Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/LocationDistancePanel.java @ 59:a3d235c63195

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Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception. flys-client/trunk@1519 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 18 Mar 2011 13:45:34 +0000
parents d018995fbee7
children 4784ca718476
rev   line source
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1 package de.intevation.flys.client.client.ui;
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2
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3 import java.util.LinkedHashMap;
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4 import java.util.List;
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5
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6 import com.google.gwt.core.client.GWT;
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7
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8 import com.smartgwt.client.widgets.Canvas;
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9 import com.smartgwt.client.widgets.Label;
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10 import com.smartgwt.client.widgets.form.DynamicForm;
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11 import com.smartgwt.client.widgets.form.fields.events.BlurHandler;
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12 import com.smartgwt.client.widgets.form.fields.events.BlurEvent;
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13 import com.smartgwt.client.widgets.form.fields.events.ChangeHandler;
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14 import com.smartgwt.client.widgets.form.fields.events.ChangeEvent;
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15 import com.smartgwt.client.widgets.form.fields.FormItem;
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16 import com.smartgwt.client.widgets.form.fields.RadioGroupItem;
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17 import com.smartgwt.client.widgets.layout.HLayout;
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18 import com.smartgwt.client.widgets.layout.VLayout;
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20 import de.intevation.flys.client.shared.model.Data;
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21 import de.intevation.flys.client.shared.model.DataItem;
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22 import de.intevation.flys.client.shared.model.DataList;
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23 import de.intevation.flys.client.shared.model.DefaultData;
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24 import de.intevation.flys.client.shared.model.DefaultDataItem;
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25 import de.intevation.flys.client.client.FLYSMessages;
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28 /**
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29 * This UIProvider creates a widget to enter locations or a distance.
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30 *
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31 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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32 */
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33 public class LocationDistancePanel
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34 extends AbstractUIProvider
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35 implements ChangeHandler, BlurHandler
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36 {
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37 /** The message class that provides i18n strings.*/
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38 protected FLYSMessages MESSAGES = GWT.create(FLYSMessages.class);
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41 /** The constant name of the input field to enter locations.*/
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42 public static final String FIELD_LOCATION = "location";
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44 /** The constant name of the input field to enter distance.*/
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45 public static final String FIELD_DISTANCE = "distance";
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47 /** The constant name of the input field to enter the start of a distance.*/
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48 public static final String FIELD_FROM = "from";
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50 /** The constant name of the input field to enter the end of a distance.*/
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51 public static final String FIELD_TO = "to";
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53 /** The constant name of the input field to enter the step width of a
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54 * distance.*/
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55 public static final String FIELD_WIDTH = "width";
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57 public static final int WIDTH = 250;
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60 /** The radio group for input mode selection.*/
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61 protected DynamicForm mode;
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63 /** A container that will contain the location or the distance panel.*/
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64 protected HLayout container;
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65
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66 /** The min value for a distance.*/
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67 protected double min;
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68
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69 /** The max value for a distance.*/
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70 protected double max;
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71
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72 /** The 'from' value entered in the distance mode.*/
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73 protected double from;
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75 /** The 'to' value entered in the distance mode.*/
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76 protected double to;
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78 /** The 'step' value entered in the distance mode.*/
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79 protected double step;
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81 /** The values entered in the location mode.*/
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82 protected double[] values;
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84
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85 /**
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86 * Creates a new LocationDistancePanel instance.
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87 */
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88 public LocationDistancePanel() {
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89 }
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91
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92 /**
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93 * This method creates a widget that contains a label, a panel with
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94 * checkboxes to switch the input mode between location and distance input,
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95 * and a the mode specific panel.
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96 *
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97 * @param data The data that might be inserted.
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98 *
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99 * @return a panel.
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100 */
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101 public Canvas create(DataList data) {
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102 VLayout layout = new VLayout();
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103
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104 initDefaults(data);
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105
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106 Label label = new Label(MESSAGES.location_distance_state());
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107 Canvas widget = createWidget(data);
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108 Canvas submit = getNextButton();
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109
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110 label.setHeight(25);
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111
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112 layout.addMember(label);
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113 layout.addMember(widget);
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114 layout.addMember(submit);
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115
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116 return layout;
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117 }
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118
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119
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120 public Canvas createOld(DataList dataList) {
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121 List<Data> items = dataList.getAll();
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122
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123 Data dFrom = getData(items, "ld_from");
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124 Data dTo = getData(items, "ld_to");
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125 Data dStep = getData(items, "ld_step");
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126
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127 DataItem[] from = dFrom.getItems();
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128 DataItem[] to = dTo.getItems();
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129 DataItem[] step = dStep.getItems();
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130
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131 HLayout layout = new HLayout();
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132 Label label = new Label(dataList.getLabel());
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133
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134 label.setWidth("50%");
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135
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136 StringBuilder sb = new StringBuilder();
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137 sb.append(from[0].getLabel());
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138 sb.append(" " + MESSAGES.unitFrom() + " ");
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139 sb.append(to[0].getLabel());
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140 sb.append(" " + MESSAGES.unitTo() + " ");
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141 sb.append(step[0].getLabel());
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142 sb.append(" " + MESSAGES.unitWidth());
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143
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144 Canvas back = getBackButton(dataList.getState());
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145
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146 layout.addMember(label);
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147 layout.addMember(new Label(sb.toString()));
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148 layout.addMember(back);
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149
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150 return layout;
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151 }
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152
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153
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154 /**
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155 * This method reads the default values defined in the DataItems of the Data
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156 * objects in <i>list</i>.
