Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/LocationDistancePanel.java @ 46:0d4795b4f284

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Implemented the getData() method of the LocationDistancePanel. flys-client/trunk@1492 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 17 Mar 2011 10:28:03 +0000
parents f99c5f8e4672
children d573ae975330
rev   line source
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87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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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.Map;
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5
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6 import com.google.gwt.core.client.GWT;
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7 import com.google.gwt.i18n.client.NumberFormat;
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8
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9 import com.smartgwt.client.types.TitleOrientation;
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10 import com.smartgwt.client.widgets.Canvas;
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11 import com.smartgwt.client.widgets.IButton;
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12 import com.smartgwt.client.widgets.Label;
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13 import com.smartgwt.client.widgets.form.DynamicForm;
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14 import com.smartgwt.client.widgets.form.fields.events.BlurHandler;
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15 import com.smartgwt.client.widgets.form.fields.events.BlurEvent;
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16 import com.smartgwt.client.widgets.form.fields.events.ChangeHandler;
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17 import com.smartgwt.client.widgets.form.fields.events.ChangeEvent;
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18 import com.smartgwt.client.widgets.form.fields.FormItem;
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19 import com.smartgwt.client.widgets.form.fields.FloatItem;
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20 import com.smartgwt.client.widgets.form.fields.RadioGroupItem;
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21 import com.smartgwt.client.widgets.form.fields.TextItem;
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22 import com.smartgwt.client.widgets.layout.HLayout;
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23 import com.smartgwt.client.widgets.layout.VLayout;
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25 import de.intevation.flys.client.shared.model.Data;
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26 import de.intevation.flys.client.shared.model.DataItem;
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27 import de.intevation.flys.client.shared.model.DefaultData;
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28 import de.intevation.flys.client.shared.model.DefaultDataItem;
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29 import de.intevation.flys.client.client.FLYSMessages;
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32 /**
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33 * This UIProvider creates a widget to enter locations or a distance.
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34 *
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35 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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36 */
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37 public class LocationDistancePanel
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38 extends AbstractUIProvider
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39 implements ChangeHandler, BlurHandler
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40 {
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41 /** The message class that provides i18n strings.*/
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42 protected FLYSMessages MESSAGES = GWT.create(FLYSMessages.class);
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45 /** The constant name of the input field to enter locations.*/
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46 public static final String FIELD_LOCATION = "location";
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48 /** The constant name of the input field to enter distance.*/
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49 public static final String FIELD_DISTANCE = "distance";
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41
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51 /** The constant name of the input field to enter the start of a distance.*/
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52 public static final String FIELD_FROM = "from";
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53
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54 /** The constant name of the input field to enter the end of a distance.*/
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55 public static final String FIELD_TO = "to";
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56
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57 /** The constant name of the input field to enter the step width of a
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58 * distance.*/
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59 public static final String FIELD_WIDTH = "width";
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61
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62 /** The radio group for input mode selection.*/
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63 protected DynamicForm mode;
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64
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65 /** A container that will contain the location or the distance panel.*/
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66 protected HLayout container;
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67
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68 /** The 'from' value entered in the distance mode.*/
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69 protected double from;
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71 /** The 'to' value entered in the distance mode.*/
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72 protected double to;
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74 /** The 'step' value entered in the distance mode.*/
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75 protected double step;
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77 /** The values entered in the location mode.*/
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78 protected double[] values;
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79
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81 /**
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82 * Creates a new LocationDistancePanel instance.
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83 */
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84 public LocationDistancePanel() {
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85 }
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86
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87
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88 /**
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89 * This method creates a widget that contains a label, a panel with
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90 * checkboxes to switch the input mode between location and distance input,
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91 * and a the mode specific panel.
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92 *
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93 * @param data The data that might be inserted.
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94 *
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95 * @return a panel.
