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/*
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Copyright (c) 2010, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.com/yui/license.html
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version: 2.8.2r1
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*/
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(function () {
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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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* 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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* 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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return;
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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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// 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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// 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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// Initialize interval tracker
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this._aIntervals = [];
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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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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var DS = util.DataSourceBase;
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this._sName = "DataSource instance" + DS._nIndex;
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DS._nIndex++;
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};
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var DS = util.DataSourceBase;
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lang.augmentObject(DS, {
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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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* 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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* Error message for null data responses.
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*
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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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//
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// DataSourceBase private static properties
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//
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/////////////////////////////////////////////////////////////////////////////
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/**
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* Internal class variable to index multiple DataSource instances.
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*
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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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* Internal class variable to assign unique transaction IDs.
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*
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* @property DataSourceBase._nTransactionId
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* @type Number
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* @private
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* @static
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*/
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_nTransactionId : 0,
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/////////////////////////////////////////////////////////////////////////////
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//
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// DataSourceBase private static methods
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//
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/////////////////////////////////////////////////////////////////////////////
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/**
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* Get an XPath-specified value for a given field from an XML node or document.
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*
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* @method _getLocationValue
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* @param field {String | Object} Field definition.
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* @param context {Object} XML node or document to search within.
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* @return {Object} Data value or null.
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* @static
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* @private
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*/
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_getLocationValue: function(field, context) {
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var locator = field.locator || field.key || field,
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xmldoc = context.ownerDocument || context,
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result, res, value = null;
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try {
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// Standards mode
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if(!lang.isUndefined(xmldoc.evaluate)) {
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result = xmldoc.evaluate(locator, context, xmldoc.createNSResolver(!context.ownerDocument ? context.documentElement : context.ownerDocument.documentElement), 0, null);
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while(res = result.iterateNext()) {
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value = res.textContent;
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}
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}
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// IE mode
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else {
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xmldoc.setProperty("SelectionLanguage", "XPath");
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result = context.selectNodes(locator)[0];
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value = result.value || result.text || null;
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}
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return value;
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}
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catch(e) {
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}
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},
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/////////////////////////////////////////////////////////////////////////////
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//
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// DataSourceBase public static methods
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//
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/////////////////////////////////////////////////////////////////////////////
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/**
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* Executes a configured callback. For object literal callbacks, the third
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* param determines whether to execute the success handler or failure handler.
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*
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* @method issueCallback
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* @param callback {Function|Object} the callback to execute
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* @param params {Array} params to be passed to the callback method
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* @param error {Boolean} whether an error occurred
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* @param scope {Object} the scope from which to execute the callback
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* (deprecated - use an object literal callback)
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* @static
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*/
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issueCallback : function (callback,params,error,scope) {
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if (lang.isFunction(callback)) {
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callback.apply(scope, params);
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} else if (lang.isObject(callback)) {
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scope = callback.scope || scope || window;
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var callbackFunc = callback.success;
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if (error) {
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callbackFunc = callback.failure;
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}
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if (callbackFunc) {
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callbackFunc.apply(scope, params.concat([callback.argument]));
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}
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}
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},
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/**
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* Converts data to type String.
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*
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* @method DataSourceBase.parseString
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* @param oData {String | Number | Boolean | Date | Array | Object} Data to parse.
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* The special values null and undefined will return null.
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* @return {String} A string, or null.
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* @static
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*/
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parseString : function(oData) {
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// Special case null and undefined
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if(!lang.isValue(oData)) {
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return null;
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}
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//Convert to string
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var string = oData + "";
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// Validate
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if(lang.isString(string)) {
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return string;
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}
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else {
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return null;
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}
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},
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/**
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* Converts data to type Number.
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*
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* @method DataSourceBase.parseNumber
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* @param oData {String | Number | Boolean} Data to convert. Note, the following
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* values return as null: null, undefined, NaN, "".
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* @return {Number} A number, or null.
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* @static
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*/
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parseNumber : function(oData) {
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if(!lang.isValue(oData) || (oData === "")) {
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return null;
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}
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//Convert to number
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var number = oData * 1;
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// Validate
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if(lang.isNumber(number)) {
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return number;
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}
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else {
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return null;
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}
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},
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// Backward compatibility
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convertNumber : function(oData) {
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return DS.parseNumber(oData);
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},
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/**
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* Converts data to type Date.
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*
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* @method DataSourceBase.parseDate
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* @param oData {Date | String | Number} Data to convert.
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* @return {Date} A Date instance.
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* @static
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*/
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parseDate : function(oData) {
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var date = null;
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//Convert to date
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if(!(oData instanceof Date)) {
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date = new Date(oData);
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}
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else {
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return oData;
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}
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// Validate
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if(date instanceof Date) {
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return date;
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}
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else {
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return null;
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}
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},
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// Backward compatibility
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convertDate : function(oData) {
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return DS.parseDate(oData);
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}
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});
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// Done in separate step so referenced functions are defined.
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/**
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* Data parsing functions.
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* @property DataSource.Parser
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* @type Object
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* @static
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*/
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DS.Parser = {
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string : DS.parseString,
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number : DS.parseNumber,
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date : DS.parseDate
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};
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// Prototype properties and methods
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|
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DS.prototype = {
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/////////////////////////////////////////////////////////////////////////////
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//
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|
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// DataSourceBase private properties
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//
|
|
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/////////////////////////////////////////////////////////////////////////////
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/**
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* Name of DataSource instance.
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*
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* @property _sName
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* @type String
|
|
|
* @private
|
|
|
*/
|
|
|
_sName : null,
|
|
|
|
|
|
/**
|
|
|
* Local cache of data result object literals indexed chronologically.
|
|
|
*
|
|
|
* @property _aCache
|
|
|
* @type Object[]
|
|
|
* @private
|
|
|
*/
|
|
|
_aCache : null,
|
|
|
|
|
|
/**
|
|
|
* Local queue of request connections, enabled if queue needs to be managed.
|
|
|
*
|
|
|
* @property _oQueue
|
|
|
* @type Object
|
|
|
* @private
|
|
|
*/
|
|
|
_oQueue : null,
|
|
|
|
|
|
/**
|
|
|
* Array of polling interval IDs that have been enabled, needed to clear all intervals.
|
|
|
*
|
|
|
* @property _aIntervals
|
|
|
* @type Array
|
|
|
* @private
|
|
|
*/
|
|
|
_aIntervals : null,
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// DataSourceBase public properties
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Max size of the local cache. Set to 0 to turn off caching. Caching is
|
|
|
* useful to reduce the number of server connections. Recommended only for data
|
|
|
* sources that return comprehensive results for queries or when stale data is
|
|
|
* not an issue.
|
|
|
*
|
|
|
* @property maxCacheEntries
|
|
|
* @type Number
|
|
|
* @default 0
|
|
|
*/
|
|
|
maxCacheEntries : 0,
|
|
|
|
|
|
/**
|
|
|
* Pointer to live database.
|
|
|
*
|
|
|
* @property liveData
|
|
|
* @type Object
|
|
|
*/
|
|
|
liveData : null,
|
|
|
|
|
|
/**
|
|
|
* Where the live data is held:
|
|
|
*
|
|
|
* <dl>
|
|
|
* <dt>TYPE_UNKNOWN</dt>
|
|
|
* <dt>TYPE_LOCAL</dt>
|
|
|
* <dt>TYPE_XHR</dt>
|
|
|
* <dt>TYPE_SCRIPTNODE</dt>
|
|
|
* <dt>TYPE_JSFUNCTION</dt>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @property dataType
|
|
|
* @type Number
|
|
|
* @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN
|
|
|
*
|
|
|
*/
|
|
|
dataType : DS.TYPE_UNKNOWN,
|
|
|
|
|
|
/**
|
|
|
* Format of response:
|
|
|
*
|
|
|
* <dl>
|
|
|
* <dt>TYPE_UNKNOWN</dt>
|
|
|
* <dt>TYPE_JSARRAY</dt>
|
|
|
* <dt>TYPE_JSON</dt>
|
|
|
* <dt>TYPE_XML</dt>
|
|
|
* <dt>TYPE_TEXT</dt>
|
|
|
* <dt>TYPE_HTMLTABLE</dt>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @property responseType
|
|
|
* @type Number
|
|
|
* @default YAHOO.util.DataSourceBase.TYPE_UNKNOWN
|
|
|
*/
|
|
|
responseType : DS.TYPE_UNKNOWN,
|
|
|
|
|
|
/**
|
|
|
* Response schema object literal takes a combination of the following properties:
|
|
|
*
|
|
|
* <dl>
|
|
|
* <dt>resultsList</dt> <dd>Pointer to array of tabular data</dd>
|
|
|
* <dt>resultNode</dt> <dd>Pointer to node name of row data (XML data only)</dd>
|
|
|
* <dt>recordDelim</dt> <dd>Record delimiter (text data only)</dd>
|
|
|
* <dt>fieldDelim</dt> <dd>Field delimiter (text data only)</dd>
|
|
|
* <dt>fields</dt> <dd>Array of field names (aka keys), or array of object literals
|
|
|
* such as: {key:"fieldname",parser:YAHOO.util.DataSourceBase.parseDate}</dd>
|
|
|
* <dt>metaFields</dt> <dd>Object literal of keys to include in the oParsedResponse.meta collection</dd>
|
|
|
* <dt>metaNode</dt> <dd>Name of the node under which to search for meta information in XML response data</dd>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @property responseSchema
|
|
|
* @type Object
|
|
|
*/
|
|
|
responseSchema : null,
|
|
|
|
|
|
/**
|
|
|
* Additional arguments passed to the JSON parse routine. The JSON string
|
|
|
* is the assumed first argument (where applicable). This property is not
|
|
|
* set by default, but the parse methods will use it if present.
|
|
|
*
|
|
|
* @property parseJSONArgs
|
|
|
* @type {MIXED|Array} If an Array, contents are used as individual arguments.
|
|
|
* Otherwise, value is used as an additional argument.
|
|
|
*/
|
|
|
// property intentionally undefined
|
|
|
|
|
|
/**
|
|
|
* When working with XML data, setting this property to true enables support for
|
|
|
* XPath-syntaxed locators in schema definitions.
|
|
|
*
|
|
|
* @property useXPath
|
|
|
* @type Boolean
|
|
|
* @default false
|
|
|
*/
|
|
|
useXPath : false,
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// DataSourceBase public methods
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Public accessor to the unique name of the DataSource instance.
|
|
|
*
|
|
|
* @method toString
|
|
|
* @return {String} Unique name of the DataSource instance.
|
|
|
*/
|
|
|
toString : function() {
|
|
|
return this._sName;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method passes request to cache and returns cached response if any,
|
|
|
* refreshing the hit in the cache as the newest item. Returns null if there is
|
|
|
* no cache hit.
|
|
|
*
|
|
|
* @method getCachedResponse
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} Callback object.
|
|
|
* @param oCaller {Object} (deprecated) Use callback object.
|
|
|
* @return {Object} Cached response object or null.
|
|
|
*/
|
|
|
getCachedResponse : function(oRequest, oCallback, oCaller) {
|
|
|
var aCache = this._aCache;
|
|
|
|
|
|
// If cache is enabled...
|
|
|
if(this.maxCacheEntries > 0) {
|
|
|
// Initialize local cache
|
|
|
if(!aCache) {
|
|
|
this._aCache = [];
|
|
|
}
|
|
|
// Look in local cache
|
|
|
else {
|
|
|
var nCacheLength = aCache.length;
|
|
|
if(nCacheLength > 0) {
|
|
|
var oResponse = null;
|
|
|
this.fireEvent("cacheRequestEvent", {request:oRequest,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
// Loop through each cached element
|
|
|
for(var i = nCacheLength-1; i >= 0; i--) {
|
|
|
var oCacheElem = aCache[i];
|
|
|
|
|
|
// Defer cache hit logic to a public overridable method
|
|
|
if(this.isCacheHit(oRequest,oCacheElem.request)) {
|
|
|
// The cache returned a hit!
|
|
|
// Grab the cached response
|
|
|
oResponse = oCacheElem.response;
|
|
|
this.fireEvent("cacheResponseEvent", {request:oRequest,response:oResponse,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
// Refresh the position of the cache hit
|
|
|
if(i < nCacheLength-1) {
|
|
|
// Remove element from its original location
|
|
|
aCache.splice(i,1);
|
|
|
// Add as newest
|
|
|
this.addToCache(oRequest, oResponse);
|
|
|
}
|
|
|
|
|
|
// Add a cache flag
|
|
|
oResponse.cached = true;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
return oResponse;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else if(aCache) {
|
|
|
this._aCache = null;
|
|
|
}
|
|
|
return null;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Default overridable method matches given request to given cached request.
