--- /dev/null
+/*
+Copyright (c) 2009, Yahoo! Inc. All rights reserved.
+Code licensed under the BSD License:
+http://developer.yahoo.net/yui/license.txt
+version: 2.7.0
+*/
+(function () {
+
+var lang = YAHOO.lang,
+ util = YAHOO.util,
+ Ev = util.Event;
+
+/**
+ * The DataSource utility provides a common configurable interface for widgets to
+ * access a variety of data, from JavaScript arrays to online database servers.
+ *
+ * @module datasource
+ * @requires yahoo, event
+ * @optional json, get, connection
+ * @title DataSource Utility
+ */
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * Base class for the YUI DataSource utility.
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.DataSourceBase
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.DataSourceBase = function(oLiveData, oConfigs) {
+ if(oLiveData === null || oLiveData === undefined) {
+ YAHOO.log("Could not instantiate DataSource due to invalid live database",
+ "error", this.toString());
+ return;
+ }
+
+ this.liveData = oLiveData;
+ this._oQueue = {interval:null, conn:null, requests:[]};
+ this.responseSchema = {};
+
+ // Set any config params passed in to override defaults
+ if(oConfigs && (oConfigs.constructor == Object)) {
+ for(var sConfig in oConfigs) {
+ if(sConfig) {
+ this[sConfig] = oConfigs[sConfig];
+ }
+ }
+ }
+
+ // Validate and initialize public configs
+ var maxCacheEntries = this.maxCacheEntries;
+ if(!lang.isNumber(maxCacheEntries) || (maxCacheEntries < 0)) {
+ maxCacheEntries = 0;
+ }
+
+ // Initialize interval tracker
+ this._aIntervals = [];
+
+ /////////////////////////////////////////////////////////////////////////////
+ //
+ // Custom Events
+ //
+ /////////////////////////////////////////////////////////////////////////////
+
+ /**
+ * Fired when a request is made to the local cache.
+ *
+ * @event cacheRequestEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("cacheRequestEvent");
+
+ /**
+ * Fired when data is retrieved from the local cache.
+ *
+ * @event cacheResponseEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.response {Object} The response object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("cacheResponseEvent");
+
+ /**
+ * Fired when a request is sent to the live data source.
+ *
+ * @event requestEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.tId {Number} Transaction ID.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("requestEvent");
+
+ /**
+ * Fired when live data source sends response.
+ *
+ * @event responseEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.response {Object} The raw response object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.tId {Number} Transaction ID.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("responseEvent");
+
+ /**
+ * Fired when response is parsed.
+ *
+ * @event responseParseEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.response {Object} The parsed response object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("responseParseEvent");
+
+ /**
+ * Fired when response is cached.
+ *
+ * @event responseCacheEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.response {Object} The parsed response object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ */
+ this.createEvent("responseCacheEvent");
+ /**
+ * Fired when an error is encountered with the live data source.
+ *
+ * @event dataErrorEvent
+ * @param oArgs.request {Object} The request object.
+ * @param oArgs.callback {Object} The callback object.
+ * @param oArgs.caller {Object} (deprecated) Use callback.scope.
+ * @param oArgs.message {String} The error message.
+ */
+ this.createEvent("dataErrorEvent");
+
+ /**
+ * Fired when the local cache is flushed.
+ *
+ * @event cacheFlushEvent
+ */
+ this.createEvent("cacheFlushEvent");
+
+ var DS = util.DataSourceBase;
+ this._sName = "DataSource instance" + DS._nIndex;
+ DS._nIndex++;
+ YAHOO.log("DataSource initialized", "info", this.toString());
+};
+
+var DS = util.DataSourceBase;
+
+lang.augmentObject(DS, {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase public constants
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Type is unknown.
+ *
+ * @property TYPE_UNKNOWN
+ * @type Number
+ * @final
+ * @default -1
+ */
+TYPE_UNKNOWN : -1,
+
+/**
+ * Type is a JavaScript Array.
+ *
+ * @property TYPE_JSARRAY
+ * @type Number
+ * @final
+ * @default 0
+ */
+TYPE_JSARRAY : 0,
+
+/**
+ * Type is a JavaScript Function.
+ *
+ * @property TYPE_JSFUNCTION
+ * @type Number
+ * @final
+ * @default 1
+ */
+TYPE_JSFUNCTION : 1,
+
+/**
+ * Type is hosted on a server via an XHR connection.
+ *
+ * @property TYPE_XHR
+ * @type Number
+ * @final
+ * @default 2
+ */
+TYPE_XHR : 2,
+
+/**
+ * Type is JSON.
+ *
+ * @property TYPE_JSON
+ * @type Number
+ * @final
+ * @default 3
+ */
+TYPE_JSON : 3,
+
+/**
+ * Type is XML.
+ *
+ * @property TYPE_XML
+ * @type Number
+ * @final
+ * @default 4
+ */
+TYPE_XML : 4,
+
+/**
+ * Type is plain text.
+ *
+ * @property TYPE_TEXT
+ * @type Number
+ * @final
+ * @default 5
+ */
+TYPE_TEXT : 5,
+
+/**
+ * Type is an HTML TABLE element. Data is parsed out of TR elements from all TBODY elements.
+ *
+ * @property TYPE_HTMLTABLE
+ * @type Number
+ * @final
+ * @default 6
+ */
+TYPE_HTMLTABLE : 6,
+
+/**
+ * Type is hosted on a server via a dynamic script node.
+ *
+ * @property TYPE_SCRIPTNODE
+ * @type Number
+ * @final
+ * @default 7
+ */
+TYPE_SCRIPTNODE : 7,
+
+/**
+ * Type is local.
+ *
+ * @property TYPE_LOCAL
+ * @type Number
+ * @final
+ * @default 8
+ */
+TYPE_LOCAL : 8,
+
+/**
+ * Error message for invalid dataresponses.
+ *
+ * @property ERROR_DATAINVALID
+ * @type String
+ * @final
+ * @default "Invalid data"
+ */
+ERROR_DATAINVALID : "Invalid data",
+
+/**
+ * Error message for null data responses.
+ *
+ * @property ERROR_DATANULL
+ * @type String
+ * @final
+ * @default "Null data"
+ */
+ERROR_DATANULL : "Null data",
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase private static properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Internal class variable to index multiple DataSource instances.
+ *
+ * @property DataSourceBase._nIndex
+ * @type Number
+ * @private
+ * @static
+ */
+_nIndex : 0,
+
+/**
+ * Internal class variable to assign unique transaction IDs.
+ *
+ * @property DataSourceBase._nTransactionId
+ * @type Number
+ * @private
+ * @static
+ */
+_nTransactionId : 0,
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase public static methods
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Executes a configured callback. For object literal callbacks, the third
+ * param determines whether to execute the success handler or failure handler.
+ *
+ * @method issueCallback
+ * @param callback {Function|Object} the callback to execute
+ * @param params {Array} params to be passed to the callback method
+ * @param error {Boolean} whether an error occurred
+ * @param scope {Object} the scope from which to execute the callback
+ * (deprecated - use an object literal callback)
+ * @static
+ */
+issueCallback : function (callback,params,error,scope) {
+ if (lang.isFunction(callback)) {
+ callback.apply(scope, params);
+ } else if (lang.isObject(callback)) {
+ scope = callback.scope || scope || window;
+ var callbackFunc = callback.success;
+ if (error) {
+ callbackFunc = callback.failure;
+ }
+ if (callbackFunc) {
+ callbackFunc.apply(scope, params.concat([callback.argument]));
+ }
+ }
+},
+
+/**
+ * Converts data to type String.
+ *
+ * @method DataSourceBase.parseString
+ * @param oData {String | Number | Boolean | Date | Array | Object} Data to parse.
+ * The special values null and undefined will return null.
+ * @return {String} A string, or null.
+ * @static
+ */
+parseString : function(oData) {
+ // Special case null and undefined
+ if(!lang.isValue(oData)) {
+ return null;
+ }
+
+ //Convert to string
+ var string = oData + "";
+
+ // Validate
+ if(lang.isString(string)) {
+ return string;
+ }
+ else {
+ YAHOO.log("Could not convert data " + lang.dump(oData) + " to type String", "warn", this.toString());
+ return null;
+ }
+},
+
+/**
+ * Converts data to type Number.
+ *
+ * @method DataSourceBase.parseNumber
+ * @param oData {String | Number | Boolean} Data to convert. Note, the following
+ * values return as null: null, undefined, NaN, "".
+ * @return {Number} A number, or null.
+ * @static
+ */
+parseNumber : function(oData) {
+ if(!lang.isValue(oData) || (oData === "")) {
+ return null;
+ }
+
+ //Convert to number
+ var number = oData * 1;
+
+ // Validate
+ if(lang.isNumber(number)) {
+ return number;
+ }
+ else {
+ YAHOO.log("Could not convert data " + lang.dump(oData) + " to type Number", "warn", this.toString());
+ return null;
+ }
+},
+// Backward compatibility
+convertNumber : function(oData) {
+ YAHOO.log("The method YAHOO.util.DataSourceBase.convertNumber() has been" +
+ " deprecated in favor of YAHOO.util.DataSourceBase.parseNumber()", "warn",
+ this.toString());
+ return DS.parseNumber(oData);
+},
+
+/**
+ * Converts data to type Date.
+ *
+ * @method DataSourceBase.parseDate
+ * @param oData {Date | String | Number} Data to convert.
+ * @return {Date} A Date instance.
+ * @static
+ */
+parseDate : function(oData) {
+ var date = null;
+
+ //Convert to date
+ if(!(oData instanceof Date)) {
+ date = new Date(oData);
+ }
+ else {
+ return oData;
+ }
+
+ // Validate
+ if(date instanceof Date) {
+ return date;
+ }
+ else {
+ YAHOO.log("Could not convert data " + lang.dump(oData) + " to type Date", "warn", this.toString());
+ return null;
+ }
+},
+// Backward compatibility
+convertDate : function(oData) {
+ YAHOO.log("The method YAHOO.util.DataSourceBase.convertDate() has been" +
+ " deprecated in favor of YAHOO.util.DataSourceBase.parseDate()", "warn",
+ this.toString());
+ return DS.parseDate(oData);
+}
+
+});
+
+// Done in separate step so referenced functions are defined.
+/**
+ * Data parsing functions.
+ * @property DataSource.Parser
+ * @type Object
+ * @static
+ */
+DS.Parser = {
+ string : DS.parseString,
+ number : DS.parseNumber,
+ date : DS.parseDate
+};
+
+// Prototype properties and methods
+DS.prototype = {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase private properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Name of DataSource instance.
+ *
+ * @property _sName
+ * @type String
+ * @private
+ */
+_sName : null,
+
+/**
+ * Local cache of data result object literals indexed chronologically.
+ *
+ * @property _aCache
+ * @type Object[]
+ * @private
+ */
+_aCache : null,
+
+/**
+ * Local queue of request connections, enabled if queue needs to be managed.
+ *
+ * @property _oQueue
+ * @type Object
+ * @private
+ */
+_oQueue : null,
+
+/**
+ * Array of polling interval IDs that have been enabled, needed to clear all intervals.
+ *
+ * @property _aIntervals
+ * @type Array
+ * @private
+ */
+_aIntervals : null,
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase public properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Max size of the local cache. Set to 0 to turn off caching. Caching is
+ * useful to reduce the number of server connections. Recommended only for data
+ * sources that return comprehensive results for queries or when stale data is
+ * not an issue.
+ *
+ * @property maxCacheEntries
+ * @type Number
+ * @default 0
+ */
+maxCacheEntries : 0,
+
+ /**
+ * Pointer to live database.
