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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_APPCACHE_APPCACHE_REQUEST_HANDLER_H_
#define WEBKIT_APPCACHE_APPCACHE_REQUEST_HANDLER_H_
#include "net/url_request/url_request.h"
#include "webkit/appcache/appcache_host.h"
class URLRequest;
class URLRequestJob;
namespace appcache {
// An instance is created for each URLRequest. The instance survives all
// http transactions involved in the processing of its URLRequest, and is
// given the opportunity to hijack the request along the way. Callers
// should use AppCacheHost::CreateRequestHandler to manufacture instances
// that can retrieve resources for a particular host.
class AppCacheRequestHandler : public URLRequest::UserData {
public:
// Should be called on each request intercept opportunity.
URLRequestJob* MaybeLoadResource(URLRequest* request);
URLRequestJob* MaybeLoadFallbackForRedirect(URLRequest* request,
const GURL& location);
URLRequestJob* MaybeLoadFallbackForResponse(URLRequest* request);
void GetExtraResponseInfo(int64* cache_id, GURL* manifest_url);
private:
friend class AppCacheHost;
// Ctor for main resource loads.
explicit AppCacheRequestHandler(AppCacheHost* host);
// Ctor for subresource loads when the cache is loaded.
explicit AppCacheRequestHandler(AppCache* cache);
// Main vs subresource loads are very different.
// TODO(michaeln): maybe have two derived classes?
bool is_main_request_;
int64 cache_id_;
scoped_refptr<AppCache> cache_;
base::WeakPtr<AppCacheHost> host_;
scoped_refptr<URLRequestJob> job_;
AppCacheService* service_;
};
} // namespace appcache
#endif // WEBKIT_APPCACHE_APPCACHE_REQUEST_HANDLER_H_
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