Mercurial > dive4elements > river

annotate gwt-client/src/main/java/org/dive4elements/river/client/client/ui/AbstractUIProvider.java @ 9237:972e10522ed6

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salix.supraregional ui
author gernotbelger
date Tue, 10 Jul 2018 11:24:12 +0200
parents aafae1ab25f0
children 82c67b859aa7
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.client.client.ui;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13
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14 import org.dive4elements.river.client.client.FLYS;
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15 import org.dive4elements.river.client.client.FLYSConstants;
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16 import org.dive4elements.river.client.client.event.HasStepBackHandlers;
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17 import org.dive4elements.river.client.client.event.HasStepForwardHandlers;
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18 import org.dive4elements.river.client.client.event.StepBackEvent;
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19 import org.dive4elements.river.client.client.event.StepBackHandler;
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20 import org.dive4elements.river.client.client.event.StepForwardEvent;
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21 import org.dive4elements.river.client.client.event.StepForwardHandler;
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22 import org.dive4elements.river.client.shared.model.Artifact;
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23 import org.dive4elements.river.client.shared.model.ArtifactDescription;
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24 import org.dive4elements.river.client.shared.model.Collection;
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25 import org.dive4elements.river.client.shared.model.Data;
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26 import org.dive4elements.river.client.shared.model.DataItem;
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27 import org.dive4elements.river.client.shared.model.DataList;
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28 import org.dive4elements.river.client.shared.model.DefaultData;
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29 import org.dive4elements.river.client.shared.model.DefaultDataItem;
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30
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31 import com.google.gwt.core.client.GWT;
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32 import com.smartgwt.client.util.SC;
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33 import com.smartgwt.client.widgets.Button;
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34 import com.smartgwt.client.widgets.Canvas;
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35 import com.smartgwt.client.widgets.Img;
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36 import com.smartgwt.client.widgets.events.ClickEvent;
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37 import com.smartgwt.client.widgets.events.ClickHandler;
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38 import com.smartgwt.client.widgets.layout.VLayout;
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39
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40 /**
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41 * An abstract UIProvider that provides some basic methods.
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42 *
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43 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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44 */
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45 public abstract class AbstractUIProvider implements UIProvider, HasStepForwardHandlers, ClickHandler, HasStepBackHandlers {
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46 private static final long serialVersionUID = -1610874613377494184L;
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47
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48 /** The message class that provides i18n strings. */
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49 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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50
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51 /** The StepForwardHandlers. */
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52 protected List<StepForwardHandler> forwardHandlers;
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53
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54 /** The StepForwardHandlers. */
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55 protected List<StepBackHandler> backHandlers;
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56
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57 /** The container that is used to position helper widgets. */
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58 protected VLayout helperContainer;
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59
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60 /** The artifact that contains status information. */
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61 protected Artifact artifact;
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62
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63 /** The Collection. */
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64 protected Collection collection;
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65
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66 /** The ParameterList. */
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67 protected ParameterList parameterList;
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68
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69 /**
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70 * Creates a new UIProvider instance of this class.
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71 */
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72 public AbstractUIProvider() {
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73 this.forwardHandlers = new ArrayList<StepForwardHandler>();
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74 this.backHandlers = new ArrayList<StepBackHandler>();
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75 }
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76
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77 /**
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78 * Appends a StepBackHandler that wants to listen to StepBackEvents.
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79 *
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80 * @param handler
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81 * A new StepBackHandler.
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82 */
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83 @Override
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84 public void addStepBackHandler(final StepBackHandler handler) {
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85 if (handler != null) {
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86 this.backHandlers.add(handler);
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87 }
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88 }
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89
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90 /**
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91 * Appends a StepForwardHandler that wants to listen to StepForwardEvents.
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92 *
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93 * @param handler
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94 * A new StepForwardHandler.
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95 */
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96 @Override
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97 public void addStepForwardHandler(final StepForwardHandler handler) {
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98 if (handler != null) {
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99 this.forwardHandlers.add(handler);
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100 }
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101 }
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102
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103 /**
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104 * This method is called after the user has clicked one of the buttons to
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105 * step back to a previous state.
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106 *
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107 * @param e
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108 * The StepBackEvent.
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109 */
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110 protected void fireStepBackEvent(final StepBackEvent e) {
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111 GWT.log("AbstractUIProvider - fireStepBackEvent() handlers: " + this.backHandlers.size());
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112 for (final StepBackHandler handler : this.backHandlers) {
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113 handler.onStepBack(e);
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114 }
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115 }
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116
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117 /**
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118 * This method is called after the user has clicked on the 'next' button to
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119 * step to the next state.
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120 *
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121 * @param e
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122 * The StepForwardEvent.
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123 */
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124 protected void fireStepForwardEvent(final StepForwardEvent e) {
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125 GWT.log("AbstractUIProvider - fireStepForwardEvent() handlers: " + this.forwardHandlers.size());
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126 for (final StepForwardHandler handler : this.forwardHandlers) {
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127 handler.onStepForward(e);
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128 }
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129 }
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130
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131 /**
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132 * This method is used to listen to click events on the 'next' button. The
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133 * fireStepForwardEvent() method is called here.
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134 *
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135 * @param e
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136 * The click event.