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96 */
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97 public Canvas create(Data data) {
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98 VLayout layout = new VLayout();
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99
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100 Label label = new Label(MESSAGES.location_distance_state());
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101 Canvas widget = createWidget(data);
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102 IButton submit = new IButton(MESSAGES.next(), this);
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103
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104 label.setHeight(25);
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105
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106 layout.addMember(label);
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107 layout.addMember(widget);
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108 layout.addMember(submit);
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109
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110 return layout;
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111 }
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112
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113
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114 protected Canvas createWidget(Data data) {
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115 VLayout layout = new VLayout();
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116 container = new HLayout();
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117 Canvas checkboxPanel = createRadioButtonPanel();
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118
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119 // the initial view will display the location input mode
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120 Canvas locationPanel = new DoubleArrayPanel(
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121 MESSAGES.unitLocation(),
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122 getLocationValues(),
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123 this);
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124 container.addMember(locationPanel);
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125
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126 layout.addMember(checkboxPanel);
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127 layout.addMember(container);
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128
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129 // TODO Add a table on the right to select locations by mouse click
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130
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131 return layout;
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132 }
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133
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134
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135 /**
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136 * This method returns the selected data.
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137 *
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138 * @return the selected/inserted data.
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139 */
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140 public Data[] getData() {
46
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141 return new Data[] { getDataFrom(), getDataTo(), getDataStep() };
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142 }
41
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143
46
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144
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145 /**
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146 * Returns the Data object for the 'from' attribute.
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147 *
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148 * @return the Data object for the 'from' attribute.
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149 */
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150 protected Data getDataFrom() {
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151 String value = Double.valueOf(getFinalFrom()).toString();
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152 DataItem item = new DefaultDataItem("ld_from", "ld_from", value);
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153 return new DefaultData(
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154 "ld_from", null, null, new DataItem[] { item }, null);
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155 }
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156
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157
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158 /**
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159 * Returns the Data object for the 'to' attribute.
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160 *
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161 * @return the Data object for the 'to' attribute.
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162 */
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163 protected Data getDataTo() {
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164 String value = Double.valueOf(getFinalTo()).toString();
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165 DataItem item = new DefaultDataItem("ld_to", "ld_to", value);
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166 return new DefaultData(
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167 "ld_to", null, null, new DataItem[] { item }, null);
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168 }
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169
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170
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171 /**
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172 * Returns the Data object for the 'step' attribute.
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173 *
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174 * @return the Data object for the 'step' attribute.
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175 */
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176 protected Data getDataStep() {
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177 String value = Double.valueOf(getFinalStep()).toString();
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178 DataItem item = new DefaultDataItem("ld_step","ld_step", value);
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179 return new DefaultData(
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180 "ld_step", null, null, new DataItem[] { item }, null);
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181 }
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182
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183
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184 /**
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185 * Returns the value of 'from' depending on the selected input mode.
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186 *
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187 * @return the value of 'from' depending on the selected input mode.
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188 */
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189 protected double getFinalFrom() {
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190 if (isLocationMode()) {
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191 double[] values = getLocationValues();
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192 double value = Double.MAX_VALUE;
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193
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194 for (double v: values) {
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195 value = value < v ? value : v;
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196 }
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197
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198 return value;
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199 }
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200 else {
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201 return getFrom();
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202 }
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203 }
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204
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205
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206 /**
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207 * Returns the value of 'to' depending on the selected input mode.
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208 *
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209 * @return the value of 'to' depending on the selected input mode.
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210 */
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211 protected double getFinalTo() {
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212 if (isLocationMode()) {
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213 double[] values = getLocationValues();
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214 double value = Double.MIN_VALUE;
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215
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216 for (double v: values) {
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217 value = value > v ? value : v;
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218 }
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219
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220 return value;
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221 }
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222 else {
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223 return getTo();
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224 }
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225 }
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226
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227
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228 /**
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229 * Returns the value of 'step' depending on the selected input mode.
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230 *
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231 * @return the value of 'step' depending on the selected input mode.
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232 */
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233 protected double getFinalStep() {
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234 if (isLocationMode()) {
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235 // we have no field to enter the 'step' attribute in the location
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236 // mode
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237 return 0.0;
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238 }
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239 else {
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240 return getStep();
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241 }
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242 }
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243
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244
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245 /**
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246 * Determines the current input mode.
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247 *
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248 * @return true, if 'location' is the current input mode, otherwise false.
