RenderingContextListener.java

/*
 * Copyright 2013 Martin Kouba
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.trimou.cdi.context;

import org.trimou.engine.listener.MustacheListener;
import org.trimou.engine.listener.MustacheRenderingEvent;
import org.trimou.util.Checker;

/**
 * This listener initializes and destroys rendering context. Basically it's
 * possible to have more than one listener per application - listeners are bound
 * to the engine.
 *
 * @author Martin Kouba
 */
public final class RenderingContextListener implements MustacheListener {

    private final RenderingContext renderingContext;

    /**
     *
     * @param renderingContext
     */
    public RenderingContextListener(RenderingContext renderingContext) {
        Checker.checkArgumentNotNull(renderingContext);
        this.renderingContext = renderingContext;
    }

    @Override
    public void renderingStarted(final MustacheRenderingEvent event) {
        renderingContext.initialize(event);
        event.registerReleaseCallback(() -> renderingContext.destroy(event));
    }

}