| // Copyright 2018 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/core/layout/ng/custom/layout_worklet.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/frame/local_frame.h" |
| #include "third_party/blink/renderer/core/layout/ng/custom/document_layout_definition.h" |
| #include "third_party/blink/renderer/core/layout/ng/custom/layout_worklet_global_scope_proxy.h" |
| #include "third_party/blink/renderer/core/layout/ng/custom/pending_layout_registry.h" |
| |
| namespace blink { |
| |
| const size_t LayoutWorklet::kNumGlobalScopes = 2u; |
| DocumentLayoutDefinition* const kInvalidDocumentLayoutDefinition = nullptr; |
| |
| // static |
| LayoutWorklet* LayoutWorklet::From(LocalDOMWindow& window) { |
| LayoutWorklet* supplement = |
| Supplement<LocalDOMWindow>::From<LayoutWorklet>(window); |
| if (!supplement && window.GetFrame()) { |
| supplement = MakeGarbageCollected<LayoutWorklet>(window); |
| ProvideTo(window, supplement); |
| } |
| return supplement; |
| } |
| |
| LayoutWorklet::LayoutWorklet(LocalDOMWindow& window) |
| : Worklet(window), |
| Supplement<LocalDOMWindow>(window), |
| pending_layout_registry_(MakeGarbageCollected<PendingLayoutRegistry>()) {} |
| |
| LayoutWorklet::~LayoutWorklet() = default; |
| |
| const char LayoutWorklet::kSupplementName[] = "LayoutWorklet"; |
| |
| void LayoutWorklet::AddPendingLayout(const AtomicString& name, Node* node) { |
| pending_layout_registry_->AddPendingLayout(name, node); |
| } |
| |
| LayoutWorkletGlobalScopeProxy* LayoutWorklet::Proxy() { |
| return LayoutWorkletGlobalScopeProxy::From(FindAvailableGlobalScope()); |
| } |
| |
| void LayoutWorklet::Trace(Visitor* visitor) const { |
| visitor->Trace(document_definition_map_); |
| visitor->Trace(pending_layout_registry_); |
| Worklet::Trace(visitor); |
| Supplement<LocalDOMWindow>::Trace(visitor); |
| } |
| |
| bool LayoutWorklet::NeedsToCreateGlobalScope() { |
| return GetNumberOfGlobalScopes() < kNumGlobalScopes; |
| } |
| |
| WorkletGlobalScopeProxy* LayoutWorklet::CreateGlobalScope() { |
| DCHECK(NeedsToCreateGlobalScope()); |
| return MakeGarbageCollected<LayoutWorkletGlobalScopeProxy>( |
| To<LocalDOMWindow>(GetExecutionContext())->GetFrame(), |
| ModuleResponsesMap(), pending_layout_registry_, |
| GetNumberOfGlobalScopes() + 1); |
| } |
| |
| } // namespace blink |