Mercurial > hg > STI-GWT
annotate war/scripts/sti/STICore.js @ 3:cf06b77a8bbd
Committed branch of the e4D repos sti-gwt branch 16384.
git-svn-id: http://dev.dariah.eu/svn/repos/eu.dariah.de/ap1/sti-gwt-dariah-geobrowser@36 f2b5be40-def6-11e0-8a09-b3c1cc336c6b
author | StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b> |
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date | Tue, 17 Jul 2012 13:34:40 +0000 |
parents | |
children | 517a6422d1bd |
rev | line source |
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3
cf06b77a8bbd
Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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1 /** |
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StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
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2 * defines the core component of the Spatio Temporal Interface |
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3 * |
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4 * @constructor |
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5 */ |
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6 function STICore(){ |
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7 |
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8 this.map; |
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9 this.timeplot; |
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10 |
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11 this.refining; |
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12 this.individualDataSet; |
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13 |
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14 this.takeTime; |
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15 |
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16 this.history; |
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17 this.historyIndex; |
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18 this.lockScreenContainer; |
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19 |
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20 this.initialize(); |
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21 this.blocked = false; |
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22 |
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23 }; |
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24 |
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25 STICore.prototype = { |
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26 |
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27 blockUI: function(){ |
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28 this.blocked = true; |
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29 fullscreen.addFullscreen(fullscreen.loaderContent()); |
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30 }, |
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31 |
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32 unblockUI: function(){ |
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33 this.blocked = false; |
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34 setTimeout( function(){ if( !this.blocked ){ setDefinedBounds(); } }, 150 ); |
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35 fullscreen.removeFullscreen(); |
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36 }, |
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37 |
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38 /** |
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39 * refines the given data by creating a new history entry |
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40 */ |
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41 refine: function(){ |
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42 if (this.refining > -2) { |
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43 var contains = false; |
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44 var newDataSets = []; |
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45 var oldDataSets = this.history[this.historyIndex].dataSets; |
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46 for (var i = 0; i < oldDataSets.length; i++) { |
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47 var dataSet = oldDataSets[i].copy(); |
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48 dataSet.source = oldDataSets[i].source; |
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49 for (var j = 0; j < oldDataSets[i].objects.length; j++) { |
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50 if ( oldDataSets[i].objects[j].percentage == 1 || this.refining > -1 && this.refining != i ){ |
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51 dataSet.addObject( oldDataSets[i].objects[j] ); |
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52 contains = true; |
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53 } |
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54 } |
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55 newDataSets.push(dataSet); |
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56 } |
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57 if (contains) { |
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58 this.addHistoryEntry( new HistoryEntry(newDataSets) ); |
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59 this.reset(); |
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60 this.initElements(); |
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61 } |
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62 else { |
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63 alert("Your Selection contains no elements!"); |
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64 } |
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65 } |
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66 else { |
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67 alert("For Refining choose an Area on the map or a Range on the Timeplot!"); |
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68 } |
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69 return -1; |
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70 }, |
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71 |
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72 /** |
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73 * refines the given data by creating a new history entry |
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74 */ |
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75 refineByTime: function(minTime,maxTime){ |
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76 var minDate = new Date(parseInt(minTime)); |
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77 var maxDate = new Date(parseInt(maxTime)); |
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78 if( this.timeplot.eds.minDate.getTime() == minDate.getTime() && |
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79 this.timeplot.eds.maxDate.getTime() == maxDate.getTime() ){ |
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80 return; |
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81 } |
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82 var newDataSets = []; |
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83 var oldDataSets = this.history[this.historyIndex].dataSets; |
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84 for (var i = 0; i < oldDataSets.length; i++) { |
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85 var dataSet = oldDataSets[i].copy(); |
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86 dataSet.source = oldDataSets[i].source; |
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87 for (var j = 0; j < oldDataSets[i].objects.length; j++) { |
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88 var o = oldDataSets[i].objects[j]; |
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89 if( o.inTime(minDate,maxDate) ){ |
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90 dataSet.addObject( o ); |
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91 } |
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92 } |
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93 newDataSets.push(dataSet); |
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94 } |
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95 this.addHistoryEntry( new HistoryEntry(newDataSets) ); |
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96 this.reset(); |
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97 this.initElements(); |
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98 }, |
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99 |
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100 /** |
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101 * refines a given dataset by a given text snippet |
