Mercurial > hg > STI-GWT
annotate src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java @ 64:aa1808d94d80 CellTable
Make table always take 100% width, so page switches don't alter the layout
author | Sebastian Kruse <skruse@mpiwg-berlin.mpg.de> |
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date | Mon, 17 Dec 2012 13:28:49 +0100 |
parents | 3a7691d29566 |
children | 8b58d9bc0bb6 |
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.Style.Unit; |
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31 import com.google.gwt.dom.client.TableCellElement; |
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32 import com.google.gwt.event.dom.client.ClickHandler; |
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33 import com.google.gwt.event.dom.client.ClickEvent; |
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34 import com.google.gwt.event.dom.client.MouseOutEvent; |
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35 import com.google.gwt.event.dom.client.MouseOverEvent; |
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36 import com.google.gwt.event.dom.client.MouseOverHandler; |
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37 import com.google.gwt.event.dom.client.MouseOutHandler; |
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38 import com.google.gwt.http.client.URL; |
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39 |
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40 import econnect.wp3_3.client.core.ApplicationConstants; |
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41 import econnect.wp3_3.client.core.DataObject; |
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42 import econnect.wp3_3.client.core.DataSet; |
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43 import econnect.wp3_3.client.core.StiConstants; |
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44 import econnect.wp3_3.client.core.StiCore; |
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45 import econnect.wp3_3.client.services.ExportWriterInterface; |
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46 import econnect.wp3_3.client.services.ExportWriterInterfaceAsync; |
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47 |
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48 /** |
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49 * Implementation of a dynamic table for one dataset |
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50 */ |
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51 public class DynamicStiTable extends Grid { |
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52 |
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53 /** |
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54 * The maximum number of rows of the table |
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55 */ |
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56 private int maxRows = 10; |
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57 |
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58 /** |
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59 * The sti core component |
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60 */ |
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61 private StiCore core; |
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62 |
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63 /** |
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64 * The index of the dataset |
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65 */ |
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66 private int index; |
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67 |
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68 /** |
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69 * The dataset of this dynamic table |
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70 */ |
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71 private DataSet dataSet; |
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72 |
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73 /** |
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74 * ArrayList that holds all elements that can be shown |
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75 * (smaller than "dataSet" if showSelected) |
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76 */ |
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77 private ArrayList<DataObject> actualObjectSet; |
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78 |
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79 /** |
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80 * Provider that hands the data to the table |
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81 */ |
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82 private ListDataProvider<DataObject> dataProvider; |
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83 |
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84 /** |
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85 * CellTable which displays the data |
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86 */ |
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87 private CellTable<DataObject> elementsTable; |
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88 |
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89 /** |
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90 * The dataobjects, which are presented at the actual page |
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91 */ |
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92 //private DataObject[][] displayedObjects; |
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93 |
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94 /** |
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95 * The number-of-results label |
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96 */ |
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97 private Label results; |
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98 |
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99 /** |
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100 * The image for show selected elements |
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101 */ |
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102 private Image showSelected; |
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103 |
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104 /** |
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105 * The image for show all elements |
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106 */ |
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107 private Image showAll; |
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108 |
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109 /** |
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110 * This value tells the view status: 1 for showAll, -1 for showSelected, 0 otherwise |
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111 */ |
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112 private int viewAll = 1; |
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113 |
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114 /** |
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115 * Anchor that holds the URL for the KML download |
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116 */ |
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117 private Anchor aDownloadKML; |
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118 |
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119 /** |
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120 * RPC Interface for writing the KML file |
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121 */ |
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122 private ExportWriterInterfaceAsync exportWriter; |
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123 |
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124 /** |
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125 * Constructor for initialization of the dynamic table |
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126 * |
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127 * @param core object to allow interaction with all javascript components |
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128 * @param id id of the dataset |
