diff -r 000000000000 -r 4f2f89ce4247 WebCore/page/DOMWindow.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/page/DOMWindow.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,1550 @@
+/*
+ * Copyright (C) 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 "config.h"
+#include "DOMWindow.h"
+
+#include "AbstractDatabase.h"
+#include "Base64.h"
+#include "BarInfo.h"
+#include "BeforeUnloadEvent.h"
+#include "CSSComputedStyleDeclaration.h"
+#include "CSSRuleList.h"
+#include "CSSStyleSelector.h"
+#include "Chrome.h"
+#include "Console.h"
+#include "DocumentLoader.h"
+#include "DOMApplicationCache.h"
+#include "DOMSelection.h"
+#include "DOMTimer.h"
+#include "Database.h"
+#include "DatabaseCallback.h"
+#include "DeviceOrientationController.h"
+#include "PageTransitionEvent.h"
+#include "Document.h"
+#include "Element.h"
+#include "EventException.h"
+#include "EventListener.h"
+#include "EventNames.h"
+#include "ExceptionCode.h"
+#include "FloatRect.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameTree.h"
+#include "FrameView.h"
+#include "HTMLFrameOwnerElement.h"
+#include "History.h"
+#include "IndexedDatabase.h"
+#include "IndexedDatabaseRequest.h"
+#include "InspectorController.h"
+#include "InspectorTimelineAgent.h"
+#include "Location.h"
+#include "StyleMedia.h"
+#include "MessageEvent.h"
+#include "Navigator.h"
+#include "NotificationCenter.h"
+#include "Page.h"
+#include "PageGroup.h"
+#include "Performance.h"
+#include "PlatformScreen.h"
+#include "PlatformString.h"
+#include "Screen.h"
+#include "SecurityOrigin.h"
+#include "SerializedScriptValue.h"
+#include "Settings.h"
+#include "Storage.h"
+#include "StorageArea.h"
+#include "StorageNamespace.h"
+#include "SuddenTermination.h"
+#include "WebKitPoint.h"
+#include <algorithm>
+#include <wtf/CurrentTime.h>
+#include <wtf/MathExtras.h>
+#include <wtf/text/CString.h>
+
+using std::min;
+using std::max;
+
+namespace WebCore {
+
+class PostMessageTimer : public TimerBase {
+public:
+    PostMessageTimer(DOMWindow* window, PassRefPtr<SerializedScriptValue> message, const String& sourceOrigin, PassRefPtr<DOMWindow> source, PassOwnPtr<MessagePortChannelArray> channels, SecurityOrigin* targetOrigin)
+        : m_window(window)
+        , m_message(message)
+        , m_origin(sourceOrigin)
+        , m_source(source)
+        , m_channels(channels)
+        , m_targetOrigin(targetOrigin)
+    {
+    }
+
+    PassRefPtr<MessageEvent> event(ScriptExecutionContext* context)
+    {
+        OwnPtr<MessagePortArray> messagePorts = MessagePort::entanglePorts(*context, m_channels.release());
+        return MessageEvent::create(messagePorts.release(), m_message, m_origin, "", m_source);
+    }
+    SecurityOrigin* targetOrigin() const { return m_targetOrigin.get(); }
+
+private:
+    virtual void fired()
+    {
+        m_window->postMessageTimerFired(this);
+    }
+
+    RefPtr<DOMWindow> m_window;
+    RefPtr<SerializedScriptValue> m_message;
+    String m_origin;
+    RefPtr<DOMWindow> m_source;
+    OwnPtr<MessagePortChannelArray> m_channels;
+    RefPtr<SecurityOrigin> m_targetOrigin;
+};
+
+typedef HashCountedSet<DOMWindow*> DOMWindowSet;
+
+static DOMWindowSet& windowsWithUnloadEventListeners()
+{
+    DEFINE_STATIC_LOCAL(DOMWindowSet, windowsWithUnloadEventListeners, ());
+    return windowsWithUnloadEventListeners;
+}
+
+static DOMWindowSet& windowsWithBeforeUnloadEventListeners()
+{
+    DEFINE_STATIC_LOCAL(DOMWindowSet, windowsWithBeforeUnloadEventListeners, ());
+    return windowsWithBeforeUnloadEventListeners;
+}
+
+static void addUnloadEventListener(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithUnloadEventListeners();
+    if (set.isEmpty())
+        disableSuddenTermination();
+    set.add(domWindow);
+}
+
+static void removeUnloadEventListener(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithUnloadEventListeners();
