Mercurial > hg > STI-GWT

annotate src/econnect/wp3_3/client/widgets/table/DynamicStiTable.java @ 47:e86fc5c5d386 CellTable

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comment: added explanation
author Sebastian Kruse <skruse@mpiwg-berlin.mpg.de>
date Mon, 10 Dec 2012 14:01:39 +0100
parents a8741feea7c6
children 169bf48359e2
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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.List;
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6 import com.google.gwt.user.cellview.client.CellTable;
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7 import com.google.gwt.user.cellview.client.SimplePager;
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8 import com.google.gwt.user.cellview.client.TextColumn;
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9 import com.google.gwt.user.client.rpc.AsyncCallback;
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10 import com.google.gwt.user.client.ui.Anchor;
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11 import com.google.gwt.user.client.ui.Button;
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12 import com.google.gwt.user.client.ui.FormPanel;
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13 import com.google.gwt.user.client.ui.Grid;
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14 import com.google.gwt.user.client.ui.Hidden;
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15 import com.google.gwt.user.client.ui.Image;
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16 import com.google.gwt.user.client.ui.Label;
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17 import com.google.gwt.user.client.ui.HTML;
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18 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
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19 import com.google.gwt.user.client.ui.TextBox;
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20 import com.google.gwt.view.client.ListDataProvider;
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21 import com.google.gwt.view.client.Range;
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22 import com.google.gwt.core.client.GWT;
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23 import com.google.gwt.dom.client.NodeList;
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24 import com.google.gwt.dom.client.Style.BorderStyle;
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25 import com.google.gwt.dom.client.TableCellElement;
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26 import com.google.gwt.event.dom.client.ClickHandler;
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27 import com.google.gwt.event.dom.client.ClickEvent;
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28 import com.google.gwt.event.dom.client.MouseOutEvent;
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29 import com.google.gwt.event.dom.client.MouseOverEvent;
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30 import com.google.gwt.event.dom.client.MouseOverHandler;
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31 import com.google.gwt.event.dom.client.MouseOutHandler;
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32 import com.google.gwt.http.client.URL;
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34 import econnect.wp3_3.client.core.ApplicationConstants;
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35 import econnect.wp3_3.client.core.DataObject;
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36 import econnect.wp3_3.client.core.DataSet;
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37 import econnect.wp3_3.client.core.StiConstants;
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38 import econnect.wp3_3.client.core.StiCore;
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39 import econnect.wp3_3.client.services.ExportWriterInterface;
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40 import econnect.wp3_3.client.services.ExportWriterInterfaceAsync;
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42 /**
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43 * Implementation of a dynamic table for one dataset
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44 */
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45 public class DynamicStiTable extends Grid {
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47 /**
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48 * The maximum number of rows of the table
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49 */
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50 private int maxRows = 10;
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51
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52 /**
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53 * The sti core component
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54 */
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55 private StiCore core;
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56
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57 /**
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58 * The index of the dataset
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59 */
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60 private int index;
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61
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62 /**
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63 * The dataset of this dynamic table
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64 */
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65 private DataSet dataSet;
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66
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67 /**
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68 * ArrayList that holds all elements that can be shown
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69 * (smaller than "dataSet" if showSelected)
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70 */
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71 private ArrayList<DataObject> actualObjectSet;
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72
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73 /**
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74 * Provider that hands the data to the table
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75 */
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76 private ListDataProvider<DataObject> dataProvider;
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77
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78 /**
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79 * CellTable which displays the data
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80 */
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81 private CellTable<DataObject> elementsTable;
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82
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83 /**
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84 * The dataobjects, which are presented at the actual page
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85 */
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86 //private DataObject[][] displayedObjects;
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87
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88 /**
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89 * The number-of-results label
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90 */
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91 private Label results;
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93 /**
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94 * The image for show selected elements
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95 */
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96 private Image showSelected;
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98 /**
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99 * The image for show all elements
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100 */
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101 private Image showAll;
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102
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103 /**
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104 * This value tells the view status: 1 for showAll, -1 for showSelected, 0 otherwise
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105 */
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106 private int viewAll = 1;
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107
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108 /**
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109 * Anchor that holds the URL for the KML download
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110 */
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111 private Anchor aDownloadKML;
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112
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113 /**
