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// Copyright 2015 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/presentation/presentation_receiver.h"
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/public/platform/browser_interface_broker_proxy.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/modules/presentation/presentation_connection.h"
#include "third_party/blink/renderer/modules/presentation/presentation_connection_list.h"
namespace blink {
PresentationReceiver::PresentationReceiver(LocalDOMWindow* window)
: connection_list_(
MakeGarbageCollected<PresentationConnectionList>(window)),
presentation_receiver_receiver_(this, window),
presentation_service_remote_(window),
window_(window) {
DCHECK(window_->GetFrame()->IsOutermostMainFrame());
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
window->GetTaskRunner(TaskType::kPresentation);
window->GetBrowserInterfaceBroker().GetInterface(
presentation_service_remote_.BindNewPipeAndPassReceiver(task_runner));
// Set the mojo::Remote<T> that remote implementation of PresentationService
// will use to interact with the associated PresentationReceiver, in order
// to receive updates on new connections becoming available.
presentation_service_remote_->SetReceiver(
presentation_receiver_receiver_.BindNewPipeAndPassRemote(task_runner));
}
ScriptPromise<PresentationConnectionList> PresentationReceiver::connectionList(
ScriptState* script_state) {
if (!connection_list_property_) {
connection_list_property_ = MakeGarbageCollected<ConnectionListProperty>(
ExecutionContext::From(script_state));
}
if (!connection_list_->IsEmpty() &&
connection_list_property_->GetState() == ConnectionListProperty::kPending)
connection_list_property_->Resolve(connection_list_);
return connection_list_property_->Promise(script_state->World());
}
void PresentationReceiver::Terminate() {
if (window_ && !window_->closed())
window_->Close(window_.Get());
}
void PresentationReceiver::RemoveConnection(
ReceiverPresentationConnection* connection) {
DCHECK(connection_list_);
connection_list_->RemoveConnection(connection);
}
void PresentationReceiver::OnReceiverConnectionAvailable(
mojom::blink::PresentationConnectionResultPtr result) {
// Take() will call PresentationReceiver::registerConnection()
// and register the connection.
auto* connection = ReceiverPresentationConnection::Create(
this, *result->presentation_info, std::move(result->connection_remote),
std::move(result->connection_receiver));
// Only notify receiver.connectionList property if it has been acccessed
// previously.
if (!connection_list_property_)
return;
if (connection_list_property_->GetState() ==
ConnectionListProperty::kPending) {
connection_list_property_->Resolve(connection_list_);
} else if (connection_list_property_->GetState() ==
ConnectionListProperty::kResolved) {
connection_list_->DispatchConnectionAvailableEvent(connection);
}
}
void PresentationReceiver::RegisterConnection(
ReceiverPresentationConnection* connection) {
DCHECK(connection_list_);
connection_list_->AddConnection(connection);
}
void PresentationReceiver::Trace(Visitor* visitor) const {
visitor->Trace(connection_list_);
visitor->Trace(connection_list_property_);
visitor->Trace(presentation_receiver_receiver_);
visitor->Trace(presentation_service_remote_);
visitor->Trace(window_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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