/*
* Copyright (c) 2010-2011 Lockheed Martin Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.eurekastreams.web.client.model;
import org.eurekastreams.server.action.request.profile.GetFollowersFollowingRequest;
import org.eurekastreams.server.action.request.profile.SetFollowingStatusRequest;
import org.eurekastreams.server.domain.Follower.FollowerStatus;
import org.eurekastreams.server.domain.PagedSet;
import org.eurekastreams.server.search.modelview.PersonModelView;
import org.eurekastreams.server.domain.BasicPager;
import org.eurekastreams.server.domain.EntityType;
import org.eurekastreams.web.client.events.EventBus;
import org.eurekastreams.web.client.events.data.DeletedGroupMemberResponseEvent;
import org.eurekastreams.web.client.events.data.GotGroupMembersResponseEvent;
import org.eurekastreams.web.client.events.data.GotPersonFollowerStatusResponseEvent;
import org.eurekastreams.web.client.events.data.InsertedGroupMemberResponseEvent;
import org.eurekastreams.web.client.ui.Session;
/**
* Group Members Model.
*
*/
public class GroupMembersModel extends BaseModel implements Fetchable<GetFollowersFollowingRequest>,
Insertable<SetFollowingStatusRequest>, Deletable<SetFollowingStatusRequest>
{
/**
* Singleton.
*/
private static GroupMembersModel model = new GroupMembersModel();
/**
* Gets the singleton.
*
* @return the singleton.
*/
public static GroupMembersModel getInstance()
{
return model;
}
/**
* {@inheritDoc}
*/
public void fetch(final GetFollowersFollowingRequest request, final boolean useClientCacheIfAvailable)
{
super.callReadAction("getGroupFollowers", request, new OnSuccessCommand<PagedSet<PersonModelView>>()
{
public void onSuccess(final PagedSet<PersonModelView> response)
{
Session.getInstance().getEventBus().notifyObservers(new GotGroupMembersResponseEvent(response));
}
}, useClientCacheIfAvailable);
}
/**
* {@inheritDoc}
*/
public void insert(final SetFollowingStatusRequest request)
{
super.callWriteAction("setFollowingStatusGroupTaskHandler", request, new OnSuccessCommand<Integer>()
{
public void onSuccess(final Integer response)
{
// the user added could have been one who made a membership request, so clear the request model
GroupMembershipRequestModel.getInstance().clearCache();
StreamsDiscoveryModel.getInstance().clearCache();
// clear following model
CurrentUserPersonFollowingStatusModel.getInstance().clearCache();
EventBus eventBus = Session.getInstance().getEventBus();
eventBus.notifyObservers(new InsertedGroupMemberResponseEvent(request, response));
// simulate a status request for recipients that don't listen for changes. Event type has person in the
// name, but that is the event used when querying groups
eventBus.notifyObservers(new GotPersonFollowerStatusResponseEvent(FollowerStatus.FOLLOWING));
}
});
}
/**
* {@inheritDoc}
*/
public void delete(final SetFollowingStatusRequest request)
{
super.callWriteAction("setFollowingStatusGroupTaskHandler", request, new OnSuccessCommand<Integer>()
{
public void onSuccess(final Integer response)
{
// clear following model
CurrentUserPersonFollowingStatusModel.getInstance().clearCache();
StreamsDiscoveryModel.getInstance().clearCache();
EventBus eventBus = Session.getInstance().getEventBus();
eventBus.notifyObservers(new DeletedGroupMemberResponseEvent(request, response));
// simulate a status request for recipients that don't listen for changes. Event type has person in the
// name, but that is the event used when querying groups
eventBus.notifyObservers(new GotPersonFollowerStatusResponseEvent(FollowerStatus.NOTFOLLOWING));
// In the event that a User is removed as a Follower of a Group,
// then it's necessary to update the UI to see that
// the removed User is no longer is a member of this Group, and that
// the Followers Count decrements by 1.
if (!request.getFollowerUniqueId().equals(
Session.getInstance().getCurrentPerson().getAccountId()))
{
// Update "Followers" tab so that the removed
// follower no longer appears.
BasicPager pager = new BasicPager();
fetch(new GetFollowersFollowingRequest(EntityType.GROUP,
request.getGroupShortName(), pager.getStartItem(), pager.getEndItem()), false);
// Update the Group 'Followers' #
GroupModel.getInstance().fetch(request.getGroupShortName(), false);
}
}
});
}
}