|
|
|
* Returns true if is a hit, returns false otherwise. Implementers should
|
|
|
* override this method to customize the cache-matching algorithm.
|
|
|
*
|
|
|
* @method isCacheHit
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCachedRequest {Object} Cached request object.
|
|
|
* @return {Boolean} True if given request matches cached request, false otherwise.
|
|
|
*/
|
|
|
isCacheHit : function(oRequest, oCachedRequest) {
|
|
|
return (oRequest === oCachedRequest);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Adds a new item to the cache. If cache is full, evicts the stalest item
|
|
|
* before adding the new item.
|
|
|
*
|
|
|
* @method addToCache
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oResponse {Object} Response object to cache.
|
|
|
*/
|
|
|
addToCache : function(oRequest, oResponse) {
|
|
|
var aCache = this._aCache;
|
|
|
if(!aCache) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
// If the cache is full, make room by removing stalest element (index=0)
|
|
|
while(aCache.length >= this.maxCacheEntries) {
|
|
|
aCache.shift();
|
|
|
}
|
|
|
|
|
|
// Add to cache in the newest position, at the end of the array
|
|
|
var oCacheElem = {request:oRequest,response:oResponse};
|
|
|
aCache[aCache.length] = oCacheElem;
|
|
|
this.fireEvent("responseCacheEvent", {request:oRequest,response:oResponse});
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Flushes cache.
|
|
|
*
|
|
|
* @method flushCache
|
|
|
*/
|
|
|
flushCache : function() {
|
|
|
if(this._aCache) {
|
|
|
this._aCache = [];
|
|
|
this.fireEvent("cacheFlushEvent");
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Sets up a polling mechanism to send requests at set intervals and forward
|
|
|
* responses to given callback.
|
|
|
*
|
|
|
* @method setInterval
|
|
|
* @param nMsec {Number} Length of interval in milliseconds.
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Function} Handler function to receive the response.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Interval ID.
|
|
|
*/
|
|
|
setInterval : function(nMsec, oRequest, oCallback, oCaller) {
|
|
|
if(lang.isNumber(nMsec) && (nMsec >= 0)) {
|
|
|
var oSelf = this;
|
|
|
var nId = setInterval(function() {
|
|
|
oSelf.makeConnection(oRequest, oCallback, oCaller);
|
|
|
}, nMsec);
|
|
|
this._aIntervals.push(nId);
|
|
|
return nId;
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Disables polling mechanism associated with the given interval ID.
|
|
|
*
|
|
|
* @method clearInterval
|
|
|
* @param nId {Number} Interval ID.
|
|
|
*/
|
|
|
clearInterval : function(nId) {
|
|
|
// Remove from tracker if there
|
|
|
var tracker = this._aIntervals || [];
|
|
|
for(var i=tracker.length-1; i>-1; i--) {
|
|
|
if(tracker[i] === nId) {
|
|
|
tracker.splice(i,1);
|
|
|
clearInterval(nId);
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Disables all known polling intervals.
|
|
|
*
|
|
|
* @method clearAllIntervals
|
|
|
*/
|
|
|
clearAllIntervals : function() {
|
|
|
var tracker = this._aIntervals || [];
|
|
|
for(var i=tracker.length-1; i>-1; i--) {
|
|
|
clearInterval(tracker[i]);
|
|
|
}
|
|
|
tracker = [];
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* First looks for cached response, then sends request to live data. The
|
|
|
* following arguments are passed to the callback function:
|
|
|
* <dl>
|
|
|
* <dt><code>oRequest</code></dt>
|
|
|
* <dd>The same value that was passed in as the first argument to sendRequest.</dd>
|
|
|
* <dt><code>oParsedResponse</code></dt>
|
|
|
* <dd>An object literal containing the following properties:
|
|
|
* <dl>
|
|
|
* <dt><code>tId</code></dt>
|
|
|
* <dd>Unique transaction ID number.</dd>
|
|
|
* <dt><code>results</code></dt>
|
|
|
* <dd>Schema-parsed data results.</dd>
|
|
|
* <dt><code>error</code></dt>
|
|
|
* <dd>True in cases of data error.</dd>
|
|
|
* <dt><code>cached</code></dt>
|
|
|
* <dd>True when response is returned from DataSource cache.</dd>
|
|
|
* <dt><code>meta</code></dt>
|
|
|
* <dd>Schema-parsed meta data.</dd>
|
|
|
* </dl>
|
|
|
* <dt><code>oPayload</code></dt>
|
|
|
* <dd>The same value as was passed in as <code>argument</code> in the oCallback object literal.</dd>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @method sendRequest
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} An object literal with the following properties:
|
|
|
* <dl>
|
|
|
* <dt><code>success</code></dt>
|
|
|
* <dd>The function to call when the data is ready.</dd>
|
|
|
* <dt><code>failure</code></dt>
|
|
|
* <dd>The function to call upon a response failure condition.</dd>
|
|
|
* <dt><code>scope</code></dt>
|
|
|
* <dd>The object to serve as the scope for the success and failure handlers.</dd>
|
|
|
* <dt><code>argument</code></dt>
|
|
|
* <dd>Arbitrary data that will be passed back to the success and failure handlers.</dd>
|
|
|
* </dl>
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Transaction ID, or null if response found in cache.
|
|
|
*/
|
|
|
sendRequest : function(oRequest, oCallback, oCaller) {
|
|
|
// First look in cache
|
|
|
var oCachedResponse = this.getCachedResponse(oRequest, oCallback, oCaller);
|
|
|
if(oCachedResponse) {
|
|
|
DS.issueCallback(oCallback,[oRequest,oCachedResponse],false,oCaller);
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
|
|
|
// Not in cache, so forward request to live data
|
|
|
return this.makeConnection(oRequest, oCallback, oCaller);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable default method generates a unique transaction ID and passes
|
|
|
* the live data reference directly to the handleResponse function. This
|
|
|
* method should be implemented by subclasses to achieve more complex behavior
|
|
|
* or to access remote data.
|
|
|
*
|
|
|
* @method makeConnection
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} Callback object literal.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Transaction ID.
|
|
|
*/
|
|
|
makeConnection : function(oRequest, oCallback, oCaller) {
|
|
|
var tId = DS._nTransactionId++;
|
|
|
this.fireEvent("requestEvent", {tId:tId, request:oRequest,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
/* accounts for the following cases:
|
|
|
YAHOO.util.DataSourceBase.TYPE_UNKNOWN
|
|
|
YAHOO.util.DataSourceBase.TYPE_JSARRAY
|
|
|
YAHOO.util.DataSourceBase.TYPE_JSON
|
|
|
YAHOO.util.DataSourceBase.TYPE_HTMLTABLE
|
|
|
YAHOO.util.DataSourceBase.TYPE_XML
|
|
|
YAHOO.util.DataSourceBase.TYPE_TEXT
|
|
|
*/
|
|
|
var oRawResponse = this.liveData;
|
|
|
|
|
|
this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
|
|
|
return tId;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Receives raw data response and type converts to XML, JSON, etc as necessary.
|
|
|
* Forwards oFullResponse to appropriate parsing function to get turned into
|
|
|
* oParsedResponse. Calls doBeforeCallback() and adds oParsedResponse to
|
|
|
* the cache when appropriate before calling issueCallback().
|
|
|
*
|
|
|
* The oParsedResponse object literal has the following properties:
|
|
|
* <dl>
|
|
|
* <dd><dt>tId {Number}</dt> Unique transaction ID</dd>
|
|
|
* <dd><dt>results {Array}</dt> Array of parsed data results</dd>
|
|
|
* <dd><dt>meta {Object}</dt> Object literal of meta values</dd>
|
|
|
* <dd><dt>error {Boolean}</dt> (optional) True if there was an error</dd>
|
|
|
* <dd><dt>cached {Boolean}</dt> (optional) True if response was cached</dd>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @method handleResponse
|
|
|
* @param oRequest {Object} Request object
|
|
|
* @param oRawResponse {Object} The raw response from the live database.
|
|
|
* @param oCallback {Object} Callback object literal.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @param tId {Number} Transaction ID.
|
|
|
*/
|
|
|
handleResponse : function(oRequest, oRawResponse, oCallback, oCaller, tId) {
|
|
|
this.fireEvent("responseEvent", {tId:tId, request:oRequest, response:oRawResponse,
|
|
|
callback:oCallback, caller:oCaller});
|
|
|
var xhr = (this.dataType == DS.TYPE_XHR) ? true : false;
|
|
|
var oParsedResponse = null;
|
|
|
var oFullResponse = oRawResponse;
|
|
|
|
|
|
// Try to sniff data type if it has not been defined
|
|
|
if(this.responseType === DS.TYPE_UNKNOWN) {
|
|
|
var ctype = (oRawResponse && oRawResponse.getResponseHeader) ? oRawResponse.getResponseHeader["Content-Type"] : null;
|
|
|
if(ctype) {
|
|
|
// xml
|
|
|
if(ctype.indexOf("text/xml") > -1) {
|
|
|
this.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(ctype.indexOf("application/json") > -1) { // json
|
|
|
this.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
else if(ctype.indexOf("text/plain") > -1) { // text
|
|
|
this.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
if(YAHOO.lang.isArray(oRawResponse)) { // array
|
|
|
this.responseType = DS.TYPE_JSARRAY;
|
|
|
}
|
|
|
// xml
|
|
|
else if(oRawResponse && oRawResponse.nodeType && (oRawResponse.nodeType === 9 || oRawResponse.nodeType === 1 || oRawResponse.nodeType === 11)) {
|
|
|
this.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
|
|
|
this.responseType = DS.TYPE_HTMLTABLE;
|
|
|
}
|
|
|
else if(YAHOO.lang.isObject(oRawResponse)) { // json
|
|
|
this.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
else if(YAHOO.lang.isString(oRawResponse)) { // text
|
|
|
this.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
switch(this.responseType) {
|
|
|
case DS.TYPE_JSARRAY:
|
|
|
if(xhr && oRawResponse && oRawResponse.responseText) {
|
|
|
oFullResponse = oRawResponse.responseText;
|
|
|
}
|
|
|
try {
|
|
|
// Convert to JS array if it's a string
|
|
|
if(lang.isString(oFullResponse)) {
|
|
|
var parseArgs = [oFullResponse].concat(this.parseJSONArgs);
|
|
|
// Check for YUI JSON Util
|
|
|
if(lang.JSON) {
|
|
|
oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs);
|
|
|
}
|
|
|
// Look for JSON parsers using an API similar to json2.js
|
|
|
else if(window.JSON && JSON.parse) {
|
|
|
oFullResponse = JSON.parse.apply(JSON,parseArgs);
|
|
|
}
|
|
|
// Look for JSON parsers using an API similar to json.js
|
|
|
else if(oFullResponse.parseJSON) {
|
|
|
oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1));
|
|
|
}
|
|
|
// No JSON lib found so parse the string
|
|
|
else {
|
|
|
// Trim leading spaces
|
|
|
while (oFullResponse.length > 0 &&
|
|
|
(oFullResponse.charAt(0) != "{") &&
|
|
|
(oFullResponse.charAt(0) != "[")) {
|
|
|
oFullResponse = oFullResponse.substring(1, oFullResponse.length);
|
|
|
}
|
|
|
|
|
|
if(oFullResponse.length > 0) {
|
|
|
// Strip extraneous stuff at the end
|
|
|
var arrayEnd =
|
|
|
Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}"));
|
|
|
oFullResponse = oFullResponse.substring(0,arrayEnd+1);
|
|
|
|
|
|
// Turn the string into an object literal...
