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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_PRELOADING_PREFETCHER_H_
#define CONTENT_BROWSER_PRELOADING_PREFETCHER_H_
#include "content/public/browser/speculation_host_delegate.h"
#include "services/network/public/mojom/devtools_observer.mojom-forward.h"
namespace content {
class RenderFrameHost;
class RenderFrameHostImpl;
class PreloadingPredictor;
// Handles speculation-rules bases prefetches.
class CONTENT_EXPORT Prefetcher {
public:
Prefetcher() = delete;
explicit Prefetcher(RenderFrameHost& render_frame_host);
~Prefetcher();
RenderFrameHost& render_frame_host() const { return *render_frame_host_; }
RenderFrameHostImpl* render_frame_host_impl() const {
return render_frame_host_impl_;
}
void ProcessCandidatesForPrefetch(
std::vector<blink::mojom::SpeculationCandidatePtr>& candidates);
bool MaybePrefetch(blink::mojom::SpeculationCandidatePtr candidate,
const PreloadingPredictor& enacting_predictor);
// Whether the prefetch attempt for target |url| failed or discarded.
bool IsPrefetchAttemptFailedOrDiscarded(const GURL& url);
private:
// content::PreloadingDecider, which inherits content::DocumentUserData, owns
// `this`, so `this` can access `render_frame_host_` safely.
const raw_ref<content::RenderFrameHost> render_frame_host_;
// content::PreloadingDecider, which inherits content::DocumentUserData, owns
// `this`, so `this` can access `render_frame_host_impl_` safely.
const raw_ptr<content::RenderFrameHostImpl> render_frame_host_impl_;
std::unique_ptr<SpeculationHostDelegate> delegate_;
base::WeakPtrFactory<Prefetcher> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_PRELOADING_PREFETCHER_H_
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