Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/AbstractUIProvider.java @ 915:89a47098bcbd

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Hide geometry layer in floodmap when tab selection changes. (Issue265) flys-client/trunk@2778 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Raimund Renkert <raimund.renkert@intevation.de>
date Fri, 16 Sep 2011 12:56:48 +0000
parents 794d1af42987
children dbdf954dbe94
rev   line source
41
87a44f8e25cc Added a new widget that enables the user to enter a location or a distance in a single step.
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1 package de.intevation.flys.client.client.ui;
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2
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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
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9f16ac843dda Introduced a client side validation before new user data are sent to the server - the range/location panel already implements this validation.
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8 import com.smartgwt.client.util.SC;
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9 import com.smartgwt.client.widgets.Button;
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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.events.ClickEvent;
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13 import com.smartgwt.client.widgets.events.ClickHandler;
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14 import com.smartgwt.client.widgets.layout.VLayout;
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b92281182c6b Removed the FLYSMessages interface and replaced it with a FLYSConstants interface - this interface has the ability to lookup i18n strings with given keys.
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16 import de.intevation.flys.client.client.FLYSConstants;
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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.StepBackEvent;
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20 import de.intevation.flys.client.client.event.StepBackHandler;
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21 import de.intevation.flys.client.client.event.StepForwardEvent;
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22 import de.intevation.flys.client.client.event.StepForwardHandler;
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23 import de.intevation.flys.client.shared.model.Artifact;
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24 import de.intevation.flys.client.shared.model.ArtifactDescription;
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25 import de.intevation.flys.client.shared.model.Collection;
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26 import de.intevation.flys.client.shared.model.Data;
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27 import de.intevation.flys.client.shared.model.DataItem;
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28 import de.intevation.flys.client.shared.model.DataList;
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29
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30 /**
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31 * An abstract UIProvider that provides some basic methods.
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32 *
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33 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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34 */
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35 public abstract class AbstractUIProvider
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36 implements UIProvider, HasStepForwardHandlers, ClickHandler,
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37 HasStepBackHandlers
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38 {
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39 /** The message class that provides i18n strings.*/
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40 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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41
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42
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43 /** The StepForwardHandlers.*/
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44 protected List<StepForwardHandler> forwardHandlers;
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45
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46 /** The StepForwardHandlers.*/
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47 protected List<StepBackHandler> backHandlers;
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48
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49 /** The container that is used to position helper widgets.*/
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50 protected VLayout helperContainer;
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51
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52 /** The artifact that contains status information.*/
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53 protected Artifact artifact;
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54
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55 /** The Collection.*/
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56 protected Collection collection;
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57
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58 /** The ParameterList.*/
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59 protected ParameterList parameterList;
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61 /**
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62 * Creates a new UIProvider instance of this class.
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63 */
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64 public AbstractUIProvider() {
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65 forwardHandlers = new ArrayList<StepForwardHandler>();
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66 backHandlers = new ArrayList<StepBackHandler>();
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67 }
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68
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69
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70 /**
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71 * Appends a StepBackHandler that wants to listen to StepBackEvents.
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72 *
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73 * @param handler A new StepBackHandler.
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74 */
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75 public void addStepBackHandler(StepBackHandler handler) {
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76 if (handler != null) {
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77 backHandlers.add(handler);
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78 }
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79 }
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81
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82 /**
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83 * Appends a StepForwardHandler that wants to listen to StepForwardEvents.
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84 *
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85 * @param handler A new StepForwardHandler.
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86 */
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87 public void addStepForwardHandler(StepForwardHandler handler) {
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88 if (handler != null) {
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89 forwardHandlers.add(handler);
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90 }
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91 }
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93
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94 /**
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95 * This method is called after the user has clicked one of the buttons to
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96 * step back to a previous state.
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97 *
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98 * @param e The StepBackEvent.
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99 */
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100 protected void fireStepBackEvent(StepBackEvent e) {
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101 GWT.log("AbstractUIProvider - fireStepBackEvent() handlers: " + backHandlers.size());
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102 for (StepBackHandler handler: backHandlers) {
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103 handler.onStepBack(e);
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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 on the 'next' button to
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110 * step to the next state.
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111 *
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112 * @param e The StepForwardEvent.
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113 */
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114 protected void fireStepForwardEvent(StepForwardEvent e) {
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115 GWT.log("AbstractUIProvider - fireStepForwardEvent() handlers: " + forwardHandlers.size());
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116 for (StepForwardHandler handler: forwardHandlers) {
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117 handler.onStepForward(e);
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118 }
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119 }
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120
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121
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122 /**
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123 * This method is used to listen to click events on the 'next' button. The
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124 * fireStepForwardEvent() method is called here.
