Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/AbstractPairRecommendationPanel.java @ 8852:8f6d6d26e96f

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Refaktored the DatacageTwinPanel so it is reusable.
author gernotbelger
date Thu, 18 Jan 2018 18:32:30 +0100
parents
children 8d1df8639563
rev   line source
8852
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.client.ui;
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10
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11 import com.google.gwt.core.client.GWT;
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12 import com.google.gwt.user.client.rpc.AsyncCallback;
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13
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14 import com.smartgwt.client.data.Record;
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15 import com.smartgwt.client.types.ListGridFieldType;
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16 import com.smartgwt.client.widgets.Canvas;
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17 import com.smartgwt.client.widgets.events.ClickEvent;
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18 import com.smartgwt.client.widgets.grid.ListGrid;
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19 import com.smartgwt.client.widgets.grid.ListGridField;
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20 import com.smartgwt.client.widgets.grid.ListGridRecord;
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21 import com.smartgwt.client.widgets.grid.events.RecordClickEvent;
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22 import com.smartgwt.client.widgets.grid.events.RecordClickHandler;
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23 import com.smartgwt.client.widgets.layout.VLayout;
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24
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25 import org.dive4elements.river.client.client.Config;
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26 import org.dive4elements.river.client.client.FLYSConstants;
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27 import org.dive4elements.river.client.client.event.StepForwardEvent;
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28 import org.dive4elements.river.client.client.services.LoadArtifactServiceAsync;
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29 import org.dive4elements.river.client.client.services.RemoveArtifactServiceAsync;
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30 import org.dive4elements.river.client.shared.model.Artifact;
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31 import org.dive4elements.river.client.shared.model.Collection;
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32 import org.dive4elements.river.client.shared.model.Data;
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33 import org.dive4elements.river.client.shared.model.DataItem;
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34 import org.dive4elements.river.client.shared.model.DataList;
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35 import org.dive4elements.river.client.shared.model.DefaultData;
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36 import org.dive4elements.river.client.shared.model.DefaultDataItem;
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37 import org.dive4elements.river.client.shared.model.Recommendation;
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38 import org.dive4elements.river.client.shared.model.Recommendation.Facet;
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39 import org.dive4elements.river.client.shared.model.Recommendation.Filter;
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40 import org.dive4elements.river.client.shared.model.User;
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41
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42 import java.util.ArrayList;
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43 import java.util.List;
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44 import java.util.Map;
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45 import java.util.Set;
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46
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47 // TODO Probably better to branch off AbstractUIProvider.
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48 // TODO Merge with other datacage-widget impls.
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49 /**
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50 * Panel containing a Grid and a "next" button. The Grid is fed by a
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51 * DatacagePairWidget which is put in the input-helper area.
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52 */
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53 public abstract class AbstractPairRecommendationPanel
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54 extends TextProvider {
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55
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56 /**
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57 * Allows for abstraction on how to handle/serialize the recommendation and the used factories.
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58 * @author Gernot Belger
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59 *
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60 */
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61 public static interface IRecommendationInfo {
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62
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63 String getFactory();
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64
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65 /**
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66 * Separate factory for the 'createDataString' method, because in the case of waterlevels. See HOTFIX/FIXME there.
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67 */
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68 String getDataStringFactory();
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69
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70 /**
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71 * Set factory of recommendation such that the correct artifacts will
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72 * be cloned for difference calculations.
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73 */
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74 void adjustRecommendation(Recommendation recommendation);
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75 }
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76
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77 public static interface IValidator
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78 {
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79 List<String> validate(ListGrid differencesList, FLYSConstants msgProvider);
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80 }
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81
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82 private static final long serialVersionUID = 8906629596491827857L;
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83
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84 // FIXME: why? we hide the field of the super class with exactly the same thing...
