Remove postMessage, MessageChannel and MessagePort.

sky/engine/core/dom/MessagePort.cpp

Index: sky/engine/core/dom/MessagePort.cpp
diff --git a/sky/engine/core/dom/MessagePort.cpp b/sky/engine/core/dom/MessagePort.cpp
deleted file mode 100644
index ca5d525adf7cff51e4312ed15240890ced01b422..0000000000000000000000000000000000000000
--- a/sky/engine/core/dom/MessagePort.cpp
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * Copyright (C) 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 "config.h"
-#include "core/dom/MessagePort.h"
-
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/ExceptionStatePlaceholder.h"
-#include "bindings/core/v8/SerializedScriptValue.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/events/MessageEvent.h"
-#include "core/frame/LocalDOMWindow.h"
-#include "public/platform/WebString.h"
-#include "wtf/Functional.h"
-#include "wtf/text/AtomicString.h"
-
-namespace blink {
-
-PassRefPtrWillBeRawPtr<MessagePort> MessagePort::create(ExecutionContext& executionContext)
-{
-    RefPtrWillBeRawPtr<MessagePort> port = adoptRefWillBeNoop(new MessagePort(executionContext));
-    port->suspendIfNeeded();
-    return port.release();
-}
-
-MessagePort::MessagePort(ExecutionContext& executionContext)
-    : ActiveDOMObject(&executionContext)
-    , m_started(false)
-    , m_closed(false)
-    , m_weakFactory(this)
-{
-    ScriptWrappable::init(this);
-}
-
-MessagePort::~MessagePort()
-{
-    close();
-}
-
-void MessagePort::postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, ExceptionState& exceptionState)
-{
-    if (!isEntangled())
-        return;
-    ASSERT(executionContext());
-    ASSERT(m_entangledChannel);
-
-    OwnPtr<MessagePortChannelArray> channels;
-    // Make sure we aren't connected to any of the passed-in ports.
-    if (ports) {
-        for (unsigned i = 0; i < ports->size(); ++i) {
-            MessagePort* dataPort = (*ports)[i].get();
-            if (dataPort == this) {
-                exceptionState.throwDOMException(DataCloneError, "Port at index " + String::number(i) + " contains the source port.");
-                return;
-            }
-        }
-        channels = MessagePort::disentanglePorts(ports, exceptionState);
-        if (exceptionState.hadException())
-            return;
-    }
-
-    WebString messageString = message->toWireString();
-    OwnPtr<WebMessagePortChannelArray> webChannels = toWebMessagePortChannelArray(channels.release());
-    m_entangledChannel->postMessage(messageString, webChannels.leakPtr());
-}
-
-// static
-PassOwnPtr<WebMessagePortChannelArray> MessagePort::toWebMessagePortChannelArray(PassOwnPtr<MessagePortChannelArray> channels)
-{
-    OwnPtr<WebMessagePortChannelArray> webChannels;
-    if (channels && channels->size()) {
-        webChannels = adoptPtr(new WebMessagePortChannelArray(channels->size()));
-        for (size_t i = 0; i < channels->size(); ++i)
-            (*webChannels)[i] = (*channels)[i].leakPtr();
-    }
-    return webChannels.release();
-}
-
-// static
-PassOwnPtrWillBeRawPtr<MessagePortArray> MessagePort::toMessagePortArray(ExecutionContext* context, const WebMessagePortChannelArray& webChannels)
-{
-    OwnPtrWillBeRawPtr<MessagePortArray> ports = nullptr;
-    if (!webChannels.isEmpty()) {
-        OwnPtr<MessagePortChannelArray> channels = adoptPtr(new MessagePortChannelArray(webChannels.size()));
-        for (size_t i = 0; i < webChannels.size(); ++i)
-            (*channels)[i] = adoptPtr(webChannels[i]);
-        ports = MessagePort::entanglePorts(*context, channels.release());
-    }
-    return ports.release();
-}
-
-PassOwnPtr<WebMessagePortChannel> MessagePort::disentangle()
-{
-    ASSERT(m_entangledChannel);
-    m_entangledChannel->setClient(0);
-    return m_entangledChannel.release();
-}
-
-// Invoked to notify us that there are messages available for this port.
-// This code may be called from another thread, and so should not call any non-threadsafe APIs (i.e. should not call into the entangled channel or access mutable variables).
-void MessagePort::messageAvailable()
-{
-    callOnMainThread(bind(&MessagePort::dispatchMessages, m_weakFactory.createWeakPtr()));
-}
-
-void MessagePort::start()
-{
-    // Do nothing if we've been cloned or closed.