+    DOMWindowSet::iterator it = set.find(domWindow);
+    if (it == set.end())
+        return;
+    set.remove(it);
+    if (set.isEmpty())
+        enableSuddenTermination();
+}
+
+static void removeAllUnloadEventListeners(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithUnloadEventListeners();
+    DOMWindowSet::iterator it = set.find(domWindow);
+    if (it == set.end())
+        return;
+    set.removeAll(it);
+    if (set.isEmpty())
+        enableSuddenTermination();
+}
+
+static void addBeforeUnloadEventListener(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithBeforeUnloadEventListeners();
+    if (set.isEmpty())
+        disableSuddenTermination();
+    set.add(domWindow);
+}
+
+static void removeBeforeUnloadEventListener(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithBeforeUnloadEventListeners();
+    DOMWindowSet::iterator it = set.find(domWindow);
+    if (it == set.end())
+        return;
+    set.remove(it);
+    if (set.isEmpty())
+        enableSuddenTermination();
+}
+
+static void removeAllBeforeUnloadEventListeners(DOMWindow* domWindow)
+{
+    DOMWindowSet& set = windowsWithBeforeUnloadEventListeners();
+    DOMWindowSet::iterator it = set.find(domWindow);
+    if (it == set.end())
+        return;
+    set.removeAll(it);
+    if (set.isEmpty())
+        enableSuddenTermination();
+}
+
+static bool allowsBeforeUnloadListeners(DOMWindow* window)
+{
+    ASSERT_ARG(window, window);
+    Frame* frame = window->frame();
+    if (!frame)
+        return false;
+    Page* page = frame->page();
+    if (!page)
+        return false;
+    return frame == page->mainFrame();
+}
+
+bool DOMWindow::dispatchAllPendingBeforeUnloadEvents()
+{
+    DOMWindowSet& set = windowsWithBeforeUnloadEventListeners();
+    if (set.isEmpty())
+        return true;
+
+    static bool alreadyDispatched = false;
+    ASSERT(!alreadyDispatched);
+    if (alreadyDispatched)
+        return true;
+
+    Vector<RefPtr<DOMWindow> > windows;
+    DOMWindowSet::iterator end = set.end();
+    for (DOMWindowSet::iterator it = set.begin(); it != end; ++it)
+        windows.append(it->first);
+
+    size_t size = windows.size();
+    for (size_t i = 0; i < size; ++i) {
+        DOMWindow* window = windows[i].get();
+        if (!set.contains(window))
+            continue;
+
+        Frame* frame = window->frame();
+        if (!frame)
+            continue;
+
+        if (!frame->loader()->shouldClose())
+            return false;
+    }
+
+    enableSuddenTermination();
+
+    alreadyDispatched = true;
+
+    return true;
+}
+
+unsigned DOMWindow::pendingUnloadEventListeners() const
+{
+    return windowsWithUnloadEventListeners().count(const_cast<DOMWindow*>(this));
+}
+
+void DOMWindow::dispatchAllPendingUnloadEvents()
+{
+    DOMWindowSet& set = windowsWithUnloadEventListeners();
+    if (set.isEmpty())
+        return;
+
+    static bool alreadyDispatched = false;
+    ASSERT(!alreadyDispatched);
+    if (alreadyDispatched)
+        return;
+
+    Vector<RefPtr<DOMWindow> > windows;
+    DOMWindowSet::iterator end = set.end();
+    for (DOMWindowSet::iterator it = set.begin(); it != end; ++it)
+        windows.append(it->first);
+
+    size_t size = windows.size();
+    for (size_t i = 0; i < size; ++i) {
+        DOMWindow* window = windows[i].get();
+        if (!set.contains(window))
+            continue;
+
+        window->dispatchEvent(PageTransitionEvent::create(eventNames().pagehideEvent, false), window->document());
+        window->dispatchEvent(Event::create(eventNames().unloadEvent, false, false), window->document());
+    }
+
+    enableSuddenTermination();
+
+    alreadyDispatched = true;
+}
+
+// This function:
+// 1) Validates the pending changes are not changing to NaN
+// 2) Constrains the window rect to no smaller than 100 in each dimension and no
+//    bigger than the the float rect's dimensions.
