| /* |
| * 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 "v8_binding.h" |
| #include "v8_custom.h" |
| #include "v8_proxy.h" |
| |
| #include "V8Document.h" |
| #include "V8HTMLDocument.h" |
| #include "V8ObjectEventListener.h" |
| |
| #include "ExceptionCode.h" |
| #include "MessagePort.h" |
| |
| namespace WebCore { |
| |
| // FIXME: merge these with XHR's CreateHiddenXHRDependency |
| |
| // Use an array to hold dependents. It works like a ref-counted scheme. |
| // A value can be added more than once to the xhr object. |
| static void CreateHiddenDependency(v8::Local<v8::Object> object, |
| v8::Local<v8::Value> value) |
| { |
| ASSERT(V8Proxy::GetDOMWrapperType(object) == V8ClassIndex::MESSAGEPORT); |
| v8::Local<v8::Value> cache = object->GetInternalField(V8Custom::kMessagePortRequestCacheIndex); |
| if (cache->IsNull() || cache->IsUndefined()) { |
| cache = v8::Array::New(); |
| object->SetInternalField(V8Custom::kMessagePortRequestCacheIndex, cache); |
| } |
| |
| v8::Local<v8::Array> cacheArray = v8::Local<v8::Array>::Cast(cache); |
| cacheArray->Set(v8::Integer::New(cacheArray->Length()), value); |
| } |
| |
| static void RemoveHiddenDependency(v8::Local<v8::Object> object, |
| v8::Local<v8::Value> value) |
| { |
| ASSERT(V8Proxy::GetDOMWrapperType(object) == V8ClassIndex::MESSAGEPORT); |
| v8::Local<v8::Value> cache = object->GetInternalField(V8Custom::kMessagePortRequestCacheIndex); |
| ASSERT(cache->IsArray()); |
| v8::Local<v8::Array> cacheArray = v8::Local<v8::Array>::Cast(cache); |
| for (int i = cacheArray->Length() - 1; i >= 0; i--) { |
| v8::Local<v8::Value> cached = cacheArray->Get(v8::Integer::New(i)); |
| if (cached->StrictEquals(value)) { |
| cacheArray->Delete(i); |
| return; |
| } |
| } |
| |
| // We should only get here if we try to remove an event listener that was |
| // never added. |
| } |
| |
| ACCESSOR_GETTER(MessagePortOnmessage) |
| { |
| INC_STATS("DOM.MessagePort.onmessage._get"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, info.Holder()); |
| if (messagePort->onmessage()) { |
| V8ObjectEventListener* listener = |
| static_cast<V8ObjectEventListener*>(messagePort->onmessage()); |
| v8::Local<v8::Object> v8Listener = listener->getListenerObject(); |
| return v8Listener; |
| } |
| return v8::Undefined(); |
| } |
| |
| ACCESSOR_SETTER(MessagePortOnmessage) |
| { |
| INC_STATS("DOM.MessagePort.onmessage._set"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, info.Holder()); |
| if (value->IsNull()) { |
| if (messagePort->onmessage()) { |
| V8ObjectEventListener* listener = |
| static_cast<V8ObjectEventListener*>(messagePort->onmessage()); |
| v8::Local<v8::Object> v8Listener = listener->getListenerObject(); |
| RemoveHiddenDependency(info.Holder(), v8Listener); |
| } |
| |
| // Clear the listener |
| messagePort->setOnmessage(0); |
| |
| } else { |
| V8Proxy* proxy = V8Proxy::retrieve(messagePort->scriptExecutionContext()); |
| if (!proxy) |
| return; |
| |
| RefPtr<EventListener> listener = |
| proxy->FindOrCreateObjectEventListener(value, false); |
| if (listener) { |
| messagePort->setOnmessage(listener); |
| CreateHiddenDependency(info.Holder(), value); |
| } |
| } |
| } |
| |
| ACCESSOR_GETTER(MessagePortOnclose) |
| { |
| INC_STATS("DOM.MessagePort.onclose._get"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, info.Holder()); |