-    if (!isEntangled())
-        return;
-
-    ASSERT(executionContext());
-    if (m_started)
-        return;
-
-    m_started = true;
-    messageAvailable();
-}
-
-void MessagePort::close()
-{
-    if (isEntangled())
-        m_entangledChannel->setClient(0);
-    m_closed = true;
-}
-
-void MessagePort::entangle(PassOwnPtr<WebMessagePortChannel> remote)
-{
-    // Only invoked to set our initial entanglement.
-    ASSERT(!m_entangledChannel);
-    ASSERT(executionContext());
-
-    m_entangledChannel = remote;
-    m_entangledChannel->setClient(this);
-}
-
-const AtomicString& MessagePort::interfaceName() const
-{
-    return EventTargetNames::MessagePort;
-}
-
-static bool tryGetMessageFrom(WebMessagePortChannel& webChannel, RefPtr<SerializedScriptValue>& message, OwnPtr<MessagePortChannelArray>& channels)
-{
-    WebString messageString;
-    WebMessagePortChannelArray webChannels;
-    if (!webChannel.tryGetMessage(&messageString, webChannels))
-        return false;
-
-    if (webChannels.size()) {
-        channels = adoptPtr(new MessagePortChannelArray(webChannels.size()));
-        for (size_t i = 0; i < webChannels.size(); ++i)
-            (*channels)[i] = adoptPtr(webChannels[i]);
-    }
-    message = SerializedScriptValue::createFromWire(messageString);
-    return true;
-}
-
-void MessagePort::dispatchMessages()
-{
-    // Messages for contexts that are not fully active get dispatched too, but JSAbstractEventListener::handleEvent() doesn't call handlers for these.
-    // The HTML5 spec specifies that any messages sent to a document that is not fully active should be dropped, so this behavior is OK.
-    if (!started())
-        return;
-
-    RefPtr<SerializedScriptValue> message;
-    OwnPtr<MessagePortChannelArray> channels;
-    while (m_entangledChannel && tryGetMessageFrom(*m_entangledChannel, message, channels)) {
-        OwnPtrWillBeRawPtr<MessagePortArray> ports = MessagePort::entanglePorts(*executionContext(), channels.release());
-        RefPtrWillBeRawPtr<Event> evt = MessageEvent::create(ports.release(), message.release());
-
-        dispatchEvent(evt.release(), ASSERT_NO_EXCEPTION);
-    }
-}
-
-bool MessagePort::hasPendingActivity() const
-{
-    // The spec says that entangled message ports should always be treated as if they have a strong reference.
-    // We'll also stipulate that the queue needs to be open (if the app drops its reference to the port before start()-ing it, then it's not really entangled as it's unreachable).
-    return m_started && isEntangled();
-}
-
-PassOwnPtr<MessagePortChannelArray> MessagePort::disentanglePorts(const MessagePortArray* ports, ExceptionState& exceptionState)
-{
-    if (!ports || !ports->size())
-        return nullptr;
-
-    // HashSet used to efficiently check for duplicates in the passed-in array.
-    HashSet<MessagePort*> portSet;
-
-    // Walk the incoming array - if there are any duplicate ports, or null ports or cloned ports, throw an error (per section 8.3.3 of the HTML5 spec).
-    for (unsigned i = 0; i < ports->size(); ++i) {
-        MessagePort* port = (*ports)[i].get();
-        if (!port || port->isNeutered() || portSet.contains(port)) {
-            String type;
-            if (!port)
-                type = "null";
-            else if (port->isNeutered())
-                type = "already neutered";
-            else
-                type = "a duplicate";
-            exceptionState.throwDOMException(DataCloneError, "Port at index "  + String::number(i) + " is " + type + ".");
-            return nullptr;
-        }
-        portSet.add(port);
-    }
-
-    // Passed-in ports passed validity checks, so we can disentangle them.
-    OwnPtr<MessagePortChannelArray> portArray = adoptPtr(new MessagePortChannelArray(ports->size()));
-    for (unsigned i = 0; i < ports->size(); ++i)
-        (*portArray)[i] = (*ports)[i]->disentangle();
-    return portArray.release();
-}
-
-PassOwnPtrWillBeRawPtr<MessagePortArray> MessagePort::entanglePorts(ExecutionContext& context, PassOwnPtr<MessagePortChannelArray> channels)
-{
-    if (!channels || !channels->size())
-        return nullptr;
-
-    OwnPtrWillBeRawPtr<MessagePortArray> portArray = adoptPtrWillBeNoop(new MessagePortArray(channels->size()));
-    for (unsigned i = 0; i < channels->size(); ++i) {
-        RefPtrWillBeRawPtr<MessagePort> port = MessagePort::create(context);
-        port->entangle((*channels)[i].release());
-        (*portArray)[i] = port.release();
-    }
-    return portArray.release();
-}
-
-} // namespace blink