Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/ParameterList.java @ 83:4784ca718476

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Improved the positioning of helper widgets and some layout specific stuff. flys-client/trunk@1593 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 28 Mar 2011 16:00:23 +0000
parents 39210a74db07
children f8c240f28c2a
rev   line source
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dc086030e6a3 The CollectionView is able to create new instances of a WINFO artifact and to display the artifact's state.
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1 package de.intevation.flys.client.client.ui;
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3 import java.util.ArrayList;
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4 import java.util.List;
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5
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6 import com.google.gwt.core.client.GWT;
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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.types.VerticalAlignment;
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10 import com.smartgwt.client.widgets.Canvas;
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11 import com.smartgwt.client.widgets.layout.HLayout;
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12 import com.smartgwt.client.widgets.layout.VLayout;
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14 import de.intevation.flys.client.shared.model.Artifact;
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15 import de.intevation.flys.client.shared.model.ArtifactDescription;
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16 import de.intevation.flys.client.shared.model.Data;
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17 import de.intevation.flys.client.shared.model.DataItem;
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18 import de.intevation.flys.client.shared.model.DataList;
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19 import de.intevation.flys.client.shared.model.DefaultData;
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20 import de.intevation.flys.client.shared.model.DefaultDataItem;
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21 import de.intevation.flys.client.shared.model.River;
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22 import de.intevation.flys.client.client.Config;
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23 import de.intevation.flys.client.client.FLYS;
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24 import de.intevation.flys.client.client.FLYSMessages;
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25 import de.intevation.flys.client.client.event.HasParameterChangeHandler;
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26 import de.intevation.flys.client.client.event.HasStepBackHandlers;
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27 import de.intevation.flys.client.client.event.HasStepForwardHandlers;
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28 import de.intevation.flys.client.client.event.ParameterChangeEvent;
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29 import de.intevation.flys.client.client.event.ParameterChangeHandler;
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30 import de.intevation.flys.client.client.event.StepBackEvent;
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31 import de.intevation.flys.client.client.event.StepBackHandler;
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32 import de.intevation.flys.client.client.event.StepForwardEvent;
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33 import de.intevation.flys.client.client.event.StepForwardHandler;
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34 import de.intevation.flys.client.client.services.AdvanceService;
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35 import de.intevation.flys.client.client.services.AdvanceServiceAsync;
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36 import de.intevation.flys.client.client.services.ArtifactService;
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37 import de.intevation.flys.client.client.services.ArtifactServiceAsync;
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38 import de.intevation.flys.client.client.services.StepForwardService;
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39 import de.intevation.flys.client.client.services.StepForwardServiceAsync;
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42 public class ParameterList
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43 extends HLayout
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44 implements StepBackHandler, StepForwardHandler, ParameterChangeHandler,
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45 HasParameterChangeHandler
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46 {
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47 /** The message class that provides i18n strings.*/
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48 protected FLYSMessages MSG = GWT.create(FLYSMessages.class);
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49
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50 /** The ArtifactService used to communicate with the Artifact server. */
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51 protected ArtifactServiceAsync artifactService =
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52 GWT.create(ArtifactService.class);
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54 /** The StepForwardService used to put data into an existing artifact. */
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55 protected StepForwardServiceAsync forwardService =
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56 GWT.create(StepForwardService.class);
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58 /** The StepForwardService used to put data into an existing artifact. */
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59 protected AdvanceServiceAsync advanceService =
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60 GWT.create(AdvanceService.class);
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63 /** The list of ParameterizationChangeHandler.*/
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64 protected List<ParameterChangeHandler> parameterHandlers;
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65
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66 protected FLYS flys;
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67
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68 protected CollectionView cView;
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69
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70 protected Artifact artifact;
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71
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72 protected List<DataList> old;
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73 protected DataList current;
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75 protected UIProvider uiProvider;
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77 protected VLayout oldItems;
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78 protected VLayout currentItems;
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79 protected Canvas helperPanel;
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80
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81 public ParameterList(FLYS flys, CollectionView cView) {
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82 this.cView = cView;
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83 this.flys = flys;
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84
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85 parameterHandlers = new ArrayList<ParameterChangeHandler>();
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86 old = new ArrayList<DataList>();
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87 oldItems = new VLayout();
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88 currentItems = new VLayout();
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90 init();
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91 }
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94 protected void init() {
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95 setMembersMargin(20);
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96
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97 VLayout left = new VLayout();
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98
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99 if (old == null || old.size() == 0) {
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100 oldItems.setHeight(0);
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101 }
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102
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103 oldItems.setMembersMargin(10);
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104 currentItems.setAlign(VerticalAlignment.TOP);
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105
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106 left.setMembersMargin(20);
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107 left.setWidth(300);
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109 left.addMember(oldItems);
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110 left.addMember(currentItems);
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111
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112 // This canvas is used to render helper widgets
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113 helperPanel = new Canvas();
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115 addMember(left);
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116 addMember(helperPanel);
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118 Canvas moduleSelection = renderNew();
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119 moduleSelection.setLayoutAlign(VerticalAlignment.TOP);
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120 currentItems.addMember(moduleSelection);
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121 }
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122
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123
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124 protected void setArtifact(Artifact artifact) {
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125 Artifact tmp = this.artifact;
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126 this.artifact = artifact;
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127
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128 fireParameterChangeEvent(tmp, this.artifact);
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129 }
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130
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131
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132 /**
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133 * This method registers a new ParameterChangeHandler.
