Synnefo

import gr.grnet.pithos.web.client.grouptree.Group;

import gr.grnet.pithos.web.client.grouptree.Group;

    public void updateGroupNode(Group group) {

        groupTreeView.updateGroupNode(group);

    }

        groupTreeViewModel = new GroupTreeViewModel(this);

                    groupTreeViewModel.initialize();

	public void updateGroupsNode() {

		groupTreeView.updateGroupNode(null);

	}

	public void addGroup(String groupname) {

		Group newGroup = new Group(groupname);

		account.addGroup(newGroup);

		groupTreeView.updateGroupNode(null);

	}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.commands;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.foldertree.Resource;

import gr.grnet.pithos.web.client.grouptree.Group;

import gr.grnet.pithos.web.client.rest.PostRequest;

import gr.grnet.pithos.web.client.rest.RestException;

import com.google.gwt.core.client.GWT;

import com.google.gwt.core.client.Scheduler;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * Display the 'new folder' dialog for creating a new folder.

 *

 */

public class AddUserCommand implements Command {

	private PopupPanel containerPanel;

    Group group;

    Pithos app;

	/**

	 * @param aContainerPanel

	 */

	public AddUserCommand(Pithos _app, PopupPanel aContainerPanel, Group _group){

        app = _app;

		containerPanel = aContainerPanel;

	    group = _group;

	}

	@Override

	public void execute() {

        if (containerPanel != null)

		    containerPanel.hide();

        String username = Window.prompt("Enter username:", "");

        if (username != null && username.length() > 0) {

        	group.addMember(username);

        	String path = "?update=";

        	PostRequest updateGroup = new PostRequest(app.getApiPath(), app.getUsername(), path) {

				@Override

				public void onSuccess(Resource result) {

					app.updateGroupNode(group);

				}

				@Override

				public void onError(Throwable t) {

					GWT.log("", t);

					if (t instanceof RestException) {

						app.displayError("Unable to update group:" + ((RestException) t).getHttpStatusText());

					}

					else

						app.displayError("System error updating group:" + t.getMessage());

				}

			};

			updateGroup.setHeader("X-Auth-Token", app.getToken());

			String groupMembers = "";

			for (String u : group.getMembers())

				groupMembers += (u + ",");

			updateGroup.setHeader("X-Account-Group-" + group.getName(), groupMembers);

			Scheduler.get().scheduleDeferred(updateGroup);

        }

	}

}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.commands;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.foldertree.Resource;

import gr.grnet.pithos.web.client.grouptree.Group;

import gr.grnet.pithos.web.client.rest.PostRequest;

import gr.grnet.pithos.web.client.rest.RestException;

import com.google.gwt.core.client.GWT;

import com.google.gwt.core.client.Scheduler;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * Display the 'new folder' dialog for creating a new folder.

 *

 */

public class CreateGroupCommand implements Command {

	private PopupPanel containerPanel;

    Pithos app;

	/**

	 * @param aContainerPanel

	 */

	public CreateGroupCommand(Pithos _app, PopupPanel aContainerPanel){

        app = _app;

		containerPanel = aContainerPanel;

	}

	@Override

	public void execute() {

        if (containerPanel != null)

		    containerPanel.hide();

        String groupname = Window.prompt("Enter group name:", "");

        if (groupname != null && groupname.length() > 0) {

        	app.addGroup(groupname);

        }

	}

}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.commands;

import gr.grnet.pithos.web.client.MessagePanel.Images;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.foldertree.Resource;

import gr.grnet.pithos.web.client.grouptree.Group;

import gr.grnet.pithos.web.client.rest.PostRequest;

import gr.grnet.pithos.web.client.rest.RestException;

import com.google.gwt.core.client.GWT;

import com.google.gwt.core.client.Scheduler;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * Delete selected object command

 *

 */

public class DeleteGroupCommand implements Command {

	private PopupPanel containerPanel;

    private Group group;

    Pithos app;

	/**

	 * @param _containerPanel

	 */

	public DeleteGroupCommand(Pithos _app, PopupPanel _containerPanel, Group _group){

        app = _app;

		containerPanel = _containerPanel;

        group = _group;

	}

	@Override

	public void execute() {

        if (containerPanel != null)

    		containerPanel.hide();

        if (Window.confirm("Are you sure you want to delete group " + group.getName())) {

        	String path = "?update=";

        	PostRequest updateGroup = new PostRequest(app.getApiPath(), app.getUsername(), path) {

				@Override

				public void onSuccess(Resource result) {

					app.updateGroupsNode();

				}

				@Override

				public void onError(Throwable t) {

					GWT.log("", t);

					if (t instanceof RestException) {

						app.displayError("Unable to delete group:" + ((RestException) t).getHttpStatusText());

					}

					else

						app.displayError("System error deleting group:" + t.getMessage());

				}

			};

			updateGroup.setHeader("X-Auth-Token", app.getToken());

			updateGroup.setHeader("X-Account-Group-" + group.getName(), "~");

			Scheduler.get().scheduleDeferred(updateGroup);

        }

	}

}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.commands;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.foldertree.Resource;

import gr.grnet.pithos.web.client.grouptree.Group;

import gr.grnet.pithos.web.client.grouptree.User;

import gr.grnet.pithos.web.client.rest.PostRequest;

import gr.grnet.pithos.web.client.rest.RestException;

import com.google.gwt.core.client.GWT;

import com.google.gwt.core.client.Scheduler;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.Window;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * Display the 'new folder' dialog for creating a new folder.

