/*

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Definitions for the class ActivateTrace

 *

*/

package com.nokia.s60tools.analyzetool;

import org.eclipse.ui.IStartup;

import org.eclipse.core.runtime.*;

import com.nokia.s60tools.analyzetool.ui.IActionListener;

import com.nokia.s60tools.analyzetool.ui.MainView;

/**

 * Checks at plugin startup is trace plugin available

 * and sets MainView trace actions state

 * @author kihe

 *

 */

public class ActivateTrace implements IStartup {

	/**

	 * Check is AnalyzeTool trace plugin registered.

	 *

	 * If not registered disables AnalyzeTool trace buttons.

	 *

	 * @see org.eclipse.ui.IStartup#earlyStartup()

	 */

	public final void earlyStartup() {

		//get action listener

		final IActionListener listener = Activator.getActionListener();

		//get extension registry

		IExtensionRegistry registry = RegistryFactory.getRegistry();

		if( registry == null ) {

			MainView.enableTrace = false;

			if(listener != null) {

				listener.disableTraceActions(false);

			}

			return;

		}

		//get analyzetool extension

		final IExtensionPoint extensionPoint = registry.getExtensionPoint("com.nokia.s60tools.analyzetool.AnalyzeTool");

		//try find analyzetool trace extension

		IExtension extension = null;

		if( extensionPoint != null ) {

			extension = extensionPoint.getExtension("com.nokia.s60tools.analyzetool.trace.ActivateTrace");

		}

		//if trace extension found => enable trace buttons in the MainView

		if(extension != null && extension.isValid()) {

			MainView.enableTrace = true;

			if(listener != null) {

				listener.disableTraceActions(true);

			}

		}

		//no trace extension found => disable trace buttons

		else {

			MainView.enableTrace = false;

			if(listener != null) {

				listener.disableTraceActions(false);

			}

		}

	}

}