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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.
#include "third_party/blink/renderer/modules/document_metadata/document_metadata_server.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/modules/document_metadata/document_metadata_extractor.h"
namespace blink {
// static
const char DocumentMetadataServer::kSupplementName[] = "DocumentMetadataServer";
// static
DocumentMetadataServer* DocumentMetadataServer::From(Document& document) {
return Supplement<Document>::From<DocumentMetadataServer>(document);
}
// static
void DocumentMetadataServer::BindReceiver(
LocalFrame* frame,
mojo::PendingReceiver<mojom::blink::DocumentMetadata> receiver) {
DCHECK(frame && frame->GetDocument());
auto& document = *frame->GetDocument();
auto* server = DocumentMetadataServer::From(document);
if (!server) {
server = MakeGarbageCollected<DocumentMetadataServer>(
base::PassKey<DocumentMetadataServer>(), *frame);
Supplement<Document>::ProvideTo(document, server);
}
server->Bind(std::move(receiver));
}
DocumentMetadataServer::DocumentMetadataServer(
base::PassKey<DocumentMetadataServer>,
LocalFrame& frame)
: Supplement<Document>(*frame.GetDocument()),
receiver_(this, frame.DomWindow()) {}
void DocumentMetadataServer::Bind(
mojo::PendingReceiver<mojom::blink::DocumentMetadata> receiver) {
// We expect the interface to be bound at most once when the page is loaded
// to service the GetEntities() call.
receiver_.reset();
// See https://bit.ly/2S0zRAS for task types.
receiver_.Bind(std::move(receiver), GetSupplementable()->GetTaskRunner(
TaskType::kMiscPlatformAPI));
}
void DocumentMetadataServer::Trace(Visitor* visitor) const {
visitor->Trace(receiver_);
Supplement<Document>::Trace(visitor);
}
void DocumentMetadataServer::GetEntities(GetEntitiesCallback callback) {
std::move(callback).Run(
DocumentMetadataExtractor::Extract(*GetSupplementable()));
}
} // namespace blink
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