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125 *
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126 * @param e The click event.
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127 */
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128 public void onClick(ClickEvent e) {
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129 List<String> errors = validate();
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130 if (errors == null || errors.isEmpty()) {
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131 Data[] data = getData();
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132 fireStepForwardEvent(new StepForwardEvent(data));
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133 }
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134 else {
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135 showErrors(errors);
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136 }
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137 }
41
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138
562
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139
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140 protected void showErrors(List<String> errors) {
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141 StringBuilder sb = new StringBuilder();
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142
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143 for (String error: errors) {
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144 sb.append(error);
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145 sb.append("<br>");
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146 }
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147
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148 SC.warn(sb.toString());
41
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149 }
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150
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151
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152 /**
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153 * Creates the 'next' button to step forward to the next state.
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154 *
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155 * @return the 'next' button.
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156 */
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157 protected Canvas getNextButton() {
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158 Button next = new Button(MSG.buttonNext());
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159 next.addClickHandler(this);
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160
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161 return next;
57
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162 }
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163
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164
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165 /**
58
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166 * Creates the 'back' button to step back to a previous state.
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167 *
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168 * @param targetState The identifier of the target state.
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169 *
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170 * @return the 'back' button.
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171 */
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172 protected Canvas getBackButton(final String targetState) {
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173 String url = GWT.getHostPageBaseURL() + MSG.imageBack();
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174 Img back = new Img(url, 16, 16);
58
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175
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176 back.addClickHandler(new ClickHandler() {
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177 public void onClick(ClickEvent event) {
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178 fireStepBackEvent(new StepBackEvent(targetState));
58
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179 }
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180 });
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181
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182 return back;
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183 }
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184
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185
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186 /**
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187 * This method injects a container that is used to position helper widgets.
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188 *
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189 * @param helperContainer A container that is used to position helper
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190 * widgets.
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191 */
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192 public void setContainer(VLayout helperContainer) {
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193 this.helperContainer = helperContainer;
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194 }
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195
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196
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197 /**
233
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198 * This method injects an artifact that contains the status information.
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199 *
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200 * @param art An artifact containing status information.
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201 */
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202 public void setArtifact(Artifact art) {
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203 this.artifact = art;
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204 }
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205
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206
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207 public void setCollection(Collection collection) {
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208 this.collection = collection;
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209 }
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210
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211
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212 public void setParameterList(ParameterList list) {
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213 this.parameterList = list;
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214 }
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215
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216
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217 public Collection getCollection() {
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218 return collection;
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219 }
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220
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221
233
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222 /**
247
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223 * This method greps the Data with name <i>name</i> from the list and
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224 * returns it.
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225 *
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226 * @param items A list of Data.
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227 * @param name The name of the Data that we are searching for.
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228 *
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229 * @return the Data with the name <i>name</i>.
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230 */
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231 protected Data getData(List<Data> data, String name) {
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232 for (Data d: data) {
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233 if (name.equals(d.getLabel())) {
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234 return d;
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235 }
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236 }
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237
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238 return null;
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239 }
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240
873
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241
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242 protected String getDataValue(String state, String name) {
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243 ArtifactDescription desc = artifact.getArtifactDescription();
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244
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245 DataList[] old = desc.getOldData();
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246
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247 for (DataList list: old) {
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248 Data d = getData(list.getAll(), name);
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249
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250 if (d != null) {
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251 return d.getItems()[0].getStringValue();
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252 }
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253 }
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254
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255 return null;
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256 }
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257
247
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258 /**
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259 * This method greps the DataItem with name <i>name</i> from the list and
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260 * returns it.
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261 *
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262 * @param items A list of DataItems.
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263 * @param name The name of the DataItem that we are searching for.
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264 *
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265 * @return the DataItem with the name <i>name</i>.
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266 */
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267 protected DataItem getDataItem(DataItem[] items, String name) {
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268 for (DataItem item: items) {
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269 if (name.equals(item.getLabel())) {
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270 return item;
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271 }
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272 }
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273
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274 return null;
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275 }
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276
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277
562
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278 public List<String> validate() {
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279 return new ArrayList<String>();
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280 }
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281
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282
247
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283 /**
41
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284 * This method needs to be implemented by concrete subclasses. It should
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285 * create a new Canvas object with a representation of <i>data</i>.
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286 *
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287 * @param data The data that should be displayed.
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288 *
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289 * @return a Canvas object that displays <i>data</i>.
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290 */
51
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291 public abstract Canvas create(DataList data);
41
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292
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293
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294 /**
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295 * This method needs to be implemented by concrete subclasses. It should
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296 * return the selected data.
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297 *
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298 * @return the selected data.
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299 */
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300 protected abstract Data[] getData();
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301 }
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302 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org