|
|
|
// ...eval is necessary here
|
|
|
oFullResponse = eval("(" + oFullResponse + ")");
|
|
|
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
catch(e1) {
|
|
|
}
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseArrayData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
case DS.TYPE_JSON:
|
|
|
if(xhr && oRawResponse && oRawResponse.responseText) {
|
|
|
oFullResponse = oRawResponse.responseText;
|
|
|
}
|
|
|
try {
|
|
|
// Convert to JSON object if it's a string
|
|
|
if(lang.isString(oFullResponse)) {
|
|
|
var parseArgs = [oFullResponse].concat(this.parseJSONArgs);
|
|
|
// Check for YUI JSON Util
|
|
|
if(lang.JSON) {
|
|
|
oFullResponse = lang.JSON.parse.apply(lang.JSON,parseArgs);
|
|
|
}
|
|
|
// Look for JSON parsers using an API similar to json2.js
|
|
|
else if(window.JSON && JSON.parse) {
|
|
|
oFullResponse = JSON.parse.apply(JSON,parseArgs);
|
|
|
}
|
|
|
// Look for JSON parsers using an API similar to json.js
|
|
|
else if(oFullResponse.parseJSON) {
|
|
|
oFullResponse = oFullResponse.parseJSON.apply(oFullResponse,parseArgs.slice(1));
|
|
|
}
|
|
|
// No JSON lib found so parse the string
|
|
|
else {
|
|
|
// Trim leading spaces
|
|
|
while (oFullResponse.length > 0 &&
|
|
|
(oFullResponse.charAt(0) != "{") &&
|
|
|
(oFullResponse.charAt(0) != "[")) {
|
|
|
oFullResponse = oFullResponse.substring(1, oFullResponse.length);
|
|
|
}
|
|
|
|
|
|
if(oFullResponse.length > 0) {
|
|
|
// Strip extraneous stuff at the end
|
|
|
var objEnd = Math.max(oFullResponse.lastIndexOf("]"),oFullResponse.lastIndexOf("}"));
|
|
|
oFullResponse = oFullResponse.substring(0,objEnd+1);
|
|
|
|
|
|
// Turn the string into an object literal...
|
|
|
// ...eval is necessary here
|
|
|
oFullResponse = eval("(" + oFullResponse + ")");
|
|
|
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
catch(e) {
|
|
|
}
|
|
|
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseJSONData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
case DS.TYPE_HTMLTABLE:
|
|
|
if(xhr && oRawResponse.responseText) {
|
|
|
var el = document.createElement('div');
|
|
|
el.innerHTML = oRawResponse.responseText;
|
|
|
oFullResponse = el.getElementsByTagName('table')[0];
|
|
|
}
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseHTMLTableData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
case DS.TYPE_XML:
|
|
|
if(xhr && oRawResponse.responseXML) {
|
|
|
oFullResponse = oRawResponse.responseXML;
|
|
|
}
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseXMLData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
case DS.TYPE_TEXT:
|
|
|
if(xhr && lang.isString(oRawResponse.responseText)) {
|
|
|
oFullResponse = oRawResponse.responseText;
|
|
|
}
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseTextData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
default:
|
|
|
oFullResponse = this.doBeforeParseData(oRequest, oFullResponse, oCallback);
|
|
|
oParsedResponse = this.parseData(oRequest, oFullResponse);
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
|
|
|
// Clean up for consistent signature
|
|
|
oParsedResponse = oParsedResponse || {};
|
|
|
if(!oParsedResponse.results) {
|
|
|
oParsedResponse.results = [];
|
|
|
}
|
|
|
if(!oParsedResponse.meta) {
|
|
|
oParsedResponse.meta = {};
|
|
|
}
|
|
|
|
|
|
// Success
|
|
|
if(!oParsedResponse.error) {
|
|
|
// Last chance to touch the raw response or the parsed response
|
|
|
oParsedResponse = this.doBeforeCallback(oRequest, oFullResponse, oParsedResponse, oCallback);
|
|
|
this.fireEvent("responseParseEvent", {request:oRequest,
|
|
|
response:oParsedResponse, callback:oCallback, caller:oCaller});
|
|
|
// Cache the response
|
|
|
this.addToCache(oRequest, oParsedResponse);
|
|
|
}
|
|
|
// Error
|
|
|
else {
|
|
|
// Be sure the error flag is on
|
|
|
oParsedResponse.error = true;
|
|
|
this.fireEvent("dataErrorEvent", {request:oRequest, response: oRawResponse, callback:oCallback,
|
|
|
caller:oCaller, message:DS.ERROR_DATANULL});
|
|
|
}
|
|
|
|
|
|
// Send the response back to the caller
|
|
|
oParsedResponse.tId = tId;
|
|
|
DS.issueCallback(oCallback,[oRequest,oParsedResponse],oParsedResponse.error,oCaller);
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method gives implementers access to the original full response
|
|
|
* before the data gets parsed. Implementers should take care not to return an
|
|
|
* unparsable or otherwise invalid response.
|
|
|
*
|
|
|
* @method doBeforeParseData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full response from the live database.
|
|
|
* @param oCallback {Object} The callback object.
|
|
|
* @return {Object} Full response for parsing.
|
|
|
|
|
|
*/
|
|
|
doBeforeParseData : function(oRequest, oFullResponse, oCallback) {
|
|
|
return oFullResponse;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method gives implementers access to the original full response and
|
|
|
* the parsed response (parsed against the given schema) before the data
|
|
|
* is added to the cache (if applicable) and then sent back to callback function.
|
|
|
* This is your chance to access the raw response and/or populate the parsed
|
|
|
* response with any custom data.
|
|
|
*
|
|
|
* @method doBeforeCallback
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full response from the live database.
|
|
|
* @param oParsedResponse {Object} The parsed response to return to calling object.
|
|
|
* @param oCallback {Object} The callback object.
|
|
|
* @return {Object} Parsed response object.
|
|
|
*/
|
|
|
doBeforeCallback : function(oRequest, oFullResponse, oParsedResponse, oCallback) {
|
|
|
return oParsedResponse;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses data of generic RESPONSE_TYPE into a response object.
|
|
|
*
|
|
|
* @method parseData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full Array from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties:<br>
|
|
|
* - results {Array} Array of parsed data results<br>
|
|
|
* - meta {Object} Object literal of meta values<br>
|
|
|
* - error {Boolean} (optional) True if there was an error<br>
|
|
|
*/
|
|
|
parseData : function(oRequest, oFullResponse) {
|
|
|
if(lang.isValue(oFullResponse)) {
|
|
|
var oParsedResponse = {results:oFullResponse,meta:{}};
|
|
|
return oParsedResponse;
|
|
|
|
|
|
}
|
|
|
return null;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses Array data into a response object.
|
|
|
*
|
|
|
* @method parseArrayData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full Array from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties:<br>
|
|
|
* - results (Array) Array of parsed data results<br>
|
|
|
* - error (Boolean) True if there was an error
|
|
|
*/
|
|
|
parseArrayData : function(oRequest, oFullResponse) {
|
|
|
if(lang.isArray(oFullResponse)) {
|
|
|
var results = [],
|
|
|
i, j,
|
|
|
rec, field, data;
|
|
|
|
|
|
// Parse for fields
|
|
|
if(lang.isArray(this.responseSchema.fields)) {
|
|
|
var fields = this.responseSchema.fields;
|
|
|
for (i = fields.length - 1; i >= 0; --i) {
|
|
|
if (typeof fields[i] !== 'object') {
|
|
|
fields[i] = { key : fields[i] };
|
|
|
}
|
|
|
}
|
|
|
|
|
|
var parsers = {}, p;
|
|
|
for (i = fields.length - 1; i >= 0; --i) {
|
|
|
p = (typeof fields[i].parser === 'function' ?
|
|
|
fields[i].parser :
|
|
|
DS.Parser[fields[i].parser+'']) || fields[i].converter;
|
|
|
if (p) {
|
|
|
parsers[fields[i].key] = p;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
var arrType = lang.isArray(oFullResponse[0]);
|
|
|
for(i=oFullResponse.length-1; i>-1; i--) {
|
|
|
var oResult = {};
|
|
|
rec = oFullResponse[i];
|
|
|
if (typeof rec === 'object') {
|
|
|
for(j=fields.length-1; j>-1; j--) {
|
|
|
field = fields[j];
|
|
|
data = arrType ? rec[j] : rec[field.key];
|
|
|
|
|
|
if (parsers[field.key]) {
|
|
|
data = parsers[field.key].call(this,data);
|
|
|
}
|
|
|
|
|
|
// Safety measure
|
|
|
if(data === undefined) {
|
|
|
data = null;
|
|
|
}
|
|
|
|
|
|
oResult[field.key] = data;
|
|
|
}
|
|
|
}
|
|
|
else if (lang.isString(rec)) {
|
|
|
for(j=fields.length-1; j>-1; j--) {
|
|
|
field = fields[j];
|
|
|
data = rec;
|
|
|
|
|
|
if (parsers[field.key]) {
|
|
|
data = parsers[field.key].call(this,data);
|
|
|
}
|
|
|
|
|
|
// Safety measure
|
|
|
if(data === undefined) {
|
|
|
data = null;
|
|
|
}
|
|
|
|
|
|
oResult[field.key] = data;
|
|
|
}
|
|
|
}
|
|
|
results[i] = oResult;
|
|
|
}
|
|
|
}
|
|
|
// Return entire data set
|
|
|
else {
|
|
|
results = oFullResponse;
|
|
|
}
|
|
|
var oParsedResponse = {results:results};
|
|
|
return oParsedResponse;
|
|
|
|
|
|
}
|
|
|
return null;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses plain text data into a response object.
|
|
|
*
|
|
|
* @method parseTextData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full text response from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties:<br>
|
|
|
* - results (Array) Array of parsed data results<br>
|
|
|
* - error (Boolean) True if there was an error
|
|
|
*/
|
|
|
parseTextData : function(oRequest, oFullResponse) {
|
|
|
if(lang.isString(oFullResponse)) {
|
|
|
if(lang.isString(this.responseSchema.recordDelim) &&
|
|
|
lang.isString(this.responseSchema.fieldDelim)) {
|
|
|
var oParsedResponse = {results:[]};
|
|
|
var recDelim = this.responseSchema.recordDelim;
|
|
|
var fieldDelim = this.responseSchema.fieldDelim;
|
|
|
if(oFullResponse.length > 0) {
|
|
|
// Delete the last line delimiter at the end of the data if it exists
|
|
|
var newLength = oFullResponse.length-recDelim.length;
|
|
|
if(oFullResponse.substr(newLength) == recDelim) {
|
|
|
oFullResponse = oFullResponse.substr(0, newLength);
|
|
|
}
|
|
|
if(oFullResponse.length > 0) {
|
|
|
// Split along record delimiter to get an array of strings
|
|
|
var recordsarray = oFullResponse.split(recDelim);
|
|
|
// Cycle through each record
|
|
|
for(var i = 0, len = recordsarray.length, recIdx = 0; i < len; ++i) {
|
|
|
var bError = false,
|
|
|
sRecord = recordsarray[i];
|
|
|
if (lang.isString(sRecord) && (sRecord.length > 0)) {
|
|
|
// Split each record along field delimiter to get data
|
|
|
var fielddataarray = recordsarray[i].split(fieldDelim);
|
|
|
var oResult = {};
|
|
|
|
|
|
// Filter for fields data
|
|
|
if(lang.isArray(this.responseSchema.fields)) {
|
|
|
var fields = this.responseSchema.fields;
|
|
|
for(var j=fields.length-1; j>-1; j--) {
|
|
|
try {
|
|
|
// Remove quotation marks from edges, if applicable
|
|
|
var data = fielddataarray[j];
|
|
|
if (lang.isString(data)) {
|
|
|
if(data.charAt(0) == "\"") {
|
|
|
data = data.substr(1);
|
|
|
}
|
|
|
if(data.charAt(data.length-1) == "\"") {
|
|
|
data = data.substr(0,data.length-1);
|
|
|
}
|
|
|
var field = fields[j];
|
|
|
var key = (lang.isValue(field.key)) ? field.key : field;
|
|
|
// Backward compatibility
|
|
|
if(!field.parser && field.converter) {
|
|
|
field.parser = field.converter;
|
|
|
}
|
|
|
var parser = (typeof field.parser === 'function') ?
|
|
|
field.parser :
|
|
|
DS.Parser[field.parser+''];
|
|
|
if(parser) {
|
|
|
data = parser.call(this, data);
|
|
|
}
|
|
|
// Safety measure
|
|
|
if(data === undefined) {
|
|
|
data = null;
|
|
|
}
|
|
|
oResult[key] = data;
|
|
|
}
|
|
|
else {
|
|
|
bError = true;
|
|
|
}
|
|
|
}
|
|
|
catch(e) {
|
|
|
bError = true;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
// No fields defined so pass along all data as an array
|
|
|
else {
|
|
|
oResult = fielddataarray;
|
|
|
}
|
|
|
if(!bError) {
|
|
|
oParsedResponse.results[recIdx++] = oResult;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
return oParsedResponse;
|
|
|
}
|
|
|
}
|
|
|
return null;
|
|
|
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses XML data for one result into an object literal.
|
|
|
*
|
|
|
* @method parseXMLResult
|
|
|
* @param result {XML} XML for one result.
