2 * Copyright 2011-2013 GRNET S.A. All rights reserved.
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5 * without modification, are permitted provided that the following
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20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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36 package gr.grnet.pithos.web.client.grouptree;
38 import gr.grnet.pithos.web.client.Pithos;
39 import gr.grnet.pithos.web.client.commands.CreateGroupCommand;
40 import gr.grnet.pithos.web.client.foldertree.File;
41 import gr.grnet.pithos.web.client.grouptree.GroupTreeView.Templates;
43 import java.util.HashMap;
44 import java.util.HashSet;
47 import com.google.gwt.cell.client.AbstractCell;
48 import com.google.gwt.cell.client.Cell;
49 import com.google.gwt.event.dom.client.ContextMenuEvent;
50 import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
51 import com.google.gwt.user.client.ui.AbstractImagePrototype;
52 import com.google.gwt.view.client.ListDataProvider;
53 import com.google.gwt.view.client.SelectionChangeEvent;
54 import com.google.gwt.view.client.SingleSelectionModel;
55 import com.google.gwt.view.client.TreeViewModel;
57 public class GroupTreeViewModel implements TreeViewModel {
61 private Cell<Group> groupCell = new AbstractCell<Group>(ContextMenuEvent.getType().getName()) {
64 public void render(Context context, Group value, SafeHtmlBuilder sb) {
65 String html = AbstractImagePrototype.create(GroupTreeView.images.group()).getHTML();
66 sb.appendHtmlConstant(html).appendHtmlConstant(" ");
67 sb.append(Templates.INSTANCE.nameSpan(value.getName()));
71 public void onBrowserEvent(Cell.Context context, com.google.gwt.dom.client.Element parent, Group group, com.google.gwt.dom.client.NativeEvent event, com.google.gwt.cell.client.ValueUpdater<Group> valueUpdater) {
72 if (!group.equals(createGroup)) {
73 GroupTreeViewModel.this.groupSelectionModel.setSelected(group, true);
74 if (event.getType().equals(ContextMenuEvent.getType().getName())) {
75 GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, group);
76 menu.setPopupPosition(event.getClientX(), event.getClientY());
83 private Cell<User> userCell = new AbstractCell<User>(ContextMenuEvent.getType().getName()) {
86 public void render(Context context, User user, SafeHtmlBuilder sb) {
87 String html = AbstractImagePrototype.create(GroupTreeView.images.user()).getHTML();
88 sb.appendHtmlConstant(html).appendHtmlConstant(" ");
89 final String userID = user.getUserID();
90 final String userDisplayName = app.getDisplayNameForUserID(userID);
91 sb.append(Templates.INSTANCE.nameSpan(userDisplayName));
95 public void onBrowserEvent(Cell.Context context, com.google.gwt.dom.client.Element parent, User user, com.google.gwt.dom.client.NativeEvent event, com.google.gwt.cell.client.ValueUpdater<User> valueUpdater) {
96 GroupTreeViewModel.this.userSelectionModel.setSelected(user, true);
97 if (event.getType().equals(ContextMenuEvent.getType().getName())) {
98 UserContextMenu menu = new UserContextMenu(app, GroupTreeView.images, user);
99 menu.setPopupPosition(event.getClientX(), event.getClientY());
105 protected ListDataProvider<Group> groupsDataProvider = new ListDataProvider<Group>();
107 protected Map<Group, ListDataProvider<User>> userDataProviderMap = new HashMap<Group, ListDataProvider<User>>();
109 SingleSelectionModel<Group> groupSelectionModel;
110 SingleSelectionModel<User> userSelectionModel;
112 final Group createGroup = new Group("Create new group...");
114 public GroupTreeViewModel(Pithos _app) {
117 groupSelectionModel = new SingleSelectionModel<Group>();
118 app.addSelectionModel(groupSelectionModel);
119 groupSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
122 public void onSelectionChange(SelectionChangeEvent event) {
123 Group selected = groupSelectionModel.getSelectedObject();
124 if (selected != null) {
125 app.deselectOthers(app.getGroupTreeView(), groupSelectionModel);
126 app.showFiles(new HashSet<File>());
127 app.disableUploadArea();
128 app.upload.setEnabled(false);
129 app.showRelevantToolbarButtons();
130 if (selected.equals(createGroup)) {
131 new CreateGroupCommand(app, null).execute();
132 groupSelectionModel.setSelected(createGroup, false);
136 if (app.getSelectedTree().equals(app.getGroupTreeView()))
137 app.setSelectedTree(null);
138 if (app.getSelectedTree() == null)
139 app.showRelevantToolbarButtons();
144 userSelectionModel = new SingleSelectionModel<User>();
145 app.addSelectionModel(userSelectionModel);
146 userSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
149 public void onSelectionChange(SelectionChangeEvent event) {
150 if (userSelectionModel.getSelectedObject() != null) {
151 app.deselectOthers(app.getGroupTreeView(), userSelectionModel);
152 app.showFiles(new HashSet<File>());
153 app.showRelevantToolbarButtons();
156 if (app.getSelectedTree().equals(app.getGroupTreeView()))
157 app.setSelectedTree(null);
158 if (app.getSelectedTree() == null)
159 app.showRelevantToolbarButtons();
166 public <T> NodeInfo<?> getNodeInfo(T value) {
168 groupsDataProvider.getList().clear();
169 groupsDataProvider.getList().addAll(app.getAccount().getGroups());
170 groupsDataProvider.getList().add(createGroup);
171 return new DefaultNodeInfo<Group>(groupsDataProvider, groupCell, groupSelectionModel, null);
173 Group g = (Group) value;
174 if (userDataProviderMap.get(g) == null) {
175 userDataProviderMap.put(g, new ListDataProvider<User>());
177 final ListDataProvider<User> dataProvider = userDataProviderMap.get(g);
178 dataProvider.getList().clear();
179 for (String userID : g.getMemberIDs())
180 dataProvider.getList().add(new User(userID, g.getName()));
181 return new DefaultNodeInfo<User>(dataProvider, userCell, userSelectionModel, null);
185 public boolean isLeaf(Object o) {
186 if (o instanceof User) {
189 else if (o instanceof Group)
190 return ((Group) o).getMemberIDs().isEmpty();
194 public void updateGroupNode(Group group) {
196 groupsDataProvider.getList().clear();
197 groupsDataProvider.getList().addAll(app.getAccount().getGroups());
198 groupsDataProvider.getList().add(createGroup);
201 if (userDataProviderMap.get(group) == null) {
202 userDataProviderMap.put(group, new ListDataProvider<User>());
204 final ListDataProvider<User> dataProvider = userDataProviderMap.get(group);
205 dataProvider.getList().clear();
206 for (String u : group.getMemberIDs())
207 dataProvider.getList().add(new User(u, group.getName()));
211 public Object getSelectedObject() {
212 if (groupSelectionModel.getSelectedObject() != null)
213 return groupSelectionModel.getSelectedObject();
214 if (userSelectionModel.getSelectedObject() != null)
215 return userSelectionModel.getSelectedObject();