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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.
#include "third_party/blink/renderer/modules/animationworklet/animation_worklet_global_scope.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_object_parser.h"
#include "third_party/blink/renderer/bindings/core/v8/worker_or_worklet_script_controller.h"
#include "third_party/blink/renderer/core/workers/global_scope_creation_params.h"
#include "third_party/blink/renderer/core/workers/worker_thread.h"
#include "third_party/blink/renderer/modules/animationworklet/animation_worklet_proxy_client.h"
#include "third_party/blink/renderer/modules/animationworklet/worklet_animation_options.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding_macros.h"
#include "third_party/blink/renderer/platform/bindings/v8_object_constructor.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
namespace blink {
namespace {
void UpdateAnimation(Animator* animator,
ScriptState* script_state,
WorkletAnimationId id,
double current_time,
AnimationWorkletDispatcherOutput* result) {
AnimationWorkletDispatcherOutput::AnimationState animation_output(
id, base::nullopt);
if (animator->Animate(script_state, current_time, &animation_output)) {
result->animations.push_back(std::move(animation_output));
}
}
} // namespace
AnimationWorkletGlobalScope* AnimationWorkletGlobalScope::Create(
std::unique_ptr<GlobalScopeCreationParams> creation_params,
WorkerThread* thread) {
return new AnimationWorkletGlobalScope(std::move(creation_params), thread);
}
AnimationWorkletGlobalScope::AnimationWorkletGlobalScope(
std::unique_ptr<GlobalScopeCreationParams> creation_params,
WorkerThread* thread)
: WorkletGlobalScope(std::move(creation_params),
thread->GetWorkerReportingProxy(),
thread) {}
AnimationWorkletGlobalScope::~AnimationWorkletGlobalScope() = default;
void AnimationWorkletGlobalScope::Trace(blink::Visitor* visitor) {
visitor->Trace(animator_definitions_);
visitor->Trace(animators_);
WorkletGlobalScope::Trace(visitor);
}
void AnimationWorkletGlobalScope::Dispose() {
DCHECK(IsContextThread());
if (AnimationWorkletProxyClient* proxy_client =
AnimationWorkletProxyClient::From(Clients()))
proxy_client->Dispose();
WorkletGlobalScope::Dispose();
}
Animator* AnimationWorkletGlobalScope::CreateAnimatorFor(
int animation_id,
const String& name,
WorkletAnimationOptions* options) {
DCHECK(!animators_.at(animation_id));
Animator* animator = CreateInstance(name, options);
if (!animator)
return nullptr;
animators_.Set(animation_id, animator);
return animator;
}
std::unique_ptr<AnimationWorkletOutput> AnimationWorkletGlobalScope::Mutate(
const AnimationWorkletInput& mutator_input) {
DCHECK(IsContextThread());
ScriptState* script_state = ScriptController()->GetScriptState();
ScriptState::Scope scope(script_state);
std::unique_ptr<AnimationWorkletOutput> result =
std::make_unique<AnimationWorkletOutput>();
for (const auto& worklet_animation_id : mutator_input.removed_animations)
animators_.erase(worklet_animation_id.animation_id);
for (const auto& animation : mutator_input.added_and_updated_animations) {
int id = animation.worklet_animation_id.animation_id;
DCHECK(!animators_.Contains(id));
const String name =
String::FromUTF8(animation.name.data(), animation.name.size());
// Down casting to blink type to access the serialized value.
WorkletAnimationOptions* options =
static_cast<WorkletAnimationOptions*>(animation.options.get());
Animator* animator = CreateAnimatorFor(id, name, options);
if (!animator)
continue;
UpdateAnimation(animator, script_state, animation.worklet_animation_id,
animation.current_time, result.get());
}
for (const auto& animation : mutator_input.updated_animations) {
int id = animation.worklet_animation_id.animation_id;
Animator* animator = animators_.at(id);
// We don't try to create an animator if there isn't any.
if (!animator)
continue;
UpdateAnimation(animator, script_state, animation.worklet_animation_id,
animation.current_time, result.get());
}
for (const auto& worklet_animation_id : mutator_input.peeked_animations) {
int id = worklet_animation_id.animation_id;
Animator* animator = animators_.at(id);
result->animations.emplace_back(
worklet_animation_id,
animator ? animator->GetLastLocalTime() : base::nullopt);
}
return result;
}
void AnimationWorkletGlobalScope::RegisterWithProxyClientIfNeeded() {
if (registered_)
return;
if (AnimationWorkletProxyClient* proxy_client =
AnimationWorkletProxyClient::From(Clients())) {
proxy_client->SetGlobalScope(this);
registered_ = true;
}
}
void AnimationWorkletGlobalScope::registerAnimator(
const String& name,
const ScriptValue& constructor_value,
ExceptionState& exception_state) {
RegisterWithProxyClientIfNeeded();
DCHECK(IsContextThread());
if (animator_definitions_.Contains(name)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNotSupportedError,
"A class with name:'" + name + "' is already registered.");
return;
}
if (name.IsEmpty()) {
exception_state.ThrowTypeError("The empty string is not a valid name.");
return;
}
v8::Isolate* isolate = ScriptController()->GetScriptState()->GetIsolate();
v8::Local<v8::Context> context = ScriptController()->GetContext();
DCHECK(constructor_value.V8Value()->IsFunction());
v8::Local<v8::Function> constructor =
v8::Local<v8::Function>::Cast(constructor_value.V8Value());
v8::Local<v8::Object> prototype;
if (!V8ObjectParser::ParsePrototype(context, constructor, &prototype,
&exception_state))
return;
v8::Local<v8::Function> animate;
if (!V8ObjectParser::ParseFunction(context, prototype, "animate", &animate,
&exception_state))
return;
AnimatorDefinition* definition =
new AnimatorDefinition(isolate, constructor, animate);
animator_definitions_.Set(name, definition);
}
Animator* AnimationWorkletGlobalScope::CreateInstance(
const String& name,
WorkletAnimationOptions* options) {
DCHECK(IsContextThread());
AnimatorDefinition* definition = animator_definitions_.at(name);
if (!definition)
return nullptr;
v8::Isolate* isolate = ScriptController()->GetScriptState()->GetIsolate();
v8::Local<v8::Function> constructor = definition->ConstructorLocal(isolate);
DCHECK(!IsUndefinedOrNull(constructor));
v8::Local<v8::Value> value;
if (options && options->GetData())
value = options->GetData()->Deserialize(isolate);
v8::Local<v8::Value> instance;
if (!V8ScriptRunner::CallAsConstructor(
isolate, constructor,
ExecutionContext::From(ScriptController()->GetScriptState()),
!value.IsEmpty() ? 1 : 0, &value)
.ToLocal(&instance))
return nullptr;
return new Animator(isolate, definition, instance);
}
AnimatorDefinition* AnimationWorkletGlobalScope::FindDefinitionForTest(
const String& name) {
return animator_definitions_.at(name);
}
} // namespace blink
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