1 | /** |
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2 | * jqPlot |
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3 | * Pure JavaScript plotting plugin using jQuery |
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4 | * |
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5 | * Version: @VERSION |
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6 | * |
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7 | * Copyright (c) 2009-2011 Chris Leonello |
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8 | * jqPlot is currently available for use in all personal or commercial projects |
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9 | * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL |
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10 | * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can |
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11 | * choose the license that best suits your project and use it accordingly. |
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12 | * |
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13 | * Although not required, the author would appreciate an email letting him |
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14 | * know of any substantial use of jqPlot. You can reach the author at: |
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15 | * chris at jqplot dot com or see http://www.jqplot.com/info.php . |
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16 | * |
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17 | * If you are feeling kind and generous, consider supporting the project by |
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18 | * making a donation at: http://www.jqplot.com/donate.php . |
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19 | * |
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20 | * sprintf functions contained in jqplot.sprintf.js by Ash Searle: |
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21 | * |
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22 | * version 2007.04.27 |
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23 | * author Ash Searle |
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24 | * http://hexmen.com/blog/2007/03/printf-sprintf/ |
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25 | * http://hexmen.com/js/sprintf.js |
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26 | * The author (Ash Searle) has placed this code in the public domain: |
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27 | * "This code is unrestricted: you are free to use it however you like." |
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28 | * |
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29 | */ |
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30 | (function($) { |
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31 | /** |
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32 | * Class: $.jqplot.ciParser |
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33 | * Data Renderer function which converts a custom JSON data object into jqPlot data format. |
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34 | * Set this as a callable on the jqplot dataRenderer plot option: |
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35 | * |
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36 | * > plot = $.jqplot('mychart', [data], { dataRenderer: $.jqplot.ciParser, ... }); |
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37 | * |
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38 | * Where data is an object in JSON format or a JSON encoded string conforming to the |
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39 | * City Index API spec. |
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40 | * |
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41 | * Note that calling the renderer function is handled internally by jqPlot. The |
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42 | * user does not have to call the function. The parameters described below will |
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43 | * automatically be passed to the ciParser function. |
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44 | * |
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45 | * Parameters: |
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46 | * data - JSON encoded string or object. |
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47 | * plot - reference to jqPlot Plot object. |
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48 | * |
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49 | * Returns: |
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50 | * data array in jqPlot format. |
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51 | * |
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52 | */ |
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53 | $.jqplot.ciParser = function (data, plot) { |
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54 | var ret = [], |
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55 | line, |
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56 | temp, |
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57 | i, j, k, kk; |
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58 | |
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59 | if (typeof(data) == "string") { |
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60 | data = $.jqplot.JSON.parse(data, handleStrings); |
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61 | } |
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62 | |
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63 | else if (typeof(data) == "object") { |
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64 | for (k in data) { |
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65 | for (i=0; i<data[k].length; i++) { |
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66 | for (kk in data[k][i]) { |
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67 | data[k][i][kk] = handleStrings(kk, data[k][i][kk]); |
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68 | } |
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69 | } |
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70 | } |
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71 | } |
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72 | |
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73 | else { |
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74 | return null; |
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75 | } |
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76 | |
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77 | // function handleStrings |
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78 | // Checks any JSON encoded strings to see if they are |
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79 | // encoded dates. If so, pull out the timestamp. |
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80 | // Expects dates to be represented by js timestamps. |
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81 | |
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82 | function handleStrings(key, value) { |
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83 | var a; |
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84 | if (value != null) { |
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85 | if (value.toString().indexOf('Date') >= 0) { |
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86 | //here we will try to extract the ticks from the Date string in the "value" fields of JSON returned data |
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87 | a = /^\/Date\((-?[0-9]+)\)\/$/.exec(value); |
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88 | if (a) { |
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89 | return parseInt(a[1], 10); |
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90 | } |
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91 | } |
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92 | return value; |
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93 | } |
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94 | } |
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95 | |
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96 | for (var prop in data) { |
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97 | line = []; |
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98 | temp = data[prop]; |
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99 | switch (prop) { |
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100 | case "PriceTicks": |
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101 | for (i=0; i<temp.length; i++) { |
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102 | line.push([temp[i]['TickDate'], temp[i]['Price']]); |
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103 | } |
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104 | break; |
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105 | case "PriceBars": |
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106 | for (i=0; i<temp.length; i++) { |
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107 | line.push([temp[i]['BarDate'], temp[i]['Open'], temp[i]['High'], temp[i]['Low'], temp[i]['Close']]); |
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108 | } |
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109 | break; |
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110 | } |
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111 | ret.push(line); |
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112 | } |
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113 | return ret; |
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114 | }; |
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115 | })(jQuery); |
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