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102 */ |
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103 refineByText: function(text,index){ |
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104 this.reset(); |
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105 var dataset = this.history[this.historyIndex].dataSets[index]; |
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106 for (var i = 0; i < dataset.objects.length; i++) { |
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107 var e = dataset.objects[i]; |
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108 if( e.name.toLowerCase().indexOf(text.toLowerCase()) != -1 ){ |
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109 e.setPercentage(1); |
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110 } |
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111 } |
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112 this.updateMapAndTimeAndTable(index); |
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113 }, |
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114 |
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115 /** |
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116 * adds selected elements of a specific dataset as a new dataset |
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117 * @param {int} id the id of the dataset |
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118 */ |
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119 storeSelected: function(id){ |
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120 var dataSets = this.history[this.historyIndex].dataSets; |
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121 if( dataSets.length == 4 ){ |
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122 alert( "The maximum number of 4 parallel datasets is reached!" ); |
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123 } |
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124 else { |
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125 var dataSet = dataSets[id].copy(); |
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126 var contains = false; |
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127 for (var j = 0; j < dataSets[id].objects.length; j++) { |
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128 if ( dataSets[id].objects[j].percentage == 1 ){ |
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129 dataSet.addObject( dataSets[id].objects[j] ); |
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130 contains = true; |
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131 } |
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132 } |
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133 if (contains) { |
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134 this.addDataSet(dataSet); |
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135 } |
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136 else { |
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137 alert("Your Selection contains no elements!"); |
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138 } |
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139 } |
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140 }, |
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141 |
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142 /** |
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143 * Adds a dataset to the actual history entry |
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144 */ |
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145 addDataSet: function( dataSet ){ |
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146 var oldDataSets = this.history[this.historyIndex].dataSets; |
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147 var newDataSets = oldDataSets.concat(dataSet); |
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148 this.addHistoryEntry(new HistoryEntry(newDataSets)); |
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149 this.initElements(); |
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150 this.reset(); |
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151 }, |
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152 |
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153 /** |
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154 * Sets the widgets for the core component |
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155 * |
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156 * @param {STIMap} map the javascript object of the map widget |
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157 * @param {STITimeplot} plot the javascript object of the timeplot widget |
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158 */ |
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159 setElements: function(map, timeplot){ |
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160 this.map = map; |
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161 this.timeplot = timeplot; |
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162 }, |
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163 |
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164 /** |
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165 * initializes the core component for the Spatio Temporal Interface. |
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166 * here, the handling of the search interface is defined (including undo, refine and clear selection button). |
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167 * furthermore, the elements (map, timeplot, tables) are instanciated. |
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168 */ |
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169 initialize: function(){ |
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170 |
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171 var context = this; |
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172 this.takeTime = false; |
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173 this.props = new STIProps(); |
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174 |
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175 this.history = []; |
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176 |
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177 this.history.push( new HistoryEntry([]) ); |
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178 this.historyIndex = 0; |
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179 |
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180 var Unselectable = { |
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181 enable: function(e){ |
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182 var e = e ? e : window.event; |
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183 if (e.button != 1) { |
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184 if (e.target) { |
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185 var targer = e.target; |
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186 } |
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187 else |
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188 if (e.srcElement) { |
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189 var targer = e.srcElement; |
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190 } |
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191 if( targer.tagName == undefined ){ |
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192 return false; |
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193 } |
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194 var targetTag = targer.tagName.toLowerCase(); |
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195 if ((targetTag != "input") && (targetTag != "textarea")) { |
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196 return false; |
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197 } |
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198 } |
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199 }, |
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200 disable: function(){ |
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201 return true; |
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202 } |
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203 } |
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204 |
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205 if (typeof(document.onselectstart) != "type filter textundefined") { |
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206 document.onselectstart = Unselectable.enable; |
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207 } |
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208 else { |