|
|
|
* @return {Object} Object literal of data for one result.
|
|
|
*/
|
|
|
parseXMLResult : function(result) {
|
|
|
var oResult = {},
|
|
|
schema = this.responseSchema;
|
|
|
|
|
|
try {
|
|
|
// Loop through each data field in each result using the schema
|
|
|
for(var m = schema.fields.length-1; m >= 0 ; m--) {
|
|
|
var field = schema.fields[m];
|
|
|
var key = (lang.isValue(field.key)) ? field.key : field;
|
|
|
var data = null;
|
|
|
|
|
|
if(this.useXPath) {
|
|
|
data = YAHOO.util.DataSource._getLocationValue(field, result);
|
|
|
}
|
|
|
else {
|
|
|
// Values may be held in an attribute...
|
|
|
var xmlAttr = result.attributes.getNamedItem(key);
|
|
|
if(xmlAttr) {
|
|
|
data = xmlAttr.value;
|
|
|
}
|
|
|
// ...or in a node
|
|
|
else {
|
|
|
var xmlNode = result.getElementsByTagName(key);
|
|
|
if(xmlNode && xmlNode.item(0)) {
|
|
|
var item = xmlNode.item(0);
|
|
|
// For IE, then DOM...
|
|
|
data = (item) ? ((item.text) ? item.text : (item.textContent) ? item.textContent : null) : null;
|
|
|
// ...then fallback, but check for multiple child nodes
|
|
|
if(!data) {
|
|
|
var datapieces = [];
|
|
|
for(var j=0, len=item.childNodes.length; j<len; j++) {
|
|
|
if(item.childNodes[j].nodeValue) {
|
|
|
datapieces[datapieces.length] = item.childNodes[j].nodeValue;
|
|
|
}
|
|
|
}
|
|
|
if(datapieces.length > 0) {
|
|
|
data = datapieces.join("");
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
// Safety net
|
|
|
if(data === null) {
|
|
|
data = "";
|
|
|
}
|
|
|
// Backward compatibility
|
|
|
if(!field.parser && field.converter) {
|
|
|
field.parser = field.converter;
|
|
|
}
|
|
|
var parser = (typeof field.parser === 'function') ?
|
|
|
field.parser :
|
|
|
DS.Parser[field.parser+''];
|
|
|
if(parser) {
|
|
|
data = parser.call(this, data);
|
|
|
}
|
|
|
// Safety measure
|
|
|
if(data === undefined) {
|
|
|
data = null;
|
|
|
}
|
|
|
oResult[key] = data;
|
|
|
}
|
|
|
}
|
|
|
catch(e) {
|
|
|
}
|
|
|
|
|
|
return oResult;
|
|
|
},
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses XML data into a response object.
|
|
|
*
|
|
|
* @method parseXMLData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full XML response from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties<br>
|
|
|
* - results (Array) Array of parsed data results<br>
|
|
|
* - error (Boolean) True if there was an error
|
|
|
*/
|
|
|
parseXMLData : function(oRequest, oFullResponse) {
|
|
|
var bError = false,
|
|
|
schema = this.responseSchema,
|
|
|
oParsedResponse = {meta:{}},
|
|
|
xmlList = null,
|
|
|
metaNode = schema.metaNode,
|
|
|
metaLocators = schema.metaFields || {},
|
|
|
i,k,loc,v;
|
|
|
|
|
|
// In case oFullResponse is something funky
|
|
|
try {
|
|
|
// Pull any meta identified
|
|
|
if(this.useXPath) {
|
|
|
for (k in metaLocators) {
|
|
|
oParsedResponse.meta[k] = YAHOO.util.DataSource._getLocationValue(metaLocators[k], oFullResponse);
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
metaNode = metaNode ? oFullResponse.getElementsByTagName(metaNode)[0] :
|
|
|
oFullResponse;
|
|
|
|
|
|
if (metaNode) {
|
|
|
for (k in metaLocators) {
|
|
|
if (lang.hasOwnProperty(metaLocators, k)) {
|
|
|
loc = metaLocators[k];
|
|
|
// Look for a node
|
|
|
v = metaNode.getElementsByTagName(loc)[0];
|
|
|
|
|
|
if (v) {
|
|
|
v = v.firstChild.nodeValue;
|
|
|
} else {
|
|
|
// Look for an attribute
|
|
|
v = metaNode.attributes.getNamedItem(loc);
|
|
|
if (v) {
|
|
|
v = v.value;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (lang.isValue(v)) {
|
|
|
oParsedResponse.meta[k] = v;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// For result data
|
|
|
xmlList = (schema.resultNode) ?
|
|
|
oFullResponse.getElementsByTagName(schema.resultNode) :
|
|
|
null;
|
|
|
}
|
|
|
catch(e) {
|
|
|
}
|
|
|
if(!xmlList || !lang.isArray(schema.fields)) {
|
|
|
bError = true;
|
|
|
}
|
|
|
// Loop through each result
|
|
|
else {
|
|
|
oParsedResponse.results = [];
|
|
|
for(i = xmlList.length-1; i >= 0 ; --i) {
|
|
|
var oResult = this.parseXMLResult(xmlList.item(i));
|
|
|
// Capture each array of values into an array of results
|
|
|
oParsedResponse.results[i] = oResult;
|
|
|
}
|
|
|
}
|
|
|
if(bError) {
|
|
|
oParsedResponse.error = true;
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
return oParsedResponse;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses JSON data into a response object.
|
|
|
*
|
|
|
* @method parseJSONData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full JSON from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties<br>
|
|
|
* - results (Array) Array of parsed data results<br>
|
|
|
* - error (Boolean) True if there was an error
|
|
|
*/
|
|
|
parseJSONData : function(oRequest, oFullResponse) {
|
|
|
var oParsedResponse = {results:[],meta:{}};
|
|
|
|
|
|
if(lang.isObject(oFullResponse) && this.responseSchema.resultsList) {
|
|
|
var schema = this.responseSchema,
|
|
|
fields = schema.fields,
|
|
|
resultsList = oFullResponse,
|
|
|
results = [],
|
|
|
metaFields = schema.metaFields || {},
|
|
|
fieldParsers = [],
|
|
|
fieldPaths = [],
|
|
|
simpleFields = [],
|
|
|
bError = false,
|
|
|
i,len,j,v,key,parser,path;
|
|
|
|
|
|
// Function to convert the schema's fields into walk paths
|
|
|
var buildPath = function (needle) {
|
|
|
var path = null, keys = [], i = 0;
|
|
|
if (needle) {
|
|
|
// Strip the ["string keys"] and [1] array indexes
|
|
|
needle = needle.
|
|
|
replace(/\[(['"])(.*?)\1\]/g,
|
|
|
function (x,$1,$2) {keys[i]=$2;return '.@'+(i++);}).
|
|
|
replace(/\[(\d+)\]/g,
|
|
|
function (x,$1) {keys[i]=parseInt($1,10)|0;return '.@'+(i++);}).
|
|
|
replace(/^\./,''); // remove leading dot
|
|
|
|
|
|
// If the cleaned needle contains invalid characters, the
|
|
|
// path is invalid
|
|
|
if (!/[^\w\.\$@]/.test(needle)) {
|
|
|
path = needle.split('.');
|
|
|
for (i=path.length-1; i >= 0; --i) {
|
|
|
if (path[i].charAt(0) === '@') {
|
|
|
path[i] = keys[parseInt(path[i].substr(1),10)];
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
}
|
|
|
return path;
|
|
|
};
|
|
|
|
|
|
|
|
|
// Function to walk a path and return the pot of gold
|
|
|
var walkPath = function (path, origin) {
|
|
|
var v=origin,i=0,len=path.length;
|
|
|
for (;i<len && v;++i) {
|
|
|
v = v[path[i]];
|
|
|
}
|
|
|
return v;
|
|
|
};
|
|
|
|
|
|
// Parse the response
|
|
|
// Step 1. Pull the resultsList from oFullResponse (default assumes
|
|
|
// oFullResponse IS the resultsList)
|
|
|
path = buildPath(schema.resultsList);
|
|
|
if (path) {
|
|
|
resultsList = walkPath(path, oFullResponse);
|
|
|
if (resultsList === undefined) {
|
|
|
bError = true;
|
|
|
}
|
|
|
} else {
|
|
|
bError = true;
|
|
|
}
|
|
|
|
|
|
if (!resultsList) {
|
|
|
resultsList = [];
|
|
|
}
|
|
|
|
|
|
if (!lang.isArray(resultsList)) {
|
|
|
resultsList = [resultsList];
|
|
|
}
|
|
|
|
|
|
if (!bError) {
|
|
|
// Step 2. Parse out field data if identified
|
|
|
if(schema.fields) {
|
|
|
var field;
|
|
|
// Build the field parser map and location paths
|
|
|
for (i=0, len=fields.length; i<len; i++) {
|
|
|
field = fields[i];
|
|
|
key = field.key || field;
|
|
|
parser = ((typeof field.parser === 'function') ?
|
|
|
field.parser :
|
|
|
DS.Parser[field.parser+'']) || field.converter;
|
|
|
path = buildPath(key);
|
|
|
|
|
|
if (parser) {
|
|
|
fieldParsers[fieldParsers.length] = {key:key,parser:parser};
|
|
|
}
|
|
|
|
|
|
if (path) {
|
|
|
if (path.length > 1) {
|
|
|
fieldPaths[fieldPaths.length] = {key:key,path:path};
|
|
|
} else {
|
|
|
simpleFields[simpleFields.length] = {key:key,path:path[0]};
|
|
|
}
|
|
|
} else {
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Process the results, flattening the records and/or applying parsers if needed
|
|
|
for (i = resultsList.length - 1; i >= 0; --i) {
|
|
|
var r = resultsList[i], rec = {};
|
|
|
if(r) {
|
|
|
for (j = simpleFields.length - 1; j >= 0; --j) {
|
|
|
// Bug 1777850: data might be held in an array
|
|
|
rec[simpleFields[j].key] =
|
|
|
(r[simpleFields[j].path] !== undefined) ?
|
|
|
r[simpleFields[j].path] : r[j];
|
|
|
}
|
|
|
|
|
|
for (j = fieldPaths.length - 1; j >= 0; --j) {
|
|
|
rec[fieldPaths[j].key] = walkPath(fieldPaths[j].path,r);
|
|
|
}
|
|
|
|
|
|
for (j = fieldParsers.length - 1; j >= 0; --j) {
|
|
|
var p = fieldParsers[j].key;
|
|
|
rec[p] = fieldParsers[j].parser(rec[p]);
|
|
|
if (rec[p] === undefined) {
|
|
|
rec[p] = null;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
results[i] = rec;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
results = resultsList;
|
|
|
}
|
|
|
|
|
|
for (key in metaFields) {
|
|
|
if (lang.hasOwnProperty(metaFields,key)) {
|
|
|
path = buildPath(metaFields[key]);
|
|
|
if (path) {
|
|
|
v = walkPath(path, oFullResponse);
|
|
|
oParsedResponse.meta[key] = v;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
oParsedResponse.error = true;
|
|
|
}
|
|
|
|
|
|
oParsedResponse.results = results;
|
|
|
}
|
|
|
else {
|
|
|
oParsedResponse.error = true;
|
|
|
}
|
|
|
|
|
|
return oParsedResponse;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method parses an HTML TABLE element reference into a response object.
|
|
|
* Data is parsed out of TR elements from all TBODY elements.
|
|
|
*
|
|
|
* @method parseHTMLTableData
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oFullResponse {Object} The full HTML element reference from the live database.
|
|
|
* @return {Object} Parsed response object with the following properties<br>
|
|
|
* - results (Array) Array of parsed data results<br>
|
|
|
* - error (Boolean) True if there was an error
|
|
|
*/
|
|
|
parseHTMLTableData : function(oRequest, oFullResponse) {
|
|
|
var bError = false;
|
|
|
var elTable = oFullResponse;
|
|
|
var fields = this.responseSchema.fields;
|
|
|
var oParsedResponse = {results:[]};
|
|
|
|
|
|
if(lang.isArray(fields)) {
|
|
|
// Iterate through each TBODY
|
|
|
for(var i=0; i<elTable.tBodies.length; i++) {
|
|
|
var elTbody = elTable.tBodies[i];
|
|
|
|
|
|
// Iterate through each TR
|
|
|
for(var j=elTbody.rows.length-1; j>-1; j--) {
|
|
|
var elRow = elTbody.rows[j];
|
|
|
var oResult = {};
|
|
|
|
|
|
for(var k=fields.length-1; k>-1; k--) {
|
|
|
var field = fields[k];
|
|
|
var key = (lang.isValue(field.key)) ? field.key : field;
|
|
|
var data = elRow.cells[k].innerHTML;
|
|
|
|
|
|
// Backward compatibility
|
|
|
if(!field.parser && field.converter) {
|
|
|
field.parser = field.converter;
|
|
|
}
|
|
|
var parser = (typeof field.parser === 'function') ?
