/platform/external/webkit/WebCore/bindings/v8/custom/V8MessagePortCustom.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 136 lines · 90 code · 14 blank · 32 comment · 12 complexity · 15a1720db8ea0846260fc2fbb40a3c1d MD5 · raw file
- /*
- * Copyright (C) 2009 Google 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:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "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 THE COPYRIGHT
- * OWNER 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 "config.h"
- #include "ExceptionCode.h"
- #include "MessagePort.h"
- #include "SerializedScriptValue.h"
- #include "V8Binding.h"
- #include "V8MessagePortCustom.h"
- #include "V8MessagePort.h"
- #include "V8Proxy.h"
- #include "V8Utilities.h"
- #include "WorkerContextExecutionProxy.h"
- namespace WebCore {
- v8::Handle<v8::Value> V8MessagePort::addEventListenerCallback(const v8::Arguments& args)
- {
- INC_STATS("DOM.MessagePort.addEventListener()");
- MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
- RefPtr<EventListener> listener = V8DOMWrapper::getEventListener(messagePort, args[1], false, ListenerFindOrCreate);
- if (listener) {
- String type = toWebCoreString(args[0]);
- bool useCapture = args[2]->BooleanValue();
- messagePort->addEventListener(type, listener, useCapture);
- createHiddenDependency(args.Holder(), args[1], cacheIndex);
- }
- return v8::Undefined();
- }
- v8::Handle<v8::Value> V8MessagePort::removeEventListenerCallback(const v8::Arguments& args)
- {
- INC_STATS("DOM.MessagePort.removeEventListener()");
- MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
- RefPtr<EventListener> listener = V8DOMWrapper::getEventListener(messagePort, args[1], false, ListenerFindOnly);
- if (listener) {
- String type = toWebCoreString(args[0]);
- bool useCapture = args[2]->BooleanValue();
- messagePort->removeEventListener(type, listener.get(), useCapture);
- removeHiddenDependency(args.Holder(), args[1], cacheIndex);
- }
- return v8::Undefined();
- }
- v8::Handle<v8::Value> V8MessagePort::postMessageCallback(const v8::Arguments& args)
- {
- INC_STATS("DOM.MessagePort.postMessage");
- MessagePort* messagePort = V8MessagePort::toNative(args.Holder());
- RefPtr<SerializedScriptValue> message = SerializedScriptValue::create(args[0]);
- MessagePortArray portArray;
- if (args.Length() > 1) {
- if (!getMessagePortArray(args[1], portArray))
- return v8::Undefined();
- }
- ExceptionCode ec = 0;
- messagePort->postMessage(message.release(), &portArray, ec);
- return throwError(ec);
- }
- bool getMessagePortArray(v8::Local<v8::Value> value, MessagePortArray& portArray)
- {
- if (isUndefinedOrNull(value)) {
- portArray.resize(0);
- return true;
- }
- if (!value->IsObject()) {
- throwError("MessagePortArray argument must be an object");
- return false;
- }
- uint32_t length = 0;
- v8::Local<v8::Object> ports = v8::Local<v8::Object>::Cast(value);
- if (value->IsArray()) {
- v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(value);
- length = array->Length();
- } else {
- // Sequence-type object - get the length attribute
- v8::Local<v8::Value> sequenceLength = ports->Get(v8::String::New("length"));
- if (!sequenceLength->IsNumber()) {
- throwError("MessagePortArray argument has no length attribute");
- return false;
- }
- length = sequenceLength->Uint32Value();
- }
- portArray.resize(length);
- for (unsigned int i = 0; i < length; ++i) {
- v8::Local<v8::Value> port = ports->Get(v8::Integer::New(i));
- // Validation of non-null objects, per HTML5 spec 8.3.3.
- if (isUndefinedOrNull(port)) {
- throwError(INVALID_STATE_ERR);
- return false;
- }
- // Validation of Objects implementing an interface, per WebIDL spec 4.1.15.
- if (!V8MessagePort::HasInstance(port)) {
- throwError("MessagePortArray argument must contain only MessagePorts");
- return false;
- }
- portArray[i] = V8MessagePort::toNative(v8::Handle<v8::Object>::Cast(port));
- }
- return true;
- }
- } // namespace WebCore