/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
/**
 * Implementation of IMarkerImageProvider to provide the image
 * path names for problem markers.
 */
public class ProblemImageProvider implements IMarkerImageProvider {
/**
 * TaskImageProvider constructor comment.
 */
public ProblemImageProvider() {
	super();
}
/**
 * Returns the relative path for the image
 * to be used for displaying an marker in the workbench.
 * This path is relative to the plugin location
 *
 * Returns <code>null</code> if there is no appropriate image.
 *
 * @param marker The marker to get an image path for.
 *
 * @see org.eclipse.jface.resource.FileImageDescriptor
 */
public String getImagePath(IMarker marker) {
	String iconPath = "icons/full/";//$NON-NLS-1$		
	if (isMarkerType(marker, IMarker.PROBLEM)) {
		switch (marker.getAttribute(IMarker.SEVERITY, IMarker.SEVERITY_WARNING)) {
			case IMarker.SEVERITY_ERROR:
				return iconPath + "obj16/error_tsk.gif";//$NON-NLS-1$
			case IMarker.SEVERITY_WARNING:
				return iconPath + "obj16/warn_tsk.gif";//$NON-NLS-1$
			case IMarker.SEVERITY_INFO:
				return iconPath + "obj16/info_tsk.gif";//$NON-NLS-1$
		}
	}
	return null;
}
/**
 * Returns whether the given marker is of the given type (either directly or indirectly).
 */
private boolean isMarkerType(IMarker marker, String type) {
	try {
		return marker.isSubtypeOf(type);
	} catch (CoreException e) {
		return false;
	}
}
}