+ *
+ * @property liveData
+ * @type Object
+ */
+liveData : null,
+
+/**
+ * Where the live data is held:
+ *
+ * <dl>
+ * <dt>TYPE_UNKNOWN</dt>
+ * <dt>TYPE_LOCAL</dt>
+ * <dt>TYPE_XHR</dt>
+ * <dt>TYPE_SCRIPTNODE</dt>
+ * <dt>TYPE_JSFUNCTION</dt>
+ * </dl>
+ *
+ * @property dataType
+ * @type Number
+ * @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN
+ *
+ */
+dataType : DS.TYPE_UNKNOWN,
+
+/**
+ * Format of response:
+ *
+ * <dl>
+ * <dt>TYPE_UNKNOWN</dt>
+ * <dt>TYPE_JSARRAY</dt>
+ * <dt>TYPE_JSON</dt>
+ * <dt>TYPE_XML</dt>
+ * <dt>TYPE_TEXT</dt>
+ * <dt>TYPE_HTMLTABLE</dt>
+ * </dl>
+ *
+ * @property responseType
+ * @type Number
+ * @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN
+ */
+responseType : DS.TYPE_UNKNOWN,
+
+/**
+ * Response schema object literal takes a combination of the following properties:
+ *
+ * <dl>
+ * <dt>resultsList</dt> <dd>Pointer to array of tabular data</dd>
+ * <dt>resultNode</dt> <dd>Pointer to node name of row data (XML data only)</dd>
+ * <dt>recordDelim</dt> <dd>Record delimiter (text data only)</dd>
+ * <dt>fieldDelim</dt> <dd>Field delimiter (text data only)</dd>
+ * <dt>fields</dt> <dd>Array of field names (aka keys), or array of object literals
+ * such as: {key:"fieldname",parser:YAHOO.util.DataSourceBase.parseDate}</dd>
+ * <dt>metaFields</dt> <dd>Object literal of keys to include in the oParsedResponse.meta collection</dd>
+ * <dt>metaNode</dt> <dd>Name of the node under which to search for meta information in XML response data</dd>
+ * </dl>
+ *
+ * @property responseSchema
+ * @type Object
+ */
+responseSchema : null,
+
+/**
+ * Additional arguments passed to the JSON parse routine. The JSON string
+ * is the assumed first argument (where applicable). This property is not
+ * set by default, but the parse methods will use it if present.
+ *
+ * @property parseJSONArgs
+ * @type {MIXED|Array} If an Array, contents are used as individual arguments.
+ * Otherwise, value is used as an additional argument.
+ */
+// property intentionally undefined
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// DataSourceBase public methods
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Public accessor to the unique name of the DataSource instance.
+ *
+ * @method toString
+ * @return {String} Unique name of the DataSource instance.
+ */
+toString : function() {
+ return this._sName;
+},
+
+/**
+ * Overridable method passes request to cache and returns cached response if any,
+ * refreshing the hit in the cache as the newest item. Returns null if there is
+ * no cache hit.
+ *
+ * @method getCachedResponse
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} Callback object.
+ * @param oCaller {Object} (deprecated) Use callback object.
+ * @return {Object} Cached response object or null.
+ */
+getCachedResponse : function(oRequest, oCallback, oCaller) {
+ var aCache = this._aCache;
+
+ // If cache is enabled...
+ if(this.maxCacheEntries > 0) {
+ // Initialize local cache
+ if(!aCache) {
+ this._aCache = [];
+ YAHOO.log("Cache initialized", "info", this.toString());
+ }
+ // Look in local cache
+ else {
+ var nCacheLength = aCache.length;
+ if(nCacheLength > 0) {
+ var oResponse = null;
+ this.fireEvent("cacheRequestEvent", {request:oRequest,callback:oCallback,caller:oCaller});
+
+ // Loop through each cached element
+ for(var i = nCacheLength-1; i >= 0; i--) {
+ var oCacheElem = aCache[i];
+
+ // Defer cache hit logic to a public overridable method
+ if(this.isCacheHit(oRequest,oCacheElem.request)) {
+ // The cache returned a hit!
+ // Grab the cached response
+ oResponse = oCacheElem.response;
+ this.fireEvent("cacheResponseEvent", {request:oRequest,response:oResponse,callback:oCallback,caller:oCaller});
+
+ // Refresh the position of the cache hit
+ if(i < nCacheLength-1) {
+ // Remove element from its original location
+ aCache.splice(i,1);
+ // Add as newest
+ this.addToCache(oRequest, oResponse);
+ YAHOO.log("Refreshed cache position of the response for \"" + oRequest + "\"", "info", this.toString());
+ }
+
+ // Add a cache flag
+ oResponse.cached = true;
+ break;
+ }
+ }
+ YAHOO.log("The cached response for \"" + lang.dump(oRequest) +
+ "\" is " + lang.dump(oResponse), "info", this.toString());
+ return oResponse;
+ }
+ }
+ }
+ else if(aCache) {
+ this._aCache = null;
+ YAHOO.log("Cache destroyed", "info", this.toString());
+ }
+ return null;
+},
+
+/**
+ * Default overridable method matches given request to given cached request.
+ * Returns true if is a hit, returns false otherwise. Implementers should
+ * override this method to customize the cache-matching algorithm.
+ *
+ * @method isCacheHit
+ * @param oRequest {Object} Request object.
+ * @param oCachedRequest {Object} Cached request object.
+ * @return {Boolean} True if given request matches cached request, false otherwise.
+ */
+isCacheHit : function(oRequest, oCachedRequest) {
+ return (oRequest === oCachedRequest);
+},
+
+/**
+ * Adds a new item to the cache. If cache is full, evicts the stalest item
+ * before adding the new item.
+ *
+ * @method addToCache
+ * @param oRequest {Object} Request object.
+ * @param oResponse {Object} Response object to cache.
+ */
+addToCache : function(oRequest, oResponse) {
+ var aCache = this._aCache;
+ if(!aCache) {
+ return;
+ }
+
+ // If the cache is full, make room by removing stalest element (index=0)
+ while(aCache.length >= this.maxCacheEntries) {
+ aCache.shift();
+ }
+
+ // Add to cache in the newest position, at the end of the array
+ var oCacheElem = {request:oRequest,response:oResponse};
+ aCache[aCache.length] = oCacheElem;
+ this.fireEvent("responseCacheEvent", {request:oRequest,response:oResponse});
+ YAHOO.log("Cached the response for \"" + oRequest + "\"", "info", this.toString());
+},
+
+/**
+ * Flushes cache.
+ *
+ * @method flushCache
+ */
+flushCache : function() {
+ if(this._aCache) {
+ this._aCache = [];
+ this.fireEvent("cacheFlushEvent");
+ YAHOO.log("Flushed the cache", "info", this.toString());
+ }
+},
+
+/**
+ * Sets up a polling mechanism to send requests at set intervals and forward
+ * responses to given callback.
+ *
+ * @method setInterval
+ * @param nMsec {Number} Length of interval in milliseconds.
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Function} Handler function to receive the response.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Interval ID.
+ */
+setInterval : function(nMsec, oRequest, oCallback, oCaller) {
+ if(lang.isNumber(nMsec) && (nMsec >= 0)) {
+ YAHOO.log("Enabling polling to live data for \"" + oRequest + "\" at interval " + nMsec, "info", this.toString());
+ var oSelf = this;
+ var nId = setInterval(function() {
+ oSelf.makeConnection(oRequest, oCallback, oCaller);
+ }, nMsec);
+ this._aIntervals.push(nId);
+ return nId;
+ }
+ else {
+ YAHOO.log("Could not enable polling to live data for \"" + oRequest + "\" at interval " + nMsec, "info", this.toString());
+ }
+},
+
+/**
+ * Disables polling mechanism associated with the given interval ID.
+ *
+ * @method clearInterval
+ * @param nId {Number} Interval ID.
+ */
+clearInterval : function(nId) {
+ // Remove from tracker if there
+ var tracker = this._aIntervals || [];
+ for(var i=tracker.length-1; i>-1; i--) {
+ if(tracker[i] === nId) {
+ tracker.splice(i,1);
+ clearInterval(nId);
+ }
+ }
+},
+
+/**
+ * Disables all known polling intervals.
+ *
+ * @method clearAllIntervals
+ */
+clearAllIntervals : function() {
+ var tracker = this._aIntervals || [];
+ for(var i=tracker.length-1; i>-1; i--) {
+ clearInterval(tracker[i]);
+ }
+ tracker = [];
+},
+
+/**
+ * First looks for cached response, then sends request to live data. The
+ * following arguments are passed to the callback function:
+ * <dl>
+ * <dt><code>oRequest</code></dt>
+ * <dd>The same value that was passed in as the first argument to sendRequest.</dd>
+ * <dt><code>oParsedResponse</code></dt>
+ * <dd>An object literal containing the following properties:
+ * <dl>
+ * <dt><code>tId</code></dt>
+ * <dd>Unique transaction ID number.</dd>
+ * <dt><code>results</code></dt>
+ * <dd>Schema-parsed data results.</dd>
+ * <dt><code>error</code></dt>
+ * <dd>True in cases of data error.</dd>
+ * <dt><code>cached</code></dt>
+ * <dd>True when response is returned from DataSource cache.</dd>
+ * <dt><code>meta</code></dt>
+ * <dd>Schema-parsed meta data.</dd>
+ * </dl>
+ * <dt><code>oPayload</code></dt>
+ * <dd>The same value as was passed in as <code>argument</code> in the oCallback object literal.</dd>
+ * </dl>
+ *
+ * @method sendRequest
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} An object literal with the following properties:
+ * <dl>
+ * <dt><code>success</code></dt>
+ * <dd>The function to call when the data is ready.</dd>
+ * <dt><code>failure</code></dt>
+ * <dd>The function to call upon a response failure condition.</dd>
+ * <dt><code>scope</code></dt>
+ * <dd>The object to serve as the scope for the success and failure handlers.</dd>
+ * <dt><code>argument</code></dt>
+ * <dd>Arbitrary data that will be passed back to the success and failure handlers.</dd>
+ * </dl>
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Transaction ID, or null if response found in cache.
+ */
+sendRequest : function(oRequest, oCallback, oCaller) {
+ // First look in cache
+ var oCachedResponse = this.getCachedResponse(oRequest, oCallback, oCaller);
+ if(oCachedResponse) {
+ DS.issueCallback(oCallback,[oRequest,oCachedResponse],false,oCaller);
+ return null;
+ }
+
+
+ // Not in cache, so forward request to live data
+ YAHOO.log("Making connection to live data for \"" + oRequest + "\"", "info", this.toString());
+ return this.makeConnection(oRequest, oCallback, oCaller);
+},
+
+/**
+ * Overridable default method generates a unique transaction ID and passes
+ * the live data reference directly to the handleResponse function. This
+ * method should be implemented by subclasses to achieve more complex behavior
+ * or to access remote data.
+ *
+ * @method makeConnection
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} Callback object literal.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Transaction ID.
+ */
+makeConnection : function(oRequest, oCallback, oCaller) {
+ var tId = DS._nTransactionId++;
+ this.fireEvent("requestEvent", {tId:tId, request:oRequest,callback:oCallback,caller:oCaller});
+
+ /* accounts for the following cases:
+ YAHOO.util.DataSourceBase.TYPE_UNKNOWN
+ YAHOO.util.DataSourceBase.TYPE_JSARRAY
+ YAHOO.util.DataSourceBase.TYPE_JSON
+ YAHOO.util.DataSourceBase.TYPE_HTMLTABLE
+ YAHOO.util.DataSourceBase.TYPE_XML
+ YAHOO.util.DataSourceBase.TYPE_TEXT
+ */
+ var oRawResponse = this.liveData;
+
+ this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
+ return tId;
+},
+
+/**
+ * Receives raw data response and type converts to XML, JSON, etc as necessary.
