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 = "F06EEE08B86C956A7BD2D48F091F2168"; 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 = "/SebinaOpac/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 // DM usato per nascondere il loader 392 if (callData.noLoader) { 393 batch.noLoader = callData.noLoader; 394 } 395 396 // Copy to the map the things that need serializing 397 var prefix = "c" + batch.map.callCount + "-"; 398 batch.map[prefix + "scriptName"] = scriptName; 399 batch.map[prefix + "methodName"] = methodName; 400 batch.map[prefix + "id"] = batch.map.callCount; 401 var refctx = []; 402 for (i = 0; i < args.length; i++) { 403 dwr.engine._serializeAll(batch, refctx, args[i], prefix + "param" + i); 404 } 405 406 // Now we have finished remembering the call, we incr the call count 407 batch.map.callCount++; 408 if (singleShot) dwr.engine.endBatch(); 409}; 410 411/** @private Poll the server to see if there is any data waiting */ 412dwr.engine._poll = function() { 413 if (!dwr.engine._activeReverseAjax) return; 414 415 var batch = dwr.engine._createBatch(); 416 batch.map.id = 0; // TODO: Do we need this?? 417 batch.map.callCount = 1; 418 batch.isPoll = true; 419 if (dwr.engine._pollWithXhr == "true") { 420 batch.rpcType = dwr.engine.XMLHttpRequest; 421 batch.map.partialResponse = dwr.engine._partialResponseNo; 422 } 423 else { 424 if (navigator.userAgent.indexOf("Gecko/") != -1) { 425 batch.rpcType = dwr.engine.XMLHttpRequest; 426 batch.map.partialResponse = dwr.engine._partialResponseYes; 427 } 428 else { 429 batch.rpcType = dwr.engine.XMLHttpRequest; 430 batch.map.partialResponse = dwr.engine._partialResponseNo; 431 } 432 } 433 batch.httpMethod = "POST"; 434 batch.async = true; 435 batch.timeout = 0; 436 batch.path = dwr.engine._defaultPath; 437 batch.preHooks = []; 438 batch.postHooks = []; 439 batch.errorHandler = dwr.engine._pollErrorHandler; 440 batch.warningHandler = dwr.engine._pollErrorHandler; 441 batch.handlers[0] = { 442 callback:function(pause) { 443 dwr.engine._pollRetries = 0; 444 setTimeout(dwr.engine._poll, pause); 445 } 446 }; 447 448 // Send the data 449 dwr.engine._sendData(batch); 450 if (batch.rpcType == dwr.engine.XMLHttpRequest && batch.map.partialResponse == dwr.engine._partialResponseYes) { 451 dwr.engine._checkCometPoll(); 452 } 453}; 454 455/** Try to recover from polling errors */ 456dwr.engine._pollErrorHandler = function(msg, ex) { 457 // if anything goes wrong then just silently try again (up to 3x) after 10s 458 dwr.engine._pollRetries++; 459 dwr.engine._debug("Reverse Ajax poll failed (pollRetries=" + dwr.engine._pollRetries + "): " + ex.name + " : " + ex.message); 460 if (dwr.engine._pollRetries < dwr.engine._maxPollRetries) { 461 setTimeout(dwr.engine._poll, 10000); 462 } 463 else { 464 dwr.engine._activeReverseAjax = false;
465 dwr.engine._debug("Giving up."); 466 } 467}; 468 469/** @private Generate a new standard batch */ 470dwr.engine._createBatch = function() { 471 var batch = { 472 map:{ 473 callCount:0, 474 page:window.location.pathname + window.location.search, 475 httpSessionId:dwr.engine._getJSessionId(), 476 scriptSessionId:dwr.engine._getScriptSessionId() 477 }, 478 charsProcessed:0, paramCount:0, 479 parameters:{}, headers:{}, 480 isPoll:false, handlers:{}, preHooks:[], postHooks:[], 481 rpcType:dwr.engine._rpcType, 482 httpMethod:dwr.engine._httpMethod, 483 async:dwr.engine._async, 484 timeout:dwr.engine._timeout, 485 errorHandler:dwr.engine._errorHandler, 486 warningHandler:dwr.engine._warningHandler, 487 textHtmlHandler:dwr.engine._textHtmlHandler 488 }; 489 if (dwr.engine._preHook) batch.preHooks.push(dwr.engine._preHook); 490 if (dwr.engine._postHook) batch.postHooks.push(dwr.engine._postHook); 491 var propname, data; 492 if (dwr.engine._headers) { 493 for (propname in dwr.engine._headers) { 494 data = dwr.engine._headers[propname]; 495 if (typeof data != "function") batch.headers[propname] = data; 496 } 497 } 498 if (dwr.engine._parameters) { 499 for (propname in dwr.engine._parameters) { 500 data = dwr.engine._parameters[propname]; 501 if (typeof data != "function") batch.parameters[propname] = data; 502 } 503 } 504 return batch; 505}; 506 507/** @private Take further options and merge them into */ 508dwr.engine._mergeBatch = function(batch, overrides) { 509 var propname, data; 510 for (var i = 0; i < dwr.engine._propnames.length; i++) { 511 propname = dwr.engine._propnames[i]; 512 if (overrides[propname] != null) batch[propname] = overrides[propname]; 513 } 514 if (overrides.preHook != null) batch.preHooks.unshift(overrides.preHook); 515 if (overrides.postHook != null) batch.postHooks.push(overrides.postHook); 516 if (overrides.headers) { 517 for (propname in overrides.headers) { 518 data = overrides.headers[propname]; 519 if (typeof data != "function") batch.headers[propname] = data; 520 } 521 } 522 if (overrides.parameters) { 523 for (propname in overrides.parameters) { 524 data = overrides.parameters[propname]; 525 if (typeof data != "function") batch.map["p-" + propname] = "" + data; 526 } 527 } 528}; 529 530/** @private What is our session id? */ 531dwr.engine._getJSessionId = function() { 532 var cookies = document.cookie.split(';'); 533 for (var i = 0; i < cookies.length; i++) { 534 var cookie = cookies[i]; 535 while (cookie.charAt(0) == ' ') cookie = cookie.substring(1, cookie.length); 536 if (cookie.indexOf(dwr.engine._sessionCookieName + "=") == 0) { 537 return cookie.substring(dwr.engine._sessionCookieName.length + 1, cookie.length); 538 } 539 } 540 return ""; 541}; 542 543/** @private Check for reverse Ajax activity */ 544dwr.engine._checkCometPoll = function() { 545 for (var i = 0; i < dwr.engine._outstandingIFrames.length; i++) { 546 var text = ""; 547 var iframe = dwr.engine._outstandingIFrames[i]; 548 try { 549 text = dwr.engine._getTextFromCometIFrame(iframe); 550 } 551 catch (ex) { 552 dwr.engine._handleWarning(iframe.batch, ex); 553 } 554 if (text != "") dwr.engine._processCometResponse(text, iframe.batch); 555 } 556 if (dwr.engine._pollReq) { 557 var req = dwr.engine._pollReq; 558 var text = req.responseText; 559 if (text != null) dwr.engine._processCometResponse(text, req.batch); 560 } 561 562 // If the poll resources are still there, come back again 563 if (dwr.engine._outstandingIFrames.length > 0 || dwr.engine._pollReq) { 564 setTimeout(dwr.engine._checkCometPoll, dwr.engine._pollCometInterval); 565 } 566}; 567 568/** @private Extract the whole (executed an all) text from the current iframe */ 569dwr.engine._getTextFromCometIFrame = function(frameEle) { 570 var body = frameEle.contentWindow.document.body; 571 if (body == null) return ""; 572 var text = body.innerHTML; 573 // We need to prevent IE from stripping line feeds 574 if (text.indexOf("<PRE>") == 0 || text.indexOf("<pre>") == 0) { 575 text = text.substring(5, text.length - 7); 576 } 577 return text; 578}; 579 580/** @private Some more text might have come in, test and execute the new stuff */ 581dwr.engine._processCometResponse = function(response, batch) { 582 if (batch.charsProcessed == response.length) return; 583 if (response.length == 0) { 584 batch.charsProcessed = 0; 585 return; 586 } 587 588 var firstStartTag = response.indexOf("//#DWR-START#", batch.charsProcessed); 589 if (firstStartTag == -1) { 590 // dwr.engine._debug("No start tag (search from " + batch.charsProcessed + "). skipping '" + response.substring(batch.charsProcessed) + "'"); 591 batch.charsProcessed = response.length; 592 return; 593 } 594 // if (firstStartTag > 0) { 595 // dwr.engine._debug("Start tag not at start (search from " + batch.charsProcessed + "). skipping '" + response.substring(batch.charsProcessed, firstStartTag) + "'"); 596 // } 597 598 var lastEndTag = response.lastIndexOf("//#DWR-END#"); 599 if (lastEndTag == -1) { 600 // dwr.engine._debug("No end tag. unchanged charsProcessed=" + batch.charsProcessed); 601 return; 602 } 603 604 // Skip the end tag too for next time, remembering CR and LF 605 if (response.charCodeAt(lastEndTag + 11) == 13 && response.charCodeAt(lastEndTag + 12) == 10) { 606 batch.charsProcessed = lastEndTag + 13; 607 } 608 else { 609 batch.charsProcessed = lastEndTag + 11; 610 } 611 612 var exec = response.substring(firstStartTag + 13, lastEndTag); 613 614 dwr.engine._receivedBatch = batch; 615 dwr.engine._eval(exec); 616 dwr.engine._receivedBatch = null; 617}; 618 619/** @private Actually send the block of data in the batch object. */ 620dwr.engine._sendData = function(batch) { 621 batch.map.batchId = dwr.engine._nextBatchId; 622 dwr.engine._nextBatchId++; 623 dwr.engine._batches[batch.map.batchId] = batch; 624 dwr.engine._batchesLength++; 625 batch.completed = false;
