vcs.maemo.org Git - marketstoday/blob - src/qml/Library/js/CoreLogic.js

   1 /*
   2 @version: 0.1
   3 @author: Sudheer K. <scifi1947 at gmail.com>
   4 @license: GNU General Public License
   5 */
   6
   7 function getQuery(){
   8     var query;
   9     var symbolsArray = DBUtility.getAllSymbols();
  10     if (symbolsArray && symbolsArray.length > 0){
  11         var i = 0;
  12         for (i = 0; i< symbolsArray.length; i++) {
  13             logUtility.logMessage("Appending "+symbolsArray[i]+ " to Query");
  14
  15             if (!query){
  16                 query = '"'+symbolsArray[i]+'"';
  17             }
  18             else{
  19                 query = query + ',"' + symbolsArray[i]+'"';
  20             }
  21         }
  22     }
  23
  24     return query;
  25 }
  26
  27 function refreshDataModel(responseXML){
  28     if (!(responseXML && stockQuoteDataModel)) return;
  29
  30     var xmlDoc = responseXML.documentElement;
  31     var results = xmlDoc.firstChild;
  32
  33     //Not the best code I ever wrote, but got no choice
  34     //Refer to Memory leak issue with XMLListModel --> http://bugreports.qt.nokia.com/browse/QTBUG-15191
  35
  36     if (results) {
  37         var quoteNodes = results.childNodes;
  38         if (quoteNodes){
  39             logUtility.logMessage("Clearing Data Model");
  40             stockQuoteDataModel.clear();
  41
  42             var i = 0;
  43             for (i = 0; i < quoteNodes.length; i++) {
  44
  45                 var quoteElements = quoteNodes[i].childNodes;
  46                 var j = 0;
  47                 var symbol,stockName,lastTradedPrice,change,changePercentage
  48
  49                 for (j = 0; j < quoteElements.length; j++){
  50
  51                     switch (quoteElements[j].nodeName){
  52                         case 'Symbol':
  53                             symbol = quoteElements[j].childNodes[0].nodeValue;
  54                             break;
  55                         case 'Name':
  56                             stockName = quoteElements[j].childNodes[0].nodeValue;
  57                             break;
  58                         case 'LastTradePriceOnly':
  59                             lastTradedPrice = quoteElements[j].childNodes[0].nodeValue;
  60                             break;
  61                         case 'Change':
  62                             change = quoteElements[j].childNodes[0].nodeValue;
  63                             break;
  64                         case 'ChangeinPercent':
  65                             changePercentage = quoteElements[j].childNodes[0].nodeValue;
  66                             break;
  67                         default:
  68                     }
  69                 }
  70                 stockQuoteDataModel.append({"symbol":symbol,"stockName":stockName,"lastTradedPrice":lastTradedPrice,"change":change,"changePercentage":changePercentage});
  71                 logUtility.logMessage("Symbol: "+stockQuoteDataModel.get(i).symbol+", Name: "+ stockQuoteDataModel.get(i).stockName+", LastTraded: "+stockQuoteDataModel.get(i).lastTradedPrice+", Change: "+stockQuoteDataModel.get(i).change+", ChangePercent: "+stockQuoteDataModel.get(i).changePercentage);
  72             }
  73         }
  74     }
  75
  76     var queryNode = xmlDoc;
  77     if (queryNode) {
  78         var i = 0;
  79         var queryAttributes = queryNode.attributes;
  80         for (i = 0; i < queryAttributes.length; i++) {
  81             if (queryAttributes[i].name == 'created') {
  82                 screen.lastUpdatedTimeStamp = "Updated: "+DateLib.ISODate.format(queryAttributes[i].value);
  83                 logUtility.logMessage(screen.lastUpdatedTimeStamp);
  84                 break;
  85             }
  86         }
  87     }
  88 }
  89
  90
  91 function reloadQuotes(){
  92     var query = getQuery();
  93     if (query){
  94         screen.quoteRefreshStarted();
  95         logUtility.logMessage("Reloading Data..");
  96
  97         //var queryURL = 'http://query.yahooapis.com/v1/public/yql?q=select * from yahoo.finance.quotes where symbol in ("INDU","^IXIC","^GSPC","CLJ11.NYM","YHOO","AAPL","GOOG","MSFT")&env=store://datatables.org/alltableswithkeys';
  98         var queryURL = 'http://query.yahooapis.com/v1/public/yql?q=select Symbol,Name,LastTradePriceOnly,Change,ChangeinPercent from yahoo.finance.quotes where symbol in ('+query+')&env=store://datatables.org/alltableswithkeys';
  99         logUtility.logMessage(queryURL);
 100
 101         var response = new XMLHttpRequest();
 102         response.onreadystatechange = function() {
 103             if (response.readyState == XMLHttpRequest.DONE) {
 104                 refreshDataModel(response.responseXML);
 105                 logUtility.logMessage("Data Reload Completed..");
 106                 screen.quoteRefreshCompleted();
 107             }
 108         }
 109
 110         response.open("GET", queryURL);
 111         response.send();
 112     }
 113     else{
 114         logUtility.logMessage("No stock symbols found in configuration.");
 115     }
 116 }
 117
 118 function loadSettings(){
 119     var value;
 120     value  = DBUtility.getSetting("UpdateFreqency");
 121     if (!value || value == "0.0" || value === ""){
 122         autoUpdateInterval = 0;
 123     }
 124     else{
 125         autoUpdateInterval = parseInt(value)*60*1000; //Convert minutes to milliseconds
 126     }
 127     value  = DBUtility.getSetting("UpdateWeekdaysOnly");
 128     if (!value || value == "0.0" || value === ""){
 129         updateWeekDaysOnly = false;
 130     }
 131     else{
 132         updateWeekDaysOnly = true;
 133     }
 134
 135     value  = DBUtility.getSetting("UpdateOnSavedNetworksOnly");
 136     if (!value || value == "0.0" || value === ""){
 137         updateOnSavedNetworksOnly = false;
 138     }
 139     else{
 140         updateOnSavedNetworksOnly = true;
 141     }
 142
 143 }
 144
 145 function initialize(){
 146     if (autoUpdateTimer.running) autoUpdateTimer.stop();
 147     loadSettings();
 148     reloadQuotes();
 149
 150     if (autoUpdateInterval !== 0) {
 151         logUtility.logMessage("Starting Timer..");
 152         autoUpdateTimer.start();
 153     }
 154 }