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157 *
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158 * @param list The DataList container that stores the Data objects.
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159 */
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160 protected void initDefaults(DataList list) {
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161 Data f = getData(list.getAll(), "ld_from");
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162 Data t = getData(list.getAll(), "ld_to");
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163 Data s = getData(list.getAll(), "ld_step");
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164
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165 DataItem[] fItems = f.getItems();
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166 DataItem[] tItems = t.getItems();
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167 DataItem[] sItems = s.getItems();
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168
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169 min = Double.valueOf(fItems[0].getStringValue());
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170 max = Double.valueOf(tItems[0].getStringValue());
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171 step = Double.valueOf(sItems[0].getStringValue());
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172
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173 this.from = min;
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174 this.to = max;
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175 this.step = step;
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176 }
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177
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178
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179 /**
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180 * This method greps the Data with name <i>name</i> from the list and
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181 * returns it.
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182 *
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183 * @param items A list of Data.
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184 * @param name The name of the Data that we are searching for.
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185 *
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186 * @return the Data with the name <i>name</i>.
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187 */
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188 protected Data getData(List<Data> data, String name) {
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189 for (Data d: data) {
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190 if (name.equals(d.getLabel())) {
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191 return d;
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192 }
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193 }
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194
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195 return null;
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196 }
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197
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198
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199 protected Canvas createWidget(DataList data) {
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200 VLayout layout = new VLayout();
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201 container = new HLayout();
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202 Canvas checkboxPanel = createRadioButtonPanel();
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203
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204 // the initial view will display the location input mode
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205 Canvas locationPanel = new DoubleArrayPanel(
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206 MESSAGES.unitLocation(),
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207 getLocationValues(),
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208 this);
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209 container.addMember(locationPanel);
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210
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211 layout.addMember(checkboxPanel);
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212 layout.addMember(container);
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213
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214 // TODO Add a table on the right to select locations by mouse click
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215
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216 return layout;
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217 }
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218
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219
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220 /**
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221 * This method returns the selected data.
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222 *
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223 * @return the selected/inserted data.
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224 */
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225 public Data[] getData() {
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226 // XXX If we have entered a value and click right afterwards on the
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227 // 'next' button, the BlurEvent is not fired, and the values are not
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228 // saved. So, we gonna save those values explicitly.
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229 if (isLocationMode()) {
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230 Canvas member = container.getMember(0);
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231 if (member instanceof DoubleArrayPanel) {
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232 DoubleArrayPanel form = (DoubleArrayPanel) member;
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233 saveLocationValues(form);
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234 }
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235 }
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236 else {
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237 Canvas member = container.getMember(0);
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238 if (member instanceof DoubleRangePanel) {
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239 DoubleRangePanel form = (DoubleRangePanel) member;
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240 saveDistanceValues(form);
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241 }
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242 }
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243
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244 return new Data[] { getDataFrom(), getDataTo(), getDataStep() };
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245 }
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246
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247
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248 /**
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249 * Returns the Data object for the 'from' attribute.
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250 *
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251 * @return the Data object for the 'from' attribute.
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252 */
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253 protected Data getDataFrom() {
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254 String value = Double.valueOf(getFinalFrom()).toString();
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255 DataItem item = new DefaultDataItem("ld_from", "ld_from", value);
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256 return new DefaultData(
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257 "ld_from", null, null, new DataItem[] { item });
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258 }
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259
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260
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261 /**
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262 * Returns the Data object for the 'to' attribute.
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263 *
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264 * @return the Data object for the 'to' attribute.
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265 */
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266 protected Data getDataTo() {
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267 String value = Double.valueOf(getFinalTo()).toString();
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268 DataItem item = new DefaultDataItem("ld_to", "ld_to", value);
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269 return new DefaultData(
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270 "ld_to", null, null, new DataItem[] { item });
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271 }
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272
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273
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274 /**
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275 * Returns the Data object for the 'step' attribute.
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276 *
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277 * @return the Data object for the 'step' attribute.