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134 *
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135 * @param handler The new ParameterChangeHandler.
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136 */
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137 public void addParameterChangeHandler(ParameterChangeHandler handler) {
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138 if (handler != null) {
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139 parameterHandlers.add(handler);
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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 /**
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145 * This method calls the <code>onParameterChange()</code> method of all
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146 * registered ParameterChangeHandler.
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147 */
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148 protected void fireParameterChangeEvent(Artifact old, Artifact newArt) {
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149 for (ParameterChangeHandler handler: parameterHandlers) {
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150 handler.onParameterChange(new ParameterChangeEvent(old, newArt));
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151 }
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152 }
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153
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154
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155 /**
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156 * This method creates a Canvas displaying the plugins of FLYS combined with
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157 * a widget to select a river.
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158 *
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159 * @return a Canvas that displays the supported plugins and rivers of FLYS.
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160 */
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161 protected Canvas renderNew() {
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162 River[] rivers = flys.getRivers();
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163 DataItem[] items = new DataItem[rivers.length];
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164
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165 int i = 0;
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166 for (River river: rivers) {
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167 String name = river.getName();
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168 items[i++] = new DefaultDataItem(name, null, name);
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169 }
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170
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171 Data data = new DefaultData(
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172 "river",
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173 MSG.river_selection(),
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174 null,
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175 items);
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176
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177 ModuleSelection widget = new ModuleSelection();
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178 HasStepForwardHandlers handler = (HasStepForwardHandlers) widget;
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179
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180 widget.setContainer(helperPanel);
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181
73
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182 handler.addStepForwardHandler(new StepForwardHandler() {
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183 public void onStepForward(StepForwardEvent event) {
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184 Data[] data = event.getData();
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185
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186 DataItem[] moduleItems = data[0].getItems();
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187 DataItem[] riversItems = data[1].getItems();
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188
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189 String module = moduleItems[0].getStringValue();
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190 String river = riversItems[0].getStringValue();
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191
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192 final String serverUrl = Config.getInstance().getServerUrl();
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193 final Data[] feedData = new Data[] { data[1] };
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194 artifactService.create(
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195 serverUrl, module.toLowerCase(),
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196 new AsyncCallback<Artifact>() {
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197 public void onFailure(Throwable caught) {
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198 GWT.log("Could not create the new artifact.");
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199 GWT.log(caught.getMessage());
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200 }
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201
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202 public void onSuccess(Artifact artifact) {
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203 GWT.log("Successfully created a new artifact.");
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204
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205 forwardService.go(serverUrl, artifact, feedData,
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206 new AsyncCallback<Artifact>() {
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207 public void onFailure(Throwable caught) {
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208 GWT.log("Could not feed the artifact.");
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209 GWT.log(caught.getMessage());
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210 }
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211
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212 public void onSuccess(Artifact artifact) {
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213 GWT.log("Successfully feed the artifact.");
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214 setArtifact(artifact);
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215 }
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216 });
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217 }
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218 });
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219 }
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220 });
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221
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222 DataList list = new DataList();
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223 list.add(data);
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224
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225 return widget.create(list);
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226 }
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227
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228
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229 protected void clearOldData() {
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230 old.clear();
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231 }
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232
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233
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234 public void addOldData(DataList old) {
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235 if (old != null) {
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236 this.old.add(old);
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237 }
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238
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239 refreshOld();
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240 }
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241
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242
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243 public void addOldDatas(DataList[] old) {
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244 if (old != null && old.length > 0) {
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245 for (DataList o: old) {
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246 if (!exists(o)) {
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247 GWT.log("Data '" + o.getLabel() + "' is new.");
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248 addOldData(o);
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249 }
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250 }
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251
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252 return;
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253 }
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254
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255 addOldData(null);
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256 }
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257
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258
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259 public boolean exists(DataList data) {
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260 String stateName = data.getState();
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261
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262 for (DataList o: old) {
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263 if (stateName.equals(o.getState())) {
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264 return true;
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265 }
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266 }
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267
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268 return false;
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269 }
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270
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271
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272 public void setCurrentData(DataList current, UIProvider uiProvider) {
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273 this.current = current;
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274 this.uiProvider = uiProvider;
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275
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276 refreshCurrent();
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277 }
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278
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279
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280 public void refreshOld() {
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281 // XXX maybe we should not remove all items but just add the newest item
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282 // to the list.
