Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/DatacageWidget.java @ 9220:e3c2ae1887e8

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Allow to filter contents of datacage on client side. Allow to override column label of datacage Some code cleanup
author gernotbelger
date Wed, 04 Jul 2018 12:00:51 +0200
parents 93da474506e7
children 84397da33d17
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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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 java.util.ArrayList;
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12 import java.util.Collection;
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13 import java.util.List;
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14 import java.util.MissingResourceException;
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15 import java.util.Stack;
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16
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17 import org.dive4elements.river.client.client.Config;
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18 import org.dive4elements.river.client.client.FLYSConstants;
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19 import org.dive4elements.river.client.client.event.DatacageDoubleClickHandler;
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20 import org.dive4elements.river.client.client.event.DatacageHandler;
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21 import org.dive4elements.river.client.client.services.MetaDataService;
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22 import org.dive4elements.river.client.client.services.MetaDataServiceAsync;
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23 import org.dive4elements.river.client.shared.model.AttrList;
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24 import org.dive4elements.river.client.shared.model.DataCageNode;
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25 import org.dive4elements.river.client.shared.model.DataCageTree;
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26 import org.dive4elements.river.client.shared.model.ToLoad;
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27 import org.dive4elements.river.client.shared.model.User;
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28
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29 import com.google.gwt.core.client.GWT;
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30 import com.google.gwt.user.client.rpc.AsyncCallback;
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31 import com.smartgwt.client.types.SelectionStyle;
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32 import com.smartgwt.client.types.TreeModelType;
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33 import com.smartgwt.client.util.SC;
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34 import com.smartgwt.client.widgets.Button;
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35 import com.smartgwt.client.widgets.events.ClickEvent;
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36 import com.smartgwt.client.widgets.events.ClickHandler;
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37 import com.smartgwt.client.widgets.grid.HoverCustomizer;
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38 import com.smartgwt.client.widgets.grid.ListGridRecord;
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39 import com.smartgwt.client.widgets.grid.events.RecordDoubleClickEvent;
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40 import com.smartgwt.client.widgets.grid.events.RecordDoubleClickHandler;
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41 import com.smartgwt.client.widgets.layout.VLayout;
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42 import com.smartgwt.client.widgets.tree.Tree;
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43 import com.smartgwt.client.widgets.tree.TreeGrid;
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44 import com.smartgwt.client.widgets.tree.TreeNode;
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45
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46 // TODO: refactor, extract ~DataCageGrid
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47 /**
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48 * Display tree of, for example, previous calculations and allows
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49 * selection in order to access/clone these.
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50 */
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51 public class DatacageWidget extends VLayout {
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52 public static final int MAX_OPEN = 30;
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53
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54 public interface DatacageFilter {
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55 boolean accept(DataCageNode node);
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56 }
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57
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58 public static final DatacageFilter ACCEPT_ALL_FILTER = new DatacageFilter() {
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59 @Override
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60 public boolean accept(final DataCageNode node) {
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61 return true;
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62 }
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63 };
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64
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65 private final MetaDataServiceAsync metaDataService = GWT.create(MetaDataService.class);
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66
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67 private final FLYSConstants messages = GWT.create(FLYSConstants.class);
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68
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69 private final List<DatacageHandler> handlers = new ArrayList<DatacageHandler>();
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70
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71 private final List<DatacageDoubleClickHandler> doubleHandlers = new ArrayList<DatacageDoubleClickHandler>();
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72
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73 private final TreeGrid treeGrid;
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74
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75 private Tree tree;
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76
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77 private ToLoad toLoad;
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78
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79 /** Layout to show spinning wheel of joy. */
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80 private VLayout lockScreen;
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81
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82 private DataCageTree dcTree;
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83
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84 private DatacageFilter filter = ACCEPT_ALL_FILTER;
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85
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86 private DatacageWidgetData data;
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87
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88 public DatacageWidget(final DatacageWidgetData data) {
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89
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90 this.data = data;
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91
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92 this.toLoad = new ToLoad();
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93
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94 setWidth100();
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95
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96 this.treeGrid = new TreeGrid();
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97
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98 final String columnLabel = this.data.getColumnLabel();
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99 if (columnLabel != null)
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100 this.treeGrid.setTreeFieldTitle(columnLabel);
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101
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102 this.treeGrid.setLoadDataOnDemand(false);
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103 this.treeGrid.setWidth100();
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104 this.treeGrid.setHeight100();
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105 this.treeGrid.setShowRoot(false);
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106 this.treeGrid.setNodeIcon("[SKIN]/../blank.gif");
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107 this.treeGrid.setShowConnectors(true);
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108 this.treeGrid.setLoadingMessage(this.messages.databasket_loading());
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109 this.treeGrid.setLoadingDataMessage(this.messages.databasket_loading());
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110
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111 // FIXME: other message
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112 this.treeGrid.setEmptyMessage(this.messages.databasket_loading());
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113
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114 this.treeGrid.setHoverMoveWithMouse(true);
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115 this.treeGrid.setCanHover(true);
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116 this.treeGrid.setShowHover(true);
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117 this.treeGrid.setHoverOpacity(75);
