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annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/ParameterList.java @ 72:9b726350ab07

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Moved ParameterList specific code into the ParameterList. flys-client/trunk@1575 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Sat, 26 Mar 2011 18:07:41 +0000
parents f793d35bfb08
children 39210a74db07
rev   line source
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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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6 import com.google.gwt.core.client.GWT;
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7
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8 import com.smartgwt.client.types.VerticalAlignment;
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9 import com.smartgwt.client.widgets.Canvas;
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10 import com.smartgwt.client.widgets.layout.HLayout;
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11 import com.smartgwt.client.widgets.layout.VLayout;
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13 import de.intevation.flys.client.shared.model.Artifact;
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14 import de.intevation.flys.client.shared.model.ArtifactDescription;
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15 import de.intevation.flys.client.shared.model.Data;
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16 import de.intevation.flys.client.shared.model.DataList;
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17 import de.intevation.flys.client.client.event.HasStepBackHandlers;
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18 import de.intevation.flys.client.client.event.HasStepForwardHandlers;
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19 import de.intevation.flys.client.client.event.ParameterChangeEvent;
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20 import de.intevation.flys.client.client.event.ParameterChangeHandler;
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21 import de.intevation.flys.client.client.event.StepBackEvent;
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22 import de.intevation.flys.client.client.event.StepBackHandler;
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25 public class ParameterList
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26 extends VLayout
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27 implements StepBackHandler, ParameterChangeHandler
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28 {
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29 protected CollectionView cView;
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31 protected List<DataList> old;
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32 protected DataList current;
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34 protected UIProvider uiProvider;
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36 protected VLayout oldItems;
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37 protected VLayout currentItems;
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39 public ParameterList(CollectionView cView) {
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40 this.cView = cView;
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41 old = new ArrayList<DataList>();
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42 oldItems = new VLayout();
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43 currentItems = new VLayout();
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45 init();
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46 }
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49 protected void init() {
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50 setWidth(300);
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52 oldItems.setHeight(20);
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53 oldItems.setMembersMargin(10);
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54 currentItems.setHeight("*");
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55 currentItems.setAlign(VerticalAlignment.TOP);
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57 setMembersMargin(20);
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59 addMember(oldItems);
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60 addMember(currentItems);
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61 }
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64 protected void clearOldData() {
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65 old.clear();
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66 }
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69 public void addOldData(DataList old) {
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70 if (old != null) {
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71 this.old.add(old);
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72 }
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74 refreshOld();
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75 }
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78 public void addOldDatas(DataList[] old) {
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79 if (old != null && old.length > 0) {
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80 for (DataList o: old) {
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81 if (!exists(o)) {
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82 GWT.log("Data '" + o.getLabel() + "' is new.");
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83 addOldData(o);
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84 }
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85 }
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87 return;
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88 }
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90 addOldData(null);
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91 }
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94 public boolean exists(DataList data) {
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95 String stateName = data.getState();
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97 for (DataList o: old) {
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98 if (stateName.equals(o.getState())) {
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99 return true;
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100 }
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101 }
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102
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103 return false;
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104 }
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107 public void setCurrentData(DataList current, UIProvider uiProvider) {
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108 this.current = current;
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109 this.uiProvider = uiProvider;
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111 refreshCurrent();
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112 }
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115 public void refreshOld() {
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116 // XXX maybe we should not remove all items but just add the newest item
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117 // to the list.
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118 oldItems.removeMembers(oldItems.getMembers());
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119
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120 for (DataList dataList: old) {
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121 HLayout h = new HLayout();
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122 h.setAlign(VerticalAlignment.TOP);
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123 h.setHeight(20);
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124
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125 String provider = dataList.getUIProvider();
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126 UIProvider uiprovider = UIProviderFactory.getProvider(provider);
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127 ((HasStepBackHandlers) uiprovider).addStepBackHandler(cView);
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128 ((HasStepBackHandlers) uiprovider).addStepBackHandler(this);
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129
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130 oldItems.addMember(uiprovider.createOld(dataList));
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131 }
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132
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133 int minHeight = oldItems.getMinHeight();
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134 if (minHeight <= 20) {
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135 oldItems.setHeight(20);
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136 }
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137 else {
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138 oldItems.setHeight(minHeight);
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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 * This method refreshes the part displaying the data of the current state.
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145 * The UI is created using the UIProvider stored in the Data object.
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146 */
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147 public void refreshCurrent() {
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148 currentItems.removeMembers(currentItems.getMembers());
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149
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150 if (current != null && uiProvider != null) {
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151 Canvas c = uiProvider.create(current);
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152 c.setLayoutAlign(VerticalAlignment.TOP);
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153
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154 currentItems.addMember(c);
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155 }
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156 }
60
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157
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158
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159 /**
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160 * This method is used to remove all old items from this list after the user
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161 * has clicked the step back button.
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162 *
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163 * @param e The StepBackEvent.
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164 */
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165 public void onStepBack(StepBackEvent e) {
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166 old.clear();
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167 oldItems.removeMembers(oldItems.getMembers());
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168 }
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169
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170
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171 /**
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172 * Implements the onCollectionChange() method to do update the GUI after the
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173 * parameterization has changed.
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174 *
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175 * @param event The ParameterChangeEvent.
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176 */
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177 public void onParameterChange(ParameterChangeEvent event) {
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178 GWT.log("ParameterList.onParameterChange");
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179
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180 Artifact art = event.getNewValue();
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181 ArtifactDescription desc = art.getArtifactDescription();
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182
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183 DataList currentData = desc.getCurrentData();
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184 if (currentData != null) {
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185 // the user has to enter some attributes
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186 String uiProvider = currentData.getUIProvider();
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187 UIProvider provider = UIProviderFactory.getProvider(uiProvider);
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188
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189 ((HasStepForwardHandlers) provider).addStepForwardHandler(cView);
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190 ((HasStepBackHandlers) provider).addStepBackHandler(cView);
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191
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192 setCurrentData(currentData, provider);
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193 }
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194 else {
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195 // we have reached a final state with no more user input
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196 setCurrentData(null, null);
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197 }
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198
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199 addOldDatas(desc.getOldData());
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200 }
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201 }
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202 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org