Mercurial > hg > STI-GWT
annotate src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java @ 59:3a7691d29566 CellTable
Sorting of the columns in the CellTable.
author | Sebastian Kruse <skruse@mpiwg-berlin.mpg.de> |
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date | Tue, 11 Dec 2012 17:14:26 +0100 |
parents | 39b4d5d590ba |
children | aa1808d94d80 |
rev | line source |
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1 package econnect.wp3_3.client.widgets.table; |
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2 |
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3 import java.util.ArrayList; |
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4 import java.util.Comparator; |
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5 import java.util.List; |
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6 |
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7 import com.google.gwt.user.cellview.client.CellTable; |
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8 import com.google.gwt.user.cellview.client.ColumnSortEvent.ListHandler; |
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9 import com.google.gwt.user.cellview.client.SimplePager; |
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10 import com.google.gwt.user.cellview.client.TextColumn; |
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11 import com.google.gwt.user.client.rpc.AsyncCallback; |
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12 import com.google.gwt.user.client.ui.Anchor; |
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13 import com.google.gwt.user.client.ui.Button; |
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14 import com.google.gwt.user.client.ui.FormPanel; |
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15 import com.google.gwt.user.client.ui.Grid; |
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16 import com.google.gwt.user.client.ui.Hidden; |
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17 import com.google.gwt.user.client.ui.Image; |
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18 import com.google.gwt.user.client.ui.Label; |
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19 import com.google.gwt.user.client.ui.HTML; |
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20 import com.google.gwt.user.client.ui.HasHorizontalAlignment; |
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21 import com.google.gwt.user.client.ui.TextBox; |
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22 import com.google.gwt.view.client.CellPreviewEvent; |
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23 import com.google.gwt.view.client.CellPreviewEvent.Handler; |
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24 import com.google.gwt.view.client.ListDataProvider; |
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25 import com.google.gwt.view.client.Range; |
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26 import com.google.gwt.view.client.RangeChangeEvent; |
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27 import com.google.gwt.core.client.GWT; |
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28 import com.google.gwt.dom.client.NodeList; |
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29 import com.google.gwt.dom.client.Style.BorderStyle; |
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30 import com.google.gwt.dom.client.TableCellElement; |
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31 import com.google.gwt.event.dom.client.ClickHandler; |
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32 import com.google.gwt.event.dom.client.ClickEvent; |
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33 import com.google.gwt.event.dom.client.MouseOutEvent; |
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34 import com.google.gwt.event.dom.client.MouseOverEvent; |
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35 import com.google.gwt.event.dom.client.MouseOverHandler; |
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36 import com.google.gwt.event.dom.client.MouseOutHandler; |
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37 import com.google.gwt.http.client.URL; |
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38 |
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39 import econnect.wp3_3.client.core.ApplicationConstants; |
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40 import econnect.wp3_3.client.core.DataObject; |
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41 import econnect.wp3_3.client.core.DataSet; |
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42 import econnect.wp3_3.client.core.StiConstants; |
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43 import econnect.wp3_3.client.core.StiCore; |
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44 import econnect.wp3_3.client.services.ExportWriterInterface; |
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45 import econnect.wp3_3.client.services.ExportWriterInterfaceAsync; |
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46 |
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47 /** |
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48 * Implementation of a dynamic table for one dataset |
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49 */ |
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50 public class DynamicStiTable extends Grid { |
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51 |
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52 /** |
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53 * The maximum number of rows of the table |
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54 */ |
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55 private int maxRows = 10; |
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56 |
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57 /** |
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58 * The sti core component |
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59 */ |
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60 private StiCore core; |
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61 |
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62 /** |
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63 * The index of the dataset |
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64 */ |
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65 private int index; |
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66 |
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67 /** |
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68 * The dataset of this dynamic table |
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69 */ |
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70 private DataSet dataSet; |
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71 |
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72 /** |
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73 * ArrayList that holds all elements that can be shown |
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74 * (smaller than "dataSet" if showSelected) |
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75 */ |
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76 private ArrayList<DataObject> actualObjectSet; |
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77 |
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78 /** |
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79 * Provider that hands the data to the table |
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80 */ |
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81 private ListDataProvider<DataObject> dataProvider; |
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82 |
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83 /** |
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84 * CellTable which displays the data |
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85 */ |
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86 private CellTable<DataObject> elementsTable; |
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87 |
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88 /** |
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89 * The dataobjects, which are presented at the actual page |
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90 */ |
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91 //private DataObject[][] displayedObjects; |
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92 |
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93 /** |
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94 * The number-of-results label |
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95 */ |
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96 private Label results; |
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97 |
