Mercurial > hg > extraction-interface

annotate geotemco/lib/simile/timeplot/scripts/plot.js @ 27:4a29bccb6c59

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modify the SmartRegexSave method to prevent duplicated records in topic_regex_relation table and provide better promting to user to force saving regex file or not
author Zoe Hong <zhong@mpiwg-berlin.mpg.de>
date Tue, 03 Mar 2015 11:47:41 +0100
parents b12c99b7c3f0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /**
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2 * Plot Layer
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3 *
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4 * @fileOverview Plot Layer
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5 * @name Plot
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6 */
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7
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8 /**
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9 * A plot layer is the main building block for timeplots and it's the object
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10 * that is responsible for painting the plot itself. Each plot needs to have
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11 * a time geometry, either a DataSource (for time series
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12 * plots) or an EventSource (for event plots) and a value geometry in case
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13 * of time series plots. Such parameters are passed along
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14 * in the 'plotInfo' map.
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15 *
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16 * @constructor
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17 */
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18 Timeplot.Plot = function(timeplot, plotInfo) {
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19 this._timeplot = timeplot;
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20 this._canvas = timeplot.getCanvas();
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21 this._plotInfo = plotInfo;
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22 this._id = plotInfo.id;
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23 this._timeGeometry = plotInfo.timeGeometry;
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24 this._valueGeometry = plotInfo.valueGeometry;
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25 this._theme = new Timeline.getDefaultTheme();
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26 this._dataSource = plotInfo.dataSource;
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27 this._eventSource = plotInfo.eventSource;
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28 this._bubble = null;
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29 };
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30
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31 Timeplot.Plot.prototype = {
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32
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33 /**
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34 * Initialize the plot layer
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35 */
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36 initialize: function() {
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37 if (this._dataSource && this._dataSource.getValue) {
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38 this._timeFlag = this._timeplot.putDiv("timeflag","timeplot-timeflag");
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39 this._valueFlag = this._timeplot.putDiv(this._id + "valueflag","timeplot-valueflag");
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40 this._valueFlagLineLeft = this._timeplot.putDiv(this._id + "valueflagLineLeft","timeplot-valueflag-line");
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41 this._valueFlagLineRight = this._timeplot.putDiv(this._id + "valueflagLineRight","timeplot-valueflag-line");
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42 if (!this._valueFlagLineLeft.firstChild) {
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43 this._valueFlagLineLeft.appendChild(SimileAjax.Graphics.createTranslucentImage(Timeplot.urlPrefix + "images/line_left.png"));
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44 this._valueFlagLineRight.appendChild(SimileAjax.Graphics.createTranslucentImage(Timeplot.urlPrefix + "images/line_right.png"));
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45 }
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46 this._valueFlagPole = this._timeplot.putDiv(this._id + "valuepole","timeplot-valueflag-pole");
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47
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48 var opacity = this._plotInfo.valuesOpacity;
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49
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50 SimileAjax.Graphics.setOpacity(this._timeFlag, opacity);
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51 SimileAjax.Graphics.setOpacity(this._valueFlag, opacity);
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52 SimileAjax.Graphics.setOpacity(this._valueFlagLineLeft, opacity);
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53 SimileAjax.Graphics.setOpacity(this._valueFlagLineRight, opacity);
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54 SimileAjax.Graphics.setOpacity(this._valueFlagPole, opacity);
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55
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56 var plot = this;
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57
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58 var mouseOverHandler = function(elmt, evt, target) {
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59 if (plot._plotInfo.showValues) {
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60 plot._valueFlag.style.display = "block";
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61 mouseMoveHandler(elmt, evt, target);
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62 }
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63 }
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64
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65 var day = 24 * 60 * 60 * 1000;
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66 var month = 30 * day;
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67
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68 var mouseMoveHandler = function(elmt, evt, target) {
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69 if (typeof SimileAjax != "undefined" && plot._plotInfo.showValues) {
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70 var c = plot._canvas;
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71 var x = Math.round(SimileAjax.DOM.getEventRelativeCoordinates(evt,plot._canvas).x);
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72 if (x > c.width) x = c.width;
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73 if (isNaN(x) || x < 0) x = 0;
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74 var t = plot._timeGeometry.fromScreen(x);
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75 if (t == 0 || plot._dataSource == null) { // something is wrong; IE is the only one that claims _dataSource is ever null, and only after items have changed
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76 plot._valueFlag.style.display = "none";
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77 return;
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78 }
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79
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80 var validTime = plot._dataSource.getClosestValidTime(t);
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81 x = plot._timeGeometry.toScreen(validTime);
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82 var v = plot._dataSource.getValue(validTime);
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83 if (plot._plotInfo.roundValues) v = Math.round(v);
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84 plot._valueFlag.innerHTML = new String(v);
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85 var d = new Date(validTime);
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86 var p = plot._timeGeometry.getPeriod();
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87 if (p < day) {
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88 plot._timeFlag.innerHTML = d.toLocaleTimeString();