626 627 for (var i = 0; i < batch.preHooks.length; i++) { 628 /* personalizzazione DM 629 * batch.preHooks[i](); 630 */ 631 batch.preHooks[i](batch); 632 } 633 batch.preHooks = null; 634 // Set a timeout 635 if (batch.timeout && batch.timeout != 0) { 636 batch.timeoutId = setTimeout(function() { dwr.engine._abortRequest(batch); }, batch.timeout); 637 } 638 // Get setup for XMLHttpRequest if possible 639 if (batch.rpcType == dwr.engine.XMLHttpRequest) { 640 if (window.XMLHttpRequest) { 641 batch.req = new XMLHttpRequest(); 642 } 643 // IE5 for the mac claims to support window.ActiveXObject, but throws an error when it's used 644 else if (window.ActiveXObject && !(navigator.userAgent.indexOf("Mac") >= 0 && navigator.userAgent.indexOf("MSIE") >= 0)) { 645 batch.req = dwr.engine._newActiveXObject(dwr.engine._XMLHTTP); 646 } 647 } 648 649 var prop, request; 650 if (batch.req) { 651 // Proceed using XMLHttpRequest 652 if (batch.async) { 653 batch.req.onreadystatechange = function() { 654 if (typeof dwr != 'undefined') dwr.engine._stateChange(batch); 655 }; 656 } 657 // If we're polling, record this for monitoring 658 if (batch.isPoll) { 659 dwr.engine._pollReq = batch.req; 660 // In IE XHR is an ActiveX control so you can't augment it like this 661 if (!(document.all && !window.opera)) batch.req.batch = batch; 662 } 663 // Workaround for Safari 1.x POST bug 664 var indexSafari = navigator.userAgent.indexOf("Safari/"); 665 if (indexSafari >= 0) {
666 var version = navigator.userAgent.substring(indexSafari + 7); 667 if (parseInt(version, 10) < 400) { 668 if (dwr.engine._allowGetForSafariButMakeForgeryEasier == "true") batch.httpMethod = "GET"; 669 else dwr.engine._handleWarning(batch, { name:"dwr.engine.oldSafari", message:"Safari GET support disabled. See getahead.org/dwr/server/servlet and allowGetForSafariButMakeForgeryEasier." }); 670 } 671 } 672 batch.mode = batch.isPoll ? dwr.engine._ModePlainPoll : dwr.engine._ModePlainCall; 673 request = dwr.engine._constructRequest(batch); 674 try { 675 batch.req.open(batch.httpMethod, request.url, batch.async); 676 try { 677 for (prop in batch.headers) { 678 var value = batch.headers[prop]; 679 if (typeof value == "string") batch.req.setRequestHeader(prop, value); 680 } 681 if (!batch.headers["Content-Type"]) batch.req.setRequestHeader("Content-Type", "text/plain"); 682 } 683 catch (ex) { 684 dwr.engine._handleWarning(batch, ex); 685 } 686 batch.req.send(request.body); 687 if (!batch.async) dwr.engine._stateChange(batch); 688 } 689 catch (ex) { 690 dwr.engine._handleError(batch, ex); 691 } 692 } 693 else if (batch.rpcType != dwr.engine.ScriptTag) { 694 var idname = batch.isPoll ? "dwr-if-poll-" + batch.map.batchId : "dwr-if-" + batch.map.batchId; 695 // Removed htmlfile implementation. Don't expect it to return before v3 696 batch.div = document.createElement("div"); 697 // Add the div to the document first, otherwise IE 6 will ignore onload handler. 698 document.body.appendChild(batch.div); 699 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>"; 700 batch.document = document; 701 batch.iframe = batch.document.getElementById(idname); 702 batch.iframe.batch = batch; 703 batch.mode = batch.isPoll ? dwr.engine._ModeHtmlPoll : dwr.engine._ModeHtmlCall; 704 if (batch.isPoll) dwr.engine._outstandingIFrames.push(batch.iframe); 705 request = dwr.engine._constructRequest(batch); 706 if (batch.httpMethod == "GET") { 707 batch.iframe.setAttribute("src", request.url); 708 } 709 else { 710 batch.form = batch.document.createElement("form"); 711 batch.form.setAttribute("id", "dwr-form"); 712 batch.form.setAttribute("action", request.url); 713 batch.form.setAttribute("style", "display:none;"); 714 batch.form.setAttribute("target", idname); 715 batch.form.target = idname; 716 batch.form.setAttribute("method", batch.httpMethod); 717 for (prop in batch.map) { 718 var value = batch.map[prop]; 719 if (typeof value != "function") { 720 var formInput = batch.document.createElement("input"); 721 formInput.setAttribute("type", "hidden"); 722 formInput.setAttribute("name", prop); 723 formInput.setAttribute("value", value); 724 batch.form.appendChild(formInput); 725 } 726 } 727 batch.document.body.appendChild(batch.form); 728 batch.form.submit(); 729 } 730 } 731 else { 732 batch.httpMethod = "GET"; // There's no such thing as ScriptTag using POST 733 batch.mode = batch.isPoll ? dwr.engine._ModePlainPoll : dwr.engine._ModePlainCall; 734 request = dwr.engine._constructRequest(batch); 735 batch.script = document.createElement("script"); 736 batch.script.id = "dwr-st-" + batch.map["c0-id"]; 737 batch.script.src = request.url; 738 document.body.appendChild(batch.script); 739 } 740}; 741 742dwr.engine._ModePlainCall = "/call/plaincall/"; 743dwr.engine._ModeHtmlCall = "/call/htmlcall/"; 744dwr.engine._ModePlainPoll = "/call/plainpoll/"; 745dwr.engine._ModeHtmlPoll = "/call/htmlpoll/"; 746 747/** @private Work out what the URL should look like */ 748dwr.engine._constructRequest = function(batch) { 749 // A quick string to help people that use web log analysers 750 var request = { url:batch.path + batch.mode, body:null }; 751 if (batch.isPoll == true) { 752 request.url += "ReverseAjax.dwr"; 753 } 754 else if (batch.map.callCount == 1) { 755 request.url += batch.map["c0-scriptName"] + "." + batch.map["c0-methodName"] + ".dwr"; 756 } 757 else { 758 request.url += "Multiple." + batch.map.callCount + ".dwr"; 759 } 760 // Play nice with url re-writing
761 var sessionMatch = location.href.match(/jsessionid=([^?]+)/); 762 if (sessionMatch != null) { 763 request.url += ";jsessionid=" + sessionMatch[1]; 764 } 765 766 var prop; 767 if (batch.httpMethod == "GET") { 768 // Some browsers (Opera/Safari2) seem to fail to convert the callCount value 769 // to a string in the loop below so we do it manually here. 770 batch.map.callCount = "" + batch.map.callCount; 771 request.url += "?"; 772 for (prop in batch.map) { 773 if (typeof batch.map[prop] != "function") { 774 request.url += encodeURIComponent(prop) + "=" + encodeURIComponent(batch.map[prop]) + "&"; 775 } 776 } 777 request.url = request.url.substring(0, request.url.length - 1); 778 } 779 else { 780 // PERFORMANCE: for iframe mode this is thrown away. 781 request.body = ""; 782 if (document.all && !window.opera) { 783 // Use array joining on IE (fastest) 784 var buf = []; 785 for (prop in batch.map) { 786 if (typeof batch.map[prop] != "function") { 787 buf.push(prop + "=" + batch.map[prop] + dwr.engine._postSeperator); 788 } 789 } 790 request.body = buf.join(""); 791 } 792 else { 793 // Use string concat on other browsers (fastest) 794 for (prop in batch.map) { 795 if (typeof batch.map[prop] != "function") { 796 request.body += prop + "=" + batch.map[prop] + dwr.engine._postSeperator; 797 } 798 } 799 } 800 request.body = dwr.engine._contentRewriteHandler(request.body); 801 } 802 request.url = dwr.engine._urlRewriteHandler(request.url); 803 return request; 804}; 805 806/** @private Called by XMLHttpRequest to indicate that something has happened */ 807dwr.engine._stateChange = function(batch) { 808 var toEval; 809 810 if (batch.completed) { 811 dwr.engine._debug("Error: _stateChange() with batch.completed"); 812 return; 813 } 814 815 var req = batch.req; 816 try { 817 if (req.readyState != 4) return; 818 } 819 catch (ex) { 820 dwr.engine._handleWarning(batch, ex); 821 // It's broken - clear up and forget this call 822 dwr.engine._clearUp(batch); 823 return; 824 } 825 826 if (dwr.engine._unloading) { 827 dwr.engine._debug("Ignoring reply from server as page is unloading."); 828 return; 829 } 830 831 try { 832 var reply = req.responseText; 833 reply = dwr.engine._replyRewriteHandler(reply); 834 var status = req.status; // causes Mozilla to except on page moves 835 836 if (reply == null || reply == "") { 837 dwr.engine._handleWarning(batch, { name:"dwr.engine.missingData", message:"No data received from server" }); 838 } 839 else if (status != 200) { 840 dwr.engine._handleError(batch, { name:"dwr.engine.http." + status, message:req.statusText }); 841 } 842 else { 843 var contentType = req.getResponseHeader("Content-Type"); 844 if (!contentType.match(/^text\/plain/) && !contentType.match(/^text\/javascript/)) { 845 if (contentType.match(/^text\/html/) && typeof batch.textHtmlHandler == "function") { 846 batch.textHtmlHandler({ status:status, responseText:reply, contentType:contentType }); 847 } 848 else { 849 dwr.engine._handleWarning(batch, { name:"dwr.engine.invalidMimeType", message:"Invalid content type: '" + contentType + "'" }); 850 } 851 } 852 else { 853 // Comet replies might have already partially executed 854 if (batch.isPoll && batch.map.partialResponse == dwr.engine._partialResponseYes) { 855 dwr.engine._processCometResponse(reply, batch); 856 } 857 else { 858 if (reply.search("//#DWR") == -1) { 859 dwr.engine._handleWarning(batch, { name:"dwr.engine.invalidReply", message:"Invalid reply from server" }); 860 } 861 else { 862 toEval = reply; 863 } 864 } 865 } 866 } 867 } 868 catch (ex) { 869 dwr.engine._handleWarning(batch, ex); 870 } 871 872 dwr.engine._callPostHooks(batch); 873 874 // Outside of the try/catch so errors propogate normally: 875 dwr.engine._receivedBatch = batch; 876 if (toEval != null) toEval = toEval.replace(dwr.engine._scriptTagProtection, ""); 877 dwr.engine._eval(toEval); 878 dwr.engine._receivedBatch = null; 879 dwr.engine._validateBatch(batch); 880 if (!batch.completed) dwr.engine._clearUp(batch); 881}; 882 883/** 884 * @private This function is invoked when a batch reply is received. 