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85 private static FLYSConstants MSG_PROVIDER = GWT.create(FLYSConstants.class);
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86
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87 private String dataName;
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88
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89 private User user;
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90
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91 /** ListGrid that displays user-selected pairs to build differences with. */
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92 private ListGrid differencesList;
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93
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94 /**
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95 * List to track previously selected but now removed pairs. (Needed to
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96 * be able to identify artifacts that can be removed from the collection.
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97 */
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98 private List<RecommendationPairRecord> removedPairs =
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99 new ArrayList<RecommendationPairRecord>();
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100
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101 /** Service handle to clone and add artifacts to collection. */
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102 private LoadArtifactServiceAsync loadArtifactService = GWT.create(
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103 org.dive4elements.river.client.client.services.LoadArtifactService.class);
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104
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105 /** Service to remove artifacts from collection. */
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106 private RemoveArtifactServiceAsync removeArtifactService = GWT.create(
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107 org.dive4elements.river.client.client.services.RemoveArtifactService.class);
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108
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109 private IRecommendationInfo leftInfo;
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110
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111 private IRecommendationInfo rightInfo;
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112
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113 private IValidator validator;
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114
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115 /**
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116 * @param Validates the content of this form when the user clicks 'apply'
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117 * @param leftInfo Delegate for handling the left part of the recommendation-pair
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118 * @param rightInfo Delegate for handling the right part of the recommendation-pair
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119 */
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120 public AbstractPairRecommendationPanel(final User user, IValidator validator, final IRecommendationInfo leftInfo, final IRecommendationInfo rightInfo ) {
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121 this.user = user;
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122 this.validator = validator;
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123 this.leftInfo = leftInfo;
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124 this.rightInfo = rightInfo;
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125 }
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126
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127 // FIXME: better than copy/pasting the MSG field into every sub-class but not really nice yet.
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128 protected final static FLYSConstants msg() {
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129 return MSG_PROVIDER;
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130 }
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131
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132 /**
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133 * Remove first occurrence of "[" and "]" (if both do occur).
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134 * @param value String to be stripped of [] (might be null).
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135 * @return input string but with [ and ] removed, or input string if no
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136 * brackets were found.
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137 * @see StringUtil.unbracket
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138 */
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139 // FIXME: check if this is the same as STringUItils#unbracket
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140 private static final String unbracket(String value) {
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141 // null- guard.
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142 if (value == null) return value;
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143
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144 int start = value.indexOf("[");
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145 int end = value.indexOf("]");
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146
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147 if (start < 0 || end < 0) {
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148 return value;
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149 }
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150
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151 return value.substring(start + 1, end);
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152 }
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153
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154 /**
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155 * Create a recommendation from a string representation of it.
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156 * @param from string in format as shown above.
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157 * @param leftInfo2
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158 * @return recommendation from input string.
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159 */
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160 private Recommendation createRecommendationFromString(final String from, final IRecommendationInfo info) {
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161 // TODO Construct "real" filter.
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162 String[] parts = unbracket(from).split(";");
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163 Recommendation.Filter filter = new Recommendation.Filter();
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164 Recommendation.Facet facet = new Recommendation.Facet(
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165 parts[1],
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166 parts[2]);
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167
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168 List<Recommendation.Facet> facets = new ArrayList<Recommendation.Facet>();
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169 facets.add(facet);
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170 filter.add("longitudinal_section", facets);
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171
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172 final String factory = info.getFactory( );
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173
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174 final Recommendation r = new Recommendation(factory, parts[0], this.artifact.getUuid(), filter);
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175 r.setDisplayName(parts[3]);
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176 return r;
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177 }
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178
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179
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180 /**
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181 * Add RecomendationPairRecords from input String to the ListGrid.
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182 */
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183 private void populateGridFromString(String from){
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184 // Split this string.
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185 // Create according recommendations and display strings.