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89 } else if (p > month) {
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90 plot._timeFlag.innerHTML = d.toLocaleDateString();
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91 } else {
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92 plot._timeFlag.innerHTML = d.toLocaleString();
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93 }
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94
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95 var tw = plot._timeFlag.clientWidth;
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96 var th = plot._timeFlag.clientHeight;
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97 var tdw = Math.round(tw / 2);
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98 var vw = plot._valueFlag.clientWidth;
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99 var vh = plot._valueFlag.clientHeight;
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100 var y = plot._valueGeometry.toScreen(v);
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101
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102 if (x + tdw > c.width) {
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103 var tx = c.width - tdw;
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104 } else if (x - tdw < 0) {
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105 var tx = tdw;
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106 } else {
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107 var tx = x;
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108 }
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109
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110 if (plot._timeGeometry._timeValuePosition == "top") {
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111 plot._timeplot.placeDiv(plot._valueFlagPole, {
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112 left: x,
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113 top: th - 5,
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114 height: c.height - y - th + 6,
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115 display: "block"
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116 });
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117 plot._timeplot.placeDiv(plot._timeFlag,{
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118 left: tx - tdw,
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119 top: -6,
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120 display: "block"
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121 });
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122 } else {
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123 plot._timeplot.placeDiv(plot._valueFlagPole, {
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124 left: x,
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125 bottom: th - 5,
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126 height: y - th + 6,
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127 display: "block"
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128 });
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129 plot._timeplot.placeDiv(plot._timeFlag,{
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130 left: tx - tdw,
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131 bottom: -6,
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132 display: "block"
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133 });
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134 }
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135
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136 if (x + vw + 14 > c.width && y + vh + 4 > c.height) {
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137 plot._valueFlagLineLeft.style.display = "none";
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138 plot._timeplot.placeDiv(plot._valueFlagLineRight,{
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139 left: x - 14,
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140 bottom: y - 14,
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141 display: "block"
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142 });
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143 plot._timeplot.placeDiv(plot._valueFlag,{
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144 left: x - vw - 13,
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145 bottom: y - vh - 13,
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146 display: "block"
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147 });
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148 } else if (x + vw + 14 > c.width && y + vh + 4 < c.height) {
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149 plot._valueFlagLineRight.style.display = "none";
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150 plot._timeplot.placeDiv(plot._valueFlagLineLeft,{
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151 left: x - 14,
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152 bottom: y,
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153 display: "block"
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154 });
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155 plot._timeplot.placeDiv(plot._valueFlag,{
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156 left: x - vw - 13,
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157 bottom: y + 13,
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158 display: "block"
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159 });
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160 } else if (x + vw + 14 < c.width && y + vh + 4 > c.height) {
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161 plot._valueFlagLineRight.style.display = "none";
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162 plot._timeplot.placeDiv(plot._valueFlagLineLeft,{
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163 left: x,
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164 bottom: y - 13,
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165 display: "block"
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166 });
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167 plot._timeplot.placeDiv(plot._valueFlag,{
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168 left: x + 13,
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169 bottom: y - 13,
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170 display: "block"
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171 });
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172 } else {
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173 plot._valueFlagLineLeft.style.display = "none";
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174 plot._timeplot.placeDiv(plot._valueFlagLineRight,{
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175 left: x,
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176 bottom: y,
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177 display: "block"
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178 });
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179 plot._timeplot.placeDiv(plot._valueFlag,{
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180 left: x + 13,
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181 bottom: y + 13,
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182 display: "block"
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183 });
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184 }
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185 }
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186 }
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187
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188 var timeplotElement = this._timeplot.getElement();
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189 SimileAjax.DOM.registerEvent(timeplotElement, "mouseover", mouseOverHandler);
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190 SimileAjax.DOM.registerEvent(timeplotElement, "mousemove", mouseMoveHandler);
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191 }
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192 },
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193
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194 /**
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195 * Dispose the plot layer and all the data sources and listeners associated to it
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196 */