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98 /** |
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99 * The image for show selected elements |
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100 */ |
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101 private Image showSelected; |
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102 |
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103 /** |
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104 * The image for show all elements |
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105 */ |
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106 private Image showAll; |
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107 |
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108 /** |
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109 * This value tells the view status: 1 for showAll, -1 for showSelected, 0 otherwise |
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110 */ |
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111 private int viewAll = 1; |
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112 |
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113 /** |
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114 * Anchor that holds the URL for the KML download |
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115 */ |
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116 private Anchor aDownloadKML; |
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117 |
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118 /** |
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119 * RPC Interface for writing the KML file |
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120 */ |
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121 private ExportWriterInterfaceAsync exportWriter; |
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122 |
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123 /** |
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124 * Constructor for initialization of the dynamic table |
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125 * |
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126 * @param core object to allow interaction with all javascript components |
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127 * @param id id of the dataset |
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128 */ |
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129 public DynamicStiTable( StiCore stiCore, final int id ){ |
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130 |
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131 final ApplicationConstants constants = (ApplicationConstants) GWT.create(ApplicationConstants.class); |
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132 final StiConstants textConstants = (StiConstants) GWT.create(StiConstants.class); |
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133 |
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134 this.resize(2,1); |
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135 this.addStyleName("dataTable"); |
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136 this.addStyleName("center"); |
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137 |
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138 this.index = id; |
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139 this.core = stiCore; |
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140 this.dataSet = core.getDataSets().get(index); |
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141 this.actualObjectSet = new ArrayList<DataObject>(); |
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142 setActualObjectSet(); |
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143 |
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144 showAll = new Image("images/viewAll"+(core.getColorId(index))+".png"); |
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145 showAll.setTitle(textConstants.showAll()); |
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146 showSelected = new Image("images/viewSelected"+(core.getColorId(index))+".png"); |
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147 showSelected.setTitle(textConstants.showSelected()); |
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148 showAll.addStyleName("selectedView"); |
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149 showAll.addStyleName("view"); |
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150 showSelected.addStyleName("view"); |
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151 showAll.addClickHandler(new ClickHandler() { |
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152 public void onClick(ClickEvent event) { |
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153 if( viewAll != 1 ){ |
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154 showSelected.removeStyleName("selectedView"); |
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155 showAll.addStyleName("selectedView"); |
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156 viewAll = 1; |
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157 setActualObjectSet(); |
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158 } |
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159 } |
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160 }); |
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161 showSelected.addClickHandler(new ClickHandler() { |
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162 public void onClick(ClickEvent event) { |
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163 if( viewAll != -1 ){ |
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164 viewAll = -1; |
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165 if( setActualObjectSet() ){ |
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166 showAll.removeStyleName("selectedView"); |
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167 showSelected.addStyleName("selectedView"); |
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168 } |
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169 else { |
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170 viewAll = 1; |
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171 } |
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172 } |
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173 } |
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174 }); |
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175 |
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176 Image storeSelected = new Image("images/storeSelected"+(core.getColorId(index))+".png"); |
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177 storeSelected.setTitle(textConstants.storeSelected()); |
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178 storeSelected.addStyleName("view"); |
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179 storeSelected.addClickHandler(new ClickHandler() { |
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180 public void onClick(ClickEvent event) { |
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181 core.storeSelected(id); |
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182 } |
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183 }); |
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184 |
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185 Grid showOptions = new Grid(1,3); |
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186 showOptions.setWidget(0,0,showAll); |
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187 showOptions.setWidget(0,1,showSelected); |
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188 showOptions.setWidget(0,2,storeSelected); |
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189 |
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190 final TextBox textualSearch = new TextBox(); |
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191 final Button search = new Button("go"); |
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192 final Image cancelImage = new Image(constants.cancelImage()); |
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193 final Image refineImage = new Image(constants.refineImage()); |
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194 final Grid buttons = new Grid(1,2); |
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195 buttons.setWidget(0, 0, refineImage); |
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196 buttons.setWidget(0, 1, cancelImage); |
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197 final Grid refine = new Grid(1,3); |
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198 refine.setWidget(0,0,textualSearch); |
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199 refine.setWidget(0,1,search); |
