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Lines 1-3067
Link Here
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/* |
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Copyright (c) 2009, Yahoo! Inc. All rights reserved. |
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Code licensed under the BSD License: |
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http://developer.yahoo.net/yui/license.txt |
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version: 2.8.0r4 |
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*/ |
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(function () { |
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|
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var lang = YAHOO.lang, |
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util = YAHOO.util, |
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Ev = util.Event; |
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|
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/** |
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* The DataSource utility provides a common configurable interface for widgets to |
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* access a variety of data, from JavaScript arrays to online database servers. |
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* |
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* @module datasource |
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* @requires yahoo, event |
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* @optional json, get, connection |
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* @title DataSource Utility |
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*/ |
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|
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/****************************************************************************/ |
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/****************************************************************************/ |
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/****************************************************************************/ |
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|
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/** |
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* Base class for the YUI DataSource utility. |
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* |
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* @namespace YAHOO.util |
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* @class YAHOO.util.DataSourceBase |
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* @constructor |
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* @param oLiveData {HTMLElement} Pointer to live data. |
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* @param oConfigs {object} (optional) Object literal of configuration values. |
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*/ |
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util.DataSourceBase = function(oLiveData, oConfigs) { |
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if(oLiveData === null || oLiveData === undefined) { |
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YAHOO.log("Could not instantiate DataSource due to invalid live database", |
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"error", this.toString()); |
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return; |
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} |
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|
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this.liveData = oLiveData; |
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this._oQueue = {interval:null, conn:null, requests:[]}; |
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this.responseSchema = {}; |
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|
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// Set any config params passed in to override defaults |
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if(oConfigs && (oConfigs.constructor == Object)) { |
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for(var sConfig in oConfigs) { |
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if(sConfig) { |
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this[sConfig] = oConfigs[sConfig]; |
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} |
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} |
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} |
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|
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// Validate and initialize public configs |
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var maxCacheEntries = this.maxCacheEntries; |
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if(!lang.isNumber(maxCacheEntries) || (maxCacheEntries < 0)) { |
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maxCacheEntries = 0; |
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} |
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|
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// Initialize interval tracker |
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this._aIntervals = []; |
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|
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///////////////////////////////////////////////////////////////////////////// |
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// |
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// Custom Events |
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// |
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///////////////////////////////////////////////////////////////////////////// |
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|
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/** |
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* Fired when a request is made to the local cache. |
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* |
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* @event cacheRequestEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("cacheRequestEvent"); |
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|
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/** |
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* Fired when data is retrieved from the local cache. |
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* |
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* @event cacheResponseEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.response {Object} The response object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("cacheResponseEvent"); |
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|
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/** |
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* Fired when a request is sent to the live data source. |
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* |
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* @event requestEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.tId {Number} Transaction ID. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("requestEvent"); |
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|
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/** |
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* Fired when live data source sends response. |
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* |
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* @event responseEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.response {Object} The raw response object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.tId {Number} Transaction ID. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("responseEvent"); |
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|
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/** |
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* Fired when response is parsed. |
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* |
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* @event responseParseEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.response {Object} The parsed response object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("responseParseEvent"); |
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|
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/** |
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* Fired when response is cached. |
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* |
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* @event responseCacheEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.response {Object} The parsed response object. |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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*/ |
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this.createEvent("responseCacheEvent"); |
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/** |
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* Fired when an error is encountered with the live data source. |
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* |
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* @event dataErrorEvent |
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* @param oArgs.request {Object} The request object. |
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* @param oArgs.response {String} The response object (if available). |
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* @param oArgs.callback {Object} The callback object. |
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* @param oArgs.caller {Object} (deprecated) Use callback.scope. |
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* @param oArgs.message {String} The error message. |
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*/ |
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this.createEvent("dataErrorEvent"); |
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|
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/** |
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* Fired when the local cache is flushed. |
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* |
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* @event cacheFlushEvent |
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*/ |
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this.createEvent("cacheFlushEvent"); |
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|
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var DS = util.DataSourceBase; |
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this._sName = "DataSource instance" + DS._nIndex; |
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DS._nIndex++; |
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YAHOO.log("DataSource initialized", "info", this.toString()); |
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}; |
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|
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var DS = util.DataSourceBase; |
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|
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lang.augmentObject(DS, { |
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|
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///////////////////////////////////////////////////////////////////////////// |
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// |
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// DataSourceBase public constants |
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// |
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///////////////////////////////////////////////////////////////////////////// |
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|
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/** |
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* Type is unknown. |
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* |
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* @property TYPE_UNKNOWN |
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* @type Number |
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* @final |
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* @default -1 |
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*/ |
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TYPE_UNKNOWN : -1, |
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|
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/** |
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* Type is a JavaScript Array. |
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* |
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* @property TYPE_JSARRAY |
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* @type Number |
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* @final |
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* @default 0 |
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*/ |
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TYPE_JSARRAY : 0, |
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|
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/** |
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* Type is a JavaScript Function. |
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* |
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* @property TYPE_JSFUNCTION |
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* @type Number |
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* @final |
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* @default 1 |
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*/ |
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TYPE_JSFUNCTION : 1, |
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|
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/** |
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* Type is hosted on a server via an XHR connection. |
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* |
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* @property TYPE_XHR |
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* @type Number |
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* @final |
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* @default 2 |
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*/ |
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TYPE_XHR : 2, |
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|
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/** |
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* Type is JSON. |
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* |
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* @property TYPE_JSON |
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* @type Number |
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* @final |
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* @default 3 |
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*/ |
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TYPE_JSON : 3, |
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|
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/** |
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* Type is XML. |
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* |
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* @property TYPE_XML |
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* @type Number |
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* @final |
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* @default 4 |
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*/ |
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TYPE_XML : 4, |
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|
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/** |
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* Type is plain text. |
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* |