+// 3) Constrain window rect to within the top and left boundaries of the screen rect
+// 4) Constraint the window rect to within the bottom and right boundaries of the
+//    screen rect.
+// 5) Translate the window rect coordinates to be within the coordinate space of
+//    the screen rect.
+void DOMWindow::adjustWindowRect(const FloatRect& screen, FloatRect& window, const FloatRect& pendingChanges)
+{
+    // Make sure we're in a valid state before adjusting dimensions.
+    ASSERT(isfinite(screen.x()));
+    ASSERT(isfinite(screen.y()));
+    ASSERT(isfinite(screen.width()));
+    ASSERT(isfinite(screen.height()));
+    ASSERT(isfinite(window.x()));
+    ASSERT(isfinite(window.y()));
+    ASSERT(isfinite(window.width()));
+    ASSERT(isfinite(window.height()));
+    
+    // Update window values if new requested values are not NaN.
+    if (!isnan(pendingChanges.x()))
+        window.setX(pendingChanges.x());
+    if (!isnan(pendingChanges.y()))
+        window.setY(pendingChanges.y());
+    if (!isnan(pendingChanges.width()))
+        window.setWidth(pendingChanges.width());
+    if (!isnan(pendingChanges.height()))
+        window.setHeight(pendingChanges.height());
+    
+    // Resize the window to between 100 and the screen width and height.
+    window.setWidth(min(max(100.0f, window.width()), screen.width()));
+    window.setHeight(min(max(100.0f, window.height()), screen.height()));
+    
+    // Constrain the window position to the screen.
+    window.setX(max(screen.x(), min(window.x(), screen.right() - window.width())));
+    window.setY(max(screen.y(), min(window.y(), screen.bottom() - window.height())));
+}
+
+void DOMWindow::parseModalDialogFeatures(const String& featuresArg, HashMap<String, String>& map)
+{
+    Vector<String> features;
+    featuresArg.split(';', features);
+    Vector<String>::const_iterator end = features.end();
+    for (Vector<String>::const_iterator it = features.begin(); it != end; ++it) {
+        String s = *it;
+        int pos = s.find('=');
+        int colonPos = s.find(':');
+        if (pos >= 0 && colonPos >= 0)
+            continue; // ignore any strings that have both = and :
+        if (pos < 0)
+            pos = colonPos;
+        if (pos < 0) {
+            // null string for value means key without value
+            map.set(s.stripWhiteSpace().lower(), String());
+        } else {
+            String key = s.left(pos).stripWhiteSpace().lower();
+            String val = s.substring(pos + 1).stripWhiteSpace().lower();
+            int spacePos = val.find(' ');
+            if (spacePos != -1)
+                val = val.left(spacePos);
+            map.set(key, val);
+        }
+    }
+}
+
+bool DOMWindow::allowPopUp(Frame* activeFrame)
+{
+    ASSERT(activeFrame);
+    Settings* settings = activeFrame->settings();
+    return settings && settings->javaScriptCanOpenWindowsAutomatically();
+}
+
+bool DOMWindow::canShowModalDialog(const Frame* frame)
+{
+    if (!frame)
+        return false;
+    Page* page = frame->page();
+    if (!page)
+        return false;
+    return page->chrome()->canRunModal();
+}
+
+bool DOMWindow::canShowModalDialogNow(const Frame* frame)
+{
+    if (!frame)
+        return false;
+    Page* page = frame->page();
+    if (!page)
+        return false;
+    return page->chrome()->canRunModalNow();
+}
+
+DOMWindow::DOMWindow(Frame* frame)
+    : m_frame(frame)
+{
+}
+
+DOMWindow::~DOMWindow()
+{
+    if (m_frame)
