LaunchImages.java

/*******************************************************************************
 * Copyright (c) 2000, 2004 QNX Software Systems 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:
 *     QNX Software Systems - Initial API and implementation
 *     Synopsys, Inc. - ARC GNU Toolchain support
 *******************************************************************************/

package com.arc.embeddedcdt;

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

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;

/**
 */
public class LaunchImages {

    private static final String NAME_PREFIX = "com.arc.embeddedcdt" + '.';
    private static final int NAME_PREFIX_LENGTH = NAME_PREFIX.length();

    // The plugin registry
    private static ImageRegistry imageRegistry = new ImageRegistry();

    // Subdirectory (under the package containing this class) where 16 color images are
    private static URL fgIconBaseURL;
    static {
        fgIconBaseURL = Platform.getBundle(com.arc.embeddedcdt.LaunchPlugin.getUniqueIdentifier())
                .getEntry("/icons/"); //$NON-NLS-1$
    }

    private static final String T_TABS = "tabs/"; //$NON-NLS-1$
    // private static final String T_OBJS = "obj16/"; //$NON-NLS-1$

    public static String IMG_VIEW_COMMANDS_TAB = NAME_PREFIX + "commands_tab.gif"; //$NON-NLS-1$

    public static final ImageDescriptor DESC_TAB_COMMANDS = createManaged(T_TABS,
            IMG_VIEW_COMMANDS_TAB);

    public static void initialize() {
    }

    private static ImageDescriptor createManaged(String prefix, String name) {
        return createManaged(imageRegistry, prefix, name);
    }

    private static ImageDescriptor createManaged(ImageRegistry registry, String prefix,
            String name) {
        ImageDescriptor result = ImageDescriptor
                .createFromURL(makeIconFileURL(prefix, name.substring(NAME_PREFIX_LENGTH)));
        registry.put(name, result);
        return result;
    }

    public static Image get(String key) {
        return imageRegistry.get(key);
    }

    private static URL makeIconFileURL(String prefix, String name) {
        StringBuffer buffer = new StringBuffer(prefix);
        buffer.append(name);
        try {
            return new URL(fgIconBaseURL, buffer.toString());
        } catch (MalformedURLException e) {
            LaunchPlugin.getDefault().getLog().log(
                    new Status(IStatus.ERROR, LaunchPlugin.PLUGIN_ID, IStatus.ERROR, "Error", e));
        }
        return null;
    }

    /**
     * Helper method to access the image registry from the JavaPlugin class.
     */
    static ImageRegistry getImageRegistry() {
        return imageRegistry;
    }

}