 386 batch.handlers[batch.map.callCount] = { 387 exceptionHandler:callData.exceptionHandler, 388 callback:callData.callback 389 }; 390 391 // Copy to the map the things that need serializing 392 var prefix = "c" + batch.map.callCount + "-"; 393 batch.map[prefix + "scriptName"] = scriptName; 394 batch.map[prefix + "methodName"] = methodName; 395 batch.map[prefix + "id"] = batch.map.callCount; 396 var refctx = []; 397 for (i = 0; i < args.length; i++) { 398 dwr.engine._serializeAll(batch, refctx, args[i], prefix + "param" + i); 399 } 400 401 // Now we have finished remembering the call, we incr the call count 402 batch.map.callCount++; 403 if (singleShot) dwr.engine.endBatch(); 404}; 405 406/** @private Poll the server to see if there is any data waiting */ 407dwr.engine._poll = function() { 408 if (!dwr.engine._activeReverseAjax) return; 409 410 var batch = dwr.engine._createBatch(); 411 batch.map.id = 0; // TODO: Do we need this?? 412 batch.map.callCount = 1; 413 batch.isPoll = true; 414 if (dwr.engine._pollWithXhr == "true") { 415 batch.rpcType = dwr.engine.XMLHttpRequest; 416 batch.map.partialResponse = dwr.engine._partialResponseNo; 417 } 418 else { 419 if (navigator.userAgent.indexOf("Gecko/") != -1) { 420 batch.rpcType = dwr.engine.XMLHttpRequest; 421 batch.map.partialResponse = dwr.engine._partialResponseYes; 422 } 423 else { 424 batch.rpcType = dwr.engine.XMLHttpRequest; 425 batch.map.partialResponse = dwr.engine._partialResponseNo; 426 } 427 } 428 batch.httpMethod = "POST"; 429 batch.async = true; 430 batch.timeout = 0; 431 batch.path = dwr.engine._defaultPath; 432 batch.preHooks = []; 433 batch.postHooks = []; 434 batch.errorHandler = dwr.engine._pollErrorHandler; 435 batch.warningHandler = dwr.engine._pollErrorHandler; 436 batch.handlers[0] = { 437 callback:function(pause) { 438 dwr.engine._pollRetries = 0; 439 setTimeout(dwr.engine._poll, pause); 440 } 441 }; 442 443 // Send the data 444 dwr.engine._sendData(batch); 445 if (batch.rpcType == dwr.engine.XMLHttpRequest && batch.map.partialResponse == dwr.engine._partialResponseYes) { 446 dwr.engine._checkCometPoll(); 447 } 448}; 449 450/** Try to recover from polling errors */ 451dwr.engine._pollErrorHandler = function(msg, ex) { 452 // if anything goes wrong then just silently try again (up to 3x) after 10s 453 dwr.engine._pollRetries++; 454 dwr.engine._debug("Reverse Ajax poll failed (pollRetries=" + dwr.engine._pollRetries + "): " + ex.name + " : " + ex.message); 455 if (dwr.engine._pollRetries < dwr.engine._maxPollRetries) { 456 setTimeout(dwr.engine._poll, 10000); 457 } 458 else { 459 dwr.engine._activeReverseAjax = false;
460 dwr.engine._debug("Giving up."); 461 } 462}; 463 464/** @private Generate a new standard batch */ 465dwr.engine._createBatch = function() { 466 var batch = { 467 map:{ 468 callCount:0, 469 page:window.location.pathname + window.location.search, 470 httpSessionId:dwr.engine._getJSessionId(), 471 scriptSessionId:dwr.engine._getScriptSessionId() 472 }, 473 charsProcessed:0, paramCount:0, 474 parameters:{}, headers:{}, 475 isPoll:false, handlers:{}, preHooks:[], postHooks:[], 476 rpcType:dwr.engine._rpcType, 477 httpMethod:dwr.engine._httpMethod, 478 async:dwr.engine._async, 479 timeout:dwr.engine._timeout, 480 errorHandler:dwr.engine._errorHandler, 481 warningHandler:dwr.engine._warningHandler, 482 textHtmlHandler:dwr.engine._textHtmlHandler 483 }; 484 if (dwr.engine._preHook) batch.preHooks.push(dwr.engine._preHook); 485 if (dwr.engine._postHook) batch.postHooks.push(dwr.engine._postHook); 486 var propname, data; 487 if (dwr.engine._headers) { 488 for (propname in dwr.engine._headers) { 489 data = dwr.engine._headers[propname]; 490 if (typeof data != "function") batch.headers[propname] = data; 491 } 492 } 493 if (dwr.engine._parameters) { 494 for (propname in dwr.engine._parameters) { 495 data = dwr.engine._parameters[propname]; 496 if (typeof data != "function") batch.parameters[propname] = data; 497 } 498 } 499 return batch; 500}; 501 502/** @private Take further options and merge them into */ 503dwr.engine._mergeBatch = function(batch, overrides) { 504 var propname, data; 505 for (var i = 0; i < dwr.engine._propnames.length; i++) { 506 propname = dwr.engine._propnames[i]; 507 if (overrides[propname] != null) batch[propname] = overrides[propname]; 508 } 509 if (overrides.preHook != null) batch.preHooks.unshift(overrides.preHook); 510 if (overrides.postHook != null) batch.postHooks.push(overrides.postHook); 511 if (overrides.headers) { 512 for (propname in overrides.headers) { 513 data = overrides.headers[propname]; 514 if (typeof data != "function") batch.headers[propname] = data; 515 } 516 } 517 if (overrides.parameters) { 518 for (propname in overrides.parameters) { 519 data = overrides.parameters[propname]; 520 if (typeof data != "function") batch.map["p-" + propname] = "" + data; 521 } 522 } 523}; 524 525/** @private What is our session id? */ 526dwr.engine._getJSessionId = function() { 527 var cookies = document.cookie.split(';'); 528 for (var i = 0; i < cookies.length; i++) { 529 var cookie = cookies[i]; 530 while (cookie.charAt(0) == ' ') cookie = cookie.substring(1, cookie.length); 531 if (cookie.indexOf(dwr.engine._sessionCookieName + "=") == 0) { 532 return cookie.substring(dwr.engine._sessionCookieName.length + 1, cookie.length); 533 } 534 } 535 return ""; 536}; 537 538/** @private Check for reverse Ajax activity */ 539dwr.engine._checkCometPoll = function() { 540 for (var i = 0; i < dwr.engine._outstandingIFrames.length; i++) { 541 var text = ""; 542 var iframe = dwr.engine._outstandingIFrames[i]; 543 try { 544 text = dwr.engine._getTextFromCometIFrame(iframe); 545 } 546 catch (ex) { 547 dwr.engine._handleWarning(iframe.batch, ex); 548 } 549 if (text != "") dwr.engine._processCometResponse(text, iframe.batch); 550 } 551 if (dwr.engine._pollReq) { 552 var req = dwr.engine._pollReq; 553 var text = req.responseText; 554 if (text != null) dwr.engine._processCometResponse(text, req.batch); 555 } 556 557 // If the poll resources are still there, come back again 558 if (dwr.engine._outstandingIFrames.length > 0 || dwr.engine._pollReq) { 559 setTimeout(dwr.engine._checkCometPoll, dwr.engine._pollCometInterval); 560 } 561}; 562 563/** @private Extract the whole (executed an all) text from the current iframe */ 564dwr.engine._getTextFromCometIFrame = function(frameEle) { 565 var body = frameEle.contentWindow.document.body; 566 if (body == null) return ""; 567 var text = body.innerHTML; 568 // We need to prevent IE from stripping line feeds 569 if (text.indexOf("<PRE>") == 0 || text.indexOf("<pre>") == 0) { 570 text = text.substring(5, text.length - 7); 571 } 572 return text; 573}; 574 575/** @private Some more text might have come in, test and execute the new stuff */ 576dwr.engine._processCometResponse = function(response, batch) { 577 if (batch.charsProcessed == response.length) return; 578 if (response.length == 0) { 579 batch.charsProcessed = 0; 580 return; 581 } 582 583 var firstStartTag = response.indexOf("//#DWR-START#", batch.charsProcessed); 584 if (firstStartTag == -1) { 585 // dwr.engine._debug("No start tag (search from " + batch.charsProcessed + "). skipping '" + response.substring(batch.charsProcessed) + "'"); 586 batch.charsProcessed = response.length; 587 return; 588 } 589 // if (firstStartTag > 0) { 590 // dwr.engine._debug("Start tag not at start (search from " + batch.charsProcessed + "). skipping '" + response.substring(batch.charsProcessed, firstStartTag) + "'"); 591 // } 592 593 var lastEndTag = response.lastIndexOf("//#DWR-END#"); 594 if (lastEndTag == -1) { 595 // dwr.engine._debug("No end tag. unchanged charsProcessed=" + batch.charsProcessed); 596 return; 597 } 598 599 // Skip the end tag too for next time, remembering CR and LF 600 if (response.charCodeAt(lastEndTag + 11) == 13 && response.charCodeAt(lastEndTag + 12) == 10) { 601 batch.charsProcessed = lastEndTag + 13; 602 } 603 else { 604 batch.charsProcessed = lastEndTag + 11; 605 } 606 607 var exec = response.substring(firstStartTag + 13, lastEndTag); 608 609 dwr.engine._receivedBatch = batch; 610 dwr.engine._eval(exec); 611 dwr.engine._receivedBatch = null; 612}; 613 614/** @private Actually send the block of data in the batch object. */ 615dwr.engine._sendData = function(batch) { 616 batch.map.batchId = dwr.engine._nextBatchId; 617 dwr.engine._nextBatchId++; 618 dwr.engine._batches[batch.map.batchId] = batch; 619 dwr.engine._batchesLength++; 620 batch.completed = false;