+        m_frame->clearFormerDOMWindow(this);
+
+    removeAllUnloadEventListeners(this);
+    removeAllBeforeUnloadEventListeners(this);
+}
+
+ScriptExecutionContext* DOMWindow::scriptExecutionContext() const
+{
+    return document();
+}
+
+void DOMWindow::disconnectFrame()
+{
+    m_frame = 0;
+    clear();
+}
+
+void DOMWindow::clear()
+{
+    if (m_screen)
+        m_screen->disconnectFrame();
+    m_screen = 0;
+
+    if (m_selection)
+        m_selection->disconnectFrame();
+    m_selection = 0;
+
+    if (m_history)
+        m_history->disconnectFrame();
+    m_history = 0;
+
+    if (m_locationbar)
+        m_locationbar->disconnectFrame();
+    m_locationbar = 0;
+
+    if (m_menubar)
+        m_menubar->disconnectFrame();
+    m_menubar = 0;
+
+    if (m_personalbar)
+        m_personalbar->disconnectFrame();
+    m_personalbar = 0;
+
+    if (m_scrollbars)
+        m_scrollbars->disconnectFrame();
+    m_scrollbars = 0;
+
+    if (m_statusbar)
+        m_statusbar->disconnectFrame();
+    m_statusbar = 0;
+
+    if (m_toolbar)
+        m_toolbar->disconnectFrame();
+    m_toolbar = 0;
+
+    if (m_console)
+        m_console->disconnectFrame();
+    m_console = 0;
+
+    if (m_navigator)
+        m_navigator->disconnectFrame();
+    m_navigator = 0;
+
+#if ENABLE(WEB_TIMING)
+    if (m_performance)
+        m_performance->disconnectFrame();
+    m_performance = 0;
+#endif
+
+    if (m_location)
+        m_location->disconnectFrame();
+    m_location = 0;
+
+    if (m_media)
+        m_media->disconnectFrame();
+    m_media = 0;
+    
+#if ENABLE(DOM_STORAGE)
+    if (m_sessionStorage)
+        m_sessionStorage->disconnectFrame();
+    m_sessionStorage = 0;
+
+    if (m_localStorage)
+        m_localStorage->disconnectFrame();
+    m_localStorage = 0;
+#endif
+
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+    if (m_applicationCache)
+        m_applicationCache->disconnectFrame();
+    m_applicationCache = 0;
+#endif
+
+#if ENABLE(NOTIFICATIONS)
+    if (m_notifications)
+        m_notifications->disconnectFrame();
+    m_notifications = 0;
+#endif
+
+#if ENABLE(INDEXED_DATABASE)
+    m_indexedDatabaseRequest = 0;
+#endif
+}
+
+#if ENABLE(ORIENTATION_EVENTS)
+int DOMWindow::orientation() const
+{
+    if (!m_frame)
+        return 0;
+    
+    return m_frame->orientation();
+}
+#endif
+
+Screen* DOMWindow::screen() const
+{
+    if (!m_screen)
+        m_screen = Screen::create(m_frame);
+    return m_screen.get();
+}
+
+History* DOMWindow::history() const
+{
+    if (!m_history)
+        m_history = History::create(m_frame);
+    return m_history.get();
+}
+
+BarInfo* DOMWindow::locationbar() const
+{
+    if (!m_locationbar)
+        m_locationbar = BarInfo::create(m_frame, BarInfo::Locationbar);
+    return m_locationbar.get();
+}
+
+BarInfo* DOMWindow::menubar() const
+{
+    if (!m_menubar)
+        m_menubar = BarInfo::create(m_frame, BarInfo::Menubar);
+    return m_menubar.get();
+}
+
+BarInfo* DOMWindow::personalbar() const
+{
+    if (!m_personalbar)
+        m_personalbar = BarInfo::create(m_frame, BarInfo::Personalbar);
+    return m_personalbar.get();
+}
+
+BarInfo* DOMWindow::scrollbars() const
+{
+    if (!m_scrollbars)
+        m_scrollbars = BarInfo::create(m_frame, BarInfo::Scrollbars);
+    return m_scrollbars.get();
+}
+
+BarInfo* DOMWindow::statusbar() const
+{
+    if (!m_statusbar)
+        m_statusbar = BarInfo::create(m_frame, BarInfo::Statusbar);
