Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/LoadingPanel.java @ 4131:360e22afb98b

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Cosmetics, warnings and minor TODOs.
author Christian Lins <christian.lins@intevation.de>
date Mon, 15 Oct 2012 00:04:35 +0200
parents 40f4137a2c31
children
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 com.google.gwt.core.client.GWT;
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4 import com.google.gwt.user.client.Timer;
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5 import com.google.gwt.user.client.rpc.AsyncCallback;
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6
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7 import com.smartgwt.client.types.Alignment;
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8 import com.smartgwt.client.types.Positioning;
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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.Img;
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12 import com.smartgwt.client.widgets.Label;
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13 import com.smartgwt.client.widgets.events.ClickEvent;
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14 import com.smartgwt.client.widgets.events.ClickHandler;
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15 import com.smartgwt.client.widgets.layout.HLayout;
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16 import com.smartgwt.client.widgets.layout.VLayout;
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17
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18 import de.intevation.flys.client.client.Config;
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19 import de.intevation.flys.client.client.FLYSConstants;
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20 import de.intevation.flys.client.client.event.HasStepBackHandlers;
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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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23 import de.intevation.flys.client.client.services.DescribeArtifactService;
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24 import de.intevation.flys.client.client.services.DescribeArtifactServiceAsync;
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25 import de.intevation.flys.client.shared.model.Artifact;
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26 import de.intevation.flys.client.shared.model.ArtifactDescription;
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27 import de.intevation.flys.client.shared.model.CalculationMessage;
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28 import de.intevation.flys.client.shared.model.DataList;
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29
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30 import java.util.ArrayList;
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31 import java.util.List;
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32
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33
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34 public class LoadingPanel extends Canvas implements HasStepBackHandlers {
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36 private static final long serialVersionUID = -7806425431408987601L;
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37
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38 public static final int UPDATE_INTERVAL = 1000 * 3;
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39
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40 public static final DescribeArtifactServiceAsync describe =
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41 GWT.create(DescribeArtifactService.class);
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42
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43 private FLYSConstants MSG = GWT.create(FLYSConstants.class);
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44
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45
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46 protected List<StepBackHandler> handlers;
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47
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48 protected CollectionView parent;
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49 protected Artifact artifact;
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50
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51 protected VLayout dialog;
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52 protected HLayout cancelRow;
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53 protected Label msg;
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54 protected Label title;
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55
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56 protected int i;
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57
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58
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59 public LoadingPanel(CollectionView parent, Artifact artifact) {
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60 super();
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61
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62 this.handlers = new ArrayList<StepBackHandler>();
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63 this.parent = parent;
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64 this.artifact = artifact;
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65 this.msg = new Label("");
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66 this.title = new Label("");
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67 this.dialog = createDialog();
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68
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69 this.i = 0;
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70
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71 initLayout();
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72 startTimer();
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73 }
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74
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75
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76 private void initLayout() {
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77 setWidth("100%");
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78 setHeight("98%");
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79 setBackgroundColor("#7f7f7f");
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80 setOpacity(50);
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81 setPosition(Positioning.RELATIVE);
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82
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83 parent.addChild(this);
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84 parent.addChild(dialog);
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85 dialog.moveTo(0, 20);
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86 moveTo(0, 7);
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87 }
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89
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90 public void setArtifact(Artifact artifact) {
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91 this.artifact = artifact;
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92 }
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93
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94
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95 public Artifact getArtifact() {
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96 return artifact;
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97 }
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98
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99
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100 @Override
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101 public void addStepBackHandler(StepBackHandler handler) {
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102 if (handler != null) {
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103 handlers.add(handler);
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104 }
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105 }
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106
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107
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108 /**
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109 * This method is called after the user has clicked the button to cancel the
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110 * current process.
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111 *
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112 * @param e The StepBackEvent.
