/com.plectix.rulestudio.core/src/com/plectix/rulestudio/core/Activator.java

package com.plectix.rulestudio.core;



import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.ui.plugin.AbstractUIPlugin;

import org.eclipse.ui.progress.UIJob;

import org.osgi.framework.BundleContext;

import org.osgi.framework.Version;



import com.plectix.rulestudio.core.usagedata.UsageDataCollector;



/**

 * 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.plectix.rulestudio.core";

	private static final String DEFAULT_CELLUCIDATE_URL = "http://api.rulebase.org";

	private static String url = null;



	// 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;

		verifyPlatform();

		UsageDataCollector.getInstance().start();

	}



	/*

	 * (non-Javadoc)

	 * @see org.eclipse.ui.plugin.AbstractUIPlugin#stop(org.osgi.framework.BundleContext)

	 */

	public void stop(BundleContext context) throws Exception {

		UsageDataCollector.getInstance().stop();

		plugin = null;

		super.stop(context);

	}



	/**

	 * Returns the shared instance

	 *

	 * @return the shared instance

	 */

	public static Activator getDefault() {

		return plugin;

	}

	

	public Version getVersion() {

		return getBundle().getVersion();

	}

	

	public String getUrl() {

		if (url == null) {

			String setUrl = System.getProperty("cellucidate");

			if (setUrl instanceof String && setUrl.length() > 0)

				url = setUrl;

			else

				url = DEFAULT_CELLUCIDATE_URL;

		}

		return url;

	}

	

	public void verifyPlatform() {

		final String version = System.getProperty("java.version");

		final String vendor = System.getProperty("java.vendor");

		final String osVersion = System.getProperty("os.version");

		Version os = new Version(osVersion);

		boolean reportError = false;

		if (vendor.startsWith("Apple") && os.getMajor() <= 10 && os.getMinor() <= 5) {

			if (!version.startsWith("1.5")) {

				reportError = true;

			}

		} else if (!version.startsWith("1.6")) {

			reportError = true;

		}

		

		if (reportError) {

			UIJob fixup = new UIJob("Update client JRE.") {



				@Override

				public IStatus runInUIThread(IProgressMonitor monitor) {

					String message;

					if (vendor.startsWith("Apple")) {

						message = "MAC clients before 10.6 require Java 1.5.";

					} else {

						message = "This client requires Java 1.6 for Windows and Linux.";

					}

					Display disp = Display.getCurrent();

					if (disp == null) 

						disp = Display.getDefault();

					Shell parent = disp.getActiveShell();

					MessageDialog.openError(parent, "Java Version Error", message);

					

					return Status.OK_STATUS;

				}

				

			};

			fixup.setSystem(true);

			fixup.setUser(false);

			fixup.schedule();

			

		}



	}



}