/*
 * JBoss, Home of Professional Open Source
 * Copyright 2012 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @author tags. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */

package org.jboss.as.jsf.subsystem;

import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationDefinition;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.OperationStepHandler;
import org.jboss.as.controller.SimpleOperationDefinitionBuilder;
import org.jboss.as.controller.registry.OperationEntry;
import org.jboss.as.jsf.deployment.JSFModuleIdFactory;
import org.jboss.dmr.ModelNode;

/**
 * Defines and handles the list-active-jsf-impls operation.
 *
 * @author Stan Silvert ssilvert@redhat.com (C) 2012 Red Hat Inc.
 */
public class JSFImplListHandler implements OperationStepHandler {
    public static final String OPERATION_NAME = "list-active-jsf-impls";

    public static final OperationDefinition DEFINITION = new SimpleOperationDefinitionBuilder(OPERATION_NAME, JSFExtension.getResourceDescriptionResolver())
            .withFlags(OperationEntry.Flag.READ_ONLY, OperationEntry.Flag.RUNTIME_ONLY)
            .build();

    public void execute(OperationContext context, ModelNode operation) throws OperationFailedException {
        ModelNode result = context.getResult();
        result.setEmptyList();
        for (String impl : JSFModuleIdFactory.getInstance().getActiveJSFVersions()) {
            result.add(impl);
        }
        context.completeStep(OperationContext.RollbackHandler.NOOP_ROLLBACK_HANDLER);
    }

}
