Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/DatacageWidget.java @ 897:2b6efb8b2301

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Refactored DatacageWidget to allow reuse in other use-cases. flys-client/trunk@2743 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 14 Sep 2011 14:18:54 +0000
parents 63b258bf365c
children a1a5dc2b9e34
rev   line source
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1 package de.intevation.flys.client.client.ui;
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2
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3 import de.intevation.flys.client.client.event.DatacageHandler;
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4
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5 import com.google.gwt.core.client.GWT;
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6
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7 import com.google.gwt.user.client.rpc.AsyncCallback;
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8
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9 import com.smartgwt.client.util.SC;
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10
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11 import com.smartgwt.client.widgets.Button;
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12
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13 import com.smartgwt.client.widgets.tree.Tree;
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14 import com.smartgwt.client.widgets.tree.TreeGrid;
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15 import com.smartgwt.client.widgets.tree.TreeNode;
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16
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17 import com.smartgwt.client.types.TreeModelType;
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18
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19 import com.smartgwt.client.widgets.layout.VLayout;
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20
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21 import com.smartgwt.client.widgets.events.ClickHandler;
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22 import com.smartgwt.client.widgets.events.ClickEvent;
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23
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24 import com.smartgwt.client.widgets.grid.ListGridRecord;
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25
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26 import com.smartgwt.client.widgets.grid.events.RecordDoubleClickEvent;
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27 import com.smartgwt.client.widgets.grid.events.RecordDoubleClickHandler;
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28
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29 import de.intevation.flys.client.shared.model.Artifact;
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30 import de.intevation.flys.client.shared.model.User;
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31 import de.intevation.flys.client.shared.model.ToLoad;
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32
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33 import de.intevation.flys.client.client.FLYSConstants;
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34 import de.intevation.flys.client.client.Config;
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35
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36 import de.intevation.flys.client.client.services.MetaDataService;
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37 import de.intevation.flys.client.client.services.MetaDataServiceAsync;
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38
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39 import de.intevation.flys.client.shared.model.DataCageTree;
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40 import de.intevation.flys.client.shared.model.DataCageNode;
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41 import de.intevation.flys.client.shared.model.AttrList;
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42
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43 import java.util.ArrayList;
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44 import java.util.List;
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45 import java.util.Stack;
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46
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47 // TODO: refactor, extract ~DataCageGrid
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48 public class DatacageWidget
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49 extends VLayout
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50 {
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51 protected MetaDataServiceAsync metaDataService =
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52 GWT.create(MetaDataService.class);
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53
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54 protected FLYSConstants messages =
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55 GWT.create(FLYSConstants.class);
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56
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57 protected Artifact artifact;
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58 protected User user;
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59 protected String outs;
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60
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61 protected TreeGrid treeGrid;
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62 protected Tree tree;
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63
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64 protected ToLoad toLoad;
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65
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66 protected List<DatacageHandler> handlers;
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67
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68
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69 public DatacageWidget() {
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70 handlers = new ArrayList<DatacageHandler>();
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71 }
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72
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73
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74 public DatacageWidget(Artifact artifact, User user) {
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75 this(artifact, user, null);
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76 }
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77
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78 public DatacageWidget(Artifact artifact, User user, String outs) {
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79 this(artifact, user, outs, true);
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80 }
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81
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82 public DatacageWidget(Artifact artifact, User user, String outs,
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83 boolean showButton) {
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84 this();
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85
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86 this.artifact = artifact;
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87 this.user = user;
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88 this.outs = outs;
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89
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90 toLoad = new ToLoad();
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91
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92 setWidth100();
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93
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94 tree = new Tree();
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95 tree.setModelType(TreeModelType.PARENT);
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96 tree.setNameProperty("name");
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97 tree.setIdField("id");
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98 tree.setParentIdField("parent-id");
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99
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100 treeGrid = new TreeGrid();
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101 treeGrid.setLoadDataOnDemand(false);
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102 treeGrid.setWidth100();
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103 treeGrid.setHeight100();
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104 treeGrid.setShowRoot(false);
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105
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106 treeGrid.addRecordDoubleClickHandler(new RecordDoubleClickHandler() {
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107 @Override
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108 public void onRecordDoubleClick(RecordDoubleClickEvent event) {
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109 doubleClickedOnTree(event);
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110 }
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111 });
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112
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113 addMember(treeGrid);
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114
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115 if (showButton) {
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116 addMember(createPlusButton());
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117 }
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118
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119 triggerTreeBuilding();
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120 }
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121
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122
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123 /**
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124 * @param handler Handler to be added (notified on add-action).
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125 */
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126 public DatacageWidget(Artifact artifact, User user, String outs,
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127 DatacageHandler handler) {
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128 this(artifact, user, outs);
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129 this.addDatacageHandler(handler);
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130 }
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131
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132
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133 /**
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134 * @param handler Handler to be added (notified on add-action).
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135 */
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136 public void addDatacageHandler(DatacageHandler handler) {
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137 if (!handlers.contains(handler)) {
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138 handlers.add(handler);
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139 }
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140 }
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141
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142
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143 /**
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144 * @param handler Handler to remove from list.
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145 */
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146 public void removeDatacageHandler(DatacageHandler handler) {
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147 handlers.remove(handler);
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148 }
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149
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150
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151 public ToLoad getToLoad() {
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152 return toLoad;
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153 }
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154
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155
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156 public ToLoad getSelection() {
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157 // Reset content of toLoads.