 *

 */

public class RemoveUserCommand implements Command {

	private PopupPanel containerPanel;

    User user;

    Pithos app;

	/**

	 * @param aContainerPanel

	 */

	public RemoveUserCommand(Pithos _app, PopupPanel aContainerPanel, User _user){

        app = _app;

		containerPanel = aContainerPanel;

	    user = _user;

	}

	@Override

	public void execute() {

        if (containerPanel != null)

		    containerPanel.hide();

    	final Group group = user.getGroup();

    	group.removeMember(user.getName());

    	String path = "?update=";

    	PostRequest updateGroup = new PostRequest(app.getApiPath(), app.getUsername(), path) {

			@Override

			public void onSuccess(Resource result) {

				app.updateGroupNode(group);

			}

			@Override

			public void onError(Throwable t) {

				GWT.log("", t);

				if (t instanceof RestException) {

					app.displayError("Unable to update group:" + ((RestException) t).getHttpStatusText());

				}

				else

					app.displayError("System error updating group:" + t.getMessage());

			}

		};

		updateGroup.setHeader("X-Auth-Token", app.getToken());

		String groupMembers = "";

		for (String u : group.getMembers())

			groupMembers += (u + ",");

		updateGroup.setHeader("X-Account-Group-" + group.getName(), groupMembers);

		Scheduler.get().scheduleDeferred(updateGroup);

	}

}

import gr.grnet.pithos.web.client.grouptree.Group;

	public void addGroup(Group newGroup) {

		groups.add(newGroup);

	}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.grouptree;

import java.util.ArrayList;

import java.util.List;

public class Group {

    private String name;

    private List<String> members = new ArrayList<String>();

    public Group(String _name) {

        name = _name;

    }

    public List<String> getMembers() {

        return members;

    }

    public String getName() {

        return name;

    }

    public void addMember(String user) {

        members.add(user);

    }

	public void removeMember(String username) {

		members.remove(username);

	}

}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.grouptree;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.commands.AddUserCommand;

import gr.grnet.pithos.web.client.commands.CreateGroupCommand;

import gr.grnet.pithos.web.client.commands.DeleteGroupCommand;

import gr.grnet.pithos.web.client.grouptree.GroupTreeView.Images;

import com.google.gwt.user.client.ui.AbstractImagePrototype;

import com.google.gwt.user.client.ui.MenuBar;

import com.google.gwt.user.client.ui.MenuItem;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * The 'Folder Context' menu implementation.

 */

public class GroupContextMenu extends PopupPanel {

	/**

	 * The widget's images.

	 */

	private final GroupTreeView.Images images;

	/**

	 * The widget's constructor.

	 *

	 * @param newImages the image bundle passed on by the parent object

	 */

	public GroupContextMenu(Pithos app, final Images newImages, Group group) {

		// The popup's constructor's argument is a boolean specifying that it

		// auto-close itself when the user clicks outside of it.

		super(true);

		setAnimationEnabled(true);

		images = newImages;

        MenuBar contextMenu = new MenuBar(true);

        if (group != null) {

	        MenuItem addUser = new MenuItem("<span>" + AbstractImagePrototype.create(images.user()).getHTML() + "&nbsp;Add User</span>", true, new AddUserCommand(app, this, group));

	        contextMenu.addItem(addUser);

	        MenuItem deleteGroup = new MenuItem("<span>" + AbstractImagePrototype.create(images.delete()).getHTML() + "&nbsp;Delete Group</span>", true, new DeleteGroupCommand(app, this, group));

	        contextMenu.addItem(deleteGroup);

        }

        else {

	        MenuItem createGroup = new MenuItem("<span>" + AbstractImagePrototype.create(images.group()).getHTML() + "&nbsp;Create Group</span>", true, new CreateGroupCommand(app, this));

	        contextMenu.addItem(createGroup);

        }

        add(contextMenu);

	}

}

    public void updateChildren(Group group) {

        if (group != null)

        	updateChildren(root, group);

        else {

        	root.setChildOpen(0, false, true);

        	root.setChildOpen(0, true, true);

        }

    private void updateChildren(TreeNode node, Group group) {

                if (group.equals(node.getChildValue(i))) {

                    updateChildren(n, group);

    public void updateGroupNode(Group group) {

    	updateChildren(group);

    private ListDataProvider<String> rootDataProvider = new ListDataProvider<String>();

    private Cell<String> rootCell = new AbstractCell<String>(ContextMenuEvent.getType().getName()) {

		@Override

		public void render(@SuppressWarnings("unused") Context context,	String value, SafeHtmlBuilder sb) {

            String html = AbstractImagePrototype.create(GroupTreeView.images.groups()).getHTML();

            sb.appendHtmlConstant(html);

            sb.append(Templates.INSTANCE.nameSpan(value));

