| /* |
| * Copyright (C) 2007 Henry Mason (hmason@mac.com) |
| * Copyright (C) 2003, 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. |
| * |
| */ |
| |
| #include "core/events/MessageEvent.h" |
| |
| #include <memory> |
| #include "bindings/core/v8/ExceptionMessages.h" |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/V8ArrayBuffer.h" |
| #include "platform/bindings/V8PrivateProperty.h" |
| |
| namespace blink { |
| |
| static inline bool IsValidSource(EventTarget* source) { |
| return !source || source->ToLocalDOMWindow() || source->ToMessagePort() || |
| source->ToServiceWorker(); |
| } |
| |
| MessageEvent::V8GCAwareString::V8GCAwareString(const String& value) |
| : string_(value) { |
| const int64_t size = string_.length(); |
| v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(size); |
| } |
| |
| MessageEvent::V8GCAwareString::~V8GCAwareString() { |
| const int64_t size = string_.length(); |
| v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(-size); |
| } |
| |
| MessageEvent::V8GCAwareString& MessageEvent::V8GCAwareString::operator=( |
| const String& other) { |
| const int64_t old_size = string_.length(); |
| const int64_t new_size = other.length(); |
| string_ = other; |
| v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(new_size - |
| old_size); |
| return *this; |
| } |
| |
| MessageEvent::MessageEvent() : data_type_(kDataTypeScriptValue) {} |
| |
| MessageEvent::MessageEvent(const AtomicString& type, |
| const MessageEventInit& initializer) |
| : Event(type, initializer), |
| data_type_(kDataTypeScriptValue), |
| source_(nullptr) { |
| if (initializer.hasData()) |
| data_as_script_value_ = initializer.data(); |
| if (initializer.hasOrigin()) |
| origin_ = initializer.origin(); |
| if (initializer.hasLastEventId()) |
| last_event_id_ = initializer.lastEventId(); |
| if (initializer.hasSource() && IsValidSource(initializer.source())) |
| source_ = initializer.source(); |
| if (initializer.hasPorts()) |
| ports_ = new MessagePortArray(initializer.ports()); |
| DCHECK(IsValidSource(source_.Get())); |
| } |
| |
| MessageEvent::MessageEvent(const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| MessagePortArray* ports, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeScriptValue), |
| origin_(origin), |
| last_event_id_(last_event_id), |
| source_(source), |
| ports_(ports) { |
| DCHECK(IsValidSource(source_.Get())); |
| } |
| |
| MessageEvent::MessageEvent(scoped_refptr<SerializedScriptValue> data, |
| const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| MessagePortArray* ports, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeSerializedScriptValue), |
| data_as_serialized_script_value_( |
| SerializedScriptValue::Unpack(std::move(data))), |
| origin_(origin), |
| last_event_id_(last_event_id), |
| source_(source), |
| ports_(ports) { |
| DCHECK(IsValidSource(source_.Get())); |
| } |
| |
| MessageEvent::MessageEvent(scoped_refptr<SerializedScriptValue> data, |
| const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| Vector<MessagePortChannel> channels, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeSerializedScriptValue), |
| data_as_serialized_script_value_( |
| SerializedScriptValue::Unpack(std::move(data))), |
| origin_(origin), |
| last_event_id_(last_event_id), |
| source_(source), |
| channels_(std::move(channels)), |
| suborigin_(suborigin) { |
| DCHECK(IsValidSource(source_.Get())); |
| } |
| |
| MessageEvent::MessageEvent(const String& data, |
| const String& origin, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeString), |
| data_as_string_(data), |
| origin_(origin) {} |
| |
| MessageEvent::MessageEvent(Blob* data, |
| const String& origin, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeBlob), |
| data_as_blob_(data), |
| origin_(origin) {} |
| |
| MessageEvent::MessageEvent(DOMArrayBuffer* data, |
| const String& origin, |
| const String& suborigin) |
| : Event(EventTypeNames::message, false, false), |
| data_type_(kDataTypeArrayBuffer), |
| data_as_array_buffer_(data), |
| origin_(origin) {} |
| |
| MessageEvent::~MessageEvent() = default; |
| |
| MessageEvent* MessageEvent::Create(const AtomicString& type, |