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186 String[] recs = from.split("#");
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187 if (recs.length % 2 != 0) return;
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188 for (int i = 0; i < recs.length; i+=2) {
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189 Recommendation minuend =
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190 createRecommendationFromString(recs[i+0], leftInfo);
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191 Recommendation subtrahend =
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192 createRecommendationFromString(recs[i+1], rightInfo);
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193
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194 RecommendationPairRecord pr = new RecommendationPairRecord(
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195 minuend, subtrahend);
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196 // This Recommendation Pair comes from the data string and was thus
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197 // already cloned.
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198 pr.setIsAlreadyLoaded(true);
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199 this.differencesList.addData(pr);
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200 }
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201 }
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202
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203 /**
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204 * Creates the graphical representation and interaction widgets for the data.
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205 * @param dataList the data.
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206 * @return graphical representation and interaction widgets for data.
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207 */
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208 @Override
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209 public final Canvas create(DataList dataList) {
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210
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211 final Canvas widget = createWidget();
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212
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213 final Canvas canvas = createChooserWidgets(widget, dataList, user, differencesList);
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214
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215 populateGrid(dataList);
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216
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217 return canvas;
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218 }
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219
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220 /**
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221 * Creates the individual parts of the input-helper area ('Eingabeunterstützung') for choosing the content of this widget.
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222 */
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223 protected abstract Canvas createChooserWidgets(final Canvas widget, final DataList dataList, final User auser, final ListGrid diffList);
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224
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225 private void populateGrid(DataList dataList) {
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226 Data data = dataList.get(0);
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227 this.dataName = data.getLabel();
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228 for (int i = 0; i < dataList.size(); i++) {
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229 if (dataList.get(i) != null && dataList.get(i).getItems() != null) {
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230 if (dataList.get(i).getItems() != null) {
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231 populateGridFromString(
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232 dataList.get(i).getItems()[0].getStringValue());
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233 }
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234 }
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235 }
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236 }
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237
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238 @Override
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239 public final List<String> validate() {
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240 return validator.validate(differencesList, MSG_PROVIDER);
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241 }
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242
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243 /**
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244 * Creates layout with grid that displays selection inside.
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245 */
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246 protected final Canvas createWidget() {
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247 VLayout layout = new VLayout();
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248 differencesList = new ListGrid();
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249
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250 differencesList.setCanEdit(false);
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251 differencesList.setCanSort(false);
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252 differencesList.setShowHeaderContextMenu(false);
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253 differencesList.setHeight(150);
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254 differencesList.setShowAllRecords(true);
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255
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256 ListGridField nameField = new ListGridField("first", "Minuend");
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257 ListGridField capitalField = new ListGridField("second", "Subtrahend");
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258 // Track removed rows, therefore more or less reimplement
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259 // setCanRecomeRecords.
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260 final ListGridField removeField =
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261 new ListGridField("_removeRecord", "Remove Record"){{
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262 setType(ListGridFieldType.ICON);
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263 setIcon(GWT.getHostPageBaseURL() + msg().removeFeature());
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264 setCanEdit(false);
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265 setCanFilter(false);
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266 setCanSort(false);
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267 setCanGroupBy(false);
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268 setCanFreeze(false);
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269 setWidth(25);
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270 }};
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271
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272 differencesList.setFields(new ListGridField[] {nameField,
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273 capitalField, removeField});
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274
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275 differencesList.addRecordClickHandler(new RecordClickHandler() {
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276 @Override
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277 public void onRecordClick(final RecordClickEvent event) {
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278 // Just handle remove-clicks
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279 if(!event.getField().getName().equals(removeField.getName())) {
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280 return;
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281 }
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282 trackRemoved(event.getRecord());
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283 event.getViewer().removeData(event.getRecord());
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284 }
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285 });
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286 layout.addMember(differencesList);
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287
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288 return layout;
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289 }
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290
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291
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292 /**
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293 * Add record to list of removed records.
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294 */
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295 protected final void trackRemoved(Record r) {
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296 RecommendationPairRecord pr = (RecommendationPairRecord) r;
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297 this.removedPairs.add(pr);
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298 }
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299
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300 /**
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301 * Validates data, does nothing if invalid, otherwise clones new selected
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302 * waterlevels and add them to collection, forward the artifact.