621 622 for (var i = 0; i < batch.preHooks.length; i++) { 623 batch.preHooks[i](); 624 } 625 batch.preHooks = null; 626 // Set a timeout 627 if (batch.timeout && batch.timeout != 0) { 628 batch.timeoutId = setTimeout(function() { dwr.engine._abortRequest(batch); }, batch.timeout); 629 } 630 // Get setup for XMLHttpRequest if possible 631 if (batch.rpcType == dwr.engine.XMLHttpRequest) { 632 if (window.XMLHttpRequest) { 633 batch.req = new XMLHttpRequest(); 634 } 635 // IE5 for the mac claims to support window.ActiveXObject, but throws an error when it's used 636 else if (window.ActiveXObject && !(navigator.userAgent.indexOf("Mac") >= 0 && navigator.userAgent.indexOf("MSIE") >= 0)) { 637 batch.req = dwr.engine._newActiveXObject(dwr.engine._XMLHTTP); 638 } 639 } 640 641 var prop, request; 642 if (batch.req) { 643 // Proceed using XMLHttpRequest 644 if (batch.async) { 645 batch.req.onreadystatechange = function() { 646 if (typeof dwr != 'undefined') dwr.engine._stateChange(batch); 647 }; 648 } 649 // If we're polling, record this for monitoring 650 if (batch.isPoll) { 651 dwr.engine._pollReq = batch.req; 652 // In IE XHR is an ActiveX control so you can't augment it like this 653 if (!(document.all && !window.opera)) batch.req.batch = batch; 654 } 655 // Workaround for Safari 1.x POST bug 656 var indexSafari = navigator.userAgent.indexOf("Safari/"); 657 if (indexSafari >= 0) {
658 var version = navigator.userAgent.substring(indexSafari + 7); 659 if (parseInt(version, 10) < 400) { 660 if (dwr.engine._allowGetForSafariButMakeForgeryEasier == "true") batch.httpMethod = "GET"; 661 else dwr.engine._handleWarning(batch, { name:"dwr.engine.oldSafari", message:"Safari GET support disabled. See getahead.org/dwr/server/servlet and allowGetForSafariButMakeForgeryEasier." }); 662 } 663 } 664 batch.mode = batch.isPoll ? dwr.engine._ModePlainPoll : dwr.engine._ModePlainCall; 665 request = dwr.engine._constructRequest(batch); 666 try { 667 batch.req.open(batch.httpMethod, request.url, batch.async); 668 try { 669 for (prop in batch.headers) { 670 var value = batch.headers[prop]; 671 if (typeof value == "string") batch.req.setRequestHeader(prop, value); 672 } 673 if (!batch.headers["Content-Type"]) batch.req.setRequestHeader("Content-Type", "text/plain"); 674 } 675 catch (ex) { 676 dwr.engine._handleWarning(batch, ex); 677 } 678 batch.req.send(request.body); 679 if (!batch.async) dwr.engine._stateChange(batch); 680 } 681 catch (ex) { 682 dwr.engine._handleError(batch, ex); 683 } 684 } 685 else if (batch.rpcType != dwr.engine.ScriptTag) { 686 var idname = batch.isPoll ? "dwr-if-poll-" + batch.map.batchId : "dwr-if-" + batch.map.batchId; 687 // Removed htmlfile implementation. Don't expect it to return before v3 688 batch.div = document.createElement("div"); 689 // Add the div to the document first, otherwise IE 6 will ignore onload handler. 690 document.body.appendChild(batch.div); 691 batch.div.innerHTML = "<iframe src='javascript:void(0)' frameborder='0' style='width:0px;height:0px;border:0;' id='" + idname + "' name='" + idname + "' onload='dwr.engine._iframeLoadingComplete (" + batch.map.batchId + ");'></iframe>"; 692 batch.document = document; 693 batch.iframe = batch.document.getElementById(idname); 694 batch.iframe.batch = batch; 695 batch.mode = batch.isPoll ? dwr.engine._ModeHtmlPoll : dwr.engine._ModeHtmlCall; 696 if (batch.isPoll) dwr.engine._outstandingIFrames.push(batch.iframe); 697 request = dwr.engine._constructRequest(batch); 698 if (batch.httpMethod == "GET") { 699 batch.iframe.setAttribute("src", request.url); 700 } 701 else { 702 batch.form = batch.document.createElement("form"); 703 batch.form.setAttribute("id", "dwr-form"); 704 batch.form.setAttribute("action", request.url); 705 batch.form.setAttribute("style", "display:none;"); 706 batch.form.setAttribute("target", idname); 707 batch.form.target = idname; 708 batch.form.setAttribute("method", batch.httpMethod); 709 for (prop in batch.map) { 710 var value = batch.map[prop]; 711 if (typeof value != "function") { 712 var formInput = batch.document.createElement("input"); 713 formInput.setAttribute("type", "hidden"); 714 formInput.setAttribute("name", prop); 715 formInput.setAttribute("value", value); 716 batch.form.appendChild(formInput); 717 } 718 } 719 batch.document.body.appendChild(batch.form); 720 batch.form.submit(); 721 } 722 } 723 else { 724 batch.httpMethod = "GET"; // There's no such thing as ScriptTag using POST 725 batch.mode = batch.isPoll ? dwr.engine._ModePlainPoll : dwr.engine._ModePlainCall; 726 request = dwr.engine._constructRequest(batch); 727 batch.script = document.createElement("script"); 728 batch.script.id = "dwr-st-" + batch.map["c0-id"]; 729 batch.script.src = request.url; 730 document.body.appendChild(batch.script); 731 } 732}; 733 734dwr.engine._ModePlainCall = "/call/plaincall/"; 735dwr.engine._ModeHtmlCall = "/call/htmlcall/"; 736dwr.engine._ModePlainPoll = "/call/plainpoll/"; 737dwr.engine._ModeHtmlPoll = "/call/htmlpoll/"; 738 739/** @private Work out what the URL should look like */ 740dwr.engine._constructRequest = function(batch) { 741 // A quick string to help people that use web log analysers 742 var request = { url:batch.path + batch.mode, body:null }; 743 if (batch.isPoll == true) { 744 request.url += "ReverseAjax.dwr"; 745 } 746 else if (batch.map.callCount == 1) { 747 request.url += batch.map["c0-scriptName"] + "." + batch.map["c0-methodName"] + ".dwr"; 748 } 749 else { 750 request.url += "Multiple." + batch.map.callCount + ".dwr"; 751 } 752 // Play nice with url re-writing
753 var sessionMatch = location.href.match(/jsessionid=([^?]+)/); 754 if (sessionMatch != null) { 755 request.url += ";jsessionid=" + sessionMatch[1]; 756 } 757 758 var prop; 759 if (batch.httpMethod == "GET") { 760 // Some browsers (Opera/Safari2) seem to fail to convert the callCount value 761 // to a string in the loop below so we do it manually here. 762 batch.map.callCount = "" + batch.map.callCount; 763 request.url += "?"; 764 for (prop in batch.map) { 765 if (typeof batch.map[prop] != "function") { 766 request.url += encodeURIComponent(prop) + "=" + encodeURIComponent(batch.map[prop]) + "&"; 767 } 768 } 769 request.url = request.url.substring(0, request.url.length - 1); 770 } 771 else { 772 // PERFORMANCE: for iframe mode this is thrown away. 773 request.body = ""; 774 if (document.all && !window.opera) { 775 // Use array joining on IE (fastest) 776 var buf = []; 777 for (prop in batch.map) { 778 if (typeof batch.map[prop] != "function") { 779 buf.push(prop + "=" + batch.map[prop] + dwr.engine._postSeperator); 780 } 781 } 782 request.body = buf.join(""); 783 } 784 else { 785 // Use string concat on other browsers (fastest) 786 for (prop in batch.map) { 787 if (typeof batch.map[prop] != "function") { 788 request.body += prop + "=" + batch.map[prop] + dwr.engine._postSeperator; 789 } 790 } 791 } 792 request.body = dwr.engine._contentRewriteHandler(request.body); 793 } 794 request.url = dwr.engine._urlRewriteHandler(request.url); 795 return request; 796}; 797 798/** @private Called by XMLHttpRequest to indicate that something has happened */ 799dwr.engine._stateChange = function(batch) { 800 var toEval; 801 802 if (batch.completed) { 803 dwr.engine._debug("Error: _stateChange() with batch.completed"); 804 return; 805 } 806 807 var req = batch.req; 808 try { 809 if (req.readyState != 4) return; 810 } 811 catch (ex) { 812 dwr.engine._handleWarning(batch, ex); 813 // It's broken - clear up and forget this call 814 dwr.engine._clearUp(batch); 815 return; 816 } 817 818 if (dwr.engine._unloading) { 819 dwr.engine._debug("Ignoring reply from server as page is unloading."); 820 return; 821 } 822 823 try { 824 var reply = req.responseText; 825 reply = dwr.engine._replyRewriteHandler(reply); 826 var status = req.status; // causes Mozilla to except on page moves 827 828 if (reply == null || reply == "") { 829 dwr.engine._handleWarning(batch, { name:"dwr.engine.missingData", message:"No data received from server" }); 830 } 831 else if (status != 200) { 832 dwr.engine._handleError(batch, { name:"dwr.engine.http." + status, message:req.statusText }); 833 } 834 else { 835 var contentType = req.getResponseHeader("Content-Type"); 836 if (!contentType.match(/^text\/plain/) && !contentType.match(/^text\/javascript/)) { 837 if (contentType.match(/^text\/html/) && typeof batch.textHtmlHandler == "function") { 838 batch.textHtmlHandler({ status:status, responseText:reply, contentType:contentType }); 839 } 840 else { 841 dwr.engine._handleWarning(batch, { name:"dwr.engine.invalidMimeType", message:"Invalid content type: '" + contentType + "'" }); 842 } 843 } 844 else { 845 // Comet replies might have already partially executed 846 if (batch.isPoll && batch.map.partialResponse == dwr.engine._partialResponseYes) { 847 dwr.engine._processCometResponse(reply, batch); 848 } 849 else { 850 if (reply.search("//#DWR") == -1) { 851 dwr.engine._handleWarning(batch, { name:"dwr.engine.invalidReply", message:"Invalid reply from server" }); 852 } 853 else { 854 toEval = reply; 855 } 856 } 857 } 858 } 859 } 860 catch (ex) { 861 dwr.engine._handleWarning(batch, ex); 862 } 863 864 dwr.engine._callPostHooks(batch); 865 866 // Outside of the try/catch so errors propogate normally: 867 dwr.engine._receivedBatch = batch; 868 if (toEval != null) toEval = toEval.replace(dwr.engine._scriptTagProtection, ""); 869 dwr.engine._eval(toEval); 870 dwr.engine._receivedBatch = null; 871 dwr.engine._validateBatch(batch); 872 if (!batch.completed) dwr.engine._clearUp(batch); 873}; 874 875/** 876 * @private This function is invoked when a batch reply is received. 