+ * Forwards oFullResponse to appropriate parsing function to get turned into
+ * oParsedResponse. Calls doBeforeCallback() and adds oParsedResponse to
+ * the cache when appropriate before calling issueCallback().
+ *
+ * The oParsedResponse object literal has the following properties:
+ * <dl>
+ * <dd><dt>tId {Number}</dt> Unique transaction ID</dd>
+ * <dd><dt>results {Array}</dt> Array of parsed data results</dd>
+ * <dd><dt>meta {Object}</dt> Object literal of meta values</dd>
+ * <dd><dt>error {Boolean}</dt> (optional) True if there was an error</dd>
+ * <dd><dt>cached {Boolean}</dt> (optional) True if response was cached</dd>
+ * </dl>
+ *
+ * @method handleResponse
+ * @param oRequest {Object} Request object
+ * @param oRawResponse {Object} The raw response from the live database.
+ * @param oCallback {Object} Callback object literal.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @param tId {Number} Transaction ID.
+ */
+handleResponse : function(oRequest, oRawResponse, oCallback, oCaller, tId) {
+ this.fireEvent("responseEvent", {tId:tId, request:oRequest, response:oRawResponse,
+ callback:oCallback, caller:oCaller});
+ YAHOO.log("Received live data response for \"" + oRequest + "\"", "info", this.toString());
+ var xhr = (this.dataType == DS.TYPE_XHR) ? true : false;
+ var oParsedResponse = null;
+ var oFullResponse = oRawResponse;
+
+ // Try to sniff data type if it has not been defined
+ if(this.responseType === DS.TYPE_UNKNOWN) {
+ var ctype = (oRawResponse && oRawResponse.getResponseHeader) ? oRawResponse.getResponseHeader["Content-Type"] : null;
+ if(ctype) {
+ // xml
+ if(ctype.indexOf("text/xml") > -1) {
+ this.responseType = DS.TYPE_XML;
+ }
+ else if(ctype.indexOf("application/json") > -1) { // json
+ this.responseType = DS.TYPE_JSON;
+ }
+ else if(ctype.indexOf("text/plain") > -1) { // text
+ this.responseType = DS.TYPE_TEXT;
+ }
+ }
+ else {
+ if(YAHOO.lang.isArray(oRawResponse)) { // array
+ this.responseType = DS.TYPE_JSARRAY;
+ }
+ // xml
+ else if(oRawResponse && oRawResponse.nodeType && oRawResponse.nodeType == 9) {
+ this.responseType = DS.TYPE_XML;
+ }
+ else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
+ this.responseType = DS.TYPE_HTMLTABLE;
+ }
+ else if(YAHOO.lang.isObject(oRawResponse)) { // json
+ this.responseType = DS.TYPE_JSON;
+ }
+ else if(YAHOO.lang.isString(oRawResponse)) { // text
+ this.responseType = DS.TYPE_TEXT;
+ }
+ }
+ }
+
+ switch(this.responseType) {
+ case DS.TYPE_JSARRAY:
+ if(xhr && oRawResponse && oRawResponse.responseText) {
+ oFullResponse = oRawResponse.responseText;
+ }
+ try {
+ // Convert to JS array if it's a string
+ if(lang.isString(oFullResponse)) {
+ var parseArgs = [oFullResponse].concat(this.parseJSONArgs);
+ // Check for YUI JSON Util
+ if(lang.JSON) {
+ oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs);
+ }
+ // Look for JSON parsers using an API similar to json2.js
+ else if(window.JSON && JSON.parse) {
+ oFullResponse = JSON.parse.apply(JSON,parseArgs);
+ }
+ // Look for JSON parsers using an API similar to json.js
+ else if(oFullResponse.parseJSON) {
+ oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1));
+ }
+ // No JSON lib found so parse the string
+ else {
+ // Trim leading spaces
+ while (oFullResponse.length > 0 &&
+ (oFullResponse.charAt(0) != "{") &&
+ (oFullResponse.charAt(0) != "[")) {
+ oFullResponse = oFullResponse.substring(1, oFullResponse.length);
+ }
+
+ if(oFullResponse.length > 0) {
+ // Strip extraneous stuff at the end
+ var arrayEnd =
+Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}"));
+ oFullResponse = oFullResponse.substring(0,arrayEnd+1);
+
+ // Turn the string into an object literal...
+ // ...eval is necessary here
+ oFullResponse = eval("(" + oFullResponse + ")");
+
+ }
+ }
+ }
+ }
+ catch(e1) {
+ }
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseArrayData(oRequest, oFullResponse);
+ break;
+ case DS.TYPE_JSON:
+ if(xhr && oRawResponse && oRawResponse.responseText) {
+ oFullResponse = oRawResponse.responseText;
+ }
+ try {
+ // Convert to JSON object if it's a string
+ if(lang.isString(oFullResponse)) {
+ var parseArgs = [oFullResponse].concat(this.parseJSONArgs);
+ // Check for YUI JSON Util
+ if(lang.JSON) {
+ oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs);
+ }
+ // Look for JSON parsers using an API similar to json2.js
+ else if(window.JSON && JSON.parse) {
+ oFullResponse = JSON.parse.apply(JSON,parseArgs);
+ }
+ // Look for JSON parsers using an API similar to json.js
+ else if(oFullResponse.parseJSON) {
+ oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1));
+ }
+ // No JSON lib found so parse the string
+ else {
+ // Trim leading spaces
+ while (oFullResponse.length > 0 &&
+ (oFullResponse.charAt(0) != "{") &&
+ (oFullResponse.charAt(0) != "[")) {
+ oFullResponse = oFullResponse.substring(1, oFullResponse.length);
+ }
+
+ if(oFullResponse.length > 0) {
+ // Strip extraneous stuff at the end
+ var objEnd = Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}"));
+ oFullResponse = oFullResponse.substring(0,objEnd+1);
+
+ // Turn the string into an object literal...
+ // ...eval is necessary here
+ oFullResponse = eval("(" + oFullResponse + ")");
+
+ }
+ }
+ }
+ }
+ catch(e) {
+ }
+
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseJSONData(oRequest, oFullResponse);
+ break;
+ case DS.TYPE_HTMLTABLE:
+ if(xhr && oRawResponse.responseText) {
+ var el = document.createElement('div');
+ el.innerHTML = oRawResponse.responseText;
+ oFullResponse = el.getElementsByTagName('table')[0];
+ }
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseHTMLTableData(oRequest, oFullResponse);
+ break;
+ case DS.TYPE_XML:
+ if(xhr && oRawResponse.responseXML) {
+ oFullResponse = oRawResponse.responseXML;
+ }
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseXMLData(oRequest, oFullResponse);
+ break;
+ case DS.TYPE_TEXT:
+ if(xhr && lang.isString(oRawResponse.responseText)) {
+ oFullResponse = oRawResponse.responseText;
+ }
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseTextData(oRequest, oFullResponse);
+ break;
+ default:
+ oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
+ oParsedResponse = this.parseData(oRequest, oFullResponse);
+ break;
+ }
+
+
+ // Clean up for consistent signature
+ oParsedResponse = oParsedResponse || {};
+ if(!oParsedResponse.results) {
+ oParsedResponse.results = [];
+ }
+ if(!oParsedResponse.meta) {
+ oParsedResponse.meta = {};
+ }
+
+ // Success
+ if(oParsedResponse && !oParsedResponse.error) {
+ // Last chance to touch the raw response or the parsed response
+ oParsedResponse = this.doBeforeCallback(oRequest, oFullResponse, oParsedResponse, oCallback);
+ this.fireEvent("responseParseEvent", {request:oRequest,
+ response:oParsedResponse, callback:oCallback, caller:oCaller});
+ // Cache the response
+ this.addToCache(oRequest, oParsedResponse);
+ }
+ // Error
+ else {
+ // Be sure the error flag is on
+ oParsedResponse.error = true;
+ this.fireEvent("dataErrorEvent", {request:oRequest, response: oRawResponse, callback:oCallback,
+ caller:oCaller, message:DS.ERROR_DATANULL});
+ YAHOO.log(DS.ERROR_DATANULL, "error", this.toString());
+ }
+
+ // Send the response back to the caller
+ oParsedResponse.tId = tId;
+ DS.issueCallback(oCallback,[oRequest,oParsedResponse],oParsedResponse.error,oCaller);
+},
+
+/**
+ * Overridable method gives implementers access to the original full response
+ * before the data gets parsed. Implementers should take care not to return an
+ * unparsable or otherwise invalid response.
+ *
+ * @method doBeforeParseData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full response from the live database.
+ * @param oCallback {Object} The callback object.
+ * @return {Object} Full response for parsing.
+
+ */
+doBeforeParseData : function(oRequest, oFullResponse, oCallback) {
+ return oFullResponse;
+},
+
+/**
+ * Overridable method gives implementers access to the original full response and
+ * the parsed response (parsed against the given schema) before the data
+ * is added to the cache (if applicable) and then sent back to callback function.
+ * This is your chance to access the raw response and/or populate the parsed
+ * response with any custom data.
+ *
+ * @method doBeforeCallback
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full response from the live database.
+ * @param oParsedResponse {Object} The parsed response to return to calling object.
+ * @param oCallback {Object} The callback object.
+ * @return {Object} Parsed response object.
+ */
+doBeforeCallback : function(oRequest, oFullResponse, oParsedResponse, oCallback) {
+ return oParsedResponse;
+},
+
+/**
+ * Overridable method parses data of generic RESPONSE_TYPE into a response object.
+ *
+ * @method parseData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full Array from the live database.
+ * @return {Object} Parsed response object with the following properties:<br>
+ * - results {Array} Array of parsed data results<br>
+ * - meta {Object} Object literal of meta values<br>
+ * - error {Boolean} (optional) True if there was an error<br>
+ */
+parseData : function(oRequest, oFullResponse) {
+ if(lang.isValue(oFullResponse)) {
+ var oParsedResponse = {results:oFullResponse,meta:{}};
+ YAHOO.log("Parsed generic data is " +
+ lang.dump(oParsedResponse), "info", this.toString());
+ return oParsedResponse;
+
+ }
+ YAHOO.log("Generic data could not be parsed: " + lang.dump(oFullResponse),
+ "error", this.toString());
+ return null;
+},
+
+/**
+ * Overridable method parses Array data into a response object.
+ *
+ * @method parseArrayData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full Array from the live database.
+ * @return {Object} Parsed response object with the following properties:<br>
+ * - results (Array) Array of parsed data results<br>
+ * - error (Boolean) True if there was an error
+ */
+parseArrayData : function(oRequest, oFullResponse) {
+ if(lang.isArray(oFullResponse)) {
+ var results = [],
+ i, j,
+ rec, field, data;
+
+ // Parse for fields
+ if(lang.isArray(this.responseSchema.fields)) {
+ var fields = this.responseSchema.fields;
+ for (i = fields.length - 1; i >= 0; --i) {
+ if (typeof fields[i] !== 'object') {
+ fields[i] = { key : fields[i] };
+ }
+ }
+
+ var parsers = {}, p;
+ for (i = fields.length - 1; i >= 0; --i) {
+ p = (typeof fields[i].parser === 'function' ?