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* @property TYPE_TEXT |
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* @type Number |
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* @final |
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* @default 5 |
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*/ |
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TYPE_TEXT : 5, |
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|
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/** |
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* Type is an HTML TABLE element. Data is parsed out of TR elements from all TBODY elements. |
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* |
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* @property TYPE_HTMLTABLE |
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* @type Number |
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* @final |
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* @default 6 |
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*/ |
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TYPE_HTMLTABLE : 6, |
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|
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/** |
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* Type is hosted on a server via a dynamic script node. |
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* |
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* @property TYPE_SCRIPTNODE |
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* @type Number |
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* @final |
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* @default 7 |
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*/ |
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TYPE_SCRIPTNODE : 7, |
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|
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/** |
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* Type is local. |
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* |
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* @property TYPE_LOCAL |
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* @type Number |
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* @final |
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* @default 8 |
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*/ |
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TYPE_LOCAL : 8, |
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|
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/** |
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* Error message for invalid dataresponses. |
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* |
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* @property ERROR_DATAINVALID |
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* @type String |
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* @final |
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* @default "Invalid data" |
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*/ |
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ERROR_DATAINVALID : "Invalid data", |
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|
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/** |
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* Error message for null data responses. |
| 283 |
* |
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* @property ERROR_DATANULL |
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* @type String |
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* @final |
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* @default "Null data" |
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*/ |
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ERROR_DATANULL : "Null data", |
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|
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///////////////////////////////////////////////////////////////////////////// |
| 292 |
// |
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// DataSourceBase private static properties |
| 294 |
// |
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///////////////////////////////////////////////////////////////////////////// |
| 296 |
|
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/** |
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* Internal class variable to index multiple DataSource instances. |
| 299 |
* |
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* @property DataSourceBase._nIndex |
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* @type Number |
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* @private |
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* @static |
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*/ |
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_nIndex : 0, |
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|
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/** |
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* Internal class variable to assign unique transaction IDs. |
| 309 |
* |
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* @property DataSourceBase._nTransactionId |
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* @type Number |
| 312 |
* @private |
| 313 |
* @static |
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*/ |
| 315 |
_nTransactionId : 0, |
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|
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///////////////////////////////////////////////////////////////////////////// |
| 318 |
// |
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// DataSourceBase private static methods |
| 320 |
// |
| 321 |
///////////////////////////////////////////////////////////////////////////// |
| 322 |
|
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/** |
| 324 |
* Get an XPath-specified value for a given field from an XML node or document. |
| 325 |
* |
| 326 |
* @method _getLocationValue |
| 327 |
* @param field {String | Object} Field definition. |
| 328 |
* @param context {Object} XML node or document to search within. |
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* @return {Object} Data value or null. |
| 330 |
* @static |
| 331 |
* @private |
| 332 |
*/ |
| 333 |
_getLocationValue: function(field, context) { |
| 334 |
var locator = field.locator || field.key || field, |
| 335 |
xmldoc = context.ownerDocument || context, |
| 336 |
result, res, value = null; |
| 337 |
|
| 338 |
try { |
| 339 |
// Standards mode |
| 340 |
if(!lang.isUndefined(xmldoc.evaluate)) { |
| 341 |
result = xmldoc.evaluate(locator, context, xmldoc.createNSResolver(!context.ownerDocument ? context.documentElement : context.ownerDocument.documentElement), 0, null); |
| 342 |
while(res = result.iterateNext()) { |
| 343 |
value = res.textContent; |
| 344 |
} |
| 345 |
} |
| 346 |
// IE mode |
| 347 |
else { |
| 348 |
xmldoc.setProperty("SelectionLanguage", "XPath"); |
| 349 |
result = context.selectNodes(locator)[0]; |
| 350 |
value = result.value || result.text || null; |
| 351 |
} |
| 352 |
return value; |
| 353 |
|
| 354 |
} |
| 355 |
catch(e) { |
| 356 |
} |
| 357 |
}, |
| 358 |
|
| 359 |
///////////////////////////////////////////////////////////////////////////// |
| 360 |
// |
| 361 |
// DataSourceBase public static methods |
| 362 |
// |
| 363 |
///////////////////////////////////////////////////////////////////////////// |
| 364 |
|
| 365 |
/** |
| 366 |
* Executes a configured callback. For object literal callbacks, the third |
| 367 |
* param determines whether to execute the success handler or failure handler. |
| 368 |
* |
| 369 |
* @method issueCallback |
| 370 |
* @param callback {Function|Object} the callback to execute |
| 371 |
* @param params {Array} params to be passed to the callback method |
| 372 |
* @param error {Boolean} whether an error occurred |
| 373 |
* @param scope {Object} the scope from which to execute the callback |
| 374 |
* (deprecated - use an object literal callback) |
| 375 |
* @static |
| 376 |
*/ |
| 377 |
issueCallback : function (callback,params,error,scope) { |
| 378 |
if (lang.isFunction(callback)) { |
| 379 |
callback.apply(scope, params); |
| 380 |
} else if (lang.isObject(callback)) { |
| 381 |
scope = callback.scope || scope || window; |
| 382 |
var callbackFunc = callback.success; |
| 383 |
if (error) { |
| 384 |
callbackFunc = callback.failure; |
| 385 |
} |
| 386 |
if (callbackFunc) { |
| 387 |
callbackFunc.apply(scope, params.concat([callback.argument])); |
| 388 |
} |
| 389 |
} |
| 390 |
}, |
| 391 |
|
| 392 |
/** |
| 393 |
* Converts data to type String. |
| 394 |
* |
| 395 |
* @method DataSourceBase.parseString |
| 396 |
* @param oData {String | Number | Boolean | Date | Array | Object} Data to parse. |
| 397 |
* The special values null and undefined will return null. |
| 398 |
* @return {String} A string, or null. |
| 399 |
* @static |
| 400 |
*/ |
| 401 |
parseString : function(oData) { |
| 402 |
// Special case null and undefined |
| 403 |
if(!lang.isValue(oData)) { |
| 404 |
return null; |
| 405 |
} |
| 406 |
|
| 407 |
//Convert to string |
| 408 |
var string = oData + ""; |
| 409 |
|
| 410 |
// Validate |
| 411 |
if(lang.isString(string)) { |
| 412 |
return string; |
| 413 |
} |
| 414 |
else { |
| 415 |
YAHOO.log("Could not convert data " + lang.dump(oData) + " to type String", "warn", this.toString()); |
| 416 |
return null; |
| 417 |
} |
| 418 |
}, |
| 419 |
|
| 420 |
/** |
| 421 |
* Converts data to type Number. |
| 422 |
* |
| 423 |
* @method DataSourceBase.parseNumber |
| 424 |
* @param oData {String | Number | Boolean} Data to convert. Note, the following |
| 425 |
* values return as null: null, undefined, NaN, "". |
| 426 |
* @return {Number} A number, or null. |
| 427 |
* @static |
| 428 |
*/ |
| 429 |
parseNumber : function(oData) { |
| 430 |
if(!lang.isValue(oData) || (oData === "")) { |
| 431 |
return null; |
| 432 |
} |
| 433 |
|
| 434 |
//Convert to number |
| 435 |
var number = oData * 1; |
| 436 |
|
| 437 |
// Validate |
| 438 |
if(lang.isNumber(number)) { |
| 439 |
return number; |
| 440 |
} |
| 441 |
else { |
| 442 |
YAHOO.log("Could not convert data " + lang.dump(oData) + " to type Number", "warn", this.toString()); |
| 443 |
return null; |
| 444 |
} |
| 445 |
}, |
| 446 |
// Backward compatibility |
| 447 |
convertNumber : function(oData) { |
| 448 |
YAHOO.log("The method YAHOO.util.DataSourceBase.convertNumber() has been" + |
| 449 |
" deprecated in favor of YAHOO.util.DataSourceBase.parseNumber()", "warn", |
| 450 |
this.toString()); |
| 451 |
return DS.parseNumber(oData); |
| 452 |
}, |
| 453 |
|
| 454 |
/** |
| 455 |
* Converts data to type Date. |
| 456 |
* |
| 457 |
* @method DataSourceBase.parseDate |
| 458 |
* @param oData {Date | String | Number} Data to convert. |
| 459 |
* @return {Date} A Date instance. |
| 460 |
* @static |
| 461 |
*/ |
| 462 |
parseDate : function(oData) { |
| 463 |
var date = null; |
| 464 |
|
| 465 |
//Convert to date |
| 466 |
if(!(oData instanceof Date)) { |
| 467 |
date = new Date(oData); |
| 468 |
} |
| 469 |
else { |
| 470 |
return oData; |
| 471 |
} |
| 472 |
|
| 473 |
// Validate |
| 474 |
if(date instanceof Date) { |
| 475 |
return date; |
| 476 |
} |
| 477 |
else { |
| 478 |
YAHOO.log("Could not convert data " + lang.dump(oData) + " to type Date", "warn", this.toString()); |
| 479 |
return null; |
| 480 |
} |
| 481 |
}, |
| 482 |
// Backward compatibility |
| 483 |
convertDate : function(oData) { |
| 484 |
YAHOO.log("The method YAHOO.util.DataSourceBase.convertDate() has been" + |
| 485 |
" deprecated in favor of YAHOO.util.DataSourceBase.parseDate()", "warn", |
| 486 |
this.toString()); |
| 487 |
return DS.parseDate(oData); |
| 488 |
} |
| 489 |
|
| 490 |
}); |
| 491 |
|
| 492 |
// Done in separate step so referenced functions are defined. |
| 493 |
/** |
| 494 |
* Data parsing functions. |
| 495 |
* @property DataSource.Parser |
| 496 |
* @type Object |
| 497 |
* @static |
| 498 |
*/ |
| 499 |
DS.Parser = { |
| 500 |
string : DS.parseString, |
| 501 |
number : DS.parseNumber, |
| 502 |
date : DS.parseDate |
| 503 |
}; |
| 504 |
|
| 505 |
// Prototype properties and methods |
| 506 |
DS.prototype = { |
| 507 |
|
| 508 |
///////////////////////////////////////////////////////////////////////////// |
| 509 |
// |
| 510 |
// DataSourceBase private properties |
| 511 |
// |
| 512 |
///////////////////////////////////////////////////////////////////////////// |
| 513 |
|
| 514 |
/** |
| 515 |
* Name of DataSource instance. |
| 516 |
* |
| 517 |
* @property _sName |
| 518 |
* @type String |
| 519 |
* @private |
| 520 |
*/ |
| 521 |
_sName : null, |
| 522 |
|
| 523 |
/** |
| 524 |
* Local cache of data result object literals indexed chronologically. |
| 525 |
* |
| 526 |
* @property _aCache |
| 527 |
* @type Object[] |
| 528 |
* @private |
| 529 |
*/ |
| 530 |
_aCache : null, |
| 531 |
|
| 532 |
/** |
| 533 |
* Local queue of request connections, enabled if queue needs to be managed. |
| 534 |
* |
| 535 |
* @property _oQueue |
| 536 |
* @type Object |
| 537 |
* @private |
| 538 |
*/ |
| 539 |
_oQueue : null, |
| 540 |
|
| 541 |
/** |
| 542 |
* Array of polling interval IDs that have been enabled, needed to clear all intervals. |
| 543 |
* |
| 544 |
* @property _aIntervals |
| 545 |
* @type Array |
| 546 |
* @private |
| 547 |
*/ |
| 548 |
_aIntervals : null, |
| 549 |
|
| 550 |
///////////////////////////////////////////////////////////////////////////// |
| 551 |
// |
| 552 |
// DataSourceBase public properties |
| 553 |
// |
| 554 |
///////////////////////////////////////////////////////////////////////////// |
| 555 |
|
| 556 |
/** |
| 557 |
* Max size of the local cache. Set to 0 to turn off caching. Caching is |
| 558 |
* useful to reduce the number of server connections. Recommended only for data |
| 559 |
* sources that return comprehensive results for queries or when stale data is |
| 560 |
* not an issue. |
| 561 |
* |
| 562 |
* @property maxCacheEntries |
| 563 |
* @type Number |
| 564 |
* @default 0 |
| 565 |
*/ |
| 566 |
maxCacheEntries : 0, |
| 567 |
|
| 568 |
/** |
| 569 |
* Pointer to live database. |
| 570 |
* |
| 571 |
* @property liveData |
| 572 |
* @type Object |
| 573 |
*/ |
| 574 |
liveData : null, |
| 575 |
|
| 576 |
/** |
| 577 |
* Where the live data is held: |
| 578 |
* |
| 579 |
* <dl> |
| 580 |
* <dt>TYPE_UNKNOWN</dt> |
| 581 |
* <dt>TYPE_LOCAL</dt> |
| 582 |
* <dt>TYPE_XHR</dt> |
| 583 |
* <dt>TYPE_SCRIPTNODE</dt> |
| 584 |
* <dt>TYPE_JSFUNCTION</dt> |
| 585 |
* </dl> |
| 586 |
* |
| 587 |
* @property dataType |
| 588 |
* @type Number |
| 589 |
* @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN |
| 590 |
* |
| 591 |
*/ |
| 592 |
dataType : DS.TYPE_UNKNOWN, |
| 593 |
|
| 594 |
/** |
| 595 |
* Format of response: |
| 596 |
* |
| 597 |
* <dl> |
| 598 |
* <dt>TYPE_UNKNOWN</dt> |
| 599 |
* <dt>TYPE_JSARRAY</dt> |
| 600 |
* <dt>TYPE_JSON</dt> |
| 601 |
* <dt>TYPE_XML</dt> |
| 602 |
* <dt>TYPE_TEXT</dt> |
| 603 |
* <dt>TYPE_HTMLTABLE</dt> |
| 604 |
* </dl> |
| 605 |
* |
| 606 |
* @property responseType |
| 607 |
* @type Number |
| 608 |
* @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN |
| 609 |
*/ |
| 610 |
responseType : DS.TYPE_UNKNOWN, |
| 611 |
|
| 612 |
/** |
| 613 |
* Response schema object literal takes a combination of the following properties: |
| 614 |
* |
| 615 |
* <dl> |
| 616 |
* <dt>resultsList</dt> <dd>Pointer to array of tabular data</dd> |
| 617 |
* <dt>resultNode</dt> <dd>Pointer to node name of row data (XML data only)</dd> |
| 618 |
* <dt>recordDelim</dt> <dd>Record delimiter (text data only)</dd> |
| 619 |
* <dt>fieldDelim</dt> <dd>Field delimiter (text data only)</dd> |
| 620 |
* <dt>fields</dt> <dd>Array of field names (aka keys), or array of object literals |
| 621 |
* such as: {key:"fieldname",parser:YAHOO.util.DataSourceBase.parseDate}</dd> |
| 622 |
* <dt>metaFields</dt> <dd>Object literal of keys to include in the oParsedResponse.meta collection</dd> |
| 623 |
