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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 CHROME_BROWSER_FIRST_PARTY_SETS_FIRST_PARTY_SETS_NAVIGATION_THROTTLE_H_
#define CHROME_BROWSER_FIRST_PARTY_SETS_FIRST_PARTY_SETS_NAVIGATION_THROTTLE_H_
#include <memory>
#include <optional>
#include "base/memory/raw_ref.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/thread_annotations.h"
#include "base/timer/elapsed_timer.h"
#include "base/timer/timer.h"
#include "content/public/browser/navigation_throttle.h"
namespace first_party_sets {
class FirstPartySetsPolicyService;
// Observes navigations and defers navigations of outermost frames on
// First-Party Sets initialization during startup.
class FirstPartySetsNavigationThrottle : public content::NavigationThrottle {
public:
explicit FirstPartySetsNavigationThrottle(
content::NavigationThrottleRegistry& registry,
FirstPartySetsPolicyService& service);
~FirstPartySetsNavigationThrottle() override;
// content::NavigationThrottle:
ThrottleCheckResult WillStartRequest() override;
const char* GetNameForLogging() override;
void Resume() override;
// Only create throttle for the regular profile if FPS initialization has not
// completed and FPS clearing is enabled and this is the outermost frame
// navigation; returns nullptr otherwise.
static void MaybeCreateAndAdd(content::NavigationThrottleRegistry& registry);
base::OneShotTimer& GetTimerForTesting() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return resume_navigation_timer_;
}
private:
// Resume the navigation.
void OnTimeOut();
// Stop `resume_navigation_timer_` and resume the navigation.
void OnReadyToResume();
raw_ref<FirstPartySetsPolicyService> service_
GUARDED_BY_CONTEXT(sequence_checker_);
// The timer used to resume the navigation on timeout.
base::OneShotTimer resume_navigation_timer_
GUARDED_BY_CONTEXT(sequence_checker_);
// Timer starting when a navigation gets deferred.
std::optional<base::ElapsedTimer> throttle_navigation_timer_
GUARDED_BY_CONTEXT(sequence_checker_);
// Stores the state of whether the navigation has been resumed, to make sure
// the navigation is only resumed once.
bool resumed_ GUARDED_BY_CONTEXT(sequence_checker_) = false;
SEQUENCE_CHECKER(sequence_checker_);
base::WeakPtrFactory<FirstPartySetsNavigationThrottle> weak_factory_
GUARDED_BY_CONTEXT(sequence_checker_){this};
};
} // namespace first_party_sets
#endif // CHROME_BROWSER_FIRST_PARTY_SETS_FIRST_PARTY_SETS_NAVIGATION_THROTTLE_H_
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