com.jcraft.eclipse.jcterm.JCTermPlugin.java Source code

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Here is the source code for com.jcraft.eclipse.jcterm.JCTermPlugin.java

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/*******************************************************************************
 * Copyright (c) 2007 JCraft, 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:
 *     JCraft, Inc. - initial API and implementation
 *******************************************************************************/

package com.jcraft.eclipse.jcterm;

import java.net.URL;
import java.util.Hashtable;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

import com.jcraft.eclipse.jcterm.internal.Util;

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

    public static final String ID = "com.jcraft.eclipse.jcterm";

    // The shared instance
    private static JCTermPlugin plugin;

    private static Hashtable imageDescriptors = new Hashtable(20);

    /**
     * The constructor
     */
    public JCTermPlugin() {
        plugin = this;
    }

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

    /*
     * (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 JCTermPlugin getDefault() {
        return plugin;
    }

    /**
     * Returns the image descriptor for the given image ID. Returns null if
     * there is no such image.
     */
    public static ImageDescriptor getImageDescriptor(String id) {
        return (ImageDescriptor) imageDescriptors.get(id);
    }

    /**
     * Creates an image and places it in the image registry.
     */
    protected void createImageDescriptor(String id) {
        URL url = FileLocator.find(JCTermPlugin.getDefault().getBundle(), new Path(IUIConstants.ICON_PATH + id),
                null);
        ImageDescriptor desc = ImageDescriptor.createFromURL(url);
        imageDescriptors.put(id, desc);
    }

    /**
     * Initializes the table of images used in this plugin.
     */
    private void initializeImages() {
        createImageDescriptor(IUIConstants.IMG_TERMINAL32);
        createImageDescriptor(IUIConstants.IMG_TERMINAL16);
        createImageDescriptor(IUIConstants.IMG_SAVEADD16);
        createImageDescriptor(IUIConstants.IMG_SAVEADD32);
        createImageDescriptor(IUIConstants.IMG_OLD_EDIT_FIND16);
        createImageDescriptor(IUIConstants.IMG_LAYER_SELECT);
        createImageDescriptor(IUIConstants.IMG_RECORDING);
        createImageDescriptor(IUIConstants.IMG_STOP);
        createImageDescriptor(IUIConstants.IMG_MULTI_SELECT);
    }
}