|
|
|
field.parser :
|
|
|
DS.Parser[field.parser+''];
|
|
|
if(parser) {
|
|
|
data = parser.call(this, data);
|
|
|
}
|
|
|
// Safety measure
|
|
|
if(data === undefined) {
|
|
|
data = null;
|
|
|
}
|
|
|
oResult[key] = data;
|
|
|
}
|
|
|
oParsedResponse.results[j] = oResult;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
bError = true;
|
|
|
}
|
|
|
|
|
|
if(bError) {
|
|
|
oParsedResponse.error = true;
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
return oParsedResponse;
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
|
|
// DataSourceBase uses EventProvider
|
|
|
lang.augmentProto(DS, util.EventProvider);
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* LocalDataSource class for in-memory data structs including JavaScript arrays,
|
|
|
* JavaScript object literals (JSON), XML documents, and HTML tables.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @class YAHOO.util.LocalDataSource
|
|
|
* @extends YAHOO.util.DataSourceBase
|
|
|
* @constructor
|
|
|
* @param oLiveData {HTMLElement} Pointer to live data.
|
|
|
* @param oConfigs {object} (optional) Object literal of configuration values.
|
|
|
*/
|
|
|
util.LocalDataSource = function(oLiveData, oConfigs) {
|
|
|
this.dataType = DS.TYPE_LOCAL;
|
|
|
|
|
|
if(oLiveData) {
|
|
|
if(YAHOO.lang.isArray(oLiveData)) { // array
|
|
|
this.responseType = DS.TYPE_JSARRAY;
|
|
|
}
|
|
|
// xml
|
|
|
else if(oLiveData.nodeType && oLiveData.nodeType == 9) {
|
|
|
this.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(oLiveData.nodeName && (oLiveData.nodeName.toLowerCase() == "table")) { // table
|
|
|
this.responseType = DS.TYPE_HTMLTABLE;
|
|
|
oLiveData = oLiveData.cloneNode(true);
|
|
|
}
|
|
|
else if(YAHOO.lang.isString(oLiveData)) { // text
|
|
|
this.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
else if(YAHOO.lang.isObject(oLiveData)) { // json
|
|
|
this.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
oLiveData = [];
|
|
|
this.responseType = DS.TYPE_JSARRAY;
|
|
|
}
|
|
|
|
|
|
util.LocalDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
|
|
|
};
|
|
|
|
|
|
// LocalDataSource extends DataSourceBase
|
|
|
lang.extend(util.LocalDataSource, DS);
|
|
|
|
|
|
// Copy static members to LocalDataSource class
|
|
|
lang.augmentObject(util.LocalDataSource, DS);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* FunctionDataSource class for JavaScript functions.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @class YAHOO.util.FunctionDataSource
|
|
|
* @extends YAHOO.util.DataSourceBase
|
|
|
* @constructor
|
|
|
* @param oLiveData {HTMLElement} Pointer to live data.
|
|
|
* @param oConfigs {object} (optional) Object literal of configuration values.
|
|
|
*/
|
|
|
util.FunctionDataSource = function(oLiveData, oConfigs) {
|
|
|
this.dataType = DS.TYPE_JSFUNCTION;
|
|
|
oLiveData = oLiveData || function() {};
|
|
|
|
|
|
util.FunctionDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
|
|
|
};
|
|
|
|
|
|
// FunctionDataSource extends DataSourceBase
|
|
|
lang.extend(util.FunctionDataSource, DS, {
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// FunctionDataSource public properties
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Context in which to execute the function. By default, is the DataSource
|
|
|
* instance itself. If set, the function will receive the DataSource instance
|
|
|
* as an additional argument.
|
|
|
*
|
|
|
* @property scope
|
|
|
* @type Object
|
|
|
* @default null
|
|
|
*/
|
|
|
scope : null,
|
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// FunctionDataSource public methods
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Overriding method passes query to a function. The returned response is then
|
|
|
* forwarded to the handleResponse function.
|
|
|
*
|
|
|
* @method makeConnection
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} Callback object literal.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Transaction ID.
|
|
|
*/
|
|
|
makeConnection : function(oRequest, oCallback, oCaller) {
|
|
|
var tId = DS._nTransactionId++;
|
|
|
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
// Pass the request in as a parameter and
|
|
|
// forward the return value to the handler
|
|
|
|
|
|
|
|
|
var oRawResponse = (this.scope) ? this.liveData.call(this.scope, oRequest, this) : this.liveData(oRequest);
|
|
|
|
|
|
// Try to sniff data type if it has not been defined
|
|
|
if(this.responseType === DS.TYPE_UNKNOWN) {
|
|
|
if(YAHOO.lang.isArray(oRawResponse)) { // array
|
|
|
this.responseType = DS.TYPE_JSARRAY;
|
|
|
}
|
|
|
// xml
|
|
|
else if(oRawResponse && oRawResponse.nodeType && oRawResponse.nodeType == 9) {
|
|
|
this.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(oRawResponse && oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
|
|
|
this.responseType = DS.TYPE_HTMLTABLE;
|
|
|
}
|
|
|
else if(YAHOO.lang.isObject(oRawResponse)) { // json
|
|
|
this.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
else if(YAHOO.lang.isString(oRawResponse)) { // text
|
|
|
this.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
this.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
|
|
|
return tId;
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
// Copy static members to FunctionDataSource class
|
|
|
lang.augmentObject(util.FunctionDataSource, DS);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* ScriptNodeDataSource class for accessing remote data via the YUI Get Utility.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @class YAHOO.util.ScriptNodeDataSource
|
|
|
* @extends YAHOO.util.DataSourceBase
|
|
|
* @constructor
|
|
|
* @param oLiveData {HTMLElement} Pointer to live data.
|
|
|
* @param oConfigs {object} (optional) Object literal of configuration values.
|
|
|
*/
|
|
|
util.ScriptNodeDataSource = function(oLiveData, oConfigs) {
|
|
|
this.dataType = DS.TYPE_SCRIPTNODE;
|
|
|
oLiveData = oLiveData || "";
|
|
|
|
|
|
util.ScriptNodeDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
|
|
|
};
|
|
|
|
|
|
// ScriptNodeDataSource extends DataSourceBase
|
|
|
lang.extend(util.ScriptNodeDataSource, DS, {
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// ScriptNodeDataSource public properties
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Alias to YUI Get Utility, to allow implementers to use a custom class.
|
|
|
*
|
|
|
* @property getUtility
|
|
|
* @type Object
|
|
|
* @default YAHOO.util.Get
|
|
|
*/
|
|
|
getUtility : util.Get,
|
|
|
|
|
|
/**
|
|
|
* Defines request/response management in the following manner:
|
|
|
* <dl>
|
|
|
* <!--<dt>queueRequests</dt>
|
|
|
* <dd>If a request is already in progress, wait until response is returned before sending the next request.</dd>
|
|
|
* <dt>cancelStaleRequests</dt>
|
|
|
* <dd>If a request is already in progress, cancel it before sending the next request.</dd>-->
|
|
|
* <dt>ignoreStaleResponses</dt>
|
|
|
* <dd>Send all requests, but handle only the response for the most recently sent request.</dd>
|
|
|
* <dt>allowAll</dt>
|
|
|
* <dd>Send all requests and handle all responses.</dd>
|
|
|
* </dl>
|
|
|
*
|
|
|
* @property asyncMode
|
|
|
* @type String
|
|
|
* @default "allowAll"
|
|
|
*/
|
|
|
asyncMode : "allowAll",
|
|
|
|
|
|
/**
|
|
|
* Callback string parameter name sent to the remote script. By default,
|
|
|
* requests are sent to
|
|
|
* <URI>?<scriptCallbackParam>=callbackFunction
|
|
|
*
|
|
|
* @property scriptCallbackParam
|
|
|
* @type String
|
|
|
* @default "callback"
|
|
|
*/
|
|
|
scriptCallbackParam : "callback",
|
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// ScriptNodeDataSource public methods
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Creates a request callback that gets appended to the script URI. Implementers
|
|
|
* can customize this string to match their server's query syntax.
|
|
|
*
|
|
|
* @method generateRequestCallback
|
|
|
* @return {String} String fragment that gets appended to script URI that
|
|
|
* specifies the callback function
|
|
|
*/
|
|
|
generateRequestCallback : function(id) {
|
|
|
return "&" + this.scriptCallbackParam + "=YAHOO.util.ScriptNodeDataSource.callbacks["+id+"]" ;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overridable method gives implementers access to modify the URI before the dynamic
|
|
|
* script node gets inserted. Implementers should take care not to return an
|
|
|
* invalid URI.
|
|
|
*
|
|
|
* @method doBeforeGetScriptNode
|
|
|
* @param {String} URI to the script
|
|
|
* @return {String} URI to the script
|
|
|
*/
|
|
|
doBeforeGetScriptNode : function(sUri) {
|
|
|
return sUri;
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Overriding method passes query to Get Utility. The returned
|
|
|
* response is then forwarded to the handleResponse function.
|
|
|
*
|
|
|
* @method makeConnection
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} Callback object literal.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Transaction ID.
|
|
|
*/
|
|
|
makeConnection : function(oRequest, oCallback, oCaller) {
|
|
|
var tId = DS._nTransactionId++;
|
|
|
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
// If there are no global pending requests, it is safe to purge global callback stack and global counter
|
|
|
if(util.ScriptNodeDataSource._nPending === 0) {
|
|
|
util.ScriptNodeDataSource.callbacks = [];
|
|
|
util.ScriptNodeDataSource._nId = 0;
|
|
|
}
|
|
|
|
|
|
// ID for this request
|
|
|
var id = util.ScriptNodeDataSource._nId;
|
|
|
util.ScriptNodeDataSource._nId++;
|
|
|
|
|
|
// Dynamically add handler function with a closure to the callback stack
|
|
|
var oSelf = this;
|
|
|
util.ScriptNodeDataSource.callbacks[id] = function(oRawResponse) {
|
|
|
if((oSelf.asyncMode !== "ignoreStaleResponses")||
|
|
|
(id === util.ScriptNodeDataSource.callbacks.length-1)) { // Must ignore stale responses
|
|
|
|
|
|
// Try to sniff data type if it has not been defined
|
|
|
if(oSelf.responseType === DS.TYPE_UNKNOWN) {
|
|
|
if(YAHOO.lang.isArray(oRawResponse)) { // array
|
|
|
oSelf.responseType = DS.TYPE_JSARRAY;
|
|
|
}
|
|
|
// xml
|
|
|
else if(oRawResponse.nodeType && oRawResponse.nodeType == 9) {
|
|
|
oSelf.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(oRawResponse.nodeName && (oRawResponse.nodeName.toLowerCase() == "table")) { // table
|
|
|
oSelf.responseType = DS.TYPE_HTMLTABLE;
|
|
|
}
|
|
|
else if(YAHOO.lang.isObject(oRawResponse)) { // json
|
|
|
oSelf.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
else if(YAHOO.lang.isString(oRawResponse)) { // text
|
|
|
oSelf.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
oSelf.handleResponse(oRequest, oRawResponse, oCallback, oCaller, tId);
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
|
|
|
delete util.ScriptNodeDataSource.callbacks[id];
|
|
|
};
|
|
|
|
|
|
// We are now creating a request
|
|
|
util.ScriptNodeDataSource._nPending++;
|
|
|
var sUri = this.liveData + oRequest + this.generateRequestCallback(id);
|
|
|
sUri = this.doBeforeGetScriptNode(sUri);
|
|
|
this.getUtility.script(sUri,
|
|
|
{autopurge: true,
|
|
|
onsuccess: util.ScriptNodeDataSource._bumpPendingDown,
|
|
|
onfail: util.ScriptNodeDataSource._bumpPendingDown});
|
|
|
|
|
|
return tId;
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
// Copy static members to ScriptNodeDataSource class
|
|
|
lang.augmentObject(util.ScriptNodeDataSource, DS);
|
|
|
|
|
|
// Copy static members to ScriptNodeDataSource class
|
|
|
lang.augmentObject(util.ScriptNodeDataSource, {
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// ScriptNodeDataSource private static properties
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Unique ID to track requests.