| if (messagePort->onclose()) { |
| V8ObjectEventListener* listener = |
| static_cast<V8ObjectEventListener*>(messagePort->onclose()); |
| v8::Local<v8::Object> v8Listener = listener->getListenerObject(); |
| return v8Listener; |
| } |
| return v8::Undefined(); |
| } |
| |
| ACCESSOR_SETTER(MessagePortOnclose) |
| { |
| INC_STATS("DOM.MessagePort.onclose._set"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, info.Holder()); |
| if (value->IsNull()) { |
| if (messagePort->onclose()) { |
| V8ObjectEventListener* listener = |
| static_cast<V8ObjectEventListener*>(messagePort->onclose()); |
| v8::Local<v8::Object> v8Listener = listener->getListenerObject(); |
| RemoveHiddenDependency(info.Holder(), v8Listener); |
| } |
| |
| // Clear the listener |
| messagePort->setOnclose(0); |
| } else { |
| V8Proxy* proxy = V8Proxy::retrieve(messagePort->scriptExecutionContext()); |
| if (!proxy) |
| return; |
| |
| RefPtr<EventListener> listener = |
| proxy->FindOrCreateObjectEventListener(value, false); |
| if (listener) { |
| messagePort->setOnclose(listener); |
| CreateHiddenDependency(info.Holder(), value); |
| } |
| } |
| } |
| |
| CALLBACK_FUNC_DECL(MessagePortStartConversation) |
| { |
| INC_STATS("DOM.MessagePort.StartConversation()"); |
| if (args.Length() < 1) { |
| V8Proxy::ThrowError(V8Proxy::SYNTAX_ERROR, "Not enough arguments"); |
| return v8::Undefined(); |
| } |
| |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, args.Holder()); |
| |
| V8Proxy* proxy = V8Proxy::retrieve(messagePort->scriptExecutionContext()); |
| if (!proxy) |
| return v8::Undefined(); |
| |
| RefPtr<MessagePort> port = |
| messagePort->startConversation(messagePort->scriptExecutionContext(), |
| ToWebCoreString(args[0])); |
| v8::Handle<v8::Value> wrapper = |
| V8Proxy::ToV8Object(V8ClassIndex::MESSAGEPORT, port.get()); |
| return wrapper; |
| } |
| |
| CALLBACK_FUNC_DECL(MessagePortAddEventListener) |
| { |
| INC_STATS("DOM.MessagePort.AddEventListener()"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, args.Holder()); |
| |
| V8Proxy* proxy = V8Proxy::retrieve(messagePort->scriptExecutionContext()); |
| if (!proxy) |
| return v8::Undefined(); |
| |
| RefPtr<EventListener> listener = |
| proxy->FindOrCreateObjectEventListener(args[1], false); |
| if (listener) { |
| String type = ToWebCoreString(args[0]); |
| bool useCapture = args[2]->BooleanValue(); |
| messagePort->addEventListener(type, listener, useCapture); |
| |
| CreateHiddenDependency(args.Holder(), args[1]); |
| } |
| return v8::Undefined(); |
| } |
| |
| CALLBACK_FUNC_DECL(MessagePortRemoveEventListener) |
| { |
| INC_STATS("DOM.MessagePort.RemoveEventListener()"); |
| MessagePort* messagePort = V8Proxy::ToNativeObject<MessagePort>( |
| V8ClassIndex::MESSAGEPORT, args.Holder()); |
| |
| V8Proxy* proxy = V8Proxy::retrieve(messagePort->scriptExecutionContext()); |
| if (!proxy) |
| return v8::Undefined(); // probably leaked |
| |
| RefPtr<EventListener> listener = |
| proxy->FindObjectEventListener(args[1], false); |
| |
| if (listener) { |
| String type = ToWebCoreString(args[0]); |
| bool useCapture = args[2]->BooleanValue(); |
| messagePort->removeEventListener(type, listener.get(), useCapture); |
| |
| RemoveHiddenDependency(args.Holder(), args[1]); |
| } |
| |
| return v8::Undefined(); |
| } |
| |
| } // namespace WebCore |