Activator.java

/*******************************************************************************
 * Copyright (C) 2011 by Harry Blauberg
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package org.jaml.eclipse;

import java.util.LinkedList;
import java.util.List;

import org.eclipse.jdt.core.IType;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.jaml.eclipse.editors.JamlContentAssistProcessor;
import org.jaml.eclipse.utils.JDTUtils;
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 = "jaml-eclipse"; //$NON-NLS-1$

	// The shared instance
	private static Activator plugin;

	// Internal caching stuff
	private List<IType> availableTypes;

	/**
	 * The constructor
	 */
	public Activator() {
		// Load images
		getImageRegistry().put(JamlContentAssistProcessor.CLASS_PNG,
				getImageDescriptor("icons/class.png"));
		getImageRegistry().put(JamlContentAssistProcessor.PROP_PNG,
				getImageDescriptor("icons/property.png"));
		getImageRegistry().put(JamlContentAssistProcessor.TYPE_PNG,
				getImageDescriptor("icons/type.png"));
	}

	public List<IType> getAvailableTypes() {
		if (availableTypes == null) {
			availableTypes = new LinkedList<IType>();
			JDTUtils.loadAllTypes(availableTypes);
		}
		return availableTypes;
	}

	/*
	 * (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;
	}

	/**
	 * 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);
	}
}