diff options
Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Request/XMLHttpRequest.js')
| -rw-r--r-- | misc/openlayers/lib/OpenLayers/Request/XMLHttpRequest.js | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/misc/openlayers/lib/OpenLayers/Request/XMLHttpRequest.js b/misc/openlayers/lib/OpenLayers/Request/XMLHttpRequest.js deleted file mode 100644 index 21200a6..0000000 --- a/misc/openlayers/lib/OpenLayers/Request/XMLHttpRequest.js +++ /dev/null @@ -1,458 +0,0 @@ -// XMLHttpRequest.js Copyright (C) 2010 Sergey Ilinsky (http://www.ilinsky.com) -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -/** - * @requires OpenLayers/Request.js - */ - -(function () { - - // Save reference to earlier defined object implementation (if any) - var oXMLHttpRequest = window.XMLHttpRequest; - - // Define on browser type - var bGecko = !!window.controllers, - bIE = window.document.all && !window.opera, - bIE7 = bIE && window.navigator.userAgent.match(/MSIE 7.0/); - - // Enables "XMLHttpRequest()" call next to "new XMLHttpReques()" - function fXMLHttpRequest() { - this._object = oXMLHttpRequest && !bIE7 ? new oXMLHttpRequest : new window.ActiveXObject("Microsoft.XMLHTTP"); - this._listeners = []; - }; - - // Constructor - function cXMLHttpRequest() { - return new fXMLHttpRequest; - }; - cXMLHttpRequest.prototype = fXMLHttpRequest.prototype; - - // BUGFIX: Firefox with Firebug installed would break pages if not executed - if (bGecko && oXMLHttpRequest.wrapped) - cXMLHttpRequest.wrapped = oXMLHttpRequest.wrapped; - - // Constants - cXMLHttpRequest.UNSENT = 0; - cXMLHttpRequest.OPENED = 1; - cXMLHttpRequest.HEADERS_RECEIVED = 2; - cXMLHttpRequest.LOADING = 3; - cXMLHttpRequest.DONE = 4; - - // Public Properties - cXMLHttpRequest.prototype.readyState = cXMLHttpRequest.UNSENT; - cXMLHttpRequest.prototype.responseText = ''; - cXMLHttpRequest.prototype.responseXML = null; - cXMLHttpRequest.prototype.status = 0; - cXMLHttpRequest.prototype.statusText = ''; - - // Priority proposal - cXMLHttpRequest.prototype.priority = "NORMAL"; - - // Instance-level Events Handlers - cXMLHttpRequest.prototype.onreadystatechange = null; - - // Class-level Events Handlers - cXMLHttpRequest.onreadystatechange = null; - cXMLHttpRequest.onopen = null; - cXMLHttpRequest.onsend = null; - cXMLHttpRequest.onabort = null; - - // Public Methods - cXMLHttpRequest.prototype.open = function(sMethod, sUrl, bAsync, sUser, sPassword) { - // Delete headers, required when object is reused - delete this._headers; - - // When bAsync parameter value is omitted, use true as default - if (arguments.length < 3) - bAsync = true; - - // Save async parameter for fixing Gecko bug with missing readystatechange in synchronous requests - this._async = bAsync; - - // Set the onreadystatechange handler - var oRequest = this, - nState = this.readyState, - fOnUnload; - - // BUGFIX: IE - memory leak on page unload (inter-page leak) - if (bIE && bAsync) { - fOnUnload = function() { - if (nState != cXMLHttpRequest.DONE) { - fCleanTransport(oRequest); - // Safe to abort here since onreadystatechange handler removed - oRequest.abort(); - } - }; - window.attachEvent("onunload", fOnUnload); - } - - // Add method sniffer - if (cXMLHttpRequest.onopen) - cXMLHttpRequest.onopen.apply(this, arguments); - - if (arguments.length > 4) - this._object.open(sMethod, sUrl, bAsync, sUser, sPassword); - else - if (arguments.length > 3) - this._object.open(sMethod, sUrl, bAsync, sUser); - else - this._object.open(sMethod, sUrl, bAsync); - - this.readyState = cXMLHttpRequest.OPENED; - fReadyStateChange(this); - - this._object.onreadystatechange = function() { - if (bGecko && !bAsync) - return; - - // Synchronize state - oRequest.readyState = oRequest._object.readyState; - - // - fSynchronizeValues(oRequest); - - // BUGFIX: Firefox fires unnecessary DONE when aborting - if (oRequest._aborted) { - // Reset readyState to UNSENT - oRequest.readyState = cXMLHttpRequest.UNSENT; - - // Return now - return; - } - - if (oRequest.readyState == cXMLHttpRequest.DONE) { - // Free up queue - delete oRequest._data; -/* if (bAsync) - fQueue_remove(oRequest);*/ - // - fCleanTransport(oRequest); -// Uncomment this block if you need a fix for IE cache -/* - // BUGFIX: IE - cache issue - if (!oRequest._object.getResponseHeader("Date")) { - // Save object to cache - oRequest._cached = oRequest._object; - - // Instantiate a new transport object - cXMLHttpRequest.call(oRequest); - - // Re-send request - if (sUser) { - if (sPassword) - oRequest._object.open(sMethod, sUrl, bAsync, sUser, sPassword); - else - oRequest._object.open(sMethod, sUrl, bAsync, sUser); - } - else - oRequest._object.open(sMethod, sUrl, bAsync); - oRequest._object.setRequestHeader("If-Modified-Since", oRequest._cached.getResponseHeader("Last-Modified") || new window.Date(0)); - // Copy headers set - if (oRequest._headers) - for (var sHeader in oRequest._headers) - if (typeof oRequest._headers[sHeader] == "string") // Some frameworks prototype objects with functions - oRequest._object.setRequestHeader(sHeader, oRequest._headers[sHeader]); - - oRequest._object.onreadystatechange = function() { - // Synchronize state - oRequest.readyState = oRequest._object.readyState; - - if (oRequest._aborted) { - // - oRequest.readyState = cXMLHttpRequest.UNSENT; - - // Return - return; - } - - if (oRequest.readyState == cXMLHttpRequest.DONE) { - // Clean Object - fCleanTransport(oRequest); - - // get cached request - if (oRequest.status == 304) - oRequest._object = oRequest._cached; - - // - delete oRequest._cached; - - // - fSynchronizeValues(oRequest); - - // - fReadyStateChange(oRequest); - - // BUGFIX: IE - memory leak in interrupted - if (bIE && bAsync) - window.detachEvent("onunload", fOnUnload); - } - }; - oRequest._object.send(null); - - // Return now - wait until re-sent request is finished - return; - }; -*/ - // BUGFIX: IE - memory leak in interrupted - if (bIE && bAsync) - window.detachEvent("onunload", fOnUnload); - } - - // BUGFIX: Some browsers (Internet Explorer, Gecko) fire OPEN readystate twice - if (nState != oRequest.readyState) - fReadyStateChange(oRequest); - - nState = oRequest.readyState; - } - }; - function fXMLHttpRequest_send(oRequest) { - oRequest._object.send(oRequest._data); - - // BUGFIX: Gecko - missing readystatechange calls in synchronous requests - if (bGecko && !oRequest._async) { - oRequest.readyState = cXMLHttpRequest.OPENED; - - // Synchronize state - fSynchronizeValues(oRequest); - - // Simulate missing states - while (oRequest.readyState < cXMLHttpRequest.DONE) { - oRequest.readyState++; - fReadyStateChange(oRequest); - // Check if we are aborted - if (oRequest._aborted) - return; - } - } - }; - cXMLHttpRequest.prototype.send = function(vData) { - // Add method sniffer - if (cXMLHttpRequest.onsend) - cXMLHttpRequest.onsend.apply(this, arguments); - - if (!arguments.length) - vData = null; - - // BUGFIX: Safari - fails sending documents created/modified dynamically, so an explicit serialization required - // BUGFIX: IE - rewrites any custom mime-type to "text/xml" in case an XMLNode is sent - // BUGFIX: Gecko - fails sending Element (this is up to the implementation either to standard) - if (vData && vData.nodeType) { - vData = window.XMLSerializer ? new window.XMLSerializer().serializeToString(vData) : vData.xml; - if (!this._headers["Content-Type"]) - this._object.setRequestHeader("Content-Type", "application/xml"); - } - - this._data = vData; -/* - // Add to queue - if (this._async) - fQueue_add(this); - else*/ - fXMLHttpRequest_send(this); - }; - cXMLHttpRequest.prototype.abort = function() { - // Add method sniffer - if (cXMLHttpRequest.onabort) - cXMLHttpRequest.onabort.apply(this, arguments); - - // BUGFIX: Gecko - unnecessary DONE when aborting - if (this.readyState > cXMLHttpRequest.UNSENT) - this._aborted = true; - - this._object.abort(); - - // BUGFIX: IE - memory leak - fCleanTransport(this); - - this.readyState = cXMLHttpRequest.UNSENT; - - delete this._data; -/* if (this._async) - fQueue_remove(this);*/ - }; - cXMLHttpRequest.prototype.getAllResponseHeaders = function() { - return this._object.getAllResponseHeaders(); - }; - cXMLHttpRequest.prototype.getResponseHeader = function(sName) { - return this._object.getResponseHeader(sName); - }; - cXMLHttpRequest.prototype.setRequestHeader = function(sName, sValue) { - // BUGFIX: IE - cache issue - if (!this._headers) - this._headers = {}; - this._headers[sName] = sValue; - - return this._object.setRequestHeader(sName, sValue); - }; - - // EventTarget interface implementation - cXMLHttpRequest.prototype.addEventListener = function(sName, fHandler, bUseCapture) { - for (var nIndex = 0, oListener; oListener = this._listeners[nIndex]; nIndex++) - if (oListener[0] == sName && oListener[1] == fHandler && oListener[2] == bUseCapture) - return; - // Add listener - this._listeners.push([sName, fHandler, bUseCapture]); - }; - - cXMLHttpRequest.prototype.removeEventListener = function(sName, fHandler, bUseCapture) { - for (var nIndex = 0, oListener; oListener = this._listeners[nIndex]; nIndex++) - if (oListener[0] == sName && oListener[1] == fHandler && oListener[2] == bUseCapture) - break; - // Remove listener - if (oListener) - this._listeners.splice(nIndex, 1); - }; - - cXMLHttpRequest.prototype.dispatchEvent = function(oEvent) { - var oEventPseudo = { - 'type': oEvent.type, - 'target': this, - 'currentTarget':this, - 'eventPhase': 2, - 'bubbles': oEvent.bubbles, - 'cancelable': oEvent.cancelable, - 'timeStamp': oEvent.timeStamp, - 'stopPropagation': function() {}, // There is no flow - 'preventDefault': function() {}, // There is no default action - 'initEvent': function() {} // Original event object should be initialized - }; - - // Execute onreadystatechange - if (oEventPseudo.type == "readystatechange" && this.onreadystatechange) - (this.onreadystatechange.handleEvent || this.onreadystatechange).apply(this, [oEventPseudo]); - - // Execute listeners - for (var nIndex = 0, oListener; oListener = this._listeners[nIndex]; nIndex++) - if (oListener[0] == oEventPseudo.type && !oListener[2]) - (oListener[1].handleEvent || oListener[1]).apply(this, [oEventPseudo]); - }; - - // - cXMLHttpRequest.prototype.toString = function() { - return '[' + "object" + ' ' + "XMLHttpRequest" + ']'; - }; - - cXMLHttpRequest.toString = function() { - return '[' + "XMLHttpRequest" + ']'; - }; - - // Helper function - function fReadyStateChange(oRequest) { - // Sniffing code - if (cXMLHttpRequest.onreadystatechange) - cXMLHttpRequest.onreadystatechange.apply(oRequest); - - // Fake event - oRequest.dispatchEvent({ - 'type': "readystatechange", - 'bubbles': false, - 'cancelable': false, - 'timeStamp': new Date + 0 - }); - }; - - function fGetDocument(oRequest) { - var oDocument = oRequest.responseXML, - sResponse = oRequest.responseText; - // Try parsing responseText - if (bIE && sResponse && oDocument && !oDocument.documentElement && oRequest.getResponseHeader("Content-Type").match(/[^\/]+\/[^\+]+\+xml/)) { - oDocument = new window.ActiveXObject("Microsoft.XMLDOM"); - oDocument.async = false; - oDocument.validateOnParse = false; - oDocument.loadXML(sResponse); - } - // Check if there is no error in document - if (oDocument) - if ((bIE && oDocument.parseError != 0) || !oDocument.documentElement || (oDocument.documentElement && oDocument.documentElement.tagName == "parsererror")) - return null; - return oDocument; - }; - - function fSynchronizeValues(oRequest) { - try { oRequest.responseText = oRequest._object.responseText; } catch (e) {} - try { oRequest.responseXML = fGetDocument(oRequest._object); } catch (e) {} - try { oRequest.status = oRequest._object.status; } catch (e) {} - try { oRequest.statusText = oRequest._object.statusText; } catch (e) {} - }; - - function fCleanTransport(oRequest) { - // BUGFIX: IE - memory leak (on-page leak) - oRequest._object.onreadystatechange = new window.Function; - }; -/* - // Queue manager - var oQueuePending = {"CRITICAL":[],"HIGH":[],"NORMAL":[],"LOW":[],"LOWEST":[]}, - aQueueRunning = []; - function fQueue_add(oRequest) { - oQueuePending[oRequest.priority in oQueuePending ? oRequest.priority : "NORMAL"].push(oRequest); - // - setTimeout(fQueue_process); - }; - - function fQueue_remove(oRequest) { - for (var nIndex = 0, bFound = false; nIndex < aQueueRunning.length; nIndex++) - if (bFound) - aQueueRunning[nIndex - 1] = aQueueRunning[nIndex]; - else - if (aQueueRunning[nIndex] == oRequest) - bFound = true; - if (bFound) - aQueueRunning.length--; - // - setTimeout(fQueue_process); - }; - - function fQueue_process() { - if (aQueueRunning.length < 6) { - for (var sPriority in oQueuePending) { - if (oQueuePending[sPriority].length) { - var oRequest = oQueuePending[sPriority][0]; - oQueuePending[sPriority] = oQueuePending[sPriority].slice(1); - // - aQueueRunning.push(oRequest); - // Send request - fXMLHttpRequest_send(oRequest); - break; - } - } - } - }; -*/ - // Internet Explorer 5.0 (missing apply) - if (!window.Function.prototype.apply) { - window.Function.prototype.apply = function(oRequest, oArguments) { - if (!oArguments) - oArguments = []; - oRequest.__func = this; - oRequest.__func(oArguments[0], oArguments[1], oArguments[2], oArguments[3], oArguments[4]); - delete oRequest.__func; - }; - }; - - // Register new object with window - /** - * Class: OpenLayers.Request.XMLHttpRequest - * Standard-compliant (W3C) cross-browser implementation of the - * XMLHttpRequest object. From - * http://code.google.com/p/xmlhttprequest/. - */ - if (!OpenLayers.Request) { - /** - * This allows for OpenLayers/Request.js to be included - * before or after this script. - */ - OpenLayers.Request = {}; - } - OpenLayers.Request.XMLHttpRequest = cXMLHttpRequest; -})(); |