/*
* 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.ui.common.stream.renderers;
import java.util.List;
import org.eurekastreams.server.action.request.stream.SetActivityLikeRequest;
import org.eurekastreams.server.action.request.stream.SetActivityLikeRequest.LikeActionType;
import org.eurekastreams.server.domain.EntityType;
import org.eurekastreams.server.search.modelview.PersonModelView;
import org.eurekastreams.web.client.events.ActivityLikedChangeEvent;
import org.eurekastreams.web.client.events.EventBus;
import org.eurekastreams.web.client.events.Observer;
import org.eurekastreams.web.client.jsni.EffectsFacade;
import org.eurekastreams.web.client.model.ActivityLikeModel;
import org.eurekastreams.web.client.ui.Session;
import org.eurekastreams.web.client.ui.TimerFactory;
import org.eurekastreams.web.client.ui.TimerHandler;
import org.eurekastreams.web.client.ui.common.avatar.AvatarLinkPanel;
import org.eurekastreams.web.client.ui.common.avatar.AvatarWidget.Size;
import org.eurekastreams.web.client.ui.common.dialog.Dialog;
import org.eurekastreams.web.client.ui.common.dialog.DialogContent;
import org.eurekastreams.web.client.ui.pages.master.StaticResourceBundle;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.FocusPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
/**
* Like count widget.
*/
public class LikeCountWidget extends Composite
{
/**
* Main widget.
*/
private final FocusPanel widget = new FocusPanel();
/**
* Shows users who have liked this.
*/
private static FlowPanel usersWhoLikedPanel = new FlowPanel();
/**
* Shows users who have liked this.
*/
private static FlowPanel usersWhoLikedPanelWrapper;
/**
* Added to root panel.
*/
private static boolean hasUsersWhoLikedBeenAddedToRoot = false;
/**
* Like count.
*/
private Integer likeCount = 0;
/**
* Link for the like count link.
*/
final Anchor likeCountLink = new Anchor();
/**
* Liked label.
*/
private static Label likedLabel = new Label();
/**
* Avatar panel.
*/
private static FlowPanel avatarPanel = new FlowPanel();
/**
* Likers.
*/
private final List<PersonModelView> likers;
/**
* Liker overflow.
*/
private PersonModelView likerOverflow;
/**
* Activity ID.
*/
private final Long thisActivityId;
/**
* Liked status.
*/
private Boolean thisIsLiked;
/**
* The current panel.
*/
private static LikeCountWidget currentPanel;
/**
* Link for the like count link.
*/
private static Anchor innerLikeCountLink = new Anchor();
/**
* The view all link.
*/
private static Anchor viewAll = new Anchor("view all");
/**
* Current activity ID being shown.
*/
private static Long currentActivityId = 0L;
/**
* Current activity like status..
*/
private static Boolean isLiked;
/**
* The body.
*/
private static FlowPanel userLikedBody = new FlowPanel();
/**
* How many do we show before the view all link shows up.
*/
private static final int MAXLIKERSSHOWN = 10;
/**
* Setup the floating avatar panel.
*/
private static void setup()
{
// Reimplementing Focus panel, GWT seems to break otherwise.
usersWhoLikedPanelWrapper = new FlowPanel()
{
private final TimerFactory timerFactory = new TimerFactory();
private boolean actuallyOut = false;
private static final int TIMER_EXPIRATION = 250;
@Override
public void onBrowserEvent(final Event event)
{
super.onBrowserEvent(event);
if (DOM.eventGetType(event) == Event.ONMOUSEOUT)
{
actuallyOut = true;
timerFactory.runTimer(TIMER_EXPIRATION, new TimerHandler()
{
public void run()
{
if (actuallyOut)
{
usersWhoLikedPanelWrapper.setVisible(false);
}
}
});
}
else if (DOM.eventGetType(event) == Event.ONMOUSEOVER)
{
actuallyOut = false;
}
else if (DOM.eventGetType(event) == Event.ONCLICK)
{
usersWhoLikedPanelWrapper.setVisible(false);
}
}
};
final Anchor transparentLikeLink = new Anchor();
transparentLikeLink.addStyleName(StaticResourceBundle.INSTANCE.coreCss().transparentLikeLink());
transparentLikeLink.addClickHandler(new ClickHandler()
{
public void onClick(final ClickEvent arg0)
{
if (!isLiked)
{
ActivityLikeModel.getInstance().update(
new SetActivityLikeRequest(currentActivityId, LikeActionType.ADD_LIKE));
arg0.stopPropagation();
}
}
});
usersWhoLikedPanelWrapper.add(transparentLikeLink);
viewAll.setVisible(false);
viewAll.addClickHandler(new ClickHandler()
{
public void onClick(final ClickEvent arg0)
{
DialogContent dialogContent = new LikersDialogContent(currentActivityId);
Dialog dialog = new Dialog(dialogContent);
dialog.addStyleName(StaticResourceBundle.INSTANCE.coreCss().likerModal());
dialog.showCentered();
}
});
usersWhoLikedPanelWrapper.setVisible(false);
usersWhoLikedPanelWrapper.addStyleName(StaticResourceBundle.INSTANCE.coreCss().usersWhoLikedActivityWrapper());
usersWhoLikedPanelWrapper.addStyleName(StaticResourceBundle.INSTANCE.coreCss().likeCountWidget());
RootPanel.get().add(usersWhoLikedPanelWrapper);
final FocusPanel innerLikeCountPanel = new FocusPanel();
innerLikeCountPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().likeCount());
innerLikeCountPanel.add(innerLikeCountLink);
usersWhoLikedPanelWrapper.add(innerLikeCountPanel);
usersWhoLikedPanelWrapper.add(usersWhoLikedPanel);
usersWhoLikedPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().usersWhoLikedActivity());
FlowPanel userLikedHeader = new FlowPanel();
userLikedHeader.addStyleName(StaticResourceBundle.INSTANCE.coreCss().usersWhoLikedActivityHeader());
usersWhoLikedPanel.add(userLikedHeader);
userLikedBody.addStyleName(StaticResourceBundle.INSTANCE.coreCss().usersWhoLikedActivityBody());
usersWhoLikedPanel.add(userLikedBody);
FlowPanel userLikedFooter = new FlowPanel();
userLikedFooter.addStyleName(StaticResourceBundle.INSTANCE.coreCss().usersWhoLikedActivityFooter());
usersWhoLikedPanel.add(userLikedFooter);
userLikedBody.add(likedLabel);
userLikedBody.add(avatarPanel);
userLikedBody.add(viewAll);
usersWhoLikedPanelWrapper.sinkEvents(Event.ONMOUSEOUT | Event.ONMOUSEOVER | Event.ONCLICK);
hasUsersWhoLikedBeenAddedToRoot = true;
}
/**
* Constructor.
