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// Copyright 2019 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/html/portal/portal_activate_event.h"
#include <utility>
#include "third_party/blink/public/mojom/portal/portal.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_portal_activate_event_init.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/event_type_names.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/html/portal/html_portal_element.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_per_isolate_data.h"
namespace blink {
PortalActivateEvent* PortalActivateEvent::Create(
LocalFrame* frame,
const base::UnguessableToken& predecessor_portal_token,
mojo::PendingAssociatedRemote<mojom::blink::Portal> predecessor_portal,
mojo::PendingAssociatedReceiver<mojom::blink::PortalClient>
predecessor_portal_client_receiver,
scoped_refptr<SerializedScriptValue> data,
MessagePortArray* ports,
OnPortalActivatedCallback callback) {
return MakeGarbageCollected<PortalActivateEvent>(
frame->GetDocument(), predecessor_portal_token,
std::move(predecessor_portal),
std::move(predecessor_portal_client_receiver),
SerializedScriptValue::Unpack(std::move(data)), ports,
std::move(callback));
}
PortalActivateEvent* PortalActivateEvent::Create(
const AtomicString& type,
const PortalActivateEventInit* init) {
return MakeGarbageCollected<PortalActivateEvent>(type, init);
}
PortalActivateEvent::PortalActivateEvent(
Document* document,
const base::UnguessableToken& predecessor_portal_token,
mojo::PendingAssociatedRemote<mojom::blink::Portal> predecessor_portal,
mojo::PendingAssociatedReceiver<mojom::blink::PortalClient>
predecessor_portal_client_receiver,
UnpackedSerializedScriptValue* data,
MessagePortArray* ports,
OnPortalActivatedCallback callback)
: Event(event_type_names::kPortalactivate,
Bubbles::kNo,
Cancelable::kNo,
base::TimeTicks::Now()),
document_(document),
predecessor_portal_token_(predecessor_portal_token),
predecessor_portal_(std::move(predecessor_portal)),
predecessor_portal_client_receiver_(
std::move(predecessor_portal_client_receiver)),
data_(data),
ports_(ports),
on_portal_activated_callback_(std::move(callback)) {}
PortalActivateEvent::PortalActivateEvent(const AtomicString& type,
const PortalActivateEventInit* init)
: Event(type, init) {
if (init->hasData()) {
data_from_init_.Set(V8PerIsolateData::MainThreadIsolate(),
init->data().V8Value());
}
// Remaining fields, such as |document_|, are left null.
// All accessors and operations must handle this case.
}
PortalActivateEvent::~PortalActivateEvent() = default;
ScriptValue PortalActivateEvent::data(ScriptState* script_state) {
v8::Isolate* isolate = script_state->GetIsolate();
v8::HandleScope handle_scope(isolate);
if (!data_ && data_from_init_.IsEmpty())
return ScriptValue(isolate, v8::Null(isolate));
auto result =
v8_data_.insert(script_state, TraceWrapperV8Reference<v8::Value>());
TraceWrapperV8Reference<v8::Value>& relevant_data =
result.stored_value->value;
if (!result.is_new_entry)
return ScriptValue(isolate, relevant_data.NewLocal(isolate));
v8::Local<v8::Value> value;
if (data_) {
SerializedScriptValue::DeserializeOptions options;
options.message_ports = ports_.Get();
value = data_->Deserialize(isolate, options);
} else {
DCHECK(!data_from_init_.IsEmpty());
value = data_from_init_.GetAcrossWorld(script_state);
}
relevant_data.Set(isolate, value);
return ScriptValue(isolate, value);
}
void PortalActivateEvent::Trace(Visitor* visitor) const {
Event::Trace(visitor);
visitor->Trace(document_);
visitor->Trace(adopted_portal_);
visitor->Trace(data_);
visitor->Trace(ports_);
visitor->Trace(data_from_init_);
visitor->Trace(v8_data_);
}
const AtomicString& PortalActivateEvent::InterfaceName() const {
return event_type_names::kPortalactivate;
}
HTMLPortalElement* PortalActivateEvent::adoptPredecessor(
ExceptionState& exception_state) {
if (!RuntimeEnabledFeatures::PortalsEnabled(
document_ ? document_->GetExecutionContext() : nullptr)) {
exception_state.ThrowDOMException(
DOMExceptionCode::kNotSupportedError,
"Portals is not enabled in this document.");
return nullptr;
}
if (!predecessor_portal_) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"The PortalActivateEvent is not associated with a predecessor browsing "
"context");
return nullptr;
}
DCHECK(!adopted_portal_);
adopted_portal_ = MakeGarbageCollected<HTMLPortalElement>(
*document_, predecessor_portal_token_, std::move(predecessor_portal_),
std::move(predecessor_portal_client_receiver_));
std::move(on_portal_activated_callback_)
.Run(mojom::blink::PortalActivateResult::kPredecessorWasAdopted);
return adopted_portal_;
}
void PortalActivateEvent::ExpireAdoptionLifetime() {
// End the special privilege associated with any adopted portals.
// This may destroy the guest contents.
if (adopted_portal_) {
adopted_portal_->ExpireAdoptionLifetime();
// We no longer need to hold the adopted portal, so stop drop the GC
// reference.
adopted_portal_ = nullptr;
}
// End the special privilege associated with the predecessor contents if it
// was not adopted. This may destroy the guest contents.
if (predecessor_portal_) {
std::move(on_portal_activated_callback_)
.Run(mojom::blink::PortalActivateResult::kPredecessorWillUnload);
predecessor_portal_.reset();
}
}
} // namespace blink
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