877 * It checks that there is a response for every call in the batch. Otherwise, 878 * an error will be signaled (a call without a response indicates that the 879 * server failed to send complete batch response). 880 */ 881dwr.engine._validateBatch = function(batch) { 882 // If some call left unreplied, report an error. 883 if (!batch.completed) { 884 for (var i = 0; i < batch.map.callCount; i++) { 885 if (batch.handlers[i] != null) { 886 dwr.engine._handleWarning(batch, { name:"dwr.engine.incompleteReply", message:"Incomplete reply from server" }); 887 break; 888 } 889 } 890 } 891} 892 893/** @private Called from iframe onload, check batch using batch-id */ 894dwr.engine._iframeLoadingComplete = function(batchId) { 895 // dwr.engine._checkCometPoll(); 896 var batch = dwr.engine._batches[batchId]; 897 if (batch) dwr.engine._validateBatch(batch); 898} 899 900/** @private Called by the server: Execute a callback */ 901dwr.engine._remoteHandleCallback = function(batchId, callId, reply) { 902 var batch = dwr.engine._batches[batchId]; 903 if (batch == null) { 904 dwr.engine._debug("Warning: batch == null in remoteHandleCallback for batchId=" + batchId, true); 905 return; 906 } 907 // Error handlers inside here indicate an error that is nothing to do 908 // with DWR so we handle them differently. 909 try { 910 var handlers = batch.handlers[callId]; 911 batch.handlers[callId] = null; 912 if (!handlers) { 913 dwr.engine._debug("Warning: Missing handlers. callId=" + callId, true); 914 } 915 else if (typeof handlers.callback == "function") handlers.callback(reply); 916 }
917 catch (ex) { 918 dwr.engine._handleError(batch, ex); 919 } 920}; 921 922/** @private Called by the server: Handle an exception for a call */ 923dwr.engine._remoteHandleException = function(batchId, callId, ex) { 924 var batch = dwr.engine._batches[batchId]; 925 if (batch == null) { dwr.engine._debug("Warning: null batch in remoteHandleException", true); return; } 926 var handlers = batch.handlers[callId]; 927 batch.handlers[callId] = null; 928 if (handlers == null) { dwr.engine._debug("Warning: null handlers in remoteHandleException", true); return; } 929 if (ex.message == undefined) ex.message = ""; 930 if (typeof handlers.exceptionHandler == "function") handlers.exceptionHandler(ex.message, ex); 931 else if (typeof batch.errorHandler == "function") batch.errorHandler(ex.message, ex); 932}; 933 934/** @private Called by the server: The whole batch is broken */ 935dwr.engine._remoteHandleBatchException = function(ex, batchId) { 936 var searchBatch = (dwr.engine._receivedBatch == null && batchId != null); 937 if (searchBatch) { 938 dwr.engine._receivedBatch = dwr.engine._batches[batchId]; 939 } 940 if (ex.message == undefined) ex.message = ""; 941 dwr.engine._handleError(dwr.engine._receivedBatch, ex); 942 if (searchBatch) { 943 dwr.engine._receivedBatch = null; 944 dwr.engine._clearUp(dwr.engine._batches[batchId]); 945 } 946}; 947 948/** @private Called by the server: Reverse ajax should not be used */ 949dwr.engine._remotePollCometDisabled = function(ex, batchId) { 950 dwr.engine.setActiveReverseAjax(false); 951 var searchBatch = (dwr.engine._receivedBatch == null && batchId != null); 952 if (searchBatch) { 953 dwr.engine._receivedBatch = dwr.engine._batches[batchId]; 954 } 955 if (ex.message == undefined) ex.message = ""; 956 dwr.engine._handleError(dwr.engine._receivedBatch, ex); 957 if (searchBatch) { 958 dwr.engine._receivedBatch = null; 959 dwr.engine._clearUp(dwr.engine._batches[batchId]); 960 } 961}; 962 963/** @private Called by the server: An IFrame reply is about to start */ 964dwr.engine._remoteBeginIFrameResponse = function(iframe, batchId) { 965 if (iframe != null) dwr.engine._receivedBatch = iframe.batch; 966 dwr.engine._callPostHooks(dwr.engine._receivedBatch); 967}; 968 969/** @private Called by the server: An IFrame