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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_ANIMATION_ANIMATION_DELEGATE_VIEWS_H_
#define UI_VIEWS_ANIMATION_ANIMATION_DELEGATE_VIEWS_H_
#include "base/location.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "ui/gfx/animation/animation_container_observer.h"
#include "ui/gfx/animation/animation_delegate.h"
#include "ui/views/view.h"
#include "ui/views/view_observer.h"
#include "ui/views/views_export.h"
namespace views {
class CompositorAnimationRunner;
// Provides default implementation to adapt CompositorAnimationRunner for
// Animation. Falls back to the default animation runner when |view| is nullptr.
class VIEWS_EXPORT AnimationDelegateViews
: public gfx::AnimationDelegate,
public ViewObserver,
public gfx::AnimationContainerObserver {
public:
explicit AnimationDelegateViews(View* view,
const base::Location& location = FROM_HERE);
~AnimationDelegateViews() override;
// gfx::AnimationDelegate:
void AnimationContainerWasSet(gfx::AnimationContainer* container) override;
// ViewObserver:
void OnViewAddedToWidget(View* observed_view) final;
void OnViewRemovedFromWidget(View* observed_view) final;
void OnViewIsDeleting(View* observed_view) final;
// gfx::AnimationContainerObserver:
void AnimationContainerProgressed(
gfx::AnimationContainer* container) override {}
void AnimationContainerEmpty(gfx::AnimationContainer* container) override {}
void AnimationContainerShuttingDown(
gfx::AnimationContainer* container) override;
// Returns the expected animation duration for metrics reporting purposes.
// Should be overriden to provide a non-zero value and used with
// |set_animation_metrics_reporter()|.
virtual base::TimeDelta GetAnimationDurationForReporting() const;
gfx::AnimationContainer* container() { return container_; }
const base::Location& location_for_test() const { return location_; }
private:
// Sets CompositorAnimationRunner to |container_| if possible. Otherwise,
// clears AnimationRunner of |container_|.
void UpdateAnimationRunner(const base::Location& location);
void ClearAnimationRunner();
raw_ptr<View> view_;
raw_ptr<gfx::AnimationContainer> container_ = nullptr;
// Code location of where this is created.
const base::Location location_;
// The animation runner that |container_| uses.
raw_ptr<CompositorAnimationRunner> compositor_animation_runner_ = nullptr;
base::ScopedObservation<View, ViewObserver> scoped_observation_{this};
};
} // namespace views
#endif // UI_VIEWS_ANIMATION_ANIMATION_DELEGATE_VIEWS_H_
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