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// Copyright 2021 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_PRELOADING_PRERENDER_PRERENDER_NAVIGATION_THROTTLE_H_
#define CONTENT_BROWSER_PRELOADING_PRERENDER_PRERENDER_NAVIGATION_THROTTLE_H_
#include "content/public/browser/navigation_throttle.h"
namespace content {
class NavigationRequest;
class PrerenderHost;
enum class PrerenderFinalStatus;
// PrerenderNavigationThrottle applies restrictions to prerendering navigation
// on the main frame. Specifically this cancels prerendering in the following
// cases.
//
// - Cross-origin prerendering
// - Cross-origin redirection during prerendering
// - Cross-origin navigation from a prerendered page
class PrerenderNavigationThrottle : public NavigationThrottle {
public:
~PrerenderNavigationThrottle() override;
static std::unique_ptr<PrerenderNavigationThrottle> MaybeCreateThrottleFor(
NavigationHandle* navigation_handle);
// NavigationThrottle
const char* GetNameForLogging() override;
ThrottleCheckResult WillStartRequest() override;
ThrottleCheckResult WillRedirectRequest() override;
ThrottleCheckResult WillProcessResponse() override;
private:
explicit PrerenderNavigationThrottle(NavigationRequest* navigation_request);
ThrottleCheckResult WillStartOrRedirectRequest(bool is_redirection);
// Returns true if this throttle is for prerender initial navigation.
bool IsInitialNavigation() const;
// Cancels prerendering hosting this navigation with `final_status`.
void CancelPrerendering(PrerenderFinalStatus final_status);
// Raw ptr should be safe as `prerender_host_` indirectly owns `this`.
const raw_ptr<PrerenderHost> prerender_host_ = nullptr;
bool is_same_site_cross_origin_prerender_ = false;
bool same_site_cross_origin_prerender_did_redirect_ = false;
};
} // namespace content
#endif // CONTENT_BROWSER_PRELOADING_PRERENDER_PRERENDER_NAVIGATION_THROTTLE_H_
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