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annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/ProjectList.java @ 585:ab7ec931bae2

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#22 Introduced a polling mechanism to refresh the projects of a user in the project list. flys-client/trunk@2173 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 21 Jun 2011 10:05:04 +0000
parents ad2ba6e2b8bd
children 53ad6dd2cb2b
rev   line source
4
89976499e013 Implemented a ProjectList and added a mockup that displays two collections in that list.
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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.Date;
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4
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5 import com.google.gwt.core.client.GWT;
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6 import com.google.gwt.i18n.client.DateTimeFormat;
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7 import com.google.gwt.user.client.Timer;
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8 import com.google.gwt.user.client.rpc.AsyncCallback;
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9
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10 import com.smartgwt.client.types.Alignment;
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11 import com.smartgwt.client.types.ListGridFieldType;
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12 import com.smartgwt.client.types.SortDirection;
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13 import com.smartgwt.client.util.SC;
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14 import com.smartgwt.client.widgets.Canvas;
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15 import com.smartgwt.client.widgets.Label;
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16 import com.smartgwt.client.widgets.grid.CellFormatter;
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17 import com.smartgwt.client.widgets.grid.ListGrid;
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18 import com.smartgwt.client.widgets.grid.ListGridField;
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19 import com.smartgwt.client.widgets.grid.ListGridRecord;
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20 import com.smartgwt.client.widgets.grid.events.CellDoubleClickEvent;
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21 import com.smartgwt.client.widgets.grid.events.CellDoubleClickHandler;
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22 import com.smartgwt.client.widgets.grid.events.RowContextClickEvent;
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23 import com.smartgwt.client.widgets.grid.events.RowContextClickHandler;
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24 import com.smartgwt.client.widgets.layout.VLayout;
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25 import com.smartgwt.client.widgets.menu.Menu;
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26 import com.smartgwt.client.widgets.menu.MenuItem;
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27 import com.smartgwt.client.widgets.menu.events.MenuItemClickEvent;
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28 import com.smartgwt.client.widgets.menu.events.ClickHandler;
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29 import com.smartgwt.client.types.VerticalAlignment;
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31 import de.intevation.flys.client.shared.model.Collection;
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32 import de.intevation.flys.client.shared.model.CollectionRecord;
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33 import de.intevation.flys.client.shared.model.User;
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34
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35 import de.intevation.flys.client.client.Config;
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36 import de.intevation.flys.client.client.FLYS;
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37 import de.intevation.flys.client.client.FLYSConstants;
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38 import de.intevation.flys.client.client.event.CollectionChangeEvent;
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39 import de.intevation.flys.client.client.event.CollectionChangeHandler;
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40 import de.intevation.flys.client.client.services.UserCollectionsService;
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41 import de.intevation.flys.client.client.services.UserCollectionsServiceAsync;
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43
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44 /**
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45 * The project list shows a list of projects of a specific user.
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46 *
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47 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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48 */
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49 public class ProjectList
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50 extends VLayout
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51 implements CollectionChangeHandler
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52 {
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53 /** Interval to refresh the user's projects.*/
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54 public static final int UPDATE_INTERVAL = 30000;
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55
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56 /** Min Interval to refresh the user's projects.*/
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57 public static final int MIN_UPDATE_INTERVAL = 5000;
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58
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59 /** The interface that provides i18n messages. */
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60 private FLYSConstants messages = GWT.create(FLYSConstants.class);
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62 /** The UserService used to retrieve information about the current user. */
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63 protected UserCollectionsServiceAsync userCollectionsService =
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64 GWT.create(UserCollectionsService.class);
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65
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66 /** A pointer to the FLYS instance.*/
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67 protected FLYS flys;
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68
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69 /** The user whose projects should be displayed.*/
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70 protected User user;
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71
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72 /** The grid that contains the project rows.*/
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73 protected ListGrid grid;
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74
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75 /**
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76 * The default constructor that creates a new ProjectList for a specific
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77 * user.
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78 *
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79 * @param user The user.
