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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATOR_DEFINITION_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATOR_DEFINITION_H_
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/name_client.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
namespace blink {
class V8AnimateCallback;
class V8AnimatorConstructor;
class V8StateCallback;
// Represents a valid registered Javascript animator. In particular it owns two
// |v8::Function|s that are the "constructor" and "animate" functions of the
// registered class. It does not do any validation itself and relies on
// |AnimationWorkletGlobalScope::registerAnimator| to validate the provided
// Javascript class before completing the registration.
class MODULES_EXPORT AnimatorDefinition final
: public GarbageCollected<AnimatorDefinition>,
public NameClient {
public:
explicit AnimatorDefinition(V8AnimatorConstructor* constructor,
V8AnimateCallback* animate,
V8StateCallback* state);
~AnimatorDefinition() override = default;
void Trace(Visitor* visitor) const;
const char* NameInHeapSnapshot() const override {
return "AnimatorDefinition";
}
V8AnimatorConstructor* ConstructorFunction() const {
return constructor_.Get();
}
V8AnimateCallback* AnimateFunction() const { return animate_.Get(); }
V8StateCallback* StateFunction() const { return state_.Get(); }
bool IsStateful() const { return state_ != nullptr; }
private:
// This object keeps the constructor function, animate, and state function
// alive. It participates in wrapper tracing as it holds onto V8 wrappers.
Member<V8AnimatorConstructor> constructor_;
Member<V8AnimateCallback> animate_;
Member<V8StateCallback> state_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATOR_DEFINITION_H_
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