/**
* 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.
* <p>
*/
package org.olat.core.util.nodes;
/**
* Description: <br>
*
* @author Felix Jost
*/
public interface INode {
/**
* @return node identifier
*/
public String getIdent();
/**
* @return parent of this node
*/
public INode getParent();
/**
* @param newParent
*/
public void setParent(INode newParent);
/**
*
*/
public void removeFromParent();
/**
*
*/
public void removeAllChildren();
/**
* @return number of children attached to this node
*/
public int getChildCount();
/**
* @param childIndex
* @return node at index childIndex
*/
public INode getChildAt(int childIndex);
/**
* @return position of this node
*/
public int getPosition();
/**
* Adds a child to the current node. IMPORTANT: Sets the parent of the child
* to this node. I.e. detach from old parent.
*
* @param newChild
*/
public void addChild(INode newChild);
/**
* @param newChild
* @param index
*/
public void insert(INode newChild, int index);
/**
* @param node
*/
public void remove(INode node);
}