Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/DoubleRangePanel.java @ 59:a3d235c63195
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> |
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date | Fri, 18 Mar 2011 13:45:34 +0000 |
parents | ba7df4a24ae0 |
children | b92281182c6b |
rev | line source |
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ba7df4a24ae0
Added a new widget to enter w/Q values in single and range mode.
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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.Map; |
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4 |
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5 import com.google.gwt.core.client.GWT; |
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6 import com.google.gwt.i18n.client.NumberFormat; |
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7 |
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8 import com.smartgwt.client.types.Alignment; |
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9 import com.smartgwt.client.widgets.form.DynamicForm; |
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10 import com.smartgwt.client.widgets.form.fields.FloatItem; |
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11 import com.smartgwt.client.widgets.form.fields.FormItem; |
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12 import com.smartgwt.client.widgets.form.fields.StaticTextItem; |
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13 import com.smartgwt.client.widgets.form.fields.events.BlurHandler; |
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14 |
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15 import de.intevation.flys.client.client.FLYSMessages; |
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16 |
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17 |
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18 |
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19 /** |
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20 * This class creates a DynamicForm with three input fields. |
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21 * |
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22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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23 */ |
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24 public class DoubleRangePanel |
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25 extends DynamicForm |
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26 { |
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27 /** The message class that provides i18n strings.*/ |
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28 protected FLYSMessages MESSAGES = GWT.create(FLYSMessages.class); |
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29 |
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30 |
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31 /** The constant name of the input field to enter the start of a distance.*/ |
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32 public static final String FIELD_FROM = "from"; |
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33 |
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34 /** The constant name of the input field to enter the end of a distance.*/ |
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35 public static final String FIELD_TO = "to"; |
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36 |
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37 /** The constant name of the input field to enter the step width of a |
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38 * distance.*/ |
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39 public static final String FIELD_WIDTH = "step"; |
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40 |
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41 |
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42 /** |
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43 * Creates a new form with a single input field that displays an array of |
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44 * double values. |
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45 * |
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46 * @param name The name of the TextItem. |
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47 * @param title The title of the TextItem. |
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48 * @param values The double values that should be displayed initially. |
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49 * @param handler The BlurHandler that is used to valide the input. |
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50 */ |
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51 public DoubleRangePanel( |
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52 String titleFrom, String titleTo, String titleStep, |
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53 double from, double to, double step, |
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54 int width, |
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55 BlurHandler handler) |
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56 { |
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57 FloatItem fromItem = new FloatItem(FIELD_FROM); |
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58 FloatItem toItem = new FloatItem(FIELD_TO); |
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59 FloatItem stepItem = new FloatItem(FIELD_WIDTH); |
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60 |
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61 fromItem.addBlurHandler(handler); |
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62 toItem.addBlurHandler(handler); |
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63 stepItem.addBlurHandler(handler); |
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64 |
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65 NumberFormat f = NumberFormat.getDecimalFormat(); |
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66 |
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67 fromItem.setValue(f.format(from)); |
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68 toItem.setValue(f.format(to)); |
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69 stepItem.setValue(f.format(step)); |
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70 |
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71 StaticTextItem fromText = new StaticTextItem("staticFrom"); |
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72 fromText.setValue(titleFrom); |
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73 fromText.setShowTitle(false); |
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74 fromItem.setShowTitle(false); |
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75 |
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76 StaticTextItem toText = new StaticTextItem("staticTo"); |
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77 toText.setValue(titleTo); |
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78 toText.setShowTitle(false); |
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79 toItem.setShowTitle(false); |
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80 |
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81 StaticTextItem stepText = new StaticTextItem("staticStep"); |
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82 stepText.setValue(titleStep); |
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83 stepText.setShowTitle(false); |
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84 stepItem.setShowTitle(false); |
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85 |
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86 int itemWidth = width / 6; |
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87 fromItem.setWidth(itemWidth); |
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88 fromText.setWidth(itemWidth); |
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89 toItem.setWidth(itemWidth); |
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90 toText.setWidth(itemWidth); |
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91 stepItem.setWidth(itemWidth); |
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92 stepText.setWidth(itemWidth); |
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93 |
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94 setFields(fromItem, fromText, toItem, toText, stepItem, stepText); |
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95 setFixedColWidths(false); |
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96 setNumCols(6); |
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97 setWidth(width); |
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98 setAlign(Alignment.CENTER); |
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99 } |
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100 |
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101 |
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102 /** |
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103 * This method validates the entered text in the input fields. If |
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104 * there are values that doesn't represent a valid float, an error is |
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105 * displayed. |
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106 * |
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107 * @param item The FormItem. |
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108 */ |
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109 protected boolean validateForm(FormItem item) { |
59
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110 if (item instanceof StaticTextItem) { |
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111 return true; |
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112 } |
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113 |
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114 boolean valid = true; |
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115 |
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116 String v = (String) item.getValue(); |
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117 |
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118 NumberFormat f = NumberFormat.getDecimalFormat(); |
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119 Map errors = getErrors(); |
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120 |
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121 try { |
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122 double value = f.parse(v); |
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123 |
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124 errors.remove(item.getFieldName()); |
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125 } |
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126 catch (NumberFormatException nfe) { |
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127 errors.put(item.getFieldName(), MESSAGES.wrongFormat()); |
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128 |
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129 item.focusInItem(); |
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130 |
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131 valid = false; |
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132 } |
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133 |
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134 setErrors(errors, true); |
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135 |
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136 return valid; |
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137 } |
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138 |
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139 |
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140 /** |
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141 * Returns the double value of <i>value</i>. |
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142 * |
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143 * @return the double value of <i>value</i>. |
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144 */ |
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145 protected double getDouble(String value) { |
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146 NumberFormat f = NumberFormat.getDecimalFormat(); |
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147 |
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148 return f.parse(value); |
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149 } |
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150 |
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151 |
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152 /** |
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153 * Returns the start value. |
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154 * |
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155 * @return the start value. |
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156 */ |
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157 public double getFrom() { |
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158 String v = getValueAsString(FIELD_FROM); |
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159 |
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160 return getDouble(v); |
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161 } |
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162 |
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163 |
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164 /** |
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165 * Returns the end value. |
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166 * |
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167 * @return the end value. |
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168 */ |
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169 public double getTo() { |
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170 String v = getValueAsString(FIELD_TO); |
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171 |
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172 return getDouble(v); |
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173 } |
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174 |
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175 |
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176 /** |
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177 * Returns the step width. |
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178 * |
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179 * @return the step width. |
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180 */ |
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181 public double getStep() { |
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182 String v = getValueAsString(FIELD_WIDTH); |
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183 |
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184 return getDouble(v); |
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185 } |
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186 } |
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187 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |