/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) frentix GmbH<br>
* http://www.frentix.com<br>
* <p>
*/
package org.olat.course.nodes.feed;
import java.util.ArrayList;
import java.util.List;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.Component;
import org.olat.core.gui.components.htmlsite.OlatCmdEvent;
import org.olat.core.gui.components.link.Link;
import org.olat.core.gui.components.link.LinkFactory;
import org.olat.core.gui.components.velocity.VelocityContainer;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.Event;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.control.controller.BasicController;
import org.olat.core.util.Formatter;
import org.olat.modules.webFeed.FeedSecurityCallback;
import org.olat.modules.webFeed.FeedViewHelper;
import org.olat.modules.webFeed.managers.FeedManager;
import org.olat.modules.webFeed.models.Feed;
import org.olat.modules.webFeed.models.Item;
import org.olat.modules.webFeed.ui.FeedUIFactory;
import org.olat.resource.OLATResource;
/**
* <h3>Description:</h3> The feed peekview controller displays the configurable
* amount of the most recent feed items.
* <p>
* <h4>Events fired by this Controller</h4>
* <ul>
* <li>OlatCmdEvent to notify that a jump to the course node is desired</li>
* </ul>
* <p>
* Initial Date: 29.09.2009 <br>
*
* @author gnaegi, gnaegi@frentix.com, www.frentix.com
*/
public class FeedPeekviewController extends BasicController implements Controller {
// the current course node id
private final String nodeId;
/**
* Constructor for the feed peekview controller
*
* @param olatResource The feed olat resource
* @param ureq the User reques
* @param wControl The window control
* @param callback the feed security callback
* @param courseId The course ID in which the feed is used
* @param nodeId The current course node ID
* @param feedUIFactory The feed UI factory
* @param itemsToDisplay number of items to be displayed, must be > 0
* @param wrapperCssClass An optional wrapper CSS class that is added to the
* wrapper DIV to style icons etc
*/
public FeedPeekviewController(OLATResource olatResource, UserRequest ureq, WindowControl wControl, FeedSecurityCallback callback,
Long courseId, String nodeId, FeedUIFactory feedUIFactory, int itemsToDisplay, String wrapperCssClass) {
super(ureq, wControl);
this.nodeId = nodeId;
FeedManager feedManager = FeedManager.getInstance();
Feed feed = feedManager.readFeed(olatResource);
VelocityContainer peekviewVC = createVelocityContainer("peekview");
peekviewVC.contextPut("wrapperCssClass", wrapperCssClass != null ? wrapperCssClass : "");
// add gui helper
FeedViewHelper helper = new FeedViewHelper(feed, getIdentity(), getTranslator(), courseId, nodeId, callback);
peekviewVC.contextPut("helper", helper);
// add items, only as many as configured
List<Item> allItems = helper.getItems(callback);
List<Item> items = new ArrayList<Item>();
for (int i = 0; i < allItems.size(); i++) {
if (items.size() == itemsToDisplay) {
break;
}
// add item itself if published
Item item = allItems.get(i);
if (item.isPublished()) {
items.add(item);
// add link to item
// Add link to jump to course node
Link nodeLink = LinkFactory.createLink("nodeLink_" + item.getGuid(), peekviewVC, this);
nodeLink.setCustomDisplayText(item.getTitle());
nodeLink.setCustomEnabledLinkCSS("b_with_small_icon_left o_feed_item_icon o_gotoNode");
nodeLink.setUserObject(item.getGuid());
}
}
peekviewVC.contextPut("items", items);
// Add link to show all items (go to node)
Link allItemsLink = LinkFactory.createLink("peekview.allItemsLink", peekviewVC, this);
allItemsLink.setCustomEnabledLinkCSS("b_float_right");
// Add Formatter for proper date formatting
peekviewVC.contextPut("formatter", Formatter.getInstance(getLocale()));
//
this.putInitialPanel(peekviewVC);
}
/**
* @see org.olat.core.gui.control.DefaultController#event(org.olat.core.gui.UserRequest,
* org.olat.core.gui.components.Component,
* org.olat.core.gui.control.Event)
*/
@Override
protected void event(UserRequest ureq, Component source, Event event) {
if (source instanceof Link) {
Link nodeLink = (Link) source;
String itemId = (String) nodeLink.getUserObject();
if (itemId == null) {
fireEvent(ureq, new OlatCmdEvent(OlatCmdEvent.GOTONODE_CMD, nodeId));
} else {
fireEvent(ureq, new OlatCmdEvent(OlatCmdEvent.GOTONODE_CMD, nodeId + "/" + itemId));
}
}
}
/**
* @see org.olat.core.gui.control.DefaultController#doDispose()
*/
@Override
protected void doDispose() {
// nothing to dispose
}
}