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200 search.addClickHandler(new ClickHandler() { |
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201 public void onClick(ClickEvent event) { |
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202 if( !textualSearch.getText().equals("") ){ |
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203 refineByText(textualSearch.getText()); |
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204 textualSearch.setEnabled(false); |
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205 refine.setWidget(0, 1, buttons); |
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206 } |
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207 } |
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208 }); |
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209 refineImage.addClickHandler(new ClickHandler() { |
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210 public void onClick(ClickEvent event) { |
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211 core.refine(); |
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212 } |
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213 }); |
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214 cancelImage.addClickHandler(new ClickHandler() { |
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215 public void onClick(ClickEvent event) { |
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216 textualSearch.setEnabled(true); |
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217 core.reset(); |
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218 |
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219 //TODO: das gibt es nun mehrfach im Code, sollte also in eine Funktion |
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220 //überfuhrt werden |
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221 showSelected.removeStyleName("selectedView"); |
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222 showAll.addStyleName("selectedView"); |
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223 viewAll = 1; |
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224 setActualObjectSet(); |
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225 |
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226 refine.setWidget(0, 1, search); |
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227 } |
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228 }); |
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229 |
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230 this.results = new Label(); |
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231 this.results.setStyleName("resultsLabel"); |
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232 |
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233 Label page = new Label(textConstants.page()+":"); |
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234 page.setStyleName("pageLabel"); |
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235 |
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236 //This anchor will hold the URL of the export-file |
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237 //for download from the ExportServlet |
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238 aDownloadKML = new Anchor("download KML"); |
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239 aDownloadKML.setVisible(false); |
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240 aDownloadKML.addClickHandler(new ClickHandler() { |
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241 public void onClick(ClickEvent event) { |
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242 aDownloadKML.setVisible(false); |
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243 } |
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244 }); |
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245 |
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246 Image export = new Image(constants.exportImage()); |
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247 export.addClickHandler(new ClickHandler() { |
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248 public void onClick(ClickEvent event) { |
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249 //create KML file |
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250 createKMLFile(); |
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251 } |
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252 }); |
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253 export.addStyleName("export"); |
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254 export.setTitle(textConstants.exportDataSet()); |
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255 |
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256 Image delete = new Image(constants.deleteImage()); |
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257 delete.addClickHandler(new ClickHandler() { |
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258 public void onClick(ClickEvent event) { |
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259 core.deleteDataSet(index); |
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260 } |
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261 }); |
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262 delete.addStyleName("delete"); |
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263 delete.setTitle(textConstants.deleteDataSet()); |
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264 |
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265 Grid func = new Grid(1,3); |
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266 |
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267 func.setWidget(0, 0, aDownloadKML); |
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268 func.setWidget(0, 1, export); |
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269 func.setWidget(0, 2, delete); |
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270 func.addStyleName("center"); |
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271 |
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272 this.elementsTable = new CellTable<DataObject>(); |
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273 |
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274 dataProvider = new ListDataProvider<DataObject>(); |
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275 dataProvider.addDataDisplay(this.elementsTable); |
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276 |
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277 TextColumn<DataObject> nameColumn = new TextColumn<DataObject>() { |
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278 @Override |
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279 public String getValue(DataObject object) { |
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280 return object.getName(); |
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281 } |
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282 }; |
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283 nameColumn.setSortable(true); |
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284 this.elementsTable.addColumn(nameColumn, "Name"); |
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285 |
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286 TextColumn<DataObject> placeColumn = new TextColumn<DataObject>() { |
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287 @Override |
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288 public String getValue(DataObject object) { |
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289 return object.getPlace(); |
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290 } |
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291 }; |
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292 placeColumn.setSortable(true); |
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293 this.elementsTable.addColumn(placeColumn, "Place"); |
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294 |
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295 TextColumn<DataObject> descriptionColumn = new TextColumn<DataObject>() { |
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296 @Override |
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297 public String getValue(DataObject object) { |
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298 return object.getDescription(); |
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299 } |
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300 }; |
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301 descriptionColumn.setSortable(true); |
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302 this.elementsTable.addColumn(descriptionColumn, "Description"); |
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303 |
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304 SimplePager pager = new SimplePager(); |