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118 this.treeGrid.setHoverWidth(120);
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119
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120 this.treeGrid.setHoverCustomizer(new HoverCustomizer() {
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121 @Override
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122 public String hoverHTML(final Object value, final ListGridRecord record, final int rowNum, final int colNum) {
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123 if (record instanceof TreeNode) {
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124 final TreeNode hoveredTreeNode = (TreeNode) record;
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125 String info = hoveredTreeNode.getAttribute("info");
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126 if (info == null) {
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127 info = hoveredTreeNode.getName();
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128 }
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129 return info;
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130 }
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131
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132 return "";// should not happen
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133 }
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134 });
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135
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136 this.treeGrid.addRecordDoubleClickHandler(new RecordDoubleClickHandler() {
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137 @Override
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138 public void onRecordDoubleClick(final RecordDoubleClickEvent event) {
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139 doubleClickedOnTree(event);
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140 }
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141 });
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142
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143 addMember(this.treeGrid);
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144
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145 if (data.isShowButton())
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146 addMember(createPlusButton());
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147
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148 triggerTreeBuilding();
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149 }
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150
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151 public void setFilter(final DatacageFilter filter) {
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152 assert (filter != null);
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153
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154 this.filter = filter;
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155
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156 if (this.dcTree != null)
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157 updateTree(this.dcTree);
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158 }
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159
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160 /** Disable input, show spinning wheel of joy. */
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161 private void lockUI() {
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162 this.lockScreen = ScreenLock.lockUI(this, this.lockScreen);
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163 }
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164
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165 /** Enable input, remove grey, remove spinning wheel of joy. */
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166 protected final void unlockUI() {
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167 ScreenLock.unlockUI(this, this.lockScreen);
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168 }
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169
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170 /**
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171 * Sets whether more than one item can be selected.
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172 *
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173 * @param multi
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174 * if true, allow mutliple selections.
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175 */
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176 public void setIsMutliSelectable(final boolean multi) {
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177 if (multi) {
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178 this.treeGrid.setSelectionType(SelectionStyle.MULTIPLE);
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179 } else {
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180 this.treeGrid.setSelectionType(SelectionStyle.SINGLE);
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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 * @param handler
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186 * Handler to be added (notified on add-action).
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187 */
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188 public void addDatacageHandler(final DatacageHandler handler) {
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189 if (!this.handlers.contains(handler)) {
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190 this.handlers.add(handler);
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191 }
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192 }
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193
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194 /**
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195 * @param h
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196 * Handler to be added (notified on Double click on node).
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197 */
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198 public void addDatacageDoubleClickHandler(final DatacageDoubleClickHandler h) {
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199 if (!this.doubleHandlers.contains(h)) {
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200 this.doubleHandlers.add(h);
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201 }
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202 }
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203
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204 /**
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205 * @param handler
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206 * Handler to remove from list.
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207 */
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208 public void removeDatacageHandler(final DatacageHandler handler) {
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209 this.handlers.remove(handler);
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210 }
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211
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212 public ToLoad getSelection() {
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213 // Reset content of toLoads.
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214 this.toLoad = new ToLoad();
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215
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216 if (this.treeGrid == null) {
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217 return this.toLoad;
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218 }
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219
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220 final ListGridRecord[] selection = this.treeGrid.getSelectedRecords();
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221
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222 if (selection != null) {
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223 for (final ListGridRecord record : selection) {
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224 if (record instanceof TreeNode) {
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225 collectToLoads((TreeNode) record);
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226 }
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227 }
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228 }
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229
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230 return this.toLoad;
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231 }
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232
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233 public List<TreeNode> getPlainSelection() {
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234 final ListGridRecord[] selection = this.treeGrid.getSelectedRecords();
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235 final List<TreeNode> nodes = new ArrayList<TreeNode>();
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236 if (selection != null) {
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237 for (final ListGridRecord record : selection) {
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238 if (record instanceof TreeNode) {
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239 nodes.add((TreeNode) record);
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240 }
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241 }
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242 }
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243 return nodes;
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244 }
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245
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246 /**
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247 * Returns the titles of selected items (if any).
