/*******************************************************************************
* Copyright (c) 2007 Wind River Systems, Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Markus Schorn - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.typehierarchy;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
public class THContentProvider implements ITreeContentProvider {
private static final Object[] NO_CHILDREN= new Object[0];
private THHierarchyModel fModel;
public THContentProvider() {
}
final public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
fModel= (THHierarchyModel) newInput;
}
public void dispose() {
fModel= null;
}
final public Object[] getElements(Object inputElement) {
if (fModel == null) {
return NO_CHILDREN;
}
return fModel.getHierarchyRootElements();
}
final public boolean hasChildren(Object element) {
if (element instanceof THNode) {
return ((THNode) element).hasChildren();
}
return false;
}
public Object[] getChildren(Object element) {
if (element instanceof THNode) {
return ((THNode) element).getChildren();
}
return NO_CHILDREN;
}
public Object getParent(Object element) {
if (element instanceof THNode) {
return ((THNode) element).getParent();
}
return null;
}
}