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114 * RPC Interface for writing the KML file
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115 */
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116 private ExportWriterInterfaceAsync exportWriter;
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117
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118 /**
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119 * Constructor for initialization of the dynamic table
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120 *
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121 * @param core object to allow interaction with all javascript components
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122 * @param id id of the dataset
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123 */
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124 public DynamicStiTable( StiCore stiCore, final int id ){
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125
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126 final ApplicationConstants constants = (ApplicationConstants) GWT.create(ApplicationConstants.class);
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127 final StiConstants textConstants = (StiConstants) GWT.create(StiConstants.class);
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128
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129 this.resize(2,1);
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130 this.addStyleName("dataTable");
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131 this.addStyleName("center");
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132
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133 this.index = id;
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134 this.core = stiCore;
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135 this.dataSet = core.getDataSets().get(index);
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136 this.actualObjectSet = new ArrayList<DataObject>();
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137 setActualObjectSet();
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138
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139 showAll = new Image("images/viewAll"+(core.getColorId(index))+".png");
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140 showAll.setTitle(textConstants.showAll());
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141 showSelected = new Image("images/viewSelected"+(core.getColorId(index))+".png");
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142 showSelected.setTitle(textConstants.showSelected());
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143 showAll.addStyleName("selectedView");
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144 showAll.addStyleName("view");
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145 showSelected.addStyleName("view");
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146 showAll.addClickHandler(new ClickHandler() {
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147 public void onClick(ClickEvent event) {
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148 if( viewAll != 1 ){
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149 showSelected.removeStyleName("selectedView");
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150 showAll.addStyleName("selectedView");
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151 viewAll = 1;
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152 setActualObjectSet();
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153 }
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154 }
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155 });
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156 showSelected.addClickHandler(new ClickHandler() {
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157 public void onClick(ClickEvent event) {
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158 if( viewAll != -1 ){
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159 viewAll = -1;
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160 if( setActualObjectSet() ){
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161 showAll.removeStyleName("selectedView");
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162 showSelected.addStyleName("selectedView");
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163 }
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164 else {
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165 viewAll = 1;
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166 }
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167 }
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168 }
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169 });
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170
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171 Image storeSelected = new Image("images/storeSelected"+(core.getColorId(index))+".png");
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172 storeSelected.setTitle(textConstants.storeSelected());
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173 storeSelected.addStyleName("view");
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174 storeSelected.addClickHandler(new ClickHandler() {
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175 public void onClick(ClickEvent event) {
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176 core.storeSelected(id);
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177 }
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178 });
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179
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180 Grid showOptions = new Grid(1,3);
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181 showOptions.setWidget(0,0,showAll);
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182 showOptions.setWidget(0,1,showSelected);
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183 showOptions.setWidget(0,2,storeSelected);
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184
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185 final TextBox textualSearch = new TextBox();
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186 final Button search = new Button("go");
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187 final Image cancelImage = new Image(constants.cancelImage());
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188 final Image refineImage = new Image(constants.refineImage());
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189 final Grid buttons = new Grid(1,2);
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190 buttons.setWidget(0, 0, refineImage);
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191 buttons.setWidget(0, 1, cancelImage);
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192 final Grid refine = new Grid(1,3);
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193 refine.setWidget(0,0,textualSearch);
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194 refine.setWidget(0,1,search);
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195 search.addClickHandler(new ClickHandler() {
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196 public void onClick(ClickEvent event) {
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197 if( !textualSearch.getText().equals("") ){
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198 refineByText(textualSearch.getText());
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199 textualSearch.setEnabled(false);
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200 refine.setWidget(0, 1, buttons);
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201 }
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202 }
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203 });
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204 refineImage.addClickHandler(new ClickHandler() {
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205 public void onClick(ClickEvent event) {
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206 core.refine();
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207 }
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208 });
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209 cancelImage.addClickHandler(new ClickHandler() {
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210 public void onClick(ClickEvent event) {
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211 textualSearch.setEnabled(true);
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212 core.reset();
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213
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214 //TODO: das gibt es nun mehrfach im Code, sollte also in eine Funktion
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215 //überfuhrt werden
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216 showSelected.removeStyleName("selectedView");
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217 showAll.addStyleName("selectedView");
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218 viewAll = 1;