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158 toLoad = new ToLoad();
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159
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160 if (treeGrid == null) {
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161 return toLoad;
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162 }
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163
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164 ListGridRecord [] selection = treeGrid.getSelection();
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165
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166 if (selection != null) {
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167 for (ListGridRecord record: selection) {
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168 if (record instanceof TreeNode) {
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169 collectToLoads((TreeNode)record);
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170 }
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171 }
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172 }
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173
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174 return toLoad;
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175 }
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176
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177
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178 /**
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179 * Callback for add-button.
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180 * Fires to load for every selected element and handler.
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181 */
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182 public void plusClicked() {
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183 if (!getSelection().isEmpty()) {
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184 fireToLoad();
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185 }
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186 }
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187
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188
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189 protected Button createPlusButton() {
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190 // TODO: i18n + icon
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191 Button plusBtn = new Button("+");
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192 plusBtn.addClickHandler(new ClickHandler() {
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193 @Override
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194 public void onClick(ClickEvent event) {
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195 plusClicked();
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196 }
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197 });
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198 return plusBtn;
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199 }
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200
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201
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202 protected void fireToLoad() {
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203 for (DatacageHandler handler: handlers) {
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204 handler.toLoad(toLoad);
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205 }
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206 }
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207
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208
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209 protected void doubleClickedOnTree(RecordDoubleClickEvent event) {
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210
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211 TreeNode node = (TreeNode)event.getRecord();
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212 collectToLoads(node);
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213 destroy();
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214 }
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215
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216
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217 protected void collectToLoads(TreeNode node) {
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218 Stack<TreeNode> stack = new Stack<TreeNode>();
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219
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220 stack.push(node);
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221
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222 while (!stack.isEmpty()) {
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223 node = stack.pop();
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224 String factory = node.getAttribute("factory");
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225 if (factory != null) { // we need at least a factory
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226 String artifact = node.getAttribute("artifact-id");
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227 String out = node.getAttribute("out");
892
63b258bf365c Bugfix: Use name instead of description for loading new facets via Datacage.
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diff changeset
228 String name = node.getAttribute("facet");
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229 String ids = node.getAttribute("ids");
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230
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231 toLoad.add(artifact, factory, out, name, ids);
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232 }
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233 TreeNode [] children = tree.getChildren(node);
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234 if (children != null) {
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235 for (TreeNode child: children) {
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236 stack.push(child);
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237 }
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238 }
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239 }
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240 }
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241
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242
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243 protected void triggerTreeBuilding() {
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244 Config config = Config.getInstance();
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245 String url = config.getServerUrl();
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246 String locale = config.getLocale();
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247
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248 String artifactId = artifact.getUuid();
868
439068365cde Minor cosmetics.
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diff changeset
249 String userId = (user != null) ? user.identifier() : null;
848
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250
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251 metaDataService.getMetaData(
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252 url, locale,
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253 artifactId,
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254 userId,
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255 outs,
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256 new AsyncCallback<DataCageTree>() {
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257 public void onFailure(Throwable caught) {
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258 GWT.log("Could not load meta data.");
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259 SC.warn(caught.getMessage());
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260 }
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261
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262 public void onSuccess(DataCageTree dcTree) {
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263 GWT.log("Successfully loaded meta data.");
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264 tree.setData(treeToData(dcTree));
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265 treeGrid.setData(tree);
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266 }
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267 });
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268 }
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269
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270 private static class IdGenerator {
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271 protected int current;
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272
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273 public IdGenerator() {
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274 }
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275
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276 public IdGenerator(int start) {
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277 current = start;
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278 }
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279
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280 public int next() {
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281 return current++;
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282 }
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283 } // class IdGenerator
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284
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285 protected static void buildRecursive(
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286 DataCageNode node,
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287 int parentId,
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288 IdGenerator idGenerator,
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289 List<TreeNode> nodes
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290 ) {
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291 TreeNode tn = new TreeNode();
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292 int id = idGenerator.next();
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293 tn.setAttribute("parent-id", parentId);
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294 tn.setAttribute("id", id);
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295 // TODO: i18n
892
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296 tn.setAttribute("name", node.getDescription());
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297 tn.setAttribute("facet", node.getName());
848
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298 nodes.add(tn);
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299 AttrList attrs = node.getAttributes();
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300 if (attrs != null) {
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301 for (int i = 0, N = attrs.size(); i < N; ++i) {
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302 String key = attrs.getKey(i);
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303 String value = attrs.getValue(i);
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304 tn.setAttribute(key, value);
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305 }
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306 }
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307 List<DataCageNode> children = node.getChildren();
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308 if (children != null) {
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309 for (DataCageNode child: children) {
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310 buildRecursive(child, id, idGenerator, nodes);
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311 }
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312 }
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313 }
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314
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315
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316 protected static TreeNode [] treeToData(DataCageTree tree) {
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317 List<TreeNode> nodes = new ArrayList<TreeNode>();
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318
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319 DataCageNode root = tree.getRoot();
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320
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321 IdGenerator idGenerator = new IdGenerator();
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322
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323 buildRecursive(root, idGenerator.next(), idGenerator, nodes);
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324
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325 return nodes.toArray(new TreeNode[nodes.size()]);
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326 }
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327 }
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328 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org