annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/map/MeasureControl.java @ 1300:6890e1041eac

Bugfix: #289 Display measured areas in 'ha'. flys-client/trunk@2924 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 10 Oct 2011 11:07:06 +0000
parents 887eb0cd7dfc
children d73f503f2465
rev   line source
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1 package de.intevation.flys.client.client.ui.map;
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2
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3 import com.google.gwt.core.client.GWT;
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4 import com.google.gwt.i18n.client.NumberFormat;
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5
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6 import com.smartgwt.client.types.SelectionType;
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7 import com.smartgwt.client.widgets.ImgButton;
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8 import com.smartgwt.client.widgets.Label;
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9 import com.smartgwt.client.widgets.events.ClickEvent;
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10 import com.smartgwt.client.widgets.events.ClickHandler;
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11 import com.smartgwt.client.widgets.layout.HLayout;
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12
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13 import org.gwtopenmaps.openlayers.client.control.Measure;
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14 import org.gwtopenmaps.openlayers.client.event.MeasureEvent;
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15 import org.gwtopenmaps.openlayers.client.event.MeasureListener;
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16 import org.gwtopenmaps.openlayers.client.event.MeasurePartialListener;
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17 import org.gwtopenmaps.openlayers.client.handler.PathHandler;
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18 import org.gwtopenmaps.openlayers.client.handler.PolygonHandler;
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19
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20 import de.intevation.flys.client.client.FLYSConstants;
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21 import de.intevation.flys.client.client.utils.EnableDisableCmd;
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22
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23
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24 public class MeasureControl extends HLayout {
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25
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26 public static final String NUMBER_FORMAT_PATTERN = "#.##";
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27
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28 public static final String AREA_UNIT = "ha";
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29 public static final int AREA_FACTOR_M = 10000;
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30 public static final int AREA_FACTOR_KM = 100;
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31
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32 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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33
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34 protected FloodMap floodMap;
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35
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36 protected Measure measureLine;
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37 protected Measure measurePolygon;
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38
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39 protected ImgButton measureLineButton;
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40 protected ImgButton measurePolyButton;
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41 protected Label label;
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42
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43 protected NumberFormat formatter;
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44
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45
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46 public MeasureControl(FloodMap floodMap, EnableDisableCmd cmd) {
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47 this.floodMap = floodMap;
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48
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49 measureLineButton = createMeasureLineControl(cmd);
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50 measurePolyButton = createMeasurePolyControl(cmd);
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51
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52 formatter = NumberFormat.getFormat(NUMBER_FORMAT_PATTERN);
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53
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54 label = new Label();
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55
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56 initLayout();
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57 }
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58
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59
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60 protected void initLayout() {
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61 setMembersMargin(2);
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62 addMember(measureLineButton);
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63 addMember(measurePolyButton);
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64 addMember(label);
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65 }
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66
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67
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68 protected ImgButton createMeasureLineControl(final EnableDisableCmd cmd) {
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69 measureLine = new Measure(new PathHandler());
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70 measureLine.setPersist(true);
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71 measureLine.addMeasureListener(new MeasureListener() {
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72 public void onMeasure(MeasureEvent e) {
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73 updateMeasure(e.getMeasure(), e.getUnits());
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74 }
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75 });
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76 measureLine.addMeasurePartialListener(new MeasurePartialListener() {
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77 public void onMeasurePartial(MeasureEvent e) {
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78 updateMeasure(e.getMeasure(), e.getUnits());
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79 }
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80 });
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81
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82 floodMap.getMap().addControl(measureLine);
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83
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84 final ImgButton btn = new ImgButton();
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85 String baseUrl = GWT.getHostPageBaseURL();
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86 btn.setSrc(baseUrl + MSG.measureLine());
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87 btn.setActionType(SelectionType.CHECKBOX);
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88 btn.setSize(20);
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89 btn.setShowRollOver(false);
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90 btn.setSelected(false);
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91 btn.setTooltip(MSG.measureDistance());
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92 btn.addClickHandler(new ClickHandler() {
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93 public void onClick(ClickEvent e) {
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94 if (btn.isSelected()) {
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95 cmd.enable();
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96 activateMeasurePolygon(false);
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97 activateMeasureLine(true);
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98 }
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99 else {
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100 cmd.disable();
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101 activateMeasureLine(false);
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102 }
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103 }
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104 });
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105
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106 return btn;
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107 }
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108
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109
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110 protected ImgButton createMeasurePolyControl(final EnableDisableCmd cmd) {
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111 measurePolygon = new Measure(new PolygonHandler());
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112 measurePolygon.setPersist(true);
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113 measurePolygon.addMeasureListener(new MeasureListener() {
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114 public void onMeasure(MeasureEvent e) {
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115 updateMeasureArea(e.getMeasure(), e.getUnits());
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116 }
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117 });
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118 measurePolygon.addMeasurePartialListener(new MeasurePartialListener() {
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119 public void onMeasurePartial(MeasureEvent e) {
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120 updateMeasureArea(e.getMeasure(), e.getUnits());
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121 }
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122 });
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123
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124 floodMap.getMap().addControl(measurePolygon);
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125
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126 final ImgButton btn = new ImgButton();
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127 String baseUrl = GWT.getHostPageBaseURL();
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128 btn.setSrc(baseUrl + MSG.measurePolygon());
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129 btn.setActionType(SelectionType.CHECKBOX);
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130 btn.setSize(20);
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131 btn.setShowRollOver(false);
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132 btn.setSelected(false);
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133 btn.setTooltip(MSG.measureArea());
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134 btn.addClickHandler(new ClickHandler() {
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135 public void onClick(ClickEvent e) {
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136 if (btn.isSelected()) {
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137 cmd.enable();
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138 activateMeasureLine(false);
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139 activateMeasurePolygon(true);
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140 }
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141 else {
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142 cmd.disable();
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143 activateMeasurePolygon(false);
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144 }
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145 }
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146 });
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147
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148 return btn;
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149 }
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150
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151
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152 protected void clearMeasure() {
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153 label.setContents("");
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154 }
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155
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156
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157 protected void updateMeasure(float value, String unit) {
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158 label.setContents(formatter.format(value) + " " + unit);
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159 }
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160
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161
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162 protected void updateMeasureArea(float value, String unit) {
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163 float ha = value;
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164 String ha_unit = unit;
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165
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166 if (unit.equals("m")) {
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167 ha = (float) value / AREA_FACTOR_M;
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168 ha_unit = AREA_UNIT;
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169 }
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170 else if (unit.equals("km")) {
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171 ha = (float) value * AREA_FACTOR_KM;
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172 ha_unit = AREA_UNIT;
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173 }
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174
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175 label.setContents(formatter.format(ha) + " " + ha_unit);
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176 }
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177
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178
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179 public void activate(boolean activate) {
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180 if (!activate) {
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181 clearMeasure();
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182 activateMeasureLine(activate);
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183 activateMeasurePolygon(activate);
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184 }
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185 }
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186
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187
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188 protected void activateMeasureLine(boolean activate) {
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189 if (activate) {
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190 clearMeasure();
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191 measureLineButton.select();
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192 measureLine.activate();
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193 }
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194 else {
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195 measureLineButton.deselect();
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196 measureLine.deactivate();
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197 }
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198 }
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199
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200
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201 protected void activateMeasurePolygon(boolean activate) {
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202 if (activate) {
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203 clearMeasure();
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204 measurePolyButton.select();
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205 measurePolygon.activate();
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206 }
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207 else {
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208 measurePolyButton.deselect();
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209 measurePolygon.deactivate();
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210 }
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211 }
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212 }
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213 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

http://dive4elements.wald.intevation.org