Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/ParameterList.java @ 215:e02f50a3ad59

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Improved the exception handling of artifact / collection specific operations. Warning dialog are displayed after such an exception. flys-client/trunk@1657 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 08 Apr 2011 08:51:28 +0000
parents b92281182c6b
children a4a68b4ee2a3
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.util.SC;
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11 import com.smartgwt.client.widgets.Canvas;
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12 import com.smartgwt.client.widgets.layout.HLayout;
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13 import com.smartgwt.client.widgets.layout.VLayout;
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14 import com.smartgwt.client.widgets.tab.Tab;
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16 import de.intevation.flys.client.shared.model.Artifact;
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17 import de.intevation.flys.client.shared.model.ArtifactDescription;
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18 import de.intevation.flys.client.shared.model.Data;
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19 import de.intevation.flys.client.shared.model.DataItem;
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20 import de.intevation.flys.client.shared.model.DataList;
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21 import de.intevation.flys.client.shared.model.DefaultData;
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22 import de.intevation.flys.client.shared.model.DefaultDataItem;
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23 import de.intevation.flys.client.shared.model.River;
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24 import de.intevation.flys.client.client.Config;
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25 import de.intevation.flys.client.client.FLYS;
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26 import de.intevation.flys.client.client.FLYSConstants;
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27 import de.intevation.flys.client.client.event.HasParameterChangeHandler;
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28 import de.intevation.flys.client.client.event.HasStepBackHandlers;
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29 import de.intevation.flys.client.client.event.HasStepForwardHandlers;
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30 import de.intevation.flys.client.client.event.ParameterChangeEvent;
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31 import de.intevation.flys.client.client.event.ParameterChangeHandler;
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32 import de.intevation.flys.client.client.event.StepBackEvent;
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33 import de.intevation.flys.client.client.event.StepBackHandler;
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34 import de.intevation.flys.client.client.event.StepForwardEvent;
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35 import de.intevation.flys.client.client.event.StepForwardHandler;
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36 import de.intevation.flys.client.client.services.AdvanceService;
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37 import de.intevation.flys.client.client.services.AdvanceServiceAsync;
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38 import de.intevation.flys.client.client.services.ArtifactService;
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39 import de.intevation.flys.client.client.services.ArtifactServiceAsync;
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40 import de.intevation.flys.client.client.services.StepForwardService;
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41 import de.intevation.flys.client.client.services.StepForwardServiceAsync;
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43
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44 public class ParameterList
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45 extends Tab
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46 implements StepBackHandler, StepForwardHandler, ParameterChangeHandler,
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47 HasParameterChangeHandler
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48 {
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49 /** The message class that provides i18n strings.*/
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50 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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52 /** The ArtifactService used to communicate with the Artifact server. */
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53 protected ArtifactServiceAsync artifactService =
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54 GWT.create(ArtifactService.class);
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55
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56 /** The StepForwardService used to put data into an existing artifact. */
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57 protected StepForwardServiceAsync forwardService =
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58 GWT.create(StepForwardService.class);
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59
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60 /** The StepForwardService used to put data into an existing artifact. */
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61 protected AdvanceServiceAsync advanceService =
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62 GWT.create(AdvanceService.class);
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64
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65 /** The list of ParameterizationChangeHandler.*/
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66 protected List<ParameterChangeHandler> parameterHandlers;
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67
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68 protected FLYS flys;
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69
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70 protected CollectionView cView;
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71
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72 protected Artifact artifact;
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73
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74 protected List<DataList> old;
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75 protected DataList current;
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77 protected UIProvider uiProvider;
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79 protected VLayout oldItems;
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80 protected VLayout currentItems;
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81 protected Canvas helperPanel;
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82
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83 public ParameterList(FLYS flys, CollectionView cView, String title) {
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84 super(title);
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85
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86 this.cView = cView;
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87 this.flys = flys;
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88
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89 parameterHandlers = new ArrayList<ParameterChangeHandler>();
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90 old = new ArrayList<DataList>();
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91 oldItems = new VLayout();
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92 currentItems = new VLayout();
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94 init();
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95 }
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98 protected void init() {
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99 HLayout rootLayout = new HLayout();
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100 rootLayout.setMembersMargin(20);
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101
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102 VLayout left = new VLayout();
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103
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104 if (old == null || old.size() == 0) {
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105 oldItems.setHeight(0);
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106 }
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107
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108 oldItems.setMembersMargin(10);
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109 currentItems.setAlign(VerticalAlignment.TOP);
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110
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111 left.setMembersMargin(20);
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112 left.setWidth(300);
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114 left.addMember(oldItems);
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115 left.addMember(currentItems);
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116
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117 // This canvas is used to render helper widgets
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118 helperPanel = new Canvas();
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119
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120 rootLayout.addMember(left);
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121 rootLayout.addMember(helperPanel);
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122
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123 Canvas moduleSelection = renderNew();
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124 moduleSelection.setLayoutAlign(VerticalAlignment.TOP);
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125 currentItems.addMember(moduleSelection);
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126
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127 setPane(rootLayout);
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128 }
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129
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130
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131 protected void setArtifact(Artifact artifact) {
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132 Artifact tmp = this.artifact;
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133 this.artifact = artifact;
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134
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135 fireParameterChangeEvent(tmp, this.artifact);
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136 }
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137
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138
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139 /**
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140 * This method registers a new ParameterChangeHandler.