+ fields[i].parser :
+ DS.Parser[fields[i].parser+'']) || fields[i].converter;
+ if (p) {
+ parsers[fields[i].key] = p;
+ }
+ }
+
+ var arrType = lang.isArray(oFullResponse[0]);
+ for(i=oFullResponse.length-1; i>-1; i--) {
+ var oResult = {};
+ rec = oFullResponse[i];
+ if (typeof rec === 'object') {
+ for(j=fields.length-1; j>-1; j--) {
+ field = fields[j];
+ data = arrType ? rec[j] : rec[field.key];
+
+ if (parsers[field.key]) {
+ data = parsers[field.key].call(this,data);
+ }
+
+ // Safety measure
+ if(data === undefined) {
+ data = null;
+ }
+
+ oResult[field.key] = data;
+ }
+ }
+ else if (lang.isString(rec)) {
+ for(j=fields.length-1; j>-1; j--) {
+ field = fields[j];
+ data = rec;
+
+ if (parsers[field.key]) {
+ data = parsers[field.key].call(this,data);
+ }
+
+ // Safety measure
+ if(data === undefined) {
+ data = null;
+ }
+
+ oResult[field.key] = data;
+ }
+ }
+ results[i] = oResult;
+ }
+ }
+ // Return entire data set
+ else {
+ results = oFullResponse;
+ }
+ var oParsedResponse = {results:results};
+ YAHOO.log("Parsed array data is " +
+ lang.dump(oParsedResponse), "info", this.toString());
+ return oParsedResponse;
+
+ }
+ YAHOO.log("Array data could not be parsed: " + lang.dump(oFullResponse),
+ "error", this.toString());
+ return null;
+},
+
+/**
+ * Overridable method parses plain text data into a response object.
+ *
+ * @method parseTextData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full text response from the live database.
+ * @return {Object} Parsed response object with the following properties:<br>
+ * - results (Array) Array of parsed data results<br>
+ * - error (Boolean) True if there was an error
+ */
+parseTextData : function(oRequest, oFullResponse) {
+ if(lang.isString(oFullResponse)) {
+ if(lang.isString(this.responseSchema.recordDelim) &&
+ lang.isString(this.responseSchema.fieldDelim)) {
+ var oParsedResponse = {results:[]};
+ var recDelim = this.responseSchema.recordDelim;
+ var fieldDelim = this.responseSchema.fieldDelim;
+ if(oFullResponse.length > 0) {
+ // Delete the last line delimiter at the end of the data if it exists
+ var newLength = oFullResponse.length-recDelim.length;
+ if(oFullResponse.substr(newLength) == recDelim) {
+ oFullResponse = oFullResponse.substr(0, newLength);
+ }
+ if(oFullResponse.length > 0) {
+ // Split along record delimiter to get an array of strings
+ var recordsarray = oFullResponse.split(recDelim);
+ // Cycle through each record
+ for(var i = 0, len = recordsarray.length, recIdx = 0; i < len; ++i) {
+ var bError = false,
+ sRecord = recordsarray[i];
+ if (lang.isString(sRecord) && (sRecord.length > 0)) {
+ // Split each record along field delimiter to get data
+ var fielddataarray = recordsarray[i].split(fieldDelim);
+ var oResult = {};
+
+ // Filter for fields data
+ if(lang.isArray(this.responseSchema.fields)) {
+ var fields = this.responseSchema.fields;
+ for(var j=fields.length-1; j>-1; j--) {
+ try {
+ // Remove quotation marks from edges, if applicable
+ var data = fielddataarray[j];
+ if (lang.isString(data)) {
+ if(data.charAt(0) == "\"") {
+ data = data.substr(1);
+ }
+ if(data.charAt(data.length-1) == "\"") {
+ data = data.substr(0,data.length-1);
+ }
+ var field = fields[j];
+ var key = (lang.isValue(field.key)) ? field.key : field;
+ // Backward compatibility
+ if(!field.parser && field.converter) {
+ field.parser = field.converter;
+ YAHOO.log("The field property converter has been deprecated" +
+ " in favor of parser", "warn", this.toString());
+ }
+ var parser = (typeof field.parser === 'function') ?
+ field.parser :
+ DS.Parser[field.parser+''];
+ if(parser) {
+ data = parser.call(this, data);
+ }
+ // Safety measure
+ if(data === undefined) {
+ data = null;
+ }
+ oResult[key] = data;
+ }
+ else {
+ bError = true;
+ }
+ }
+ catch(e) {
+ bError = true;
+ }
+ }
+ }
+ // No fields defined so pass along all data as an array
+ else {
+ oResult = fielddataarray;
+ }
+ if(!bError) {
+ oParsedResponse.results[recIdx++] = oResult;
+ }
+ }
+ }
+ }
+ }
+ YAHOO.log("Parsed text data is " +
+ lang.dump(oParsedResponse), "info", this.toString());
+ return oParsedResponse;
+ }
+ }
+ YAHOO.log("Text data could not be parsed: " + lang.dump(oFullResponse),
+ "error", this.toString());
+ return null;
+
+},
+
+
+/**
+ * Overridable method parses XML data for one result into an object literal.
+ *
+ * @method parseXMLResult
+ * @param result {XML} XML for one result.
+ * @return {Object} Object literal of data for one result.
+ */
+parseXMLResult : function(result) {
+ var oResult = {},
+ schema = this.responseSchema;
+
+ try {
+ // Loop through each data field in each result using the schema
+ for(var m = schema.fields.length-1; m >= 0 ; m--) {
+ var field = schema.fields[m];
+ var key = (lang.isValue(field.key)) ? field.key : field;
+ var data = null;
+ // Values may be held in an attribute...
+ var xmlAttr = result.attributes.getNamedItem(key);
+ if(xmlAttr) {
+ data = xmlAttr.value;
+ }
+ // ...or in a node
+ else {
+ var xmlNode = result.getElementsByTagName(key);
+ if(xmlNode && xmlNode.item(0)) {
+ var item = xmlNode.item(0);
+ // For IE, then DOM...
+ data = (item) ? ((item.text) ? item.text : (item.textContent) ? item.textContent : null) : null;
+ // ...then fallback, but check for multiple child nodes
+ if(!data) {
+ var datapieces = [];
+ for(var j=0, len=item.childNodes.length; j<len; j++) {
+ if(item.childNodes[j].nodeValue) {
+ datapieces[datapieces.length] = item.childNodes[j].nodeValue;
+ }
+ }
+ if(datapieces.length > 0) {
+ data = datapieces.join("");
+ }
+ }
+ }
+ }
+ // Safety net
+ if(data === null) {
+ data = "";
+ }
+ // Backward compatibility
+ if(!field.parser && field.converter) {
+ field.parser = field.converter;
+ YAHOO.log("The field property converter has been deprecated" +
+ " in favor of parser", "warn", this.toString());
+ }
+ var parser = (typeof field.parser === 'function') ?
+ field.parser :
+ DS.Parser[field.parser+''];
+ if(parser) {
+ data = parser.call(this, data);
+ }
+ // Safety measure
+ if(data === undefined) {
+ data = null;
+ }
+ oResult[key] = data;
+ }
+ }
+ catch(e) {
+ YAHOO.log("Error while parsing XML result: " + e.message);
+ }
+
+ return oResult;
+},
+
+
+
+/**
+ * Overridable method parses XML data into a response object.
+ *
+ * @method parseXMLData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full XML response from the live database.
+ * @return {Object} Parsed response object with the following properties<br>
+ * - results (Array) Array of parsed data results<br>
+ * - error (Boolean) True if there was an error
+ */
+parseXMLData : function(oRequest, oFullResponse) {
+ var bError = false,
+ schema = this.responseSchema,
+ oParsedResponse = {meta:{}},
+ xmlList = null,
+ metaNode = schema.metaNode,
+ metaLocators = schema.metaFields || {},
+ i,k,loc,v;
+
+ // In case oFullResponse is something funky
+ try {
+ xmlList = (schema.resultNode) ?
+ oFullResponse.getElementsByTagName(schema.resultNode) :
+ null;
+
+ // Pull any meta identified
+ metaNode = metaNode ? oFullResponse.getElementsByTagName(metaNode)[0] :
+ oFullResponse;
+
+ if (metaNode) {
+ for (k in metaLocators) {
+ if (lang.hasOwnProperty(metaLocators, k)) {
+ loc = metaLocators[k];
+ // Look for a node
+ v = metaNode.getElementsByTagName(loc)[0];
+
+ if (v) {
+ v = v.firstChild.nodeValue;
+ } else {
+ // Look for an attribute
+ v = metaNode.attributes.getNamedItem(loc);
+ if (v) {
+ v = v.value;
+ }
+ }
+
+ if (lang.isValue(v)) {
+ oParsedResponse.meta[k] = v;
+ }
+ }
+
+ }
+ }
+ }
+ catch(e) {
+ YAHOO.log("Error while parsing XML data: " + e.message);
+ }
+ if(!xmlList || !lang.isArray(schema.fields)) {
+ bError = true;
+ }
+ // Loop through each result
+ else {
+ oParsedResponse.results = [];
+ for(i = xmlList.length-1; i >= 0 ; --i) {
+ var oResult = this.parseXMLResult(xmlList.item(i));
+ // Capture each array of values into an array of results
+ oParsedResponse.results[i] = oResult;
+ }
+ }
+ if(bError) {
+ YAHOO.log("XML data could not be parsed: " +
+ lang.dump(oFullResponse), "error", this.toString());
+ oParsedResponse.error = true;
+ }
+ else {
+ YAHOO.log("Parsed XML data is " +
+ lang.dump(oParsedResponse), "info", this.toString());
+ }
+ return oParsedResponse;
+},
+
+/**
+ * Overridable method parses JSON data into a response object.
+ *
+ * @method parseJSONData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full JSON from the live database.
+ * @return {Object} Parsed response object with the following properties<br>
+ * - results (Array) Array of parsed data results<br>
+ * - error (Boolean) True if there was an error
+ */
+parseJSONData : function(oRequest, oFullResponse) {
+ var oParsedResponse = {results:[],meta:{}};
+
+ if(lang.isObject(oFullResponse) && this.responseSchema.resultsList) {
+ var schema = this.responseSchema,
+ fields = schema.fields,
+ resultsList = oFullResponse,
+ results = [],
+ metaFields = schema.metaFields || {},
+ fieldParsers = [],
+ fieldPaths = [],
+ simpleFields = [],
+ bError = false,
+ i,len,j,v,key,parser,path;
+
+ // Function to convert the schema's fields into walk paths
+ var buildPath = function (needle) {
+ var path = null, keys = [], i = 0;
+ if (needle) {
+ // Strip the ["string keys"] and [1] array indexes
+ needle = needle.
+ replace(/\[(['"])(.*?)\1\]/g,
+ function (x,$1,$2) {keys[i]=$2;return '.@'+(i++);}).
+ replace(/\[(\d+)\]/g,
+ function (x,$1) {keys[i]=parseInt($1,10)|0;return '.@'+(i++);}).
+ replace(/^\./,''); // remove leading dot
+
+ // If the cleaned needle contains invalid characters, the
+ // path is invalid
+ if (!/[^\w\.\$@]/.test(needle)) {
+ path = needle.split('.');
+ for (i=path.length-1; i >= 0; --i) {
+ if (path[i].charAt(0) === '@') {
+ path[i] = keys[parseInt(path[i].substr(1),10)];
+ }
+ }
+ }
+ else {
+ YAHOO.log("Invalid locator: " + needle, "error", this.toString());
+ }
+ }
+ return path;
+ };
+
+
+ // Function to walk a path and return the pot of gold
+ var walkPath = function (path, origin) {
+ var v=origin,i=0,len=path.length;
+ for (;i<len && v;++i) {
+ v = v[path[i]];
+ }
+ return v;
+ };
+
+ // Parse the response
+ // Step 1. Pull the resultsList from oFullResponse (default assumes
+ // oFullResponse IS the resultsList)
+ path = buildPath(schema.resultsList);
+ if (path) {
+ resultsList = walkPath(path, oFullResponse);
+ if (resultsList === undefined) {
+ bError = true;
+ }
+ } else {
+ bError = true;
+ }
+
+ if (!resultsList) {
+ resultsList = [];
+ }
+
+ if (!lang.isArray(resultsList)) {
+ resultsList = [resultsList];
+ }
+
+ if (!bError) {
+ // Step 2. Parse out field data if identified
+ if(schema.fields) {
+ var field;
+ // Build the field parser map and location paths
+ for (i=0, len=fields.length; i<len; i++) {
+ field = fields[i];
+ key = field.key || field;
+ parser = ((typeof field.parser === 'function') ?
