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/*
* Copyright (C) 2007 Henry Mason (hmason@mac.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MESSAGE_EVENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MESSAGE_EVENT_H_
#include <memory>
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialized_script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/unpacked_serialized_script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/world_safe_v8_reference.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/core/fileapi/blob.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/platform/bindings/v8_private_property.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
namespace blink {
class MessageEventInit;
class UserActivation;
class CORE_EXPORT MessageEvent final : public Event {
DEFINE_WRAPPERTYPEINFO();
public:
static MessageEvent* Create() { return MakeGarbageCollected<MessageEvent>(); }
static MessageEvent* Create(MessagePortArray* ports,
const String& origin = String(),
const String& last_event_id = String(),
EventTarget* source = nullptr) {
return MakeGarbageCollected<MessageEvent>(origin, last_event_id, source,
ports);
}
static MessageEvent* Create(MessagePortArray* ports,
scoped_refptr<SerializedScriptValue> data,
const String& origin = String(),
const String& last_event_id = String(),
EventTarget* source = nullptr) {
return MakeGarbageCollected<MessageEvent>(
std::move(data), origin, last_event_id, source, ports, nullptr);
}
static MessageEvent* Create(MessagePortArray* ports,
scoped_refptr<SerializedScriptValue> data,
UserActivation* user_activation) {
return MakeGarbageCollected<MessageEvent>(
std::move(data), String(), String(), nullptr, ports, user_activation);
}
static MessageEvent* Create(Vector<MessagePortChannel> channels,
scoped_refptr<SerializedScriptValue> data,
const String& origin = String(),
const String& last_event_id = String(),
EventTarget* source = nullptr,
UserActivation* user_activation = nullptr) {
return MakeGarbageCollected<MessageEvent>(
std::move(data), origin, last_event_id, source, std::move(channels),
user_activation);
}
static MessageEvent* CreateError(const String& origin = String(),
EventTarget* source = nullptr) {
return MakeGarbageCollected<MessageEvent>(origin, source);
}
static MessageEvent* Create(const String& data,
const String& origin = String()) {
return MakeGarbageCollected<MessageEvent>(data, origin);
}
static MessageEvent* Create(Blob* data, const String& origin = String()) {
return MakeGarbageCollected<MessageEvent>(data, origin);
}
static MessageEvent* Create(DOMArrayBuffer* data,
const String& origin = String()) {
return MakeGarbageCollected<MessageEvent>(data, origin);
}
static MessageEvent* Create(const AtomicString& type,
const MessageEventInit* initializer,
ExceptionState&);
MessageEvent();
MessageEvent(const AtomicString&, const MessageEventInit*);
MessageEvent(const String& origin,
const String& last_event_id,
EventTarget* source,
MessagePortArray*);
MessageEvent(scoped_refptr<SerializedScriptValue> data,
const String& origin,
const String& last_event_id,
EventTarget* source,
MessagePortArray*,
UserActivation* user_activation);
MessageEvent(scoped_refptr<SerializedScriptValue> data,
const String& origin,
const String& last_event_id,
EventTarget* source,
Vector<MessagePortChannel>,
UserActivation* user_activation);
// Creates a "messageerror" event.
MessageEvent(const String& origin, EventTarget* source);
MessageEvent(const String& data, const String& origin);
MessageEvent(Blob* data, const String& origin);
MessageEvent(DOMArrayBuffer* data, const String& origin);
~MessageEvent() override;
void initMessageEvent(const AtomicString& type,
bool bubbles,
bool cancelable,
const ScriptValue& data,
const String& origin,
const String& last_event_id,
EventTarget* source,
MessagePortArray& ports);
void initMessageEvent(const AtomicString& type,
bool bubbles,
bool cancelable,
scoped_refptr<SerializedScriptValue> data,
const String& origin,
const String& last_event_id,
EventTarget* source,
MessagePortArray*,
UserActivation* user_activation);
void initMessageEvent(const AtomicString& type,
bool bubbles,
bool cancelable,
const String& data,
const String& origin,
const String& last_event_id,
EventTarget* source,
MessagePortArray*);
ScriptValue data(ScriptState*);
bool IsDataDirty() const { return is_data_dirty_; }
const String& origin() const { return origin_; }
const String& lastEventId() const { return last_event_id_; }
EventTarget* source() const { return source_.Get(); }
MessagePortArray ports();
bool isPortsDirty() const { return is_ports_dirty_; }
UserActivation* userActivation() const { return user_activation_; }
Vector<MessagePortChannel> ReleaseChannels() { return std::move(channels_); }
const AtomicString& InterfaceName() const override;
// Use with caution. Since the data has already been unpacked, the underlying
// SerializedScriptValue will no longer contain transferred contents.
SerializedScriptValue* DataAsSerializedScriptValue() const {
DCHECK_EQ(data_type_, kDataTypeSerializedScriptValue);
return data_as_serialized_script_value_->Value();
}
// Returns true when |data_as_serialized_script_value_| contains values that
// remote origins cannot access. If true, remote origins must dispatch a
// messageerror event instead of message event.
bool IsOriginCheckRequiredToAccessData() const;
// Returns true when |data_as_serialized_script_value_| is locked to an
// agent cluster.
bool IsLockedToAgentCluster() const;
void EntangleMessagePorts(ExecutionContext*);
void Trace(Visitor*) const override;
void LockToAgentCluster();
WARN_UNUSED_RESULT v8::Local<v8::Object> AssociateWithWrapper(
v8::Isolate*,
const WrapperTypeInfo*,
v8::Local<v8::Object> wrapper) override;
private:
enum DataType {
kDataTypeNull, // For "messageerror" events.
kDataTypeScriptValue,
kDataTypeSerializedScriptValue,
kDataTypeString,
kDataTypeBlob,
kDataTypeArrayBuffer
};
size_t SizeOfExternalMemoryInBytes();
void RegisterAmountOfExternallyAllocatedMemory();
void UnregisterAmountOfExternallyAllocatedMemory();
DataType data_type_;
WorldSafeV8Reference<v8::Value> data_as_v8_value_;
Member<UnpackedSerializedScriptValue> data_as_serialized_script_value_;
String data_as_string_;
Member<Blob> data_as_blob_;
Member<DOMArrayBuffer> data_as_array_buffer_;
bool is_data_dirty_ = true;
String origin_;
String last_event_id_;
Member<EventTarget> source_;
// ports_ are the MessagePorts in an entangled state, and channels_ are
// the MessageChannels in a disentangled state. Only one of them can be
// non-empty at a time. EntangleMessagePorts() moves between the states.
Member<MessagePortArray> ports_;
bool is_ports_dirty_ = true;
Vector<MessagePortChannel> channels_;
Member<UserActivation> user_activation_;
size_t amount_of_external_memory_ = 0;
// For serialized messages across process this attribute contains the
// information of whether the actual original SerializedScriptValue was locked
// to the agent cluster.
bool locked_to_agent_cluster_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EVENTS_MESSAGE_EVENT_H_
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