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219 setActualObjectSet();
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220
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221 refine.setWidget(0, 1, search);
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222 }
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223 });
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224
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225 this.results = new Label();
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226 this.results.setStyleName("resultsLabel");
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227
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228 Label page = new Label(textConstants.page()+":");
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229 page.setStyleName("pageLabel");
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230
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231 //This anchor will hold the URL of the export-file
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232 //for download from the ExportServlet
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233 aDownloadKML = new Anchor("download KML");
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234 aDownloadKML.setVisible(false);
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235 aDownloadKML.addClickHandler(new ClickHandler() {
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236 public void onClick(ClickEvent event) {
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237 aDownloadKML.setVisible(false);
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238 }
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239 });
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240
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241 Image export = new Image(constants.exportImage());
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242 export.addClickHandler(new ClickHandler() {
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243 public void onClick(ClickEvent event) {
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244 //create KML file
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245 createKMLFile();
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246 }
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247 });
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248 export.addStyleName("export");
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249 export.setTitle(textConstants.exportDataSet());
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250
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251 Image delete = new Image(constants.deleteImage());
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252 delete.addClickHandler(new ClickHandler() {
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253 public void onClick(ClickEvent event) {
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254 core.deleteDataSet(index);
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255 }
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256 });
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257 delete.addStyleName("delete");
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258 delete.setTitle(textConstants.deleteDataSet());
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259
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260 Grid func = new Grid(1,3);
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261
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262 func.setWidget(0, 0, aDownloadKML);
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263 func.setWidget(0, 1, export);
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264 func.setWidget(0, 2, delete);
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265 func.addStyleName("center");
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266
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267 this.elementsTable = new CellTable<DataObject>();
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268
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269 dataProvider = new ListDataProvider<DataObject>();
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270 dataProvider.addDataDisplay(this.elementsTable);
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271
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272 TextColumn<DataObject> nameColumn = new TextColumn<DataObject>() {
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273 @Override
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274 public String getValue(DataObject object) {
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275 return object.getName();
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276 }
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277
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278 };
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279
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280 this.elementsTable.addColumn(nameColumn);
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281
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282 SimplePager pager = new SimplePager();
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283 pager.setDisplay(this.elementsTable);
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284
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285 dataProvider.setList(this.actualObjectSet);
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286
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287 this.setWidget(1, 0, this.elementsTable);
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288
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289 Grid tableControls = new Grid(1,5);
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290 tableControls.setWidget(0,0,showOptions);
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291 tableControls.setWidget(0,1,refine);
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292 tableControls.setWidget(0,2,this.results);
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293 tableControls.setWidget(0,3,pager);
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294 tableControls.setWidget(0,4,func);
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295 tableControls.setStyleName("tableControls");
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296
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297 this.setWidget(0, 0, tableControls);
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298
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299 tableControls.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER);
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300
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301 this.getCellFormatter().setHorizontalAlignment(0, 0, HasHorizontalAlignment.ALIGN_CENTER);
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302 this.getCellFormatter().setHorizontalAlignment(1, 0, HasHorizontalAlignment.ALIGN_CENTER);
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303 this.getCellFormatter().setWidth(1, 0, "100%");
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304 }
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305
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306 /**
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307 * Sets the actual object set; depends on the showAll and showSelected selection
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308 *
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309 * @return boolean value, if there are selected objects
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310 */
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311 private boolean setActualObjectSet(){
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312
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313 boolean dataSetWasEmpty = false;
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314
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315 if( viewAll == -1 ){
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316
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317 this.actualObjectSet.clear();
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318
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319 for( int i=0; i<this.dataSet.getObjects().length(); i++){
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320 DataObject object = this.dataSet.getObjects().get(i);
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321 if( object.isSelected() ){
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322 this.actualObjectSet.add(object);
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323 }
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324 }
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325 if( this.actualObjectSet.size() == 0 ){
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326 //TODO: Wenn die derzeitige Auswahl _keine_ Elemente
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327 //enthält, werden _alle_ angezeigt. Ist das sinnvoll?