| const MessageEventInit& initializer, |
| ExceptionState& exception_state) { |
| if (initializer.source() && !IsValidSource(initializer.source())) { |
| exception_state.ThrowTypeError( |
| "The optional 'source' property is neither a Window nor MessagePort."); |
| return nullptr; |
| } |
| return new MessageEvent(type, initializer); |
| } |
| |
| void MessageEvent::initMessageEvent(const AtomicString& type, |
| bool can_bubble, |
| bool cancelable, |
| ScriptValue data, |
| const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| MessagePortArray* ports) { |
| if (IsBeingDispatched()) |
| return; |
| |
| initEvent(type, can_bubble, cancelable); |
| |
| data_type_ = kDataTypeScriptValue; |
| data_as_script_value_ = data; |
| origin_ = origin; |
| last_event_id_ = last_event_id; |
| source_ = source; |
| ports_ = ports; |
| is_ports_dirty_ = true; |
| suborigin_ = ""; |
| } |
| |
| void MessageEvent::initMessageEvent(const AtomicString& type, |
| bool can_bubble, |
| bool cancelable, |
| scoped_refptr<SerializedScriptValue> data, |
| const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| MessagePortArray* ports) { |
| if (IsBeingDispatched()) |
| return; |
| |
| initEvent(type, can_bubble, cancelable); |
| |
| data_type_ = kDataTypeSerializedScriptValue; |
| data_as_serialized_script_value_ = |
| SerializedScriptValue::Unpack(std::move(data)); |
| origin_ = origin; |
| last_event_id_ = last_event_id; |
| source_ = source; |
| ports_ = ports; |
| is_ports_dirty_ = true; |
| suborigin_ = ""; |
| } |
| |
| void MessageEvent::initMessageEvent(const AtomicString& type, |
| bool can_bubble, |
| bool cancelable, |
| const String& data, |
| const String& origin, |
| const String& last_event_id, |
| EventTarget* source, |
| MessagePortArray* ports) { |
| if (IsBeingDispatched()) |
| return; |
| |
| initEvent(type, can_bubble, cancelable); |
| |
| data_type_ = kDataTypeString; |
| data_as_string_ = data; |
| origin_ = origin; |
| last_event_id_ = last_event_id; |
| source_ = source; |
| ports_ = ports; |
| is_ports_dirty_ = true; |
| suborigin_ = ""; |
| } |
| |
| const AtomicString& MessageEvent::InterfaceName() const { |
| return EventNames::MessageEvent; |
| } |
| |
| MessagePortArray MessageEvent::ports() { |
| // TODO(bashi): Currently we return a copied array because the binding |
| // layer could modify the content of the array while executing JS callbacks. |
| // Avoid copying once we can make sure that the binding layer won't |
| // modify the content. |
| is_ports_dirty_ = false; |
| return ports_ ? *ports_ : MessagePortArray(); |
| } |
| |
| void MessageEvent::EntangleMessagePorts(ExecutionContext* context) { |
| ports_ = MessagePort::EntanglePorts(*context, std::move(channels_)); |
| is_ports_dirty_ = true; |
| } |
| |
| void MessageEvent::Trace(blink::Visitor* visitor) { |
| visitor->Trace(data_as_serialized_script_value_); |
| visitor->Trace(data_as_blob_); |
| visitor->Trace(data_as_array_buffer_); |
| visitor->Trace(source_); |
| visitor->Trace(ports_); |
| Event::Trace(visitor); |
| } |
| |
| v8::Local<v8::Object> MessageEvent::AssociateWithWrapper( |
| v8::Isolate* isolate, |
| const WrapperTypeInfo* wrapper_type, |
| v8::Local<v8::Object> wrapper) { |
| wrapper = Event::AssociateWithWrapper(isolate, wrapper_type, wrapper); |
| |
| // Ensures a wrapper is created for the data to return now so that V8 knows |
| // how much memory is used via the wrapper. To keep the wrapper alive, it's |
| // set to the wrapper of the MessageEvent as a private value. |
| switch (GetDataType()) { |
| case MessageEvent::kDataTypeScriptValue: |
| case MessageEvent::kDataTypeSerializedScriptValue: |
| break; |
| case MessageEvent::kDataTypeString: |
| V8PrivateProperty::GetMessageEventCachedData(isolate).Set( |
| wrapper, V8String(isolate, DataAsString())); |
| break; |
| case MessageEvent::kDataTypeBlob: |
| break; |
| case MessageEvent::kDataTypeArrayBuffer: |
| V8PrivateProperty::GetMessageEventCachedData(isolate).Set( |
| wrapper, ToV8(DataAsArrayBuffer(), wrapper, isolate)); |
| break; |
| } |
| |
| return wrapper; |
| } |
| |
| } // namespace blink |
