org.springframework.ide.eclipse.boot.restart.RestartPluginImages.java Source code

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Here is the source code for org.springframework.ide.eclipse.boot.restart.RestartPluginImages.java

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/*******************************************************************************
 * Copyright (c) 2016 Pivotal, Inc.
 * 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:
 *     Phil Webb - initial API and implementation
 *******************************************************************************/
package org.springframework.ide.eclipse.boot.restart;

import java.net.URL;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.PlatformUI;
import org.osgi.framework.Bundle;

public class RestartPluginImages {

    private static ImageRegistry imageRegistry;

    private static String ICONS_PATH = "$nl$/icons/full/"; //$NON-NLS-1$

    private static void declareImages() {
        declareRegistryImage(RestartConstants.IMG_RESTART_ICON, ICONS_PATH + "refresh_tab.png"); //$NON-NLS-1$
    }

    private final static void declareRegistryImage(String key, String path) {
        ImageDescriptor desc = ImageDescriptor.getMissingImageDescriptor();
        Bundle bundle = Platform.getBundle(RestartConstants.PLUGIN_ID);
        URL url = null;
        if (bundle != null) {
            url = FileLocator.find(bundle, new Path(path), null);
            if (url != null) {
                desc = ImageDescriptor.createFromURL(url);
            }
        }
        imageRegistry.put(key, desc);
    }

    public static ImageRegistry getImageRegistry() {
        if (imageRegistry == null) {
            initializeImageRegistry();
        }
        return imageRegistry;
    }

    public synchronized static boolean isInitialized() {
        return imageRegistry != null;
    }

    public synchronized static ImageRegistry initializeImageRegistry() {
        if (imageRegistry == null) {
            imageRegistry = new ImageRegistry(PlatformUI.getWorkbench().getDisplay());
            declareImages();
        }
        return imageRegistry;
    }

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

    public static ImageDescriptor getImageDescriptor(String key) {
        return getImageRegistry().getDescriptor(key);
    }

}