/*
* Copyright (c) 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.ui.common.pager;
import org.eurekastreams.server.action.request.profile.GetFollowersFollowingRequest;
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.Observer;
import org.eurekastreams.web.client.events.PagerResponseEvent;
import org.eurekastreams.web.client.events.data.GotGroupMembersResponseEvent;
import org.eurekastreams.web.client.events.data.GotGroupModelViewInformationResponseEvent;
import org.eurekastreams.web.client.events.data.GotPersonFollowersResponseEvent;
import org.eurekastreams.web.client.events.data.GotPersonalInformationResponseEvent;
import org.eurekastreams.web.client.model.Fetchable;
import org.eurekastreams.web.client.model.GroupMembersModel;
import org.eurekastreams.web.client.model.PersonFollowersModel;
import org.eurekastreams.web.client.ui.common.pagedlist.PersonRenderer;
import org.eurekastreams.web.client.ui.common.pagedlist.RemovableGroupMemberPersonRenderer;
import org.eurekastreams.web.client.ui.common.pagedlist.TwoColumnPagedListRenderer;
import org.eurekastreams.server.search.modelview.DomainGroupModelView;
import com.google.gwt.user.client.ui.FlowPanel;
/**
* Follower page strategy.
*/
public class FollowerPagerUiStrategy implements PagerStrategy
{
/**
* Model.
*/
private Fetchable<GetFollowersFollowingRequest> model;
/**
* Event.
*/
private PagerResponseEvent responseEvent = new PagerResponseEvent();
/**
* Pager.
*/
private BasicPager pager = new BasicPager();
/**
* Renders two column layout.
*/
private TwoColumnPagedListRenderer twoColListRenderer = new TwoColumnPagedListRenderer();
/**
* Renders a person.
*/
private PersonRenderer personRenderer = new PersonRenderer(false);
/**
* Renders a person with a link so that an Admin or Group Coordinator can remove them.
*/
private RemovableGroupMemberPersonRenderer removablePersonRenderer;
/**
* Entity type.
*/
private EntityType entityType;
/**
* Event key.
*/
private String entityKey;
/**
* Group.
*/
private DomainGroupModelView group;
/**
* Constructor.
*/
public FollowerPagerUiStrategy()
{
responseEvent.setKey(getKey());
EventBus.getInstance().addObserver(GotPersonFollowersResponseEvent.class,
new Observer<GotPersonFollowersResponseEvent>()
{
public void update(final GotPersonFollowersResponseEvent event)
{
pager.setMaxCount(event.getResponse().getTotal());
FlowPanel responsePanel = new FlowPanel();
twoColListRenderer.render(responsePanel, personRenderer, event.getResponse(), "No Followers");
responseEvent.setWidget(responsePanel);
EventBus.getInstance().notifyObservers(responseEvent);
}
});
EventBus.getInstance().addObserver(GotGroupMembersResponseEvent.class,
new Observer<GotGroupMembersResponseEvent>()
{
public void update(final GotGroupMembersResponseEvent event)
{
pager.setMaxCount(event.getResponse().getTotal());
removablePersonRenderer = new RemovableGroupMemberPersonRenderer(entityKey, group);
FlowPanel responsePanel = new FlowPanel();
twoColListRenderer.render(responsePanel, removablePersonRenderer, event.getResponse(),
"No Followers");
responseEvent.setWidget(responsePanel);
EventBus.getInstance().notifyObservers(responseEvent);
}
});
EventBus.getInstance().addObserver(GotPersonalInformationResponseEvent.class,
new Observer<GotPersonalInformationResponseEvent>()
{
public void update(final GotPersonalInformationResponseEvent event)
{
entityKey = event.getResponse().getAccountId();
entityType = EntityType.PERSON;
model = PersonFollowersModel.getInstance();
}
});
EventBus.getInstance().addObserver(GotGroupModelViewInformationResponseEvent.class,
new Observer<GotGroupModelViewInformationResponseEvent>()
{
public void update(final GotGroupModelViewInformationResponseEvent event)
{
entityKey = event.getResponse().getShortName();
entityType = EntityType.GROUP;
model = GroupMembersModel.getInstance();
group = event.getResponse();
}
});
}
/**
* If the pager has next.
*
* @return has next.
*/
public boolean hasNext()
{
return pager.isNextPageable();
}
/**
* If the page has prev.
*
* @return has prev.
*/
public boolean hasPrev()
{
return pager.isPreviousPageable();
}
/**
* Initialize..
*/
public void init()
{
pager = new BasicPager();
model.fetch(new GetFollowersFollowingRequest(entityType, entityKey, pager.getStartItem(), pager.getEndItem()),
false);
}
/**
* Next.
*/
public void next()
{
pager.nextPage();
model.fetch(new GetFollowersFollowingRequest(entityType, entityKey, pager.getStartItem(), pager.getEndItem()),
false);
}
/**
* Prev.
*/
public void prev()
{
pager.previousPage();
model.fetch(new GetFollowersFollowingRequest(entityType, entityKey, pager.getStartItem(), pager.getEndItem()),
false);
}
/**
* Get the key.
*
* @return the key.
*/
public String getKey()
{
return "follower";
}
/**
* @return the start index from the pager.
*/
public int getStartIndex()
{
return pager.getStartItem();
}
/**
* @return the end item fro the pager.
*/
public int getEndIndex()
{
return pager.getEndItem();
}
/**
* @return the total from the pager.
*/
public int getTotal()
{
return pager.getMaxCount();
}
}