com.ibm.domino.osgi.debug.Activator.java Source code

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Here is the source code for com.ibm.domino.osgi.debug.Activator.java

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/*
*  Copyright IBM Corp. 2012
* 
* Licensed under the Apache License, Version 2.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at:
* 
* http://www.apache.org/licenses/LICENSE-2.0
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
* implied. See the License for the specific language governing 
* permissions and limitations under the License.
*/

package com.ibm.domino.osgi.debug;

import java.net.URL;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
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 Activator extends AbstractUIPlugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "com.ibm.domino.osgi.debug";

    // The shared instance
    private static Activator plugin;

    /**
     * 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;
    }

    /*
     * (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;
    }

    /**
      * @param key
      * @return
      */
    public Image getImage(String key) {
        Image image = getImageRegistry().get(key);
        if (image == null) {
            //Try to load it
            getImageRegistry().put(key, createImageDescriptor(key));
            image = getImageRegistry().get(key);
        }
        return image;
    }

    /**
     * @param path
     * @return
     */
    private ImageDescriptor createImageDescriptor(String path) {
        URL url = FileLocator.find(getBundle(), new Path(path), null);
        return url != null ? ImageDescriptor.createFromURL(url) : null;
    }

}