reply is just completing */ 970dwr.engine._remoteEndIFrameResponse = function(batchId) { 971 dwr.engine._clearUp(dwr.engine._receivedBatch); 972 dwr.engine._receivedBatch = null; 973}; 974 975/** @private This is a hack to make the context be this window */ 976dwr.engine._eval = function(script) { 977 if (script == null) return null; 978 if (script == "") { dwr.engine._debug("Warning: blank script", true); return null; } 979 // dwr.engine._debug("Exec: [" + script + "]", true); 980 return eval(script); 981}; 982 983/** @private Called as a result of a request timeout */ 984dwr.engine._abortRequest = function(batch) { 985 if (batch && !batch.completed) { 986 dwr.engine._clearUp(batch); 987 if (batch.req) batch.req.abort(); 988 dwr.engine._handleError(batch, { name:"dwr.engine.timeout", message:"Timeout" }); 989 } 990}; 991 992/** @private call all the post hooks for a batch */ 993dwr.engine._callPostHooks = function(batch) { 994 if (batch.postHooks) { 995 for (var i = 0; i < batch.postHooks.length; i++) { 996 batch.postHooks[i](); 997 } 998 batch.postHooks = null; 999 } 1000}; 1001 1002/** @private A call has finished by whatever means and we need to shut it all down. */ 1003dwr.engine._clearUp = function(batch) { 1004 if (!batch) { dwr.engine._debug("Warning: null batch in dwr.engine._clearUp()", true); return; } 1005 if (batch.completed) { dwr.engine._debug("Warning: Double complete", true); return; } 1006 1007 // IFrame tidyup 1008 if (batch.div) batch.div.parentNode.removeChild(batch.div); 1009 if (batch.iframe) { 1010 // If this is a poll frame then stop comet polling 1011 for (var i = 0; i < dwr.engine._outstandingIFrames.length; i++) { 1012 if (dwr.engine._outstandingIFrames[i] == batch.iframe) { 1013 dwr.engine._outstandingIFrames.splice(i, 1); 1014 } 1015 } 1016 batch.iframe.parentNode.removeChild(batch.iframe); 1017 } 1018 if (batch.form) batch.form.parentNode.removeChild(batch.form); 1019 1020 // XHR tidyup: avoid IE handles increase 1021 if (batch.req) { 1022 // If this is a poll frame then stop comet polling 1023 if (batch.req == dwr.engine._pollReq) dwr.engine._pollReq = null; 1024 delete batch.req; 1025 } 1026 1027 // Timeout tidyup 1028 if (batch.timeoutId != null) { 1029 clearTimeout(batch.timeoutId); 1030 delete batch.timeoutId; 1031 } 1032 1033 if (batch.map && (batch.map.batchId || batch.map.batchId == 0)
1033) { 1034 delete dwr.engine._batches[batch.map.batchId]; 1035 dwr.engine._batchesLength--; 1036 } 1037 1038 batch.completed = true; 1039 1040 // If there is anything on the queue waiting to go out, then send it. 1041 // We don't need to check for ordered mode, here because when ordered mode 1042 // gets turned off, we still process *waiting* batches in an ordered way. 1043 if (dwr.engine._batchQueue.length != 0) { 1044 var sendbatch = dwr.engine._batchQueue.shift(); 1045 dwr.engine._sendData(sendbatch); 1046 } 1047}; 1048 1049/** @private Abort any XHRs in progress at page unload (solves zombie socket problems in IE). */ 1050dwr.engine._unloader = function() { 1051 dwr.engine._unloading = true; 1052 1053 // Empty queue of waiting ordered requests 1054 dwr.engine._batchQueue.length = 0; 1055 1056 // Abort any ongoing XHRs and clear their batches 1057 for (var batchId in dwr.engine._batches) { 1058 var batch = dwr.engine._batches[batchId]; 1059 // Only process objects that look like batches (avoid prototype additions!) 1060 if (batch && batch.map) { 1061 if (batch.req) { 1062 batch.req.abort(); 1063 } 1064 dwr.engine._clearUp(batch); 1065 } 1066 } 1067}; 1068// Now register the unload handler 1069if (window.addEventListener) window.addEventListener('unload', dwr.engine._unloader, false); 1070else if (window.attachEvent) window.attachEvent('onunload', dwr.engine._unloader); 1071 1072/** @private Generic error handling routing to save having null checks everywhere */ 1073dwr.engine._handleError = function(batch, ex) { 1074 if (typeof ex == "string") ex = { name:"unknown", message:ex }; 1075 if (ex.message == null) ex.message = ""; 1076 if (ex.name == null) ex.name = "unknown"; 1077 if (batch && typeof batch.errorHandler == "function") batch.errorHandler(ex.message, ex); 1078 else if (dwr.engine._errorHandler) dwr.engine._errorHandler(ex.message, ex); 1079 if (batch) dwr.engine._clearUp(batch); 1080}; 1081 1082/** @private Generic error handling routing to save having null checks everywhere */ 