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197 dispose: function() {
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198 if (this._dataSource) {
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199 this._dataSource.removeListener(this._paintingListener);
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200 this._paintingListener = null;
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201 this._dataSource.dispose();
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202 this._dataSource = null;
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203 }
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204 },
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205
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206 /**
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207 * Hide the values
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208 */
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209 hideValues: function() {
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210 if (this._valueFlag) this._valueFlag.style.display = "none";
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211 if (this._timeFlag) this._timeFlag.style.display = "none";
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212 if (this._valueFlagLineLeft) this._valueFlagLineLeft.style.display = "none";
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213 if (this._valueFlagLineRight) this._valueFlagLineRight.style.display = "none";
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214 if (this._valueFlagPole) this._valueFlagPole.style.display = "none";
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215 },
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216
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217 /**
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218 * Return the data source of this plot layer (it could be either a DataSource or an EventSource)
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219 */
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220 getDataSource: function() {
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221 return (this._dataSource) ? this._dataSource : this._eventSource;
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222 },
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223
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224 /**
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225 * Return the time geometry associated with this plot layer
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226 */
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227 getTimeGeometry: function() {
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228 return this._timeGeometry;
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229 },
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230
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231 /**
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232 * Return the value geometry associated with this plot layer
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233 */
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234 getValueGeometry: function() {
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235 return this._valueGeometry;
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236 },
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237
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238 /**
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239 * Paint this plot layer
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240 */
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241 paint: function() {
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242 var ctx = this._canvas.getContext('2d');
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243
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244 ctx.lineWidth = this._plotInfo.lineWidth;
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245 ctx.lineJoin = 'miter';
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246
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247 if (this._dataSource) {
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248 if (this._plotInfo.fillColor) {
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249 if (this._plotInfo.fillGradient) {
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250 var gradient = ctx.createLinearGradient(0,this._canvas.height,0,0);
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251 gradient.addColorStop(0,this._plotInfo.fillColor.toString());
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252 gradient.addColorStop(0.5,this._plotInfo.fillColor.toString());
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253 gradient.addColorStop(1, 'rgba(255,255,255,0)');
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254
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255 ctx.fillStyle = gradient;
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256 } else {
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257 ctx.fillStyle = this._plotInfo.fillColor.toString();
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258 }
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259
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260 ctx.beginPath();
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261 ctx.moveTo(0,0);
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262 this._plot(function(x,y) {
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263 ctx.lineTo(x,y);
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264 });
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265 if (this._plotInfo.fillFrom == Number.NEGATIVE_INFINITY) {
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266 ctx.lineTo(this._canvas.width, 0);
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267 } else if (this._plotInfo.fillFrom == Number.POSITIVE_INFINITY) {
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268 ctx.lineTo(this._canvas.width, this._canvas.height);
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269 ctx.lineTo(0, this._canvas.height);
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270 } else {
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271 ctx.lineTo(this._canvas.width, this._valueGeometry.toScreen(this._plotInfo.fillFrom));
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272 ctx.lineTo(0, this._valueGeometry.toScreen(this._plotInfo.fillFrom));
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273 }
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274 ctx.fill();
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275 }
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276
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277 if (this._plotInfo.lineColor) {
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278 ctx.strokeStyle = this._plotInfo.lineColor.toString();
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279 ctx.beginPath();
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280 var first = true;
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281 this._plot(function(x,y) {
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282 if (first) {
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283 first = false;
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284 ctx.moveTo(x,y);
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285 }
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286 ctx.lineTo(x,y);
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287 });
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288 ctx.stroke();
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289 }
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290
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291 if (this._plotInfo.dotColor) {
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292 ctx.fillStyle = this._plotInfo.dotColor.toString();
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293 var r = this._plotInfo.dotRadius;
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294 this._plot(function(x,y) {
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295 ctx.beginPath();
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296 ctx.arc(x,y,r,0,2*Math.PI,true);
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297 ctx.fill();
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298 });
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299 }
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300 }
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301
