/*******************************************************************************
 * Copyright (c) 2007, 2008 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.ui.internal.views.markers;

import java.util.Collection;
import java.util.HashSet;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.part.IShowInSource;
import org.eclipse.ui.part.ShowInContext;

/**
 * MarkerShowInAdapter is the adapter for ExtendedMarkersViews to get an
 * IShowInSource.
 * 
 * @since 3.4
 * 
 */
public class MarkerShowInAdapter implements IAdapterFactory {

	private static Class[] classes = new Class[] { IShowInSource.class };

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.runtime.IAdapterFactory#getAdapter(java.lang.Object,
	 *      java.lang.Class)
	 */
	public Object getAdapter(Object adaptableObject, Class adapterType) {
		if (!(adaptableObject instanceof ExtendedMarkersView))
			return null;

		final ExtendedMarkersView view = (ExtendedMarkersView) adaptableObject;

		return new IShowInSource() {
			public ShowInContext getShowInContext() {
				IMarker[] markers = view.getSelectedMarkers();
				Collection resources = new HashSet();
				for (int i = 0; i < markers.length; i++) {
					resources.add(markers[i].getResource());
				}
				return new ShowInContext(view.getViewerInput(),
						new StructuredSelection(resources.toArray()));
			}

		};

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.runtime.IAdapterFactory#getAdapterList()
	 */
	public Class[] getAdapterList() {
		return classes;
	}

}