/*******************************************************************************
 * Copyright (c) 2009 Tasktop Technologies 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:
 *     Tasktop Technologies - initial API and implementation
 *     Obeo - adaptation for Amalgamation, EMF based and no Mylyn dependency
 *     CEA LIST - adaptation to Papyrus
 *******************************************************************************/

package org.eclipse.papyrus.infra.discovery.ui.internal.common;

import java.net.MalformedURLException;
import java.net.URL;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.papyrus.infra.discovery.ui.Activator;

/**
 * @author David Green
 */
public class DiscoveryImages {
    private static final String T_OVR_32 = "ovr32"; //$NON-NLS-1$

    private static final String T_OBJ_16 = "obj16"; //$NON-NLS-1$

    private static final URL baseURL = Activator.getDefault().getBundle().getEntry("/icons/full/"); //$NON-NLS-1$

    /**
     * image descriptor for a warning overlay suitable for use with 32x32
     * images.
     */
    public static final ImageDescriptor OVERLAY_WARNING_32 = create(T_OVR_32, "message_warning.gif"); //$NON-NLS-1$

    public static final ImageDescriptor OVERLAY_INCUBATION_32 = create(T_OVR_32, "incubation.gif");
    
    public static final ImageDescriptor MESSAGE_INFO = create(T_OBJ_16, "message_info.gif"); //$NON-NLS-1$


    private static ImageDescriptor create(String prefix, String name) {
        try {
            return ImageDescriptor.createFromURL(makeIconFileURL(prefix, name));
        } catch (MalformedURLException e) {
            return ImageDescriptor.getMissingImageDescriptor();
        }
    }

    private static URL makeIconFileURL(String prefix, String name) throws MalformedURLException {
        if (baseURL == null) {
            throw new MalformedURLException();
        }

        StringBuilder buffer = new StringBuilder(prefix);
        buffer.append('/');
        buffer.append(name);
        return new URL(baseURL, buffer.toString());
    }

}