+    return m_statusbar.get();
+}
+
+BarInfo* DOMWindow::toolbar() const
+{
+    if (!m_toolbar)
+        m_toolbar = BarInfo::create(m_frame, BarInfo::Toolbar);
+    return m_toolbar.get();
+}
+
+Console* DOMWindow::console() const
+{
+    if (!m_console)
+        m_console = Console::create(m_frame);
+    return m_console.get();
+}
+
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+DOMApplicationCache* DOMWindow::applicationCache() const
+{
+    if (!m_applicationCache)
+        m_applicationCache = DOMApplicationCache::create(m_frame);
+    return m_applicationCache.get();
+}
+#endif
+
+Navigator* DOMWindow::navigator() const
+{
+    if (!m_navigator)
+        m_navigator = Navigator::create(m_frame);
+    return m_navigator.get();
+}
+
+#if ENABLE(WEB_TIMING)
+Performance* DOMWindow::webkitPerformance() const
+{
+    if (!m_performance)
+        m_performance = Performance::create(m_frame);
+    return m_performance.get();
+}
+#endif
+
+Location* DOMWindow::location() const
+{
+    if (!m_location)
+        m_location = Location::create(m_frame);
+    return m_location.get();
+}
+
+#if ENABLE(DOM_STORAGE)
+Storage* DOMWindow::sessionStorage(ExceptionCode& ec) const
+{
+    if (m_sessionStorage)
+        return m_sessionStorage.get();
+
+    Document* document = this->document();
+    if (!document)
+        return 0;
+
+    if (!document->securityOrigin()->canAccessLocalStorage()) {
+        ec = SECURITY_ERR;
+        return 0;
+    }
+
+    Page* page = document->page();
+    if (!page)
+        return 0;
+
+    RefPtr<StorageArea> storageArea = page->sessionStorage()->storageArea(document->securityOrigin());
+#if ENABLE(INSPECTOR)
+    page->inspectorController()->didUseDOMStorage(storageArea.get(), false, m_frame);
+#endif
+
+    m_sessionStorage = Storage::create(m_frame, storageArea.release());
+    return m_sessionStorage.get();
+}
+
+Storage* DOMWindow::localStorage(ExceptionCode& ec) const
+{
+    if (m_localStorage)
+        return m_localStorage.get();
+
+    Document* document = this->document();
+    if (!document)
+        return 0;
+
+    if (!document->securityOrigin()->canAccessLocalStorage()) {
+        ec = SECURITY_ERR;
+        return 0;
+    }
+
+    Page* page = document->page();
+    if (!page)
+        return 0;
+
+    if (!page->settings()->localStorageEnabled())
+        return 0;
+
+    RefPtr<StorageArea> storageArea = page->group().localStorage()->storageArea(document->securityOrigin());
+#if ENABLE(INSPECTOR)
+    page->inspectorController()->didUseDOMStorage(storageArea.get(), true, m_frame);
+#endif
+
+    m_localStorage = Storage::create(m_frame, storageArea.release());
+    return m_localStorage.get();
+}
+#endif
+
+#if ENABLE(NOTIFICATIONS)
+NotificationCenter* DOMWindow::webkitNotifications() const
+{
+    if (m_notifications)
+        return m_notifications.get();
+
+    Document* document = this->document();
+    if (!document)
+        return 0;
+    
+    Page* page = document->page();
+    if (!page)
+        return 0;
+
+    NotificationPresenter* provider = page->chrome()->notificationPresenter();
+    if (provider) 
+        m_notifications = NotificationCenter::create(document, provider);    
+      
+    return m_notifications.get();
+}
+#endif
+
+void DOMWindow::pageDestroyed()
+{
+#if ENABLE(NOTIFICATIONS)
+    // Clearing Notifications requests involves accessing the client so it must be done
+    // before the frame is detached.