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305 pager.setDisplay(this.elementsTable); |
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306 |
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307 dataProvider.setList(this.actualObjectSet); |
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308 |
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309 //The actual (at this time lexicographical) sorting routine. |
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310 //TODO: remove redundant code, make this more abstract |
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311 ListHandler<DataObject> columnSortHandler = new ListHandler<econnect.wp3_3.client.core.DataObject>(dataProvider.getList()); |
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312 columnSortHandler.setComparator(nameColumn, |
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313 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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314 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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315 if (o1 == o2) |
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316 return 0; |
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317 |
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318 if (o1 != null) |
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319 return (o2 != null) ? o1.getName().compareTo(o2.getName()) : 1; |
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320 |
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321 return -1; |
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322 } |
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323 }); |
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324 columnSortHandler.setComparator(placeColumn, |
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325 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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326 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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327 if (o1 == o2) |
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328 return 0; |
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329 |
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330 if (o1 != null) |
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331 return (o2 != null) ? o1.getPlace().compareTo(o2.getPlace()) : 1; |
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332 |
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333 return -1; |
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334 } |
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335 }); |
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336 columnSortHandler.setComparator(descriptionColumn, |
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337 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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338 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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339 if (o1 == o2) |
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340 return 0; |
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341 |
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342 if (o1 != null) |
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343 return (o2 != null) ? o1.getDescription().compareTo(o2.getDescription()) : 1; |
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344 |
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345 return -1; |
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346 } |
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347 }); |
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348 this.elementsTable.addColumnSortHandler(columnSortHandler); |
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349 |
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350 //Redraw row colors on page change |
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351 this.elementsTable.addRangeChangeHandler(new RangeChangeEvent.Handler(){ |
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352 public void onRangeChange(RangeChangeEvent event){ |
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353 updateView(false); |
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354 } |
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355 }); |
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356 |
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357 this.elementsTable.setColumnWidth(nameColumn, "33%"); |
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358 this.elementsTable.setColumnWidth(placeColumn, "33%"); |
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359 this.elementsTable.setColumnWidth(descriptionColumn, "33%"); |
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360 |
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361 //This handler adds the hover-functionality to the table, |
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362 //basically highlighting of rows (and in the map/timeplot) |
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363 this.elementsTable.addCellPreviewHandler(new Handler<DataObject>() |
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364 { |
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365 //@Override |
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366 public void onCellPreview( |
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367 CellPreviewEvent<DataObject> event) |
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368 { |
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369 boolean wasChanged = false; |
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370 |
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371 if ("mouseover".equals(event.getNativeEvent().getType())) { |
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372 DataObject hoveredObject = event.getValue(); |
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373 |
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374 if (!hoveredObject.getHover()){ |
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375 hoveredObject.setHover(true); |
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376 |
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377 wasChanged = true; |
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378 } |
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379 } |
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380 else if ("mouseout".equals(event.getNativeEvent().getType())) { |
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381 DataObject hoveredObject = event.getValue(); |
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382 |
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383 if (hoveredObject.getHover()){ |
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384 hoveredObject.setHover(false); |
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385 |
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386 wasChanged = true; |
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387 } |
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388 } |
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389 else if ("click".equals(event.getNativeEvent().getType())) { |
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390 DataObject clickedObject = event.getValue(); |
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391 |
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392 if (clickedObject.getPercentage() > 0){ |
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393 clickedObject.setPercentage(0); |
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394 |
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395 } else { |
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396 clickedObject.setPercentage(1); |
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397 } |
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398 |
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399 wasChanged = true; |
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400 } |
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401 |
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402 if (wasChanged) { |
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403 updateView(true); |
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404 core.updateTimeAndMap(); |
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405 } |
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406 } |
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407 }); |
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408 |
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409 this.setWidget(1, 0, this.elementsTable); |
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410 |
