/*******************************************************************************
 * Copyright (c) 2006, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.internal.ui.model.elements;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.model.IRegisterGroup;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IPresentationContext;
import org.eclipse.debug.internal.ui.viewers.model.provisional.IViewerUpdate;
import org.eclipse.debug.ui.IDebugUIConstants;

/**
 * Register group content provider.
 * 
 * @since 3.3 
 */
public class RegisterGroupContentProvider extends ElementContentProvider {

	protected int getChildCount(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
		return ((IRegisterGroup)element).getRegisters().length;
	}

	protected Object[] getChildren(Object parent, int index, int length, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
		return getElements(((IRegisterGroup)parent).getRegisters(), index, length);
	}
	
	protected boolean hasChildren(Object element, IPresentationContext context, IViewerUpdate monitor) throws CoreException {
		return ((IRegisterGroup)element).hasRegisters();
	}

	protected boolean supportsContextId(String id) {
		return IDebugUIConstants.ID_REGISTER_VIEW.equals(id);
	}

}