* <dt>metaNode</dt> <dd>Name of the node under which to search for meta information in XML response data</dd> |
| 624 |
* </dl> |
| 625 |
* |
| 626 |
* @property responseSchema |
| 627 |
* @type Object |
| 628 |
*/ |
| 629 |
responseSchema : null, |
| 630 |
|
| 631 |
/** |
| 632 |
* Additional arguments passed to the JSON parse routine. The JSON string |
| 633 |
* is the assumed first argument (where applicable). This property is not |
| 634 |
* set by default, but the parse methods will use it if present. |
| 635 |
* |
| 636 |
* @property parseJSONArgs |
| 637 |
* @type {MIXED|Array} If an Array, contents are used as individual arguments. |
| 638 |
* Otherwise, value is used as an additional argument. |
| 639 |
*/ |
| 640 |
// property intentionally undefined |
| 641 |
|
| 642 |
/** |
| 643 |
* When working with XML data, setting this property to true enables support for |
| 644 |
* XPath-syntaxed locators in schema definitions. |
| 645 |
* |
| 646 |
* @property useXPath |
| 647 |
* @type Boolean |
| 648 |
* @default false |
| 649 |
*/ |
| 650 |
useXPath : false, |
| 651 |
|
| 652 |
///////////////////////////////////////////////////////////////////////////// |
| 653 |
// |
| 654 |
// DataSourceBase public methods |
| 655 |
// |
| 656 |
///////////////////////////////////////////////////////////////////////////// |
| 657 |
|
| 658 |
/** |
| 659 |
* Public accessor to the unique name of the DataSource instance. |
| 660 |
* |
| 661 |
* @method toString |
| 662 |
* @return {String} Unique name of the DataSource instance. |
| 663 |
*/ |
| 664 |
toString : function() { |
| 665 |
return this._sName; |
| 666 |
}, |
| 667 |
|
| 668 |
/** |
| 669 |
* Overridable method passes request to cache and returns cached response if any, |
| 670 |
* refreshing the hit in the cache as the newest item. Returns null if there is |
| 671 |
* no cache hit. |
| 672 |
* |
| 673 |
* @method getCachedResponse |
| 674 |
* @param oRequest {Object} Request object. |
| 675 |
* @param oCallback {Object} Callback object. |
| 676 |
* @param oCaller {Object} (deprecated) Use callback object. |
| 677 |
* @return {Object} Cached response object or null. |
| 678 |
*/ |
| 679 |
getCachedResponse : function(oRequest, oCallback, oCaller) { |
| 680 |
var aCache = this._aCache; |
| 681 |
|
| 682 |
// If cache is enabled... |
| 683 |
if(this.maxCacheEntries > 0) { |
| 684 |
// Initialize local cache |
| 685 |
if(!aCache) { |
| 686 |
this._aCache = []; |
| 687 |
YAHOO.log("Cache initialized", "info", this.toString()); |
| 688 |
} |
| 689 |
// Look in local cache |
| 690 |
else { |
| 691 |
var nCacheLength = aCache.length; |
| 692 |
if(nCacheLength > 0) { |
| 693 |
var oResponse = null; |
| 694 |
this.fireEvent("cacheRequestEvent", {request:oRequest,callback:oCallback,caller:oCaller}); |
| 695 |
|
| 696 |
// Loop through each cached element |
| 697 |
for(var i = nCacheLength-1; i >= 0; i--) { |
| 698 |
var oCacheElem = aCache[i]; |
| 699 |
|
| 700 |
// Defer cache hit logic to a public overridable method |
| 701 |
if(this.isCacheHit(oRequest,oCacheElem.request)) { |
| 702 |
// The cache returned a hit! |
| 703 |
// Grab the cached response |
| 704 |
oResponse = oCacheElem.response; |
| 705 |
this.fireEvent("cacheResponseEvent", {request:oRequest,response:oResponse,callback:oCallback,caller:oCaller}); |
| 706 |
|
| 707 |
// Refresh the position of the cache hit |
| 708 |
if(i < nCacheLength-1) { |
| 709 |
// Remove element from its original location |
| 710 |
aCache.splice(i,1); |
| 711 |
// Add as newest |
| 712 |
this.addToCache(oRequest, oResponse); |
| 713 |
YAHOO.log("Refreshed cache position of the response for \"" + oRequest + "\"", "info", this.toString()); |
| 714 |
} |
| 715 |
|
| 716 |
// Add a cache flag |
| 717 |
oResponse.cached = true; |
| 718 |
break; |
| 719 |
} |
| 720 |
} |
| 721 |
YAHOO.log("The cached response for \"" + lang.dump(oRequest) + |
| 722 |
"\" is " + lang.dump(oResponse), "info", this.toString()); |
| 723 |
return oResponse; |
| 724 |
} |
| 725 |
} |
| 726 |
} |
| 727 |
else if(aCache) { |
| 728 |
this._aCache = null; |
| 729 |
YAHOO.log("Cache destroyed", "info", this.toString()); |
| 730 |
} |
| 731 |
return null; |
| 732 |
}, |
| 733 |
|
| 734 |
/** |
| 735 |
* Default overridable method matches given request to given cached request. |
| 736 |
* Returns true if is a hit, returns false otherwise. Implementers should |
| 737 |
* override this method to customize the cache-matching algorithm. |
| 738 |
* |
| 739 |
* @method isCacheHit |
| 740 |
* @param oRequest {Object} Request object. |
| 741 |
* @param oCachedRequest {Object} Cached request object. |
| 742 |
* @return {Boolean} True if given request matches cached request, false otherwise. |
| 743 |
*/ |
| 744 |
isCacheHit : function(oRequest, oCachedRequest) { |
| 745 |
return (oRequest === oCachedRequest); |
| 746 |
}, |
| 747 |
|
| 748 |
/** |
| 749 |
* Adds a new item to the cache. If cache is full, evicts the stalest item |
| 750 |
* before adding the new item. |
| 751 |
* |
| 752 |
* @method addToCache |
| 753 |
* @param oRequest {Object} Request object. |
| 754 |
* @param oResponse {Object} Response object to cache. |
| 755 |
*/ |
| 756 |
addToCache : function(oRequest, oResponse) { |
| 757 |
var aCache = this._aCache; |
| 758 |
if(!aCache) { |
| 759 |
return; |
| 760 |
} |
| 761 |
|
| 762 |
// If the cache is full, make room by removing stalest element (index=0) |
| 763 |
while(aCache.length >= this.maxCacheEntries) { |
| 764 |
aCache.shift(); |
| 765 |
} |
| 766 |
|
| 767 |
// Add to cache in the newest position, at the end of the array |
| 768 |
var oCacheElem = {request:oRequest,response:oResponse}; |
| 769 |
aCache[aCache.length] = oCacheElem; |
| 770 |
this.fireEvent("responseCacheEvent", {request:oRequest,response:oResponse}); |
| 771 |
YAHOO.log("Cached the response for \"" + oRequest + "\"", "info", this.toString()); |
| 772 |
}, |
| 773 |
|
| 774 |
/** |
| 775 |
* Flushes cache. |
| 776 |
* |
| 777 |
* @method flushCache |
| 778 |
*/ |
| 779 |
flushCache : function() { |
| 780 |
if(this._aCache) { |
| 781 |
this._aCache = []; |
| 782 |
this.fireEvent("cacheFlushEvent"); |
| 783 |
YAHOO.log("Flushed the cache", "info", this.toString()); |
| 784 |
} |
| 785 |
}, |
| 786 |
|
| 787 |
/** |
| 788 |
* Sets up a polling mechanism to send requests at set intervals and forward |
| 789 |
* responses to given callback. |
| 790 |
* |
| 791 |
* @method setInterval |
| 792 |
* @param nMsec {Number} Length of interval in milliseconds. |
| 793 |
* @param oRequest {Object} Request object. |
| 794 |
* @param oCallback {Function} Handler function to receive the response. |
| 795 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 796 |
* @return {Number} Interval ID. |
| 797 |
*/ |
| 798 |
setInterval : function(nMsec, oRequest, oCallback, oCaller) { |
| 799 |
if(lang.isNumber(nMsec) && (nMsec >= 0)) { |
| 800 |
YAHOO.log("Enabling polling to live data for \"" + oRequest + "\" at interval " + nMsec, "info", this.toString()); |
| 801 |
var oSelf = this; |
| 802 |
var nId = setInterval(function() { |
| 803 |
oSelf.makeConnection(oRequest, oCallback, oCaller); |
| 804 |
}, nMsec); |
| 805 |
this._aIntervals.push(nId); |
| 806 |
return nId; |
| 807 |
} |
| 808 |
else { |
| 809 |
YAHOO.log("Could not enable polling to live data for \"" + oRequest + "\" at interval " + nMsec, "info", this.toString()); |
| 810 |
} |
| 811 |
}, |
| 812 |
|
| 813 |
/** |
| 814 |
* Disables polling mechanism associated with the given interval ID. |
| 815 |
* |
| 816 |
* @method clearInterval |
| 817 |
* @param nId {Number} Interval ID. |
| 818 |
*/ |
| 819 |
clearInterval : function(nId) { |
| 820 |
// Remove from tracker if there |
| 821 |
var tracker = this._aIntervals || []; |
| 822 |
for(var i=tracker.length-1; i>-1; i--) { |
| 823 |
if(tracker[i] === nId) { |
| 824 |
tracker.splice(i,1); |
| 825 |
clearInterval(nId); |
| 826 |
} |
| 827 |
} |
| 828 |
}, |
| 829 |
|
| 830 |
/** |
| 831 |
* Disables all known polling intervals. |
| 832 |
* |
| 833 |
* @method clearAllIntervals |
| 834 |
*/ |
| 835 |
clearAllIntervals : function() { |
| 836 |
var tracker = this._aIntervals || []; |
| 837 |
for(var i=tracker.length-1; i>-1; i--) { |
| 838 |
clearInterval(tracker[i]); |
| 839 |
} |
| 840 |
tracker = []; |
| 841 |
}, |
| 842 |
|
| 843 |
/** |
| 844 |
* First looks for cached response, then sends request to live data. The |
| 845 |
* following arguments are passed to the callback function: |
| 846 |
* <dl> |
| 847 |
* <dt><code>oRequest</code></dt> |
| 848 |
* <dd>The same value that was passed in as the first argument to sendRequest.</dd> |
| 849 |
* <dt><code>oParsedResponse</code></dt> |
| 850 |
* <dd>An object literal containing the following properties: |
| 851 |
* <dl> |
| 852 |
* <dt><code>tId</code></dt> |
| 853 |
* <dd>Unique transaction ID number.</dd> |
| 854 |
* <dt><code>results</code></dt> |
| 855 |
* <dd>Schema-parsed data results.</dd> |
| 856 |
* <dt><code>error</code></dt> |
| 857 |
* <dd>True in cases of data error.</dd> |
| 858 |
* <dt><code>cached</code></dt> |
| 859 |
* <dd>True when response is returned from DataSource cache.</dd> |
| 860 |
* <dt><code>meta</code></dt> |
| 861 |
* <dd>Schema-parsed meta data.</dd> |
| 862 |
* </dl> |
| 863 |
* <dt><code>oPayload</code></dt> |
| 864 |
* <dd>The same value as was passed in as <code>argument</code> in the oCallback object literal.</dd> |
| 865 |
* </dl> |
| 866 |
* |
| 867 |
* @method sendRequest |
| 868 |
* @param oRequest {Object} Request object. |
| 869 |
* @param oCallback {Object} An object literal with the following properties: |
| 870 |
* <dl> |
| 871 |
* <dt><code>success</code></dt> |
| 872 |
* <dd>The function to call when the data is ready.</dd> |
| 873 |
* <dt><code>failure</code></dt> |
| 874 |
* <dd>The function to call upon a response failure condition.</dd> |
| 875 |
* <dt><code>scope</code></dt> |
| 876 |
* <dd>The object to serve as the scope for the success and failure handlers.</dd> |
| 877 |
* <dt><code>argument</code></dt> |
| 878 |
* <dd>Arbitrary data that will be passed back to the success and failure handlers.</dd> |
| 879 |
* </dl> |
| 880 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 881 |
* @return {Number} Transaction ID, or null if response found in cache. |
| 882 |
*/ |
| 883 |
sendRequest : function(oRequest, oCallback, oCaller) { |
| 884 |
// First look in cache |
| 885 |
var oCachedResponse = this.getCachedResponse(oRequest, oCallback, oCaller); |
| 886 |
if(oCachedResponse) { |
| 887 |
DS.issueCallback(oCallback,[oRequest,oCachedResponse],false,oCaller); |
| 888 |
return null; |
| 889 |
} |
| 890 |
|
| 891 |
|
| 892 |
// Not in cache, so forward request to live data |
| 893 |
YAHOO.log("Making connection to live data for \"" + oRequest + "\"", "info", this.toString()); |
| 894 |
return this.makeConnection(oRequest, oCallback, oCaller); |
| 895 |
}, |
| 896 |
|
| 897 |
/** |
| 898 |
* Overridable default method generates a unique transaction ID and passes |
| 899 |
* the live data reference directly to the handleResponse function. This |
| 900 |
* method should be implemented by subclasses to achieve more complex behavior |
| 901 |
* or to access remote data. |
| 902 |
* |
| 903 |
* @method makeConnection |
| 904 |
* @param oRequest {Object} Request object. |
| 905 |
* @param oCallback {Object} Callback object literal. |
| 906 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 907 |
* @return {Number} Transaction ID. |
| 908 |
*/ |
| 909 |
makeConnection : function(oRequest, oCallback, oCaller) { |
| 910 |
var tId = DS._nTransactionId++; |
| 911 |
this.fireEvent("requestEvent", {tId:tId, request:oRequest,callback:oCallback,caller:oCaller}); |
| 912 |
|
| 913 |
/* accounts for the following cases: |
| 914 |
YAHOO.util.DataSourceBase.TYPE_UNKNOWN |
| 915 |
YAHOO.util.DataSourceBase.TYPE_JSARRAY |
| 916 |
YAHOO.util.DataSourceBase.TYPE_JSON |
| 917 |
YAHOO.util.DataSourceBase.TYPE_HTMLTABLE |
| 918 |
YAHOO.util.DataSourceBase.TYPE_XML |
| 919 |
YAHOO.util.DataSourceBase.TYPE_TEXT |
| 920 |
*/ |
| 921 |
var oRawResponse = this.liveData; |
| 922 |
|
| 923 |
this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId); |
| 924 |
return tId; |
| 925 |
}, |
| 926 |
|
| 927 |
/** |
| 928 |
* Receives raw data response and type converts to XML, JSON, etc as necessary. |
| 929 |
* Forwards oFullResponse to appropriate parsing function to get turned into |
| 930 |
* oParsedResponse. Calls doBeforeCallback() and adds oParsedResponse to |
| 931 |
* the cache when appropriate before calling issueCallback(). |
| 932 |
* |
| 933 |
* The oParsedResponse object literal has the following properties: |
| 934 |
* <dl> |
| 935 |
* <dd><dt>tId {Number}</dt> Unique transaction ID</dd> |
| 936 |
* <dd><dt>results {Array}</dt> Array of parsed data results</dd> |
| 937 |
* <dd><dt>meta {Object}</dt> Object literal of meta values</dd> |
| 938 |
* <dd><dt>error {Boolean}</dt> (optional) True if there was an error</dd> |
| 939 |
* <dd><dt>cached {Boolean}</dt> (optional) True if response was cached</dd> |
| 940 |
* </dl> |
| 941 |
* |
| 942 |
* @method handleResponse |
| 943 |
* @param oRequest {Object} Request object |
| 944 |
* @param oRawResponse {Object} The raw response from the live database. |
| 945 |
* @param oCallback {Object} Callback object literal. |
| 946 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 947 |
* @param tId {Number} Transaction ID. |
| 948 |
*/ |
| 949 |
handleResponse : function(oRequest, oRawResponse, oCallback, oCaller, tId) { |
| 950 |
this.fireEvent("responseEvent", {tId:tId, request:oRequest, response:oRawResponse, |
| 951 |
callback:oCallback, caller:oCaller}); |
| 952 |
YAHOO.log("Received live data response for \"" + oRequest + "\"", "info", this.toString()); |
| 953 |
var xhr = (this.dataType == DS.TYPE_XHR) ? true : false; |
| 954 |
var oParsedResponse = null; |
| 955 |
var oFullResponse = oRawResponse; |
| 956 |
|
| 957 |
// Try to sniff data type if it has not been defined |
| 958 |
if(this.responseType === DS.TYPE_UNKNOWN) { |
| 959 |
var ctype = (oRawResponse && oRawResponse.getResponseHeader) ? oRawResponse.getResponseHeader["Content-Type"] : null; |
| 960 |
if(ctype) { |
| 961 |
// xml |
| 962 |
if(ctype.indexOf("text/xml") > -1) { |
| 963 |
this.responseType = DS.TYPE_XML; |
| 964 |
} |
| 965 |
else if(ctype.indexOf("application/json") > -1) { // json |
| 966 |
this.responseType = DS.TYPE_JSON; |
| 967 |
} |
| 968 |
else if(ctype.indexOf("text/plain") > -1) { // text |
| 969 |
this.responseType = DS.TYPE_TEXT; |
| 970 |
} |
| 971 |
} |
| 972 |
else { |
| 973 |
if(YAHOO.lang.isArray(oRawResponse)) { // array |
| 974 |
this.responseType = DS.TYPE_JSARRAY; |
| 975 |
} |
| 976 |
// xml |
| 977 |
else if(oRawResponse && oRawResponse.nodeType && (oRawResponse.nodeType === 9 || oRawResponse.nodeType === 1 || oRawResponse.nodeType === 11)) { |
| 978 |
this.responseType = DS.TYPE_XML; |
| 979 |
} |
| 980 |
else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table |
| 981 |
this.responseType = DS.TYPE_HTMLTABLE; |
| 982 |
} |
| 983 |
else if(YAHOO.lang.isObject(oRawResponse)) { // json |
| 984 |
this.responseType = DS.TYPE_JSON; |
| 985 |
} |
| 986 |
else if(YAHOO.lang.isString(oRawResponse)) { // text |
| 987 |
this.responseType = DS.TYPE_TEXT; |
| 988 |
} |
| 989 |
} |
| 990 |
} |
| 991 |
|
| 992 |
switch(this.responseType) { |
| 993 |
case DS.TYPE_JSARRAY: |
| 994 |
if(xhr && oRawResponse && oRawResponse.responseText) { |
| 995 |
oFullResponse = oRawResponse.responseText; |
| 996 |
} |
| 997 |
try { |
| 998 |
// Convert to JS array if it's a string |
| 999 |
if(lang.isString(oFullResponse)) { |
| 1000 |
var parseArgs = [oFullResponse].concat(this.parseJSONArgs); |
| 1001 |
// Check for YUI JSON Util |
| 1002 |
if(lang.JSON) { |
| 1003 |
oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs); |
| 1004 |
} |
| 1005 |
// Look for JSON parsers using an API similar to json2.js |
| 1006 |
else if(window.JSON && JSON.parse) { |
| 1007 |
oFullResponse = JSON.parse.apply(JSON,parseArgs); |
| 1008 |
} |
| 1009 |
// Look for JSON parsers using an API similar to json.js |
