/*******************************************************************************
 * Copyright (c) 2005-2008 Polarion Software.
 * 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:
 *    Igor Burilo - Initial API and implementation
 *******************************************************************************/

package org.eclipse.team.svn.ui.lock;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;

/**
 * Content provider for lock resources
 * 
 * @author Igor Burilo
 */
public class LockResourcesTreeContentProvider implements ITreeContentProvider {
	
	protected LockResource root;
	
	public void initialize(LockResource root) {
		this.root = root;
	}
	
	public Object[] getChildren(Object parentElement) {
		List<LockResource> res = new ArrayList<LockResource>();		
		LockResource node = (LockResource) parentElement;
		LockResource[] children = node.getChildren();
		for (LockResource child : children) {
			if (!child.isFile()) {
				res.add(child);
			}
		}
		return res.toArray(new LockResource[0]);
	}
	
	public boolean hasChildren(Object element) {
		LockResource node = (LockResource) element;
		LockResource[] children = node.getChildren();
		for (LockResource child : children) {
			if (!child.isFile()) {
				return true;
			} 
		}
		return false;
	}
	
	public Object getParent(Object element) {
		return ((LockResource)element).getParent();
	}

	public Object[] getElements(Object inputElement) {
		return new Object[] {this.root};
	}

	public void dispose() {
		
	}

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

}