885 * It checks that there is a response for every call in the batch. Otherwise, 886 * an error will be signaled (a call without a response indicates that the 887 * server failed to send complete batch response). 888 */ 889dwr.engine._validateBatch = function(batch) { 890 // If some call left unreplied, report an error. 891 if (!batch.completed) { 892 for (var i = 0; i < batch.map.callCount; i++) { 893 if (batch.handlers[i] != null) { 894 dwr.engine._handleWarning(batch, { name:"dwr.engine.incompleteReply", message:"Incomplete reply from server" }); 895 break; 896 } 897 } 898 } 899} 900 901/** @private Called from iframe onload, check batch using batch-id */ 902dwr.engine._iframeLoadingComplete = function(batchId) { 903 // dwr.engine._checkCometPoll(); 904 var batch = dwr.engine._batches[batchId]; 905 if (batch) dwr.engine._validateBatch(batch); 906} 907 908/** @private Called by the server: Execute a callback */ 909dwr.engine._remoteHandleCallback = function(batchId, callId, reply) { 910 var batch = dwr.engine._batches[batchId]; 911 if (batch == null) { 912 dwr.engine._debug("Warning: batch == null in remoteHandleCallback for batchId=" + batchId, true); 913 return; 914 } 915 // Error handlers inside here indicate an error that is nothing to do 916 // with DWR so we handle them differently. 917 try { 918 var handlers = batch.handlers[callId]; 919 batch.handlers[callId] = null; 920 if (!handlers) { 921 dwr.engine._debug("Warning: Missing handlers. callId=" + callId, true); 922 } 923 else if (typeof handlers.callback == "function") handlers.callback(reply); 924 }
925 catch (ex) { 926 dwr.engine._handleError(batch, ex); 927 } 928}; 929 930/** @private Called by the server: Handle an exception for a call */ 931dwr.engine._remoteHandleException = function(batchId, callId, ex) { 932 var batch = dwr.engine._batches[batchId]; 933 if (batch == null) { dwr.engine._debug("Warning: null batch in remoteHandleException", true); return; } 934 var handlers = batch.handlers[callId]; 935 batch.handlers[callId] = null; 936 if (handlers == null) { dwr.engine._debug("Warning: null handlers in remoteHandleException", true); return; } 937 if (ex.message == undefined) ex.message = ""; 938 if (typeof handlers.exceptionHandler == "function") handlers.exceptionHandler(ex.message, ex); 939 else if (typeof batch.errorHandler == "function") batch.errorHandler(ex.message, ex); 940}; 941 942/** @private Called by the server: The whole batch is broken */ 943dwr.engine._remoteHandleBatchException = function(ex, batchId) { 944 var searchBatch = (dwr.engine._receivedBatch == null && batchId != null); 945 if (searchBatch) { 946 dwr.engine._receivedBatch = dwr.engine._batches[batchId]; 947 } 948 if (ex.message == undefined) ex.message = ""; 949 dwr.engine._handleError(dwr.engine._receivedBatch, ex); 950 if (searchBatch) { 951 dwr.engine._receivedBatch = null; 952 dwr.engine._clearUp(dwr.engine._batches[batchId]); 953 } 954}; 955 956/** @private Called by the server: Reverse ajax should not be used */ 957dwr.engine._remotePollCometDisabled = function(ex, batchId) { 958 dwr.engine.setActiveReverseAjax(false); 959 var searchBatch = (dwr.engine._receivedBatch == null && batchId != null); 960 if (searchBatch) { 961 dwr.engine._receivedBatch = dwr.engine._batches[batchId]; 962 } 963 if (ex.message == undefined) ex.message = ""; 964 dwr.engine._handleError(dwr.engine._receivedBatch, ex); 965 if (searchBatch) { 966 dwr.engine._receivedBatch = null; 967 dwr.engine._clearUp(dwr.engine._batches[batchId]); 968 } 969}; 970 971/** @private Called by the server: An IFrame reply is about to start */ 972dwr.engine._remoteBeginIFrameResponse = function(iframe, batchId) { 973 if (iframe != null) dwr.engine._receivedBatch = iframe.batch; 974 dwr.engine._callPostHooks(dwr.engine._receivedBatch); 975}; 976 977/** @private Called by the server: An IFrame reply is just completing */ 978dwr.engine._remoteEndIFrameResponse = function(batchId) { 979 dwr.engine._clearUp(dwr.engine._receivedBatch); 980 dwr.engine._receivedBatch = null; 981}; 982 983/** @private This is a hack to make the context be this window */ 984dwr.engine._eval = function(script) { 985 if (script == null) return null; 986 if (script == "") { dwr.engine._debug("Warning: blank script", true); return null; } 987 // dwr.engine._debug("Exec: [" + script + "]", true); 988 return eval(script); 989}; 990 991/** @private Called as a result of a request timeout */ 992dwr.engine._abortRequest = function(batch) { 993 if (batch && !batch.completed) { 994 dwr.engine._clearUp(batch); 995 if (batch.req) batch.req.abort(); 996 dwr.engine._handleError(batch, { name:"dwr.engine.timeout", message:"Timeout" }); 997 } 998}; 999 1000/** @private call all the post hooks for a batch */ 1001dwr.engine._callPostHooks = function(batch) { 1002 if (batch.postHooks) { 1003 for (var i = 0; i < batch.postHooks.length; i++) { 1004 batch.postHooks[i](); 1005 } 1006 batch.postHooks = null; 1007 } 1008}; 1009 1010/** @private A call has finished by whatever means and we need to shut it all down. */ 1011dwr.engine._clearUp = function(batch) { 1012 if (!batch) { dwr.engine._debug("Warning: null batch in dwr.engine._clearUp()", true); return; } 1013 if (batch.completed) { dwr.engine._debug("Warning: Double complete", true); return; } 1014 1015 // IFrame tidyup 1016 if (batch.div) batch.div.parentNode.removeChild(batch.div); 1017 if (batch.iframe) { 1018 // If this is a poll frame then stop comet polling 1019 for (var i = 0; i < dwr.engine._outstandingIFrames.length; i++) { 1020 if (dwr.engine._outstandingIFrames[i] == batch.iframe) { 1021 dwr.engine._outstandingIFrames.splice(i, 1); 1022 } 1023 } 1024 batch.iframe.parentNode.removeChild(batch.iframe); 1025 } 1026 if (batch.form) batch.form.parentNode.removeChild(batch.form); 1027 1028 // XHR tidyup: avoid IE handles increase 1029 if (batch.req) { 1030 // If this is a poll frame then stop comet polling 1031 if (batch.req == dwr.engine._pollReq) dwr.engine._pollReq = null; 1032 delete batch.req; 1033 } 1034 1035 // Timeout tidyup 1036 if (batch.timeoutId) { 1037 clearTimeout(batch.timeoutId); 1038 delete batch.timeoutId; 1039 } 1040 1041 if (batch.map && (batch.map.batchId || batch.map.batchId == 0)
1041) { 1042 delete dwr.engine._batches[batch.map.batchId]; 1043 dwr.engine._batchesLength--; 1044 } 1045 1046 batch.completed = true; 1047 1048 // If there is anything on the queue waiting to go out, then send it. 1049 // We don't need to check for ordered mode, here because when ordered mode 1050 // gets turned off, we still process *waiting* batches in an ordered way. 1051 if (dwr.engine._batchQueue.length != 0) { 1052 var sendbatch = dwr.engine._batchQueue.shift(); 1053 dwr.engine._sendData(sendbatch); 1054 } 1055}; 1056 1057/** @private Abort any XHRs in progress at page unload (solves zombie socket problems in IE). */ 1058dwr.engine._unloader = function() { 1059 dwr.engine._unloading = true; 1060 1061 // Empty queue of waiting ordered requests 1062 dwr.engine._batchQueue.length = 0; 1063 1064 // Abort any ongoing XHRs and clear their batches 1065 for (var batchId in dwr.engine._batches) { 1066 var batch = dwr.engine._batches[batchId]; 1067 // Only process objects that look like batches (avoid prototype additions!) 1068 if (batch && batch.map) { 1069 if (batch.req) { 1070 batch.req.abort(); 1071 } 1072 dwr.engine._clearUp(batch); 1073 } 1074 } 1075}; 1076// Now register the unload handler 1077if (window.addEventListener) window.addEventListener('unload', dwr.engine._unloader, false); 1078else if (window.attachEvent) window.attachEvent('onunload', dwr.engine._unloader); 1079 1080/** @private Generic error handling routing to save having null checks everywhere */ 1081dwr.engine._handleError = function(batch, ex) { 1082 if (typeof ex == "string") ex = { name:"unknown", message:ex }; 1083 if (ex.message == null) ex.message = ""; 1084 if (ex.name == null) ex.name = "unknown"; 1085 if (batch && typeof batch.errorHandler == "function") batch.errorHandler(ex.message, ex); 1086 else if (dwr.engine._errorHandler) dwr.engine._errorHandler(ex.message, ex); 1087 if (batch) dwr.engine._clearUp(batch); 1088}; 1089 1090/** @private Generic error handling routing to save having null checks everywhere */ 