| 1010 |
else if(oFullResponse.parseJSON) { |
| 1011 |
oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1)); |
| 1012 |
} |
| 1013 |
// No JSON lib found so parse the string |
| 1014 |
else { |
| 1015 |
// Trim leading spaces |
| 1016 |
while (oFullResponse.length > 0 && |
| 1017 |
(oFullResponse.charAt(0) != "{") && |
| 1018 |
(oFullResponse.charAt(0) != "[")) { |
| 1019 |
oFullResponse = oFullResponse.substring(1, oFullResponse.length); |
| 1020 |
} |
| 1021 |
|
| 1022 |
if(oFullResponse.length > 0) { |
| 1023 |
// Strip extraneous stuff at the end |
| 1024 |
var arrayEnd = |
| 1025 |
Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}")); |
| 1026 |
oFullResponse = oFullResponse.substring(0,arrayEnd+1); |
| 1027 |
|
| 1028 |
// Turn the string into an object literal... |
| 1029 |
// ...eval is necessary here |
| 1030 |
oFullResponse = eval("(" + oFullResponse + ")"); |
| 1031 |
|
| 1032 |
} |
| 1033 |
} |
| 1034 |
} |
| 1035 |
} |
| 1036 |
catch(e1) { |
| 1037 |
} |
| 1038 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1039 |
oParsedResponse = this.parseArrayData(oRequest, oFullResponse); |
| 1040 |
break; |
| 1041 |
case DS.TYPE_JSON: |
| 1042 |
if(xhr && oRawResponse && oRawResponse.responseText) { |
| 1043 |
oFullResponse = oRawResponse.responseText; |
| 1044 |
} |
| 1045 |
try { |
| 1046 |
// Convert to JSON object if it's a string |
| 1047 |
if(lang.isString(oFullResponse)) { |
| 1048 |
var parseArgs = [oFullResponse].concat(this.parseJSONArgs); |
| 1049 |
// Check for YUI JSON Util |
| 1050 |
if(lang.JSON) { |
| 1051 |
oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs); |
| 1052 |
} |
| 1053 |
// Look for JSON parsers using an API similar to json2.js |
| 1054 |
else if(window.JSON && JSON.parse) { |
| 1055 |
oFullResponse = JSON.parse.apply(JSON,parseArgs); |
| 1056 |
} |
| 1057 |
// Look for JSON parsers using an API similar to json.js |
| 1058 |
else if(oFullResponse.parseJSON) { |
| 1059 |
oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1)); |
| 1060 |
} |
| 1061 |
// No JSON lib found so parse the string |
| 1062 |
else { |
| 1063 |
// Trim leading spaces |
| 1064 |
while (oFullResponse.length > 0 && |
| 1065 |
(oFullResponse.charAt(0) != "{") && |
| 1066 |
(oFullResponse.charAt(0) != "[")) { |
| 1067 |
oFullResponse = oFullResponse.substring(1, oFullResponse.length); |
| 1068 |
} |
| 1069 |
|
| 1070 |
if(oFullResponse.length > 0) { |
| 1071 |
// Strip extraneous stuff at the end |
| 1072 |
var objEnd = Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}")); |
| 1073 |
oFullResponse = oFullResponse.substring(0,objEnd+1); |
| 1074 |
|
| 1075 |
// Turn the string into an object literal... |
| 1076 |
// ...eval is necessary here |
| 1077 |
oFullResponse = eval("(" + oFullResponse + ")"); |
| 1078 |
|
| 1079 |
} |
| 1080 |
} |
| 1081 |
} |
| 1082 |
} |
| 1083 |
catch(e) { |
| 1084 |
} |
| 1085 |
|
| 1086 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1087 |
oParsedResponse = this.parseJSONData(oRequest, oFullResponse); |
| 1088 |
break; |
| 1089 |
case DS.TYPE_HTMLTABLE: |
| 1090 |
if(xhr && oRawResponse.responseText) { |
| 1091 |
var el = document.createElement('div'); |
| 1092 |
el.innerHTML = oRawResponse.responseText; |
| 1093 |
oFullResponse = el.getElementsByTagName('table')[0]; |
| 1094 |
} |
| 1095 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1096 |
oParsedResponse = this.parseHTMLTableData(oRequest, oFullResponse); |
| 1097 |
break; |
| 1098 |
case DS.TYPE_XML: |
| 1099 |
if(xhr && oRawResponse.responseXML) { |
| 1100 |
oFullResponse = oRawResponse.responseXML; |
| 1101 |
} |
| 1102 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1103 |
oParsedResponse = this.parseXMLData(oRequest, oFullResponse); |
| 1104 |
break; |
| 1105 |
case DS.TYPE_TEXT: |
| 1106 |
if(xhr && lang.isString(oRawResponse.responseText)) { |
| 1107 |
oFullResponse = oRawResponse.responseText; |
| 1108 |
} |
| 1109 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1110 |
oParsedResponse = this.parseTextData(oRequest, oFullResponse); |
| 1111 |
break; |
| 1112 |
default: |
| 1113 |
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback); |
| 1114 |
oParsedResponse = this.parseData(oRequest, oFullResponse); |
| 1115 |
break; |
| 1116 |
} |
| 1117 |
|
| 1118 |
|
| 1119 |
// Clean up for consistent signature |
| 1120 |
oParsedResponse = oParsedResponse || {}; |
| 1121 |
if(!oParsedResponse.results) { |
| 1122 |
oParsedResponse.results = []; |
| 1123 |
} |
| 1124 |
if(!oParsedResponse.meta) { |
| 1125 |
oParsedResponse.meta = {}; |
| 1126 |
} |
| 1127 |
|
| 1128 |
// Success |
| 1129 |
if(!oParsedResponse.error) { |
| 1130 |
// Last chance to touch the raw response or the parsed response |
| 1131 |
oParsedResponse = this.doBeforeCallback(oRequest, oFullResponse, oParsedResponse, oCallback); |
| 1132 |
this.fireEvent("responseParseEvent", {request:oRequest, |
| 1133 |
response:oParsedResponse, callback:oCallback, caller:oCaller}); |
| 1134 |
// Cache the response |
| 1135 |
this.addToCache(oRequest, oParsedResponse); |
| 1136 |
} |
| 1137 |
// Error |
| 1138 |
else { |
| 1139 |
// Be sure the error flag is on |
| 1140 |
oParsedResponse.error = true; |
| 1141 |
this.fireEvent("dataErrorEvent", {request:oRequest, response: oRawResponse, callback:oCallback, |
| 1142 |
caller:oCaller, message:DS.ERROR_DATANULL}); |
| 1143 |
YAHOO.log(DS.ERROR_DATANULL, "error", this.toString()); |
| 1144 |
} |
| 1145 |
|
| 1146 |
// Send the response back to the caller |
| 1147 |
oParsedResponse.tId = tId; |
| 1148 |
DS.issueCallback(oCallback,[oRequest,oParsedResponse],oParsedResponse.error,oCaller); |
| 1149 |
}, |
| 1150 |
|
| 1151 |
/** |
| 1152 |
* Overridable method gives implementers access to the original full response |
| 1153 |
* before the data gets parsed. Implementers should take care not to return an |
| 1154 |
* unparsable or otherwise invalid response. |
| 1155 |
* |
| 1156 |
* @method doBeforeParseData |
| 1157 |
* @param oRequest {Object} Request object. |
| 1158 |
* @param oFullResponse {Object} The full response from the live database. |
| 1159 |
* @param oCallback {Object} The callback object. |
| 1160 |
* @return {Object} Full response for parsing. |
| 1161 |
|
| 1162 |
*/ |
| 1163 |
doBeforeParseData : function(oRequest, oFullResponse, oCallback) { |
| 1164 |
return oFullResponse; |
| 1165 |
}, |
| 1166 |
|
| 1167 |
/** |
| 1168 |
* Overridable method gives implementers access to the original full response and |
| 1169 |
* the parsed response (parsed against the given schema) before the data |
| 1170 |
* is added to the cache (if applicable) and then sent back to callback function. |
| 1171 |
* This is your chance to access the raw response and/or populate the parsed |
| 1172 |
* response with any custom data. |
| 1173 |
* |
| 1174 |
* @method doBeforeCallback |
| 1175 |
* @param oRequest {Object} Request object. |
| 1176 |
* @param oFullResponse {Object} The full response from the live database. |
| 1177 |
* @param oParsedResponse {Object} The parsed response to return to calling object. |
| 1178 |
* @param oCallback {Object} The callback object. |
| 1179 |
* @return {Object} Parsed response object. |
| 1180 |
*/ |
| 1181 |
doBeforeCallback : function(oRequest, oFullResponse, oParsedResponse, oCallback) { |
| 1182 |
return oParsedResponse; |
| 1183 |
}, |
| 1184 |
|
| 1185 |
/** |
| 1186 |
* Overridable method parses data of generic RESPONSE_TYPE into a response object. |
| 1187 |
* |
| 1188 |
* @method parseData |
| 1189 |
* @param oRequest {Object} Request object. |
| 1190 |
* @param oFullResponse {Object} The full Array from the live database. |
| 1191 |
* @return {Object} Parsed response object with the following properties:<br> |
| 1192 |
* - results {Array} Array of parsed data results<br> |
| 1193 |
* - meta {Object} Object literal of meta values<br> |
| 1194 |
* - error {Boolean} (optional) True if there was an error<br> |
| 1195 |
*/ |
| 1196 |
parseData : function(oRequest, oFullResponse) { |
| 1197 |
if(lang.isValue(oFullResponse)) { |
| 1198 |
var oParsedResponse = {results:oFullResponse,meta:{}}; |
| 1199 |
YAHOO.log("Parsed generic data is " + |
| 1200 |
lang.dump(oParsedResponse), "info", this.toString()); |
| 1201 |
return oParsedResponse; |
| 1202 |
|
| 1203 |
} |
| 1204 |
YAHOO.log("Generic data could not be parsed: " + lang.dump(oFullResponse), |
| 1205 |
"error", this.toString()); |
| 1206 |
return null; |
| 1207 |
}, |
| 1208 |
|
| 1209 |
/** |
| 1210 |
* Overridable method parses Array data into a response object. |
| 1211 |
* |
| 1212 |
* @method parseArrayData |
| 1213 |
* @param oRequest {Object} Request object. |
| 1214 |
* @param oFullResponse {Object} The full Array from the live database. |
| 1215 |
* @return {Object} Parsed response object with the following properties:<br> |
| 1216 |
* - results (Array) Array of parsed data results<br> |
| 1217 |
* - error (Boolean) True if there was an error |
| 1218 |
*/ |
| 1219 |
parseArrayData : function(oRequest, oFullResponse) { |
| 1220 |
if(lang.isArray(oFullResponse)) { |
| 1221 |
var results = [], |
| 1222 |
i, j, |
| 1223 |
rec, field, data; |
| 1224 |
|
| 1225 |
// Parse for fields |
| 1226 |
if(lang.isArray(this.responseSchema.fields)) { |
| 1227 |
var fields = this.responseSchema.fields; |
| 1228 |
for (i = fields.length - 1; i >= 0; --i) { |
| 1229 |
if (typeof fields[i] !== 'object') { |
| 1230 |
fields[i] = { key : fields[i] }; |
| 1231 |
} |
| 1232 |
} |
| 1233 |
|
| 1234 |
var parsers = {}, p; |
| 1235 |
for (i = fields.length - 1; i >= 0; --i) { |
| 1236 |
p = (typeof fields[i].parser === 'function' ? |
| 1237 |
fields[i].parser : |
| 1238 |
DS.Parser[fields[i].parser+'']) || fields[i].converter; |
| 1239 |
if (p) { |
| 1240 |
parsers[fields[i].key] = p; |
| 1241 |
} |
| 1242 |
} |
| 1243 |
|
| 1244 |
var arrType = lang.isArray(oFullResponse[0]); |
| 1245 |
for(i=oFullResponse.length-1; i>-1; i--) { |
| 1246 |
var oResult = {}; |
| 1247 |
rec = oFullResponse[i]; |
| 1248 |
if (typeof rec === 'object') { |
| 1249 |
for(j=fields.length-1; j>-1; j--) { |
| 1250 |
field = fields[j]; |
| 1251 |
data = arrType ? rec[j] : rec[field.key]; |
| 1252 |
|
| 1253 |
if (parsers[field.key]) { |
| 1254 |
data = parsers[field.key].call(this,data); |
| 1255 |
} |
| 1256 |
|
| 1257 |
// Safety measure |
| 1258 |
if(data === undefined) { |
| 1259 |
data = null; |
| 1260 |
} |
| 1261 |
|
| 1262 |
oResult[field.key] = data; |
| 1263 |
} |
| 1264 |
} |
| 1265 |
else if (lang.isString(rec)) { |
| 1266 |
for(j=fields.length-1; j>-1; j--) { |
| 1267 |
field = fields[j]; |
| 1268 |
data = rec; |
| 1269 |
|
| 1270 |
if (parsers[field.key]) { |
| 1271 |
data = parsers[field.key].call(this,data); |
| 1272 |
} |
| 1273 |
|
| 1274 |
// Safety measure |
| 1275 |
if(data === undefined) { |
| 1276 |
data = null; |
| 1277 |
} |
| 1278 |
|
| 1279 |
oResult[field.key] = data; |
| 1280 |
} |
| 1281 |
} |
| 1282 |
results[i] = oResult; |
| 1283 |
} |
| 1284 |
} |
| 1285 |
// Return entire data set |
| 1286 |
else { |
| 1287 |
results = oFullResponse; |
| 1288 |
} |
| 1289 |
var oParsedResponse = {results:results}; |
| 1290 |
YAHOO.log("Parsed array data is " + |
| 1291 |
lang.dump(oParsedResponse), "info", this.toString()); |
| 1292 |
return oParsedResponse; |
| 1293 |
|
| 1294 |
} |
| 1295 |
YAHOO.log("Array data could not be parsed: " + lang.dump(oFullResponse), |
| 1296 |
"error", this.toString()); |
| 1297 |
return null; |
| 1298 |
}, |
| 1299 |
|
| 1300 |
/** |
| 1301 |
* Overridable method parses plain text data into a response object. |
| 1302 |
* |
| 1303 |
* @method parseTextData |
| 1304 |
* @param oRequest {Object} Request object. |
| 1305 |
* @param oFullResponse {Object} The full text response from the live database. |
| 1306 |
* @return {Object} Parsed response object with the following properties:<br> |
| 1307 |
* - results (Array) Array of parsed data results<br> |
| 1308 |
* - error (Boolean) True if there was an error |
| 1309 |
*/ |
| 1310 |
parseTextData : function(oRequest, oFullResponse) { |
| 1311 |
if(lang.isString(oFullResponse)) { |
| 1312 |
if(lang.isString(this.responseSchema.recordDelim) && |
| 1313 |
lang.isString(this.responseSchema.fieldDelim)) { |
| 1314 |
var oParsedResponse = {results:[]}; |
| 1315 |
var recDelim = this.responseSchema.recordDelim; |
| 1316 |
var fieldDelim = this.responseSchema.fieldDelim; |
| 1317 |
if(oFullResponse.length > 0) { |
| 1318 |
// Delete the last line delimiter at the end of the data if it exists |
| 1319 |
var newLength = oFullResponse.length-recDelim.length; |
| 1320 |
if(oFullResponse.substr(newLength) == recDelim) { |
| 1321 |
oFullResponse = oFullResponse.substr(0, newLength); |
| 1322 |
} |
| 1323 |
if(oFullResponse.length > 0) { |
| 1324 |
// Split along record delimiter to get an array of strings |
| 1325 |
var recordsarray = oFullResponse.split(recDelim); |
| 1326 |
// Cycle through each record |
| 1327 |
for(var i = 0, len = recordsarray.length, recIdx = 0; i < len; ++i) { |
| 1328 |
var bError = false, |
| 1329 |
sRecord = recordsarray[i]; |
| 1330 |
if (lang.isString(sRecord) && (sRecord.length > 0)) { |
| 1331 |
// Split each record along field delimiter to get data |
| 1332 |
var fielddataarray = recordsarray[i].split(fieldDelim); |
| 1333 |
var oResult = {}; |
| 1334 |
|
| 1335 |
// Filter for fields data |
| 1336 |
if(lang.isArray(this.responseSchema.fields)) { |
| 1337 |
var fields = this.responseSchema.fields; |
| 1338 |
for(var j=fields.length-1; j>-1; j--) { |
| 1339 |
try { |
| 1340 |
// Remove quotation marks from edges, if applicable |
| 1341 |
var data = fielddataarray[j]; |
| 1342 |
if (lang.isString(data)) { |
| 1343 |
if(data.charAt(0) == "\"") { |
| 1344 |
data = data.substr(1); |
| 1345 |
} |
| 1346 |
if(data.charAt(data.length-1) == "\"") { |
| 1347 |
data = data.substr(0,data.length-1); |
| 1348 |
} |
| 1349 |
var field = fields[j]; |
| 1350 |
var key = (lang.isValue(field.key)) ? field.key : field; |
| 1351 |
// Backward compatibility |
| 1352 |
if(!field.parser && field.converter) { |
| 1353 |
field.parser = field.converter; |
| 1354 |
YAHOO.log("The field property converter has been deprecated" + |
| 1355 |
" in favor of parser", "warn", this.toString()); |
| 1356 |
} |
| 1357 |
var parser = (typeof field.parser === 'function') ? |
| 1358 |
field.parser : |
| 1359 |
DS.Parser[field.parser+'']; |
| 1360 |
if(parser) { |
| 1361 |
data = parser.call(this, data); |
| 1362 |
} |
| 1363 |
// Safety measure |
| 1364 |
if(data === undefined) { |
| 1365 |
data = null; |
| 1366 |
} |
| 1367 |
oResult[key] = data; |
| 1368 |
} |
| 1369 |
else { |
| 1370 |
bError = true; |
| 1371 |
} |
| 1372 |
} |
| 1373 |
catch(e) { |
| 1374 |
bError = true; |
| 1375 |
} |
| 1376 |
} |
| 1377 |
} |
| 1378 |
// No fields defined so pass along all data as an array |
| 1379 |
else { |
| 1380 |
oResult = fielddataarray; |
| 1381 |
} |
| 1382 |
if(!bError) { |
| 1383 |
oParsedResponse.results[recIdx++] = oResult; |
| 1384 |
} |
| 1385 |
} |
| 1386 |
} |
| 1387 |
} |
| 1388 |
} |
| 1389 |
YAHOO.log("Parsed text data is " + |
| 1390 |
lang.dump(oParsedResponse), "info", this.toString()); |
| 1391 |
return oParsedResponse; |
| 1392 |
} |
| 1393 |
} |
| 1394 |
YAHOO.log("Text data could not be parsed: " + lang.dump(oFullResponse), |
| 1395 |
"error", this.toString()); |
| 1396 |
return null; |
| 1397 |
|
| 1398 |
}, |
| 1399 |
|
| 1400 |
/** |
| 1401 |
* Overridable method parses XML data for one result into an object literal. |
| 1402 |
* |
| 1403 |
* @method parseXMLResult |
| 1404 |
* @param result {XML} XML for one result. |
| 1405 |
* @return {Object} Object literal of data for one result. |
| 1406 |
*/ |
| 1407 |
parseXMLResult : function(result) { |
| 1408 |
var oResult = {}, |
| 1409 |
schema = this.responseSchema; |
| 1410 |
|
| 1411 |
try { |
| 1412 |
// Loop through each data field in each result using the schema |
| 1413 |
for(var m = schema.fields.length-1; m >= 0 ; m--) { |
| 1414 |
var field = schema.fields[m]; |
| 1415 |
var key = (lang.isValue(field.key)) ? field.key : field; |
| 1416 |
var data = null; |
| 1417 |
|