		}

        @Override

        public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, String s, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<String> valueUpdater) {

            if (event.getType().equals(ContextMenuEvent.getType().getName())) {

                GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, null);

                menu.setPopupPosition(event.getClientX(), event.getClientY());

                menu.show();

            }

        }

	};

	private Cell<Group> groupCell = new AbstractCell<Group>(ContextMenuEvent.getType().getName()) {

		public void render(@SuppressWarnings("unused") Context context,	Group value, SafeHtmlBuilder sb) {

        @Override

        public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, Group group, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<Group> valueUpdater) {

            if (event.getType().equals(ContextMenuEvent.getType().getName())) {

                GroupContextMenu menu = new GroupContextMenu(app, GroupTreeView.images, group);

                menu.setPopupPosition(event.getClientX(), event.getClientY());

                menu.show();

            }

        }

    private Cell<User> userCell = new AbstractCell<User>(ContextMenuEvent.getType().getName()) {

		public void render(@SuppressWarnings("unused") Context context,	User value, SafeHtmlBuilder sb) {

            sb.append(Templates.INSTANCE.nameSpan(value.getName()));

        @Override

        public void onBrowserEvent(@SuppressWarnings("unused") Cell.Context context, @SuppressWarnings("unused") com.google.gwt.dom.client.Element parent, User user, com.google.gwt.dom.client.NativeEvent event, @SuppressWarnings("unused") com.google.gwt.cell.client.ValueUpdater<User> valueUpdater) {

            if (event.getType().equals(ContextMenuEvent.getType().getName())) {

                UserContextMenu menu = new UserContextMenu(app, GroupTreeView.images, user);

                menu.setPopupPosition(event.getClientX(), event.getClientY());

                menu.show();

            }

        }

    };

    protected Map<Group, ListDataProvider<User>> userDataProviderMap = new HashMap<Group, ListDataProvider<User>>();

    public GroupTreeViewModel(Pithos _app) {

        	rootDataProvider.getList().add("");

            return new DefaultNodeInfo<String>(rootDataProvider, rootCell,  null, null);

				userDataProviderMap.put(g, new ListDataProvider<User>());

			final ListDataProvider<User> dataProvider = userDataProviderMap.get(g);

			dataProvider.getList().clear();

			for (String u : g.getMembers())

				dataProvider.getList().add(new User(u, g));

        	return new DefaultNodeInfo<User>(dataProvider, userCell, null, null);

        if (o instanceof String) {

       		return ((String) o).length() == 0 || app.getAccount().getGroups().isEmpty();

        }

        else if (o instanceof Group)

        	return ((Group) o).getMembers().isEmpty();

        else

	public void initialize() {

    	rootDataProvider.getList().clear();

    	rootDataProvider.getList().add("Groups");

	}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.grouptree;

public class User {

    private String name;

    private Group group;

    public User(String _name, Group _group) {

        name = _name;

        group = _group;

    }

    public String getName() {

        return name;

    }

	public Group getGroup() {

		return group;

	}

}

/*

 * Copyright 2011 GRNET S.A. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or

 * without modification, are permitted provided that the following

 * conditions are met:

 *

 *   1. Redistributions of source code must retain the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer.

 *

 *   2. Redistributions in binary form must reproduce the above

 *      copyright notice, this list of conditions and the following

 *      disclaimer in the documentation and/or other materials

 *      provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * The views and conclusions contained in the software and

 * documentation are those of the authors and should not be

 * interpreted as representing official policies, either expressed

 * or implied, of GRNET S.A.

 */

package gr.grnet.pithos.web.client.grouptree;

import gr.grnet.pithos.web.client.Pithos;

import gr.grnet.pithos.web.client.commands.AddUserCommand;

import gr.grnet.pithos.web.client.commands.CreateGroupCommand;

import gr.grnet.pithos.web.client.commands.DeleteGroupCommand;

import gr.grnet.pithos.web.client.commands.RemoveUserCommand;

import gr.grnet.pithos.web.client.grouptree.GroupTreeView.Images;

import com.google.gwt.user.client.ui.AbstractImagePrototype;

import com.google.gwt.user.client.ui.MenuBar;

import com.google.gwt.user.client.ui.MenuItem;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * The 'Folder Context' menu implementation.

 */

public class UserContextMenu extends PopupPanel {

	/**

	 * The widget's images.

	 */

	private final GroupTreeView.Images images;

	/**

	 * The widget's constructor.

	 *

	 * @param newImages the image bundle passed on by the parent object

	 */

	public UserContextMenu(Pithos app, final Images newImages, User user) {

		// The popup's constructor's argument is a boolean specifying that it

		// auto-close itself when the user clicks outside of it.

		super(true);

		setAnimationEnabled(true);

		images = newImages;

        MenuBar contextMenu = new MenuBar(true);

        MenuItem removeUser = new MenuItem("<span>" + AbstractImagePrototype.create(images.delete()).getHTML() + "&nbsp;Remove User</span>", true, new RemoveUserCommand(app, this, user));

        contextMenu.addItem(removeUser);

        add(contextMenu);

	}

}