1091dwr.engine._handleWarning = function(batch, ex) { 1092 if (typeof ex == "string") ex = { name:"unknown", message:ex }; 1093 if (ex.message == null) ex.message = ""; 1094 if (ex.name == null) ex.name = "unknown"; 1095 if (batch && typeof batch.warningHandler == "function") batch.warningHandler(ex.message, ex); 1096 else if (dwr.engine._warningHandler) dwr.engine._warningHandler(ex.message, ex); 1097 if (batch) dwr.engine._clearUp(batch); 1098}; 1099 1100/** 1101 * @private Marshall a data item 1102 * @param batch A map of variables to how they have been marshalled 1103 * @param referto An array of already marshalled variables to prevent recurrsion 1104 * @param data The data to be marshalled 1105 * @param name The name of the data being marshalled 1106 */ 1107dwr.engine._serializeAll = function(batch, referto, data, name) { 1108 if (data == null) { 1109 batch.map[name] = "null:null"; 1110 return; 1111 } 1112 1113 switch (typeof data) { 1114 case "boolean": 1115 batch.map[name] = "boolean:" + data; 1116 break; 1117 case "number": 1118 batch.map[name] = "number:" + data; 1119 break; 1120 case "string": 1121 batch.map[name] = "string:" + encodeURIComponent(data); 1122 break; 1123 case "object": 1124 var objstr = Object.prototype.toString.call(data); 1125 if (objstr == "[object String]") batch.map[name] = "String:" + encodeURIComponent(data); 1126 else if (objstr == "[object Boolean]") batch.map[name] = "Boolean:" + data; 1127 else if (objstr == "[object Number]") batch.map[name] = "Number:" + data; 1128 else if (objstr == "[object Date]") batch.map[name] = "Date:" + data.getTime(); 1129 else if (objstr == "[object Array]") batch.map[name] = dwr.engine._serializeArray(batch, referto, data, name); 1130 else batch.map[name] = dwr.engine._serializeObject(batch, referto, data, name); 1131 break; 1132 case "function": 1133 // We just ignore functions. 1134 break; 1135 default: 1136 dwr.engine._handleWarning(null, { name:"dwr.engine.unexpectedType", message:"Unexpected type: " + typeof data + ", attempting default converter." }); 1137 batch.map[name] = "default:" + data; 1138 break; 1139 } 1140}; 1141 1142/** @private Have we already converted this object? */ 1143dwr.engine._lookup = function(referto, data, name) { 1144 var lookup; 1145 // Can't use a map: getahead.org/ajax/javascript-gotchas 1146 for (var i = 0; i < referto.length; i++) { 1147 if (referto[i].data == data) { 1148 lookup = referto[i]; 1149 break; 1150 } 1151 } 1152 if (lookup) return "reference:" + lookup.name; 1153 referto.push({ data:data, name:name }); 1154 return null; 1155}; 1156 1157/** @private Marshall an object */ 1158dwr.engine._serializeObject = function(batch, referto, data, name) { 1159 var ref = dwr.engine._lookup(referto, data, name); 1160 if (ref) return ref; 1161 1162 // This check for an HTML is not complete, but is there a better way? 1163 // Maybe we should add: data.hasChildNodes typeof "function" == true 1164 if (data.nodeName && data.nodeType) { 1165 return dwr.engine._serializeXml(batch, referto, data, name); 1166 } 1167 1168 // treat objects as an associative arrays
1169 var reply = "Object_" + dwr.engine._getObjectClassName(data) + ":{"; 1170 var element; 1171 for (element in data) { 1172 if (typeof data[element] != "function") { 1173 batch.paramCount++; 1174 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1175 dwr.engine._serializeAll(batch, referto, data[element], childName); 1176 1177 reply += encodeURIComponent(element) + ":reference:" + childName + ", "; 1178 } 1179 } 1180 1181 if (reply.substring(reply.length - 2) == ", ") { 1182 reply = reply.substring(0, reply.length - 2); 1183 } 1184 reply += "}"; 1185 1186 return reply; 1187}; 1188 1189/** @private Returns the classname of supplied argument obj */ 1190dwr.engine._errorClasses = { "Error":Error, "EvalError":EvalError, "RangeError":RangeError, "ReferenceError":ReferenceError, "SyntaxError":SyntaxError, "TypeError":TypeError, "URIError":URIError }; 1191dwr.engine._getObjectClassName = function(obj) { 1192 // Try to find the classname by stringifying the object's constructor 1193 // and extract <class> from "function <class>". 