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248 */
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249 public String[] getSelectionTitles() {
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250 if (this.treeGrid == null) {
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251 return new String[] {};
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252 }
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253
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254 final ListGridRecord[] selection = this.treeGrid.getSelectedRecords();
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255
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256 if (selection == null) {
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257 return new String[] {};
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258 }
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259
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260 final List<String> titleList = new ArrayList<String>();
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261 for (final ListGridRecord record : selection) {
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262 if (record instanceof TreeNode) {
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263 titleList.add(((TreeNode) record).getAttribute("name"));
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264 }
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265 }
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266
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267 return titleList.toArray(new String[titleList.size()]);
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268 }
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269
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270 /**
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271 * Callback for add-button.
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272 * Fires to load for every selected element and handler.
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273 */
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274 protected final void plusClicked() {
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275 if (!getSelection().isEmpty()) {
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276 fireToLoad();
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277 }
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278 }
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279
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280 private Button createPlusButton() {
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281 final Button plusBtn = new Button(this.messages.datacageAdd());
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282 plusBtn.addClickHandler(new ClickHandler() {
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283 @Override
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284 public void onClick(final ClickEvent event) {
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285 plusClicked();
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286 }
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287 });
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288 return plusBtn;
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289 }
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290
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291 private void fireToLoad() {
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292 for (final DatacageHandler handler : this.handlers) {
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293 handler.toLoad(this.toLoad);
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294 }
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295 }
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296
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297 /** Notify DatacageDoubleClickHandlers that a doubleclick happened. */
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298 private void fireOnDoubleClick() {
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299 for (final DatacageDoubleClickHandler handler : this.doubleHandlers) {
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300 handler.onDoubleClick(this.toLoad);
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301 }
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302 }
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303
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304 protected final void doubleClickedOnTree(final RecordDoubleClickEvent event) {
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305 final TreeNode node = (TreeNode) event.getRecord();
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306 collectToLoads(node);
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307 fireOnDoubleClick();
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308 }
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309
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310 /**
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311 * Adds to toLoad, from info in node.
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312 * Afterwards, add all children of node to stack to parse (next time
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313 * collectToLoads is called).
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314 */
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315 private void collectToLoads(TreeNode node) {
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316 final Stack<TreeNode> stack = new Stack<TreeNode>();
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317
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318 stack.push(node);
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319
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320 while (!stack.isEmpty()) {
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321 node = stack.pop();
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322 final String factory = node.getAttribute("factory");
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323 if (factory != null) { // we need at least a factory
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324 final String artifact = node.getAttribute("artifact-id");
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325 final String out = node.getAttribute("out");
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326 final String name = node.getAttribute("facet");
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327 final String ids = node.getAttribute("ids");
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328 final String displayname = node.getAttribute("name");
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329 final String targetOut = node.getAttribute("target_out");
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330 String debugAttributeValues = "";
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331 for (final String attr : node.getAttributes()) {
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332 debugAttributeValues += ("[" + attr + ": " + node.getAttributeAsString(attr) + "] ");
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333 }
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334 GWT.log("DatacageWidget.collectToLoad, attributes are " + debugAttributeValues);
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335
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336 this.toLoad.add(artifact, factory, out, name, ids, displayname, targetOut);
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337 }
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338 final TreeNode[] children = this.tree.getChildren(node);
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339 if (children != null) {
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340 for (final TreeNode child : children) {
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341 stack.push(child);
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342 }
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343 }
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344 }
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345 }
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346
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347 /** Get meta-data and populate tree with it. */
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348 private void triggerTreeBuilding() {
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349 lockUI();
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350
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351 final String locale = Config.getInstance().getLocale();
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352
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353 final String artifactId = this.data.getArtifact().getUuid();
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354 final User user = this.data.getUser();
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355 final String userId = user != null ? user.identifier() : null;
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356 final String outs = this.data.getOuts();
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357 final String parameters = this.data.getParameters();
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358
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359 this.metaDataService.getMetaData(locale, artifactId, userId, outs, parameters, new AsyncCallback<DataCageTree>() {
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360 @Override
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361 public void onFailure(final Throwable caught) {
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362 GWT.log("Could not load meta data.");
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363 SC.warn(caught.getMessage());
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364 unlockUI();
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365 }
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366
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367 @Override
