AI 145796: Land the WebKit merge @r42026.

Automated import of CL 145796

1 files changed, 269 insertions, 0 deletions

diff --git a/WebCore/workers/WorkerContext.cpp b/WebCore/workers/WorkerContext.cpp
new file mode 100644
index 0000000..69ef472
--- /dev/null
+++ b/WebCore/workers/WorkerContext.cpp
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ * 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:
+ * 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"
+
+#if ENABLE(WORKERS)
+
+#include "WorkerContext.h"
+
+#include "ActiveDOMObject.h"
+#include "DOMTimer.h"
+#include "DOMWindow.h"
+#include "Event.h"
+#include "EventException.h"
+#include "MessageEvent.h"
+#include "NotImplemented.h"
+#include "ResourceRequest.h"
+#include "ScriptSourceCode.h"
+#include "ScriptValue.h"
+#include "SecurityOrigin.h"
+#include "ThreadableLoader.h"
+#include "WorkerImportScriptsClient.h"
+#include "WorkerLocation.h"
+#include "WorkerNavigator.h"
+#include "WorkerObjectProxy.h"
+#include "WorkerThread.h"
+#include "XMLHttpRequestException.h"
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+WorkerContext::WorkerContext(const KURL& url, const String& userAgent, WorkerThread* thread)
+    : m_url(url)
+    , m_userAgent(userAgent)
+    , m_location(WorkerLocation::create(url))
+    , m_script(new WorkerScriptController(this))
+    , m_thread(thread)
+{
+    setSecurityOrigin(SecurityOrigin::create(url));
+}
+
+WorkerContext::~WorkerContext()
+{
+    ASSERT(currentThread() == m_thread->threadID());
+
+    m_thread->workerObjectProxy()->workerContextDestroyed();
+}
+
+ScriptExecutionContext* WorkerContext::scriptExecutionContext() const
+{
+    return const_cast<WorkerContext*>(this);
+}
+
+const KURL& WorkerContext::virtualURL() const
+{
+    return m_url;
+}
+
+KURL WorkerContext::virtualCompleteURL(const String& url) const
+{
+    return completeURL(url);
+}
+
+KURL WorkerContext::completeURL(const String& url) const
+{
+    // Always return a null URL when passed a null string.
+    // FIXME: Should we change the KURL constructor to have this behavior?
+    if (url.isNull())
+        return KURL();
+    // Always use UTF-8 in Workers.
+    return KURL(m_location->url(), url);
+}
+
+String WorkerContext::userAgent(const KURL&) const
+{
+    return m_userAgent;
+}
+
+WorkerNavigator* WorkerContext::navigator() const
+{
+    if (!m_navigator)
+        m_navigator = WorkerNavigator::create(m_userAgent);
+    return m_navigator.get();
+}
+
+bool WorkerContext::hasPendingActivity() const
+{
+    ActiveDOMObjectsMap& activeObjects = activeDOMObjects();
+    ActiveDOMObjectsMap::const_iterator activeObjectsEnd = activeObjects.end();
+    for (ActiveDOMObjectsMap::const_iterator iter = activeObjects.begin(); iter != activeObjectsEnd; ++iter) {
+        if (iter->first->hasPendingActivity())
+            return true;
+    }
+    return false;
+}
+
+void WorkerContext::reportException(const String& errorMessage, int lineNumber, const String& sourceURL)
+{
+    m_thread->workerObjectProxy()->postExceptionToWorkerObject(errorMessage, lineNumber, sourceURL);
+}
+
+void WorkerContext::addMessage(MessageDestination destination, MessageSource source, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceURL)
+{
+    m_thread->workerObjectProxy()->postConsoleMessageToWorkerObject(destination, source, level, message, lineNumber, sourceURL);
+}
+
+void WorkerContext::resourceRetrievedByXMLHttpRequest(unsigned long, const ScriptString&)
+{
+    // FIXME: The implementation is pending the fixes in https://bugs.webkit.org/show_bug.cgi?id=23175
+    notImplemented();
+}
+
+void WorkerContext::scriptImported(unsigned long, const String&)
+{
+    // FIXME: The implementation is pending the fixes in https://bugs.webkit.org/show_bug.cgi?id=23175
+    notImplemented();
+}
+
+void WorkerContext::postMessage(const String& message)
+{
+    m_thread->workerObjectProxy()->postMessageToWorkerObject(message);
+}
+
+void WorkerContext::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> eventListener, bool)
+{
+    EventListenersMap::iterator iter = m_eventListeners.find(eventType);
+    if (iter == m_eventListeners.end()) {