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209 document.onmousedown = Unselectable.enable; |
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210 document.onmouseup = Unselectable.disable; |
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211 } |
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212 |
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213 this.sources = []; |
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214 try { |
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215 var jsonString = this.getFileString("datasources.json"); |
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216 this.sources = eval('(' + jsonString + ')'); |
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217 } |
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218 catch(e){ |
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219 } |
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220 |
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221 this.lockScreenContainer = document.createElement("div"); |
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222 this.lockScreenContainer.setAttribute('class','lockScreenContainer'); |
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223 document.getElementsByTagName("body")[0].appendChild(this.lockScreenContainer); |
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224 |
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225 }, |
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226 |
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227 getFileString: function(url){ |
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228 var xmlhttp = false; |
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229 if (!xmlhttp) |
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230 try { |
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231 xmlhttp = new XMLHttpRequest(); |
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232 } |
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233 catch (e) { |
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234 xmlhttp = false; |
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235 } |
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236 if (typeof ActiveXObject != "undefined") { |
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237 if (!xmlhttp) |
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238 try { |
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239 xmlhttp = new ActiveXObject("MSXML2.XMLHTTP"); |
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240 } |
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241 catch (e) { |
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242 xmlhttp = false; |
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243 } |
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244 if (!xmlhttp) |
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245 try { |
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246 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); |
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247 } |
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248 catch (e) { |
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249 xmlhttp = false; |
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250 } |
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251 } |
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252 xmlhttp.open('GET', url, false); |
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253 xmlhttp.send(""); |
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254 return xmlhttp.responseText; |
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255 }, |
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256 |
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257 /** |
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258 * constructs an url to a dynamic datasource with the specific user input as attribute |
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259 * @param {int} ds the datasource index |
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260 * @param {String} input the user input |
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261 */ |
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262 retrieveKml: function(ds,input){ |
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263 var url = this.sources[ds].url; |
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264 // var tags = input.replace(/[^a-zA-Z0-9]/g,","); |
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265 // url += tags; |
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266 url += input; |
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267 this.parseKml(url,input,ds); |
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268 }, |
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269 |
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270 parseIt: function(xml,term,ds){ |
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271 var getTimeData = function( timeString ){ |
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272 try { |
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273 var bc = false; |
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274 if( timeString.startsWith("-") ){ |
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275 bc = true; |
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276 timeString = timeString.substring(1); |
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277 } |
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278 var timeSplit = timeString.split("T"); |
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279 var timeData = timeSplit[0].split("-"); |
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280 for (var i = 0; i < timeData.length; i++) { |
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281 parseInt(timeData[i]); |
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282 } |
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283 if( bc ){ |
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284 timeData[0] = "-"+timeData[0]; |
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285 } |
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286 if (timeSplit.length == 1) { |
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287 return timeData; |
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288 } |
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289 var dayData; |
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290 if (timeSplit[1].indexOf("Z") != -1) { |
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291 dayData = timeSplit[1].substring(0, timeSplit[1].indexOf("Z") - 1).split(":"); |
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292 } |
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293 else { |
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294 dayData = timeSplit[1].substring(0, timeSplit[1].indexOf("+") - 1).split(":"); |
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295 } |
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296 for (var i = 0; i < timeData.length; i++) { |
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297 parseInt(dayData[i]); |
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298 } |
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299 return timeData.concat(dayData); |
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300 } |
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301 catch (exception) { |
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302 return null; |
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303 } |
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304 } |
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305 |
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306 var time = SimileAjax.DateTime; |
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307 var newObjects = new Array(); |
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308 var elements = xml.getElementsByTagName("Placemark"); |
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309 var granularity = 0; |
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310 |
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311 if( elements.length == 0 ){ |
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312 this.unblockUI(); |
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313 return; |
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314 } |
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315 |
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316 for (var i = 0; i < elements.length; i++) { |
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317 |
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318 var placemark = elements[i]; |
