Mercurial > hg > extraction-interface

annotate geotemco/lib/flot/jquery.flot.tooltip.js @ 44:3163d8ca0b62 default

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closing default branch, we use extractapp branch
author Zoe Hong <zhong@mpiwg-berlin.mpg.de>
date Fri, 13 Mar 2015 09:55:07 +0100
parents b12c99b7c3f0
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1 /*
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2 * jquery.flot.tooltip
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3 *
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4 * description: easy-to-use tooltips for Flot charts
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5 * version: 0.6.7
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6 * author: Krzysztof Urbas @krzysu [myviews.pl]
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7 * website: https://github.com/krzysu/flot.tooltip
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8 *
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9 * build on 2014-03-26
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10 * released under MIT License, 2012
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11 */
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12 // IE8 polyfill for Array.indexOf
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13 if (!Array.prototype.indexOf) {
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14 Array.prototype.indexOf = function (searchElement, fromIndex) {
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15 if ( this === undefined || this === null ) {
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16 throw new TypeError( '"this" is null or not defined' );
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17 }
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18 var length = this.length >>> 0; // Hack to convert object.length to a UInt32
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19 fromIndex = +fromIndex || 0;
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20 if (Math.abs(fromIndex) === Infinity) {
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21 fromIndex = 0;
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22 }
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23 if (fromIndex < 0) {
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24 fromIndex += length;
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25 if (fromIndex < 0) {
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26 fromIndex = 0;
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27 }
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28 }
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29
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30 for (;fromIndex < length; fromIndex++) {
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31 if (this[fromIndex] === searchElement) {
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32 return fromIndex;
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33 }
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34 }
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35
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36 return -1;
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37 };
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38 }
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39
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40 (function ($) {
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41
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42 // plugin options, default values
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43 var defaultOptions = {
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44 tooltip: false,
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45 tooltipOpts: {
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46 content: "%s | X: %x | Y: %y",
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47 // allowed templates are:
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48 // %s -> series label,
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49 // %lx -> x axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels),
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50 // %ly -> y axis label (requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels),
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51 // %x -> X value,
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52 // %y -> Y value,
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53 // %x.2 -> precision of X value,
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54 // %p -> percent
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55 xDateFormat: null,
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56 yDateFormat: null,
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57 monthNames: null,
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58 dayNames: null,
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59 shifts: {
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60 x: 10,
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61 y: 20
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62 },
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63 defaultTheme: true,
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64
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65 // callbacks
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66 onHover: function(flotItem, $tooltipEl) {}
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67 }
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68 };
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69
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70 // object
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71 var FlotTooltip = function(plot) {
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72
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73 // variables
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74 this.tipPosition = {x: 0, y: 0};
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75
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76 this.init(plot);
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77 };
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78
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79 // main plugin function
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80 FlotTooltip.prototype.init = function(plot) {
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81
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82 var that = this;
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83
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84 // detect other flot plugins
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85 var plotPluginsLength = $.plot.plugins.length;
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86 this.plotPlugins = [];
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87
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88 if (plotPluginsLength) {
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89 for (var p = 0; p < plotPluginsLength; p++) {
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90 this.plotPlugins.push($.plot.plugins[p].name);
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91 }
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92 }
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93
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94 plot.hooks.bindEvents.push(function (plot, eventHolder) {
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95
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96 // get plot options
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97 that.plotOptions = plot.getOptions();
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98
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99 // if not enabled return
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100 if (that.plotOptions.tooltip === false || typeof that.plotOptions.tooltip === 'undefined') return;
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101
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102 // shortcut to access tooltip options
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103 that.tooltipOptions = that.plotOptions.tooltipOpts;
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104
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105 // create tooltip DOM element
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106 var $tip = that.getDomElement();
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107
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108 // bind event
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109 $( plot.getPlaceholder() ).bind("plothover", plothover);
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110
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111 $(eventHolder).bind('mousemove', mouseMove);
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112 });
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113
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114 plot.hooks.shutdown.push(function (plot, eventHolder){
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115 $(plot.getPlaceholder()).unbind("plothover", plothover);
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116 $(eventHolder).unbind("mousemove", mouseMove);
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117 });
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118
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119 function mouseMove(e){
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120 var pos = {};
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121 pos.x = e.pageX;
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122 pos.y = e.pageY;
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123 that.updateTooltipPosition(pos);
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124 }
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125
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126 function plothover(event, pos, item) {
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127 var $tip = that.getDomElement();
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128 if (item) {
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129 var tipText;
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130
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131 // convert tooltip content template to real tipText
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132 tipText = that.stringFormat(that.tooltipOptions.content, item);
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133
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134 $tip.html( tipText );
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135 that.updateTooltipPosition({ x: pos.pageX, y: pos.pageY });
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136 $tip.css({
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137 left: that.tipPosition.x + that.tooltipOptions.shifts.x,
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138 top: that.tipPosition.y + that.tooltipOptions.shifts.y