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278 */
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279 protected Data getDataStep() {
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280 String value = Double.valueOf(getFinalStep()).toString();
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281 DataItem item = new DefaultDataItem("ld_step","ld_step", value);
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282 return new DefaultData(
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283 "ld_step", null, null, new DataItem[] { item });
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284 }
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285
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286
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287 /**
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288 * Returns the value of 'from' depending on the selected input mode.
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289 *
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290 * @return the value of 'from' depending on the selected input mode.
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291 */
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292 protected double getFinalFrom() {
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293 if (isLocationMode()) {
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294 double[] values = getLocationValues();
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295 double value = Double.MAX_VALUE;
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296
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297 for (double v: values) {
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298 value = value < v ? value : v;
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299 }
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300
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301 return value;
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302 }
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303 else {
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304 return getFrom();
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305 }
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306 }
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307
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308
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309 /**
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310 * Returns the value of 'to' depending on the selected input mode.
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311 *
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312 * @return the value of 'to' depending on the selected input mode.
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313 */
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314 protected double getFinalTo() {
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315 if (isLocationMode()) {
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316 double[] values = getLocationValues();
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317 double value = Double.MIN_VALUE;
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318
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319 for (double v: values) {
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320 value = value > v ? value : v;
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321 }
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322
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323 return value;
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324 }
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325 else {
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326 return getTo();
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327 }
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328 }
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329
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330
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331 /**
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332 * Returns the value of 'step' depending on the selected input mode.
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333 *
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334 * @return the value of 'step' depending on the selected input mode.
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335 */
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336 protected double getFinalStep() {
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337 if (isLocationMode()) {
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338 // we have no field to enter the 'step' attribute in the location
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339 // mode
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340 return 0.0;
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341 }
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342 else {
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343 return getStep();
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344 }
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345 }
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346
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347
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348 /**
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349 * Determines the current input mode.
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350 *
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351 * @return true, if 'location' is the current input mode, otherwise false.
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352 */
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353 public boolean isLocationMode() {
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354 String inputMode = mode.getValueAsString("mode");
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355
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356 return inputMode.equals(FIELD_LOCATION) ? true : false;
41
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357 }
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358
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359
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360 /**
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361 * This method switches the input mode between location and distance input.
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362 *
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363 * @param event The click event fired by a RadioButtonGroupItem.
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364 */
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365 public void onChange(ChangeEvent event) {
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366 String value = (String) event.getValue();
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367
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368 if (value == null) {
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369 return;
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370 }
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371
43
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372 if (value.equals(FIELD_LOCATION)) {
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373 Canvas locationPanel = new DoubleArrayPanel(
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374 MESSAGES.unitLocation(),
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375 getLocationValues(),
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376 this);
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377
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378 container.removeMembers(container.getMembers());
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379 container.addMember(locationPanel);
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380 }
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381 else {
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382 Canvas distancePanel = new DoubleRangePanel(
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383 MESSAGES.unitFrom(), MESSAGES.unitTo(), MESSAGES.unitWidth(),
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384 getFrom(), getTo(), getStep(),
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385 250,
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386 this);
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387
41
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388 container.removeMembers(container.getMembers());
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389 container.addMember(distancePanel);
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390 }
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391 }
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392
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393
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394 /**
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395 * This method is used to validate the inserted data in the form fields.
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396 *
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397 * @param event The BlurEvent that gives information about the FormItem that
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398 * has been modified and its value.
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399 */
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400 public void onBlur(BlurEvent event) {
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401 FormItem item = event.getItem();
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402 String field = item.getFieldName();
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403
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404 if (field == null) {
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405 return;
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406 }
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407
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408 if (field.equals(DoubleArrayPanel.FIELD_NAME)) {
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409 DoubleArrayPanel p = (DoubleArrayPanel) event.getForm();
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410
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411 saveLocationValue(p, item);
41
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412 }
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413 else {
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414 DoubleRangePanel p = (DoubleRangePanel) event.getForm();
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415
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416 saveDistanceValue(p, item);
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417 }
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418 }
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419
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420
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421 /**
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422 * Validates and stores all values entered in the location mode.
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423 *
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424 * @param p The DoubleArrayPanel.
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425 */
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426 protected void saveLocationValues(DoubleArrayPanel p) {
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427 FormItem[] formItems = p.getFields();
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428
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429 for (FormItem item: formItems) {
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430 if (item.getFieldName().equals(DoubleArrayPanel.FIELD_NAME)) {
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431 saveLocationValue(p, item);
43
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432 }
41
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433 }
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434 }
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435
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436
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437 /**
59
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438 * Validates and stores all values entered in the distance mode.
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439 *
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440 * @param p The DoubleRangePanel.