+ field.parser :
+ DS.Parser[field.parser+'']) || field.converter;
+ path = buildPath(key);
+
+ if (parser) {
+ fieldParsers[fieldParsers.length] = {key:key,parser:parser};
+ }
+
+ if (path) {
+ if (path.length > 1) {
+ fieldPaths[fieldPaths.length] = {key:key,path:path};
+ } else {
+ simpleFields[simpleFields.length] = {key:key,path:path[0]};
+ }
+ } else {
+ YAHOO.log("Invalid key syntax: " + key,"warn",this.toString());
+ }
+ }
+
+ // Process the results, flattening the records and/or applying parsers if needed
+ for (i = resultsList.length - 1; i >= 0; --i) {
+ var r = resultsList[i], rec = {};
+ if(r) {
+ for (j = simpleFields.length - 1; j >= 0; --j) {
+ // Bug 1777850: data might be held in an array
+ rec[simpleFields[j].key] =
+ (r[simpleFields[j].path] !== undefined) ?
+ r[simpleFields[j].path] : r[j];
+ }
+
+ for (j = fieldPaths.length - 1; j >= 0; --j) {
+ rec[fieldPaths[j].key] = walkPath(fieldPaths[j].path,r);
+ }
+
+ for (j = fieldParsers.length - 1; j >= 0; --j) {
+ var p = fieldParsers[j].key;
+ rec[p] = fieldParsers[j].parser(rec[p]);
+ if (rec[p] === undefined) {
+ rec[p] = null;
+ }
+ }
+ }
+ results[i] = rec;
+ }
+ }
+ else {
+ results = resultsList;
+ }
+
+ for (key in metaFields) {
+ if (lang.hasOwnProperty(metaFields,key)) {
+ path = buildPath(metaFields[key]);
+ if (path) {
+ v = walkPath(path, oFullResponse);
+ oParsedResponse.meta[key] = v;
+ }
+ }
+ }
+
+ } else {
+ YAHOO.log("JSON data could not be parsed due to invalid responseSchema.resultsList or invalid response: " +
+ lang.dump(oFullResponse), "error", this.toString());
+
+ oParsedResponse.error = true;
+ }
+
+ oParsedResponse.results = results;
+ }
+ else {
+ YAHOO.log("JSON data could not be parsed: " +
+ lang.dump(oFullResponse), "error", this.toString());
+ oParsedResponse.error = true;
+ }
+
+ return oParsedResponse;
+},
+
+/**
+ * Overridable method parses an HTML TABLE element reference into a response object.
+ * Data is parsed out of TR elements from all TBODY elements.
+ *
+ * @method parseHTMLTableData
+ * @param oRequest {Object} Request object.
+ * @param oFullResponse {Object} The full HTML element reference from the live database.
+ * @return {Object} Parsed response object with the following properties<br>
+ * - results (Array) Array of parsed data results<br>
+ * - error (Boolean) True if there was an error
+ */
+parseHTMLTableData : function(oRequest, oFullResponse) {
+ var bError = false;
+ var elTable = oFullResponse;
+ var fields = this.responseSchema.fields;
+ var oParsedResponse = {results:[]};
+
+ if(lang.isArray(fields)) {
+ // Iterate through each TBODY
+ for(var i=0; i<elTable.tBodies.length; i++) {
+ var elTbody = elTable.tBodies[i];
+
+ // Iterate through each TR
+ for(var j=elTbody.rows.length-1; j>-1; j--) {
+ var elRow = elTbody.rows[j];
+ var oResult = {};
+
+ for(var k=fields.length-1; k>-1; k--) {
+ var field = fields[k];
+ var key = (lang.isValue(field.key)) ? field.key : field;
+ var data = elRow.cells[k].innerHTML;
+
+ // Backward compatibility
+ if(!field.parser && field.converter) {
+ field.parser = field.converter;
+ YAHOO.log("The field property converter has been deprecated" +
+ " in favor of parser", "warn", this.toString());
+ }
+ var parser = (typeof field.parser === 'function') ?
+ field.parser :
+ DS.Parser[field.parser+''];
+ if(parser) {
+ data = parser.call(this, data);
+ }
+ // Safety measure
+ if(data === undefined) {
+ data = null;
+ }
+ oResult[key] = data;
+ }
+ oParsedResponse.results[j] = oResult;
+ }
+ }
+ }
+ else {
+ bError = true;
+ YAHOO.log("Invalid responseSchema.fields", "error", this.toString());
+ }
+
+ if(bError) {
+ YAHOO.log("HTML TABLE data could not be parsed: " +
+ lang.dump(oFullResponse), "error", this.toString());
+ oParsedResponse.error = true;
+ }
+ else {
+ YAHOO.log("Parsed HTML TABLE data is " +
+ lang.dump(oParsedResponse), "info", this.toString());
+ }
+ return oParsedResponse;
+}
+
+};
+
+// DataSourceBase uses EventProvider
+lang.augmentProto(DS, util.EventProvider);
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * LocalDataSource class for in-memory data structs including JavaScript arrays,
+ * JavaScript object literals (JSON), XML documents, and HTML tables.
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.LocalDataSource
+ * @extends YAHOO.util.DataSourceBase
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.LocalDataSource = function(oLiveData, oConfigs) {
+ this.dataType = DS.TYPE_LOCAL;
+
+ if(oLiveData) {
+ if(YAHOO.lang.isArray(oLiveData)) { // array
+ this.responseType = DS.TYPE_JSARRAY;
+ }
+ // xml
+ else if(oLiveData.nodeType && oLiveData.nodeType == 9) {
+ this.responseType = DS.TYPE_XML;
+ }
+ else if(oLiveData.nodeName && (oLiveData.nodeName.toLowerCase() == "table")) { // table
+ this.responseType = DS.TYPE_HTMLTABLE;
+ oLiveData = oLiveData.cloneNode(true);
+ }
+ else if(YAHOO.lang.isString(oLiveData)) { // text
+ this.responseType = DS.TYPE_TEXT;
+ }
+ else if(YAHOO.lang.isObject(oLiveData)) { // json
+ this.responseType = DS.TYPE_JSON;
+ }
+ }
+ else {
+ oLiveData = [];
+ this.responseType = DS.TYPE_JSARRAY;
+ }
+
+ util.LocalDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
+};
+
+// LocalDataSource extends DataSourceBase
+lang.extend(util.LocalDataSource, DS);
+
+// Copy static members to LocalDataSource class
+lang.augmentObject(util.LocalDataSource, DS);
+
+
+
+
+
+
+
+
+
+
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * FunctionDataSource class for JavaScript functions.
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.FunctionDataSource
+ * @extends YAHOO.util.DataSourceBase
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.FunctionDataSource = function(oLiveData, oConfigs) {
+ this.dataType = DS.TYPE_JSFUNCTION;
+ oLiveData = oLiveData || function() {};
+
+ util.FunctionDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
+};
+
+// FunctionDataSource extends DataSourceBase
+lang.extend(util.FunctionDataSource, DS, {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// FunctionDataSource public properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Context in which to execute the function. By default, is the DataSource
+ * instance itself. If set, the function will receive the DataSource instance
+ * as an additional argument.
+ *
+ * @property scope
+ * @type Object
+ * @default null
+ */
+scope : null,
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// FunctionDataSource public methods
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Overriding method passes query to a function. The returned response is then
+ * forwarded to the handleResponse function.
+ *
+ * @method makeConnection
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} Callback object literal.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Transaction ID.
+ */
+makeConnection : function(oRequest, oCallback, oCaller) {
+ var tId = DS._nTransactionId++;
+ this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
+
+ // Pass the request in as a parameter and
+ // forward the return value to the handler
+
+
+ var oRawResponse = (this.scope) ? this.liveData.call(this.scope, oRequest, this) : this.liveData(oRequest);
+
+ // Try to sniff data type if it has not been defined
+ if(this.responseType === DS.TYPE_UNKNOWN) {
+ if(YAHOO.lang.isArray(oRawResponse)) { // array
+ this.responseType = DS.TYPE_JSARRAY;
+ }
+ // xml
+ else if(oRawResponse && oRawResponse.nodeType && oRawResponse.nodeType == 9) {
+ this.responseType = DS.TYPE_XML;
+ }
+ else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
+ this.responseType = DS.TYPE_HTMLTABLE;
+ }
+ else if(YAHOO.lang.isObject(oRawResponse)) { // json
+ this.responseType = DS.TYPE_JSON;
+ }
+ else if(YAHOO.lang.isString(oRawResponse)) { // text
+ this.responseType = DS.TYPE_TEXT;
+ }
+ }
+
+ this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
+ return tId;
+}
+
+});
+
+// Copy static members to FunctionDataSource class
+lang.augmentObject(util.FunctionDataSource, DS);
+
+
+
+
+
+
+
+
+
+
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * ScriptNodeDataSource class for accessing remote data via the YUI Get Utility.
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.ScriptNodeDataSource
+ * @extends YAHOO.util.DataSourceBase
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.ScriptNodeDataSource = function(oLiveData, oConfigs) {
+ this.dataType = DS.TYPE_SCRIPTNODE;
+ oLiveData = oLiveData || "";
+
+ util.ScriptNodeDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
+};
+
+// ScriptNodeDataSource extends DataSourceBase
+lang.extend(util.ScriptNodeDataSource, DS, {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// ScriptNodeDataSource public properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Alias to YUI Get Utility, to allow implementers to use a custom class.
+ *
+ * @property getUtility
+ * @type Object
+ * @default YAHOO.util.Get
+ */
+getUtility : util.Get,
+
+/**
+ * Defines request/response management in the following manner:
+ * <dl>
+ * <!--<dt>queueRequests</dt>
+ * <dd>If a request is already in progress, wait until response is returned before sending the next request.</dd>
+ * <dt>cancelStaleRequests</dt>
+ * <dd>If a request is already in progress, cancel it before sending the next request.</dd>-->
+ * <dt>ignoreStaleResponses</dt>
+ * <dd>Send all requests, but handle only the response for the most recently sent request.</dd>
+ * <dt>allowAll</dt>
+ * <dd>Send all requests and handle all responses.</dd>
+ * </dl>
+ *
+ * @property asyncMode
+ * @type String
+ * @default "allowAll"
+ */
+asyncMode : "allowAll",
+
+/**
+ * Callback string parameter name sent to the remote script. By default,
+ * requests are sent to
+ * <URI>?<scriptCallbackParam>=callbackFunction
+ *
+ * @property scriptCallbackParam
+ * @type String
+ * @default "callback"
+ */
+scriptCallbackParam : "callback",
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// ScriptNodeDataSource public methods
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Creates a request callback that gets appended to the script URI. Implementers
+ * can customize this string to match their server's query syntax.
+ *
+ * @method generateRequestCallback
+ * @return {String} String fragment that gets appended to script URI that
+ * specifies the callback function
+ */
+generateRequestCallback : function(id) {
+ return "&" + this.scriptCallbackParam + "=YAHOO.util.ScriptNodeDataSource.callbacks["+id+"]" ;
+},
+
+/**
+ * Overridable method gives implementers access to modify the URI before the dynamic
+ * script node gets inserted. Implementers should take care not to return an
+ * invalid URI.