|
|
|
*
|
|
|
* @property _nId
|
|
|
* @type Number
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_nId : 0,
|
|
|
|
|
|
/**
|
|
|
* Counter for pending requests. When this is 0, it is safe to purge callbacks
|
|
|
* array.
|
|
|
*
|
|
|
* @property _nPending
|
|
|
* @type Number
|
|
|
* @private
|
|
|
* @static
|
|
|
*/
|
|
|
_nPending : 0,
|
|
|
|
|
|
/**
|
|
|
* Global array of callback functions, one for each request sent.
|
|
|
*
|
|
|
* @property callbacks
|
|
|
* @type Function[]
|
|
|
* @static
|
|
|
*/
|
|
|
callbacks : []
|
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* XHRDataSource class for accessing remote data via the YUI Connection Manager
|
|
|
* Utility
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @class YAHOO.util.XHRDataSource
|
|
|
* @extends YAHOO.util.DataSourceBase
|
|
|
* @constructor
|
|
|
* @param oLiveData {HTMLElement} Pointer to live data.
|
|
|
* @param oConfigs {object} (optional) Object literal of configuration values.
|
|
|
*/
|
|
|
util.XHRDataSource = function(oLiveData, oConfigs) {
|
|
|
this.dataType = DS.TYPE_XHR;
|
|
|
this.connMgr = this.connMgr || util.Connect;
|
|
|
oLiveData = oLiveData || "";
|
|
|
|
|
|
util.XHRDataSource.superclass.constructor.call(this, oLiveData, oConfigs);
|
|
|
};
|
|
|
|
|
|
// XHRDataSource extends DataSourceBase
|
|
|
lang.extend(util.XHRDataSource, DS, {
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// XHRDataSource public properties
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Alias to YUI Connection Manager, to allow implementers to use a custom class.
|
|
|
*
|
|
|
* @property connMgr
|
|
|
* @type Object
|
|
|
* @default YAHOO.util.Connect
|
|
|
*/
|
|
|
connMgr: null,
|
|
|
|
|
|
/**
|
|
|
* Defines request/response management in the following manner:
|
|
|
* <dl>
|
|
|
* <dt>queueRequests</dt>
|
|
|
* <dd>If a request is already in progress, wait until response is returned
|
|
|
* before sending the next request.</dd>
|
|
|
*
|
|
|
* <dt>cancelStaleRequests</dt>
|
|
|
* <dd>If a request is already in progress, cancel it before sending the next
|
|
|
* request.</dd>
|
|
|
*
|
|
|
* <dt>ignoreStaleResponses</dt>
|
|
|
* <dd>Send all requests, but handle only the response for the most recently
|
|
|
* sent request.</dd>
|
|
|
*
|
|
|
* <dt>allowAll</dt>
|
|
|
* <dd>Send all requests and handle all responses.</dd>
|
|
|
*
|
|
|
* </dl>
|
|
|
*
|
|
|
* @property connXhrMode
|
|
|
* @type String
|
|
|
* @default "allowAll"
|
|
|
*/
|
|
|
connXhrMode: "allowAll",
|
|
|
|
|
|
/**
|
|
|
* True if data is to be sent via POST. By default, data will be sent via GET.
|
|
|
*
|
|
|
* @property connMethodPost
|
|
|
* @type Boolean
|
|
|
* @default false
|
|
|
*/
|
|
|
connMethodPost: false,
|
|
|
|
|
|
/**
|
|
|
* The connection timeout defines how many milliseconds the XHR connection will
|
|
|
* wait for a server response. Any non-zero value will enable the Connection Manager's
|
|
|
* Auto-Abort feature.
|
|
|
*
|
|
|
* @property connTimeout
|
|
|
* @type Number
|
|
|
* @default 0
|
|
|
*/
|
|
|
connTimeout: 0,
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
//
|
|
|
// XHRDataSource public methods
|
|
|
//
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
|
* Overriding method passes query to Connection Manager. The returned
|
|
|
* response is then forwarded to the handleResponse function.
|
|
|
*
|
|
|
* @method makeConnection
|
|
|
* @param oRequest {Object} Request object.
|
|
|
* @param oCallback {Object} Callback object literal.
|
|
|
* @param oCaller {Object} (deprecated) Use oCallback.scope.
|
|
|
* @return {Number} Transaction ID.
|
|
|
*/
|
|
|
makeConnection : function(oRequest, oCallback, oCaller) {
|
|
|
|
|
|
var oRawResponse = null;
|
|
|
var tId = DS._nTransactionId++;
|
|
|
this.fireEvent("requestEvent", {tId:tId,request:oRequest,callback:oCallback,caller:oCaller});
|
|
|
|
|
|
// Set up the callback object and
|
|
|
// pass the request in as a URL query and
|
|
|
// forward the response to the handler
|
|
|
var oSelf = this;
|
|
|
var oConnMgr = this.connMgr;
|
|
|
var oQueue = this._oQueue;
|
|
|
|
|
|
/**
|
|
|
* Define Connection Manager success handler
|
|
|
*
|
|
|
* @method _xhrSuccess
|
|
|
* @param oResponse {Object} HTTPXMLRequest object
|
|
|
* @private
|
|
|
*/
|
|
|
var _xhrSuccess = function(oResponse) {
|
|
|
// If response ID does not match last made request ID,
|
|
|
// silently fail and wait for the next response
|
|
|
if(oResponse && (this.connXhrMode == "ignoreStaleResponses") &&
|
|
|
(oResponse.tId != oQueue.conn.tId)) {
|
|
|
return null;
|
|
|
}
|
|
|
// Error if no response
|
|
|
else if(!oResponse) {
|
|
|
this.fireEvent("dataErrorEvent", {request:oRequest, response:null,
|
|
|
callback:oCallback, caller:oCaller,
|
|
|
message:DS.ERROR_DATANULL});
|
|
|
|
|
|
// Send error response back to the caller with the error flag on
|
|
|
DS.issueCallback(oCallback,[oRequest, {error:true}], true, oCaller);
|
|
|
|
|
|
return null;
|
|
|
}
|
|
|
// Forward to handler
|
|
|
else {
|
|
|
// Try to sniff data type if it has not been defined
|
|
|
if(this.responseType === DS.TYPE_UNKNOWN) {
|
|
|
var ctype = (oResponse.getResponseHeader) ? oResponse.getResponseHeader["Content-Type"] : null;
|
|
|
if(ctype) {
|
|
|
// xml
|
|
|
if(ctype.indexOf("text/xml") > -1) {
|
|
|
this.responseType = DS.TYPE_XML;
|
|
|
}
|
|
|
else if(ctype.indexOf("application/json") > -1) { // json
|
|
|
this.responseType = DS.TYPE_JSON;
|
|
|
}
|
|
|
else if(ctype.indexOf("text/plain") > -1) { // text
|
|
|
this.responseType = DS.TYPE_TEXT;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
this.handleResponse(oRequest, oResponse, oCallback, oCaller, tId);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* Define Connection Manager failure handler
|
|
|
*
|
|
|
* @method _xhrFailure
|
|
|
* @param oResponse {Object} HTTPXMLRequest object
|
|
|
* @private
|
|
|
*/
|
|
|
var _xhrFailure = function(oResponse) {
|
|
|
this.fireEvent("dataErrorEvent", {request:oRequest, response: oResponse,
|
|
|
callback:oCallback, caller:oCaller,
|
|
|
message:DS.ERROR_DATAINVALID});
|
|
|
|
|
|
// Backward compatibility
|
|
|
if(lang.isString(this.liveData) && lang.isString(oRequest) &&
|
|
|
(this.liveData.lastIndexOf("?") !== this.liveData.length-1) &&
|
|
|
(oRequest.indexOf("?") !== 0)){
|
|
|
}
|
|
|
|
|
|
// Send failure response back to the caller with the error flag on
|
|
|
oResponse = oResponse || {};
|
|
|
oResponse.error = true;
|
|
|
DS.issueCallback(oCallback,[oRequest,oResponse],true, oCaller);
|
|
|
|
|
|
return null;
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* Define Connection Manager callback object
|
|
|
*
|
|
|
* @property _xhrCallback
|
|
|
* @param oResponse {Object} HTTPXMLRequest object
|
|
|
* @private
|
|
|
*/
|
|
|
var _xhrCallback = {
|
|
|
success:_xhrSuccess,
|
|
|
failure:_xhrFailure,
|
|
|
scope: this
|
|
|
};
|
|
|
|
|
|
// Apply Connection Manager timeout
|
|
|
if(lang.isNumber(this.connTimeout)) {
|
|
|
_xhrCallback.timeout = this.connTimeout;
|
|
|
}
|
|
|
|
|
|
// Cancel stale requests
|
|
|
if(this.connXhrMode == "cancelStaleRequests") {
|
|
|
// Look in queue for stale requests
|
|
|
if(oQueue.conn) {
|
|
|
if(oConnMgr.abort) {
|
|
|
oConnMgr.abort(oQueue.conn);
|
|
|
oQueue.conn = null;
|
|
|
}
|
|
|
else {
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Get ready to send the request URL
|
|
|
if(oConnMgr && oConnMgr.asyncRequest) {
|
|
|
var sLiveData = this.liveData;
|
|
|
var isPost = this.connMethodPost;
|
|
|
var sMethod = (isPost) ? "POST" : "GET";
|
|
|
// Validate request
|
|
|
var sUri = (isPost || !lang.isValue(oRequest)) ? sLiveData : sLiveData+oRequest;
|
|
|
var sRequest = (isPost) ? oRequest : null;
|
|
|
|
|
|
// Send the request right away
|
|
|
if(this.connXhrMode != "queueRequests") {
|
|
|
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest);
|
|
|
}
|
|
|
// Queue up then send the request
|
|
|
else {
|
|
|
// Found a request already in progress
|
|
|
if(oQueue.conn) {
|
|
|
var allRequests = oQueue.requests;
|
|
|
// Add request to queue
|
|
|
allRequests.push({request:oRequest, callback:_xhrCallback});
|
|
|
|
|
|
// Interval needs to be started
|
|
|
if(!oQueue.interval) {
|
|
|
oQueue.interval = setInterval(function() {
|
|
|
// Connection is in progress
|
|
|
if(oConnMgr.isCallInProgress(oQueue.conn)) {
|
|
|
return;
|
|
|
}
|
|
|
else {
|
|
|
// Send next request
|
|
|
if(allRequests.length > 0) {
|
|
|
// Validate request
|
|
|
sUri = (isPost || !lang.isValue(allRequests[0].request)) ? sLiveData : sLiveData+allRequests[0].request;
|
|
|
sRequest = (isPost) ? allRequests[0].request : null;
|
|
|
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, allRequests[0].callback, sRequest);
|
|
|
|
|
|
// Remove request from queue
|
|
|
allRequests.shift();
|
|
|
}
|
|
|
// No more requests
|
|
|
else {
|
|
|
clearInterval(oQueue.interval);
|
|
|
oQueue.interval = null;
|
|
|
}
|
|
|
}
|
|
|
}, 50);
|
|
|
}
|
|
|
}
|
|
|
// Nothing is in progress
|
|
|
else {
|
|
|
oQueue.conn = oConnMgr.asyncRequest(sMethod, sUri, _xhrCallback, sRequest);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
// Send null response back to the caller with the error flag on
|
|
|
DS.issueCallback(oCallback,[oRequest,{error:true}],true,oCaller);
|
|
|
}
|
|
|
|
|
|
return tId;
|
|
|
}
|
|
|
|
|
|
});
|
|
|
|
|
|
// Copy static members to XHRDataSource class
|
|
|
lang.augmentObject(util.XHRDataSource, DS);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* Factory class for creating a BaseDataSource subclass instance. The sublcass is
|
|
|
* determined by oLiveData's type, unless the dataType config is explicitly passed in.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @class YAHOO.util.DataSource
|
|
|
* @constructor
|
|
|
* @param oLiveData {HTMLElement} Pointer to live data.
|
|
|
* @param oConfigs {object} (optional) Object literal of configuration values.
|
|
|
*/
|
|
|
util.DataSource = function(oLiveData, oConfigs) {
|
|
|
oConfigs = oConfigs || {};
|
|
|
|
|
|
// Point to one of the subclasses, first by dataType if given, then by sniffing oLiveData type.
