/*
 * jQuery JavaScript Library v1.3.2
 *
 * Copyright (c) 2009 John Resig, http://jquery.com/
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Date: 2009-02-19 17:34:21 -0500 (Thu, 19 Feb 2009)
 * Revision: 6246
 */
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/*
 * Sizzle CSS Selector Engine - v0.9.3
 *  Copyright 2009, The Dojo Foundation
 *  More information: http://sizzlejs.com/
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
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MarketRatesDataEngine = function(options)
{
  /*
   * Defaults objects
   * @param dataURL - the url the get the json data
   * @param timerDelay - the delay between each requset 
   * @param autoStart - true to statr get requset in instanse creation
   * @param callbacks - array of callbacks to be called on instruent change
   * @param ratesList - array of rates list to be added to each requset
   */
  var defaults =
  {
    baseURL: 'http://webrates2.leverate.com/MarketRates/',
    initAction: 'Init',
    getDataAction: 'GetData',
    timerDelay: 2000,
    autoStart:false,
    clientID:null,
    callbacks:[],
    initCallbacks:[],
    ratesList:[]
  }
  
  //public Market Rate Status enum
  var marketRateStatus = 
  {
    noChange:0,
    up:1,
    down:2
  };
  
  //private data members
  var base,
      config,
      lastServerTime,
      ratesListAsString,
      oldRatesData,
      isActive = false;
  
  /*
   * Public set rates list in array format
   * @param ratesList  - rates list to replace 
   */
  setRatesList = function(ratesList)
  {
    config.ratesList = ratesList;
    ratesListAsString = ratesList.join(',');
  };
  
  /*
   * Public add rates list in to exsisting list in array format
   * @param ratesList  - rates list to add 
   */
  addRatesList = function(ratesList)
  {
    config.ratesList = $.extend(config.ratesList,ratesList);
    ratesListAsString =  config.ratesList.join(',');
  };
  
  /*
   * Public add callback function to be fired on instrument change
   * @param func  - the function will be called with the following params
   * rowData - the data of the new instrument 
   * bidRateStatus - the enum indecaties the status of the bid rate 
   * askRateStatus - the enum indecaties the status of the ask rate,
   * oldRateData - the previous instrument data
   *  
   */
  addCallback = function(func)
  {
    config.callbacks.push(func)
  };
  
  addInitCallback = function(func)
  {
    config.initCallbacks.push(func)
  };
  
  /*
   * Public  Start the data engine to requesting data from the server
   */
  start = function()
  {
    if(!isActive)
    {
      isActive = true;
      getInitData();
    }
  };
  
  /*                                 
   * Public  Stop the data engine from requesting data from the server
   */ 
  stop = function()
  {
    isActive = false;
  };
  
  getInitData = function()
  {
    $.ajax({
		  type: "GET",
			url: config.baseURL+config.initAction ,
			data: {clientID: config.clientID, style: config.style },
			success: getInitDataCallback,
			dataType: 'jsonp'
		});
  };
  
  getInitDataCallback = function(result)
  {
    if (result.success) 
    {
      $.each(config.initCallbacks,function()
		  {
		    this(result.Data);
		  });
		  
		  getData();
    }
  };
  
  /*
	 * Fetch json rates data from the setver , send the last server time the each requset
	 */
  var getData = function() 
  {
	  $.ajax({
		  type: "GET",
			url: config.baseURL+config.getDataAction ,
			data: { lastServerTime: lastServerTime,crosses:ratesListAsString },
			success: getDataCallback,
			dataType: 'jsonp'
		});
	}

	/*
	 * Json data return callback
	 * read new data form the server and update the table
	 */
	var getDataCallback = function(result) 
	{
		if (result.success) 
		{
			//set last server time for the next requset;
			lastServerTime = result.Data.ServerTime;

			//handle each instrument needed to update
			$.each(result.Data.InstrumentRates, function() 
			{
				handleRowUpdate(this);
			});

			//set timeout the call the next rates update
			if(isActive)
			{
			  setTimeout(getData, config.timerDelay);
			}
		}
	}
	
	/*
	 * handle each row update by checking if the data was changed and fire the callback functions
	 */
	var handleRowUpdate = function(rowData) 
	{
	  //prepare working data
	  var oldRateData = oldRatesData[rowData.InstrumentName],
	      bidRateStatus = marketRateStatus.noChange,
	      askRateStatus = marketRateStatus.noChange;
	  