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411 Grid tableControls = new Grid(1,5); |
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412 tableControls.setWidget(0,0,showOptions); |
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413 tableControls.setWidget(0,1,refine); |
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414 tableControls.setWidget(0,2,this.results); |
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415 tableControls.setWidget(0,3,pager); |
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416 tableControls.setWidget(0,4,func); |
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417 tableControls.setStyleName("tableControls"); |
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418 |
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419 this.setWidget(0, 0, tableControls); |
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420 |
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421 tableControls.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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422 |
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423 this.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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424 this.getCellFormatter().setHorizontalAlignment(1, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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425 this.getCellFormatter().setWidth(1, 0, "100%"); |
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426 } |
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427 |
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428 /** |
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429 * Sets the actual object set; depends on the showAll and showSelected selection |
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430 * |
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431 * @return boolean value, if there are selected objects |
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432 */ |
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433 private boolean setActualObjectSet(){ |
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434 |
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435 boolean dataSetWasEmpty = false; |
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436 |
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437 if( viewAll == -1 ){ |
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438 |
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439 this.actualObjectSet.clear(); |
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440 |
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441 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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442 DataObject object = this.dataSet.getObjects().get(i); |
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443 if( object.isSelected() ){ |
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444 this.actualObjectSet.add(object); |
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445 } |
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446 } |
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447 if( this.actualObjectSet.size() == 0 ){ |
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448 //TODO: Wenn die derzeitige Auswahl _keine_ Elemente |
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449 //enthält, werden _alle_ angezeigt. Ist das sinnvoll? |
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450 dataSetWasEmpty = true; |
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451 this.viewAll = 1; |
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452 } |
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453 } |
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454 if( this.viewAll == 1 ){ |
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455 this.actualObjectSet.clear(); |
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456 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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457 this.actualObjectSet.add(this.dataSet.getObjects().get(i)); |
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458 } |
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459 } |
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460 |
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461 //if the dataProvider already exists, refresh the |
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462 //displayed data |
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463 if (this.dataProvider != null) { |
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464 |
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465 //refresh data |
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466 this.dataProvider.refresh(); |
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467 this.elementsTable.setRowCount(this.actualObjectSet.size()); |
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468 |
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469 this.updateView(false); |
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470 } |
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471 |
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472 if (dataSetWasEmpty) |
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473 return false; |
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474 else |
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475 return true; |
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476 } |
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477 |
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478 /** |
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479 * Creates a (preliminary) KML file from the data in the current data set |
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480 */ |
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481 private void createKMLFile(){ |
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482 String kmlContent = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><kml xmlns=\"http://www.opengis.net/kml/2.2\"><Document>"; |
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483 |
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484 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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485 DataObject currentDataObject = this.dataSet.getObjects().get(i); |
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486 |
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487 String name = currentDataObject.getName(); |
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488 String description = currentDataObject.getDescription(); |
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489 String place = currentDataObject.getPlace(); |
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490 String lat = currentDataObject.getLat(); |
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491 String lon = currentDataObject.getLon(); |
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492 String timeStamp = currentDataObject.getTimeStamp(); |
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493 String timeSpanStart = currentDataObject.getTimeSpanStart(); |
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494 String timeSpanEnd = currentDataObject.getTimeSpanEnd(); |
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495 |
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496 String kmlEntry = "<Placemark>"; |
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497 |
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498 kmlEntry += "<name><![CDATA[" + name + "]]></name>"; |
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499 kmlEntry += "<address><![CDATA[" + place + "]]></address>"; |
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500 kmlEntry += "<description><![CDATA[" + description + "]]></description>"; |
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501 kmlEntry += "<Point><coordinates>" + lon + "," + lat + "</coordinates></Point>"; |
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502 |
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503 if ( (timeStamp != null) && (timeStamp != "undefined") ) { |
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504 kmlEntry += "<TimeStamp><when>" + timeStamp + "</when></TimeStamp>"; |
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505 } else { |
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506 kmlEntry += "<TimeSpan><begin>" + timeSpanStart + "</begin><end>" + timeSpanEnd + "</end></TimeSpan>"; |
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507 } |
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508 |
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509 kmlEntry += "</Placemark>"; |
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510 |