| 1418 |
if(this.useXPath) { |
| 1419 |
data = YAHOO.util.DataSource._getLocationValue(field, result); |
| 1420 |
} |
| 1421 |
else { |
| 1422 |
// Values may be held in an attribute... |
| 1423 |
var xmlAttr = result.attributes.getNamedItem(key); |
| 1424 |
if(xmlAttr) { |
| 1425 |
data = xmlAttr.value; |
| 1426 |
} |
| 1427 |
// ...or in a node |
| 1428 |
else { |
| 1429 |
var xmlNode = result.getElementsByTagName(key); |
| 1430 |
if(xmlNode && xmlNode.item(0)) { |
| 1431 |
var item = xmlNode.item(0); |
| 1432 |
// For IE, then DOM... |
| 1433 |
data = (item) ? ((item.text) ? item.text : (item.textContent) ? item.textContent : null) : null; |
| 1434 |
// ...then fallback, but check for multiple child nodes |
| 1435 |
if(!data) { |
| 1436 |
var datapieces = []; |
| 1437 |
for(var j=0, len=item.childNodes.length; j<len; j++) { |
| 1438 |
if(item.childNodes[j].nodeValue) { |
| 1439 |
datapieces[datapieces.length] = item.childNodes[j].nodeValue; |
| 1440 |
} |
| 1441 |
} |
| 1442 |
if(datapieces.length > 0) { |
| 1443 |
data = datapieces.join(""); |
| 1444 |
} |
| 1445 |
} |
| 1446 |
} |
| 1447 |
} |
| 1448 |
} |
| 1449 |
|
| 1450 |
|
| 1451 |
// Safety net |
| 1452 |
if(data === null) { |
| 1453 |
data = ""; |
| 1454 |
} |
| 1455 |
// Backward compatibility |
| 1456 |
if(!field.parser && field.converter) { |
| 1457 |
field.parser = field.converter; |
| 1458 |
YAHOO.log("The field property converter has been deprecated" + |
| 1459 |
" in favor of parser", "warn", this.toString()); |
| 1460 |
} |
| 1461 |
var parser = (typeof field.parser === 'function') ? |
| 1462 |
field.parser : |
| 1463 |
DS.Parser[field.parser+'']; |
| 1464 |
if(parser) { |
| 1465 |
data = parser.call(this, data); |
| 1466 |
} |
| 1467 |
// Safety measure |
| 1468 |
if(data === undefined) { |
| 1469 |
data = null; |
| 1470 |
} |
| 1471 |
oResult[key] = data; |
| 1472 |
} |
| 1473 |
} |
| 1474 |
catch(e) { |
| 1475 |
YAHOO.log("Error while parsing XML result: " + e.message); |
| 1476 |
} |
| 1477 |
|
| 1478 |
return oResult; |
| 1479 |
}, |
| 1480 |
|
| 1481 |
|
| 1482 |
|
| 1483 |
/** |
| 1484 |
* Overridable method parses XML data into a response object. |
| 1485 |
* |
| 1486 |
* @method parseXMLData |
| 1487 |
* @param oRequest {Object} Request object. |
| 1488 |
* @param oFullResponse {Object} The full XML response from the live database. |
| 1489 |
* @return {Object} Parsed response object with the following properties<br> |
| 1490 |
* - results (Array) Array of parsed data results<br> |
| 1491 |
* - error (Boolean) True if there was an error |
| 1492 |
*/ |
| 1493 |
parseXMLData : function(oRequest, oFullResponse) { |
| 1494 |
var bError = false, |
| 1495 |
schema = this.responseSchema, |
| 1496 |
oParsedResponse = {meta:{}}, |
| 1497 |
xmlList = null, |
| 1498 |
metaNode = schema.metaNode, |
| 1499 |
metaLocators = schema.metaFields || {}, |
| 1500 |
i,k,loc,v; |
| 1501 |
|
| 1502 |
// In case oFullResponse is something funky |
| 1503 |
try { |
| 1504 |
// Pull any meta identified |
| 1505 |
if(this.useXPath) { |
| 1506 |
for (k in metaLocators) { |
| 1507 |
oParsedResponse.meta[k] = YAHOO.util.DataSource._getLocationValue(metaLocators[k], oFullResponse); |
| 1508 |
} |
| 1509 |
} |
| 1510 |
else { |
| 1511 |
metaNode = metaNode ? oFullResponse.getElementsByTagName(metaNode)[0] : |
| 1512 |
oFullResponse; |
| 1513 |
|
| 1514 |
if (metaNode) { |
| 1515 |
for (k in metaLocators) { |
| 1516 |
if (lang.hasOwnProperty(metaLocators, k)) { |
| 1517 |
loc = metaLocators[k]; |
| 1518 |
// Look for a node |
| 1519 |
v = metaNode.getElementsByTagName(loc)[0]; |
| 1520 |
|
| 1521 |
if (v) { |
| 1522 |
v = v.firstChild.nodeValue; |
| 1523 |
} else { |
| 1524 |
// Look for an attribute |
| 1525 |
v = metaNode.attributes.getNamedItem(loc); |
| 1526 |
if (v) { |
| 1527 |
v = v.value; |
| 1528 |
} |
| 1529 |
} |
| 1530 |
|
| 1531 |
if (lang.isValue(v)) { |
| 1532 |
oParsedResponse.meta[k] = v; |
| 1533 |
} |
| 1534 |
} |
| 1535 |
} |
| 1536 |
} |
| 1537 |
} |
| 1538 |
|
| 1539 |
// For result data |
| 1540 |
xmlList = (schema.resultNode) ? |
| 1541 |
oFullResponse.getElementsByTagName(schema.resultNode) : |
| 1542 |
null; |
| 1543 |
} |
| 1544 |
catch(e) { |
| 1545 |
YAHOO.log("Error while parsing XML data: " + e.message); |
| 1546 |
} |
| 1547 |
if(!xmlList || !lang.isArray(schema.fields)) { |
| 1548 |
bError = true; |
| 1549 |
} |
| 1550 |
// Loop through each result |
| 1551 |
else { |
| 1552 |
oParsedResponse.results = []; |
| 1553 |
for(i = xmlList.length-1; i >= 0 ; --i) { |
| 1554 |
var oResult = this.parseXMLResult(xmlList.item(i)); |
| 1555 |
// Capture each array of values into an array of results |
| 1556 |
oParsedResponse.results[i] = oResult; |
| 1557 |
} |
| 1558 |
} |
| 1559 |
if(bError) { |
| 1560 |
YAHOO.log("XML data could not be parsed: " + |
| 1561 |
lang.dump(oFullResponse), "error", this.toString()); |
| 1562 |
oParsedResponse.error = true; |
| 1563 |
} |
| 1564 |
else { |
| 1565 |
YAHOO.log("Parsed XML data is " + |
| 1566 |
lang.dump(oParsedResponse), "info", this.toString()); |
| 1567 |
} |
| 1568 |
return oParsedResponse; |
| 1569 |
}, |
| 1570 |
|
| 1571 |
/** |
| 1572 |
* Overridable method parses JSON data into a response object. |
| 1573 |
* |
| 1574 |
* @method parseJSONData |
| 1575 |
* @param oRequest {Object} Request object. |
| 1576 |
* @param oFullResponse {Object} The full JSON from the live database. |
| 1577 |
* @return {Object} Parsed response object with the following properties<br> |
| 1578 |
* - results (Array) Array of parsed data results<br> |
| 1579 |
* - error (Boolean) True if there was an error |
| 1580 |
*/ |
| 1581 |
parseJSONData : function(oRequest, oFullResponse) { |
| 1582 |
var oParsedResponse = {results:[],meta:{}}; |
| 1583 |
|
| 1584 |
if(lang.isObject(oFullResponse) && this.responseSchema.resultsList) { |
| 1585 |
var schema = this.responseSchema, |
| 1586 |
fields = schema.fields, |
| 1587 |
resultsList = oFullResponse, |
| 1588 |
results = [], |
| 1589 |
metaFields = schema.metaFields || {}, |
| 1590 |
fieldParsers = [], |
| 1591 |
fieldPaths = [], |
| 1592 |
simpleFields = [], |
| 1593 |
bError = false, |
| 1594 |
i,len,j,v,key,parser,path; |
| 1595 |
|
| 1596 |
// Function to convert the schema's fields into walk paths |
| 1597 |
var buildPath = function (needle) { |
| 1598 |
var path = null, keys = [], i = 0; |
| 1599 |
if (needle) { |
| 1600 |
// Strip the ["string keys"] and [1] array indexes |
| 1601 |
needle = needle. |
| 1602 |
replace(/\[(['"])(.*?)\1\]/g, |
| 1603 |
function (x,$1,$2) {keys[i]=$2;return '.@'+(i++);}). |
| 1604 |
replace(/\[(\d+)\]/g, |
| 1605 |
function (x,$1) {keys[i]=parseInt($1,10)|0;return '.@'+(i++);}). |
| 1606 |
replace(/^\./,''); // remove leading dot |
| 1607 |
|
| 1608 |
// If the cleaned needle contains invalid characters, the |
| 1609 |
// path is invalid |
| 1610 |
if (!/[^\w\.\$@]/.test(needle)) { |
| 1611 |
path = needle.split('.'); |
| 1612 |
for (i=path.length-1; i >= 0; --i) { |
| 1613 |
if (path[i].charAt(0) === '@') { |
| 1614 |
path[i] = keys[parseInt(path[i].substr(1),10)]; |
| 1615 |
} |
| 1616 |
} |
| 1617 |
} |
| 1618 |
else { |
| 1619 |
YAHOO.log("Invalid locator: " + needle, "error", this.toString()); |
| 1620 |
} |
| 1621 |
} |
| 1622 |
return path; |
| 1623 |
}; |
| 1624 |
|
| 1625 |
|
| 1626 |
// Function to walk a path and return the pot of gold |
| 1627 |
var walkPath = function (path, origin) { |
| 1628 |
var v=origin,i=0,len=path.length; |
| 1629 |
for (;i<len && v;++i) { |
| 1630 |
v = v[path[i]]; |
| 1631 |
} |
| 1632 |
return v; |
| 1633 |
}; |
| 1634 |
|
| 1635 |
// Parse the response |
| 1636 |
// Step 1. Pull the resultsList from oFullResponse (default assumes |
| 1637 |
// oFullResponse IS the resultsList) |
| 1638 |
path = buildPath(schema.resultsList); |
| 1639 |
if (path) { |
| 1640 |
resultsList = walkPath(path, oFullResponse); |
| 1641 |
if (resultsList === undefined) { |
| 1642 |
bError = true; |
| 1643 |
} |
| 1644 |
} else { |
| 1645 |
bError = true; |
| 1646 |
} |
| 1647 |
|
| 1648 |
if (!resultsList) { |
| 1649 |
resultsList = []; |
| 1650 |
} |
| 1651 |
|
| 1652 |
if (!lang.isArray(resultsList)) { |
| 1653 |
resultsList = [resultsList]; |
| 1654 |
} |
| 1655 |
|
| 1656 |
if (!bError) { |
| 1657 |
// Step 2. Parse out field data if identified |
| 1658 |
if(schema.fields) { |
| 1659 |
var field; |
| 1660 |
// Build the field parser map and location paths |
| 1661 |
for (i=0, len=fields.length; i<len; i++) { |
| 1662 |
field = fields[i]; |
| 1663 |
key = field.key || field; |
| 1664 |
parser = ((typeof field.parser === 'function') ? |
| 1665 |
field.parser : |
| 1666 |
DS.Parser[field.parser+'']) || field.converter; |
| 1667 |
path = buildPath(key); |
| 1668 |
|
| 1669 |
if (parser) { |
| 1670 |
fieldParsers[fieldParsers.length] = {key:key,parser:parser}; |
| 1671 |
} |
| 1672 |
|
| 1673 |
if (path) { |
| 1674 |
if (path.length > 1) { |
| 1675 |
fieldPaths[fieldPaths.length] = {key:key,path:path}; |
| 1676 |
} else { |
| 1677 |
simpleFields[simpleFields.length] = {key:key,path:path[0]}; |
| 1678 |
} |
| 1679 |
} else { |
| 1680 |
YAHOO.log("Invalid key syntax: " + key,"warn",this.toString()); |
| 1681 |
} |
| 1682 |
} |
| 1683 |
|
| 1684 |
// Process the results, flattening the records and/or applying parsers if needed |
| 1685 |
for (i = resultsList.length - 1; i >= 0; --i) { |
| 1686 |
var r = resultsList[i], rec = {}; |
| 1687 |
if(r) { |
| 1688 |
for (j = simpleFields.length - 1; j >= 0; --j) { |
| 1689 |
// Bug 1777850: data might be held in an array |
| 1690 |
rec[simpleFields[j].key] = |
| 1691 |
(r[simpleFields[j].path] !== undefined) ? |
| 1692 |
r[simpleFields[j].path] : r[j]; |
| 1693 |
} |
| 1694 |
|
| 1695 |
for (j = fieldPaths.length - 1; j >= 0; --j) { |
| 1696 |
rec[fieldPaths[j].key] = walkPath(fieldPaths[j].path,r); |
| 1697 |
} |
| 1698 |
|
| 1699 |
for (j = fieldParsers.length - 1; j >= 0; --j) { |
| 1700 |
var p = fieldParsers[j].key; |
| 1701 |
rec[p] = fieldParsers[j].parser(rec[p]); |
| 1702 |
if (rec[p] === undefined) { |
| 1703 |
rec[p] = null; |
| 1704 |
} |
| 1705 |
} |
| 1706 |
} |
| 1707 |
results[i] = rec; |
| 1708 |
} |
| 1709 |
} |
| 1710 |
else { |
| 1711 |
results = resultsList; |
| 1712 |
} |
| 1713 |
|
| 1714 |
for (key in metaFields) { |
| 1715 |
if (lang.hasOwnProperty(metaFields,key)) { |
| 1716 |
path = buildPath(metaFields[key]); |
| 1717 |
if (path) { |
| 1718 |
v = walkPath(path, oFullResponse); |
| 1719 |
oParsedResponse.meta[key] = v; |
| 1720 |
} |
| 1721 |
} |
| 1722 |
} |
| 1723 |
|
| 1724 |
} else { |
| 1725 |
YAHOO.log("JSON data could not be parsed due to invalid responseSchema.resultsList or invalid response: " + |
| 1726 |
lang.dump(oFullResponse), "error", this.toString()); |
| 1727 |
|
| 1728 |
oParsedResponse.error = true; |
| 1729 |
} |
| 1730 |
|
| 1731 |
oParsedResponse.results = results; |
| 1732 |
} |
| 1733 |
else { |
| 1734 |
YAHOO.log("JSON data could not be parsed: " + |
| 1735 |
lang.dump(oFullResponse), "error", this.toString()); |
| 1736 |
oParsedResponse.error = true; |
| 1737 |
} |
| 1738 |
|
| 1739 |
return oParsedResponse; |
| 1740 |
}, |
| 1741 |
|
| 1742 |
/** |
| 1743 |
* Overridable method parses an HTML TABLE element reference into a response object. |
| 1744 |
* Data is parsed out of TR elements from all TBODY elements. |
| 1745 |
* |
| 1746 |
* @method parseHTMLTableData |
| 1747 |
* @param oRequest {Object} Request object. |
| 1748 |
* @param oFullResponse {Object} The full HTML element reference from the live database. |
| 1749 |
* @return {Object} Parsed response object with the following properties<br> |
| 1750 |
* - results (Array) Array of parsed data results<br> |
| 1751 |
* - error (Boolean) True if there was an error |
| 1752 |
*/ |
| 1753 |
parseHTMLTableData : function(oRequest, oFullResponse) { |
| 1754 |
var bError = false; |
| 1755 |
var elTable = oFullResponse; |
| 1756 |
var fields = this.responseSchema.fields; |
| 1757 |
var oParsedResponse = {results:[]}; |
| 1758 |
|
| 1759 |
if(lang.isArray(fields)) { |
| 1760 |
// Iterate through each TBODY |
| 1761 |
for(var i=0; i<elTable.tBodies.length; i++) { |
| 1762 |
var elTbody = elTable.tBodies[i]; |
| 1763 |
|
| 1764 |
// Iterate through each TR |
| 1765 |
for(var j=elTbody.rows.length-1; j>-1; j--) { |
| 1766 |
var elRow = elTbody.rows[j]; |
| 1767 |
var oResult = {}; |
| 1768 |
|
| 1769 |
for(var k=fields.length-1; k>-1; k--) { |
| 1770 |
var field = fields[k]; |
| 1771 |
var key = (lang.isValue(field.key)) ? field.key : field; |
| 1772 |
var data = elRow.cells[k].innerHTML; |
| 1773 |
|
| 1774 |
// Backward compatibility |
| 1775 |
if(!field.parser && field.converter) { |
| 1776 |
field.parser = field.converter; |
| 1777 |
YAHOO.log("The field property converter has been deprecated" + |
| 1778 |
" in favor of parser", "warn", this.toString()); |
| 1779 |
} |
| 1780 |
var parser = (typeof field.parser === 'function') ? |
| 1781 |
field.parser : |
| 1782 |
DS.Parser[field.parser+'']; |
| 1783 |
if(parser) { |
| 1784 |
data = parser.call(this, data); |
| 1785 |
} |
| 1786 |
// Safety measure |
| 1787 |
if(data === undefined) { |
| 1788 |
data = null; |
| 1789 |
} |
| 1790 |
oResult[key] = data; |
| 1791 |
} |
| 1792 |
oParsedResponse.results[j] = oResult; |
| 1793 |
} |
| 1794 |
} |
| 1795 |
} |
| 1796 |
else { |
| 1797 |
bError = true; |
| 1798 |
YAHOO.log("Invalid responseSchema.fields", "error", this.toString()); |
| 1799 |
} |
| 1800 |
|
| 1801 |
if(bError) { |
| 1802 |
YAHOO.log("HTML TABLE data could not be parsed: " + |
| 1803 |
lang.dump(oFullResponse), "error", this.toString()); |
| 1804 |
oParsedResponse.error = true; |
| 1805 |
} |
| 1806 |
else { |
| 1807 |
YAHOO.log("Parsed HTML TABLE data is " + |
| 1808 |
lang.dump(oParsedResponse), "info", this.toString()); |
| 1809 |
} |
| 1810 |
return oParsedResponse; |
| 1811 |
} |
| 1812 |
|
| 1813 |
}; |
| 1814 |
|
| 1815 |
// DataSourceBase uses EventProvider |
| 1816 |
lang.augmentProto(DS, util.EventProvider); |
| 1817 |
|
| 1818 |
|
| 1819 |
|
| 1820 |
/****************************************************************************/ |
| 1821 |
/****************************************************************************/ |
| 1822 |
/****************************************************************************/ |
| 1823 |
|
| 1824 |
/** |
| 1825 |
* LocalDataSource class for in-memory data structs including JavaScript arrays, |
| 1826 |
* JavaScript object literals (JSON), XML documents, and HTML tables. |
| 1827 |
* |
| 1828 |
* @namespace YAHOO.util |
| 1829 |
* @class YAHOO.util.LocalDataSource |
| 1830 |
* @extends YAHOO.util.DataSourceBase |
| 1831 |
* @constructor |
| 1832 |
* @param oLiveData {HTMLElement} Pointer to live data. |
| 1833 |
* @param oConfigs {object} (optional) Object literal of configuration values. |
| 1834 |
*/ |
| 1835 |
util.LocalDataSource = function(oLiveData, oConfigs) { |
| 1836 |
this.dataType = DS.TYPE_LOCAL; |
| 1837 |
|
| 1838 |
if(oLiveData) { |
| 1839 |
if(YAHOO.lang.isArray(oLiveData)) { // array |
| 1840 |
this.responseType = DS.TYPE_JSARRAY; |
| 1841 |
} |
| 1842 |
// xml |
| 1843 |
else if(oLiveData.nodeType && oLiveData.nodeType == 9) { |
| 1844 |
this.responseType = DS.TYPE_XML; |
| 1845 |
} |
| 1846 |
else if(oLiveData.nodeName && (oLiveData.nodeName.toLowerCase() == "table")) { // table |
| 1847 |
this.responseType = DS.TYPE_HTMLTABLE; |
| 1848 |
oLiveData = oLiveData.cloneNode(true); |
| 1849 |
} |
| 1850 |
else if(YAHOO.lang.isString(oLiveData)) { // text |
| 1851 |
this.responseType = DS.TYPE_TEXT; |
| 1852 |
} |
| 1853 |
else if(YAHOO.lang.isObject(oLiveData)) { // json |
| 1854 |
this.responseType = DS.TYPE_JSON; |
| 1855 |
} |
| 1856 |
} |
| 1857 |
else { |
| 1858 |
oLiveData = []; |
| 1859 |
this.responseType = DS.TYPE_JSARRAY; |
| 1860 |
} |
| 1861 |
|
| 1862 |
util.LocalDataSource.superclass.constructor.call(this, oLiveData, oConfigs); |
| 1863 |
}; |
| 1864 |
|
| 1865 |
// LocalDataSource extends DataSourceBase |
| 1866 |
lang.extend(util.LocalDataSource, DS); |
| 1867 |
|
| 1868 |
// Copy static members to LocalDataSource class |
| 1869 |