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129 */ |
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130 public DynamicStiTable( StiCore stiCore, final int id ){ |
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131 |
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132 final ApplicationConstants constants = (ApplicationConstants) GWT.create(ApplicationConstants.class); |
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133 final StiConstants textConstants = (StiConstants) GWT.create(StiConstants.class); |
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134 |
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135 this.resize(2,1); |
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136 this.addStyleName("dataTable"); |
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137 this.addStyleName("center"); |
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138 |
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139 this.index = id; |
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140 this.core = stiCore; |
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141 this.dataSet = core.getDataSets().get(index); |
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142 this.actualObjectSet = new ArrayList<DataObject>(); |
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143 setActualObjectSet(); |
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144 |
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145 showAll = new Image("images/viewAll"+(core.getColorId(index))+".png"); |
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146 showAll.setTitle(textConstants.showAll()); |
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147 showSelected = new Image("images/viewSelected"+(core.getColorId(index))+".png"); |
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148 showSelected.setTitle(textConstants.showSelected()); |
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149 showAll.addStyleName("selectedView"); |
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150 showAll.addStyleName("view"); |
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151 showSelected.addStyleName("view"); |
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152 showAll.addClickHandler(new ClickHandler() { |
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153 public void onClick(ClickEvent event) { |
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154 if( viewAll != 1 ){ |
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155 showSelected.removeStyleName("selectedView"); |
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156 showAll.addStyleName("selectedView"); |
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157 viewAll = 1; |
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158 setActualObjectSet(); |
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159 } |
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160 } |
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161 }); |
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162 showSelected.addClickHandler(new ClickHandler() { |
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163 public void onClick(ClickEvent event) { |
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164 if( viewAll != -1 ){ |
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165 viewAll = -1; |
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166 if( setActualObjectSet() ){ |
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167 showAll.removeStyleName("selectedView"); |
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168 showSelected.addStyleName("selectedView"); |
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169 } |
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170 else { |
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171 viewAll = 1; |
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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 |
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177 Image storeSelected = new Image("images/storeSelected"+(core.getColorId(index))+".png"); |
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178 storeSelected.setTitle(textConstants.storeSelected()); |
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179 storeSelected.addStyleName("view"); |
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180 storeSelected.addClickHandler(new ClickHandler() { |
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181 public void onClick(ClickEvent event) { |
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182 core.storeSelected(id); |
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183 } |
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184 }); |
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185 |
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186 Grid showOptions = new Grid(1,3); |
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187 showOptions.setWidget(0,0,showAll); |
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188 showOptions.setWidget(0,1,showSelected); |
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189 showOptions.setWidget(0,2,storeSelected); |
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190 |
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191 final TextBox textualSearch = new TextBox(); |
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192 final Button search = new Button("go"); |
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193 final Image cancelImage = new Image(constants.cancelImage()); |
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194 final Image refineImage = new Image(constants.refineImage()); |
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195 final Grid buttons = new Grid(1,2); |
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196 buttons.setWidget(0, 0, refineImage); |
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197 buttons.setWidget(0, 1, cancelImage); |
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198 final Grid refine = new Grid(1,3); |
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199 refine.setWidget(0,0,textualSearch); |
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200 refine.setWidget(0,1,search); |
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201 search.addClickHandler(new ClickHandler() { |
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202 public void onClick(ClickEvent event) { |
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203 if( !textualSearch.getText().equals("") ){ |
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204 refineByText(textualSearch.getText()); |
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205 textualSearch.setEnabled(false); |
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206 refine.setWidget(0, 1, buttons); |
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207 } |
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208 } |
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209 }); |
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210 refineImage.addClickHandler(new ClickHandler() { |
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211 public void onClick(ClickEvent event) { |
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212 core.refine(); |
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213 } |
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214 }); |
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215 cancelImage.addClickHandler(new ClickHandler() { |
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216 public void onClick(ClickEvent event) { |
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217 textualSearch.setEnabled(true); |
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218 core.reset(); |
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219 |
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220 //TODO: das gibt es nun mehrfach im Code, sollte also in eine Funktion |
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221 //überfuhrt werden |
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222 showSelected.removeStyleName("selectedView"); |
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223 showAll.addStyleName("selectedView"); |
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224 viewAll = 1; |