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511 kmlContent += kmlEntry; |
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512 } |
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513 |
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514 kmlContent += "</Document></kml>"; |
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515 |
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516 exportWriter = GWT.create(ExportWriterInterface.class); |
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517 |
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518 exportWriter.writeKMLFile(kmlContent, |
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519 new AsyncCallback<String>() { |
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520 public void onFailure(Throwable caught) { |
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521 //TODO: error message in layover? |
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522 //there needs to be an error-window for KML parser failures anyway |
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523 //this one should be used |
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524 int i = 1; |
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525 } |
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526 public void onSuccess(String exportFileName) { |
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527 |
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528 String url = GWT.getModuleBaseURL(); |
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529 url = url + "ExportServlet?ExportedFilename=" + URL.encode(exportFileName); |
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530 |
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531 aDownloadKML.setHref(url); |
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532 aDownloadKML.setVisible(true); |
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533 } |
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534 } |
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535 ); |
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536 } |
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537 |
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538 /** |
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539 * Refines the currently selected dataset (table) by the search term entered. |
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540 * |
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541 */ |
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542 private void refineByText(String searchString){ |
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543 |
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544 String lowerCaseSearchString = searchString.toLowerCase(); |
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545 |
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546 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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547 DataObject currentDataObject = this.dataSet.getObjects().get(i); |
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548 |
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549 String name = currentDataObject.getName(); |
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550 String description = currentDataObject.getDescription(); |
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551 String place = currentDataObject.getPlace(); |
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552 |
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553 if ( name.toLowerCase().contains(lowerCaseSearchString) || |
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554 description.toLowerCase().contains(lowerCaseSearchString) || |
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555 place.toLowerCase().contains(lowerCaseSearchString) ) |
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556 currentDataObject.setPercentage(1); |
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557 else |
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558 currentDataObject.setPercentage(0); |
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559 } |
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560 |
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561 updateView(false); |
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562 core.updateTimeAndMap(); |
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563 } |
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564 |
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565 /** |
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566 * Updates all cells of the actual page |
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567 * |
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568 * @param hover if there was a hover selection which caused to trigger this function |
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569 */ |
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|
570 public void updateView(boolean hover){ |
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571 if( !hover && this.viewAll == -1 ){ |
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572 showSelected.removeStyleName("selectedView"); |
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573 this.viewAll = 0; |
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574 } |
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575 |
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576 //redraw colors of elements (selected/unselected) |
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577 int start = this.elementsTable.getVisibleRange().getStart(); |
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578 for (int i=0; i<this.elementsTable.getPageSize(); i++) { |
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579 |
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580 if ((start+i) >= dataProvider.getList().size()) |
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581 break; |
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582 |
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583 DataObject object = dataProvider.getList().get(start+i); |
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584 |
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585 boolean selected = object.isSelected(); |
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586 if (hover) |
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587 selected = object.getHover(); |
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588 |
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589 double percentage = (new Double(object.getPercentage()).doubleValue()); |
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590 String borderColor = StiCore.getBorderColor(this.index,selected); |
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591 String cellColor = StiCore.getCellColor(this.index,percentage); |
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592 |
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593 //TODO: das RowElement ist ein TR. Das hat kein Border, weswegen es |
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594 //auch keine Farbe bekommt. Erst einmal allen sub-Elementen die |
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595 //border-Color geben. Das sollte verbessert werden, da DOM-Iterieren |
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596 //langsam ist. |
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597 |
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598 NodeList<TableCellElement> cells = this.elementsTable.getRowElement(i).getCells(); |
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599 |
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600 for (int cellIndex=0; cellIndex < cells.getLength(); cellIndex++){ |
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601 cells.getItem(cellIndex).getStyle().setBorderColor(borderColor); |
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602 } |
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603 |
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604 this.elementsTable.getRowElement(i).getStyle().setBorderColor(borderColor); |
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605 this.elementsTable.getRowElement(i).getStyle().setBackgroundColor(cellColor); |
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606 } |
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607 } |
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608 |
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609 public String getTermIdentifier() { |
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610 return this.dataSet.getTermIdentifier(); |
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611 } |
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612 |
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613 } |