+        ListenerVector listeners;
+        listeners.append(eventListener);
+        m_eventListeners.add(eventType, listeners);
+    } else {
+        ListenerVector& listeners = iter->second;
+        for (ListenerVector::iterator listenerIter = listeners.begin(); listenerIter != listeners.end(); ++listenerIter) {
+            if (*listenerIter == eventListener)
+                return;
+        }
+        
+        listeners.append(eventListener);
+        m_eventListeners.add(eventType, listeners);
+    }    
+}
+
+void WorkerContext::removeEventListener(const AtomicString& eventType, EventListener* eventListener, bool)
+{
+    EventListenersMap::iterator iter = m_eventListeners.find(eventType);
+    if (iter == m_eventListeners.end())
+        return;
+    
+    ListenerVector& listeners = iter->second;
+    for (ListenerVector::const_iterator listenerIter = listeners.begin(); listenerIter != listeners.end(); ++listenerIter) {
+        if (*listenerIter == eventListener) {
+            listeners.remove(listenerIter - listeners.begin());
+            return;
+        }
+    }
+}
+
+bool WorkerContext::dispatchEvent(PassRefPtr<Event> event, ExceptionCode& ec)
+{
+    if (!event || event->type().isEmpty()) {
+        ec = EventException::UNSPECIFIED_EVENT_TYPE_ERR;
+        return true;
+    }
+    
+    ListenerVector listenersCopy = m_eventListeners.get(event->type());
+    for (ListenerVector::const_iterator listenerIter = listenersCopy.begin(); listenerIter != listenersCopy.end(); ++listenerIter) {
+        event->setTarget(this);
+        event->setCurrentTarget(this);
+        listenerIter->get()->handleEvent(event.get(), false);
+    }
+    
+    return !event->defaultPrevented();
+}
+
+void WorkerContext::postTask(PassRefPtr<Task> task)
+{
+    thread()->runLoop().postTask(task);
+}
+
+int WorkerContext::installTimeout(ScheduledAction* action, int timeout, bool singleShot)
+{
+    return DOMTimer::install(scriptExecutionContext(), action, timeout, singleShot);
+}
+
+void WorkerContext::removeTimeout(int timeoutId)
+{
+    DOMTimer::removeById(scriptExecutionContext(), timeoutId);
+}
+
+void WorkerContext::dispatchMessage(const String& message)
+{
+    RefPtr<Event> evt = MessageEvent::create(message, "", "", 0, 0);
+
+    if (m_onmessageListener.get()) {
+        evt->setTarget(this);
+        evt->setCurrentTarget(this);
+        m_onmessageListener->handleEvent(evt.get(), false);
+    }
+
+    ExceptionCode ec = 0;
+    dispatchEvent(evt.release(), ec);
+    ASSERT(!ec);
+}
+
+void WorkerContext::importScripts(const Vector<String>& urls, const String& callerURL, int callerLine, ExceptionCode& ec)
+{
+    ec = 0;
+    Vector<String>::const_iterator urlsEnd = urls.end();
+    Vector<KURL> completedURLs;
+    for (Vector<String>::const_iterator it = urls.begin(); it != urlsEnd; ++it) {
+        const KURL& url = scriptExecutionContext()->completeURL(*it);
+        if (!url.isValid()) {
+            ec = SYNTAX_ERR;
+            return;
+        }
+        completedURLs.append(url);
+    }
+    String securityOrigin = scriptExecutionContext()->securityOrigin()->toString();
+    Vector<KURL>::const_iterator end = completedURLs.end();
+
+    for (Vector<KURL>::const_iterator it = completedURLs.begin(); it != end; ++it) {
+        ResourceRequest request(*it);
+        request.setHTTPMethod("GET");
+        request.setHTTPOrigin(securityOrigin);
+        WorkerImportScriptsClient client(scriptExecutionContext(), *it, callerURL, callerLine);
+        ThreadableLoader::loadResourceSynchronously(scriptExecutionContext(), request, client);
+        
+        // If the fetching attempt failed, throw a NETWORK_ERR exception and abort all these steps.
+        if (client.failed()) {
+            ec = XMLHttpRequestException::NETWORK_ERR;
+            return;
+        }
+
+        ScriptValue exception;
+        m_script->evaluate(ScriptSourceCode(client.script(), *it), &exception);
+        if (!exception.hasNoValue()) {
+            m_script->setException(exception);
+            return;
+        }
+    }
+}
+
+} // namespace WebCore
+
+#endif // ENABLE(WORKERS)