+    if (m_notifications)
+        m_notifications->disconnectFrame();
+    m_notifications = 0;
+#endif
+}
+
+#if ENABLE(INDEXED_DATABASE)
+IndexedDatabaseRequest* DOMWindow::indexedDB() const
+{
+    if (m_indexedDatabaseRequest)
+        return m_indexedDatabaseRequest.get();
+
+    Document* document = this->document();
+    if (!document)
+        return 0;
+
+    // FIXME: See if access is allowed.
+
+    Page* page = document->page();
+    if (!page)
+        return 0;
+
+    // FIXME: See if indexedDatabase access is allowed.
+
+    m_indexedDatabaseRequest = IndexedDatabaseRequest::create(page->group().indexedDatabase());
+    return m_indexedDatabaseRequest.get();
+}
+#endif
+
+void DOMWindow::postMessage(PassRefPtr<SerializedScriptValue> message, MessagePort* port, const String& targetOrigin, DOMWindow* source, ExceptionCode& ec)
+{
+    MessagePortArray ports;
+    if (port)
+        ports.append(port);
+    postMessage(message, &ports, targetOrigin, source, ec);
+}
+
+void DOMWindow::postMessage(PassRefPtr<SerializedScriptValue> message, const MessagePortArray* ports, const String& targetOrigin, DOMWindow* source, ExceptionCode& ec)
+{
+    if (!m_frame)
+        return;
+
+    // Compute the target origin.  We need to do this synchronously in order
+    // to generate the SYNTAX_ERR exception correctly.
+    RefPtr<SecurityOrigin> target;
+    if (targetOrigin != "*") {
+        target = SecurityOrigin::createFromString(targetOrigin);
+        if (target->isEmpty()) {
+            ec = SYNTAX_ERR;
+            return;
+        }
+    }
+
+    OwnPtr<MessagePortChannelArray> channels = MessagePort::disentanglePorts(ports, ec);
+    if (ec)
+        return;
+
+    // Capture the source of the message.  We need to do this synchronously
+    // in order to capture the source of the message correctly.
+    Document* sourceDocument = source->document();
+    if (!sourceDocument)
+        return;
+    String sourceOrigin = sourceDocument->securityOrigin()->toString();
+
+    // Schedule the message.
+    PostMessageTimer* timer = new PostMessageTimer(this, message, sourceOrigin, source, channels.release(), target.get());
+    timer->startOneShot(0);
+}
+
+void DOMWindow::postMessageTimerFired(PostMessageTimer* t)
+{
+    OwnPtr<PostMessageTimer> timer(t);
+
+    if (!document())
+        return;
+
+    if (timer->targetOrigin()) {
+        // Check target origin now since the target document may have changed since the simer was scheduled.
+        if (!timer->targetOrigin()->isSameSchemeHostPort(document()->securityOrigin())) {
+            String message = String::format("Unable to post message to %s. Recipient has origin %s.\n", 
+                timer->targetOrigin()->toString().utf8().data(), document()->securityOrigin()->toString().utf8().data());
+            console()->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, message, 0, String());
+            return;
+        }
+    }
+
+    dispatchEvent(timer->event(document()));
+}
+
+DOMSelection* DOMWindow::getSelection()
+{
+    if (!m_selection)
+        m_selection = DOMSelection::create(m_frame);
+    return m_selection.get();
+}
+
+Element* DOMWindow::frameElement() const
+{
+    if (!m_frame)
+        return 0;
+
+    return m_frame->ownerElement();
+}
+
+void DOMWindow::focus()
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    // If we're a top level window, bring the window to the front.