+ *
+ * @method doBeforeGetScriptNode
+ * @param {String} URI to the script
+ * @return {String} URI to the script
+ */
+doBeforeGetScriptNode : function(sUri) {
+ return sUri;
+},
+
+/**
+ * Overriding method passes query to Get Utility. The returned
+ * response is then forwarded to the handleResponse function.
+ *
+ * @method makeConnection
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} Callback object literal.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Transaction ID.
+ */
+makeConnection : function(oRequest, oCallback, oCaller) {
+ var tId = DS._nTransactionId++;
+ this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
+
+ // If there are no global pending requests, it is safe to purge global callback stack and global counter
+ if(util.ScriptNodeDataSource._nPending === 0) {
+ util.ScriptNodeDataSource.callbacks = [];
+ util.ScriptNodeDataSource._nId = 0;
+ }
+
+ // ID for this request
+ var id = util.ScriptNodeDataSource._nId;
+ util.ScriptNodeDataSource._nId++;
+
+ // Dynamically add handler function with a closure to the callback stack
+ var oSelf = this;
+ util.ScriptNodeDataSource.callbacks[id] = function(oRawResponse) {
+ if((oSelf.asyncMode !== "ignoreStaleResponses")||
+ (id === util.ScriptNodeDataSource.callbacks.length-1)) { // Must ignore stale responses
+
+ // Try to sniff data type if it has not been defined
+ if(oSelf.responseType === DS.TYPE_UNKNOWN) {
+ if(YAHOO.lang.isArray(oRawResponse)) { // array
+ oSelf.responseType = DS.TYPE_JSARRAY;
+ }
+ // xml
+ else if(oRawResponse.nodeType && oRawResponse.nodeType == 9) {
+ oSelf.responseType = DS.TYPE_XML;
+ }
+ else if(oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
+ oSelf.responseType = DS.TYPE_HTMLTABLE;
+ }
+ else if(YAHOO.lang.isObject(oRawResponse)) { // json
+ oSelf.responseType = DS.TYPE_JSON;
+ }
+ else if(YAHOO.lang.isString(oRawResponse)) { // text
+ oSelf.responseType = DS.TYPE_TEXT;
+ }
+ }
+
+ oSelf.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
+ }
+ else {
+ YAHOO.log("DataSource ignored stale response for tId " + tId + "(" + oRequest + ")", "info", oSelf.toString());
+ }
+
+ delete util.ScriptNodeDataSource.callbacks[id];
+ };
+
+ // We are now creating a request
+ util.ScriptNodeDataSource._nPending++;
+ var sUri = this.liveData + oRequest + this.generateRequestCallback(id);
+ sUri = this.doBeforeGetScriptNode(sUri);
+ YAHOO.log("DataSource is querying URL " + sUri, "info", this.toString());
+ this.getUtility.script(sUri,
+ {autopurge: true,
+ onsuccess: util.ScriptNodeDataSource._bumpPendingDown,
+ onfail: util.ScriptNodeDataSource._bumpPendingDown});
+
+ return tId;
+}
+
+});
+
+// Copy static members to ScriptNodeDataSource class
+lang.augmentObject(util.ScriptNodeDataSource, DS);
+
+// Copy static members to ScriptNodeDataSource class
+lang.augmentObject(util.ScriptNodeDataSource, {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// ScriptNodeDataSource private static properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Unique ID to track requests.
+ *
+ * @property _nId
+ * @type Number
+ * @private
+ * @static
+ */
+_nId : 0,
+
+/**
+ * Counter for pending requests. When this is 0, it is safe to purge callbacks
+ * array.
+ *
+ * @property _nPending
+ * @type Number
+ * @private
+ * @static
+ */
+_nPending : 0,
+
+/**
+ * Global array of callback functions, one for each request sent.
+ *
+ * @property callbacks
+ * @type Function[]
+ * @static
+ */
+callbacks : []
+
+});
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * XHRDataSource class for accessing remote data via the YUI Connection Manager
+ * Utility
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.XHRDataSource
+ * @extends YAHOO.util.DataSourceBase
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.XHRDataSource = function(oLiveData, oConfigs) {
+ this.dataType = DS.TYPE_XHR;
+ this.connMgr = this.connMgr || util.Connect;
+ oLiveData = oLiveData || "";
+
+ util.XHRDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
+};
+
+// XHRDataSource extends DataSourceBase
+lang.extend(util.XHRDataSource, DS, {
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// XHRDataSource public properties
+//
+/////////////////////////////////////////////////////////////////////////////
+
+ /**
+ * Alias to YUI Connection Manager, to allow implementers to use a custom class.
+ *
+ * @property connMgr
+ * @type Object
+ * @default YAHOO.util.Connect
+ */
+connMgr: null,
+
+ /**
+ * Defines request/response management in the following manner:
+ * <dl>
+ * <dt>queueRequests</dt>
+ * <dd>If a request is already in progress, wait until response is returned
+ * before sending the next request.</dd>
+ *
+ * <dt>cancelStaleRequests</dt>
+ * <dd>If a request is already in progress, cancel it before sending the next
+ * request.</dd>
+ *
+ * <dt>ignoreStaleResponses</dt>
+ * <dd>Send all requests, but handle only the response for the most recently
+ * sent request.</dd>
+ *
+ * <dt>allowAll</dt>
+ * <dd>Send all requests and handle all responses.</dd>
+ *
+ * </dl>
+ *
+ * @property connXhrMode
+ * @type String
+ * @default "allowAll"
+ */
+connXhrMode: "allowAll",
+
+ /**
+ * True if data is to be sent via POST. By default, data will be sent via GET.
+ *
+ * @property connMethodPost
+ * @type Boolean
+ * @default false
+ */
+connMethodPost: false,
+
+ /**
+ * The connection timeout defines how many milliseconds the XHR connection will
+ * wait for a server response. Any non-zero value will enable the Connection Manager's
+ * Auto-Abort feature.
+ *
+ * @property connTimeout
+ * @type Number
+ * @default 0
+ */
+connTimeout: 0,
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// XHRDataSource public methods
+//
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Overriding method passes query to Connection Manager. The returned
+ * response is then forwarded to the handleResponse function.
+ *
+ * @method makeConnection
+ * @param oRequest {Object} Request object.
+ * @param oCallback {Object} Callback object literal.
+ * @param oCaller {Object} (deprecated) Use oCallback.scope.
+ * @return {Number} Transaction ID.
+ */
+makeConnection : function(oRequest, oCallback, oCaller) {
+
+ var oRawResponse = null;
+ var tId = DS._nTransactionId++;
+ this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
+
+ // Set up the callback object and
+ // pass the request in as a URL query and
+ // forward the response to the handler
+ var oSelf = this;
+ var oConnMgr = this.connMgr;
+ var oQueue = this._oQueue;
+
+ /**
+ * Define Connection Manager success handler
+ *
+ * @method _xhrSuccess
+ * @param oResponse {Object} HTTPXMLRequest object
+ * @private
+ */
+ var _xhrSuccess = function(oResponse) {
+ // If response ID does not match last made request ID,
+ // silently fail and wait for the next response
+ if(oResponse && (this.connXhrMode == "ignoreStaleResponses") &&
+ (oResponse.tId != oQueue.conn.tId)) {
+ YAHOO.log("Ignored stale response", "warn", this.toString());
+ return null;
+ }
+ // Error if no response
+ else if(!oResponse) {
+ this.fireEvent("dataErrorEvent", {request:oRequest,
+ callback:oCallback, caller:oCaller,
+ message:DS.ERROR_DATANULL});
+ YAHOO.log(DS.ERROR_DATANULL, "error", this.toString());
+
+ // Send error response back to the caller with the error flag on
+ DS.issueCallback(oCallback,[oRequest, {error:true}], true, oCaller);
+
+ return null;
+ }
+ // Forward to handler
+ else {
+ // Try to sniff data type if it has not been defined
+ if(this.responseType === DS.TYPE_UNKNOWN) {
+ var ctype = (oResponse.getResponseHeader) ? oResponse.getResponseHeader["Content-Type"] : null;
+ if(ctype) {
+ // xml
+ if(ctype.indexOf("text/xml") > -1) {
+ this.responseType = DS.TYPE_XML;
+ }
+ else if(ctype.indexOf("application/json") > -1) { // json
+ this.responseType = DS.TYPE_JSON;
+ }
+ else if(ctype.indexOf("text/plain") > -1) { // text
+ this.responseType = DS.TYPE_TEXT;
+ }
+ }
+ }
+ this.handleResponse(oRequest, oResponse, oCallback, oCaller, tId);
+ }
+ };
+
+ /**
+ * Define Connection Manager failure handler
+ *
+ * @method _xhrFailure
+ * @param oResponse {Object} HTTPXMLRequest object
+ * @private
+ */
+ var _xhrFailure = function(oResponse) {
+ this.fireEvent("dataErrorEvent", {request:oRequest,
+ callback:oCallback, caller:oCaller,
+ message:DS.ERROR_DATAINVALID});
+ YAHOO.log(DS.ERROR_DATAINVALID + ": " +
+ oResponse.statusText, "error", this.toString());
+
+ // Backward compatibility
+ if(lang.isString(this.liveData) && lang.isString(oRequest) &&
+ (this.liveData.lastIndexOf("?") !== this.liveData.length-1) &&
+ (oRequest.indexOf("?") !== 0)){
+ YAHOO.log("DataSources using XHR no longer automatically supply " +
+ "a \"?\" between the host and query parameters" +
+ " -- please check that the request URL is correct", "warn", this.toString());
+ }
+
+ // Send failure response back to the caller with the error flag on
+ oResponse = oResponse || {};
+ oResponse.error = true;
+ DS.issueCallback(oCallback,[oRequest,oResponse],true, oCaller);
+
+ return null;
+ };
+
+ /**
+ * Define Connection Manager callback object
+ *
+ * @property _xhrCallback
+ * @param oResponse {Object} HTTPXMLRequest object
+ * @private
+ */
+ var _xhrCallback = {
+ success:_xhrSuccess,
+ failure:_xhrFailure,
+ scope: this
+ };
+
+ // Apply Connection Manager timeout
+ if(lang.isNumber(this.connTimeout)) {
+ _xhrCallback.timeout = this.connTimeout;
+ }
+
+ // Cancel stale requests
+ if(this.connXhrMode == "cancelStaleRequests") {
+ // Look in queue for stale requests
+ if(oQueue.conn) {
+ if(oConnMgr.abort) {
+ oConnMgr.abort(oQueue.conn);
+ oQueue.conn = null;
+ YAHOO.log("Canceled stale request", "warn", this.toString());
+ }
+ else {
+ YAHOO.log("Could not find Connection Manager abort() function", "error", this.toString());
+ }
+ }
+ }
+
+ // Get ready to send the request URL
+ if(oConnMgr && oConnMgr.asyncRequest) {
+ var sLiveData = this.liveData;
+ var isPost = this.connMethodPost;
+ var sMethod = (isPost) ? "POST" : "GET";
+ // Validate request
+ var sUri = (isPost || !lang.isValue(oRequest)) ? sLiveData : sLiveData+oRequest;
+ var sRequest = (isPost) ? oRequest : null;
+
+ // Send the request right away
+ if(this.connXhrMode != "queueRequests") {
+ oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest);
+ }
+ // Queue up then send the request
+ else {
+ // Found a request already in progress
+ if(oQueue.conn) {
+ var allRequests = oQueue.requests;
+ // Add request to queue
+ allRequests.push({request:oRequest, callback:_xhrCallback});
+
+ // Interval needs to be started
+ if(!oQueue.interval) {
+ oQueue.interval = setInterval(function() {
+ // Connection is in progress
+ if(oConnMgr.isCallInProgress(oQueue.conn)) {
+ return;
+ }
+ else {
+ // Send next request
+ if(allRequests.length > 0) {
+ // Validate request
+ sUri = (isPost || !lang.isValue(allRequests[0].request)) ? sLiveData : sLiveData+allRequests[0].request;
+ sRequest = (isPost) ? allRequests[0].request : null;
+ oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, allRequests[0].callback, sRequest);
+
+ // Remove request from queue
+ allRequests.shift();
+ }
+ // No more requests
+ else {
+ clearInterval(oQueue.interval);
+ oQueue.interval = null;
+ }
+ }
+ }, 50);
+ }
+ }
+ // Nothing is in progress
+ else {
+ oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest);
+ }
+ }
+ }
+ else {
+ YAHOO.log("Could not find Connection Manager asyncRequest() function", "error", this.toString());
+ // Send null response back to the caller with the error flag on
+ DS.issueCallback(oCallback,[oRequest,{error:true}],true,oCaller);
+ }
+
+ return tId;
+}
+
+});
+
+// Copy static members to XHRDataSource class
+lang.augmentObject(util.XHRDataSource, DS);
+
+
+
+
+
+
+
+
+
+
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * Factory class for creating a BaseDataSource subclass instance. The sublcass is
+ * determined by oLiveData's type, unless the dataType config is explicitly passed in.