1083dwr.engine._handleWarning = function(batch, ex) { 1084 if (typeof ex == "string") ex = { name:"unknown", message:ex }; 1085 if (ex.message == null) ex.message = ""; 1086 if (ex.name == null) ex.name = "unknown"; 1087 if (batch && typeof batch.warningHandler == "function") batch.warningHandler(ex.message, ex); 1088 else if (dwr.engine._warningHandler) dwr.engine._warningHandler(ex.message, ex); 1089 if (batch) dwr.engine._clearUp(batch); 1090}; 1091 1092/** 1093 * @private Marshall a data item 1094 * @param batch A map of variables to how they have been marshalled 1095 * @param referto An array of already marshalled variables to prevent recurrsion 1096 * @param data The data to be marshalled 1097 * @param name The name of the data being marshalled 1098 */ 1099dwr.engine._serializeAll = function(batch, referto, data, name) { 1100 if (data == null) { 1101 batch.map[name] = "null:null"; 1102 return; 1103 } 1104 1105 switch (typeof data) { 1106 case "boolean": 1107 batch.map[name] = "boolean:" + data; 1108 break; 1109 case "number": 1110 batch.map[name] = "number:" + data; 1111 break; 1112 case "string": 1113 batch.map[name] = "string:" + encodeURIComponent(data); 1114 break; 1115 case "object": 1116 var objstr = Object.prototype.toString.call(data); 1117 if (objstr == "[object String]") batch.map[name] = "String:" + encodeURIComponent(data); 1118 else if (objstr == "[object Boolean]") batch.map[name] = "Boolean:" + data; 1119 else if (objstr == "[object Number]") batch.map[name] = "Number:" + data; 1120 else if (objstr == "[object Date]") batch.map[name] = "Date:" + data.getTime(); 1121 else if (objstr == "[object Array]") batch.map[name] = dwr.engine._serializeArray(batch, referto, data, name); 1122 else batch.map[name] = dwr.engine._serializeObject(batch, referto, data, name); 1123 break; 1124 case "function": 1125 // We just ignore functions. 1126 break; 1127 default: 1128 dwr.engine._handleWarning(null, { name:"dwr.engine.unexpectedType", message:"Unexpected type: " + typeof data + ", attempting default converter." }); 1129 batch.map[name] = "default:" + data; 1130 break; 1131 } 1132}; 1133 1134/** @private Have we already converted this object? */ 1135dwr.engine._lookup = function(referto, data, name) { 1136 var lookup; 1137 // Can't use a map: getahead.org/ajax/javascript-gotchas 1138 for (var i = 0; i < referto.length; i++) { 1139 if (referto[i].data == data) { 1140 lookup = referto[i]; 1141 break; 1142 } 1143 } 1144 if (lookup) return "reference:" + lookup.name; 1145 referto.push({ data:data, name:name }); 1146 return null; 1147}; 1148 1149/** @private Marshall an object */ 1150dwr.engine._serializeObject = function(batch, referto, data, name) { 1151 var ref = dwr.engine._lookup(referto, data, name); 1152 if (ref) return ref; 1153 1154 // This check for an HTML is not complete, but is there a better way? 1155 // Maybe we should add: data.hasChildNodes typeof "function" == true 1156 if (data.nodeName && data.nodeType) { 1157 return dwr.engine._serializeXml(batch, referto, data, name); 1158 } 1159 1160 // treat objects as an associative arrays
1161 var reply = "Object_" + dwr.engine._getObjectClassName(data) + ":{"; 1162 var element; 1163 for (element in data) { 1164 if (typeof data[element] != "function") { 1165 batch.paramCount++; 1166 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1167 dwr.engine._serializeAll(batch, referto, data[element], childName); 1168 1169 reply += encodeURIComponent(element) + ":reference:" + childName + ", "; 1170 } 1171 } 1172 1173 if (reply.substring(reply.length - 2) == ", ") { 1174 reply = reply.substring(0, reply.length - 2); 1175 } 1176 reply += "}"; 1177 1178 return reply; 1179}; 1180 1181/** @private Returns the classname of supplied argument obj */ 1182dwr.engine._errorClasses = { "Error":Error, "EvalError":EvalError, "RangeError":RangeError, "ReferenceError":ReferenceError, "SyntaxError":SyntaxError, "TypeError":TypeError, "URIError":URIError }; 1183dwr.engine._getObjectClassName = function(obj) { 1184 // Try to find the classname by stringifying the object's constructor 1185 // and extract <class> from "function <class>". 1186 if (obj && obj.constructor && obj.constructor.toString) 1187 { 1188 var str = obj.constructor.toString(); 1189 var regexpmatch = str.match(/function\s+(\w+)/); 1190 if (regexpmatch && regexpmatch.length == 2) { 1191 return regexpmatch[1]; 1192 } 1193 } 1194 1195 // Now manually test against the core Error classes, as these in some 1196 // browsers successfully match to the wrong class in the 1197 // Object.toString() test we will do later 1198 if (obj && obj.constructor) { 1199 for (var errorname in dwr.engine._errorClasses) { 1200 if (obj.constructor == dwr.engine._errorClasses[errorname]) return errorname; 1201 } 1202 } 1203 1204 // Try to find the classname by calling Object.toString() on the object 1205 // and extracting <class> from "[object <class>]" 1206 if (obj) { 1207 var str = Object.prototype.toString.call(obj); 1208 var regexpmatch = str.match(/\[object\s+(\w+)/); 1209 if (regexpmatch && regexpmatch.length==2) { 1210 return regexpmatch[1]; 1211 } 1212 } 1213 1214 // Supplied argument was probably not an object, but what is better? 1215 return "Object"; 1216}; 1217 1218/** @private Marshall an object */ 1219dwr.engine._serializeXml = function(batch, referto, data, name) { 1220 var ref = dwr.engine._lookup(referto, data, name); 1221 if (ref) return ref; 1222 1223 var output; 1224 if (window.XMLSerializer) output = new XMLSerializer().serializeToString(data); 1225 else if (data.toXml) output = data.toXml; 1226 else output = data.innerHTML; 1227 1228 return "XML:" + encodeURIComponent(output); 1229}; 1230 1231/** @private Marshall an array */ 1232dwr.engine._serializeArray = function(batch, referto, data, name) { 1233 var ref = dwr.engine._lookup(referto, data, name); 1234 if (ref) return ref; 1235 1236 if (document.all && !window.opera) { 1237 // Use array joining on IE (fastest) 1238 var buf = ["Array:["]; 1239 for (var i = 0; i < data.length; i++) { 1240 if (i != 0) buf.push(","); 1241 batch.paramCount++; 1242 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1243 dwr.engine._serializeAll(batch, referto, data[i], childName); 1244 buf.push("reference:"); 1245 buf.push(childName); 1246 } 1247 buf.push("]"); 1248 reply = buf.join(""); 1249 } 1250 else { 1251 // Use string concat on other browsers (fastest) 1252 var reply = "Array:["; 1253 for (var i = 0; i < data.length; i++) { 1254 if (i != 0) reply += ","; 1255 batch.paramCount++; 1256 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1257 dwr.engine._serializeAll(batch, referto, data[i], childName); 1258 reply += "reference:"; 1259 reply += childName; 1260 } 1261 reply += "]"; 1262 } 1263 1264 return reply; 1265}; 1266 1267/** @private Convert an XML string into a DOM object. */ 1268dwr.engine._unserializeDocument = function(xml) { 1269 var dom; 1270 if (window.DOMParser) { 1271 var parser = new DOMParser(); 1272 dom = parser.parseFromString(xml, "text/xml"); 1273 if (!dom.documentElement || dom.documentElement.tagName == "parsererror") { 1274 var message = dom.documentElement.firstChild.data; 1275 message += "\n" + dom.documentElement.firstChild.nextSibling.firstChild.data; 1276 throw message; 1277 } 1278 return dom; 1279 } 1280 else if (window.ActiveXObject) {
1281 dom = dwr.engine._newActiveXObject(dwr.engine._DOMDocument); 1282 dom.loadXML(xml); // What happens on parse fail with IE? 1283 return dom; 1284 } 1285 else { 1286 var div = document.createElement("div"); 1287 div.innerHTML = xml; 1288 return div; 1289 } 1290}; 1291 1292/** @param axarray An array of strings to attempt to create ActiveX objects from */ 1293dwr.engine._newActiveXObject = function(axarray) { 1294 var returnValue; 1295 for (var i = 0; i < axarray.length; i++) { 1296 try { 1297 returnValue = new ActiveXObject(axarray[i]); 1298 break; 1299 } 1300 catch (ex) { /* ignore */ } 1301 } 1302 return returnValue; 1303}; 1304 1305/** @private Used internally when some message needs to get to the programmer */ 1306dwr.engine._debug = function(message, stacktrace) { 1307 var written = false; 1308 try { 1309 if (window.console) { 1310 if (stacktrace && window.console.trace) window.console.trace(); 1311 window.console.log(message); 1312 written = true; 1313 } 1314 else if (window.opera && window.opera.postError) { 1315 window.opera.postError(message); 1316 written = true; 1317 } 1318 } 1319 catch (ex) { /* ignore */ } 1320 1321 if (!written) { 1322 var debug = document.getElementById("dwr-debug"); 1323 if (debug) { 1324 var contents = message + "<br/>" + debug.innerHTML; 1325 if (contents.length > 2048) contents = contents.substring(0, 2048); 1326 debug.innerHTML = contents; 1327 } 1328 } 1329}; 1330
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.