+    if (m_frame == page->mainFrame())
+        page->chrome()->focus();
+
+    if (!m_frame)
+        return;
+
+    m_frame->eventHandler()->focusDocumentView();
+}
+
+void DOMWindow::blur()
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    page->chrome()->unfocus();
+}
+
+void DOMWindow::close()
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    Settings* settings = m_frame->settings();
+    bool allowScriptsToCloseWindows = settings && settings->allowScriptsToCloseWindows();
+
+    if (!(page->openedByDOM() || page->getHistoryLength() <= 1 || allowScriptsToCloseWindows))
+        return;
+
+    if (!m_frame->loader()->shouldClose())
+        return;
+
+    page->chrome()->closeWindowSoon();
+}
+
+void DOMWindow::print()
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    page->chrome()->print(m_frame);
+}
+
+void DOMWindow::stop()
+{
+    if (!m_frame)
+        return;
+
+    // We must check whether the load is complete asynchronously, because we might still be parsing
+    // the document until the callstack unwinds.
+    m_frame->loader()->stopForUserCancel(true);
+}
+
+void DOMWindow::alert(const String& message)
+{
+    if (!m_frame)
+        return;
+
+    m_frame->document()->updateStyleIfNeeded();
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    page->chrome()->runJavaScriptAlert(m_frame, message);
+}
+
+bool DOMWindow::confirm(const String& message)
+{
+    if (!m_frame)
+        return false;
+
+    m_frame->document()->updateStyleIfNeeded();
+
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+
+    return page->chrome()->runJavaScriptConfirm(m_frame, message);
+}
+
+String DOMWindow::prompt(const String& message, const String& defaultValue)
+{
+    if (!m_frame)
+        return String();
+
+    m_frame->document()->updateStyleIfNeeded();
+
+    Page* page = m_frame->page();
+    if (!page)
+        return String();
+
+    String returnValue;
+    if (page->chrome()->runJavaScriptPrompt(m_frame, message, defaultValue, returnValue))
+        return returnValue;
+
+    return String();
+}
+
+static bool isSafeToConvertCharList(const String& string)
+{
+    for (unsigned i = 0; i < string.length(); i++) {
+        if (string[i] > 0xFF)
+            return false;
+    }
+
+    return true;
+}
+
+String DOMWindow::btoa(const String& stringToEncode, ExceptionCode& ec)
+{
+    if (stringToEncode.isNull())
+        return String();
+
+    if (!isSafeToConvertCharList(stringToEncode)) {
+        ec = INVALID_CHARACTER_ERR;
+        return String();
+    }
+
+    Vector<char> in;
+    in.append(stringToEncode.characters(), stringToEncode.length());
+    Vector<char> out;
+
+    base64Encode(in, out);
+
+    return String(out.data(), out.size());
+}
+
+String DOMWindow::atob(const String& encodedString, ExceptionCode& ec)
+{
+    if (encodedString.isNull())
+        return String();
+
+    if (!isSafeToConvertCharList(encodedString)) {
+        ec = INVALID_CHARACTER_ERR;
+        return String();
+    }
+
+    Vector<char> in;
+    in.append(encodedString.characters(), encodedString.length());
+    Vector<char> out;
+
+    if (!base64Decode(in, out)) {
+        ec = INVALID_CHARACTER_ERR;
+        return String();
+    }
+
+    return String(out.data(), out.size());
+}
+
+bool DOMWindow::find(const String& string, bool caseSensitive, bool backwards, bool wrap, bool /*wholeWord*/, bool /*searchInFrames*/, bool /*showDialog*/) const
+{
+    if (!m_frame)
+        return false;
+
+    // FIXME (13016): Support wholeWord, searchInFrames and showDialog
+    return m_frame->findString(string, !backwards, caseSensitive, wrap, false);
+}
+
+bool DOMWindow::offscreenBuffering() const
+{
+    return true;
+}
+
+int DOMWindow::outerHeight() const
+{
+    if (!m_frame)
+        return 0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0;
+
+    return static_cast<int>(page->chrome()->windowRect().height());
+}
+
+int DOMWindow::outerWidth() const
+{
+    if (!m_frame)
+        return 0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0;
+
+    return static_cast<int>(page->chrome()->windowRect().width());