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368 public void onSuccess(final DataCageTree dcData) {
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369 GWT.log("Successfully loaded meta data.");
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370
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371 setDatacageData(dcData);
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372 unlockUI();
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373 }
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374 });
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375 }
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376
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377 protected final void setDatacageData(final DataCageTree dcTree) {
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378
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379 this.dcTree = dcTree;
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380
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381 if (this.tree != null)
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382 this.tree.destroy();
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383
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384 updateTree(this.dcTree);
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385 }
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386
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387 private void updateTree(final DataCageTree data) {
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388
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389 this.tree = new Tree();
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390 this.tree.setModelType(TreeModelType.CHILDREN);
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391 this.tree.setNameProperty("name");
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392 this.tree.setIdField("id");
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393 this.tree.setChildrenProperty("children-nodes");
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394 this.tree.setShowRoot(false);
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395
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396 final IdGenerator idGenerator = new IdGenerator();
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397 final DataCageNode dcRoot = data.getRoot();
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398 final TreeNode root = buildRecursiveChildren(dcRoot, idGenerator);
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399 if (root != null) {
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400 this.tree.setRoot(root);
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401
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402 // FIXME: why is this necessary? an it only happens for the first level...
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403 final TreeNode[] nodes = this.tree.getChildren(root);
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404 for (final TreeNode node : nodes) {
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405 if (node.getAttribute("factory") == null && !this.tree.hasChildren(node))
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406 node.setIsFolder(true);
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407 }
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408 }
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409
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410 if (idGenerator.current() < MAX_OPEN)
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411 this.tree.openAll();
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412
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413 this.treeGrid.setData(this.tree);
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414 }
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415
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416 private static final class IdGenerator {
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417 protected int current;
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418
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419 public IdGenerator() {
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420 }
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421
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422 public int next() {
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423 return this.current++;
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424 }
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425
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426 public int current() {
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427 return this.current;
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428 }
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429 } // class IdGenerator
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430
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431 private String i18n(String s) {
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432 if (!(s.startsWith("${") && s.endsWith("}"))) {
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433 return s;
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434 }
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435
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436 s = s.substring(2, s.length() - 1);
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437
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438 try {
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439 return this.messages.getString(s);
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440 }
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441 catch (final MissingResourceException mre) {
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442 GWT.log("cannot find i18n for + '" + s + "'");
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443 return s;
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444 }
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445 }
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446
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447 private TreeNode buildRecursiveChildren(final DataCageNode node, final IdGenerator idGenerator) {
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448
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449 if (!this.filter.accept(node))
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450 return null;
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451
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452 final List<DataCageNode> children = node.getChildren();
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453
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454 final Collection<TreeNode> tns = new ArrayList<TreeNode>();
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455
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456 if (children != null && !children.isEmpty()) {
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457
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458 for (final DataCageNode child : children) {
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459
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460 final TreeNode childNode = buildRecursiveChildren(child, idGenerator);
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461 if (childNode != null)
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462 tns.add(childNode);
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463 }
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464
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465 /* if we should have children, but all got filtered, hide this node as well */
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466 if (tns.isEmpty())
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467 return null;
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468 }
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469
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470 final TreeNode tn = new TreeNode();
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471 tn.setAttribute("id", idGenerator.next());
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472
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473 if (!tns.isEmpty())
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474 tn.setAttribute("children-nodes", tns.toArray(new TreeNode[tns.size()]));
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475
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476 tn.setAttribute("name", i18n(node.getDescription()));
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63b258bf365c Bugfix: Use name instead of description for loading new facets via Datacage.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 884
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477 tn.setAttribute("facet", node.getName());
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478
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479 final AttrList attrs = node.getAttributes();
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480 if (attrs != null) {
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481 for (int i = 0, N = attrs.size(); i < N; ++i) {
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482 final String key = attrs.getKey(i);
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483 final String value = attrs.getValue(i);
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484 tn.setAttribute(key, value);
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485 }
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parents:
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486 }
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parents:
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487
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488 return tn;
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489 }
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490 }
http://dive4elements.wald.intevation.org