Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/AbstractUIProvider.java @ 516:ba606e575663
ISSUE-85 (part II/III) Repaired broken location/range panel.
flys-client/trunk@1987 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Tue, 24 May 2011 10:52:00 +0000 |
parents | 4a684d29404f |
children | 9f16ac843dda |
rev | line source |
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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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8 import com.smartgwt.client.widgets.Canvas; |
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9 import com.smartgwt.client.widgets.Img; |
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10 import com.smartgwt.client.widgets.events.ClickEvent; |
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11 import com.smartgwt.client.widgets.events.ClickHandler; |
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12 import com.smartgwt.client.widgets.Button; |
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13 |
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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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14 import de.intevation.flys.client.client.FLYSConstants; |
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15 import de.intevation.flys.client.client.event.HasStepBackHandlers; |
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16 import de.intevation.flys.client.client.event.HasStepForwardHandlers; |
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17 import de.intevation.flys.client.client.event.StepBackEvent; |
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18 import de.intevation.flys.client.client.event.StepBackHandler; |
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19 import de.intevation.flys.client.client.event.StepForwardEvent; |
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20 import de.intevation.flys.client.client.event.StepForwardHandler; |
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21 import de.intevation.flys.client.shared.model.Data; |
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Implemented the createOld() of WQAdaptedInputPanel.
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22 import de.intevation.flys.client.shared.model.DataItem; |
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Introduced a data structure DataList to manage to list of Data objects of a single state.
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23 import de.intevation.flys.client.shared.model.DataList; |
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24 import de.intevation.flys.client.shared.model.Artifact; |
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25 |
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26 /** |
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27 * An abstract UIProvider that provides some basic methods. |
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28 * |
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29 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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30 */ |
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31 public abstract class AbstractUIProvider |
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32 implements UIProvider, HasStepForwardHandlers, ClickHandler, |
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33 HasStepBackHandlers |
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34 { |
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35 /** The message class that provides i18n strings.*/ |
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36 protected FLYSConstants MSG = GWT.create(FLYSConstants.class); |
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37 |
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38 |
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39 /** The StepForwardHandlers.*/ |
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40 protected List<StepForwardHandler> forwardHandlers; |
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41 |
60
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42 /** The StepForwardHandlers.*/ |
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43 protected List<StepBackHandler> backHandlers; |
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44 |
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Improved the positioning of helper widgets and some layout specific stuff.
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45 /** The container that is used to position helper widgets.*/ |
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46 protected Canvas helperContainer; |
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47 |
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48 /** The artifact that contains status information.*/ |
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49 protected Artifact artifact; |
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50 |
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51 /** |
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52 * Creates a new UIProvider instance of this class. |
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53 */ |
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54 public AbstractUIProvider() { |
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55 forwardHandlers = new ArrayList<StepForwardHandler>(); |
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56 backHandlers = new ArrayList<StepBackHandler>(); |
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57 } |
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58 |
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59 |
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60 /** |
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61 * Appends a StepBackHandler that wants to listen to StepBackEvents. |
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62 * |
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63 * @param handler A new StepBackHandler. |
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64 */ |
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65 public void addStepBackHandler(StepBackHandler handler) { |
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66 if (handler != null) { |
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67 backHandlers.add(handler); |
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68 } |
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69 } |
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70 |
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71 |
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72 /** |
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73 * Appends a StepForwardHandler that wants to listen to StepForwardEvents. |
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74 * |
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75 * @param handler A new StepForwardHandler. |
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76 */ |
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77 public void addStepForwardHandler(StepForwardHandler handler) { |
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78 if (handler != null) { |
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79 forwardHandlers.add(handler); |
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80 } |
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81 } |
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82 |
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83 |
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84 /** |
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85 * This method is called after the user has clicked one of the buttons to |
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86 * step back to a previous state. |
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87 * |
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88 * @param e The StepBackEvent. |
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89 */ |
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90 protected void fireStepBackEvent(StepBackEvent e) { |
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91 GWT.log("AbstractUIProvider - fireStepBackEvent() handlers: " + backHandlers.size()); |
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92 for (StepBackHandler handler: backHandlers) { |
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93 handler.onStepBack(e); |
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94 } |
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95 } |
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96 |
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97 |
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98 /** |
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99 * This method is called after the user has clicked on the 'next' button to |
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100 * step to the next state. |
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101 * |
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102 * @param e The StepForwardEvent. |
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103 */ |
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104 protected void fireStepForwardEvent(StepForwardEvent e) { |
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105 GWT.log("AbstractUIProvider - fireStepForwardEvent() handlers: " + forwardHandlers.size()); |
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106 for (StepForwardHandler handler: forwardHandlers) { |
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107 handler.onStepForward(e); |
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108 } |
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109 } |
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110 |
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111 |
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112 /** |