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137 */
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138 @Override
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139 public void onClick(final ClickEvent e) {
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140 final List<String> errors = validate();
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141 if (errors == null || errors.isEmpty()) {
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142 final Data[] data = getData();
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143 fireStepForwardEvent(new StepForwardEvent(data));
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144 } else {
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145 showErrors(errors);
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146 }
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147 }
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148
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149 protected void showErrors(final List<String> errors) {
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150 final StringBuilder sb = new StringBuilder();
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151
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152 for (final String error : errors) {
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153 sb.append(error);
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154 sb.append("<br>");
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155 }
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156
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157 SC.warn(sb.toString());
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158 }
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159
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160 /**
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161 * Creates the 'next' button to step forward to the next state.
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162 *
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163 * @return the 'next' button.
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164 */
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165 protected Canvas getNextButton() {
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166 final Button next = new Button(this.MSG.buttonNext());
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167 next.addClickHandler(this);
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168
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169 return next;
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170 }
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171
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172 @Override
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173 public Canvas createHelpLink(final DataList dataList, final Data data, final FLYS instance) {
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174 final String iUrl = GWT.getHostPageBaseURL() + this.MSG.getFeatureInfo();
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175 final String helpUrl = dataList.getHelpText();
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176
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177 return new WikiImgLink(iUrl, helpUrl, 30, 30, instance);
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178 }
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179
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180 /**
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181 * Creates the 'back' button to step back to a previous state.
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182 *
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183 * @param targetState
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184 * The identifier of the target state.
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185 *
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186 * @return the 'back' button.
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187 */
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188 protected Canvas getBackButton(final String targetState) {
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189 final String url = GWT.getHostPageBaseURL() + this.MSG.imageBack();
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190 final Img back = new Img(url, 16, 16);
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191
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192 back.addClickHandler(new ClickHandler() {
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193 @Override
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194 public void onClick(final ClickEvent event) {
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195 fireStepBackEvent(new StepBackEvent(targetState));
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196 }
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197 });
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198
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199 return back;
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200 }
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201
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202 /**
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203 * This method injects a container that is used to position helper widgets.
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204 *
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205 * @param helperContainer
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206 * A container that is used to position helper
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207 * widgets.
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208 */
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209 @Override
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210 public void setContainer(final VLayout helperContainer) {
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211 this.helperContainer = helperContainer;
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212 }
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213
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214 /**
233
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215 * This method injects an artifact that contains the status information.
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216 *
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217 * @param art
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218 * An artifact containing status information.
233
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219 */
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220 @Override
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221 public void setArtifact(final Artifact art) {
233
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222 this.artifact = art;
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223 }
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224
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225 @Override
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226 public void setCollection(final Collection collection) {
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227 this.collection = collection;
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228 }
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229
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230 @Override
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231 public void setParameterList(final ParameterList list) {
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232 this.parameterList = list;
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233 }
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234
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235 public Collection getCollection() {
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236 return this.collection;
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237 }
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238
233
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239 /**
247
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240 * This method greps the Data with name <i>name</i> from the list and
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241 * returns it.
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242 *
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243 * @param items
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244 * A list of Data.
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245 * @param name
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246 * The name of the Data that we are searching for.
247
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247 *
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248 * @return the Data with the name <i>name</i>.
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249 */
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250 protected Data getData(final List<Data> data, final String name) {
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251 for (final Data d : data) {
247
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252 if (name.equals(d.getLabel())) {
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253 return d;
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254 }
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255 }
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256 return null;
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257 }
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258
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259 protected String getDataValue(final String state, final String name) {
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260 final ArtifactDescription desc = this.artifact.getArtifactDescription();
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261
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262 final DataList[] old = desc.getOldData();
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263
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264 for (final DataList list : old) {
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265 if (list == null) {
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266 continue;
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267 }
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268 final Data d = getData(list.getAll(), name);
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269
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270 if (d != null) {
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271 return d.getItems()[0].getStringValue();
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272 }
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273 }
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274
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275 return null;
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276 }
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277
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278 /**
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279 * This method greps the DataItem with name <i>name</i> from the list and
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280 * returns it.
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281 *
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282 * @param items
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283 * A list of DataItems.
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284 * @param name
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285 * The name of the DataItem that we are searching for.
247
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286 *
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287 * @return the DataItem with the name <i>name</i>.
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288 */
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289 protected DataItem getDataItem(final DataItem[] items, final String name) {
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290 for (final DataItem item : items) {
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291 if (name.equals(item.getLabel())) {
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292 return item;
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293 }
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294 }
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295
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296 return null;
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297 }
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298
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299 /**
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300 * Validates the selection.
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301 *
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302 * @return List of internationalized errror messages (if any).
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303 */
562
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304 public List<String> validate() {
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305 return new ArrayList<String>(); // FIXME: What's this?
562
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306 }
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307
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308 /** Create simple DefaultData with single DataItem inside. */
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309 public static DefaultData createDataArray(final String name, final String value) {
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310 final DataItem item = new DefaultDataItem(name, name, value);
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311
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312 return new DefaultData(name, null, null, new DataItem[] { item });
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313 }
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314
247
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315 /**
41
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316 * This method needs to be implemented by concrete subclasses. It should
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317 * create a new Canvas object with a representation of <i>data</i>.
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318 *
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319 * @param data
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320 * The data that should be displayed.
41
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321 *
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322 * @return a Canvas object that displays <i>data</i>.
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323 */
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324 @Override
51
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325 public abstract Canvas create(DataList data);
41
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326
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327 /**
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328 * This method needs to be implemented by concrete subclasses. It should
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329 * return the selected data.
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330 *
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331 * @return the selected data.
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332 */
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333 protected abstract Data[] getData();
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334
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335 protected String getRiverName() {
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336 final ArtifactDescription adescr = this.artifact.getArtifactDescription();
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337 return adescr.getRiver();
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338 }
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339
41
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340 }
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341 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org