lang.augmentObject(util.LocalDataSource, DS); |
| 1870 |
|
| 1871 |
|
| 1872 |
|
| 1873 |
|
| 1874 |
|
| 1875 |
|
| 1876 |
|
| 1877 |
|
| 1878 |
|
| 1879 |
|
| 1880 |
|
| 1881 |
|
| 1882 |
|
| 1883 |
/****************************************************************************/ |
| 1884 |
/****************************************************************************/ |
| 1885 |
/****************************************************************************/ |
| 1886 |
|
| 1887 |
/** |
| 1888 |
* FunctionDataSource class for JavaScript functions. |
| 1889 |
* |
| 1890 |
* @namespace YAHOO.util |
| 1891 |
* @class YAHOO.util.FunctionDataSource |
| 1892 |
* @extends YAHOO.util.DataSourceBase |
| 1893 |
* @constructor |
| 1894 |
* @param oLiveData {HTMLElement} Pointer to live data. |
| 1895 |
* @param oConfigs {object} (optional) Object literal of configuration values. |
| 1896 |
*/ |
| 1897 |
util.FunctionDataSource = function(oLiveData, oConfigs) { |
| 1898 |
this.dataType = DS.TYPE_JSFUNCTION; |
| 1899 |
oLiveData = oLiveData || function() {}; |
| 1900 |
|
| 1901 |
util.FunctionDataSource.superclass.constructor.call(this, oLiveData, oConfigs); |
| 1902 |
}; |
| 1903 |
|
| 1904 |
// FunctionDataSource extends DataSourceBase |
| 1905 |
lang.extend(util.FunctionDataSource, DS, { |
| 1906 |
|
| 1907 |
///////////////////////////////////////////////////////////////////////////// |
| 1908 |
// |
| 1909 |
// FunctionDataSource public properties |
| 1910 |
// |
| 1911 |
///////////////////////////////////////////////////////////////////////////// |
| 1912 |
|
| 1913 |
/** |
| 1914 |
* Context in which to execute the function. By default, is the DataSource |
| 1915 |
* instance itself. If set, the function will receive the DataSource instance |
| 1916 |
* as an additional argument. |
| 1917 |
* |
| 1918 |
* @property scope |
| 1919 |
* @type Object |
| 1920 |
* @default null |
| 1921 |
*/ |
| 1922 |
scope : null, |
| 1923 |
|
| 1924 |
|
| 1925 |
///////////////////////////////////////////////////////////////////////////// |
| 1926 |
// |
| 1927 |
// FunctionDataSource public methods |
| 1928 |
// |
| 1929 |
///////////////////////////////////////////////////////////////////////////// |
| 1930 |
|
| 1931 |
/** |
| 1932 |
* Overriding method passes query to a function. The returned response is then |
| 1933 |
* forwarded to the handleResponse function. |
| 1934 |
* |
| 1935 |
* @method makeConnection |
| 1936 |
* @param oRequest {Object} Request object. |
| 1937 |
* @param oCallback {Object} Callback object literal. |
| 1938 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 1939 |
* @return {Number} Transaction ID. |
| 1940 |
*/ |
| 1941 |
makeConnection : function(oRequest, oCallback, oCaller) { |
| 1942 |
var tId = DS._nTransactionId++; |
| 1943 |
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller}); |
| 1944 |
|
| 1945 |
// Pass the request in as a parameter and |
| 1946 |
// forward the return value to the handler |
| 1947 |
|
| 1948 |
|
| 1949 |
var oRawResponse = (this.scope) ? this.liveData.call(this.scope, oRequest, this) : this.liveData(oRequest); |
| 1950 |
|
| 1951 |
// Try to sniff data type if it has not been defined |
| 1952 |
if(this.responseType === DS.TYPE_UNKNOWN) { |
| 1953 |
if(YAHOO.lang.isArray(oRawResponse)) { // array |
| 1954 |
this.responseType = DS.TYPE_JSARRAY; |
| 1955 |
} |
| 1956 |
// xml |
| 1957 |
else if(oRawResponse && oRawResponse.nodeType && oRawResponse.nodeType == 9) { |
| 1958 |
this.responseType = DS.TYPE_XML; |
| 1959 |
} |
| 1960 |
else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table |
| 1961 |
this.responseType = DS.TYPE_HTMLTABLE; |
| 1962 |
} |
| 1963 |
else if(YAHOO.lang.isObject(oRawResponse)) { // json |
| 1964 |
this.responseType = DS.TYPE_JSON; |
| 1965 |
} |
| 1966 |
else if(YAHOO.lang.isString(oRawResponse)) { // text |
| 1967 |
this.responseType = DS.TYPE_TEXT; |
| 1968 |
} |
| 1969 |
} |
| 1970 |
|
| 1971 |
this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId); |
| 1972 |
return tId; |
| 1973 |
} |
| 1974 |
|
| 1975 |
}); |
| 1976 |
|
| 1977 |
// Copy static members to FunctionDataSource class |
| 1978 |
lang.augmentObject(util.FunctionDataSource, DS); |
| 1979 |
|
| 1980 |
|
| 1981 |
|
| 1982 |
|
| 1983 |
|
| 1984 |
|
| 1985 |
|
| 1986 |
|
| 1987 |
|
| 1988 |
|
| 1989 |
|
| 1990 |
|
| 1991 |
|
| 1992 |
/****************************************************************************/ |
| 1993 |
/****************************************************************************/ |
| 1994 |
/****************************************************************************/ |
| 1995 |
|
| 1996 |
/** |
| 1997 |
* ScriptNodeDataSource class for accessing remote data via the YUI Get Utility. |
| 1998 |
* |
| 1999 |
* @namespace YAHOO.util |
| 2000 |
* @class YAHOO.util.ScriptNodeDataSource |
| 2001 |
* @extends YAHOO.util.DataSourceBase |
| 2002 |
* @constructor |
| 2003 |
* @param oLiveData {HTMLElement} Pointer to live data. |
| 2004 |
* @param oConfigs {object} (optional) Object literal of configuration values. |
| 2005 |
*/ |
| 2006 |
util.ScriptNodeDataSource = function(oLiveData, oConfigs) { |
| 2007 |
this.dataType = DS.TYPE_SCRIPTNODE; |
| 2008 |
oLiveData = oLiveData || ""; |
| 2009 |
|
| 2010 |
util.ScriptNodeDataSource.superclass.constructor.call(this, oLiveData, oConfigs); |
| 2011 |
}; |
| 2012 |
|
| 2013 |
// ScriptNodeDataSource extends DataSourceBase |
| 2014 |
lang.extend(util.ScriptNodeDataSource, DS, { |
| 2015 |
|
| 2016 |
///////////////////////////////////////////////////////////////////////////// |
| 2017 |
// |
| 2018 |
// ScriptNodeDataSource public properties |
| 2019 |
// |
| 2020 |
///////////////////////////////////////////////////////////////////////////// |
| 2021 |
|
| 2022 |
/** |
| 2023 |
* Alias to YUI Get Utility, to allow implementers to use a custom class. |
| 2024 |
* |
| 2025 |
* @property getUtility |
| 2026 |
* @type Object |
| 2027 |
* @default YAHOO.util.Get |
| 2028 |
*/ |
| 2029 |
getUtility : util.Get, |
| 2030 |
|
| 2031 |
/** |
| 2032 |
* Defines request/response management in the following manner: |
| 2033 |
* <dl> |
| 2034 |
* <!--<dt>queueRequests</dt> |
| 2035 |
* <dd>If a request is already in progress, wait until response is returned before sending the next request.</dd> |
| 2036 |
* <dt>cancelStaleRequests</dt> |
| 2037 |
* <dd>If a request is already in progress, cancel it before sending the next request.</dd>--> |
| 2038 |
* <dt>ignoreStaleResponses</dt> |
| 2039 |
* <dd>Send all requests, but handle only the response for the most recently sent request.</dd> |
| 2040 |
* <dt>allowAll</dt> |
| 2041 |
* <dd>Send all requests and handle all responses.</dd> |
| 2042 |
* </dl> |
| 2043 |
* |
| 2044 |
* @property asyncMode |
| 2045 |
* @type String |
| 2046 |
* @default "allowAll" |
| 2047 |
*/ |
| 2048 |
asyncMode : "allowAll", |
| 2049 |
|
| 2050 |
/** |
| 2051 |
* Callback string parameter name sent to the remote script. By default, |
| 2052 |
* requests are sent to |
| 2053 |
* <URI>?<scriptCallbackParam>=callbackFunction |
| 2054 |
* |
| 2055 |
* @property scriptCallbackParam |
| 2056 |
* @type String |
| 2057 |
* @default "callback" |
| 2058 |
*/ |
| 2059 |
scriptCallbackParam : "callback", |
| 2060 |
|
| 2061 |
|
| 2062 |
///////////////////////////////////////////////////////////////////////////// |
| 2063 |
// |
| 2064 |
// ScriptNodeDataSource public methods |
| 2065 |
// |
| 2066 |
///////////////////////////////////////////////////////////////////////////// |
| 2067 |
|
| 2068 |
/** |
| 2069 |
* Creates a request callback that gets appended to the script URI. Implementers |
| 2070 |
* can customize this string to match their server's query syntax. |
| 2071 |
* |
| 2072 |
* @method generateRequestCallback |
| 2073 |
* @return {String} String fragment that gets appended to script URI that |
| 2074 |
* specifies the callback function |
| 2075 |
*/ |
| 2076 |
generateRequestCallback : function(id) { |
| 2077 |
return "&" + this.scriptCallbackParam + "=YAHOO.util.ScriptNodeDataSource.callbacks["+id+"]" ; |
| 2078 |
}, |
| 2079 |
|
| 2080 |
/** |
| 2081 |
* Overridable method gives implementers access to modify the URI before the dynamic |
| 2082 |
* script node gets inserted. Implementers should take care not to return an |
| 2083 |
* invalid URI. |
| 2084 |
* |
| 2085 |
* @method doBeforeGetScriptNode |
| 2086 |
* @param {String} URI to the script |
| 2087 |
* @return {String} URI to the script |
| 2088 |
*/ |
| 2089 |
doBeforeGetScriptNode : function(sUri) { |
| 2090 |
return sUri; |
| 2091 |
}, |
| 2092 |
|
| 2093 |
/** |
| 2094 |
* Overriding method passes query to Get Utility. The returned |
| 2095 |
* response is then forwarded to the handleResponse function. |
| 2096 |
* |
| 2097 |
* @method makeConnection |
| 2098 |
* @param oRequest {Object} Request object. |
| 2099 |
* @param oCallback {Object} Callback object literal. |
| 2100 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 2101 |
* @return {Number} Transaction ID. |
| 2102 |
*/ |
| 2103 |
makeConnection : function(oRequest, oCallback, oCaller) { |
| 2104 |
var tId = DS._nTransactionId++; |
| 2105 |
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller}); |
| 2106 |
|
| 2107 |
// If there are no global pending requests, it is safe to purge global callback stack and global counter |
| 2108 |
if(util.ScriptNodeDataSource._nPending === 0) { |
| 2109 |
util.ScriptNodeDataSource.callbacks = []; |
| 2110 |
util.ScriptNodeDataSource._nId = 0; |
| 2111 |
} |
| 2112 |
|
| 2113 |
// ID for this request |
| 2114 |
var id = util.ScriptNodeDataSource._nId; |
| 2115 |
util.ScriptNodeDataSource._nId++; |
| 2116 |
|
| 2117 |
// Dynamically add handler function with a closure to the callback stack |
| 2118 |
var oSelf = this; |
| 2119 |
util.ScriptNodeDataSource.callbacks[id] = function(oRawResponse) { |
| 2120 |
if((oSelf.asyncMode !== "ignoreStaleResponses")|| |
| 2121 |
(id === util.ScriptNodeDataSource.callbacks.length-1)) { // Must ignore stale responses |
| 2122 |
|
| 2123 |
// Try to sniff data type if it has not been defined |
| 2124 |
if(oSelf.responseType === DS.TYPE_UNKNOWN) { |
| 2125 |
if(YAHOO.lang.isArray(oRawResponse)) { // array |
| 2126 |
oSelf.responseType = DS.TYPE_JSARRAY; |
| 2127 |
} |
| 2128 |
// xml |
| 2129 |
else if(oRawResponse.nodeType && oRawResponse.nodeType == 9) { |
| 2130 |
oSelf.responseType = DS.TYPE_XML; |
| 2131 |
} |
| 2132 |
else if(oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table |
| 2133 |
oSelf.responseType = DS.TYPE_HTMLTABLE; |
| 2134 |
} |
| 2135 |
else if(YAHOO.lang.isObject(oRawResponse)) { // json |
| 2136 |
oSelf.responseType = DS.TYPE_JSON; |
| 2137 |
} |
| 2138 |
else if(YAHOO.lang.isString(oRawResponse)) { // text |
| 2139 |
oSelf.responseType = DS.TYPE_TEXT; |
| 2140 |
} |
| 2141 |
} |
| 2142 |
|
| 2143 |
oSelf.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId); |
| 2144 |
} |
| 2145 |
else { |
| 2146 |
YAHOO.log("DataSource ignored stale response for tId " + tId + "(" + oRequest + ")", "info", oSelf.toString()); |
| 2147 |
} |
| 2148 |
|
| 2149 |
delete util.ScriptNodeDataSource.callbacks[id]; |
| 2150 |
}; |
| 2151 |
|
| 2152 |
// We are now creating a request |
| 2153 |
util.ScriptNodeDataSource._nPending++; |
| 2154 |
var sUri = this.liveData + oRequest + this.generateRequestCallback(id); |
| 2155 |
sUri = this.doBeforeGetScriptNode(sUri); |
| 2156 |
YAHOO.log("DataSource is querying URL " + sUri, "info", this.toString()); |
| 2157 |
this.getUtility.script(sUri, |
| 2158 |
{autopurge: true, |
| 2159 |
onsuccess: util.ScriptNodeDataSource._bumpPendingDown, |
| 2160 |
onfail: util.ScriptNodeDataSource._bumpPendingDown}); |
| 2161 |
|
| 2162 |
return tId; |
| 2163 |
} |
| 2164 |
|
| 2165 |
}); |
| 2166 |
|
| 2167 |
// Copy static members to ScriptNodeDataSource class |
| 2168 |
lang.augmentObject(util.ScriptNodeDataSource, DS); |
| 2169 |
|
| 2170 |
// Copy static members to ScriptNodeDataSource class |
| 2171 |
lang.augmentObject(util.ScriptNodeDataSource, { |
| 2172 |
|
| 2173 |
///////////////////////////////////////////////////////////////////////////// |
| 2174 |
// |
| 2175 |
// ScriptNodeDataSource private static properties |
| 2176 |
// |
| 2177 |
///////////////////////////////////////////////////////////////////////////// |
| 2178 |
|
| 2179 |
/** |
| 2180 |
* Unique ID to track requests. |
| 2181 |
* |
| 2182 |
* @property _nId |
| 2183 |
* @type Number |
| 2184 |
* @private |
| 2185 |
* @static |
| 2186 |
*/ |
| 2187 |
_nId : 0, |
| 2188 |
|
| 2189 |
/** |
| 2190 |
* Counter for pending requests. When this is 0, it is safe to purge callbacks |
| 2191 |
* array. |
| 2192 |
* |
| 2193 |
* @property _nPending |
| 2194 |
* @type Number |
| 2195 |
* @private |
| 2196 |
* @static |
| 2197 |
*/ |
| 2198 |
_nPending : 0, |
| 2199 |
|
| 2200 |
/** |
| 2201 |
* Global array of callback functions, one for each request sent. |
| 2202 |
* |
| 2203 |
* @property callbacks |
| 2204 |
* @type Function[] |
| 2205 |
* @static |
| 2206 |
*/ |
| 2207 |
callbacks : [] |
| 2208 |
|
| 2209 |
}); |
| 2210 |
|
| 2211 |
|
| 2212 |
|
| 2213 |
|
| 2214 |
|
| 2215 |
|
| 2216 |
|
| 2217 |
|
| 2218 |
|
| 2219 |
|
| 2220 |
|
| 2221 |
|
| 2222 |
|
| 2223 |
|
| 2224 |
/****************************************************************************/ |
| 2225 |
/****************************************************************************/ |
| 2226 |
/****************************************************************************/ |
| 2227 |
|
| 2228 |
/** |
| 2229 |
* XHRDataSource class for accessing remote data via the YUI Connection Manager |
| 2230 |
* Utility |
| 2231 |
* |
| 2232 |
* @namespace YAHOO.util |
| 2233 |
* @class YAHOO.util.XHRDataSource |
| 2234 |
* @extends YAHOO.util.DataSourceBase |
| 2235 |
* @constructor |
| 2236 |
* @param oLiveData {HTMLElement} Pointer to live data. |
| 2237 |
* @param oConfigs {object} (optional) Object literal of configuration values. |
| 2238 |
*/ |
| 2239 |
util.XHRDataSource = function(oLiveData, oConfigs) { |
| 2240 |
this.dataType = DS.TYPE_XHR; |
| 2241 |
this.connMgr = this.connMgr || util.Connect; |
| 2242 |
oLiveData = oLiveData || ""; |
| 2243 |
|
| 2244 |
util.XHRDataSource.superclass.constructor.call(this, oLiveData, oConfigs); |
| 2245 |
}; |
| 2246 |
|
| 2247 |
// XHRDataSource extends DataSourceBase |
| 2248 |
lang.extend(util.XHRDataSource, DS, { |
| 2249 |
|
| 2250 |
///////////////////////////////////////////////////////////////////////////// |
| 2251 |
// |
| 2252 |
// XHRDataSource public properties |
| 2253 |
// |
| 2254 |
///////////////////////////////////////////////////////////////////////////// |
| 2255 |
|
| 2256 |
/** |
| 2257 |
* Alias to YUI Connection Manager, to allow implementers to use a custom class. |
| 2258 |
* |
| 2259 |
* @property connMgr |
| 2260 |
* @type Object |
| 2261 |
* @default YAHOO.util.Connect |
| 2262 |
*/ |
| 2263 |
connMgr: null, |
| 2264 |
|
| 2265 |
/** |
| 2266 |
* Defines request/response management in the following manner: |
| 2267 |
* <dl> |
| 2268 |
* <dt>queueRequests</dt> |
| 2269 |
* <dd>If a request is already in progress, wait until response is returned |
| 2270 |
* before sending the next request.</dd> |
| 2271 |
* |
| 2272 |
* <dt>cancelStaleRequests</dt> |
| 2273 |
* <dd>If a request is already in progress, cancel it before sending the next |
| 2274 |
* request.</dd> |
| 2275 |
* |
| 2276 |
* <dt>ignoreStaleResponses</dt> |
| 2277 |
* <dd>Send all requests, but handle only the response for the most recently |
| 2278 |
* sent request.</dd> |
| 2279 |
* |
| 2280 |
* <dt>allowAll</dt> |
| 2281 |
* <dd>Send all requests and handle all responses.</dd> |
| 2282 |
* |
| 2283 |
* </dl> |
| 2284 |
* |
| 2285 |
* @property connXhrMode |
| 2286 |
* @type String |
| 2287 |
* @default "allowAll" |
| 2288 |
*/ |
| 2289 |
connXhrMode: "allowAll", |
| 2290 |
|
| 2291 |
/** |
| 2292 |
* True if data is to be sent via POST. By default, data will be sent via GET. |
| 2293 |
* |
| 2294 |
* @property connMethodPost |
| 2295 |
* @type Boolean |
| 2296 |
* @default false |
| 2297 |
*/ |
| 2298 |
