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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_PRERENDER_PRERENDER_PROCESSOR_H_
#define CONTENT_BROWSER_PRERENDER_PRERENDER_PROCESSOR_H_
#include <memory>
#include "content/browser/prerender/prerender_host_registry.h"
#include "content/common/content_export.h"
#include "content/public/browser/global_routing_id.h"
#include "third_party/blink/public/mojom/prerender/prerender.mojom.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace content {
class RenderFrameHostImpl;
// Prerender2:
// PrerenderProcessor implements blink::mojom::PrerenderProcessor and works as
// the browser-side entry point of prerendering. This is created per prerender
// request (see comments on the mojom interface for details) and owned by the
// initiator RenderFrameHostImpl's mojo::UniqueReceiverSet.
//
// When Start() is called from a renderer process, this instantiates a new
// PrerenderHost, and forwards the request to the prerender host.
class CONTENT_EXPORT PrerenderProcessor final
: public blink::mojom::PrerenderProcessor {
public:
explicit PrerenderProcessor(RenderFrameHostImpl& initiator_render_frame_host);
~PrerenderProcessor() override;
PrerenderProcessor(const PrerenderProcessor&) = delete;
PrerenderProcessor& operator=(const PrerenderProcessor&) = delete;
PrerenderProcessor(PrerenderProcessor&&) = delete;
PrerenderProcessor& operator=(PrerenderProcessor&&) = delete;
// blink::mojom::PrerenderProcessor implementation:
void Start(blink::mojom::PrerenderAttributesPtr attributes,
mojo::PendingRemote<blink::mojom::PrerenderProcessorClient>
pending_remote) override;
void Cancel() override;
private:
void CancelPrerendering();
PrerenderHostRegistry& GetPrerenderHostRegistry();
// The initiator render frame host owns `this`, so the reference is safe.
RenderFrameHostImpl& initiator_render_frame_host_;
// The origin of the initiator render frame host. This could be different from
// `initiator_render_frame_host_.GetLastCommittedOrigin()` because the frame
// may navigate away before Start() is called from a renderer process.
const url::Origin initiator_origin_;
// URL to be prerendered.
GURL prerendering_url_;
enum class State { kInitial, kStarted, kCancelled };
State state_ = State::kInitial;
};
} // namespace content
#endif // CONTENT_BROWSER_PRERENDER_PRERENDER_PROCESSOR_H_
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