/**
* 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) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/
package org.olat.catalog.ui;
import java.util.List;
import org.olat.basesecurity.ManagerFactory;
import org.olat.catalog.CatalogEntry;
import org.olat.catalog.CatalogManager;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.Component;
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.gui.control.generic.ajax.tree.AjaxTreeModel;
import org.olat.core.gui.control.generic.ajax.tree.TreeController;
import org.olat.core.gui.control.generic.ajax.tree.TreeNodeClickedEvent;
import org.olat.repository.RepositoryEntry;
/**
* Description:<br>
* The ajax catalog add controller implements a dynamic tree that offers catalog
* navigating and selection of a catalog element. The to be added reporitory
* entry is then added to the selected catalog category
* <p>
* Events fired by this controller:
* <ul>
* <li>Event.CANCELED_EVENT</li>
* <li>Event.DONE_EVENT</li>
* </ul>
* <P>
* Initial Date: 30.05.2008 <br>
*
* @author gnaegi
*/
public class CatalogAjaxAddController extends BasicController {
private TreeController treeCtr;
private AjaxTreeModel treeModel;
private VelocityContainer contentVC;
private RepositoryEntry toBeAddedEntry;
private Link cancelLink, selectLink;
private CatalogEntry selectedParent;
public CatalogAjaxAddController(UserRequest ureq, WindowControl wControl, RepositoryEntry toBeAddedEntry) {
super(ureq, wControl);
this.toBeAddedEntry = toBeAddedEntry;
// Main view is a velocity container
contentVC = createVelocityContainer("catalogentryajaxadd");
contentVC.contextPut("entryname", toBeAddedEntry.getDisplayname());
CatalogManager cm = CatalogManager.getInstance();
CatalogEntry rootce = (CatalogEntry) cm.getRootCatalogEntries().get(0);
// Build tree model
treeModel = new CatalogAjaxTreeModel(rootce, null, null, false, false);
// Create the ajax tree controller, add it to your main view
treeCtr = new TreeController(ureq, getWindowControl(), rootce.getName(), treeModel, null);
listenTo(treeCtr);
contentVC.put("treeCtr", treeCtr.getInitialComponent());
cancelLink = LinkFactory.createButton("cancel", contentVC, this);
// select link is disabled until an item is selected
selectLink = LinkFactory.createButton("select", contentVC, this);
selectLink.setEnabled(false);
putInitialPanel(contentVC);
}
/**
* @see org.olat.core.gui.control.DefaultController#doDispose()
*/
@Override
protected void doDispose() {
contentVC = null;
treeModel = null;
// Controllers auto disposed by basic controller
treeCtr = null;
toBeAddedEntry = null;
cancelLink = null;
selectLink = null;
}
/**
* @see org.olat.core.gui.control.DefaultController#event(org.olat.core.gui.UserRequest, org.olat.core.gui.control.Controller, org.olat.core.gui.control.Event)
*/
protected void event(UserRequest ureq, Controller source, Event event) {
if (source == treeCtr) {
if (event instanceof TreeNodeClickedEvent) {
TreeNodeClickedEvent clickedEvent = (TreeNodeClickedEvent) event;
// build new entry for this catalog level
CatalogManager cm = CatalogManager.getInstance();
String nodeId = clickedEvent.getNodeId();
Long newParentId = Long.parseLong(nodeId);
CatalogEntry newParent = cm.loadCatalogEntry(newParentId);
// check first if this repo entry is already attached to this new parent
List<CatalogEntry> existingChildren = cm.getChildrenOf(newParent);
for (CatalogEntry existingChild : existingChildren) {
RepositoryEntry existingRepoEntry = existingChild.getRepositoryEntry();
if (existingRepoEntry != null && existingRepoEntry.equalsByPersistableKey(toBeAddedEntry)) {
showError("catalog.tree.add.already.exists", toBeAddedEntry.getDisplayname());
return;
}
}
// don't create entry right away, user must select submit button first
selectedParent = newParent;
// enable link, set dirty button class and trigger redrawing
selectLink.setEnabled(true);
selectLink.setCustomEnabledLinkCSS("b_button b_button_dirty");
selectLink.setDirty(true);
}
}
}
/**
* @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 == cancelLink) {
fireEvent(ureq, Event.CANCELLED_EVENT);
} else if (source == selectLink) {
if (selectedParent != null) {
CatalogManager cm = CatalogManager.getInstance();
CatalogEntry newEntry = cm.createCatalogEntry();
newEntry.setRepositoryEntry(toBeAddedEntry);
newEntry.setName(toBeAddedEntry.getDisplayname());
newEntry.setDescription(toBeAddedEntry.getDescription());
newEntry.setType(CatalogEntry.TYPE_LEAF);
newEntry.setOwnerGroup(ManagerFactory.getManager().createAndPersistSecurityGroup());
// save entry
cm.addCatalogEntry(selectedParent, newEntry);
fireEvent(ureq, Event.DONE_EVENT);
}
}
}
}