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225 setActualObjectSet(); |
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226 |
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227 refine.setWidget(0, 1, search); |
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228 } |
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229 }); |
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230 |
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231 this.results = new Label(); |
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232 this.results.setStyleName("resultsLabel"); |
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233 |
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234 Label page = new Label(textConstants.page()+":"); |
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235 page.setStyleName("pageLabel"); |
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236 |
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237 //This anchor will hold the URL of the export-file |
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238 //for download from the ExportServlet |
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239 aDownloadKML = new Anchor("download KML"); |
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240 aDownloadKML.setVisible(false); |
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241 aDownloadKML.addClickHandler(new ClickHandler() { |
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242 public void onClick(ClickEvent event) { |
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243 aDownloadKML.setVisible(false); |
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244 } |
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245 }); |
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246 |
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247 Image export = new Image(constants.exportImage()); |
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248 export.addClickHandler(new ClickHandler() { |
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249 public void onClick(ClickEvent event) { |
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250 //create KML file |
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251 createKMLFile(); |
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252 } |
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253 }); |
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254 export.addStyleName("export"); |
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255 export.setTitle(textConstants.exportDataSet()); |
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256 |
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257 Image delete = new Image(constants.deleteImage()); |
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258 delete.addClickHandler(new ClickHandler() { |
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259 public void onClick(ClickEvent event) { |
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260 core.deleteDataSet(index); |
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261 } |
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262 }); |
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263 delete.addStyleName("delete"); |
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264 delete.setTitle(textConstants.deleteDataSet()); |
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265 |
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266 Grid func = new Grid(1,3); |
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267 |
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268 func.setWidget(0, 0, aDownloadKML); |
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269 func.setWidget(0, 1, export); |
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270 func.setWidget(0, 2, delete); |
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271 func.addStyleName("center"); |
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272 |
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273 this.elementsTable = new CellTable<DataObject>(); |
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274 elementsTable.getElement().getStyle().setWidth(100, Unit.PCT); |
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275 |
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276 dataProvider = new ListDataProvider<DataObject>(); |
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277 dataProvider.addDataDisplay(this.elementsTable); |
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278 |
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279 TextColumn<DataObject> nameColumn = new TextColumn<DataObject>() { |
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280 @Override |
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281 public String getValue(DataObject object) { |
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282 return object.getName(); |
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283 } |
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284 }; |
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285 nameColumn.setSortable(true); |
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286 this.elementsTable.addColumn(nameColumn, "Name"); |
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287 |
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288 TextColumn<DataObject> placeColumn = new TextColumn<DataObject>() { |
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289 @Override |
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290 public String getValue(DataObject object) { |
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291 return object.getPlace(); |
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292 } |
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293 }; |
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294 placeColumn.setSortable(true); |
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295 this.elementsTable.addColumn(placeColumn, "Place"); |
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296 |
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297 TextColumn<DataObject> descriptionColumn = new TextColumn<DataObject>() { |
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298 @Override |
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299 public String getValue(DataObject object) { |
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300 return object.getDescription(); |
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301 } |
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302 }; |
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303 descriptionColumn.setSortable(true); |
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304 this.elementsTable.addColumn(descriptionColumn, "Description"); |
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305 |
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306 SimplePager pager = new SimplePager(); |
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307 pager.setDisplay(this.elementsTable); |
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308 |
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309 dataProvider.setList(this.actualObjectSet); |
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310 |
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311 //The actual (at this time lexicographical) sorting routine. |
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312 //TODO: remove redundant code, make this more abstract |
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313 ListHandler<DataObject> columnSortHandler = new ListHandler<econnect.wp3_3.client.core.DataObject>(dataProvider.getList()); |
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314 columnSortHandler.setComparator(nameColumn, |
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315 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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316 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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317 if (o1 == o2) |
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318 return 0; |
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319 |
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320 if (o1 != null) |