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139 })
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140 .show();
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141
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142 // run callback
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143 if(typeof that.tooltipOptions.onHover === 'function') {
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144 that.tooltipOptions.onHover(item, $tip);
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145 }
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146 }
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147 else {
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148 $tip.hide().html('');
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149 }
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150 }
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151 };
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152
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153 /**
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154 * get or create tooltip DOM element
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155 * @return jQuery object
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156 */
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157 FlotTooltip.prototype.getDomElement = function() {
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158 var $tip;
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159
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160 if( $('#flotTip').length > 0 ){
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161 $tip = $('#flotTip');
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162 }
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163 else {
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164 $tip = $('<div />').attr('id', 'flotTip');
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165 $tip.appendTo('body').hide().css({position: 'absolute'});
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166
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167 if(this.tooltipOptions.defaultTheme) {
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168 $tip.css({
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169 'background': '#fff',
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170 'z-index': '1040',
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171 'padding': '0.4em 0.6em',
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172 'border-radius': '0.5em',
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173 'font-size': '0.8em',
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174 'border': '1px solid #111',
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175 'display': 'none',
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176 'white-space': 'nowrap'
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177 });
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178 }
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179 }
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180
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181 return $tip;
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182 };
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183
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184 // as the name says
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185 FlotTooltip.prototype.updateTooltipPosition = function(pos) {
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186 var totalTipWidth = $("#flotTip").outerWidth() + this.tooltipOptions.shifts.x;
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187 var totalTipHeight = $("#flotTip").outerHeight() + this.tooltipOptions.shifts.y;
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188 if ((pos.x - $(window).scrollLeft()) > ($(window).innerWidth() - totalTipWidth)) {
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189 pos.x -= totalTipWidth;
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190 }
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191 if ((pos.y - $(window).scrollTop()) > ($(window).innerHeight() - totalTipHeight)) {
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192 pos.y -= totalTipHeight;
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193 }
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194 this.tipPosition.x = pos.x;
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195 this.tipPosition.y = pos.y;
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196 };
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197
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198 /**
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199 * core function, create tooltip content
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200 * @param {string} content - template with tooltip content
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201 * @param {object} item - Flot item
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202 * @return {string} real tooltip content for current item
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203 */
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204 FlotTooltip.prototype.stringFormat = function(content, item) {
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205
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206 var percentPattern = /%p\.{0,1}(\d{0,})/;
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207 var seriesPattern = /%s/;
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208 var xLabelPattern = /%lx/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded
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209 var yLabelPattern = /%ly/; // requires flot-axislabels plugin https://github.com/markrcote/flot-axislabels, will be ignored if plugin isn't loaded
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210 var xPattern = /%x\.{0,1}(\d{0,})/;
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211 var yPattern = /%y\.{0,1}(\d{0,})/;
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212 var xPatternWithoutPrecision = "%x";
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213 var yPatternWithoutPrecision = "%y";
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214
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215 var x, y;
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216
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217 // for threshold plugin we need to read data from different place
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218 if (typeof item.series.threshold !== "undefined") {
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219 x = item.datapoint[0];
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220 y = item.datapoint[1];
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221 } else {
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222 x = item.series.data[item.dataIndex][0];
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223 y = item.series.data[item.dataIndex][1];
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224 }
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225
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226 // I think this is only in case of threshold plugin
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227 if (item.series.label === null && item.series.originSeries) {
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228 item.series.label = item.series.originSeries.label;
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229 }
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230
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231 // if it is a function callback get the content string
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232 if( typeof(content) === 'function' ) {
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233 content = content(item.series.label, x, y, item);
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234 }
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235
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236 // percent match for pie charts
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237 if( typeof (item.series.percent) !== 'undefined' ) {
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238 content = this.adjustValPrecision(percentPattern, content, item.series.percent);
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239 }
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240
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241 // series match
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242 if( typeof(item.series.label) !== 'undefined' ) {
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243 content = content.replace(seriesPattern, item.series.label);
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244 }
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245 else {
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246 //remove %s if label is undefined
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247 content = content.replace(seriesPattern, "");
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248 }
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249
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250 // x axis label match
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251 if( this.hasAxisLabel('xaxis', item) ) {
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252 content = content.replace(xLabelPattern, item.series.xaxis.options.axisLabel);
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253 }
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254 else {
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255 //remove %lx if axis label is undefined or axislabels plugin not present
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256 content = content.replace(xLabelPattern, "");
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257 }
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258
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259 // y axis label match
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260 if( this.hasAxisLabel('yaxis', item) ) {
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261 content = content.replace(yLabelPattern, item.series.yaxis.options.axisLabel);
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262 }
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263 else {
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264 //remove %ly if axis label is undefined or axislabels plugin not present
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265 content = content.replace(yLabelPattern, "");
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266 }
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267
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268 // time mode axes with custom dateFormat
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269 if(this.isTimeMode('xaxis', item) && this.isXDateFormat(item)) {
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270 content = content.replace(xPattern, this.timestampToDate(x, this.tooltipOptions.xDateFormat));
