/**
 * Copyright (c) 2011, 2014 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: 
 * 		Florian Pirchner - Initial implementation
 */
package org.eclipse.osbp.vaaclipse.addons.common.state;

import org.eclipse.e4.core.contexts.ContextFunction;
import org.eclipse.e4.core.contexts.ContextInjectionFactory;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.osbp.runtime.common.state.ISharedStateContextProvider;
import org.osgi.service.component.annotations.Component;

/**
 * A factory for creating SharedStateContextAdapter objects.
 */
@Component(service = org.eclipse.e4.core.contexts.IContextFunction.class, property = { "service.context.key=org.eclipse.osbp.runtime.common.state.ISharedStateContextProvider" })
public class SharedStateContextAdapterFactory extends ContextFunction {

	/* (non-Javadoc)
	 * @see org.eclipse.e4.core.contexts.ContextFunction#compute(org.eclipse.e4.core.contexts.IEclipseContext, java.lang.String)
	 */
	@Override
	public Object compute(IEclipseContext context, String contextKey) {
		// add the new object to the application context
		MApplication application = context.get(MApplication.class);
		IEclipseContext appCtx = application.getContext();
		
		SharedStateContextAdapter provider = ContextInjectionFactory.make(
				SharedStateContextAdapter.class, appCtx);
		
		appCtx.set(ISharedStateContextProvider.class, provider);

		return provider;
	}
}