/*
* 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.GetRequestForGroupMembershipRequest;
import org.eurekastreams.server.domain.BasicPager;
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.GotGroupModelViewInformationResponseEvent;
import org.eurekastreams.web.client.events.data.GotRequestForGroupMembershipResponseEvent;
import org.eurekastreams.web.client.model.GroupMembershipRequestModel;
import org.eurekastreams.web.client.ui.common.pagedlist.PersonRequestingGroupMembershipRenderer;
import org.eurekastreams.web.client.ui.common.pagedlist.TwoColumnPagedListRenderer;
import com.google.gwt.user.client.ui.FlowPanel;
/**
* Group membership request pager strategy.
*
*/
public class GroupMembershipRequestPagerUiStrategy implements PagerStrategy
{
/**
* Event.
*/
private PagerResponseEvent responseEvent = new PagerResponseEvent();
/**
* Renders two column layout.
*/
private TwoColumnPagedListRenderer listRenderer = new TwoColumnPagedListRenderer();
/**
* Group id.
*/
private long groupId;
/**
* Group short name.
*/
private String groupShortName;
/**
* Pager.
*/
private BasicPager pager = new BasicPager();
/**
* Constructor.
*/
public GroupMembershipRequestPagerUiStrategy()
{
responseEvent.setKey(getKey());
EventBus.getInstance().addObserver(GotRequestForGroupMembershipResponseEvent.class,
new Observer<GotRequestForGroupMembershipResponseEvent>()
{
public void update(final GotRequestForGroupMembershipResponseEvent event)
{
pager.setMaxCount(event.getResponse().getTotal());
FlowPanel responsePanel = new FlowPanel();
listRenderer.render(responsePanel, new PersonRequestingGroupMembershipRenderer(event
.getGroupId(), event.getGroupShortName()), event.getResponse(),
"No membership requests");
responseEvent.setWidget(responsePanel);
EventBus.getInstance().notifyObservers(responseEvent);
}
});
EventBus.getInstance().addObserver(GotGroupModelViewInformationResponseEvent.class,
new Observer<GotGroupModelViewInformationResponseEvent>()
{
public void update(final GotGroupModelViewInformationResponseEvent event)
{
groupId = event.getResponse().getId();
groupShortName = event.getResponse().getShortName();
EventBus.getInstance().removeObserver(GotGroupModelViewInformationResponseEvent.class, this);
}
});
}
/**
* Initialize.
*/
public void init()
{
GroupMembershipRequestModel.getInstance().fetch(
new GetRequestForGroupMembershipRequest(groupId, groupShortName, pager.getStartItem(), pager
.getEndItem()), false);
}
/**
* @return The key.
*/
public String getKey()
{
return "groupMembershipReq";
}
/**
* @return if has next page values.
*/
public boolean hasNext()
{
return pager.isNextPageable();
}
/**
* @return if has previous page values.
*/
public boolean hasPrev()
{
return pager.isPreviousPageable();
}
/**
* Next.
*/
public void next()
{
pager.nextPage();
GroupMembershipRequestModel.getInstance().fetch(
new GetRequestForGroupMembershipRequest(groupId, groupShortName, pager.getStartItem(), pager
.getEndItem()), false);
}
/**
* Previous.
*/
public void prev()
{
pager.previousPage();
GroupMembershipRequestModel.getInstance().fetch(
new GetRequestForGroupMembershipRequest(groupId, groupShortName, pager.getStartItem(), pager
.getEndItem()), false);
}
/**
* @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();
}
}