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// Copyright (c) 2012 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 CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_
#define CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_
#include "base/basictypes.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/predictors/resource_prefetch_predictor.h"
#include "webkit/glue/resource_type.h"
namespace net {
class URLRequest;
}
class GURL;
namespace chrome_browser_net {
// Observes resource requests in the ResourceDispatcherHostDelegate and notifies
// the ResourcePrefetchPredictor about the ones it is interested in.
// - Has an instance per profile, and is owned by the corresponding
// ProfileIOData.
// - Needs to be constructed on UI thread. Rest of the functions can only be
// called on the IO thread. Can be destroyed on UI or IO thread.
class ResourcePrefetchPredictorObserver {
public:
explicit ResourcePrefetchPredictorObserver(
predictors::ResourcePrefetchPredictor* predictor);
~ResourcePrefetchPredictorObserver();
// Parts of the ResourceDispatcherHostDelegate that we want to observe.
void OnRequestStarted(net::URLRequest* request,
ResourceType::Type resource_type,
int child_id,
int route_id);
void OnRequestRedirected(const GURL& redirect_url, net::URLRequest* request);
void OnResponseStarted(net::URLRequest* request);
private:
// Owned by profile.
base::WeakPtr<predictors::ResourcePrefetchPredictor> predictor_;
DISALLOW_COPY_AND_ASSIGN(ResourcePrefetchPredictorObserver);
};
} // namespace chrome_browser_net
#endif // CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_
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