/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * Contributors:
 * 		Kamesh Sampath - initial implementation
 * 		Gregory Amerson - initial implementation review and ongoing maintenance
 *******************************************************************************/

package com.liferay.ide.ui.navigator;

import java.util.Set;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.navigator.ICommonContentExtensionSite;
import org.eclipse.ui.navigator.IPipelinedTreeContentProvider2;
import org.eclipse.ui.navigator.PipelinedShapeModification;
import org.eclipse.ui.navigator.PipelinedViewerUpdate;

/**
 * @author <a href="mailto:kamesh.sampath@hotmail.com">Kamesh Sampath</a>
 * @author Gregory Amerson
 */
public abstract class AbstractNavigatorContentProvider implements IPipelinedTreeContentProvider2
{
    private ICommonContentExtensionSite config;

    protected ICommonContentExtensionSite getConfig()
    {
        return this.config;
    }

    public Object[] getElements( Object inputElement )
    {
        return null;
    }

    public Object getParent( Object element )
    {
        return null;
    }

    @SuppressWarnings( "rawtypes" )
    public void getPipelinedChildren( Object aParent, Set theCurrentChildren )
    {
    }

    @SuppressWarnings( "rawtypes" )
    public void getPipelinedElements( Object anInput, Set theCurrentElements )
    {
    }

    public Object getPipelinedParent( Object anObject, Object aSuggestedParent )
    {
        return null;
    }

    public boolean hasChildren( Object element )
    {
        return false;
    }

    public boolean hasPipelinedChildren( Object element, boolean currentHasChildren )
    {
        return false;
    }

    public void init( ICommonContentExtensionSite config )
    {
        this.config = config;
    }

    public void inputChanged( Viewer viewer, Object oldInput, Object newInput )
    {
    }

    public PipelinedShapeModification interceptAdd( PipelinedShapeModification anAddModification )
    {
        return null;
    }

    public boolean interceptRefresh( PipelinedViewerUpdate aRefreshSynchronization )
    {
        return false;
    }

    public PipelinedShapeModification interceptRemove( PipelinedShapeModification aRemoveModification )
    {
        return null;
    }

    public boolean interceptUpdate( PipelinedViewerUpdate anUpdateSynchronization )
    {
        return false;
    }

    public void restoreState( IMemento aMemento )
    {
        // do nothing
    }

    public void saveState( IMemento aMemento )
    {
        // do nothing
    }
}