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302 if (this._eventSource) {
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303 var gradient = ctx.createLinearGradient(0,0,0,this._canvas.height);
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304 gradient.addColorStop(1, 'rgba(255,255,255,0)');
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305
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306 ctx.strokeStyle = gradient;
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307 ctx.fillStyle = gradient;
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308 ctx.lineWidth = this._plotInfo.eventLineWidth;
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309 ctx.lineJoin = 'miter';
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310
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311 var i = this._eventSource.getAllEventIterator();
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312 while (i.hasNext()) {
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313 var event = i.next();
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314 var color = event.getColor();
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315 color = (color) ? new Timeplot.Color(color) : this._plotInfo.lineColor;
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316 var eventStart = event.getStart().getTime();
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317 var eventEnd = event.getEnd().getTime();
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318 if (eventStart == eventEnd) {
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319 var c = color.toString();
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320 gradient.addColorStop(0, c);
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321 var start = this._timeGeometry.toScreen(eventStart);
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322 start = Math.floor(start) + 0.5; // center it between two pixels (makes the rendering nicer)
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323 var end = start;
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324 ctx.beginPath();
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325 ctx.moveTo(start,0);
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326 ctx.lineTo(start,this._canvas.height);
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327 ctx.stroke();
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328 var x = start - 4;
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329 var w = 7;
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330 } else {
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331 var c = color.toString(0.5);
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332 gradient.addColorStop(0, c);
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333 var start = this._timeGeometry.toScreen(eventStart);
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334 start = Math.floor(start) + 0.5; // center it between two pixels (makes the rendering nicer)
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335 var end = this._timeGeometry.toScreen(eventEnd);
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336 end = Math.floor(end) + 0.5; // center it between two pixels (makes the rendering nicer)
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337 ctx.fillRect(start,0,end - start, this._canvas.height);
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338 var x = start;
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339 var w = end - start - 1;
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340 }
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341
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342 var div = this._timeplot.putDiv(event.getID(),"timeplot-event-box",{
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343 left: Math.round(x),
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344 width: Math.round(w),
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345 top: 0,
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346 height: this._canvas.height - 1
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347 });
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348
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349 var plot = this;
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350 var clickHandler = function(event) {
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351 return function(elmt, evt, target) {
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352 var doc = plot._timeplot.getDocument();
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353 plot._closeBubble();
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354 var coords = SimileAjax.DOM.getEventPageCoordinates(evt);
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355 var elmtCoords = SimileAjax.DOM.getPageCoordinates(elmt);
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356 plot._bubble = SimileAjax.Graphics.createBubbleForPoint(coords.x, elmtCoords.top + plot._canvas.height, plot._plotInfo.bubbleWidth, plot._plotInfo.bubbleHeight, "bottom");
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357 event.fillInfoBubble(plot._bubble.content, plot._theme, plot._timeGeometry.getLabeler());
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358 }
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359 };
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360 var mouseOverHandler = function(elmt, evt, target) {
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361 elmt.oldClass = elmt.className;
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362 elmt.className = elmt.className + " timeplot-event-box-highlight";
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363 };
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364 var mouseOutHandler = function(elmt, evt, target) {
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365 elmt.className = elmt.oldClass;
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366 elmt.oldClass = null;
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367 }
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368
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369 if (!div.instrumented) {
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370 SimileAjax.DOM.registerEvent(div, "click" , clickHandler(event));
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371 SimileAjax.DOM.registerEvent(div, "mouseover", mouseOverHandler);
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372 SimileAjax.DOM.registerEvent(div, "mouseout" , mouseOutHandler);
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373 div.instrumented = true;
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374 }
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375 }
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376 }
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377 },
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378
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379 _plot: function(f) {
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380 var data = this._dataSource.getData();
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381 if (data) {
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382 var times = data.times;
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383 var values = data.values;
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384 var T = times.length;
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385 for (var t = 0; t < T; t++) {
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386 var x = this._timeGeometry.toScreen(times[t]);
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387 var y = this._valueGeometry.toScreen(values[t]);
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388 f(x, y);
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389 }
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390 }
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391 },
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392
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393 _closeBubble: function() {
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394 if (this._bubble != null) {
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395 this._bubble.close();
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396 this._bubble = null;
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397 }
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398 }
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399
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400 }