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283 oldItems.removeMembers(oldItems.getMembers());
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284
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285 for (DataList dataList: old) {
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286 HLayout h = new HLayout();
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287 h.setAlign(VerticalAlignment.TOP);
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288 h.setHeight(20);
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289
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290 String provider = dataList.getUIProvider();
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291 UIProvider uiprovider = UIProviderFactory.getProvider(provider);
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292 ((HasStepBackHandlers) uiprovider).addStepBackHandler(this);
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293
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294 oldItems.addMember(uiprovider.createOld(dataList));
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295 }
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296
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297 int minHeight = oldItems.getMinHeight();
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298 if (minHeight <= 20) {
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299 oldItems.setHeight(20);
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300 }
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301 else {
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302 oldItems.setHeight(minHeight);
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303 }
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304 }
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305
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306
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307 /**
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308 * This method refreshes the part displaying the data of the current state.
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309 * The UI is created using the UIProvider stored in the Data object.
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310 */
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311 public void refreshCurrent() {
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312 currentItems.removeMembers(currentItems.getMembers());
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313
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314 if (current != null && uiProvider != null) {
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315 Canvas c = uiProvider.create(current);
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316 c.setLayoutAlign(VerticalAlignment.TOP);
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317
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318 currentItems.addMember(c);
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319 }
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320 }
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321
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322
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323 /**
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324 * This method is called if the user clicks on the 'next' button to advance
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325 * to the next state.
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326 *
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327 * @param event The StepForwardEvent.
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328 */
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329 public void onStepForward(StepForwardEvent event) {
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330 GWT.log("CollectionView - onStepForward()");
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331 String serverUrl = Config.getInstance().getServerUrl();
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332
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333 forwardService.go(serverUrl, artifact, event.getData(),
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334 new AsyncCallback<Artifact>() {
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335 public void onFailure(Throwable caught) {
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336 GWT.log("Could not feed the artifact.");
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337 GWT.log(caught.getMessage());
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338 }
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339
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340 public void onSuccess(Artifact artifact) {
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341 GWT.log("Successfully feed the artifact.");
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342 setArtifact(artifact);
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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
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348 /**
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349 * This method is used to remove all old items from this list after the user
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350 * has clicked the step back button.
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351 *
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352 * @param e The StepBackEvent that holds the identifier of the target state.
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353 */
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354 public void onStepBack(StepBackEvent e) {
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355 final String target = e.getTarget();
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356 final String serverUrl = Config.getInstance().getServerUrl();
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357
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358 advanceService.advance(serverUrl, artifact, target,
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359 new AsyncCallback<Artifact>() {
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360 public void onFailure(Throwable caught) {
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361 GWT.log("Could not go back to '" + target + "'");
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362 GWT.log(caught.getMessage());
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363 }
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364
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365 public void onSuccess(Artifact artifact) {
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366 GWT.log("Successfully step back to '" + target + "'");
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367
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368 old.clear();
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369 oldItems.removeMembers(oldItems.getMembers());
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370
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371 setArtifact(artifact);
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372 }
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373 }
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374 );
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375 }
72
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376
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377
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378 /**
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379 * Implements the onCollectionChange() method to do update the GUI after the
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380 * parameterization has changed.
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381 *
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382 * @param event The ParameterChangeEvent.
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383 */
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384 public void onParameterChange(ParameterChangeEvent event) {
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385 GWT.log("ParameterList.onParameterChange");
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386
83
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387 for (Canvas c: helperPanel.getChildren()) {
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388 helperPanel.removeChild(c);
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389 }
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390
72
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391 Artifact art = event.getNewValue();
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392 ArtifactDescription desc = art.getArtifactDescription();
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393
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394 DataList currentData = desc.getCurrentData();
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395 if (currentData != null) {
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396 // the user has to enter some attributes
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397 String uiProvider = currentData.getUIProvider();
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398 UIProvider provider = UIProviderFactory.getProvider(uiProvider);
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399
83
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400 provider.setContainer(helperPanel);
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401
73
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402 ((HasStepForwardHandlers) provider).addStepForwardHandler(this);
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403 ((HasStepBackHandlers) provider).addStepBackHandler(this);
72
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404
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405 setCurrentData(currentData, provider);
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406 }
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407 else {
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408 // we have reached a final state with no more user input
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409 setCurrentData(null, null);
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410 }
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411
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412 addOldDatas(desc.getOldData());
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413 }
23
dc086030e6a3 The CollectionView is able to create new instances of a WINFO artifact and to display the artifact's state.
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414 }
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415 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org