OpenWithFXMLHandler.java

package at.bestsolution.efxclipse.tooling.ui.handler;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.expressions.IEvaluationContext;
import org.eclipse.core.resources.IFile;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.program.Program;
import org.eclipse.ui.ISources;

public class OpenWithFXMLHandler extends AbstractHandler {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		IEvaluationContext context = (IEvaluationContext) event.getApplicationContext();
		ISelection s = (ISelection) context.getVariable(ISources.ACTIVE_MENU_SELECTION_NAME);
		if( s instanceof IStructuredSelection ) {
			Object o = ((IStructuredSelection) s).getFirstElement();
			if( o instanceof IFile ) {
				IFile f = (IFile) o;
				Program.launch(f.getLocation().toFile().getAbsolutePath());
			}
		}
		return null;
	}

}