[aerogear-dev] HTML View Responder

Hi, I'm working on AEROGEAR-693 <https://issues.jboss.org/browse/AEROGEAR-693> and trying to figure out how to implement this in the best way. At the moment, the default type of ViewResponder is the MvcResponder which forwards to a JSP page. By default, this means that if you do not specify a *produces()* method on a route, this is what you'll get. Now, the media types that are passed to the *produces()* method determine two things: 1. How to match to Route that is the target of a request, matching the HTTP *Accept* header. 2. Determining the ViewResponder to be used. The issue here is that for both a HTMLResponder and a JSPResponder the media type would in both cases be*text/html*. How do we determine which one the users actually has created a view for (jsp or html page)? Well, we need some way to differantiate between a route that will respond with a html view, but which uses a ceratain technique to render the html. How about a introduce a type, MediaType that looks something like this: public class MediaType { public static final String HTML = "text/html"; public static final String ANY = "*/*"; public static final String JSON = "application/json"; private final String mediaType; private final Class<? extends Responder> responderClass; private MediaType(final String mediaType, Class<? extends Responder> responderClass) { this.mediaType = mediaType; this.responderClass = responderClass; } public String getMediaType() { return mediaType; } public Class<? extends Responder> getResponderClass() { return responderClass; } @Override public String toString() { return "MediaType[type=" + mediaType + ", responderClass=" + responderClass + "]"; } public static MediaType html() { return new MediaType(HTML, HtmlViewResponder.class); } public static MediaType jsp() { return new MediaType(HTML, JspViewResponder.class); } public static MediaType json() { return new MediaType(JSON, JsonResponder.class); } } And we could add *html()*, *jsp()*, and *json()* methods to AbstractRoutingModule, so a route that should be handled by a HtmlViewResponder would look like this: route() .from("/plain") .on(RequestMethod.GET) .produces(html()) .to(Html.class).index(); To be backward compatible, if a *produces()* method was not specified it would be the same as specifying: .produces(json())