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319 var name, description, place, timeData, coordinates, timeStamp, timeSpan, g; |
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320 |
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321 try { |
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322 name = placemark.getElementsByTagName("name")[0].childNodes[0].nodeValue; |
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323 } |
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324 catch(e){ |
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325 name = ""; |
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326 } |
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327 |
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328 try { |
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329 description = placemark.getElementsByTagName("description")[0].childNodes[0].nodeValue; |
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330 } |
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331 catch(e){ |
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332 description = ""; |
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333 } |
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334 |
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335 try { |
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336 place = placemark.getElementsByTagName("address")[0].childNodes[0].nodeValue; |
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337 } |
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338 catch(e){ |
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339 place = ""; |
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340 } |
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341 |
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342 var getDate = function(timeData){ |
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343 var date; |
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344 if (timeData.length == 6) { |
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345 g = time.SECOND; |
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346 date = new Date(Date.UTC(timeData[0], timeData[1]-1, timeData[2], timeData[3], timeData[4], timeData[5])); |
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347 } |
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348 else if (timeData.length == 3) { |
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349 g = time.DAY; |
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350 date = new Date(Date.UTC(timeData[0], timeData[1]-1, timeData[2])); |
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351 } |
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352 else if (timeData.length == 2) { |
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353 g = time.MONTH; |
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354 date = new Date(Date.UTC(timeData[0], timeData[1]-1, 1)); |
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355 } |
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356 else if (timeData.length == 1) { |
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357 g = time.YEAR; |
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358 date = new Date(Date.UTC(timeData[0], 0, 1)); |
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359 } |
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360 if (granularity < g) { |
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361 granularity = g; |
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362 } |
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363 if( timeData[0] && timeData[0] < 100 ){ |
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364 date.setFullYear(timeData[0]); |
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365 } |
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366 return date; |
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367 } |
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368 |
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369 try { |
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370 timeData = getTimeData( placemark.getElementsByTagName("TimeStamp")[0].getElementsByTagName("when")[0].childNodes[0].nodeValue ); |
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371 if( timeData != null ){ |
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372 timeStamp = getDate(timeData); |
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373 } |
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374 if( timeStamp == undefined ){ |
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375 continue; |
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376 } |
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377 } |
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378 catch(e){ |
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379 try { |
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380 timeStamp = undefined; |
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381 var timeSpanTag = placemark.getElementsByTagName("TimeSpan")[0]; |
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382 var timeDataStart = getTimeData( timeSpanTag.getElementsByTagName("begin")[0].childNodes[0].nodeValue ); |
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383 var startTime = getDate(timeDataStart); |
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384 var timeDataEnd = getTimeData( timeSpanTag.getElementsByTagName("end")[0].childNodes[0].nodeValue ); |
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385 var endTime = getDate(timeDataEnd); |
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386 timeSpan = { start: startTime, end: endTime }; |
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387 } |
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388 catch(e){ |
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389 continue; |
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390 } |
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391 } |
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392 |
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393 try { |
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394 coordinates = placemark.getElementsByTagName("Point")[0].getElementsByTagName("coordinates")[0].childNodes[0].nodeValue; |
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395 var lonlat = coordinates.split(","); |
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396 if( lonlat[0] == "" || lonlat[1] == "" || isNaN(lonlat[0]) || isNaN(lonlat[1]) ){ |
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397 continue; |
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398 } |
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399 newObjects.push(new DataObject(name, description, place, timeStamp, timeSpan, g, lonlat[0], lonlat[1])); |
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400 } |
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401 catch(e){ |
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402 continue; |
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403 } |
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404 |
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405 } |
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406 var dataset = new DataSet( newObjects, term, granularity ); |
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407 dataset.source = ds; |
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408 var core = this; |
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409 var status = document.getElementById("statusText"); |
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410 status.innerHTML = "Space & Time Aggregation ..."; |
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411 setTimeout( function(){ |
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412 core.addDataSet( dataset ); |
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413 core.unblockUI(); |
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414 }, |
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415 1 ); |
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416 }, |
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417 |
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418 /** |
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419 * parses the kml-file which includes the results for a given search request |
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420 * @param {File} kmlFile |
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421 * @param {String} term the term identifier for the resulting dataset |
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422 */ |
