RcpActivator.java

package org.openlca.app.rcp;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;

import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.openlca.app.Preferences;
import org.openlca.app.db.Database;
import org.openlca.app.devtools.python.Python;
import org.openlca.app.logging.Console;
import org.openlca.app.logging.LoggerConfig;
import org.openlca.app.rcp.html.HtmlFolder;
import org.openlca.eigen.NativeLibrary;
import org.openlca.util.OS;
import org.osgi.framework.BundleContext;

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

	public static final String PLUGIN_ID = "olca-app";

	private org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(this.getClass());
	private static RcpActivator plugin;

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

	/**
	 * Returns the file found at the specified path as an input stream
	 * 
	 * @param path
	 *            The path to the file to load an input stream for (relative to
	 *            the plugin)
	 * @return The file found at the specified path as an input stream
	 */
	public static InputStream getStream(final String path) {
		try {
			return FileLocator.openStream(plugin.getBundle(), new Path(path), false);
		} catch (final IOException e) {
			return null;
		}
	}

	@Override
	public void start(final BundleContext context) throws Exception {
		super.start(context);
		plugin = this;
		File workspace = Workspace.init();
		log.trace("Workspace initialised at {}", workspace);
		LoggerConfig.setUp();
		WorkbenchLayout.initialize(workspace);
		log.trace("Start application. Workspace: {}.", Platform.getLocation());
		log.trace("Bundle {} started", PLUGIN_ID);
		log.trace("initialize HTML folder");
		HtmlFolder.initialize(RcpActivator.getDefault().getBundle(), "html/base_html.zip");
		Preferences.init();
		Job.create("init. Python", m -> {
			Python.getDir();
			return Status.OK_STATUS;
		}).schedule();
		log.trace("Try init olca-eigen");
		try {
			NativeLibrary.loadFromDir(workspace);
		} catch (UnsatisfiedLinkError e) {
			if (OS.getCurrent() == OS.Linux)
				MissingLibraryMessage.checkAndShow();
		}
		log.trace("olca-eigen loaded: {}", NativeLibrary.isLoaded());
	}

	@Override
	public void stop(final BundleContext context) throws Exception {
		log.trace("Stop bundle {}", PLUGIN_ID);
		Console.dispose();
		try {
			log.info("close database");
			Database.close();
		} catch (Exception e) {
			log.error("Failed to close database", e);
		}
		plugin = null;
		super.stop(context);
	}

	public static ImageDescriptor getImageDescriptor(String path) {
		return imageDescriptorFromPlugin(PLUGIN_ID, path);
	}
}