+ *
+ * @namespace YAHOO.util
+ * @class YAHOO.util.DataSource
+ * @constructor
+ * @param oLiveData {HTMLElement} Pointer to live data.
+ * @param oConfigs {object} (optional) Object literal of configuration values.
+ */
+util.DataSource = function(oLiveData, oConfigs) {
+ oConfigs = oConfigs || {};
+
+ // Point to one of the subclasses, first by dataType if given, then by sniffing oLiveData type.
+ var dataType = oConfigs.dataType;
+ if(dataType) {
+ if(dataType == DS.TYPE_LOCAL) {
+ lang.augmentObject(util.DataSource, util.LocalDataSource);
+ return new util.LocalDataSource(oLiveData, oConfigs);
+ }
+ else if(dataType == DS.TYPE_XHR) {
+ lang.augmentObject(util.DataSource, util.XHRDataSource);
+ return new util.XHRDataSource(oLiveData, oConfigs);
+ }
+ else if(dataType == DS.TYPE_SCRIPTNODE) {
+ lang.augmentObject(util.DataSource, util.ScriptNodeDataSource);
+ return new util.ScriptNodeDataSource(oLiveData, oConfigs);
+ }
+ else if(dataType == DS.TYPE_JSFUNCTION) {
+ lang.augmentObject(util.DataSource, util.FunctionDataSource);
+ return new util.FunctionDataSource(oLiveData, oConfigs);
+ }
+ }
+
+ if(YAHOO.lang.isString(oLiveData)) { // strings default to xhr
+ lang.augmentObject(util.DataSource, util.XHRDataSource);
+ return new util.XHRDataSource(oLiveData, oConfigs);
+ }
+ else if(YAHOO.lang.isFunction(oLiveData)) {
+ lang.augmentObject(util.DataSource, util.FunctionDataSource);
+ return new util.FunctionDataSource(oLiveData, oConfigs);
+ }
+ else { // ultimate default is local
+ lang.augmentObject(util.DataSource, util.LocalDataSource);
+ return new util.LocalDataSource(oLiveData, oConfigs);
+ }
+};
+
+// Copy static members to DataSource class
+lang.augmentObject(util.DataSource, DS);
+
+})();
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+/**
+ * The static Number class provides helper functions to deal with data of type
+ * Number.
+ *
+ * @namespace YAHOO.util
+ * @requires yahoo
+ * @class Number
+ * @static
+ */
+ YAHOO.util.Number = {
+
+ /**
+ * Takes a native JavaScript Number and formats to string for display to user.
+ *
+ * @method format
+ * @param nData {Number} Number.
+ * @param oConfig {Object} (Optional) Optional configuration values:
+ * <dl>
+ * <dt>prefix {String}</dd>
+ * <dd>String prepended before each number, like a currency designator "$"</dd>
+ * <dt>decimalPlaces {Number}</dd>
+ * <dd>Number of decimal places to round.</dd>
+ * <dt>decimalSeparator {String}</dd>
+ * <dd>Decimal separator</dd>
+ * <dt>thousandsSeparator {String}</dd>
+ * <dd>Thousands separator</dd>
+ * <dt>suffix {String}</dd>
+ * <dd>String appended after each number, like " items" (note the space)</dd>
+ * </dl>
+ * @return {String} Formatted number for display. Note, the following values
+ * return as "": null, undefined, NaN, "".
+ */
+ format : function(nData, oConfig) {
+ var lang = YAHOO.lang;
+ if(!lang.isValue(nData) || (nData === "")) {
+ return "";
+ }
+
+ oConfig = oConfig || {};
+
+ if(!lang.isNumber(nData)) {
+ nData *= 1;
+ }
+
+ if(lang.isNumber(nData)) {
+ var bNegative = (nData < 0);
+ var sOutput = nData + "";
+ var sDecimalSeparator = (oConfig.decimalSeparator) ? oConfig.decimalSeparator : ".";
+ var nDotIndex;
+
+ // Manage decimals
+ if(lang.isNumber(oConfig.decimalPlaces)) {
+ // Round to the correct decimal place
+ var nDecimalPlaces = oConfig.decimalPlaces;
+ var nDecimal = Math.pow(10, nDecimalPlaces);
+ sOutput = Math.round(nData*nDecimal)/nDecimal + "";
+ nDotIndex = sOutput.lastIndexOf(".");
+
+ if(nDecimalPlaces > 0) {
+ // Add the decimal separator
+ if(nDotIndex < 0) {
+ sOutput += sDecimalSeparator;
+ nDotIndex = sOutput.length-1;
+ }
+ // Replace the "."
+ else if(sDecimalSeparator !== "."){
+ sOutput = sOutput.replace(".",sDecimalSeparator);
+ }
+ // Add missing zeros
+ while((sOutput.length - 1 - nDotIndex) < nDecimalPlaces) {
+ sOutput += "0";
+ }
+ }
+ }
+
+ // Add the thousands separator
+ if(oConfig.thousandsSeparator) {
+ var sThousandsSeparator = oConfig.thousandsSeparator;
+ nDotIndex = sOutput.lastIndexOf(sDecimalSeparator);
+ nDotIndex = (nDotIndex > -1) ? nDotIndex : sOutput.length;
+ var sNewOutput = sOutput.substring(nDotIndex);
+ var nCount = -1;
+ for (var i=nDotIndex; i>0; i--) {
+ nCount++;
+ if ((nCount%3 === 0) && (i !== nDotIndex) && (!bNegative || (i > 1))) {
+ sNewOutput = sThousandsSeparator + sNewOutput;
+ }
+ sNewOutput = sOutput.charAt(i-1) + sNewOutput;
+ }
+ sOutput = sNewOutput;
+ }
+
+ // Prepend prefix
+ sOutput = (oConfig.prefix) ? oConfig.prefix + sOutput : sOutput;
+
+ // Append suffix
+ sOutput = (oConfig.suffix) ? sOutput + oConfig.suffix : sOutput;
+
+ return sOutput;
+ }
+ // Still not a Number, just return unaltered
+ else {
+ return nData;
+ }
+ }
+ };
+
+
+
+/****************************************************************************/
+/****************************************************************************/
+/****************************************************************************/
+
+(function () {
+
+var xPad=function (x, pad, r)
+{
+ if(typeof r === 'undefined')
+ {
+ r=10;
+ }
+ for( ; parseInt(x, 10)<r && r>1; r/=10) {
+ x = pad.toString() + x;
+ }
+ return x.toString();
+};
+
+
+/**
+ * The static Date class provides helper functions to deal with data of type Date.
+ *
+ * @namespace YAHOO.util
+ * @requires yahoo
+ * @class Date
+ * @static
+ */
+ var Dt = {
+ formats: {
+ a: function (d, l) { return l.a[d.getDay()]; },
+ A: function (d, l) { return l.A[d.getDay()]; },
+ b: function (d, l) { return l.b[d.getMonth()]; },
+ B: function (d, l) { return l.B[d.getMonth()]; },
+ C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
+ d: ['getDate', '0'],
+ e: ['getDate', ' '],
+ g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
+ G: function (d) {
+ var y = d.getFullYear();
+ var V = parseInt(Dt.formats.V(d), 10);
+ var W = parseInt(Dt.formats.W(d), 10);
+
+ if(W > V) {
+ y++;
+ } else if(W===0 && V>=52) {
+ y--;
+ }
+
+ return y;
+ },
+ H: ['getHours', '0'],
+ I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
+ j: function (d) {
+ var gmd_1 = new Date('' + d.getFullYear() + '/1/1 GMT');
+ var gmdate = new Date('' + d.getFullYear() + '/' + (d.getMonth()+1) + '/' + d.getDate() + ' GMT');
+ var ms = gmdate - gmd_1;
+ var doy = parseInt(ms/60000/60/24, 10)+1;
+ return xPad(doy, 0, 100);
+ },
+ k: ['getHours', ' '],
+ l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, ' '); },
+ m: function (d) { return xPad(d.getMonth()+1, 0); },
+ M: ['getMinutes', '0'],
+ p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
+ P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
+ s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
+ S: ['getSeconds', '0'],
+ u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
+ U: function (d) {
+ var doy = parseInt(Dt.formats.j(d), 10);
+ var rdow = 6-d.getDay();
+ var woy = parseInt((doy+rdow)/7, 10);
+ return xPad(woy, 0);
+ },
+ V: function (d) {
+ var woy = parseInt(Dt.formats.W(d), 10);
+ var dow1_1 = (new Date('' + d.getFullYear() + '/1/1')).getDay();
+ // First week is 01 and not 00 as in the case of %U and %W,
+ // so we add 1 to the final result except if day 1 of the year
+ // is a Monday (then %W returns 01).
+ // We also need to subtract 1 if the day 1 of the year is
+ // Friday-Sunday, so the resulting equation becomes:
+ var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
+ if(idow === 53 && (new Date('' + d.getFullYear() + '/12/31')).getDay() < 4)
+ {
+ idow = 1;
+ }
+ else if(idow === 0)
+ {
+ idow = Dt.formats.V(new Date('' + (d.getFullYear()-1) + '/12/31'));
+ }
+
+ return xPad(idow, 0);
+ },
+ w: 'getDay',
+ W: function (d) {
+ var doy = parseInt(Dt.formats.j(d), 10);
+ var rdow = 7-Dt.formats.u(d);
+ var woy = parseInt((doy+rdow)/7, 10);
+ return xPad(woy, 0, 10);
+ },
+ y: function (d) { return xPad(d.getFullYear()%100, 0); },
+ Y: 'getFullYear',
+ z: function (d) {
+ var o = d.getTimezoneOffset();
+ var H = xPad(parseInt(Math.abs(o/60), 10), 0);
+ var M = xPad(Math.abs(o%60), 0);
+ return (o>0?'-':'+') + H + M;
+ },
+ Z: function (d) {
+ var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, '$2').replace(/[a-z ]/g, '');
+ if(tz.length > 4) {
+ tz = Dt.formats.z(d);
+ }
+ return tz;
+ },
+ '%': function (d) { return '%'; }
+ },
+
+ aggregates: {
+ c: 'locale',
+ D: '%m/%d/%y',
+ F: '%Y-%m-%d',
+ h: '%b',
+ n: '\n',
+ r: 'locale',
+ R: '%H:%M',
+ t: '\t',
+ T: '%H:%M:%S',
+ x: 'locale',
+ X: 'locale'
+ //'+': '%a %b %e %T %Z %Y'
+ },
+
+ /**
+ * Takes a native JavaScript Date and formats to string for display to user.
