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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 COMPONENTS_CAST_RECEIVER_RENDERER_WRAPPING_URL_LOADER_THROTTLE_PROVIDER_H_
#define COMPONENTS_CAST_RECEIVER_RENDERER_WRAPPING_URL_LOADER_THROTTLE_PROVIDER_H_
#include <memory>
#include <string_view>
#include <vector>
#include "base/containers/flat_map.h"
#include "base/functional/callback_forward.h"
#include "base/memory/raw_ref.h"
#include "base/sequence_checker.h"
#include "third_party/blink/public/platform/url_loader_throttle_provider.h"
namespace network {
struct ResourceRequest;
}
namespace cast_receiver {
class UrlRewriteRulesProvider;
class WrappingURLLoaderThrottleProvider
: public blink::URLLoaderThrottleProvider {
public:
// Provides callbacks needed for an instance of this class to function.
class Client {
public:
virtual ~Client();
// Returns the UrlRewriteRulesProvider associated with RenderFrame with id
// `frame_token`, or nullptr if no such provider exists.
virtual UrlRewriteRulesProvider* GetUrlRewriteRulesProvider(
const blink::LocalFrameToken& frame_token) = 0;
// Returns whether |header| is a cors exempt header.
virtual bool IsCorsExemptHeader(std::string_view header) = 0;
};
// |client| is expected to outlive this instance.
//
// Creating an instance of this class without a |wrapped_provider| results in
// CreateThrottles() returning url_rewrite::URLLoaderThrottle instances but
// no other URLLoaderThrottle instances.
WrappingURLLoaderThrottleProvider(
std::unique_ptr<blink::URLLoaderThrottleProvider> wrapped_provider,
Client& client);
explicit WrappingURLLoaderThrottleProvider(Client& client);
~WrappingURLLoaderThrottleProvider() override;
WrappingURLLoaderThrottleProvider(const WrappingURLLoaderThrottleProvider&) =
delete;
WrappingURLLoaderThrottleProvider& operator=(
const WrappingURLLoaderThrottleProvider&) = delete;
// blink::URLLoaderThrottleProvider implementation.
std::unique_ptr<blink::URLLoaderThrottleProvider> Clone() override;
std::vector<std::unique_ptr<blink::URLLoaderThrottle>> CreateThrottles(
base::optional_ref<const blink::LocalFrameToken> local_frame_token,
const network::ResourceRequest& request) override;
void SetOnline(bool is_online) override;
private:
raw_ref<Client> client_;
std::unique_ptr<blink::URLLoaderThrottleProvider> wrapped_provider_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace cast_receiver
#endif // COMPONENTS_CAST_RECEIVER_RENDERER_WRAPPING_URL_LOADER_THROTTLE_PROVIDER_H_
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