/**
* Copyright 2010 Google Inc.
*
* 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 com.google.livingstories.client.lsp;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import com.google.livingstories.client.ClientCaches;
import com.google.livingstories.client.EventContentItem;
import com.google.livingstories.client.ui.DateWidget;
import com.google.livingstories.client.ui.Link;
import com.google.livingstories.client.util.AnalyticsUtil;
import com.google.livingstories.client.util.LivingStoryControls;
import com.google.livingstories.client.util.LivingStoryData;
import java.util.List;
/**
* Widget that displays a list of the 5 latest important events.
* Clicking on an event should scroll the user to that event in the
* main content item list and open it.
*/
public class RecentEventsList extends Composite {
private static final int MAX_EVENT_COUNT = 5;
private FlowPanel contentPanel;
private static String TITLE = LspMessageHolder.consts.recentEventsListTitle();
private static String PROBLEM_TEXT = LspMessageHolder.consts.recentEventsListProblem();
public RecentEventsList() {
contentPanel = new FlowPanel();
contentPanel.add(getHeader());
contentPanel.setWidth("250px");
initWidget(contentPanel);
}
public void load() {
ClientCaches.getImportantEvents(new ImportantContentItemsCallback());
}
private Widget getHeader() {
Label header = new Label(TITLE);
header.setStylePrimaryName("sectionHeader");
return header;
}
private class ImportantContentItemsCallback implements AsyncCallback<List<EventContentItem>> {
@Override
public void onFailure(Throwable caught) {
contentPanel.add(new Label(PROBLEM_TEXT));
}
@Override
public void onSuccess(List<EventContentItem> result) {
if (result.isEmpty()) {
contentPanel.setVisible(false);
} else {
for (int i = 0; i < result.size(); i++) {
if (i == MAX_EVENT_COUNT) {
break;
}
contentPanel.add(createEventWidget(result.get(i)));
}
}
}
private Widget createEventWidget(final EventContentItem event) {
FlowPanel eventPanel = new FlowPanel();
Link update = new Link(event.getEventUpdate()) {
@Override
protected void onClick(ClickEvent e) {
AnalyticsUtil.trackVerticalTimelineClick(
LivingStoryData.getLivingStoryUrl(), event.getId());
LivingStoryControls.goToContentItem(event.getId());
}
};
eventPanel.add(update);
eventPanel.add(new DateWidget(
event.getEventEndDate(), event.getEventStartDate(), event.getTimestamp()));
eventPanel.setStylePrimaryName("rightColumnElement");
return eventPanel;
}
}
}