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// Copyright 2016 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 THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATION_WORKLET_GLOBAL_SCOPE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATION_WORKLET_GLOBAL_SCOPE_H_
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/core/workers/worklet_global_scope.h"
#include "third_party/blink/renderer/modules/animationworklet/animator.h"
#include "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/script_wrappable.h"
#include "third_party/blink/renderer/platform/graphics/animation_worklet_mutators_state.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace blink {
class ExceptionState;
class WorkletAnimationOptions;
// Represents the animation worklet global scope and implements all methods that
// the global scope exposes to user script (See
// |AnimationWorkletGlobalScope.idl|). The instances of this class live on the
// worklet thread but have a corresponding proxy on the main thread which is
// accessed by the animation worklet instance. User scripts can register
// animator definitions with the global scope (via |registerAnimator| method).
// The scope keeps a map of these animator definitions and can look them up
// based on their name. The scope also owns a list of active animators that it
// animates.
class MODULES_EXPORT AnimationWorkletGlobalScope : public WorkletGlobalScope {
DEFINE_WRAPPERTYPEINFO();
public:
static AnimationWorkletGlobalScope* Create(
std::unique_ptr<GlobalScopeCreationParams>,
WorkerThread*);
~AnimationWorkletGlobalScope() override;
void Trace(blink::Visitor*) override;
void Dispose() override;
bool IsAnimationWorkletGlobalScope() const final { return true; }
// Invokes the |animate| function of all of its active animators.
std::unique_ptr<AnimationWorkletOutput> Mutate(const AnimationWorkletInput&);
// Registers a animator definition with the given name and constructor.
void registerAnimator(const String& name,
const ScriptValue& constructor_value,
ExceptionState&);
AnimatorDefinition* FindDefinitionForTest(const String& name);
unsigned GetAnimatorsSizeForTest() { return animators_.size(); }
private:
AnimationWorkletGlobalScope(std::unique_ptr<GlobalScopeCreationParams>,
WorkerThread*);
void RegisterWithProxyClientIfNeeded();
Animator* CreateInstance(const String& name,
WorkletAnimationOptions* options,
int num_effects);
Animator* CreateAnimatorFor(int animation_id,
const String& name,
WorkletAnimationOptions* options,
int num_effects);
typedef HeapHashMap<String, TraceWrapperMember<AnimatorDefinition>>
DefinitionMap;
DefinitionMap animator_definitions_;
typedef HeapHashMap<int, TraceWrapperMember<Animator>> AnimatorMap;
AnimatorMap animators_;
bool registered_ = false;
};
template <>
struct DowncastTraits<AnimationWorkletGlobalScope> {
static bool AllowFrom(const ExecutionContext& context) {
return context.IsAnimationWorkletGlobalScope();
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_ANIMATIONWORKLET_ANIMATION_WORKLET_GLOBAL_SCOPE_H_
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