root / src / gr / grnet / pithos / web / client / grouptree / GroupTreeViewModel.java @ 1238d28d
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/*
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* Copyright 2011-2012 GRNET S.A. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and
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* documentation are those of the authors and should not be
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* interpreted as representing official policies, either expressed
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* or implied, of GRNET S.A.
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*/
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package gr.grnet.pithos.web.client.grouptree; |
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import gr.grnet.pithos.web.client.Pithos; |
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import gr.grnet.pithos.web.client.commands.CreateGroupCommand; |
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import gr.grnet.pithos.web.client.foldertree.File; |
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import gr.grnet.pithos.web.client.grouptree.GroupTreeView.Templates; |
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import java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.Map; |
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import com.google.gwt.cell.client.AbstractCell; |
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import com.google.gwt.cell.client.Cell; |
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import com.google.gwt.event.dom.client.ContextMenuEvent; |
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import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
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import com.google.gwt.user.client.ui.AbstractImagePrototype; |
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import com.google.gwt.view.client.ListDataProvider; |
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import com.google.gwt.view.client.SelectionChangeEvent; |
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import com.google.gwt.view.client.SingleSelectionModel; |
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import com.google.gwt.view.client.TreeViewModel; |
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public class GroupTreeViewModel implements TreeViewModel { |
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protected Pithos app;
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private Cell<Group> groupCell = new AbstractCell<Group>(ContextMenuEvent.getType().getName()) { |
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@Override
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public void render(Context context, Group value, SafeHtmlBuilder sb) { |
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String html = AbstractImagePrototype.create(GroupTreeView.images.group()).getHTML();
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sb.appendHtmlConstant(html).appendHtmlConstant(" ");
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sb.append(Templates.INSTANCE.nameSpan(value.getName()));
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} |
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@Override
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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) { |
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if (!group.equals(createGroup)) {
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GroupTreeViewModel.this.groupSelectionModel.setSelected(group, true);
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if (event.getType().equals(ContextMenuEvent.getType().getName())) {
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GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, group);
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menu.setPopupPosition(event.getClientX(), event.getClientY()); |
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menu.show(); |
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} |
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} |
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} |
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}; |
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private Cell<User> userCell = new AbstractCell<User>(ContextMenuEvent.getType().getName()) { |
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@Override
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public void render(Context context, User value, SafeHtmlBuilder sb) { |
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String html = AbstractImagePrototype.create(GroupTreeView.images.user()).getHTML();
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sb.appendHtmlConstant(html).appendHtmlConstant(" ");
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sb.append(Templates.INSTANCE.nameSpan(value.getName()));
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} |
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@Override
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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) { |
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GroupTreeViewModel.this.userSelectionModel.setSelected(user, true);
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if (event.getType().equals(ContextMenuEvent.getType().getName())) {
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UserContextMenu menu = new UserContextMenu(app, GroupTreeView.images, user);
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menu.setPopupPosition(event.getClientX(), event.getClientY()); |
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menu.show(); |
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} |
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} |
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}; |
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protected ListDataProvider<Group> groupsDataProvider = new ListDataProvider<Group>(); |
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protected Map<Group, ListDataProvider<User>> userDataProviderMap = new HashMap<Group, ListDataProvider<User>>(); |
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SingleSelectionModel<Group> groupSelectionModel; |
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SingleSelectionModel<User> userSelectionModel;
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final Group createGroup = new Group("Create new group..."); |
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public GroupTreeViewModel(Pithos _app) {
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app = _app; |
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groupSelectionModel = new SingleSelectionModel<Group>(); |
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app.addSelectionModel(groupSelectionModel); |
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groupSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
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@Override
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public void onSelectionChange(SelectionChangeEvent event) { |
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Group selected = groupSelectionModel.getSelectedObject();
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if (selected != null) { |
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app.deselectOthers(app.getGroupTreeView(), groupSelectionModel); |
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app.showFiles(new HashSet<File>()); |
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app.hideUploadArea(); |
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app.upload.setEnabled(false);
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app.showRelevantToolbarButtons(); |
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if (selected.equals(createGroup)) {
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new CreateGroupCommand(app, null).execute(); |
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groupSelectionModel.setSelected(createGroup, false);
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} |
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} |
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else {
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if (app.getSelectedTree().equals(app.getGroupTreeView()))
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app.setSelectedTree(null);
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if (app.getSelectedTree() == null) |
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app.showRelevantToolbarButtons(); |
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} |
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} |
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}); |
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userSelectionModel = new SingleSelectionModel<User>(); |
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app.addSelectionModel(userSelectionModel); |
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userSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
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@Override
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public void onSelectionChange(SelectionChangeEvent event) { |
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if (userSelectionModel.getSelectedObject() != null) { |
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app.deselectOthers(app.getGroupTreeView(), userSelectionModel); |
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app.showFiles(new HashSet<File>()); |
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app.showRelevantToolbarButtons(); |
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} |
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else {
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if (app.getSelectedTree().equals(app.getGroupTreeView()))
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app.setSelectedTree(null);
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if (app.getSelectedTree() == null) |
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app.showRelevantToolbarButtons(); |
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} |
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} |
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}); |
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} |
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@Override
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public <T> NodeInfo<?> getNodeInfo(T value) {
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if (value == null) { |
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groupsDataProvider.getList().clear(); |
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groupsDataProvider.getList().addAll(app.getAccount().getGroups()); |
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groupsDataProvider.getList().add(createGroup); |
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return new DefaultNodeInfo<Group>(groupsDataProvider, groupCell, groupSelectionModel, null); |
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} |
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Group g = (Group) value; |
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if (userDataProviderMap.get(g) == null) { |
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userDataProviderMap.put(g, new ListDataProvider<User>());
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} |
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final ListDataProvider<User> dataProvider = userDataProviderMap.get(g);
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dataProvider.getList().clear(); |
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for (String u : g.getMembers()) |
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dataProvider.getList().add(new User(u, g));
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return new DefaultNodeInfo<User>(dataProvider, userCell, userSelectionModel, null); |
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} |
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@Override
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public boolean isLeaf(Object o) { |
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if (o instanceof User) { |
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return true; |
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} |
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else if (o instanceof Group) |
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return ((Group) o).getMembers().isEmpty(); |
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return false; |
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} |
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public void updateGroupNode(Group group) { |
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if (group == null) { |
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groupsDataProvider.getList().clear(); |
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groupsDataProvider.getList().addAll(app.getAccount().getGroups()); |
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groupsDataProvider.getList().add(createGroup); |
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} |
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else {
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if (userDataProviderMap.get(group) == null) { |
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userDataProviderMap.put(group, new ListDataProvider<User>());
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} |
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final ListDataProvider<User> dataProvider = userDataProviderMap.get(group);
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dataProvider.getList().clear(); |
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for (String u : group.getMembers()) |
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dataProvider.getList().add(new User(u, group));
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} |
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} |
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public Object getSelectedObject() { |
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if (groupSelectionModel.getSelectedObject() != null) |
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return groupSelectionModel.getSelectedObject();
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if (userSelectionModel.getSelectedObject() != null) |
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return userSelectionModel.getSelectedObject();
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return null; |
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} |
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} |