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321 return (o2 != null) ? o1.getName().compareTo(o2.getName()) : 1; |
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322 |
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323 return -1; |
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324 } |
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325 }); |
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326 columnSortHandler.setComparator(placeColumn, |
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327 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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328 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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329 if (o1 == o2) |
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330 return 0; |
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331 |
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332 if (o1 != null) |
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333 return (o2 != null) ? o1.getPlace().compareTo(o2.getPlace()) : 1; |
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334 |
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335 return -1; |
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336 } |
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337 }); |
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338 columnSortHandler.setComparator(descriptionColumn, |
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339 new Comparator<econnect.wp3_3.client.core.DataObject>() { |
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340 public int compare(econnect.wp3_3.client.core.DataObject o1, econnect.wp3_3.client.core.DataObject o2) { |
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341 if (o1 == o2) |
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342 return 0; |
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343 |
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344 if (o1 != null) |
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345 return (o2 != null) ? o1.getDescription().compareTo(o2.getDescription()) : 1; |
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346 |
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347 return -1; |
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348 } |
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349 }); |
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350 this.elementsTable.addColumnSortHandler(columnSortHandler); |
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351 |
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352 //Redraw row colors on page change |
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353 this.elementsTable.addRangeChangeHandler(new RangeChangeEvent.Handler(){ |
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354 public void onRangeChange(RangeChangeEvent event){ |
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355 updateView(false); |
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356 } |
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357 }); |
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358 |
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359 this.elementsTable.setColumnWidth(nameColumn, "33%"); |
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360 this.elementsTable.setColumnWidth(placeColumn, "33%"); |
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361 this.elementsTable.setColumnWidth(descriptionColumn, "33%"); |
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362 |
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363 //This handler adds the hover-functionality to the table, |
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364 //basically highlighting of rows (and in the map/timeplot) |
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365 this.elementsTable.addCellPreviewHandler(new Handler<DataObject>() |
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366 { |
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367 //@Override |
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368 public void onCellPreview( |
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369 CellPreviewEvent<DataObject> event) |
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370 { |
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371 boolean wasChanged = false; |
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372 |
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373 if ("mouseover".equals(event.getNativeEvent().getType())) { |
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374 DataObject hoveredObject = event.getValue(); |
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375 |
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376 if (!hoveredObject.getHover()){ |
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377 hoveredObject.setHover(true); |
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378 |
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379 wasChanged = true; |
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380 } |
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381 } |
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382 else if ("mouseout".equals(event.getNativeEvent().getType())) { |
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383 DataObject hoveredObject = event.getValue(); |
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384 |
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385 if (hoveredObject.getHover()){ |
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386 hoveredObject.setHover(false); |
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387 |
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388 wasChanged = true; |
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389 } |
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390 } |
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391 else if ("click".equals(event.getNativeEvent().getType())) { |
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392 DataObject clickedObject = event.getValue(); |
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393 |
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394 if (clickedObject.getPercentage() > 0){ |
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395 clickedObject.setPercentage(0); |
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396 |
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397 } else { |
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398 clickedObject.setPercentage(1); |
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399 } |
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400 |
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401 wasChanged = true; |
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402 } |
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403 |
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404 if (wasChanged) { |
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405 updateView(true); |
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406 core.updateTimeAndMap(); |
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407 } |
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408 } |
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409 }); |
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410 |
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411 this.setWidget(1, 0, this.elementsTable); |
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412 |
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413 Grid tableControls = new Grid(1,5); |
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414 tableControls.setWidget(0,0,showOptions); |
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415 tableControls.setWidget(0,1,refine); |
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416 tableControls.setWidget(0,2,this.results); |
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417 tableControls.setWidget(0,3,pager); |
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418 tableControls.setWidget(0,4,func); |
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419 tableControls.setStyleName("tableControls"); |
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420 |
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421 this.setWidget(0, 0, tableControls); |