|
|
|
var dataType = oConfigs.dataType;
|
|
|
if(dataType) {
|
|
|
if(dataType == DS.TYPE_LOCAL) {
|
|
|
lang.augmentObject(util.DataSource, util.LocalDataSource);
|
|
|
return new util.LocalDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
else if(dataType == DS.TYPE_XHR) {
|
|
|
lang.augmentObject(util.DataSource, util.XHRDataSource);
|
|
|
return new util.XHRDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
else if(dataType == DS.TYPE_SCRIPTNODE) {
|
|
|
lang.augmentObject(util.DataSource, util.ScriptNodeDataSource);
|
|
|
return new util.ScriptNodeDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
else if(dataType == DS.TYPE_JSFUNCTION) {
|
|
|
lang.augmentObject(util.DataSource, util.FunctionDataSource);
|
|
|
return new util.FunctionDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if(YAHOO.lang.isString(oLiveData)) { // strings default to xhr
|
|
|
lang.augmentObject(util.DataSource, util.XHRDataSource);
|
|
|
return new util.XHRDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
else if(YAHOO.lang.isFunction(oLiveData)) {
|
|
|
lang.augmentObject(util.DataSource, util.FunctionDataSource);
|
|
|
return new util.FunctionDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
else { // ultimate default is local
|
|
|
lang.augmentObject(util.DataSource, util.LocalDataSource);
|
|
|
return new util.LocalDataSource(oLiveData, oConfigs);
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// Copy static members to DataSource class
|
|
|
lang.augmentObject(util.DataSource, DS);
|
|
|
|
|
|
})();
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
/**
|
|
|
* The static Number class provides helper functions to deal with data of type
|
|
|
* Number.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @requires yahoo
|
|
|
* @class Number
|
|
|
* @static
|
|
|
*/
|
|
|
YAHOO.util.Number = {
|
|
|
|
|
|
/**
|
|
|
* Takes a native JavaScript Number and formats to string for display to user.
|
|
|
*
|
|
|
* @method format
|
|
|
* @param nData {Number} Number.
|
|
|
* @param oConfig {Object} (Optional) Optional configuration values:
|
|
|
* <dl>
|
|
|
* <dt>prefix {String}</dd>
|
|
|
* <dd>String prepended before each number, like a currency designator "$"</dd>
|
|
|
* <dt>decimalPlaces {Number}</dd>
|
|
|
* <dd>Number of decimal places to round.</dd>
|
|
|
* <dt>decimalSeparator {String}</dd>
|
|
|
* <dd>Decimal separator</dd>
|
|
|
* <dt>thousandsSeparator {String}</dd>
|
|
|
* <dd>Thousands separator</dd>
|
|
|
* <dt>suffix {String}</dd>
|
|
|
* <dd>String appended after each number, like " items" (note the space)</dd>
|
|
|
* <dt>negativeFormat</dt>
|
|
|
* <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>
|
|
|
* </dl>
|
|
|
* @return {String} Formatted number for display. Note, the following values
|
|
|
* return as "": null, undefined, NaN, "".
|
|
|
*/
|
|
|
format : function(n, cfg) {
|
|
|
if (!isFinite(+n)) {
|
|
|
return '';
|
|
|
}
|
|
|
|
|
|
n = !isFinite(+n) ? 0 : +n;
|
|
|
cfg = YAHOO.lang.merge(YAHOO.util.Number.format.defaults, (cfg || {}));
|
|
|
|
|
|
var neg = n < 0, absN = Math.abs(n),
|
|
|
places = cfg.decimalPlaces,
|
|
|
sep = cfg.thousandsSeparator,
|
|
|
s, bits, i;
|
|
|
|
|
|
if (places < 0) {
|
|
|
// Get rid of the decimal info
|
|
|
s = absN - (absN % 1) + '';
|
|
|
i = s.length + places;
|
|
|
|
|
|
// avoid 123 vs decimalPlaces -4 (should return "0")
|
|
|
if (i > 0) {
|
|
|
// leverage toFixed by making 123 => 0.123 for the rounding
|
|
|
// operation, then add the appropriate number of zeros back on
|
|
|
s = Number('.' + s).toFixed(i).slice(2) +
|
|
|
new Array(s.length - i + 1).join('0');
|
|
|
} else {
|
|
|
s = "0";
|
|
|
}
|
|
|
} else { // There is a bug in IE's toFixed implementation:
|
|
|
// for n in {(-0.94, -0.5], [0.5, 0.94)} n.toFixed() returns 0
|
|
|
// instead of -1 and 1. Manually handle that case.
|
|
|
s = absN < 1 && absN >= 0.5 && !places ? '1' : absN.toFixed(places);
|
|
|
}
|
|
|
|
|
|
if (absN > 1000) {
|
|
|
bits = s.split(/\D/);
|
|
|
i = bits[0].length % 3 || 3;
|
|
|
|
|
|
bits[0] = bits[0].slice(0,i) +
|
|
|
bits[0].slice(i).replace(/(\d{3})/g, sep + '$1');
|
|
|
|
|
|
s = bits.join(cfg.decimalSeparator);
|
|
|
}
|
|
|
|
|
|
s = cfg.prefix + s + cfg.suffix;
|
|
|
|
|
|
return neg ? cfg.negativeFormat.replace(/#/,s) : s;
|
|
|
}
|
|
|
};
|
|
|
YAHOO.util.Number.format.defaults = {
|
|
|
decimalSeparator : '.',
|
|
|
decimalPlaces : null,
|
|
|
thousandsSeparator : '',
|
|
|
prefix : '',
|
|
|
suffix : '',
|
|
|
negativeFormat : '-#'
|
|
|
};
|
|
|
|
|
|
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
/****************************************************************************/
|
|
|
|
|
|
(function () {
|
|
|
|
|
|
var xPad=function (x, pad, r)
|
|
|
{
|
|
|
if(typeof r === 'undefined')
|
|
|
{
|
|
|
r=10;
|
|
|
}
|
|
|
for( ; parseInt(x, 10)<r && r>1; r/=10) {
|
|
|
x = pad.toString() + x;
|
|
|
}
|
|
|
return x.toString();
|
|
|
};
|
|
|
|
|
|
|
|
|
/**
|
|
|
* The static Date class provides helper functions to deal with data of type Date.
|
|
|
*
|
|
|
* @namespace YAHOO.util
|
|
|
* @requires yahoo
|
|
|
* @class Date
|
|
|
* @static
|
|
|
*/
|
|
|
var Dt = {
|
|
|
formats: {
|
|
|
a: function (d, l) { return l.a[d.getDay()]; },
|
|
|
A: function (d, l) { return l.A[d.getDay()]; },
|
|
|
b: function (d, l) { return l.b[d.getMonth()]; },
|
|
|
B: function (d, l) { return l.B[d.getMonth()]; },
|
|
|
C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
|
|
|
d: ['getDate', '0'],
|
|
|
e: ['getDate', ' '],
|
|
|
g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
|
|
|
G: function (d) {
|
|
|
var y = d.getFullYear();
|
|
|
var V = parseInt(Dt.formats.V(d), 10);
|
|
|
var W = parseInt(Dt.formats.W(d), 10);
|
|
|
|
|
|
if(W > V) {
|
|
|
y++;
|
|
|
} else if(W===0 && V>=52) {
|
|
|
y--;
|
|
|
}
|
|
|
|
|
|
return y;
|
|
|
},
|
|
|
H: ['getHours', '0'],
|
|
|
I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
|
|
|
j: function (d) {
|
|
|
var gmd_1 = new Date('' + d.getFullYear() + '/1/1 GMT');
|
|
|
var gmdate = new Date('' + d.getFullYear() + '/' + (d.getMonth()+1) + '/' + d.getDate() + ' GMT');
|
|
|
var ms = gmdate - gmd_1;
|
|
|
var doy = parseInt(ms/60000/60/24, 10)+1;
|
|
|
return xPad(doy, 0, 100);
|
|
|
},
|
|
|
k: ['getHours', ' '],
|
|
|
l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, ' '); },
|
|
|
m: function (d) { return xPad(d.getMonth()+1, 0); },
|
|
|
M: ['getMinutes', '0'],
|
|
|
p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
|
|
|
P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
|
|
|
s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
|
|
|
S: ['getSeconds', '0'],
|
|
|
u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
|
|
|
U: function (d) {
|
|
|
var doy = parseInt(Dt.formats.j(d), 10);
|
|
|
var rdow = 6-d.getDay();
|
|
|
var woy = parseInt((doy+rdow)/7, 10);
|
|
|
return xPad(woy, 0);
|
|
|
},
|
|
|
V: function (d) {
|
|
|
var woy = parseInt(Dt.formats.W(d), 10);
|
|
|
var dow1_1 = (new Date('' + d.getFullYear() + '/1/1')).getDay();
|
|
|
// First week is 01 and not 00 as in the case of %U and %W,
|
|
|
// so we add 1 to the final result except if day 1 of the year
|
|
|
// is a Monday (then %W returns 01).
|
|
|
// We also need to subtract 1 if the day 1 of the year is
|
|
|
// Friday-Sunday, so the resulting equation becomes:
|
|
|
var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
|
|
|
if(idow === 53 && (new Date('' + d.getFullYear() + '/12/31')).getDay() < 4)
|
|
|
{
|
|
|
idow = 1;
|
|
|
}
|
|
|
else if(idow === 0)
|
|
|
{
|
|
|
idow = Dt.formats.V(new Date('' + (d.getFullYear()-1) + '/12/31'));
|
|
|
}
|
|
|
|
|
|
return xPad(idow, 0);
|
|
|
},
|
|
|
w: 'getDay',
|
|
|
W: function (d) {
|
|
|
var doy = parseInt(Dt.formats.j(d), 10);
|
|
|
var rdow = 7-Dt.formats.u(d);
|
|
|
var woy = parseInt((doy+rdow)/7, 10);
|
|
|
return xPad(woy, 0, 10);
|
|
|
},
|
|
|
y: function (d) { return xPad(d.getFullYear()%100, 0); },
|
|
|
Y: 'getFullYear',
|
|
|
z: function (d) {
|
|
|
var o = d.getTimezoneOffset();
|
|
|
var H = xPad(parseInt(Math.abs(o/60), 10), 0);
|
|
|
var M = xPad(Math.abs(o%60), 0);
|
|
|
return (o>0?'-':'+') + H + M;
|
|
|
},
|
|
|
Z: function (d) {
|
|
|
var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, '$2').replace(/[a-z ]/g, '');
|
|
|
if(tz.length > 4) {
|
|
|
tz = Dt.formats.z(d);
|
|
|
}
|
|
|
return tz;
|
|
|
},
|
|
|
'%': function (d) { return '%'; }
|
|
|
},
|
|
|
|
|
|
aggregates: {
|
|
|
c: 'locale',
|
|
|
D: '%m/%d/%y',
|
|
|
F: '%Y-%m-%d',
|
|
|
h: '%b',
|
|
|
n: '\n',
|
|
|
r: 'locale',
|
|
|
R: '%H:%M',
|
|
|
t: '\t',
|
|
|
T: '%H:%M:%S',
|
|
|
x: 'locale',
|
|
|
X: 'locale'
|
|
|
//'+': '%a %b %e %T %Z %Y'
|
|
|
},
|
|
|
|
|
|
/**
|
|
|
* Takes a native JavaScript Date and formats to string for display to user.
|
|
|
*
|
|
|
* @method format
|
|
|
* @param oDate {Date} Date.
