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package org.glassfish.jersey.server.mvc.spi;

import javax.ws.rs.ConstrainedTo;
import javax.ws.rs.RuntimeType;
import javax.ws.rs.core.MediaType;

import org.glassfish.jersey.server.mvc.Viewable;
import org.glassfish.jersey.spi.Contract;

/**
 * The context for resolving an instance of {@link org.glassfish.jersey.server.mvc.Viewable} to an instance of {@link
 * ResolvedViewable}.
 * 
 * Note:
 * {@link ViewableContext#resolveViewable(org.glassfish.jersey.server.mvc.Viewable, javax.ws.rs.core.MediaType, Class, TemplateProcessor)}
 * method may be called multiple times (combination of all the calculated possible media types of the response with all found
 * {@link TemplateProcessor template processors}).
 *
 * @author Paul Sandoz (paul.sandoz at oracle.com)
 * @author Michal Gajdos (michal.gajdos at oracle.com)
 */
@Contract
@ConstrainedTo(RuntimeType.SERVER)
public interface ViewableContext {

    /**
     * Resolve given {@link org.glassfish.jersey.server.mvc.Viewable viewable} using {@link javax.ws.rs.core.MediaType mediaType},
     * {@code resourceClass} and {@link TemplateProcessor templateProcessor}.
     * 

     * If the template name of the viewable is not absolute then the given {@code resourceClass} may be utilized to resolve
     * the relative template name into an absolute template name.
     * 

     * 

     * {@code resourceClass} contains class of the matched resource.
     * 
     *
     * @param viewable viewable to be resolved.
     * @param mediaType media type the viewable may be transformed into.
     * @param resourceClass resource class.
     * @param templateProcessor template processor to be used.
     * @return resolved viewable or {@code null} if the viewable cannot be resolved.
     */
    public ResolvedViewable resolveViewable(final Viewable viewable, final MediaType mediaType, final Class resourceClass,
                                            final TemplateProcessor templateProcessor);
}