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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_REDUCE_ACCEPT_LANGUAGE_REDUCE_ACCEPT_LANGUAGE_THROTTLE_H_
#define CONTENT_BROWSER_REDUCE_ACCEPT_LANGUAGE_REDUCE_ACCEPT_LANGUAGE_THROTTLE_H_
#include "base/containers/flat_set.h"
#include "base/memory/raw_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/frame_tree_node_id.h"
#include "content/public/browser/reduce_accept_language_utils.h"
#include "net/http/http_request_headers.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
namespace content {
class OriginTrialsControllerDelegate;
class CONTENT_EXPORT ReduceAcceptLanguageThrottle
: public blink::URLLoaderThrottle {
public:
explicit ReduceAcceptLanguageThrottle(
ReduceAcceptLanguageUtils reduce_accept_language_utils,
OriginTrialsControllerDelegate* origin_trials_delegate,
FrameTreeNodeId frame_tree_node_id);
~ReduceAcceptLanguageThrottle() override;
// blink::URLLoaderThrottle
void WillStartRequest(network::ResourceRequest* request,
bool* defer) override;
void BeforeWillRedirectRequest(
net::RedirectInfo* redirect_info,
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset,
std::vector<std::string>* to_be_removed_request_headers,
net::HttpRequestHeaders* modified_request_headers,
net::HttpRequestHeaders* modified_cors_exempt_request_headers) override;
void BeforeWillProcessResponse(
const GURL& response_url,
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset) override;
private:
// Contains the logic for whether or not the navigation should restart, and
// persists the reduce accept-language if there is a restart.
void MaybeRestartWithLanguageNegotiation(
const network::mojom::URLResponseHead& response_head,
RestartWithURLReset* restart_with_url_reset);
// The utils to call reduce Accept-Language functions.
ReduceAcceptLanguageUtils reduce_accept_language_utils_;
// The delegate is owned by the BrowserContext, and both are expected to
// outlive this throttle.
raw_ptr<OriginTrialsControllerDelegate> origin_trials_delegate_;
FrameTreeNodeId frame_tree_node_id_;
// Ensure that there's only one restart per origin.
base::flat_set<url::Origin> restarted_origins_;
// URL of the last request made.
GURL last_request_url_;
// Headers from the initial request. This should include accept-language.
net::HttpRequestHeaders initial_request_headers_;
};
} // namespace content
#endif // CONTENT_BROWSER_REDUCE_ACCEPT_LANGUAGE_REDUCE_ACCEPT_LANGUAGE_THROTTLE_H_
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