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422 |
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423 tableControls.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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424 |
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425 this.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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426 this.getCellFormatter().setHorizontalAlignment(1, 0, HasHorizontalAlignment.ALIGN_CENTER); |
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427 this.getCellFormatter().setWidth(1, 0, "100%"); |
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428 } |
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429 |
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430 /** |
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431 * Sets the actual object set; depends on the showAll and showSelected selection |
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432 * |
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433 * @return boolean value, if there are selected objects |
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434 */ |
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435 private boolean setActualObjectSet(){ |
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436 |
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437 boolean dataSetWasEmpty = false; |
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438 |
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439 if( viewAll == -1 ){ |
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440 |
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441 this.actualObjectSet.clear(); |
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442 |
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443 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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444 DataObject object = this.dataSet.getObjects().get(i); |
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445 if( object.isSelected() ){ |
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446 this.actualObjectSet.add(object); |
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447 } |
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448 } |
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449 if( this.actualObjectSet.size() == 0 ){ |
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450 //TODO: Wenn die derzeitige Auswahl _keine_ Elemente |
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451 //enthält, werden _alle_ angezeigt. Ist das sinnvoll? |
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452 dataSetWasEmpty = true; |
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453 this.viewAll = 1; |
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454 } |
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455 } |
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456 if( this.viewAll == 1 ){ |
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457 this.actualObjectSet.clear(); |
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458 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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459 this.actualObjectSet.add(this.dataSet.getObjects().get(i)); |
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460 } |
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461 } |
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462 |
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463 //if the dataProvider already exists, refresh the |
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464 //displayed data |
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465 if (this.dataProvider != null) { |
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466 |
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467 //refresh data |
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468 this.dataProvider.refresh(); |
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469 this.elementsTable.setRowCount(this.actualObjectSet.size()); |
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470 |
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471 this.updateView(false); |
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472 } |
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473 |
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474 if (dataSetWasEmpty) |
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475 return false; |
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476 else |
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477 return true; |
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478 } |
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479 |
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480 /** |
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481 * Creates a (preliminary) KML file from the data in the current data set |
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482 */ |
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483 private void createKMLFile(){ |
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484 String kmlContent = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><kml xmlns=\"http://www.opengis.net/kml/2.2\"><Document>"; |
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485 |
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486 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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487 DataObject currentDataObject = this.dataSet.getObjects().get(i); |
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488 |
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489 String name = currentDataObject.getName(); |
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490 String description = currentDataObject.getDescription(); |
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491 String place = currentDataObject.getPlace(); |
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492 String lat = currentDataObject.getLat(); |
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493 String lon = currentDataObject.getLon(); |
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494 String timeStamp = currentDataObject.getTimeStamp(); |
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495 String timeSpanStart = currentDataObject.getTimeSpanStart(); |
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496 String timeSpanEnd = currentDataObject.getTimeSpanEnd(); |
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497 |
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498 String kmlEntry = "<Placemark>"; |
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499 |
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500 kmlEntry += "<name><![CDATA[" + name + "]]></name>"; |
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501 kmlEntry += "<address><![CDATA[" + place + "]]></address>"; |
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502 kmlEntry += "<description><![CDATA[" + description + "]]></description>"; |
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503 kmlEntry += "<Point><coordinates>" + lon + "," + lat + "</coordinates></Point>"; |
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504 |
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505 if ( (timeStamp != null) && (timeStamp != "undefined") ) { |
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506 kmlEntry += "<TimeStamp><when>" + timeStamp + "</when></TimeStamp>"; |
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507 } else { |
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508 kmlEntry += "<TimeSpan><begin>" + timeSpanStart + "</begin><end>" + timeSpanEnd + "</end></TimeSpan>"; |
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509 } |
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510 |
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511 kmlEntry += "</Placemark>"; |
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512 |
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513 kmlContent += kmlEntry; |
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514 } |
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515 |
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516 kmlContent += "</Document></kml>"; |
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517 |