connMethodPost: false, |
| 2299 |
|
| 2300 |
/** |
| 2301 |
* The connection timeout defines how many milliseconds the XHR connection will |
| 2302 |
* wait for a server response. Any non-zero value will enable the Connection Manager's |
| 2303 |
* Auto-Abort feature. |
| 2304 |
* |
| 2305 |
* @property connTimeout |
| 2306 |
* @type Number |
| 2307 |
* @default 0 |
| 2308 |
*/ |
| 2309 |
connTimeout: 0, |
| 2310 |
|
| 2311 |
///////////////////////////////////////////////////////////////////////////// |
| 2312 |
// |
| 2313 |
// XHRDataSource public methods |
| 2314 |
// |
| 2315 |
///////////////////////////////////////////////////////////////////////////// |
| 2316 |
|
| 2317 |
/** |
| 2318 |
* Overriding method passes query to Connection Manager. The returned |
| 2319 |
* response is then forwarded to the handleResponse function. |
| 2320 |
* |
| 2321 |
* @method makeConnection |
| 2322 |
* @param oRequest {Object} Request object. |
| 2323 |
* @param oCallback {Object} Callback object literal. |
| 2324 |
* @param oCaller {Object} (deprecated) Use oCallback.scope. |
| 2325 |
* @return {Number} Transaction ID. |
| 2326 |
*/ |
| 2327 |
makeConnection : function(oRequest, oCallback, oCaller) { |
| 2328 |
|
| 2329 |
var oRawResponse = null; |
| 2330 |
var tId = DS._nTransactionId++; |
| 2331 |
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller}); |
| 2332 |
|
| 2333 |
// Set up the callback object and |
| 2334 |
// pass the request in as a URL query and |
| 2335 |
// forward the response to the handler |
| 2336 |
var oSelf = this; |
| 2337 |
var oConnMgr = this.connMgr; |
| 2338 |
var oQueue = this._oQueue; |
| 2339 |
|
| 2340 |
/** |
| 2341 |
* Define Connection Manager success handler |
| 2342 |
* |
| 2343 |
* @method _xhrSuccess |
| 2344 |
* @param oResponse {Object} HTTPXMLRequest object |
| 2345 |
* @private |
| 2346 |
*/ |
| 2347 |
var _xhrSuccess = function(oResponse) { |
| 2348 |
// If response ID does not match last made request ID, |
| 2349 |
// silently fail and wait for the next response |
| 2350 |
if(oResponse && (this.connXhrMode == "ignoreStaleResponses") && |
| 2351 |
(oResponse.tId != oQueue.conn.tId)) { |
| 2352 |
YAHOO.log("Ignored stale response", "warn", this.toString()); |
| 2353 |
return null; |
| 2354 |
} |
| 2355 |
// Error if no response |
| 2356 |
else if(!oResponse) { |
| 2357 |
this.fireEvent("dataErrorEvent", {request:oRequest, response:null, |
| 2358 |
callback:oCallback, caller:oCaller, |
| 2359 |
message:DS.ERROR_DATANULL}); |
| 2360 |
YAHOO.log(DS.ERROR_DATANULL, "error", this.toString()); |
| 2361 |
|
| 2362 |
// Send error response back to the caller with the error flag on |
| 2363 |
DS.issueCallback(oCallback,[oRequest, {error:true}], true, oCaller); |
| 2364 |
|
| 2365 |
return null; |
| 2366 |
} |
| 2367 |
// Forward to handler |
| 2368 |
else { |
| 2369 |
// Try to sniff data type if it has not been defined |
| 2370 |
if(this.responseType === DS.TYPE_UNKNOWN) { |
| 2371 |
var ctype = (oResponse.getResponseHeader) ? oResponse.getResponseHeader["Content-Type"] : null; |
| 2372 |
if(ctype) { |
| 2373 |
// xml |
| 2374 |
if(ctype.indexOf("text/xml") > -1) { |
| 2375 |
this.responseType = DS.TYPE_XML; |
| 2376 |
} |
| 2377 |
else if(ctype.indexOf("application/json") > -1) { // json |
| 2378 |
this.responseType = DS.TYPE_JSON; |
| 2379 |
} |
| 2380 |
else if(ctype.indexOf("text/plain") > -1) { // text |
| 2381 |
this.responseType = DS.TYPE_TEXT; |
| 2382 |
} |
| 2383 |
} |
| 2384 |
} |
| 2385 |
this.handleResponse(oRequest, oResponse, oCallback, oCaller, tId); |
| 2386 |
} |
| 2387 |
}; |
| 2388 |
|
| 2389 |
/** |
| 2390 |
* Define Connection Manager failure handler |
| 2391 |
* |
| 2392 |
* @method _xhrFailure |
| 2393 |
* @param oResponse {Object} HTTPXMLRequest object |
| 2394 |
* @private |
| 2395 |
*/ |
| 2396 |
var _xhrFailure = function(oResponse) { |
| 2397 |
this.fireEvent("dataErrorEvent", {request:oRequest, response: oResponse, |
| 2398 |
callback:oCallback, caller:oCaller, |
| 2399 |
message:DS.ERROR_DATAINVALID}); |
| 2400 |
YAHOO.log(DS.ERROR_DATAINVALID + ": " + |
| 2401 |
oResponse.statusText, "error", this.toString()); |
| 2402 |
|
| 2403 |
// Backward compatibility |
| 2404 |
if(lang.isString(this.liveData) && lang.isString(oRequest) && |
| 2405 |
(this.liveData.lastIndexOf("?") !== this.liveData.length-1) && |
| 2406 |
(oRequest.indexOf("?") !== 0)){ |
| 2407 |
YAHOO.log("DataSources using XHR no longer automatically supply " + |
| 2408 |
"a \"?\" between the host and query parameters" + |
| 2409 |
" -- please check that the request URL is correct", "warn", this.toString()); |
| 2410 |
} |
| 2411 |
|
| 2412 |
// Send failure response back to the caller with the error flag on |
| 2413 |
oResponse = oResponse || {}; |
| 2414 |
oResponse.error = true; |
| 2415 |
DS.issueCallback(oCallback,[oRequest,oResponse],true, oCaller); |
| 2416 |
|
| 2417 |
return null; |
| 2418 |
}; |
| 2419 |
|
| 2420 |
/** |
| 2421 |
* Define Connection Manager callback object |
| 2422 |
* |
| 2423 |
* @property _xhrCallback |
| 2424 |
* @param oResponse {Object} HTTPXMLRequest object |
| 2425 |
* @private |
| 2426 |
*/ |
| 2427 |
var _xhrCallback = { |
| 2428 |
success:_xhrSuccess, |
| 2429 |
failure:_xhrFailure, |
| 2430 |
scope: this |
| 2431 |
}; |
| 2432 |
|
| 2433 |
// Apply Connection Manager timeout |
| 2434 |
if(lang.isNumber(this.connTimeout)) { |
| 2435 |
_xhrCallback.timeout = this.connTimeout; |
| 2436 |
} |
| 2437 |
|
| 2438 |
// Cancel stale requests |
| 2439 |
if(this.connXhrMode == "cancelStaleRequests") { |
| 2440 |
// Look in queue for stale requests |
| 2441 |
if(oQueue.conn) { |
| 2442 |
if(oConnMgr.abort) { |
| 2443 |
oConnMgr.abort(oQueue.conn); |
| 2444 |
oQueue.conn = null; |
| 2445 |
YAHOO.log("Canceled stale request", "warn", this.toString()); |
| 2446 |
} |
| 2447 |
else { |
| 2448 |
YAHOO.log("Could not find Connection Manager abort() function", "error", this.toString()); |
| 2449 |
} |
| 2450 |
} |
| 2451 |
} |
| 2452 |
|
| 2453 |
// Get ready to send the request URL |
| 2454 |
if(oConnMgr && oConnMgr.asyncRequest) { |
| 2455 |
var sLiveData = this.liveData; |
| 2456 |
var isPost = this.connMethodPost; |
| 2457 |
var sMethod = (isPost) ? "POST" : "GET"; |
| 2458 |
// Validate request |
| 2459 |
var sUri = (isPost || !lang.isValue(oRequest)) ? sLiveData : sLiveData+oRequest; |
| 2460 |
var sRequest = (isPost) ? oRequest : null; |
| 2461 |
|
| 2462 |
// Send the request right away |
| 2463 |
if(this.connXhrMode != "queueRequests") { |
| 2464 |
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest); |
| 2465 |
} |
| 2466 |
// Queue up then send the request |
| 2467 |
else { |
| 2468 |
// Found a request already in progress |
| 2469 |
if(oQueue.conn) { |
| 2470 |
var allRequests = oQueue.requests; |
| 2471 |
// Add request to queue |
| 2472 |
allRequests.push({request:oRequest, callback:_xhrCallback}); |
| 2473 |
|
| 2474 |
// Interval needs to be started |
| 2475 |
if(!oQueue.interval) { |
| 2476 |
oQueue.interval = setInterval(function() { |
| 2477 |
// Connection is in progress |
| 2478 |
if(oConnMgr.isCallInProgress(oQueue.conn)) { |
| 2479 |
return; |
| 2480 |
} |
| 2481 |
else { |
| 2482 |
// Send next request |
| 2483 |
if(allRequests.length > 0) { |
| 2484 |
// Validate request |
| 2485 |
sUri = (isPost || !lang.isValue(allRequests[0].request)) ? sLiveData : sLiveData+allRequests[0].request; |
| 2486 |
sRequest = (isPost) ? allRequests[0].request : null; |
| 2487 |
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, allRequests[0].callback, sRequest); |
| 2488 |
|
| 2489 |
// Remove request from queue |
| 2490 |
allRequests.shift(); |
| 2491 |
} |
| 2492 |
// No more requests |
| 2493 |
else { |
| 2494 |
clearInterval(oQueue.interval); |
| 2495 |
oQueue.interval = null; |
| 2496 |
} |
| 2497 |
} |
| 2498 |
}, 50); |
| 2499 |
} |
| 2500 |
} |
| 2501 |
// Nothing is in progress |
| 2502 |
else { |
| 2503 |
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest); |
| 2504 |
} |
| 2505 |
} |
| 2506 |
} |
| 2507 |
else { |
| 2508 |
YAHOO.log("Could not find Connection Manager asyncRequest() function", "error", this.toString()); |
| 2509 |
// Send null response back to the caller with the error flag on |
| 2510 |
DS.issueCallback(oCallback,[oRequest,{error:true}],true,oCaller); |
| 2511 |
} |
| 2512 |
|
| 2513 |
return tId; |
| 2514 |
} |
| 2515 |
|
| 2516 |
}); |
| 2517 |
|
| 2518 |
// Copy static members to XHRDataSource class |
| 2519 |
lang.augmentObject(util.XHRDataSource, DS); |
| 2520 |
|
| 2521 |
|
| 2522 |
|
| 2523 |
|
| 2524 |
|
| 2525 |
|
| 2526 |
|
| 2527 |
|
| 2528 |
|
| 2529 |
|
| 2530 |
|
| 2531 |
|
| 2532 |
|
| 2533 |
/****************************************************************************/ |
| 2534 |
/****************************************************************************/ |
| 2535 |
/****************************************************************************/ |
| 2536 |
|
| 2537 |
/** |
| 2538 |
* Factory class for creating a BaseDataSource subclass instance. The sublcass is |
| 2539 |
* determined by oLiveData's type, unless the dataType config is explicitly passed in. |
| 2540 |
* |
| 2541 |
* @namespace YAHOO.util |
| 2542 |
* @class YAHOO.util.DataSource |
| 2543 |
* @constructor |
| 2544 |
* @param oLiveData {HTMLElement} Pointer to live data. |
| 2545 |
* @param oConfigs {object} (optional) Object literal of configuration values. |
| 2546 |
*/ |
| 2547 |
util.DataSource = function(oLiveData, oConfigs) { |
| 2548 |
oConfigs = oConfigs || {}; |
| 2549 |
|
| 2550 |
// Point to one of the subclasses, first by dataType if given, then by sniffing oLiveData type. |
| 2551 |
var dataType = oConfigs.dataType; |
| 2552 |
if(dataType) { |
| 2553 |
if(dataType == DS.TYPE_LOCAL) { |
| 2554 |
lang.augmentObject(util.DataSource, util.LocalDataSource); |
| 2555 |
return new util.LocalDataSource(oLiveData, oConfigs); |
| 2556 |
} |
| 2557 |
else if(dataType == DS.TYPE_XHR) { |
| 2558 |
lang.augmentObject(util.DataSource, util.XHRDataSource); |
| 2559 |
return new util.XHRDataSource(oLiveData, oConfigs); |
| 2560 |
} |
| 2561 |
else if(dataType == DS.TYPE_SCRIPTNODE) { |
| 2562 |
lang.augmentObject(util.DataSource, util.ScriptNodeDataSource); |
| 2563 |
return new util.ScriptNodeDataSource(oLiveData, oConfigs); |
| 2564 |
} |
| 2565 |
else if(dataType == DS.TYPE_JSFUNCTION) { |
| 2566 |
lang.augmentObject(util.DataSource, util.FunctionDataSource); |
| 2567 |
return new util.FunctionDataSource(oLiveData, oConfigs); |
| 2568 |
} |
| 2569 |
} |
| 2570 |
|
| 2571 |
if(YAHOO.lang.isString(oLiveData)) { // strings default to xhr |
| 2572 |
lang.augmentObject(util.DataSource, util.XHRDataSource); |
| 2573 |
return new util.XHRDataSource(oLiveData, oConfigs); |
| 2574 |
} |
| 2575 |
else if(YAHOO.lang.isFunction(oLiveData)) { |
| 2576 |
lang.augmentObject(util.DataSource, util.FunctionDataSource); |
| 2577 |
return new util.FunctionDataSource(oLiveData, oConfigs); |
| 2578 |
} |
| 2579 |
else { // ultimate default is local |
| 2580 |
lang.augmentObject(util.DataSource, util.LocalDataSource); |
| 2581 |
return new util.LocalDataSource(oLiveData, oConfigs); |
| 2582 |
} |
| 2583 |
}; |
| 2584 |
|
| 2585 |
// Copy static members to DataSource class |
| 2586 |
lang.augmentObject(util.DataSource, DS); |
| 2587 |
|
| 2588 |
})(); |
| 2589 |
|
| 2590 |
/****************************************************************************/ |
| 2591 |
/****************************************************************************/ |
| 2592 |
/****************************************************************************/ |
| 2593 |
|
| 2594 |
/** |
| 2595 |
* The static Number class provides helper functions to deal with data of type |
| 2596 |
* Number. |
| 2597 |
* |
| 2598 |
* @namespace YAHOO.util |
| 2599 |
* @requires yahoo |
| 2600 |
* @class Number |
| 2601 |
* @static |
| 2602 |
*/ |
| 2603 |
YAHOO.util.Number = { |
| 2604 |
|
| 2605 |
/** |
| 2606 |
* Takes a native JavaScript Number and formats to string for display to user. |
| 2607 |
* |
| 2608 |
* @method format |
| 2609 |
* @param nData {Number} Number. |
| 2610 |
* @param oConfig {Object} (Optional) Optional configuration values: |
| 2611 |
* <dl> |
| 2612 |
* <dt>prefix {String}</dd> |
| 2613 |
* <dd>String prepended before each number, like a currency designator "$"</dd> |
| 2614 |
* <dt>decimalPlaces {Number}</dd> |
| 2615 |
* <dd>Number of decimal places to round.</dd> |
| 2616 |
* <dt>decimalSeparator {String}</dd> |
| 2617 |
* <dd>Decimal separator</dd> |
| 2618 |
* <dt>thousandsSeparator {String}</dd> |
| 2619 |
* <dd>Thousands separator</dd> |
| 2620 |
* <dt>suffix {String}</dd> |
| 2621 |
* <dd>String appended after each number, like " items" (note the space)</dd> |
| 2622 |
* <dt>negativeFormat</dt> |
| 2623 |
* <dd>String used as a guide for how to indicate negative numbers. The first '#' character in the string will be replaced by the number. Default '-#'.</dd> |
| 2624 |
* </dl> |
| 2625 |
* @return {String} Formatted number for display. Note, the following values |
| 2626 |
* return as "": null, undefined, NaN, "". |
| 2627 |
*/ |
| 2628 |
format : function(n, cfg) { |
| 2629 |
if (!isFinite(+n)) { |
| 2630 |
return ''; |
| 2631 |
} |
| 2632 |
|
| 2633 |
n = !isFinite(+n) ? 0 : +n; |
| 2634 |
cfg = YAHOO.lang.merge(YAHOO.util.Number.format.defaults, (cfg || {})); |
| 2635 |
|
| 2636 |
var neg = n < 0, absN = Math.abs(n), |
| 2637 |
places = cfg.decimalPlaces, |
| 2638 |
sep = cfg.thousandsSeparator, |
| 2639 |
s, bits, i; |
| 2640 |
|
| 2641 |
if (places < 0) { |
| 2642 |
// Get rid of the decimal info |
| 2643 |
s = absN - (absN % 1) + ''; |
| 2644 |
i = s.length + places; |
| 2645 |
|
| 2646 |
// avoid 123 vs decimalPlaces -4 (should return "0") |
| 2647 |
if (i > 0) { |
| 2648 |
// leverage toFixed by making 123 => 0.123 for the rounding |
| 2649 |
// operation, then add the appropriate number of zeros back on |
| 2650 |
s = Number('.' + s).toFixed(i).slice(2) + |
| 2651 |
new Array(s.length - i + 1).join('0'); |
| 2652 |
} else { |
| 2653 |
s = "0"; |
| 2654 |
} |
| 2655 |
} else { // There is a bug in IE's toFixed implementation: |
| 2656 |
// for n in {(-0.94, -0.5], [0.5, 0.94)} n.toFixed() returns 0 |
| 2657 |
// instead of -1 and 1. Manually handle that case. |
| 2658 |
s = absN < 1 && absN >= 0.5 && !places ? '1' : absN.toFixed(places); |
| 2659 |
} |
| 2660 |
|
| 2661 |
if (absN > 1000) { |
| 2662 |
bits = s.split(/\D/); |
| 2663 |
i = bits[0].length % 3 || 3; |
| 2664 |
|
| 2665 |
bits[0] = bits[0].slice(0,i) + |
| 2666 |
bits[0].slice(i).replace(/(\d{3})/g, sep + '$1'); |
| 2667 |
|
| 2668 |
s = bits.join(cfg.decimalSeparator); |
| 2669 |
} |
| 2670 |
|
| 2671 |
s = cfg.prefix + s + cfg.suffix; |
| 2672 |
|
| 2673 |
return neg ? cfg.negativeFormat.replace(/#/,s) : s; |
| 2674 |
} |
| 2675 |
}; |
| 2676 |
YAHOO.util.Number.format.defaults = { |
| 2677 |
decimalSeparator : '.', |
| 2678 |
decimalPlaces : null, |
| 2679 |
thousandsSeparator : '', |
| 2680 |
prefix : '', |
| 2681 |
suffix : '', |
| 2682 |
negativeFormat : '-#' |
| 2683 |
}; |
| 2684 |
|
| 2685 |
|
| 2686 |
/****************************************************************************/ |
| 2687 |
/****************************************************************************/ |
| 2688 |
/****************************************************************************/ |
| 2689 |
|
| 2690 |
(function () { |
| 2691 |
|
| 2692 |
var xPad=function (x, pad, r) |
| 2693 |
{ |
| 2694 |
if(typeof r === 'undefined') |
| 2695 |
{ |
| 2696 |
r=10; |
| 2697 |
} |
| 2698 |
for( ; parseInt(x, 10)<r && r>1; r/=10) { |
| 2699 |
x = pad.toString() + x; |
| 2700 |
} |
| 2701 |
return x.toString(); |
| 2702 |
}; |
| 2703 |
|
| 2704 |
|
| 2705 |
/** |
| 2706 |
* The static Date class provides helper functions to deal with data of type Date. |
| 2707 |
* |
| 2708 |
* @namespace YAHOO.util |
| 2709 |
* @requires yahoo |
| 2710 |
* @class Date |
| 2711 |
* @static |
| 2712 |
*/ |
| 2713 |
var Dt = { |
| 2714 |
formats: { |
| 2715 |
a: function (d, l) { return l.a[d.getDay()]; }, |
| 2716 |
