org.eclipse.babel.runtime.Activator.java Source code

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Here is the source code for org.eclipse.babel.runtime.Activator.java

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/*******************************************************************************
 * Copyright (c) 2008 Nigel Westbury.
 * 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:
 *    Nigel Westbury - initial API and implementation
 *******************************************************************************/

package org.eclipse.babel.runtime;

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

import org.eclipse.babel.runtime.external.ITranslatableSet;
import org.eclipse.babel.runtime.external.TranslatableText;
import org.eclipse.babel.runtime.external.TranslatableResourceBundle;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle
 */
public class Activator extends AbstractUIPlugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "org.eclipse.babel.runtime";

    // The shared instance
    private static Activator plugin;

    //Resource bundle.
    private TranslatableResourceBundle resourceBundle;

    /**
     * The constructor
     */
    public Activator() {
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
     */
    public void start(BundleContext context) throws Exception {
        super.start(context);
        plugin = this;

        /*
         * Registering the updatable bundles now ensures that they are more
         * likely to be seen by the translation dialog. If this plug-in has not
         * been started then they still won't be seen, so perhaps we really
         * should be registering updatable resource bundles in an extension
         * point.
         */

        /* This is the Java 6 method...
        resourceBundle = (TranslatableResourceBundle)ResourceBundle.getBundle("org.eclipse.babel.runtime.messages",
           new UpdatableResourceControl(getStateLocation()));
        */
        resourceBundle = TranslatableResourceBundle.get(getBundle(), getClass().getClassLoader(),
                "org.eclipse.babel.runtime.messages");

        TranslatableResourceBundle.register(getBundle(), "org.eclipse.babel.runtime.messages");

        // Now done in TranslatableNLS derived class      
        //      TranslatableResourceBundle.register(resourceBundle, getBundle());
    }

    /*
     * (non-Javadoc)
     * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)
     */
    public void stop(BundleContext context) throws Exception {
        plugin = null;
        super.stop(context);
    }

    /**
     * Returns the shared instance
     *
     * @return the shared instance
     */
    public static Activator getDefault() {
        return plugin;
    }

    /**
     * Returns an image descriptor for the image file at the given
     * plug-in relative path
     *
     * @param path the path
     * @return the image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return imageDescriptorFromPlugin(PLUGIN_ID, path);
    }

    public static TranslatableText getLocalizableText(String key) {
        return new TranslatableText(getDefault().resourceBundle, key);
    }

    public static ImageDescriptor createImageDescriptor(String name) {
        try {
            URL installURL = getDefault().getBundle().getEntry("/");
            URL url = new URL(installURL, name);
            return ImageDescriptor.createFromURL(url);
        } catch (MalformedURLException e) {
            // should not happen
            return ImageDescriptor.getMissingImageDescriptor();
        }
    }

    protected void initializeImageRegistry(ImageRegistry registry) {
        addToImageRegistry(registry, "icons/localizable.gif");
        addToImageRegistry(registry, "icons/nonLocalizable.gif");
    }

    private void addToImageRegistry(ImageRegistry registry, String filePath) {
        URL url = FileLocator.find(plugin.getBundle(), new Path(filePath), null);
        ImageDescriptor desc = ImageDescriptor.createFromURL(url);
        registry.put(filePath, desc);
    }

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

    private TranslatableMenuItem translatableMenu;
    private ITranslatableSet menuTextSet;

    public void setTranslatableMenu(TranslatableMenuItem translatableMenu, ITranslatableSet menuTextSet) {
        this.translatableMenu = translatableMenu;
        this.menuTextSet = menuTextSet;
    }

    public TranslatableMenuItem getTranslatableMenu() {
        return translatableMenu;
    }

    public ITranslatableSet getMenuTextSet() {
        return menuTextSet;
    }
}