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303 */
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304 @Override
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305 public void onClick(ClickEvent e) {
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306 GWT.log("AbstractPairRecommendationPanel.onClick");
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307
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308 List<String> errors = validate();
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309 if (errors != null && !errors.isEmpty()) {
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310 showErrors(errors);
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311 return;
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312 }
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313
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314 Config config = Config.getInstance();
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315 String locale = config.getLocale();
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316
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317 ListGridRecord[] records = differencesList.getRecords();
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318
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319 List<Recommendation> ar = new ArrayList<Recommendation>();
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320 List<Recommendation> all = new ArrayList<Recommendation>();
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321
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322 for (ListGridRecord record : records) {
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323 RecommendationPairRecord r =
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324 (RecommendationPairRecord) record;
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325 // Do not add "old" recommendations.
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326 if (!r.isAlreadyLoaded()) {
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327 // Check whether one of those is a dike or similar.
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328 // TODO differentiate and merge: new clones, new, old.
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329 Recommendation firstR = r.getFirst();
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330 leftInfo.adjustRecommendation(firstR);
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331
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332 Recommendation secondR = r.getSecond();
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333 rightInfo.adjustRecommendation(secondR);
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334 ar.add(firstR);
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335 ar.add(secondR);
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336 }
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337 else {
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338 all.add(r.getFirst());
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339 all.add(r.getSecond());
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340 }
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341 }
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342
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343 final Recommendation[] toClone = ar.toArray(new Recommendation[ar.size()]);
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344 final Recommendation[] toUse = all.toArray(new Recommendation[all.size()]);
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345
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346 // Find out whether "old" artifacts have to be removed.
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347 List<String> artifactIdsToRemove = new ArrayList<String>();
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348 for (RecommendationPairRecord rp: this.removedPairs) {
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349 Recommendation first = rp.getFirst();
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350 Recommendation second = rp.getSecond();
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351
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352 for (Recommendation recommendation: toUse) {
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353 if (first != null && first.getIDs().equals(recommendation.getIDs())) {
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354 first = null;
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355 }
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356 if (second != null && second.getIDs().equals(recommendation.getIDs())) {
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357 second = null;
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358 }
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359
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360 if (first == null && second == null) {
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361 break;
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362 }
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363 }
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364 if (first != null) {
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365 artifactIdsToRemove.add(first.getIDs());
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366 }
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367 if (second != null) {
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368 artifactIdsToRemove.add(second.getIDs());
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369 }
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370 }
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371
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372 // Remove old artifacts, if any. Do this asychronously without much
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373 // feedback.
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374 for(final String uuid: artifactIdsToRemove) {
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375 removeArtifactService.remove(this.collection,
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376 uuid,
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377 locale,
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378 new AsyncCallback<Collection>() {
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379 @Override
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380 public void onFailure(Throwable caught) {
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381 GWT.log("RemoveArtifact (" + uuid + ") failed.");
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382 }
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383 @Override
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384 public void onSuccess(Collection coll) {
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385 GWT.log("RemoveArtifact succeeded");
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386 }
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387 });
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388 }
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389
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390 // Clone new ones (and spawn statics), go forward.
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391 parameterList.lockUI();
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392 loadArtifactService.loadMany(
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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393 this.collection,
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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394 toClone,
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395 //"staticwkms" and "waterlevel"
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396 null,
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diff changeset
397 locale,
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
398 new AsyncCallback<Artifact[]>() {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
399 @Override
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400 public void onFailure(Throwable caught) {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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401 caught.printStackTrace();
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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402 GWT.log("Failure of cloning with factories!");
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
403 parameterList.unlockUI();
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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parents:
diff changeset
404 }
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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405 @Override
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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406 public void onSuccess(Artifact[] artifacts) {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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407 GWT.log("Successfully cloned " + toClone.length +
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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parents:
diff changeset
408 " with factories.");
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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409
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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410 fireStepForwardEvent(new StepForwardEvent(
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
411 getData(toClone, artifacts, toUse)));
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412 parameterList.unlockUI();
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
413 }
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
414 });
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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415 }
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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416
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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417 /**
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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418 * Create Data and DataItem from selection (a long string with identifiers
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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419 * to construct diff-pairs).