	  //check if we have valid old data object
	  if(oldRateData == null)
	  {
      oldRateData = 
      {
        BidRate : Number.MIN_VALUE,
        AskRate : Number.MIN_VALUE
      }
		}
		
		//update the status of the bid rate
		if(oldRateData.BidRate !== rowData.BidRate)
		{
		  bidRateStatus = oldRateData.BidRate < rowData.BidRate ? marketRateStatus.up : marketRateStatus.down; 
		}
		//update the status of the ask rate
		if(oldRateData.AskRate !== rowData.AskRate)
		{
		  askRateStatus = oldRateData.AskRate < rowData.AskRate ?  marketRateStatus.up :  marketRateStatus.down 
		}
		
		//chekc if we hand a change in one of the rates and fire the callback functions
		if(bidRateStatus !==  marketRateStatus.noChange || askRateStatus !== marketRateStatus.noChange)
		{
		  $.each(config.callbacks,function()
		  {
		    this(rowData,bidRateStatus,askRateStatus,oldRateData);
		  });
		}
		
		//update the old data by instrument name
	  oldRatesData[rowData.InstrumentName] =  rowData;
	}

  init = function()
  {
    // To avoid scope issues, use 'base' instead of 'this'
    base = this;
  
		// Extend config with defults and options passed from the user 
		config = $.extend({}, defaults, options);
   
    //init last date
	  lastServerTime = null;
    
    oldRatesData = [];
		setRatesList(config.ratesList)
		
		//get init data
		if(config.autoStart)
		{
		 start()
		}
  }
  
  //make public functions
  this.setRatesList = setRatesList;
  this.addRatesList = addRatesList;
  this.addCallback = addCallback;
  this.addInitCallback = addInitCallback;
  this.start = start;
  this.stop = stop;
  this.marketRateStatus = marketRateStatus;
  
  init();
};

/*
* market status jQuery plugin show current market rates in a table format
*
* usage : $(#test).marketRates({timerDelay:5000})
*/
(function($) {

//	var constants =
//	{
//		ratesURL: '/MarketRates',
//		logoPath: '/Images/'
//	};

	/*
	* defaults object
	* @param symbolText - symbol text in header table
	* @param statusText - status text in header table
	* @param bidText - bid text in header table
	* @param askText - ask text in header table
	* @param timerDelay - the delay between each update
	* @param rowIdPrefix - string prefix to be added to each tr (row) id with the instrument name
	* @param marketStatusDownClass - default css class to be added to status column (default is down arrow)
	* @param marketStatusUpClass - the css calls indecates market rising (up arrow)
	*/
	var defaults =
  {
		engine:null,
		//pageBackgroundColor: '',
  	symbolText: 'Symbol',
  	statusText: '-/+',
  	bidText: 'Bid',
  	askText: 'Ask',
  	rowIdPrefix: 'market-rates_',
  	marketStatusDownClass: 'market-rates-status-down',
  	marketStatusUpClass: 'market-rates-status-up',
  	tableCssClass: 'market-rates',
  	tableInstrumentCssClass: 'market-rates-instrument',
  	tableHeaderCssClass: 'market-rates-header',
  	marketLogoCssClass: 'market-rates-logo',
  	footerMessageCssClass: 'market-rates-footer',
  	tableBidAskCssClass: 'market-rates-bid-ask',
  	ratesList: [
        { instrumentName: 'EURUSD', displayDecimalPrecision: 4 },
        { instrumentName: 'GBPUSD', displayDecimalPrecision: 4 },
        { instrumentName: 'USDJPY', displayDecimalPrecision: 4 },
        { instrumentName: 'USDCHF', displayDecimalPrecision: 4 },
        { instrumentName: 'AUDUSD', displayDecimalPrecision: 4}]
  };

	/*
	* main market status object 
	* @param input - curent input dom container
	* @param options  - custom user options to override defualts options
	*/
	MarketRates = function(input, options) {
		//private data members
		var base,
        $input,
        config,
        $tableContainer,
        crossesList;

		/*
		* build table header and append it to input container
		*/
		var buildTable = function() {

			var html = '<tr class="' + config.tableHeaderCssClass + '">' +
                    '<td class="' + config.tableInstrumentCssClass + '">' + config.symbolText + '</td>' +
                    '<td>' + config.statusText + '</td>' +
                    '<td class="' + config.tableBidAskCssClass + '">' + config.bidText + '</td>' +
                    '<td class="' + config.tableBidAskCssClass + '">' + config.askText + '</td>' +
                  '</tr>';

			$tableContainer = $("<table>").attr("cellpadding", 0).attr("cellspacing", 0)
                                    .addClass(config.tableCssClass).append(html)


      var crossesNameArray = new Array();
			$.each(config.ratesList, function() 
			{
			  crossesNameArray.push(this.instrumentName);
			  	
				//create single row html with row data values      
				var html = '<td class="' + config.tableInstrumentCssClass + '">' + this.instrumentName + '</td>' +
                   '<td class="' + config.marketStatusUpClass + '"></td>' +
                   '<td>-</td>' +
                   '<td>-</td>'

				//append the row to table container
				$("<tr>").attr('id', config.rowIdPrefix + this.instrumentName)
                 .append(html)
                 .data('InstrumentData', this)
                 .appendTo($tableContainer);
			});

			$tableContainer.appendTo($input);

			$("<div>").addClass(config.footerMessageCssClass)
								.append('Market Data is delayed at least 10 seconds')
                .appendTo($input);

			$("<div>").addClass(config.marketLogoCssClass)
                .appendTo($input);
      
      crossesList = crossesNameArray 
		}

		/*
		* hnadle single row update if the row dose not exsist will create it else
		* we will updte the values accordig to the new json
		* @param rowdata - single row json data
		*/
		var handleRowUpdate = function(rowData,bidRateStatus,askRateStatus) {
			//get the row according to config row prefix and instrument
			var row = $("#" + config.rowIdPrefix + rowData.InstrumentName);
			var marketStatusDown;

			//if the row exsit update market status and bid and ask values
			if (row.length > 0) {

				var instrumentData = row.data('InstrumentData');

				//var oldDisplayBid = Number(row.find('td').eq(2).html()).toFixed(instrumentData.displayDecimalPrecision);
				var newDisplayBid = Number(rowData.BidRate).toFixed(instrumentData.displayDecimalPrecision);
				var newDisplayAsk = Number(rowData.AskRate).toFixed(instrumentData.displayDecimalPrecision);

				var rowEditor =  row.find('td').eq(1);
			
				if (bidRateStatus !== config.engine.marketRateStatus.noChange) 
				{
					//cals market status (up or down)
				  marketStatusDown = (bidRateStatus === config.engine.marketRateStatus.down);
				  
				  rowEditor.toggleClass(config.marketStatusDownClass, marketStatusDown)
                   .toggleClass(config.marketStatusUpClass, !marketStatusDown)
				}

				// Update market status class and bid and ask values
				rowEditor.next().html(newDisplayBid)
				         .next().html(newDisplayAsk);
			}
		}
		
		var handleInit = function(data)
		{
		  $input.find(".market-rates-logo").html(data.LogoHtml)
		}

		var init = function() {
			// To avoid scope issues, use 'base' instead of 'this'
			base = this;

			//get current input element as jquery object
			$input = $(input);

			// Add a reverse reference to the DOM object
			$input.data("MarketRates", base);

			// Extend config with defults and options passed from the user 
			config = $.extend({}, defaults, options);
     
      if(config.engine == null)
      {
        alert('Error Market Rates Data Engine not defined')
        
        return ;
      }
      
      // Clear the initial content of the specified container
      $input.empty();
      
			//append to container the table header
			buildTable();

			config.engine.addRatesList(crossesList);
			config.engine.addCallback(handleRowUpdate);
			config.engine.addInitCallback(handleInit);
			
			config.engine.start();
			
		}

		//call init function after the instanse objetc created
		init();

	}

	/*
	* main markets rates jquery plugin function
	* @param options - custom options object to override defaults objetc
	*/
	$.fn.marketRates = function(options) {
		//loop over each selected dom elelemt and create new market status for them
		return this.each(function() {
			//create new instanse of market rates control
			var marketRatesInstance = new MarketRates(this, options);
		});
	};

})(jQuery);