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/*******************************************************************************
* Copyright (c) 2004, 2015 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.core.runtime.preferences;
import org.osgi.service.prefs.BackingStoreException;
/**
* This interface is implemented by objects that visit preference nodes.
* <p>
* Usage:
* </p>
* <pre>
* class Visitor implements IPreferenceNodeVisitor {
* public boolean visit(IEclipsePreferences node) {
* // your code here
* return true;
* }
* }
* IEclipsePreferences root = ...;
* root.accept(new Visitor());
* </pre>
* <p>
* Clients may implement this interface.
* </p>
*
* @see IEclipsePreferences#accept(IPreferenceNodeVisitor)
* @since 3.0
*/
public interface IPreferenceNodeVisitor {
/**
* Visits the given preference node.
*
* @param node the node to visit
* @return <code>true</code> if the node's children should
* be visited; <code>false</code> if they should be skipped
* @throws BackingStoreException
*/
public boolean visit(IEclipsePreferences node) throws BackingStoreException;
}
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