*
* @param inActivityId
* activity id.
* @param inLikeCount
* like count.
* @param inLikers
* who has liked this activity.
* @param inIsLiked
* if the person has liked the current activity.
*/
public LikeCountWidget(final Long inActivityId, final Integer inLikeCount, final List<PersonModelView> inLikers,
final Boolean inIsLiked)
{
thisActivityId = inActivityId;
thisIsLiked = inIsLiked;
initWidget(widget);
if (!hasUsersWhoLikedBeenAddedToRoot)
{
setup();
}
widget.addMouseOverHandler(new MouseOverHandler()
{
public void onMouseOver(final MouseOverEvent arg0)
{
showPanel();
usersWhoLikedPanelWrapper.setVisible(true);
}
});
likers = inLikers;
widget.addStyleName(StaticResourceBundle.INSTANCE.coreCss().likeCountWidget());
likeCount = inLikeCount;
final FlowPanel likeCountPanel = new FlowPanel();
likeCountPanel.addStyleName(StaticResourceBundle.INSTANCE.coreCss().likeCount());
likeCountPanel.add(likeCountLink);
widget.add(likeCountPanel);
EventBus.getInstance().addObserver(ActivityLikedChangeEvent.class, new Observer<ActivityLikedChangeEvent>()
{
public void update(final ActivityLikedChangeEvent event)
{
if (event.getActivityId().equals(inActivityId))
{
updatePanel(event.getActionType());
currentPanel.showPanel();
}
}
});
updatePanel(null);
}
/**
* Called to update the panel.
*/
private void showPanel()
{
currentPanel = this;
isLiked = thisIsLiked;
currentActivityId = thisActivityId;
viewAll.setVisible(false);
avatarPanel.clear();
DOM.setStyleAttribute(usersWhoLikedPanelWrapper.getElement(), "top", likeCountLink.getAbsoluteTop() + "px");
DOM.setStyleAttribute(usersWhoLikedPanelWrapper.getElement(), "left", likeCountLink.getAbsoluteLeft() + "px");
for (PersonModelView liker : likers)
{
avatarPanel.add(new AvatarLinkPanel(EntityType.PERSON, liker.getUniqueId(), liker.getId(), liker
.getAvatarId(), Size.VerySmall, liker.getDisplayName()));
}
if (likeCount > MAXLIKERSSHOWN)
{
viewAll.setVisible(true);
}
likedLabel.setText(likeCount + " people liked this");
innerLikeCountLink.setText(likeCount.toString());
}
/**
* Update the panel.
*
* @param likeActionType
* the action that's being taken.
*/
private void updatePanel(final LikeActionType likeActionType)
{
if (null != likeActionType)
{
thisIsLiked = !thisIsLiked;
if (likeActionType == LikeActionType.ADD_LIKE)
{
PersonModelView currentPerson = new PersonModelView();
currentPerson.setEntityId(Session.getInstance().getCurrentPerson().getId());
currentPerson.setAvatarId(Session.getInstance().getCurrentPerson().getAvatarId());
currentPerson.setDisplayName(Session.getInstance().getCurrentPerson().getDisplayName());
currentPerson.setAccountId(Session.getInstance().getCurrentPerson().getAccountId());
if (likers.size() >= MAXLIKERSSHOWN)
{
likerOverflow = likers.get(MAXLIKERSSHOWN - 1);
likers.remove(MAXLIKERSSHOWN - 1);
}
likers.add(0, currentPerson);
likeCount++;
if (!widget.isVisible())
{
EffectsFacade.nativeFadeIn(widget.getElement(), true);
}
}
else
{
for (PersonModelView liker : likers)
{
if (likeActionType == LikeActionType.REMOVE_LIKE
&& liker.getId() == Session.getInstance().getCurrentPerson().getId())
{
likers.remove(liker);
if (likerOverflow != null)
{
likers.add(9, likerOverflow);
}
}
}
likeCount--;
}
}
likeCountLink.setText(likeCount.toString());
widget.setVisible(likeCount > 0);
}
}