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518 exportWriter = GWT.create(ExportWriterInterface.class); |
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519 |
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520 exportWriter.writeKMLFile(kmlContent, |
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521 new AsyncCallback<String>() { |
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522 public void onFailure(Throwable caught) { |
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523 //TODO: error message in layover? |
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524 //there needs to be an error-window for KML parser failures anyway |
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525 //this one should be used |
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526 int i = 1; |
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527 } |
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528 public void onSuccess(String exportFileName) { |
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529 |
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530 String url = GWT.getModuleBaseURL(); |
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531 url = url + "ExportServlet?ExportedFilename=" + URL.encode(exportFileName); |
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532 |
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533 aDownloadKML.setHref(url); |
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534 aDownloadKML.setVisible(true); |
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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 |
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540 /** |
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541 * Refines the currently selected dataset (table) by the search term entered. |
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542 * |
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543 */ |
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544 private void refineByText(String searchString){ |
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545 |
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546 String lowerCaseSearchString = searchString.toLowerCase(); |
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547 |
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548 for( int i=0; i<this.dataSet.getObjects().length(); i++){ |
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549 DataObject currentDataObject = this.dataSet.getObjects().get(i); |
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550 |
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551 String name = currentDataObject.getName(); |
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552 String description = currentDataObject.getDescription(); |
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553 String place = currentDataObject.getPlace(); |
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554 |
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555 if ( name.toLowerCase().contains(lowerCaseSearchString) || |
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556 description.toLowerCase().contains(lowerCaseSearchString) || |
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557 place.toLowerCase().contains(lowerCaseSearchString) ) |
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558 currentDataObject.setPercentage(1); |
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559 else |
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560 currentDataObject.setPercentage(0); |
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561 } |
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562 |
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563 updateView(false); |
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564 core.updateTimeAndMap(); |
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565 } |
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566 |
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567 /** |
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568 * Updates all cells of the actual page |
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569 * |
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570 * @param hover if there was a hover selection which caused to trigger this function |
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571 */ |
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572 public void updateView(boolean hover){ |
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573 if( !hover && this.viewAll == -1 ){ |
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574 showSelected.removeStyleName("selectedView"); |
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575 this.viewAll = 0; |
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576 } |
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577 |
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578 //redraw colors of elements (selected/unselected) |
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579 int start = this.elementsTable.getVisibleRange().getStart(); |
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580 for (int i=0; i<this.elementsTable.getPageSize(); i++) { |
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581 |
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582 if ((start+i) >= dataProvider.getList().size()) |
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583 break; |
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584 |
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585 DataObject object = dataProvider.getList().get(start+i); |
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586 |
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587 boolean selected = object.isSelected(); |
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588 if (hover) |
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589 selected = object.getHover(); |
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590 |
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591 double percentage = (new Double(object.getPercentage()).doubleValue()); |
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592 String borderColor = StiCore.getBorderColor(this.index,selected); |
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593 String cellColor = StiCore.getCellColor(this.index,percentage); |
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594 |
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595 //TODO: das RowElement ist ein TR. Das hat kein Border, weswegen es |
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596 //auch keine Farbe bekommt. Erst einmal allen sub-Elementen die |
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597 //border-Color geben. Das sollte verbessert werden, da DOM-Iterieren |
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598 //langsam ist. |
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599 |
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600 NodeList<TableCellElement> cells = this.elementsTable.getRowElement(i).getCells(); |
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601 |
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602 for (int cellIndex=0; cellIndex < cells.getLength(); cellIndex++){ |
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603 cells.getItem(cellIndex).getStyle().setBorderColor(borderColor); |
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604 } |
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605 |
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606 this.elementsTable.getRowElement(i).getStyle().setBorderColor(borderColor); |
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607 this.elementsTable.getRowElement(i).getStyle().setBackgroundColor(cellColor); |
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608 } |
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609 } |
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610 |
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611 public String getTermIdentifier() { |
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612 return this.dataSet.getTermIdentifier(); |
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613 } |
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614 |
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615 } |