A: function (d, l) { return l.A[d.getDay()]; }, |
| 2717 |
b: function (d, l) { return l.b[d.getMonth()]; }, |
| 2718 |
B: function (d, l) { return l.B[d.getMonth()]; }, |
| 2719 |
C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); }, |
| 2720 |
d: ['getDate', '0'], |
| 2721 |
e: ['getDate', ' '], |
| 2722 |
g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); }, |
| 2723 |
G: function (d) { |
| 2724 |
var y = d.getFullYear(); |
| 2725 |
var V = parseInt(Dt.formats.V(d), 10); |
| 2726 |
var W = parseInt(Dt.formats.W(d), 10); |
| 2727 |
|
| 2728 |
if(W > V) { |
| 2729 |
y++; |
| 2730 |
} else if(W===0 && V>=52) { |
| 2731 |
y--; |
| 2732 |
} |
| 2733 |
|
| 2734 |
return y; |
| 2735 |
}, |
| 2736 |
H: ['getHours', '0'], |
| 2737 |
I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); }, |
| 2738 |
j: function (d) { |
| 2739 |
var gmd_1 = new Date('' + d.getFullYear() + '/1/1 GMT'); |
| 2740 |
var gmdate = new Date('' + d.getFullYear() + '/' + (d.getMonth()+1) + '/' + d.getDate() + ' GMT'); |
| 2741 |
var ms = gmdate - gmd_1; |
| 2742 |
var doy = parseInt(ms/60000/60/24, 10)+1; |
| 2743 |
return xPad(doy, 0, 100); |
| 2744 |
}, |
| 2745 |
k: ['getHours', ' '], |
| 2746 |
l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, ' '); }, |
| 2747 |
m: function (d) { return xPad(d.getMonth()+1, 0); }, |
| 2748 |
M: ['getMinutes', '0'], |
| 2749 |
p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; }, |
| 2750 |
P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; }, |
| 2751 |
s: function (d, l) { return parseInt(d.getTime()/1000, 10); }, |
| 2752 |
S: ['getSeconds', '0'], |
| 2753 |
u: function (d) { var dow = d.getDay(); return dow===0?7:dow; }, |
| 2754 |
U: function (d) { |
| 2755 |
var doy = parseInt(Dt.formats.j(d), 10); |
| 2756 |
var rdow = 6-d.getDay(); |
| 2757 |
var woy = parseInt((doy+rdow)/7, 10); |
| 2758 |
return xPad(woy, 0); |
| 2759 |
}, |
| 2760 |
V: function (d) { |
| 2761 |
var woy = parseInt(Dt.formats.W(d), 10); |
| 2762 |
var dow1_1 = (new Date('' + d.getFullYear() + '/1/1')).getDay(); |
| 2763 |
// First week is 01 and not 00 as in the case of %U and %W, |
| 2764 |
// so we add 1 to the final result except if day 1 of the year |
| 2765 |
// is a Monday (then %W returns 01). |
| 2766 |
// We also need to subtract 1 if the day 1 of the year is |
| 2767 |
// Friday-Sunday, so the resulting equation becomes: |
| 2768 |
var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1); |
| 2769 |
if(idow === 53 && (new Date('' + d.getFullYear() + '/12/31')).getDay() < 4) |
| 2770 |
{ |
| 2771 |
idow = 1; |
| 2772 |
} |
| 2773 |
else if(idow === 0) |
| 2774 |
{ |
| 2775 |
idow = Dt.formats.V(new Date('' + (d.getFullYear()-1) + '/12/31')); |
| 2776 |
} |
| 2777 |
|
| 2778 |
return xPad(idow, 0); |
| 2779 |
}, |
| 2780 |
w: 'getDay', |
| 2781 |
W: function (d) { |
| 2782 |
var doy = parseInt(Dt.formats.j(d), 10); |
| 2783 |
var rdow = 7-Dt.formats.u(d); |
| 2784 |
var woy = parseInt((doy+rdow)/7, 10); |
| 2785 |
return xPad(woy, 0, 10); |
| 2786 |
}, |
| 2787 |
y: function (d) { return xPad(d.getFullYear()%100, 0); }, |
| 2788 |
Y: 'getFullYear', |
| 2789 |
z: function (d) { |
| 2790 |
var o = d.getTimezoneOffset(); |
| 2791 |
var H = xPad(parseInt(Math.abs(o/60), 10), 0); |
| 2792 |
var M = xPad(Math.abs(o%60), 0); |
| 2793 |
return (o>0?'-':'+') + H + M; |
| 2794 |
}, |
| 2795 |
Z: function (d) { |
| 2796 |
var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, '$2').replace(/[a-z ]/g, ''); |
| 2797 |
if(tz.length > 4) { |
| 2798 |
tz = Dt.formats.z(d); |
| 2799 |
} |
| 2800 |
return tz; |
| 2801 |
}, |
| 2802 |
'%': function (d) { return '%'; } |
| 2803 |
}, |
| 2804 |
|
| 2805 |
aggregates: { |
| 2806 |
c: 'locale', |
| 2807 |
D: '%m/%d/%y', |
| 2808 |
F: '%Y-%m-%d', |
| 2809 |
h: '%b', |
| 2810 |
n: '\n', |
| 2811 |
r: 'locale', |
| 2812 |
R: '%H:%M', |
| 2813 |
t: '\t', |
| 2814 |
T: '%H:%M:%S', |
| 2815 |
x: 'locale', |
| 2816 |
X: 'locale' |
| 2817 |
//'+': '%a %b %e %T %Z %Y' |
| 2818 |
}, |
| 2819 |
|
| 2820 |
/** |
| 2821 |
* Takes a native JavaScript Date and formats to string for display to user. |
| 2822 |
* |
| 2823 |
* @method format |
| 2824 |
* @param oDate {Date} Date. |
| 2825 |
* @param oConfig {Object} (Optional) Object literal of configuration values: |
| 2826 |
* <dl> |
| 2827 |
* <dt>format <String></dt> |
| 2828 |
* <dd> |
| 2829 |
* <p> |
| 2830 |
* Any strftime string is supported, such as "%I:%M:%S %p". strftime has several format specifiers defined by the Open group at |
| 2831 |
* <a href="http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html">http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html</a> |
| 2832 |
* </p> |
| 2833 |
* <p> |
| 2834 |
* PHP added a few of its own, defined at <a href="http://www.php.net/strftime">http://www.php.net/strftime</a> |
| 2835 |
* </p> |
| 2836 |
* <p> |
| 2837 |
* This javascript implementation supports all the PHP specifiers and a few more. The full list is below: |
| 2838 |
* </p> |
| 2839 |
* <dl> |
| 2840 |
* <dt>%a</dt> <dd>abbreviated weekday name according to the current locale</dd> |
| 2841 |
* <dt>%A</dt> <dd>full weekday name according to the current locale</dd> |
| 2842 |
* <dt>%b</dt> <dd>abbreviated month name according to the current locale</dd> |
| 2843 |
* <dt>%B</dt> <dd>full month name according to the current locale</dd> |
| 2844 |
* <dt>%c</dt> <dd>preferred date and time representation for the current locale</dd> |
| 2845 |
* <dt>%C</dt> <dd>century number (the year divided by 100 and truncated to an integer, range 00 to 99)</dd> |
| 2846 |
* <dt>%d</dt> <dd>day of the month as a decimal number (range 01 to 31)</dd> |
| 2847 |
* <dt>%D</dt> <dd>same as %m/%d/%y</dd> |
| 2848 |
* <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> |
| 2849 |
* <dt>%F</dt> <dd>same as %Y-%m-%d (ISO 8601 date format)</dd> |
| 2850 |
* <dt>%g</dt> <dd>like %G, but without the century</dd> |
| 2851 |
* <dt>%G</dt> <dd>The 4-digit year corresponding to the ISO week number</dd> |
| 2852 |
* <dt>%h</dt> <dd>same as %b</dd> |
| 2853 |
* <dt>%H</dt> <dd>hour as a decimal number using a 24-hour clock (range 00 to 23)</dd> |
| 2854 |
* <dt>%I</dt> <dd>hour as a decimal number using a 12-hour clock (range 01 to 12)</dd> |
| 2855 |
* <dt>%j</dt> <dd>day of the year as a decimal number (range 001 to 366)</dd> |
| 2856 |
* <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> |
| 2857 |
* <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> |
| 2858 |
* <dt>%m</dt> <dd>month as a decimal number (range 01 to 12)</dd> |
| 2859 |
* <dt>%M</dt> <dd>minute as a decimal number</dd> |
| 2860 |
* <dt>%n</dt> <dd>newline character</dd> |
| 2861 |
* <dt>%p</dt> <dd>either `AM' or `PM' according to the given time value, or the corresponding strings for the current locale</dd> |
| 2862 |
* <dt>%P</dt> <dd>like %p, but lower case</dd> |
| 2863 |
* <dt>%r</dt> <dd>time in a.m. and p.m. notation equal to %I:%M:%S %p</dd> |
| 2864 |
* <dt>%R</dt> <dd>time in 24 hour notation equal to %H:%M</dd> |
| 2865 |
* <dt>%s</dt> <dd>number of seconds since the Epoch, ie, since 1970-01-01 00:00:00 UTC</dd> |
| 2866 |
* <dt>%S</dt> <dd>second as a decimal number</dd> |
| 2867 |
* <dt>%t</dt> <dd>tab character</dd> |
| 2868 |
* <dt>%T</dt> <dd>current time, equal to %H:%M:%S</dd> |
| 2869 |
* <dt>%u</dt> <dd>weekday as a decimal number [1,7], with 1 representing Monday</dd> |
| 2870 |
* <dt>%U</dt> <dd>week number of the current year as a decimal number, starting with the |
| 2871 |
* first Sunday as the first day of the first week</dd> |
| 2872 |
* <dt>%V</dt> <dd>The ISO 8601:1988 week number of the current year as a decimal number, |
| 2873 |
* range 01 to 53, where week 1 is the first week that has at least 4 days |
| 2874 |
* in the current year, and with Monday as the first day of the week.</dd> |
| 2875 |
* <dt>%w</dt> <dd>day of the week as a decimal, Sunday being 0</dd> |
| 2876 |
* <dt>%W</dt> <dd>week number of the current year as a decimal number, starting with the |
| 2877 |
* first Monday as the first day of the first week</dd> |
| 2878 |
* <dt>%x</dt> <dd>preferred date representation for the current locale without the time</dd> |
| 2879 |
* <dt>%X</dt> <dd>preferred time representation for the current locale without the date</dd> |
| 2880 |
* <dt>%y</dt> <dd>year as a decimal number without a century (range 00 to 99)</dd> |
| 2881 |
* <dt>%Y</dt> <dd>year as a decimal number including the century</dd> |
| 2882 |
* <dt>%z</dt> <dd>numerical time zone representation</dd> |
| 2883 |
* <dt>%Z</dt> <dd>time zone name or abbreviation</dd> |
| 2884 |
* <dt>%%</dt> <dd>a literal `%' character</dd> |
| 2885 |
* </dl> |
| 2886 |
* </dd> |
| 2887 |
* </dl> |
| 2888 |
* @param sLocale {String} (Optional) The locale to use when displaying days of week, |
| 2889 |
* months of the year, and other locale specific strings. The following locales are |
| 2890 |
* built in: |
| 2891 |
* <dl> |
| 2892 |
* <dt>en</dt> |
| 2893 |
* <dd>English</dd> |
| 2894 |
* <dt>en-US</dt> |
| 2895 |
* <dd>US English</dd> |
| 2896 |
* <dt>en-GB</dt> |
| 2897 |
* <dd>British English</dd> |
| 2898 |
* <dt>en-AU</dt> |
| 2899 |
* <dd>Australian English (identical to British English)</dd> |
| 2900 |
* </dl> |
| 2901 |
* More locales may be added by subclassing of YAHOO.util.DateLocale. |
| 2902 |
* See YAHOO.util.DateLocale for more information. |
| 2903 |
* @return {String} Formatted date for display. |
| 2904 |
* @sa YAHOO.util.DateLocale |
| 2905 |
*/ |
| 2906 |
format : function (oDate, oConfig, sLocale) { |
| 2907 |
oConfig = oConfig || {}; |
| 2908 |
|
| 2909 |
if(!(oDate instanceof Date)) { |
| 2910 |
return YAHOO.lang.isValue(oDate) ? oDate : ""; |
| 2911 |
} |
| 2912 |
|
| 2913 |
var format = oConfig.format || "%m/%d/%Y"; |
| 2914 |
|
| 2915 |
// Be backwards compatible, support strings that are |
| 2916 |
// exactly equal to YYYY/MM/DD, DD/MM/YYYY and MM/DD/YYYY |
| 2917 |
if(format === 'YYYY/MM/DD') { |
| 2918 |
format = '%Y/%m/%d'; |
| 2919 |
} else if(format === 'DD/MM/YYYY') { |
| 2920 |
format = '%d/%m/%Y'; |
| 2921 |
} else if(format === 'MM/DD/YYYY') { |
| 2922 |
format = '%m/%d/%Y'; |
| 2923 |
} |
| 2924 |
// end backwards compatibility block |
| 2925 |
|
| 2926 |
sLocale = sLocale || "en"; |
| 2927 |
|
| 2928 |
// Make sure we have a definition for the requested locale, or default to en. |
| 2929 |
if(!(sLocale in YAHOO.util.DateLocale)) { |
| 2930 |
if(sLocale.replace(/-[a-zA-Z]+$/, '') in YAHOO.util.DateLocale) { |
| 2931 |
sLocale = sLocale.replace(/-[a-zA-Z]+$/, ''); |
| 2932 |
} else { |
| 2933 |
sLocale = "en"; |
| 2934 |
} |
| 2935 |
} |
| 2936 |
|
| 2937 |
var aLocale = YAHOO.util.DateLocale[sLocale]; |
| 2938 |
|
| 2939 |
var replace_aggs = function (m0, m1) { |
| 2940 |
var f = Dt.aggregates[m1]; |
| 2941 |
return (f === 'locale' ? aLocale[m1] : f); |
| 2942 |
}; |
| 2943 |
|
| 2944 |
var replace_formats = function (m0, m1) { |
| 2945 |
var f = Dt.formats[m1]; |
| 2946 |
if(typeof f === 'string') { // string => built in date function |
| 2947 |
return oDate[f](); |
| 2948 |
} else if(typeof f === 'function') { // function => our own function |
| 2949 |
return f.call(oDate, oDate, aLocale); |
| 2950 |
} else if(typeof f === 'object' && typeof f[0] === 'string') { // built in function with padding |
| 2951 |
return xPad(oDate[f[0]](), f[1]); |
| 2952 |
} else { |
| 2953 |
return m1; |
| 2954 |
} |
| 2955 |
}; |
| 2956 |
|
| 2957 |
// First replace aggregates (run in a loop because an agg may be made up of other aggs) |
| 2958 |
while(format.match(/%[cDFhnrRtTxX]/)) { |
| 2959 |
format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs); |
| 2960 |
} |
| 2961 |
|
| 2962 |
// Now replace formats (do not run in a loop otherwise %%a will be replace with the value of %a) |
| 2963 |
var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats); |
| 2964 |
|
| 2965 |
replace_aggs = replace_formats = undefined; |
| 2966 |
|
| 2967 |
return str; |
| 2968 |
} |
| 2969 |
}; |
| 2970 |
|
| 2971 |
YAHOO.namespace("YAHOO.util"); |
| 2972 |
YAHOO.util.Date = Dt; |
| 2973 |
|
| 2974 |
/** |
| 2975 |
* The DateLocale class is a container and base class for all |
| 2976 |
* localised date strings used by YAHOO.util.Date. It is used |
| 2977 |
* internally, but may be extended to provide new date localisations. |
| 2978 |
* |
| 2979 |
* To create your own DateLocale, follow these steps: |
| 2980 |
* <ol> |
| 2981 |
* <li>Find an existing locale that matches closely with your needs</li> |
| 2982 |
* <li>Use this as your base class. Use YAHOO.util.DateLocale if nothing |
| 2983 |
* matches.</li> |
| 2984 |
* <li>Create your own class as an extension of the base class using |
| 2985 |
* YAHOO.lang.merge, and add your own localisations where needed.</li> |
| 2986 |
* </ol> |
| 2987 |
* See the YAHOO.util.DateLocale['en-US'] and YAHOO.util.DateLocale['en-GB'] |
| 2988 |
* classes which extend YAHOO.util.DateLocale['en']. |
| 2989 |
* |
| 2990 |
* For example, to implement locales for French french and Canadian french, |
| 2991 |
* we would do the following: |
| 2992 |
* <ol> |
| 2993 |
* <li>For French french, we have no existing similar locale, so use |
| 2994 |
* YAHOO.util.DateLocale as the base, and extend it: |
| 2995 |
* <pre> |
| 2996 |
* YAHOO.util.DateLocale['fr'] = YAHOO.lang.merge(YAHOO.util.DateLocale, { |
| 2997 |
* a: ['dim', 'lun', 'mar', 'mer', 'jeu', 'ven', 'sam'], |
| 2998 |
* A: ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi'], |
| 2999 |
* b: ['jan', 'fév', 'mar', 'avr', 'mai', 'jun', 'jui', 'aoû', 'sep', 'oct', 'nov', 'déc'], |
| 3000 |
* B: ['janvier', 'février', 'mars', 'avril', 'mai', 'juin', 'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'], |
| 3001 |
* c: '%a %d %b %Y %T %Z', |
| 3002 |
* p: ['', ''], |
| 3003 |
* P: ['', ''], |
| 3004 |
* x: '%d.%m.%Y', |
| 3005 |
* X: '%T' |
| 3006 |
* }); |
| 3007 |
* </pre> |
| 3008 |
* </li> |
| 3009 |
* <li>For Canadian french, we start with French french and change the meaning of \%x: |
| 3010 |
* <pre> |
| 3011 |
* YAHOO.util.DateLocale['fr-CA'] = YAHOO.lang.merge(YAHOO.util.DateLocale['fr'], { |
| 3012 |
* x: '%Y-%m-%d' |
| 3013 |
* }); |
| 3014 |
* </pre> |
| 3015 |
* </li> |
| 3016 |
* </ol> |
| 3017 |
* |
| 3018 |
* With that, you can use your new locales: |
| 3019 |
* <pre> |
| 3020 |
* var d = new Date("2008/04/22"); |
| 3021 |
* YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr"); |
| 3022 |
* </pre> |
| 3023 |
* will return: |
| 3024 |
* <pre> |
| 3025 |
* mardi, 22 avril == 22.04.2008 |
| 3026 |
* </pre> |
| 3027 |
* And |
| 3028 |
* <pre> |
| 3029 |
* YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr-CA"); |
| 3030 |
* </pre> |
| 3031 |
* Will return: |
| 3032 |
* <pre> |
| 3033 |
* mardi, 22 avril == 2008-04-22 |
| 3034 |
* </pre> |
| 3035 |
* @namespace YAHOO.util |
| 3036 |
* @requires yahoo |
| 3037 |
* @class DateLocale |
| 3038 |
*/ |
| 3039 |
YAHOO.util.DateLocale = { |
| 3040 |
a: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], |
| 3041 |
A: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], |
| 3042 |
b: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], |
| 3043 |
B: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'], |
| 3044 |
c: '%a %d %b %Y %T %Z', |
| 3045 |
p: ['AM', 'PM'], |
| 3046 |
P: ['am', 'pm'], |
| 3047 |
r: '%I:%M:%S %p', |
| 3048 |
x: '%d/%m/%y', |
| 3049 |
X: '%T' |
| 3050 |
}; |
| 3051 |
|
| 3052 |
YAHOO.util.DateLocale['en'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {}); |
| 3053 |
|
| 3054 |
YAHOO.util.DateLocale['en-US'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], { |
| 3055 |
c: '%a %d %b %Y %I:%M:%S %p %Z', |
| 3056 |
x: '%m/%d/%Y', |
| 3057 |
X: '%I:%M:%S %p' |
| 3058 |
}); |
| 3059 |
|
| 3060 |
YAHOO.util.DateLocale['en-GB'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], { |
| 3061 |
r: '%l:%M:%S %P %Z' |
| 3062 |
}); |
| 3063 |
YAHOO.util.DateLocale['en-AU'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en']); |
| 3064 |
|
| 3065 |
})(); |
| 3066 |
|
| 3067 |
YAHOO.register("datasource", YAHOO.util.DataSource, {version: "2.8.0r4", build: "2449"}); |