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141 *
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142 * @param handler The new ParameterChangeHandler.
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143 */
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144 public void addParameterChangeHandler(ParameterChangeHandler handler) {
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145 if (handler != null) {
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146 parameterHandlers.add(handler);
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147 }
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148 }
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149
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150
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151 /**
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152 * This method calls the <code>onParameterChange()</code> method of all
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153 * registered ParameterChangeHandler.
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154 */
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155 protected void fireParameterChangeEvent(Artifact old, Artifact newArt) {
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156 for (ParameterChangeHandler handler: parameterHandlers) {
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157 handler.onParameterChange(new ParameterChangeEvent(old, newArt));
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158 }
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159 }
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160
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161
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162 /**
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163 * This method creates a Canvas displaying the plugins of FLYS combined with
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164 * a widget to select a river.
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165 *
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166 * @return a Canvas that displays the supported plugins and rivers of FLYS.
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167 */
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168 protected Canvas renderNew() {
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169 River[] rivers = flys.getRivers();
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170 DataItem[] items = new DataItem[rivers.length];
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171
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172 int i = 0;
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173 for (River river: rivers) {
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174 String name = river.getName();
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175 items[i++] = new DefaultDataItem(name, null, name);
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176 }
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177
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178 Data data = new DefaultData(
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179 "river",
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180 MSG.river_selection(),
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181 null,
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182 items);
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183
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184 ModuleSelection widget = new ModuleSelection();
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185 HasStepForwardHandlers handler = (HasStepForwardHandlers) widget;
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186
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187 widget.setContainer(helperPanel);
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188
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189 handler.addStepForwardHandler(new StepForwardHandler() {
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190 public void onStepForward(StepForwardEvent event) {
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191 Data[] data = event.getData();
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192
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193 DataItem[] moduleItems = data[0].getItems();
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194 DataItem[] riversItems = data[1].getItems();
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195
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196 String module = moduleItems[0].getStringValue();
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197 String river = riversItems[0].getStringValue();
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198
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199 if (module == null) {
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200 // TODO throw / show error!
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201 return;
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202 }
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203
102
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204 String newTitle = MSG.getString(module);
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205 setTitle(newTitle);
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206
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207 final String serverUrl = Config.getInstance().getServerUrl();
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208 final Data[] feedData = new Data[] { data[1] };
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209 artifactService.create(
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210 serverUrl, module.toLowerCase(),
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211 new AsyncCallback<Artifact>() {
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212 public void onFailure(Throwable caught) {
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213 GWT.log("Could not create the new artifact.");
215
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214 SC.warn(MSG.getString(caught.getMessage()));
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215 }
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216
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217 public void onSuccess(Artifact artifact) {
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218 GWT.log("Successfully created a new artifact.");
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219
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220 forwardService.go(serverUrl, artifact, feedData,
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221 new AsyncCallback<Artifact>() {
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222 public void onFailure(Throwable caught) {
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223 GWT.log("Could not feed the artifact.");
215
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224 SC.warn(caught.getMessage());
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225 }
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226
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227 public void onSuccess(Artifact artifact) {
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228 GWT.log("Successfully feed the artifact.");
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229 setArtifact(artifact);
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230 }
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231 });
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232 }
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233 });
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234 }
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235 });
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236
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237 DataList list = new DataList();
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238 list.add(data);
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239
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240 return widget.create(list);
23
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241 }
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242
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243
38
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244 protected void clearOldData() {
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245 old.clear();
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246 }
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247
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248
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249 public void addOldData(DataList old) {
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250 if (old != null) {
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251 this.old.add(old);
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252 }
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253
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254 refreshOld();
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255 }
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256
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257
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258 public void addOldDatas(DataList[] old) {
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259 if (old != null && old.length > 0) {
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260 for (DataList o: old) {
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261 if (!exists(o)) {
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262 GWT.log("Data '" + o.getLabel() + "' is new.");
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263 addOldData(o);
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264 }
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265 }
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266
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267 return;
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268 }
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269
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270 addOldData(null);
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271 }
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272
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273
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274 public boolean exists(DataList data) {
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275 String stateName = data.getState();
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276
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277 for (DataList o: old) {
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278 if (stateName.equals(o.getState())) {
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279 return true;
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280 }
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281 }
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282
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283 return false;
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284 }
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285
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286
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287 public void setCurrentData(DataList current, UIProvider uiProvider) {
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288 this.current = current;
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289 this.uiProvider = uiProvider;
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290
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291 refreshCurrent();
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292 }
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293
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294
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295 public void refreshOld() {
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296 // XXX maybe we should not remove all items but just add the newest item
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297 // to the list.
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298 oldItems.removeMembers(oldItems.getMembers());
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299
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300 for (DataList dataList: old) {
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301 HLayout h = new HLayout();
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302 h.setAlign(VerticalAlignment.TOP);
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303 h.setHeight(20);
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304
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305 String provider = dataList.getUIProvider();
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306 UIProvider uiprovider = UIProviderFactory.getProvider(provider);
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307 ((HasStepBackHandlers) uiprovider).addStepBackHandler(this);
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308
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309 oldItems.addMember(uiprovider.createOld(dataList));
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310 }
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311
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312 int minHeight = oldItems.getMinHeight();
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313 if (minHeight <= 20) {
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314 oldItems.setHeight(20);
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315 }
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316 else {
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317 oldItems.setHeight(minHeight);
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318 }
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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 * This method refreshes the part displaying the data of the current state.
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324 * The UI is created using the UIProvider stored in the Data object.
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325 */
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326 public void refreshCurrent() {
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327 currentItems.removeMembers(currentItems.getMembers());
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328
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329 if (current != null && uiProvider != null) {
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330 Canvas c = uiProvider.create(current);
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331 c.setLayoutAlign(VerticalAlignment.TOP);
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332
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333 currentItems.addMember(c);
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334 }
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335 }
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336
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337
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338 /**
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339 * This method is called if the user clicks on the 'next' button to advance
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340 * to the next state.
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341 *
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342 * @param event The StepForwardEvent.
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343 */
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344 public void onStepForward(StepForwardEvent event) {
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345 GWT.log("CollectionView - onStepForward()");
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346 String serverUrl = Config.getInstance().getServerUrl();
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347
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348 forwardService.go(serverUrl, artifact, event.getData(),
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349 new AsyncCallback<Artifact>() {
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350 public void onFailure(Throwable caught) {
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351 GWT.log("Could not feed the artifact.");
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352 SC.warn(MSG.getString(caught.getMessage()));
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353 }
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354
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355 public void onSuccess(Artifact artifact) {
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356 GWT.log("Successfully feed the artifact.");
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357 setArtifact(artifact);
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358 }
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359 });
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360 }
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361
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362
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363 /**
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364 * This method is used to remove all old items from this list after the user
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365 * has clicked the step back button.
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366 *
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367 * @param e The StepBackEvent that holds the identifier of the target state.
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368 */
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369 public void onStepBack(StepBackEvent e) {
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370 final String target = e.getTarget();
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371 final String serverUrl = Config.getInstance().getServerUrl();
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372
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373 advanceService.advance(serverUrl, artifact, target,
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374 new AsyncCallback<Artifact>() {
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375 public void onFailure(Throwable caught) {
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376 GWT.log("Could not go back to '" + target + "'");
215
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377 SC.warn(MSG.getString(caught.getMessage()));
73
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378 }
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379
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380 public void onSuccess(Artifact artifact) {
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381 GWT.log("Successfully step back to '" + target + "'");
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382
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383 old.clear();
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384 oldItems.removeMembers(oldItems.getMembers());
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385
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386 setArtifact(artifact);
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387 }
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388 }
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389 );
60
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390 }
72
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391
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392
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393 /**
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394 * Implements the onCollectionChange() method to do update the GUI after the
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395 * parameterization has changed.
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396 *
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397 * @param event The ParameterChangeEvent.
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398 */
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399 public void onParameterChange(ParameterChangeEvent event) {
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400 GWT.log("ParameterList.onParameterChange");
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401
83
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402 for (Canvas c: helperPanel.getChildren()) {
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403 helperPanel.removeChild(c);
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404 }
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405
72
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406 Artifact art = event.getNewValue();
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407 ArtifactDescription desc = art.getArtifactDescription();
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408
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409 DataList currentData = desc.getCurrentData();
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410 if (currentData != null) {
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411 // the user has to enter some attributes
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412 String uiProvider = currentData.getUIProvider();
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413 UIProvider provider = UIProviderFactory.getProvider(uiProvider);
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414
83
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415 provider.setContainer(helperPanel);
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416
73
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417 ((HasStepForwardHandlers) provider).addStepForwardHandler(this);
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418 ((HasStepBackHandlers) provider).addStepBackHandler(this);
72
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419
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420 setCurrentData(currentData, provider);
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421 }
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422 else {
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423 // we have reached a final state with no more user input
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424 setCurrentData(null, null);
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425 }
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426
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427 addOldDatas(desc.getOldData());
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428 }
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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429 }
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430 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org