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441 */
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442 protected void saveDistanceValues(DoubleRangePanel p) {
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443 FormItem[] formItems = p.getFields();
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444
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445 for (FormItem item: formItems) {
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446 saveDistanceValue(p, item);
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447 }
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448 }
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449
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450
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451 /**
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452 * Validates and stores a value entered in the location mode.
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453 *
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454 * @param p The DoubleArrayPanel.
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455 * @param item The item that needs to be validated.
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456 */
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457 protected void saveLocationValue(DoubleArrayPanel p, FormItem item) {
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458 if (p.validateForm(item)) {
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459 setLocationValues(p.getInputValues(item));
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460 }
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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461 }
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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462
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
463
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
464 /**
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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465 * Validates and stores value entered in the distance mode.
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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466 *
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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467 * @param p The DoubleRangePanel.
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
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468 * @param item The item that needs to be validated.
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 58
diff changeset
469 */
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
470 protected void saveDistanceValue(DoubleRangePanel p, FormItem item) {
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
471 if (p.validateForm(item)) {
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
472 setFrom(p.getFrom());
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
473 setTo(p.getTo());
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
474 setStep(p.getStep());
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
475 }
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 58
diff changeset
476 }
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
477
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
478
a3d235c63195 Save the data explicitly in the LocationDistancePanel and WQInputPanel before returning the user input to avoid a nullpointer exception.
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parents: 58
diff changeset
479 /**
41
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parents:
diff changeset
480 * This method creates the panel that contains the checkboxes to switch
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parents:
diff changeset
481 * between the input mode 'location' and 'distance'.
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parents:
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482 *
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parents:
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483 * @return the checkbox panel.
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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parents:
diff changeset
484 */
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parents:
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485 protected Canvas createRadioButtonPanel() {
43
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diff changeset
486 mode = new DynamicForm();
41
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parents:
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487
43
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parents: 41
diff changeset
488 RadioGroupItem radio = new RadioGroupItem("mode");
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parents:
diff changeset
489 radio.setShowTitle(false);
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parents:
diff changeset
490 radio.setVertical(false);
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parents:
diff changeset
491
43
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parents: 41
diff changeset
492 LinkedHashMap values = new LinkedHashMap();
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parents: 41
diff changeset
493 values.put(FIELD_LOCATION, MESSAGES.location());
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parents: 41
diff changeset
494 values.put(FIELD_DISTANCE, MESSAGES.distance());
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
495
45
f99c5f8e4672 Some GUI improvements in the Location/Distance, W/Q and Module panels.
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parents: 43
diff changeset
496 LinkedHashMap initial = new LinkedHashMap();
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parents: 43
diff changeset
497 initial.put("mode", FIELD_LOCATION);
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parents: 43
diff changeset
498
43
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parents: 41
diff changeset
499 radio.setValueMap(values);
41
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parents:
diff changeset
500 radio.addChangeHandler(this);
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parents:
diff changeset
501
43
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
502 mode.setFields(radio);
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f99c5f8e4672 Some GUI improvements in the Location/Distance, W/Q and Module panels.
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parents: 43
diff changeset
503 mode.setValues(initial);
41
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parents:
diff changeset
504
43
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parents: 41
diff changeset
505 return mode;
41
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parents:
diff changeset
506 }
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parents:
diff changeset
507
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
508
43
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
diff changeset
509 protected double getFrom() {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
diff changeset
510 return from;
41
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parents:
diff changeset
511 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
512
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
513
43
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parents: 41
diff changeset
514 protected void setFrom(double from) {
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parents: 41
diff changeset
515 this.from = from;
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parents: 41
diff changeset
516 }
41
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parents:
diff changeset
517
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
518
43
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parents: 41
diff changeset
519 protected double getTo() {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
520 return to;
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parents: 41
diff changeset
521 }
41
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parents:
diff changeset
522
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
523
43
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
524 protected void setTo(double to) {
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
525 this.to = to;
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parents: 41
diff changeset
526 }
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parents:
diff changeset
527
43
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parents: 41
diff changeset
528
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parents: 41
diff changeset
529 protected double getStep() {
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parents: 41
diff changeset
530 return step;
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parents: 41
diff changeset
531 }
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parents: 41
diff changeset
532
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parents: 41
diff changeset
533
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
534 protected void setStep(double step) {
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parents: 41
diff changeset
535 this.step = step;
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
536 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
537
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
538
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
diff changeset
539 protected double[] getLocationValues() {
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parents: 41
diff changeset
540 return values;
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
541 }
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parents: 41
diff changeset
542
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 41
diff changeset
543
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
diff changeset
544 protected void setLocationValues(double[] values) {
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parents: 41
diff changeset
545 this.values = values;
41
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parents:
diff changeset
546 }
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
547 }
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parents:
diff changeset
548 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org