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// Copyright 2018 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_RENDERER_HOST_RENDER_FRAME_METADATA_PROVIDER_IMPL_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_FRAME_METADATA_PROVIDER_IMPL_H_
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "content/common/render_frame_metadata.mojom.h"
#include "content/public/browser/render_frame_metadata_provider.h"
#include "mojo/public/cpp/bindings/binding.h"
namespace content {
class FrameTokenMessageQueue;
// Observes RenderFrameMetadata associated with the submission of a frame for a
// given RenderWidgetHost. The renderer will notify this when sumitting a
// CompositorFrame.
//
// When ReportAllFrameSubmissionsForTesting(true) is called, this will be
// notified of all frame submissions.
//
// All RenderFrameMetadataProvider::Observer will be notified.
class CONTENT_EXPORT RenderFrameMetadataProviderImpl
: public RenderFrameMetadataProvider,
public mojom::RenderFrameMetadataObserverClient {
public:
RenderFrameMetadataProviderImpl(
scoped_refptr<base::SingleThreadTaskRunner> task_runner,
FrameTokenMessageQueue* frame_token_message_queue);
~RenderFrameMetadataProviderImpl() override;
void AddObserver(Observer* observer) override;
void RemoveObserver(Observer* observer) override;
void Bind(mojom::RenderFrameMetadataObserverClientRequest client_request,
mojom::RenderFrameMetadataObserverPtr observer);
// Notifies the renderer to begin sending a notification on all frame
// submissions.
void ReportAllFrameSubmissionsForTesting(bool enabled) override;
const cc::RenderFrameMetadata& LastRenderFrameMetadata() const override;
private:
friend class FakeRenderWidgetHostViewAura;
// Paired with the mojom::RenderFrameMetadataObserverClient overrides, these
// methods are enqueued in |frame_token_message_queue_|. They are invoked when
// the browser process receives their associated frame tokens. These then
// notify any |observers_|.
void OnRenderFrameMetadataChangedAfterActivation(
cc::RenderFrameMetadata metadata);
void OnFrameTokenFrameSubmissionForTesting();
// Set |last_render_frame_metadata_| to the given |metadata| for testing
// purpose.
void SetLastRenderFrameMetadataForTest(cc::RenderFrameMetadata metadata);
// mojom::RenderFrameMetadataObserverClient:
void OnRenderFrameMetadataChanged(
uint32_t frame_token,
const cc::RenderFrameMetadata& metadata) override;
void OnFrameSubmissionForTesting(uint32_t frame_token) override;
base::ObserverList<Observer>::Unchecked observers_;
cc::RenderFrameMetadata last_render_frame_metadata_;
base::Optional<viz::LocalSurfaceId> last_local_surface_id_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
// Not owned.
FrameTokenMessageQueue* const frame_token_message_queue_;
mojo::Binding<mojom::RenderFrameMetadataObserverClient>
render_frame_metadata_observer_client_binding_;
mojom::RenderFrameMetadataObserverPtr render_frame_metadata_observer_ptr_;
base::WeakPtrFactory<RenderFrameMetadataProviderImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(RenderFrameMetadataProviderImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_FRAME_METADATA_PROVIDER_IMPL_H_
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