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// Copyright 2016 The Chromium Authors
// 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.h"
#include "base/atomic_sequence_num.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/page/chrome_client.h"
#include "third_party/blink/renderer/core/workers/worker_clients.h"
#include "third_party/blink/renderer/modules/animationworklet/animation_worklet_messaging_proxy.h"
#include "third_party/blink/renderer/modules/animationworklet/animation_worklet_proxy_client.h"
base::AtomicSequenceNumber g_next_worklet_id;
int NextId() {
// Start id from 1. This way it safe to use it as key in hashmap with default
// key traits.
return g_next_worklet_id.GetNext() + 1;
}
namespace blink {
AnimationWorklet::AnimationWorklet(LocalDOMWindow& window)
: Worklet(window), worklet_id_(NextId()), last_animation_id_(0) {}
AnimationWorklet::~AnimationWorklet() = default;
bool AnimationWorklet::NeedsToCreateGlobalScope() {
return GetNumberOfGlobalScopes() <
static_cast<wtf_size_t>(
AnimationWorkletProxyClient::kNumStatelessGlobalScopes);
}
WorkletGlobalScopeProxy* AnimationWorklet::CreateGlobalScope() {
DCHECK(NeedsToCreateGlobalScope());
if (!proxy_client_) {
// TODO(kevers|majidvp): Consider refactoring so that proxy client
// initialization can move to the constructor. Currently, initialization
// in the constructor leads to test failures as the document frame has not
// been initialized at the time of the constructor call.
Document* document = To<LocalDOMWindow>(GetExecutionContext())->document();
proxy_client_ =
AnimationWorkletProxyClient::FromDocument(document, worklet_id_);
}
auto* worker_clients = MakeGarbageCollected<WorkerClients>();
ProvideAnimationWorkletProxyClientTo(worker_clients, proxy_client_);
AnimationWorkletMessagingProxy* proxy =
MakeGarbageCollected<AnimationWorkletMessagingProxy>(
GetExecutionContext());
proxy->Initialize(worker_clients, ModuleResponsesMap());
return proxy;
}
WorkletAnimationId AnimationWorklet::NextWorkletAnimationId() {
// Id starts from 1. This way it safe to use it as key in hashmap with default
// key traits.
return WorkletAnimationId(worklet_id_, ++last_animation_id_);
}
void AnimationWorklet::Trace(Visitor* visitor) const {
Worklet::Trace(visitor);
visitor->Trace(proxy_client_);
}
} // namespace blink
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