GUIDemoMainController.java

/**
* 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.
* <hr>
* <a href="http://www.openolat.org">
* OpenOLAT - Online Learning and Training</a><br>
* This file has been modified by the OpenOLAT community. Changes are licensed
* under the Apache 2.0 license as the original file.
*/
package org.olat.gui.demo;

import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.olat.basesecurity.BaseSecurityManager;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.components.tree.GenericTreeNode;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.ControllerEventListener;
import org.olat.core.gui.control.Event;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.gui.control.generic.ajax.autocompletion.AutoCompleterController;
import org.olat.core.gui.control.generic.ajax.autocompletion.EntriesChosenEvent;
import org.olat.core.gui.control.generic.ajax.autocompletion.ListProvider;
import org.olat.core.gui.control.generic.ajax.autocompletion.ListReceiver;
import org.olat.core.gui.control.generic.layout.GenericMainController;
import org.olat.core.gui.util.CSSHelper;
import org.olat.core.id.Identity;
import org.olat.core.id.User;
import org.olat.core.id.UserConstants;

/**
 * Description:<br>
 * GUIDemoMainController shows GuiDemo-Controllers configured in olat_extensions.xml
 * 
 * <P>
 * Initial Date:  11.09.2007 <br>
 * @author Lavinia Dumitrescu
 * @author refactored to use GenericMainController by Roman Haag, frentix GmbH
 */
public class GUIDemoMainController extends GenericMainController {
		
	public GUIDemoMainController(UserRequest ureq, WindowControl wControl) {
		super(ureq,wControl);

		GenericTreeNode gtn = new GenericTreeNode();
		gtn.setTitle("Autocompletion");
		gtn.setUserObject("guidemo-autocompletion");
		gtn.setAltText("Input field autocompletion");
		addChildNodeToAppend(gtn);
		
		init(ureq);
	}
	

	@Override
	protected Controller handleOwnMenuTreeEvent(Object uobject, final UserRequest ureq) {
		if (uobject.equals("guidemo-autocompletion")) {
			// for a demo of autocompletion, do a user search
			ListProvider provider = new ListProvider() {
				public void getResult(String searchValue, ListReceiver receiver) {
					Map<String, String> userProperties = new HashMap<String, String>();
					// We can only search in mandatory User-Properties due to problems
					// with hibernate query with join and not existing rows
					userProperties.put(UserConstants.FIRSTNAME, searchValue);
					userProperties.put(UserConstants.LASTNAME, searchValue);
					userProperties.put(UserConstants.EMAIL, searchValue);
					List<Identity> res = BaseSecurityManager.getInstance().getVisibleIdentitiesByPowerSearch(searchValue, userProperties, false, null, null, null, null, null);
					int maxEntries = 15;
					boolean hasMore = false;
					for (Iterator<Identity> it_res = res.iterator(); (hasMore=it_res.hasNext()) && maxEntries > 0;) {
						maxEntries--;
						Identity ident = it_res.next();
						User u = ident.getUser();
						String key = ident.getKey().toString();
						String displayKey = ident.getName();
						String first = u.getProperty(UserConstants.FIRSTNAME, getLocale());
						String last = u.getProperty(UserConstants.LASTNAME, getLocale());
						String displayText = last + " " + first;
						receiver.addEntry(key, displayKey, displayText, CSSHelper.CSS_CLASS_USER);
					}					
					if(hasMore){
						receiver.addEntry("-1",".....");
					}
				}
			};
				
			Controller c = new AutoCompleterController(ureq, getWindowControl(), provider, null, true, 60, 3, null);
			
			// for demo only, normally use in parent controller
			c.addControllerListener(new ControllerEventListener() {
				public void dispatchEvent(UserRequest uureq, Controller source, Event event) {
					EntriesChosenEvent ece = (EntriesChosenEvent) event;
					String sel = ece.getEntries().toString();
					getWindowControl().setInfo("selected entrie(s):"+sel);
					
				}});
			return c;
		}
		return null;
	}	
	
}