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271 }
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272
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273 if(this.isTimeMode('yaxis', item) && this.isYDateFormat(item)) {
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274 content = content.replace(yPattern, this.timestampToDate(y, this.tooltipOptions.yDateFormat));
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275 }
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276
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277 // set precision if defined
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278 if(typeof x === 'number') {
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279 content = this.adjustValPrecision(xPattern, content, x);
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280 }
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281 if(typeof y === 'number') {
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282 content = this.adjustValPrecision(yPattern, content, y);
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283 }
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284
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285 // change x from number to given label, if given
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286 if(typeof item.series.xaxis.ticks !== 'undefined') {
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287
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288 var ticks;
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289 if(this.hasRotatedXAxisTicks(item)) {
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290 // xaxis.ticks will be an empty array if tickRotor is being used, but the values are available in rotatedTicks
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291 ticks = 'rotatedTicks';
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292 }
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293 else {
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294 ticks = 'ticks';
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295 }
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296
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297 // see https://github.com/krzysu/flot.tooltip/issues/65
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298 var tickIndex = item.dataIndex + item.seriesIndex;
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299
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300 if(item.series.xaxis[ticks].length > tickIndex && !this.isTimeMode('xaxis', item))
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301 content = content.replace(xPattern, item.series.xaxis[ticks][tickIndex].label);
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302 }
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303
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304 // change y from number to given label, if given
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305 if(typeof item.series.yaxis.ticks !== 'undefined') {
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306 for (var index in item.series.yaxis.ticks) {
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307 if (item.series.yaxis.ticks.hasOwnProperty(index)) {
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308 var value = (this.isCategoriesMode('yaxis', item)) ? item.series.yaxis.ticks[index].label : item.series.yaxis.ticks[index].v;
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309 if (value === y) {
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310 content = content.replace(yPattern, item.series.yaxis.ticks[index].label);
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311 }
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312 }
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313 }
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314 }
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315
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316 // if no value customization, use tickFormatter by default
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317 if(typeof item.series.xaxis.tickFormatter !== 'undefined') {
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318 //escape dollar
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319 content = content.replace(xPatternWithoutPrecision, item.series.xaxis.tickFormatter(x, item.series.xaxis).replace(/\$/g, '$$'));
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320 }
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321 if(typeof item.series.yaxis.tickFormatter !== 'undefined') {
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322 //escape dollar
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323 content = content.replace(yPatternWithoutPrecision, item.series.yaxis.tickFormatter(y, item.series.yaxis).replace(/\$/g, '$$'));
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324 }
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325
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326 return content;
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327 };
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328
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329 // helpers just for readability
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330 FlotTooltip.prototype.isTimeMode = function(axisName, item) {
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331 return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'time');
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332 };
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333
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334 FlotTooltip.prototype.isXDateFormat = function(item) {
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335 return (typeof this.tooltipOptions.xDateFormat !== 'undefined' && this.tooltipOptions.xDateFormat !== null);
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336 };
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337
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338 FlotTooltip.prototype.isYDateFormat = function(item) {
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339 return (typeof this.tooltipOptions.yDateFormat !== 'undefined' && this.tooltipOptions.yDateFormat !== null);
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340 };
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341
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342 FlotTooltip.prototype.isCategoriesMode = function(axisName, item) {
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343 return (typeof item.series[axisName].options.mode !== 'undefined' && item.series[axisName].options.mode === 'categories');
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344 };
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345
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346 //
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347 FlotTooltip.prototype.timestampToDate = function(tmst, dateFormat) {
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348 var theDate = new Date(tmst*1);
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349 return $.plot.formatDate(theDate, dateFormat, this.tooltipOptions.monthNames, this.tooltipOptions.dayNames);
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350 };
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351
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352 //
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353 FlotTooltip.prototype.adjustValPrecision = function(pattern, content, value) {
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354
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355 var precision;
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356 var matchResult = content.match(pattern);
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357 if( matchResult !== null ) {
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358 if(RegExp.$1 !== '') {
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359 precision = RegExp.$1;
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360 value = value.toFixed(precision);
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361
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362 // only replace content if precision exists, in other case use thickformater
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363 content = content.replace(pattern, value);
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364 }
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365 }
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366 return content;
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367 };
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368
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369 // other plugins detection below
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370
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371 // check if flot-axislabels plugin (https://github.com/markrcote/flot-axislabels) is used and that an axis label is given
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372 FlotTooltip.prototype.hasAxisLabel = function(axisName, item) {
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373 return (this.plotPlugins.indexOf('axisLabels') !== -1 && typeof item.series[axisName].options.axisLabel !== 'undefined' && item.series[axisName].options.axisLabel.length > 0);
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374 };
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375
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376 // check whether flot-tickRotor, a plugin which allows rotation of X-axis ticks, is being used
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377 FlotTooltip.prototype.hasRotatedXAxisTicks = function(item) {
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378 return ($.grep($.plot.plugins, function(p){ return p.name === "tickRotor"; }).length === 1 && typeof item.series.xaxis.rotatedTicks !== 'undefined');
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379 };
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380
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381 //
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382 var init = function(plot) {
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383 new FlotTooltip(plot);
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384 };
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385
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386 // define Flot plugin
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387 $.plot.plugins.push({
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388 init: init,
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389 options: defaultOptions,
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390 name: 'tooltip',
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391 version: '0.6.7'
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392 });
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393
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394 })(jQuery);