+ *
+ * @method format
+ * @param oDate {Date} Date.
+ * @param oConfig {Object} (Optional) Object literal of configuration values:
+ * <dl>
+ * <dt>format <String></dt>
+ * <dd>
+ * <p>
+ * Any strftime string is supported, such as "%I:%M:%S %p". strftime has several format specifiers defined by the Open group at
+ * <a href="http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html">http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html</a>
+ * </p>
+ * <p>
+ * PHP added a few of its own, defined at <a href="http://www.php.net/strftime">http://www.php.net/strftime</a>
+ * </p>
+ * <p>
+ * This javascript implementation supports all the PHP specifiers and a few more. The full list is below:
+ * </p>
+ * <dl>
+ * <dt>%a</dt> <dd>abbreviated weekday name according to the current locale</dd>
+ * <dt>%A</dt> <dd>full weekday name according to the current locale</dd>
+ * <dt>%b</dt> <dd>abbreviated month name according to the current locale</dd>
+ * <dt>%B</dt> <dd>full month name according to the current locale</dd>
+ * <dt>%c</dt> <dd>preferred date and time representation for the current locale</dd>
+ * <dt>%C</dt> <dd>century number (the year divided by 100 and truncated to an integer, range 00 to 99)</dd>
+ * <dt>%d</dt> <dd>day of the month as a decimal number (range 01 to 31)</dd>
+ * <dt>%D</dt> <dd>same as %m/%d/%y</dd>
+ * <dt>%e</dt> <dd>day of the month as a decimal number, a single digit is preceded by a space (range ' 1' to '31')</dd>
+ * <dt>%F</dt> <dd>same as %Y-%m-%d (ISO 8601 date format)</dd>
+ * <dt>%g</dt> <dd>like %G, but without the century</dd>
+ * <dt>%G</dt> <dd>The 4-digit year corresponding to the ISO week number</dd>
+ * <dt>%h</dt> <dd>same as %b</dd>
+ * <dt>%H</dt> <dd>hour as a decimal number using a 24-hour clock (range 00 to 23)</dd>
+ * <dt>%I</dt> <dd>hour as a decimal number using a 12-hour clock (range 01 to 12)</dd>
+ * <dt>%j</dt> <dd>day of the year as a decimal number (range 001 to 366)</dd>
+ * <dt>%k</dt> <dd>hour as a decimal number using a 24-hour clock (range 0 to 23); single digits are preceded by a blank. (See also %H.)</dd>
+ * <dt>%l</dt> <dd>hour as a decimal number using a 12-hour clock (range 1 to 12); single digits are preceded by a blank. (See also %I.) </dd>
+ * <dt>%m</dt> <dd>month as a decimal number (range 01 to 12)</dd>
+ * <dt>%M</dt> <dd>minute as a decimal number</dd>
+ * <dt>%n</dt> <dd>newline character</dd>
+ * <dt>%p</dt> <dd>either `AM' or `PM' according to the given time value, or the corresponding strings for the current locale</dd>
+ * <dt>%P</dt> <dd>like %p, but lower case</dd>
+ * <dt>%r</dt> <dd>time in a.m. and p.m. notation equal to %I:%M:%S %p</dd>
+ * <dt>%R</dt> <dd>time in 24 hour notation equal to %H:%M</dd>
+ * <dt>%s</dt> <dd>number of seconds since the Epoch, ie, since 1970-01-01 00:00:00 UTC</dd>
+ * <dt>%S</dt> <dd>second as a decimal number</dd>
+ * <dt>%t</dt> <dd>tab character</dd>
+ * <dt>%T</dt> <dd>current time, equal to %H:%M:%S</dd>
+ * <dt>%u</dt> <dd>weekday as a decimal number [1,7], with 1 representing Monday</dd>
+ * <dt>%U</dt> <dd>week number of the current year as a decimal number, starting with the
+ * first Sunday as the first day of the first week</dd>
+ * <dt>%V</dt> <dd>The ISO 8601:1988 week number of the current year as a decimal number,
+ * range 01 to 53, where week 1 is the first week that has at least 4 days
+ * in the current year, and with Monday as the first day of the week.</dd>
+ * <dt>%w</dt> <dd>day of the week as a decimal, Sunday being 0</dd>
+ * <dt>%W</dt> <dd>week number of the current year as a decimal number, starting with the
+ * first Monday as the first day of the first week</dd>
+ * <dt>%x</dt> <dd>preferred date representation for the current locale without the time</dd>
+ * <dt>%X</dt> <dd>preferred time representation for the current locale without the date</dd>
+ * <dt>%y</dt> <dd>year as a decimal number without a century (range 00 to 99)</dd>
+ * <dt>%Y</dt> <dd>year as a decimal number including the century</dd>
+ * <dt>%z</dt> <dd>numerical time zone representation</dd>
+ * <dt>%Z</dt> <dd>time zone name or abbreviation</dd>
+ * <dt>%%</dt> <dd>a literal `%' character</dd>
+ * </dl>
+ * </dd>
+ * </dl>
+ * @param sLocale {String} (Optional) The locale to use when displaying days of week,
+ * months of the year, and other locale specific strings. The following locales are
+ * built in:
+ * <dl>
+ * <dt>en</dt>
+ * <dd>English</dd>
+ * <dt>en-US</dt>
+ * <dd>US English</dd>
+ * <dt>en-GB</dt>
+ * <dd>British English</dd>
+ * <dt>en-AU</dt>
+ * <dd>Australian English (identical to British English)</dd>
+ * </dl>
+ * More locales may be added by subclassing of YAHOO.util.DateLocale.
+ * See YAHOO.util.DateLocale for more information.
+ * @return {String} Formatted date for display.
+ * @sa YAHOO.util.DateLocale
+ */
+ format : function (oDate, oConfig, sLocale) {
+ oConfig = oConfig || {};
+
+ if(!(oDate instanceof Date)) {
+ return YAHOO.lang.isValue(oDate) ? oDate : "";
+ }
+
+ var format = oConfig.format || "%m/%d/%Y";
+
+ // Be backwards compatible, support strings that are
+ // exactly equal to YYYY/MM/DD, DD/MM/YYYY and MM/DD/YYYY
+ if(format === 'YYYY/MM/DD') {
+ format = '%Y/%m/%d';
+ } else if(format === 'DD/MM/YYYY') {
+ format = '%d/%m/%Y';
+ } else if(format === 'MM/DD/YYYY') {
+ format = '%m/%d/%Y';
+ }
+ // end backwards compatibility block
+
+ sLocale = sLocale || "en";
+
+ // Make sure we have a definition for the requested locale, or default to en.
+ if(!(sLocale in YAHOO.util.DateLocale)) {
+ if(sLocale.replace(/-[a-zA-Z]+$/, '') in YAHOO.util.DateLocale) {
+ sLocale = sLocale.replace(/-[a-zA-Z]+$/, '');
+ } else {
+ sLocale = "en";
+ }
+ }
+
+ var aLocale = YAHOO.util.DateLocale[sLocale];
+
+ var replace_aggs = function (m0, m1) {
+ var f = Dt.aggregates[m1];
+ return (f === 'locale' ? aLocale[m1] : f);
+ };
+
+ var replace_formats = function (m0, m1) {
+ var f = Dt.formats[m1];
+ if(typeof f === 'string') { // string => built in date function
+ return oDate[f]();
+ } else if(typeof f === 'function') { // function => our own function
+ return f.call(oDate, oDate, aLocale);
+ } else if(typeof f === 'object' && typeof f[0] === 'string') { // built in function with padding
+ return xPad(oDate[f[0]](), f[1]);
+ } else {
+ return m1;
+ }
+ };
+
+ // First replace aggregates (run in a loop because an agg may be made up of other aggs)
+ while(format.match(/%[cDFhnrRtTxX]/)) {
+ format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
+ }
+
+ // Now replace formats (do not run in a loop otherwise %%a will be replace with the value of %a)
+ var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);
+
+ replace_aggs = replace_formats = undefined;
+
+ return str;
+ }
+ };
+
+ YAHOO.namespace("YAHOO.util");
+ YAHOO.util.Date = Dt;
+
+/**
+ * The DateLocale class is a container and base class for all
+ * localised date strings used by YAHOO.util.Date. It is used
+ * internally, but may be extended to provide new date localisations.
+ *
+ * To create your own DateLocale, follow these steps:
+ * <ol>
+ * <li>Find an existing locale that matches closely with your needs</li>
+ * <li>Use this as your base class. Use YAHOO.util.DateLocale if nothing
+ * matches.</li>
+ * <li>Create your own class as an extension of the base class using
+ * YAHOO.lang.merge, and add your own localisations where needed.</li>
+ * </ol>
+ * See the YAHOO.util.DateLocale['en-US'] and YAHOO.util.DateLocale['en-GB']
+ * classes which extend YAHOO.util.DateLocale['en'].
+ *
+ * For example, to implement locales for French french and Canadian french,
+ * we would do the following:
+ * <ol>
+ * <li>For French french, we have no existing similar locale, so use
+ * YAHOO.util.DateLocale as the base, and extend it:
+ * <pre>
+ * YAHOO.util.DateLocale['fr'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {
+ * a: ['dim', 'lun', 'mar', 'mer', 'jeu', 'ven', 'sam'],
+ * A: ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi'],
+ * b: ['jan', 'fév', 'mar', 'avr', 'mai', 'jun', 'jui', 'aoû', 'sep', 'oct', 'nov', 'déc'],
+ * B: ['janvier', 'février', 'mars', 'avril', 'mai', 'juin', 'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
+ * c: '%a %d %b %Y %T %Z',
+ * p: ['', ''],
+ * P: ['', ''],
+ * x: '%d.%m.%Y',
+ * X: '%T'
+ * });
+ * </pre>
+ * </li>
+ * <li>For Canadian french, we start with French french and change the meaning of \%x:
+ * <pre>
+ * YAHOO.util.DateLocale['fr-CA'] = YAHOO.lang.merge(YAHOO.util.DateLocale['fr'], {
+ * x: '%Y-%m-%d'
+ * });
+ * </pre>
+ * </li>
+ * </ol>
+ *
+ * With that, you can use your new locales:
+ * <pre>
+ * var d = new Date("2008/04/22");
+ * YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr");
+ * </pre>
+ * will return:
+ * <pre>
+ * mardi, 22 avril == 22.04.2008
+ * </pre>
+ * And
+ * <pre>
+ * YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr-CA");
+ * </pre>
+ * Will return:
+ * <pre>
+ * mardi, 22 avril == 2008-04-22
+ * </pre>
+ * @namespace YAHOO.util
+ * @requires yahoo
+ * @class DateLocale
+ */
+ YAHOO.util.DateLocale = {
+ a: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
+ A: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
+ b: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
+ B: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
+ c: '%a %d %b %Y %T %Z',
+ p: ['AM', 'PM'],
+ P: ['am', 'pm'],
+ r: '%I:%M:%S %p',
+ x: '%d/%m/%y',
+ X: '%T'
+ };
+
+ YAHOO.util.DateLocale['en'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {});
+
+ YAHOO.util.DateLocale['en-US'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
+ c: '%a %d %b %Y %I:%M:%S %p %Z',
+ x: '%m/%d/%Y',
+ X: '%I:%M:%S %p'
+ });
+
+ YAHOO.util.DateLocale['en-GB'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
+ r: '%l:%M:%S %P %Z'
+ });
+ YAHOO.util.DateLocale['en-AU'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en']);
+
+})();
+
+YAHOO.register("datasource", YAHOO.util.DataSource, {version: "2.7.0", build: "1799"});
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