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113 * This method is used to listen to click events on the 'next' button. The |
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114 * fireStepForwardEvent() method is called here. |
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115 * |
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116 * @param e The click event. |
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117 */ |
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118 public void onClick(ClickEvent e) { |
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119 Data[] data = getData(); |
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120 |
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121 fireStepForwardEvent(new StepForwardEvent(data)); |
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122 } |
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123 |
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124 |
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125 /** |
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126 * Creates the 'next' button to step forward to the next state. |
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127 * |
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128 * @return the 'next' button. |
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129 */ |
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130 protected Canvas getNextButton() { |
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131 Button next = new Button(MSG.buttonNext()); |
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132 next.addClickHandler(this); |
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133 |
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134 return next; |
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135 } |
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136 |
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137 |
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138 /** |
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139 * Creates the 'back' button to step back to a previous state. |
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140 * |
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141 * @param targetState The identifier of the target state. |
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142 * |
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143 * @return the 'back' button. |
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144 */ |
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145 protected Canvas getBackButton(final String targetState) { |
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146 String url = GWT.getHostPageBaseURL() + MSG.imageBack(); |
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147 Img back = new Img(url, 16, 16); |
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148 |
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149 back.addClickHandler(new ClickHandler() { |
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150 public void onClick(ClickEvent event) { |
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151 fireStepBackEvent(new StepBackEvent(targetState)); |
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152 } |
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153 }); |
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154 |
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155 return back; |
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156 } |
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157 |
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158 |
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159 /** |
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160 * This method injects a container that is used to position helper widgets. |
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161 * |
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162 * @param helperContainer A container that is used to position helper |
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163 * widgets. |
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164 */ |
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165 public void setContainer(Canvas helperContainer) { |
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166 this.helperContainer = helperContainer; |
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167 } |
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168 |
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169 |
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170 /** |
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171 * This method injects an artifact that contains the status information. |
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172 * |
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173 * @param art An artifact containing status information. |
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174 */ |
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175 public void setArtifact(Artifact art) { |
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176 this.artifact = art; |
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177 } |
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178 |
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179 |
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180 /** |
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181 * This method greps the Data with name <i>name</i> from the list and |
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182 * returns it. |
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183 * |
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184 * @param items A list of Data. |
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185 * @param name The name of the Data that we are searching for. |
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186 * |
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187 * @return the Data with the name <i>name</i>. |
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188 */ |
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189 protected Data getData(List<Data> data, String name) { |
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190 for (Data d: data) { |
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191 if (name.equals(d.getLabel())) { |
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192 return d; |
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193 } |
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194 } |
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195 |
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196 return null; |
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197 } |
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198 |
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199 /** |
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200 * This method greps the DataItem with name <i>name</i> from the list and |
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201 * returns it. |
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202 * |
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203 * @param items A list of DataItems. |
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204 * @param name The name of the DataItem that we are searching for. |
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205 * |
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206 * @return the DataItem with the name <i>name</i>. |
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207 */ |
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208 protected DataItem getDataItem(DataItem[] items, String name) { |
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209 for (DataItem item: items) { |
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210 if (name.equals(item.getLabel())) { |
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211 return item; |
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212 } |
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213 } |
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214 |
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215 return null; |
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216 } |
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217 |
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218 |
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219 /** |
41
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220 * This method needs to be implemented by concrete subclasses. It should |
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221 * create a new Canvas object with a representation of <i>data</i>. |
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222 * |
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223 * @param data The data that should be displayed. |
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224 * |
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225 * @return a Canvas object that displays <i>data</i>. |
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226 */ |
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227 public abstract Canvas create(DataList data); |
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228 |
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229 |
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230 /** |
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231 * This method needs to be implemented by concrete subclasses. It should |
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232 * return the selected data. |
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233 * |
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234 * @return the selected data. |
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235 */ |
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236 protected abstract Data[] getData(); |
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237 } |
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238 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |