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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 CONTENT_BROWSER_RENDERER_HOST_THROTTLING_RESOURCE_HANDLER_H_
#define CONTENT_BROWSER_RENDERER_HOST_THROTTLING_RESOURCE_HANDLER_H_
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_vector.h"
#include "content/browser/renderer_host/layered_resource_handler.h"
#include "content/public/browser/resource_controller.h"
#include "googleurl/src/gurl.h"
namespace content {
class ResourceThrottle;
struct ResourceResponse;
// Used to apply a list of ResourceThrottle instances to an URLRequest.
class ThrottlingResourceHandler : public LayeredResourceHandler,
public ResourceController {
public:
// Takes ownership of the ResourceThrottle instances.
ThrottlingResourceHandler(scoped_ptr<ResourceHandler> next_handler,
int child_id,
int request_id,
ScopedVector<ResourceThrottle> throttles);
virtual ~ThrottlingResourceHandler();
// LayeredResourceHandler overrides:
virtual bool OnRequestRedirected(int request_id, const GURL& url,
ResourceResponse* response,
bool* defer) OVERRIDE;
virtual bool OnResponseStarted(int request_id,
ResourceResponse* response,
bool* defer) OVERRIDE;
virtual bool OnWillStart(int request_id, const GURL& url,
bool* defer) OVERRIDE;
// ResourceThrottleController implementation:
virtual void Cancel() OVERRIDE;
virtual void CancelAndIgnore() OVERRIDE;
virtual void CancelWithError(int error_code) OVERRIDE;
virtual void Resume() OVERRIDE;
private:
void ResumeStart();
void ResumeRedirect();
void ResumeResponse();
enum DeferredStage {
DEFERRED_NONE,
DEFERRED_START,
DEFERRED_REDIRECT,
DEFERRED_RESPONSE
};
DeferredStage deferred_stage_;
int request_id_;
ScopedVector<ResourceThrottle> throttles_;
size_t index_;
GURL deferred_url_;
scoped_refptr<ResourceResponse> deferred_response_;
bool cancelled_by_resource_throttle_;
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_THROTTLING_RESOURCE_HANDLER_H_
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