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80 */
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81 public ProjectList(FLYS flys, User user) {
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82 this.flys = flys;
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83 this.user = user;
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84
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85 grid = new ListGrid();
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86 initGrid();
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87 init();
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88 initTimer();
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90 updateUserCollections();
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91 }
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93
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94 protected void initGrid() {
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95 grid.setEmptyMessage(messages.no_projects());
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96 grid.setLoadingDataMessage(messages.load_projects());
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97 grid.setShowRecordComponents(true);
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98 grid.setShowRecordComponentsByCell(true);
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99 grid.setCanRemoveRecords(false);
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100 grid.setShowHeader(false);
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101 grid.setWidth100();
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102 grid.setHeight100();
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103 grid.setSortDirection(SortDirection.DESCENDING);
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104 grid.setSortField(0);
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105
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106 ListGridField date = buildDateField();
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107 ListGridField name = buildNameField();
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109 grid.setFields(date, name);
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110
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111 grid.addCellDoubleClickHandler(new CellDoubleClickHandler() {
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112 public void onCellDoubleClick(CellDoubleClickEvent e) {
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113 CollectionRecord record = (CollectionRecord) e.getRecord();
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114 String uuid = record != null
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115 ? record.getCollection().identifier()
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116 : "";
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117 getFlys().openProject(uuid);
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118 }
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119 });
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120
220
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121 grid.addRowContextClickHandler(new RowContextClickHandler() {
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122 public void onRowContextClick(RowContextClickEvent event) {
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123 CollectionRecord record = (CollectionRecord) event.getRecord();
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124
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125 Menu menu = createContextMenu(record);
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126 grid.setContextMenu(menu);
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127 menu.showContextMenu();
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128
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129 event.cancel();
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130 }
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131 });
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132 }
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133
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134
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135 /**
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136 * Initializes a repeating timer that updates the user's collections. The
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137 * interval is specified by the constant <i>UPDATE_INTERVAL</i>.
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138 */
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139 protected void initTimer() {
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140 Config config = Config.getInstance();
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141 int interval = config.getProjectListUpdateInterval();
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142
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143 interval = interval > MIN_UPDATE_INTERVAL ? interval : UPDATE_INTERVAL;
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144
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145 GWT.log("Update project list every " + interval + " milliseconds.");
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146
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147 Timer t = new Timer() {
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148 @Override
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149 public void run() {
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150 updateUserCollections();
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151 }
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152 };
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153
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154 t.scheduleRepeating(interval);
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155 }
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156
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157
225
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158 public FLYS getFlys() {
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159 return flys;
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160 }
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161
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162
220
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163 /**
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164 * Creates a new context menu that interacts with a CollectionRecord.
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165 *
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166 * @param record The selected record.
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167 *
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168 * @return the context menu with operations that interact with
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169 * <i>record</i>.
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170 */
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171 protected Menu createContextMenu(final CollectionRecord record) {
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172 Menu menu = new Menu();
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173
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174 MenuItem open = new MenuItem(messages.open_project());
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175 open.addClickHandler(new ClickHandler() {
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176 public void onClick(MenuItemClickEvent evt) {
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177 getFlys().openProject(record.getCollection().identifier());
220
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178 }
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179 });
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180
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181 MenuItem del = new MenuItem(messages.delete_project());
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182 del.addClickHandler(new ClickHandler() {
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183 public void onClick(MenuItemClickEvent evt) {
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184 SC.warn("Removing projects is not implemented.");
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185 }
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186 });
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187
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188 menu.addItem(open);
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189 menu.addItem(del);
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190
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191 return menu;
4
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192 }
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193
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194
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195 /**
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196 * The init() method handles the layout stuff for this widget.