1194 if (obj && obj.constructor && obj.constructor.toString) 1195 { 1196 var str = obj.constructor.toString(); 1197 var regexpmatch = str.match(/function\s+(\w+)/); 1198 if (regexpmatch && regexpmatch.length == 2) { 1199 return regexpmatch[1]; 1200 } 1201 } 1202 1203 // Now manually test against the core Error classes, as these in some 1204 // browsers successfully match to the wrong class in the 1205 // Object.toString() test we will do later 1206 if (obj && obj.constructor) { 1207 for (var errorname in dwr.engine._errorClasses) { 1208 if (obj.constructor == dwr.engine._errorClasses[errorname]) return errorname; 1209 } 1210 } 1211 1212 // Try to find the classname by calling Object.toString() on the object 1213 // and extracting <class> from "[object <class>]" 1214 if (obj) { 1215 var str = Object.prototype.toString.call(obj); 1216 var regexpmatch = str.match(/\[object\s+(\w+)/); 1217 if (regexpmatch && regexpmatch.length==2) { 1218 return regexpmatch[1]; 1219 } 1220 } 1221 1222 // Supplied argument was probably not an object, but what is better? 1223 return "Object"; 1224}; 1225 1226/** @private Marshall an object */ 1227dwr.engine._serializeXml = function(batch, referto, data, name) { 1228 var ref = dwr.engine._lookup(referto, data, name); 1229 if (ref) return ref; 1230 1231 var output; 1232 if (window.XMLSerializer) output = new XMLSerializer().serializeToString(data); 1233 else if (data.toXml) output = data.toXml; 1234 else output = data.innerHTML; 1235 1236 return "XML:" + encodeURIComponent(output); 1237}; 1238 1239/** @private Marshall an array */ 1240dwr.engine._serializeArray = function(batch, referto, data, name) { 1241 var ref = dwr.engine._lookup(referto, data, name); 1242 if (ref) return ref; 1243 1244 if (document.all && !window.opera) { 1245 // Use array joining on IE (fastest) 1246 var buf = ["Array:["]; 1247 for (var i = 0; i < data.length; i++) { 1248 if (i != 0) buf.push(","); 1249 batch.paramCount++; 1250 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1251 dwr.engine._serializeAll(batch, referto, data[i], childName); 1252 buf.push("reference:"); 1253 buf.push(childName); 1254 } 1255 buf.push("]"); 1256 reply = buf.join(""); 1257 } 1258 else { 1259 // Use string concat on other browsers (fastest) 1260 var reply = "Array:["; 1261 for (var i = 0; i < data.length; i++) { 1262 if (i != 0) reply += ","; 1263 batch.paramCount++; 1264 var childName = "c" + dwr.engine._batch.map.callCount + "-e" + batch.paramCount; 1265 dwr.engine._serializeAll(batch, referto, data[i], childName); 1266 reply += "reference:"; 1267 reply += childName; 1268 } 1269 reply += "]"; 1270 } 1271 1272 return reply; 1273}; 1274 1275/** @private Convert an XML string into a DOM object. */ 1276dwr.engine._unserializeDocument = function(xml) { 1277 var dom; 1278 if (window.DOMParser) { 1279 var parser = new DOMParser(); 1280 dom = parser.parseFromString(xml, "text/xml"); 1281 if (!dom.documentElement || dom.documentElement.tagName == "parsererror") { 1282 var message = dom.documentElement.firstChild.data; 1283 message += "\n" + dom.documentElement.firstChild.nextSibling.firstChild.data; 1284 throw message; 1285 } 1286 return dom; 1287 } 1288 else if (window.ActiveXObject) {
1289 dom = dwr.engine._newActiveXObject(dwr.engine._DOMDocument); 1290 dom.loadXML(xml); // What happens on parse fail with IE? 1291 return dom; 1292 } 1293 else { 1294 var div = document.createElement("div"); 1295 div.innerHTML = xml; 1296 return div; 1297 } 1298}; 1299 1300/** @param axarray An array of strings to attempt to create ActiveX objects from */ 1301dwr.engine._newActiveXObject = function(axarray) { 1302 var returnValue; 1303 for (var i = 0; i < axarray.length; i++) { 1304 try { 1305 returnValue = new ActiveXObject(axarray[i]); 1306 break; 1307 } 1308 catch (ex) { /* ignore */ } 1309 } 1310 return returnValue; 1311}; 1312 1313/** @private Used internally when some message needs to get to the programmer */ 1314dwr.engine._debug = function(message, stacktrace) { 1315 var written = false; 1316 try { 1317 if (window.console) { 1318 if (stacktrace && window.console.trace) window.console.trace(); 1319 window.console.log(message); 1320 written = true; 1321 } 1322 else if (window.opera && window.opera.postError) { 1323 window.opera.postError(message); 1324 written = true; 1325 } 1326 } 1327 catch (ex) { /* ignore */ } 1328 1329 if (!written) { 1330 var debug = document.getElementById("dwr-debug"); 1331 if (debug) { 1332 var contents = message + "<br/>" + debug.innerHTML; 1333 if (contents.length > 2048) contents = contents.substring(0, 2048); 1334 debug.innerHTML = contents; 1335 } 1336 } 1337}; 1338
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.