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423 parseKml: function(kmlFile,term,ds){ |
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424 var core = this; |
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425 if( this.blocked ){ |
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426 setTimeout( function(){ core.parseKml(kmlFile,term,ds); }, 100 ); |
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427 return; |
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428 } |
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429 core.blockUI(); |
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430 $.ajax({ |
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431 url: kmlFile, |
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432 dataType: "xml", |
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433 beforeSend: function(){ |
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434 var status = document.getElementById("statusText"); |
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435 status.innerHTML = "Retrieving Data ..."; |
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436 }, |
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437 success: function(xml){ |
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438 var status = document.getElementById("statusText"); |
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439 status.innerHTML = "Parsing Data ..."; |
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440 setTimeout( function(){ core.parseIt(xml,term,ds); }, 1 ); |
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441 } |
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442 }); |
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443 }, |
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444 |
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445 /** |
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446 * updates the timeplot and table element. |
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447 * its called from the STIMap object, when objects on the map had been selected by featureSelect or polygon. |
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448 * @param {boolean} hover true, if there was a hover selection |
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449 */ |
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450 updateTimeAndTable: function(hover){ |
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451 updateTables(hover); |
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452 this.timeplot.polesBySlices(); |
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453 this.refining = -1; |
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454 }, |
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455 |
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456 /** |
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457 * updates the map, timeplot and table element. |
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458 * its called from the STITable object, when a text selection has been done |
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459 */ |
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460 updateMapAndTimeAndTable: function(index){ |
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461 updateTables(hover); |
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462 this.timeplot.polesBySlices(); |
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463 this.map.updateMap(); |
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464 this.refining = index; |
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465 }, |
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466 |
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467 /** |
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468 * updates the timeplot and map element. |
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469 * its called from the STITable object, when objects in one of the tables had been selected. |
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470 */ |
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471 updateTimeAndMap: function(){ |
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472 this.map.updateMap(); |
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473 this.timeplot.polesBySlices(); |
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474 this.refining = -1; |
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475 }, |
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476 |
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477 /** |
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478 * updates the table and map element. |
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479 * its called from the STITimeplot object, when objects in the timeplot had been selected by timestamp or -range. |
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480 * @param {boolean} hover true, if there was a hover selection |
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481 */ |
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482 updateTableAndMap: function(hover){ |
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483 updateTables(hover); |
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484 this.map.updateMap(); |
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485 this.refining = -1; |
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486 }, |
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487 |
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488 /** |
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489 * initializes the sti components (map, timeplot, table) depending on the top masks of the data sets. |
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490 * its called after a new search was performed, refining or undo button had been clicked |
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491 */ |
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492 initElements: function(){ |
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493 this.reset(); |
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494 var dataSets = this.history[this.historyIndex].dataSets; |
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495 var granularity = 0; |
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496 for( var i=0; i<dataSets.length; i++ ){ |
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497 if( dataSets[i].maxGranularity > granularity ){ |
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498 granularity = dataSets[i].maxGranularity; |
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499 } |
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500 } |
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501 this.timeplot.initTimeplot(dataSets, granularity); |
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502 this.map.initObjectLayer(dataSets); |
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503 initTables(); |
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504 }, |
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505 |
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506 /** |
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507 * deletes a data set with specific index |
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508 * @param {int} index the index of the data set to delete |
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509 */ |
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510 deleteDataSet: function(index){ |
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511 var color = colors[index]; |
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512 colors.splice(index, 1); |
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513 var oldDataSets = this.history[this.historyIndex].dataSets; |
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514 var newDataSets = []; |
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515 for( var i=0; i<oldDataSets.length; i++ ){ |
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516 if( i != index ){ |
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517 newDataSets.push( oldDataSets[i] ); |
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518 } |
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519 } |
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520 colors.splice( newDataSets.length, 0, color ); |
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521 this.addHistoryEntry(new HistoryEntry(newDataSets)); |
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522 this.initElements(); |
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523 this.reset(); |
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524 }, |
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525 |
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526 /** |
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527 * Switches to another history entry with the given index |
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528 * @param {int} index the index of the history entry to load |
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529 */ |
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530 switchThroughHistory: function( index ){ |
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531 this.historyIndex = index; |
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532 this.initElements(); |
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533 }, |
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534 |
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535 /** |
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536 * Adds a new history entry containing actual datasets |
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537 * @param {HistoryEntry} historyEntry the history entry to add |
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538 */ |
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539 addHistoryEntry: function( historyEntry ){ |
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540 this.history = this.history.slice(0,this.historyIndex+1); |
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541 this.history.push(historyEntry); |
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542 this.historyIndex = this.history.length - 1; |
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543 addHistoryItem(this.historyIndex); |
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544 }, |
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545 |
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546 /** |
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547 * adds an element to the user individual data set |
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548 * @param {DataObject} object the data object to add |
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549 */ |
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550 addElement: function(object){ |
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551 if (this.individualDataSet == null) { |
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552 this.individualDataSet = new DataSet([], "individual", 0); |
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553 var oldDataSets = this.history[this.historyIndex].dataSets; |
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554 var newDataSets = oldDataSets.concat(this.individualDataSet); |
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555 this.addHistoryEntry(new HistoryEntry(newDataSets)); |
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556 } |
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557 this.individualDataSet.addObject(object); |
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558 this.initElements(); |
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559 this.reset(); |
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560 }, |
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561 |
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562 /** |
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563 * resets the core within all elements and data objects to non-selection-status |
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564 */ |
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565 reset: function(){ |
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566 this.refining = -2; |
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567 var dataSets = this.history[this.historyIndex].dataSets; |
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568 for (var i = 0; i < dataSets.length; i++){ |
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569 for (var j = 0; j < dataSets[i].objects.length; j++){ |
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570 dataSets[i].objects[j].setPercentage(0); |
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571 dataSets[i].objects[j].setHover(false); |
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572 } |
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573 } |
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574 this.timeplot.resetTimeplot(); |
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575 this.map.resetMap(); |
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576 updateTables(false); |
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577 }, |
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578 |
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579 /** |
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580 * Security hover unselection of elements if browser events got stucked |
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581 */ |
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582 undoHover: function(update){ |
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583 |
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584 this.map.hoverUnselect(); |
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585 this.timeplot.hoverUnselect(update); |
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586 }, |
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587 |
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588 createLink: function(){ |
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589 var c = this.map.openlayersMap.getCenter(); |
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590 var map = this.map.openlayersMap.baseLayer.id; |
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591 var mapCenter = { lon: c.lon, lat: c.lat }; |
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592 var mapZoom = this.map.openlayersMap.getZoom(); |
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593 var data = []; |
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594 // store complete history in data --> flow of history events |
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595 // history event can be: loading/deleting dataset, refinement by timerange/polygon at specific zoom level/point at specific zoom level, a loaded link history (this) |
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596 // flag for the ability to display stored history or not |
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597 }, |
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598 |
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599 lockScreen: function(){ |
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600 this.lockScreenContainer.style.visibility = "visible"; |
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601 this.lockScreenContainer.style.height = getDocHeight()+"px"; |
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602 }, |
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603 |
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604 lockScreenMessage: function(div){ |
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605 this.lockScreenContainer.innerHTML = ""; |
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606 var lockScreenDiv = document.createElement("div"); |
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607 lockScreenDiv.setAttribute('class','lockScreen'); |
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608 this.lockScreenContainer.appendChild(lockScreenDiv); |
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609 this.lockScreenContainer.appendChild(div); |
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610 }, |
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611 |
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612 unlockScreen: function(){ |
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613 this.lockScreenContainer.style.visibility = "hidden"; |
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614 } |
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615 |
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616 }; |
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617 |
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618 /** |
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619 * defines a history entry |
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620 * @param {DataSet[]} dataSets the datasets of this history entry |
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621 * |
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622 * @constructor |
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623 */ |
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624 function HistoryEntry( dataSets ){ |
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625 this.dataSets = dataSets; |
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626 }; |