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328 dataSetWasEmpty = true;
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329 this.viewAll = 1;
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330 }
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331 }
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332 if( this.viewAll == 1 ){
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333 this.actualObjectSet.clear();
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334 for( int i=0; i<this.dataSet.getObjects().length(); i++){
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335 this.actualObjectSet.add(this.dataSet.getObjects().get(i));
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336 }
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337 }
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338
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339 //if the dataProvider already exists, refresh the
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340 //displayed data
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341 if (this.dataProvider != null) {
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342
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343 //refresh data
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344 this.dataProvider.refresh();
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345 this.elementsTable.setRowCount(this.actualObjectSet.size());
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346
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347 this.updateView(false);
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348 }
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349
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350 if (dataSetWasEmpty)
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351 return false;
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352 else
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353 return true;
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354 }
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355
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356 /**
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357 * Creates a (preliminary) KML file from the data in the current data set
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358 */
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359 private void createKMLFile(){
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360 String kmlContent = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><kml xmlns=\"http://www.opengis.net/kml/2.2\"><Document>";
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361
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362 for( int i=0; i<this.dataSet.getObjects().length(); i++){
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363 DataObject currentDataObject = this.dataSet.getObjects().get(i);
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364
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365 String name = currentDataObject.getName();
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366 String description = currentDataObject.getDescription();
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367 String place = currentDataObject.getPlace();
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368 String lat = currentDataObject.getLat();
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369 String lon = currentDataObject.getLon();
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370 String timeStamp = currentDataObject.getTimeStamp();
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371 String timeSpanStart = currentDataObject.getTimeSpanStart();
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372 String timeSpanEnd = currentDataObject.getTimeSpanEnd();
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373
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374 String kmlEntry = "<Placemark>";
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375
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376 kmlEntry += "<name><![CDATA[" + name + "]]></name>";
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377 kmlEntry += "<address><![CDATA[" + place + "]]></address>";
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378 kmlEntry += "<description><![CDATA[" + description + "]]></description>";
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379 kmlEntry += "<Point><coordinates>" + lon + "," + lat + "</coordinates></Point>";
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380
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381 if ( (timeStamp != null) && (timeStamp != "undefined") ) {
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382 kmlEntry += "<TimeStamp><when>" + timeStamp + "</when></TimeStamp>";
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383 } else {
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384 kmlEntry += "<TimeSpan><begin>" + timeSpanStart + "</begin><end>" + timeSpanEnd + "</end></TimeSpan>";
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385 }
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386
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387 kmlEntry += "</Placemark>";
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388
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389 kmlContent += kmlEntry;
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390 }
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391
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392 kmlContent += "</Document></kml>";
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393
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394 exportWriter = GWT.create(ExportWriterInterface.class);
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395
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396 exportWriter.writeKMLFile(kmlContent,
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397 new AsyncCallback<String>() {
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398 public void onFailure(Throwable caught) {
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399 //TODO: error message in layover?
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400 //there needs to be an error-window for KML parser failures anyway
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401 //this one should be used
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402 int i = 1;
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403 }
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404 public void onSuccess(String exportFileName) {
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405
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406 String url = GWT.getModuleBaseURL();
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407 url = url + "ExportServlet?ExportedFilename=" + URL.encode(exportFileName);
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408
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409 aDownloadKML.setHref(url);
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410 aDownloadKML.setVisible(true);
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411 }
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412 }
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413 );
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414 }
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415
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416 /**
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417 * Refines the currently selected dataset (table) by the search term entered.