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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420 *
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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421 * @param newRecommendations "new" recommendations (did not survive a
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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422 * backjump).
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423 * @param newArtifacts artifacts cloned from newRecommendations.
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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424 * @param oldRecommendations old recommendations that survived a backjump.
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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425 *
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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426 * @return dataitem with a long string with identifiers to construct
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
427 * diff-pairs.
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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428 */
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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429 protected final Data[] getData(
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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430 Recommendation[] newRecommendations,
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
431 Artifact[] newArtifacts,
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
432 Recommendation[] oldRecommendations)
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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433 {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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434 // Construct string with info about selections.
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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435 String dataItemString = "";
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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436 for (int i = 0; i < newRecommendations.length; i++) {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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437 Recommendation r = newRecommendations[i];
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
438 Artifact newArtifact = newArtifacts[i];
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
439 String uuid = newArtifact.getUuid();
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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440 r.setMasterArtifact(uuid);
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
441
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
gernotbelger
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diff changeset
442 if (i>0)
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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parents:
diff changeset
443 dataItemString += "#";
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
444
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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445 // REMARK: ugly, but we know that the recommandations comes in left/right pairs.
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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446 final IRecommendationInfo info = i % 2 == 0 ? leftInfo : rightInfo;
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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447
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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448 dataItemString += createDataString(uuid, r, info);
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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diff changeset
449 }
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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450
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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451 for (int i = 0; i < oldRecommendations.length; i++) {
8f6d6d26e96f Refaktored the DatacageTwinPanel so it is reusable.
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452 Recommendation r = oldRecommendations[i];
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453 String uuid = r.getIDs();
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454
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455 if (dataItemString.length() > 0)
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456 dataItemString += "#";
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457
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458 // REMARK: ugly, but we know that the recommandations comes in left/right pairs.
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459 final IRecommendationInfo info = i % 2 == 0 ? leftInfo : rightInfo;
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460
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461 dataItemString += createDataString(uuid, r, info);
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462 }
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463
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464 // TODO some hassle could be resolved by using multiple DataItems
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465 // (e.g. one per pair).
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466 DataItem item = new DefaultDataItem(dataName, dataName, dataItemString);
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467 return new Data[] { new DefaultData(
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468 dataName, null, null, new DataItem[] {item}) };
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469 }
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470
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471 /**
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472 * Creates part of the String that encodes minuend or subtrahend.
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473 * @param recommendation Recommendation to wrap in string.
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474 * @param info Provides the factory to encode.
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475 */
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476 protected static final String createDataString(final String artifactUuid, final Recommendation recommendation, final IRecommendationInfo info) {
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477 final String factory = info.getDataStringFactory();
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478
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479 Filter filter = recommendation.getFilter();
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480 Facet f = null;
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481
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482 if(filter != null) {
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483 Map<String, List<Facet>> outs = filter.getOuts();
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484 Set<Map.Entry<String, List<Facet>>> entries = outs.entrySet();
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485
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486 for (Map.Entry<String, List<Facet>> entry: entries) {
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487 List<Facet> fs = entry.getValue();
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488
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489 f = fs.get(0);
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490 if (f != null) {
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491 break;
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492 }
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493 }
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494
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495 return "[" + artifactUuid + ";"
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496 + f.getName()
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497 + ";"
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498 + f.getIndex()
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499 + ";"
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500 + recommendation.getDisplayName() + "]";
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501 }
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502
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503 return "["
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504 + artifactUuid
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505 + ";" + factory + ";0;"
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506 + recommendation.getDisplayName() + "]";
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507 }
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508 }
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