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249 */
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250 public boolean isLocationMode() {
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251 String inputMode = mode.getValueAsString("mode");
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252
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253 return inputMode.equals(FIELD_LOCATION) ? true : false;
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254 }
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255
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256
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257 /**
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258 * This method switches the input mode between location and distance input.
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259 *
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260 * @param event The click event fired by a RadioButtonGroupItem.
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261 */
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262 public void onChange(ChangeEvent event) {
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263 String value = (String) event.getValue();
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264
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265 if (value == null) {
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266 return;
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267 }
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268
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269 if (value.equals(FIELD_LOCATION)) {
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270 Canvas locationPanel = new DoubleArrayPanel(
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271 MESSAGES.unitLocation(),
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272 getLocationValues(),
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273 this);
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274
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275 container.removeMembers(container.getMembers());
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276 container.addMember(locationPanel);
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277 }
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278 else {
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279 Canvas distancePanel = new DoubleRangePanel(
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280 MESSAGES.unitFrom(), MESSAGES.unitTo(), MESSAGES.unitWidth(),
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281 getFrom(), getTo(), getStep(),
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282 250,
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283 this);
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284
41
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285 container.removeMembers(container.getMembers());
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286 container.addMember(distancePanel);
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287 }
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288 }
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289
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290
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291 /**
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292 * This method is used to validate the inserted data in the form fields.
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293 *
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294 * @param event The BlurEvent that gives information about the FormItem that
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295 * has been modified and its value.
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296 */
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297 public void onBlur(BlurEvent event) {
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298 FormItem item = event.getItem();
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299 String field = item.getFieldName();
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300
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301 if (field == null) {
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302 return;
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303 }
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304
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305 if (field.equals(DoubleArrayPanel.FIELD_NAME)) {
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306 DoubleArrayPanel p = (DoubleArrayPanel) event.getForm();
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307
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308 if (p.validateForm(item)) {
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309 setLocationValues(p.getInputValues(item));
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310 }
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311 }
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312 else {
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313 DoubleRangePanel p = (DoubleRangePanel) event.getForm();
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314
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315 if (p.validateForm(item)) {
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316 setFrom(p.getFrom());
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317 setTo(p.getTo());
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318 setStep(p.getStep());
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319 }
41
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320 }
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321 }
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322
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323
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324 /**
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325 * This method creates the panel that contains the checkboxes to switch
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326 * between the input mode 'location' and 'distance'.
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327 *
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328 * @return the checkbox panel.
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329 */
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330 protected Canvas createRadioButtonPanel() {
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331 mode = new DynamicForm();
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332
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333 RadioGroupItem radio = new RadioGroupItem("mode");
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334 radio.setShowTitle(false);
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335 radio.setVertical(false);
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336
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337 LinkedHashMap values = new LinkedHashMap();
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338 values.put(FIELD_LOCATION, MESSAGES.location());
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339 values.put(FIELD_DISTANCE, MESSAGES.distance());
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340
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341 LinkedHashMap initial = new LinkedHashMap();
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342 initial.put("mode", FIELD_LOCATION);
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343
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344 radio.setValueMap(values);
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345 radio.addChangeHandler(this);
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346
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347 mode.setFields(radio);
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348 mode.setValues(initial);
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349
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350 return mode;
41
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351 }
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352
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353
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354 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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355 return from;
41
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356 }
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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357
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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358
43
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359 protected void setFrom(double from) {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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360 this.from = from;
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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361 }
41
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362
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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363
43
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364 protected double getTo() {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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365 return to;
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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366 }
41
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367
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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368
43
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369 protected void setTo(double to) {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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370 this.to = to;
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371 }
41
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372
43
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373
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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374 protected double getStep() {
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375 return step;
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parents: 41
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376 }
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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377
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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378
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
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379 protected void setStep(double step) {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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380 this.step = step;
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381 }
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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382
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parents: 41
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383
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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384 protected double[] getLocationValues() {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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385 return values;
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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parents: 41
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386 }
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
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387
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
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388
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
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389 protected void setLocationValues(double[] values) {
6bcd8e3f21a7 Refactored the LocationDistancePanel, so that is uses the DoubleArrayPanel and DoubleRangePanel from the last commit as well.
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390 this.values = values;
41
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391 }
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>
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392 }
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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393 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org