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418 *
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419 */
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420 private void refineByText(String searchString){
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421
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422 String lowerCaseSearchString = searchString.toLowerCase();
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423
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424 for( int i=0; i<this.dataSet.getObjects().length(); i++){
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425 DataObject currentDataObject = this.dataSet.getObjects().get(i);
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426
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427 String name = currentDataObject.getName();
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parents: 27
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428 String description = currentDataObject.getDescription();
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parents: 27
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429 String place = currentDataObject.getPlace();
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parents: 27
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430
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parents: 27
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431 if ( name.toLowerCase().contains(lowerCaseSearchString) ||
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432 description.toLowerCase().contains(lowerCaseSearchString) ||
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parents: 27
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433 place.toLowerCase().contains(lowerCaseSearchString) )
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parents: 27
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434 currentDataObject.setPercentage(1);
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parents: 27
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435 else
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parents: 27
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436 currentDataObject.setPercentage(0);
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parents: 27
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437 }
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parents: 27
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438
45
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parents: 43
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439 updateView(false);
3
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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440 }
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parents:
diff changeset
441
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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442 /**
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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443 * Updates all cells of the actual page
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StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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444 *
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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445 * @param hover if there was a hover selection which caused to trigger this function
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parents:
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446 */
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parents:
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447 public void updateView(boolean hover){
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448 if( !hover && this.viewAll == -1 ){
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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449 showSelected.removeStyleName("selectedView");
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StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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450 this.viewAll = 0;
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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451 }
45
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parents: 43
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452
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parents: 43
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453 //redraw colors of elements (selected/unselected)
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parents: 43
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454 int start = this.elementsTable.getVisibleRange().getStart();
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parents: 43
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455 for (int i=0; i<this.elementsTable.getPageSize(); i++) {
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456
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457 if ((start+i) >= dataProvider.getList().size())
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458 break;
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459
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460 DataObject object = dataProvider.getList().get(start+i);
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461
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462 boolean selected = object.isSelected();
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463 if (hover)
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464 selected = object.getHover();
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465
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466 double percentage = (new Double(object.getPercentage()).doubleValue());
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parents: 43
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467 String borderColor = StiCore.getBorderColor(this.index,selected);
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parents: 43
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468 String cellColor = StiCore.getCellColor(this.index,percentage);
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parents: 43
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469
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470 //TODO: das RowElement ist ein TR. Das hat kein Border, weswegen es
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parents: 43
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471 //auch keine Farbe bekommt. Erst einmal allen sub-Elementen die
47
e86fc5c5d386 comment: added explanation
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parents: 46
diff changeset
472 //border-Color geben. Das sollte verbessert werden, da DOM-Iterieren
e86fc5c5d386 comment: added explanation
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parents: 46
diff changeset
473 //langsam ist.
45
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parents: 43
diff changeset
474
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parents: 43
diff changeset
475 NodeList<TableCellElement> cells = this.elementsTable.getRowElement(i).getCells();
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parents: 43
diff changeset
476
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parents: 43
diff changeset
477 for (int cellIndex=0; cellIndex < cells.getLength(); cellIndex++){
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parents: 43
diff changeset
478 cells.getItem(cellIndex).getStyle().setBorderColor(borderColor);
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cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
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parents:
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479 }
45
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480
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parents: 43
diff changeset
481 this.elementsTable.getRowElement(i).getStyle().setBorderColor(borderColor);
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parents: 43
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482 this.elementsTable.getRowElement(i).getStyle().setBackgroundColor(cellColor);
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parents: 43
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483 }
3
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
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parents:
diff changeset
484 }
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
diff changeset
485
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
diff changeset
486 public String getTermIdentifier() {
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487 return this.dataSet.getTermIdentifier();
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
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488 }
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
parents:
diff changeset
489
cf06b77a8bbd Committed branch of the e4D repos sti-gwt branch 16384.
StefanFunk <StefanFunk@f2b5be40-def6-11e0-8a09-b3c1cc336c6b>
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490 }