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/*******************************************************************************
* Copyright (c) 2005, 2020 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.viewers;
/**
*
* A content provider that expects every element to be a TreeNode.
* Most methods delegate to TreeNode. dispose()
* and inputChanged(Viewer, Object, Object) do nothing by
* default.
*
*
* This class and all of its methods may be overridden or extended.
*
*
* @since 3.2
* @see org.eclipse.jface.viewers.TreeNode
*/
public class TreeNodeContentProvider implements ITreeContentProvider {
@Override
public Object[] getChildren(final Object parentElement) {
final TreeNode node = (TreeNode) parentElement;
return node.getChildren();
}
@Override
public Object[] getElements(final Object inputElement) {
if (inputElement instanceof TreeNode[]) {
return (TreeNode[]) inputElement;
}
return new Object[0];
}
@Override
public Object getParent(final Object element) {
final TreeNode node = (TreeNode) element;
return node.getParent();
}
@Override
public boolean hasChildren(final Object element) {
final TreeNode node = (TreeNode) element;
return node.hasChildren();
}
}