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197 */
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198 protected void init() {
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199 setWidth(300);
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200 setHeight100();
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201 setShowResizeBar(true);
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202 setShowEdges(false);
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203 setLayoutMargin(0);
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204 setLayoutAlign(VerticalAlignment.TOP);
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205
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206 Label title = new Label(messages.projects());
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207 title.setHeight("20");
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208 title.setMargin(5);
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209 title.setWidth100();
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210 title.setStyleName("fontLightSmall");
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211
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212 Canvas titleWrapper = new Canvas();
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213 titleWrapper.setStyleName("bgBlueDark");
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214 titleWrapper.setWidth100();
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215 titleWrapper.setHeight("20px");
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216 titleWrapper.addChild(title);
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217
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218 Canvas gridWrapper = new Canvas();
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219 gridWrapper.setPadding(0);
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220 titleWrapper.setWidth100();
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221 gridWrapper.addChild(grid);
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222
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223 addMember(titleWrapper);
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224 addMember(gridWrapper);
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225 }
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226
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227
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228 public void onCollectionChange(CollectionChangeEvent event) {
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229 if (event.getOldValue() == null) {
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230 updateUserCollections();
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231 }
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232 }
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233
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234
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235 protected void updateUserCollections() {
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236 GWT.log("==> ProjectList updates user collections!");
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237
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238 Config config = Config.getInstance();
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239 String url = config.getServerUrl();
229
924da6695800 Each service is now called with the name of the current locale to set the request object's locale manually in the HttpClient.
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240 String locale = config.getLocale();
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241
229
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242 userCollectionsService.getUserCollections(url, locale, user.identifier(),
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243 new AsyncCallback<Collection[]>() {
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244 public void onFailure(Throwable caught) {
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245 GWT.log("Could not recieve a list of user collections.");
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246 GWT.log(caught.getMessage());
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247 }
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248
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249 public void onSuccess(Collection[] collections) {
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250 int num = collections != null ? collections.length : 0;
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251
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252 GWT.log("Received " + num + " user collections.");
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253
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254 if (num == 0) {
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255 return;
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256 }
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257
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258 updateGrid(collections);
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259 }
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260 }
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261 );
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262 }
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263
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264
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265 protected void clearGrid() {
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266 ListGridRecord[] records = grid.getRecords();
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267
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268 for (ListGridRecord record: records) {
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269 grid.removeData(record);
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270 }
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271 }
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272
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273
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274 protected void updateGrid(Collection[] collections) {
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275 clearGrid();
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276
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277 for (Collection c: collections) {
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278 grid.addData(new CollectionRecord(c));
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279 }
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280 }
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281
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282
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283 /**
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284 * Builds the field in the grid that displays the creation time of a
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285 * project.
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286 *
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287 * @return the grid field.
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288 */
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289 protected ListGridField buildDateField() {
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290 ListGridField date = new ListGridField("creationTime", "creationTime");
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291 date.setType(ListGridFieldType.DATE);
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292
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293 date.setCellFormatter(new CellFormatter() {
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294 public String format(Object value, ListGridRecord rec, int r, int c) {
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295 if (value == null) {
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296 return null;
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297 }
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298
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299 DateTimeFormat dtf = DateTimeFormat.getFormat(
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300 messages.datetime_format());
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301
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302 return dtf.format((Date)value);
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303 }
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304 });
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305
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306 date.setWidth(105);
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307 date.setAlign(Alignment.LEFT);
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308
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309 return date;
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310 }
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311
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312
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313 /**
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314 * Builds the field in the grid that displays the name of a project.
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315 *
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316 * @return the grid field.
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317 */
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318 protected ListGridField buildNameField() {
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319 ListGridField name = new ListGridField("name", "name");
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320 name.setType(ListGridFieldType.TEXT);
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321
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322 name.setCellFormatter(new CellFormatter() {
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323 public String format(Object value, ListGridRecord record, int row, int col) {
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324 String n = (String) value;
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diff changeset
325 int len = n.length();
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326
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diff changeset
327 if (len < 30) {
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328 return n;
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329 }
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330
226
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331 int sec = len - 15;
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diff changeset
332 return n.substring(0, 14) + "..." + n.substring(sec, len-1);
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333 }
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334 });
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335
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336 name.setWidth(195);
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337 name.setAlign(Alignment.LEFT);
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338
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339 return name;
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340 }
4
89976499e013 Implemented a ProjectList and added a mockup that displays two collections in that list.
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parents:
diff changeset
341 }
89976499e013 Implemented a ProjectList and added a mockup that displays two collections in that list.
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diff changeset
342 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org