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113 */
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114 protected void fireStepBackEvent(StepBackEvent e) {
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115 for (StepBackHandler handler: handlers) {
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116 handler.onStepBack(e);
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117 }
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118 }
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119
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120
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121 protected VLayout createDialog() {
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122
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123 String baseUrl = GWT.getHostPageBaseURL();
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124
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125 title.setStyleName("loading-title");
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126 title.setHeight(25);
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127 title.setWidth100();
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128
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129 msg.setStyleName("loading-message");
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130 msg.setValign(VerticalAlignment.TOP);
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131 msg.setWidth100();
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132 msg.setHeight(100);
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133
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134 Img img = new Img(baseUrl + MSG.loadingImg(), 25, 25);
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135
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136 Label cancelLabel = new Label(MSG.cancelCalculationLabel());
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137 Img cancel = new Img(baseUrl + MSG.cancelCalculation(), 25, 25);
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138 cancel.addClickHandler(new ClickHandler() {
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139 @Override
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140 public void onClick(ClickEvent e) {
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141 cancel();
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142 }
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143 });
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144
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145 cancelRow = new HLayout();
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146 cancelRow.setHeight(27);
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147 cancelRow.setWidth100();
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148 cancelRow.addMember(cancel);
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149 cancelRow.addMember(cancelLabel);
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150
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151 VLayout box = new VLayout();
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152 box.setStyleName("loading-box");
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153 box.setAlign(VerticalAlignment.TOP);
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154 box.setDefaultLayoutAlign(VerticalAlignment.TOP);
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155 box.addMember(title);
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156 box.addMember(msg);
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157 box.addMember(cancelRow);
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158 box.setMembersMargin(0);
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159 box.setHeight(125);
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160 box.setWidth(275);
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161
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162 dialog = new VLayout();
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163 dialog.setAlign(Alignment.CENTER);
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164 dialog.setDefaultLayoutAlign(Alignment.CENTER);
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165 dialog.setMembersMargin(5);
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166 dialog.setHeight100();
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167 dialog.setWidth100();
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168
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169 dialog.addMember(img);
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170 dialog.addMember(box);
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171
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172 return dialog;
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173 }
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174
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175
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176 public String getTargetState() {
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177 ArtifactDescription desc = getArtifact().getArtifactDescription();
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178 DataList[] oldData = desc.getOldData();
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179
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180 return oldData[oldData.length -1].getState();
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181 }
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182
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183
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184 private void startTimer() {
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185 Timer t = new Timer() {
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186 @Override
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187 public void run() {
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188 update();
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189 }
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190 };
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191 t.schedule(UPDATE_INTERVAL);
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192 }
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193
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194
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195 protected void update() {
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196 updateMessage();
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197
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198 final Config config = Config.getInstance();
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199 final String locale = config.getLocale();
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200
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201 describe.describe(locale, artifact, new AsyncCallback<Artifact>() {
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202 @Override
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203 public void onFailure(Throwable t) {
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204 GWT.log("Error while DESCRIBE artifact: " + t.getMessage());
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205
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206 startTimer();
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207 }
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208
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209 @Override
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210 public void onSuccess(Artifact artifact) {
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211 GWT.log("Successfully DESCRIBE artifact.");
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212
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213 setArtifact(artifact);
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214
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215 if (artifact.isInBackground()) {
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216 startTimer();
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217 }
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218 else {
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219 finish();
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220 }
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221 }
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222 });
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223 }
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224
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225
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226 protected void updateMessage() {
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227 List<CalculationMessage> messages = artifact.getBackgroundMessages();
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228 if (messages != null && messages.size() > 0) {
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229 CalculationMessage calcMsg = messages.get(0);
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230 title.setContents(getStepTitle(calcMsg));
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231 msg.setContents(calcMsg.getMessage());
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232 }
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233 else {
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234 title.setContents(MSG.calculationStarted());
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235 }
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236 }
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237
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238
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239 protected String getStepTitle(CalculationMessage msg) {
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240 return MSG.step() + " " + msg.getCurrentStep() + "/" + msg.getSteps();
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241 }
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242
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243
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244 private void cancel() {
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245 fireStepBackEvent(new StepBackEvent(getTargetState()));
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246 parent.removeChild(dialog);
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247 parent.removeChild(this);
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248 }
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249
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250
862
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251 private void finish() {
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252 parent.removeChild(dialog);
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253 parent.removeChild(this);
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254 parent.setArtifact(artifact);
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255 }
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256 }
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257 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org