com.aptana.ide.xul.XULPlugin.java Source code

Introduction

Here is the source code for com.aptana.ide.xul.XULPlugin.java

Source

/**
 * Copyright (c) 2005-2006 Aptana, 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. If redistributing this code,
 * this entire header must remain intact.
 */
package com.aptana.ide.xul;

import java.util.HashMap;

import org.eclipse.jface.resource.ImageDescriptor;
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 XULPlugin extends AbstractUIPlugin {

    /**
     * The plug-in ID
     */
    public static final String PLUGIN_ID = "com.aptana.ide.xul"; //$NON-NLS-1$

    /**
     * Element image
     */
    public static final String ELEMENT_IMG_ID = "ELEMENT_IMG_ID"; //$NON-NLS-1$

    /**
     * Text image
     */
    public static final String TEXT_IMG_ID = "TEXT_IMG_ID"; //$NON-NLS-1$

    // The shared instance
    private static XULPlugin plugin;

    // takes care of disposing the images
    private HashMap<String, ImageDescriptor> imageDescMap = new HashMap<String, ImageDescriptor>();

    /**
     * The constructor
     */
    public XULPlugin() {
        plugin = this;
        imageDescMap.put(ELEMENT_IMG_ID, getImageDescriptor("icons/html_tag.gif")); //$NON-NLS-1$
        imageDescMap.put(TEXT_IMG_ID, getImageDescriptor("icons/text.gif")); //$NON-NLS-1$
    }

    /**
     * Gets an image from an ID
     * 
     * @param imageID -
     *            image id
     * @return - Image
     */
    public Image getImage(String imageID) {

        Image image = getImageRegistry().get(imageID);
        // need to create and add to registry
        if (image == null) {
            ImageDescriptor imgDescriptor = (ImageDescriptor) imageDescMap.get(imageID);

            if (imgDescriptor != null) {
                // create the image and add to registry
                image = imgDescriptor.createImage();
                getImageRegistry().put(imageID, image);
            }

        }
        return image;

    }

    /**
     * Gets an image descriptor from the registry
     * 
     * @param imageID
     * @return - Image descriptor
     */
    public ImageDescriptor getImageDescriptorFromRegistry(String imageID) {
        ImageDescriptor imgDescriptor = (ImageDescriptor) imageDescMap.get(imageID);
        return imgDescriptor;
    }

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

    /**
     * @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 XULPlugin getDefault() {
        return plugin;
    }

    /**
     * Gets an image descriptor from a path
     * 
     * @param path
     * @return - image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return AbstractUIPlugin.imageDescriptorFromPlugin(PLUGIN_ID, path);
    }

}