|
|
|
* @param oConfig {Object} (Optional) Object literal of configuration values:
|
|
|
* <dl>
|
|
|
* <dt>format <String></dt>
|
|
|
* <dd>
|
|
|
* <p>
|
|
|
* Any strftime string is supported, such as "%I:%M:%S %p". strftime has several format specifiers defined by the Open group at
|
|
|
* <a href="http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html">http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html</a>
|
|
|
* </p>
|
|
|
* <p>
|
|
|
* PHP added a few of its own, defined at <a href="http://www.php.net/strftime">http://www.php.net/strftime</a>
|
|
|
* </p>
|
|
|
* <p>
|
|
|
* This javascript implementation supports all the PHP specifiers and a few more. The full list is below:
|
|
|
* </p>
|
|
|
* <dl>
|
|
|
* <dt>%a</dt> <dd>abbreviated weekday name according to the current locale</dd>
|
|
|
* <dt>%A</dt> <dd>full weekday name according to the current locale</dd>
|
|
|
* <dt>%b</dt> <dd>abbreviated month name according to the current locale</dd>
|
|
|
* <dt>%B</dt> <dd>full month name according to the current locale</dd>
|
|
|
* <dt>%c</dt> <dd>preferred date and time representation for the current locale</dd>
|
|
|
* <dt>%C</dt> <dd>century number (the year divided by 100 and truncated to an integer, range 00 to 99)</dd>
|
|
|
* <dt>%d</dt> <dd>day of the month as a decimal number (range 01 to 31)</dd>
|
|
|
* <dt>%D</dt> <dd>same as %m/%d/%y</dd>
|
|
|
* <dt>%e</dt> <dd>day of the month as a decimal number, a single digit is preceded by a space (range ' 1' to '31')</dd>
|
|
|
* <dt>%F</dt> <dd>same as %Y-%m-%d (ISO 8601 date format)</dd>
|
|
|
* <dt>%g</dt> <dd>like %G, but without the century</dd>
|
|
|
* <dt>%G</dt> <dd>The 4-digit year corresponding to the ISO week number</dd>
|
|
|
* <dt>%h</dt> <dd>same as %b</dd>
|
|
|
* <dt>%H</dt> <dd>hour as a decimal number using a 24-hour clock (range 00 to 23)</dd>
|
|
|
* <dt>%I</dt> <dd>hour as a decimal number using a 12-hour clock (range 01 to 12)</dd>
|
|
|
* <dt>%j</dt> <dd>day of the year as a decimal number (range 001 to 366)</dd>
|
|
|
* <dt>%k</dt> <dd>hour as a decimal number using a 24-hour clock (range 0 to 23); single digits are preceded by a blank. (See also %H.)</dd>
|
|
|
* <dt>%l</dt> <dd>hour as a decimal number using a 12-hour clock (range 1 to 12); single digits are preceded by a blank. (See also %I.) </dd>
|
|
|
* <dt>%m</dt> <dd>month as a decimal number (range 01 to 12)</dd>
|
|
|
* <dt>%M</dt> <dd>minute as a decimal number</dd>
|
|
|
* <dt>%n</dt> <dd>newline character</dd>
|
|
|
* <dt>%p</dt> <dd>either `AM' or `PM' according to the given time value, or the corresponding strings for the current locale</dd>
|
|
|
* <dt>%P</dt> <dd>like %p, but lower case</dd>
|
|
|
* <dt>%r</dt> <dd>time in a.m. and p.m. notation equal to %I:%M:%S %p</dd>
|
|
|
* <dt>%R</dt> <dd>time in 24 hour notation equal to %H:%M</dd>
|
|
|
* <dt>%s</dt> <dd>number of seconds since the Epoch, ie, since 1970-01-01 00:00:00 UTC</dd>
|
|
|
* <dt>%S</dt> <dd>second as a decimal number</dd>
|
|
|
* <dt>%t</dt> <dd>tab character</dd>
|
|
|
* <dt>%T</dt> <dd>current time, equal to %H:%M:%S</dd>
|
|
|
* <dt>%u</dt> <dd>weekday as a decimal number [1,7], with 1 representing Monday</dd>
|
|
|
* <dt>%U</dt> <dd>week number of the current year as a decimal number, starting with the
|
|
|
* first Sunday as the first day of the first week</dd>
|
|
|
* <dt>%V</dt> <dd>The ISO 8601:1988 week number of the current year as a decimal number,
|
|
|
* range 01 to 53, where week 1 is the first week that has at least 4 days
|
|
|
* in the current year, and with Monday as the first day of the week.</dd>
|
|
|
* <dt>%w</dt> <dd>day of the week as a decimal, Sunday being 0</dd>
|
|
|
* <dt>%W</dt> <dd>week number of the current year as a decimal number, starting with the
|
|
|
* first Monday as the first day of the first week</dd>
|
|
|
* <dt>%x</dt> <dd>preferred date representation for the current locale without the time</dd>
|
|
|
* <dt>%X</dt> <dd>preferred time representation for the current locale without the date</dd>
|
|
|
* <dt>%y</dt> <dd>year as a decimal number without a century (range 00 to 99)</dd>
|
|
|
* <dt>%Y</dt> <dd>year as a decimal number including the century</dd>
|
|
|
* <dt>%z</dt> <dd>numerical time zone representation</dd>
|
|
|
* <dt>%Z</dt> <dd>time zone name or abbreviation</dd>
|
|
|
* <dt>%%</dt> <dd>a literal `%' character</dd>
|
|
|
* </dl>
|
|
|
* </dd>
|
|
|
* </dl>
|
|
|
* @param sLocale {String} (Optional) The locale to use when displaying days of week,
|
|
|
* months of the year, and other locale specific strings. The following locales are
|
|
|
* built in:
|
|
|
* <dl>
|
|
|
* <dt>en</dt>
|
|
|
* <dd>English</dd>
|
|
|
* <dt>en-US</dt>
|
|
|
* <dd>US English</dd>
|
|
|
* <dt>en-GB</dt>
|
|
|
* <dd>British English</dd>
|
|
|
* <dt>en-AU</dt>
|
|
|
* <dd>Australian English (identical to British English)</dd>
|
|
|
* </dl>
|
|
|
* More locales may be added by subclassing of YAHOO.util.DateLocale.
|
|
|
* See YAHOO.util.DateLocale for more information.
|
|
|
* @return {String} Formatted date for display.
|
|
|
* @sa YAHOO.util.DateLocale
|
|
|
*/
|
|
|
format : function (oDate, oConfig, sLocale) {
|
|
|
oConfig = oConfig || {};
|
|
|
|
|
|
if(!(oDate instanceof Date)) {
|
|
|
return YAHOO.lang.isValue(oDate) ? oDate : "";
|
|
|
}
|
|
|
|
|
|
var format = oConfig.format || "%m/%d/%Y";
|
|
|
|
|
|
// Be backwards compatible, support strings that are
|
|
|
// exactly equal to YYYY/MM/DD, DD/MM/YYYY and MM/DD/YYYY
|
|
|
if(format === 'YYYY/MM/DD') {
|
|
|
format = '%Y/%m/%d';
|
|
|
} else if(format === 'DD/MM/YYYY') {
|
|
|
format = '%d/%m/%Y';
|
|
|
} else if(format === 'MM/DD/YYYY') {
|
|
|
format = '%m/%d/%Y';
|
|
|
}
|
|
|
// end backwards compatibility block
|
|
|
|
|
|
sLocale = sLocale || "en";
|
|
|
|
|
|
// Make sure we have a definition for the requested locale, or default to en.
|
|
|
if(!(sLocale in YAHOO.util.DateLocale)) {
|
|
|
if(sLocale.replace(/-[a-zA-Z]+$/, '') in YAHOO.util.DateLocale) {
|
|
|
sLocale = sLocale.replace(/-[a-zA-Z]+$/, '');
|
|
|
} else {
|
|
|
sLocale = "en";
|
|
|
}
|
|
|
}
|
|
|
|
|
|
var aLocale = YAHOO.util.DateLocale[sLocale];
|
|
|
|
|
|
var replace_aggs = function (m0, m1) {
|
|
|
var f = Dt.aggregates[m1];
|
|
|
return (f === 'locale' ? aLocale[m1] : f);
|
|
|
};
|
|
|
|
|
|
var replace_formats = function (m0, m1) {
|
|
|
var f = Dt.formats[m1];
|
|
|
if(typeof f === 'string') { // string => built in date function
|
|
|
return oDate[f]();
|
|
|
} else if(typeof f === 'function') { // function => our own function
|
|
|
return f.call(oDate, oDate, aLocale);
|
|
|
} else if(typeof f === 'object' && typeof f[0] === 'string') { // built in function with padding
|
|
|
return xPad(oDate[f[0]](), f[1]);
|
|
|
} else {
|
|
|
return m1;
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// First replace aggregates (run in a loop because an agg may be made up of other aggs)
|
|
|
while(format.match(/%[cDFhnrRtTxX]/)) {
|
|
|
format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
|
|
|
}
|
|
|
|
|
|
// Now replace formats (do not run in a loop otherwise %%a will be replace with the value of %a)
|
|
|
var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);
|
|
|
|
|
|
replace_aggs = replace_formats = undefined;
|
|
|
|
|
|
return str;
|
|
|
}
|
|
|
};
|
|
|
|
|
|
YAHOO.namespace("YAHOO.util");
|
|
|
YAHOO.util.Date = Dt;
|
|
|
|
|
|
/**
|
|
|
* The DateLocale class is a container and base class for all
|
|
|
* localised date strings used by YAHOO.util.Date. It is used
|
|
|
* internally, but may be extended to provide new date localisations.
|
|
|
*
|
|
|
* To create your own DateLocale, follow these steps:
|
|
|
* <ol>
|
|
|
* <li>Find an existing locale that matches closely with your needs</li>
|
|
|
* <li>Use this as your base class. Use YAHOO.util.DateLocale if nothing
|
|
|
* matches.</li>
|
|
|
* <li>Create your own class as an extension of the base class using
|
|
|
* YAHOO.lang.merge, and add your own localisations where needed.</li>
|
|
|
* </ol>
|
|
|
* See the YAHOO.util.DateLocale['en-US'] and YAHOO.util.DateLocale['en-GB']
|
|
|
* classes which extend YAHOO.util.DateLocale['en'].
|
|
|
*
|
|
|
* For example, to implement locales for French french and Canadian french,
|
|
|
* we would do the following:
|
|
|
* <ol>
|
|
|
* <li>For French french, we have no existing similar locale, so use
|
|
|
* YAHOO.util.DateLocale as the base, and extend it:
|
|
|
* <pre>
|
|
|
* YAHOO.util.DateLocale['fr'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {
|
|
|
* a: ['dim', 'lun', 'mar', 'mer', 'jeu', 'ven', 'sam'],
|
|
|
* A: ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi'],
|
|
|
* b: ['jan', 'fév', 'mar', 'avr', 'mai', 'jun', 'jui', 'aoû', 'sep', 'oct', 'nov', 'déc'],
|
|
|
* B: ['janvier', 'février', 'mars', 'avril', 'mai', 'juin', 'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'],
|
|
|
* c: '%a %d %b %Y %T %Z',
|
|
|
* p: ['', ''],
|
|
|
* P: ['', ''],
|
|
|
* x: '%d.%m.%Y',
|
|
|
* X: '%T'
|
|
|
* });
|
|
|
* </pre>
|
|
|
* </li>
|
|
|
* <li>For Canadian french, we start with French french and change the meaning of \%x:
|
|
|
* <pre>
|
|
|
* YAHOO.util.DateLocale['fr-CA'] = YAHOO.lang.merge(YAHOO.util.DateLocale['fr'], {
|
|
|
* x: '%Y-%m-%d'
|
|
|
* });
|
|
|
* </pre>
|
|
|
* </li>
|
|
|
* </ol>
|
|
|
*
|
|
|
* With that, you can use your new locales:
|
|
|
* <pre>
|
|
|
* var d = new Date("2008/04/22");
|
|
|
* YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr");
|
|
|
* </pre>
|
|
|
* will return:
|
|
|
* <pre>
|
|
|
* mardi, 22 avril == 22.04.2008
|
|
|
* </pre>
|
|
|
* And
|
|
|
* <pre>
|
|
|
* YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr-CA");
|
|
|
* </pre>
|
|
|
* Will return:
|
|
|
* <pre>
|
|
|
* mardi, 22 avril == 2008-04-22
|
|
|
* </pre>
|
|
|
* @namespace YAHOO.util
|
|
|
* @requires yahoo
|
|
|
* @class DateLocale
|
|
|
*/
|
|
|
YAHOO.util.DateLocale = {
|
|
|
a: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
|
|
|
A: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
|
|
|
b: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
|
|
|
B: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
|
|
|
c: '%a %d %b %Y %T %Z',
|
|
|
p: ['AM', 'PM'],
|
|
|
P: ['am', 'pm'],
|
|
|
r: '%I:%M:%S %p',
|
|
|
x: '%d/%m/%y',
|
|
|
X: '%T'
|
|
|
};
|
|
|
|
|
|
YAHOO.util.DateLocale['en'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {});
|
|
|
|
|
|
YAHOO.util.DateLocale['en-US'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
|
|
|
c: '%a %d %b %Y %I:%M:%S %p %Z',
|
|
|
x: '%m/%d/%Y',
|
|
|
X: '%I:%M:%S %p'
|
|
|
});
|
|
|
|
|
|
YAHOO.util.DateLocale['en-GB'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
|
|
|
r: '%l:%M:%S %P %Z'
|
|
|
});
|
|
|
YAHOO.util.DateLocale['en-AU'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en']);
|
|
|
|
|
|
})();
|
|
|
|
|
|
YAHOO.register("datasource", YAHOO.util.DataSource, {version: "2.8.2r1", build: "7"});
|
|
|
|