+}
+
+int DOMWindow::innerHeight() const
+{
+    if (!m_frame)
+        return 0;
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return 0;
+    
+    return static_cast<int>(view->height() / view->pageZoomFactor());
+}
+
+int DOMWindow::innerWidth() const
+{
+    if (!m_frame)
+        return 0;
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return 0;
+
+    return static_cast<int>(view->width() / view->pageZoomFactor());
+}
+
+int DOMWindow::screenX() const
+{
+    if (!m_frame)
+        return 0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0;
+
+    return static_cast<int>(page->chrome()->windowRect().x());
+}
+
+int DOMWindow::screenY() const
+{
+    if (!m_frame)
+        return 0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0;
+
+    return static_cast<int>(page->chrome()->windowRect().y());
+}
+
+int DOMWindow::scrollX() const
+{
+    if (!m_frame)
+        return 0;
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return 0;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    return static_cast<int>(view->scrollX() / view->pageZoomFactor());
+}
+
+int DOMWindow::scrollY() const
+{
+    if (!m_frame)
+        return 0;
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return 0;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    return static_cast<int>(view->scrollY() / view->pageZoomFactor());
+}
+
+bool DOMWindow::closed() const
+{
+    return !m_frame;
+}
+
+unsigned DOMWindow::length() const
+{
+    if (!m_frame)
+        return 0;
+
+    return m_frame->tree()->childCount();
+}
+
+String DOMWindow::name() const
+{
+    if (!m_frame)
+        return String();
+
+    return m_frame->tree()->name();
+}
+
+void DOMWindow::setName(const String& string)
+{
+    if (!m_frame)
+        return;
+
+    m_frame->tree()->setName(string);
+}
+
+void DOMWindow::setStatus(const String& string) 
+{
+    m_status = string;
+
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    ASSERT(m_frame->document()); // Client calls shouldn't be made when the frame is in inconsistent state.
+    page->chrome()->setStatusbarText(m_frame, m_status);
+} 
+    
+void DOMWindow::setDefaultStatus(const String& string) 
+{
+    m_defaultStatus = string;
+
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    ASSERT(m_frame->document()); // Client calls shouldn't be made when the frame is in inconsistent state.
+    page->chrome()->setStatusbarText(m_frame, m_defaultStatus);
+}
+
+DOMWindow* DOMWindow::self() const
+{
+    if (!m_frame)
+        return 0;
+
+    return m_frame->domWindow();
+}
+
+DOMWindow* DOMWindow::opener() const
+{
+    if (!m_frame)
+        return 0;
+
+    Frame* opener = m_frame->loader()->opener();
+    if (!opener)
+        return 0;
+
+    return opener->domWindow();
+}
+
+DOMWindow* DOMWindow::parent() const
+{
+    if (!m_frame)
+        return 0;
+
+    Frame* parent = m_frame->tree()->parent(true);
+    if (parent)
+        return parent->domWindow();
+
+    return m_frame->domWindow();
+}
+
+DOMWindow* DOMWindow::top() const
+{
+    if (!m_frame)
+        return 0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0;
+
+    return m_frame->tree()->top(true)->domWindow();
+}
+
+Document* DOMWindow::document() const
+{
+    // FIXME: This function shouldn't need a frame to work.
+    if (!m_frame)
+        return 0;
+
+    // The m_frame pointer is not zeroed out when the window is put into b/f cache, so it can hold an unrelated document/window pair.
+    // FIXME: We should always zero out the frame pointer on navigation to avoid accidentally accessing the new frame content.
+    if (m_frame->domWindow() != this)
+        return 0;
+
+    ASSERT(m_frame->document());
+    return m_frame->document();
+}
+
+PassRefPtr<StyleMedia> DOMWindow::styleMedia() const
+{
+    if (!m_media)
+        m_media = StyleMedia::create(m_frame);
+    return m_media.get();
+}
+
+PassRefPtr<CSSStyleDeclaration> DOMWindow::getComputedStyle(Element* elt, const String& pseudoElt) const
+{
+    if (!elt)
+        return 0;
+
+    return computedStyle(elt, false, pseudoElt);
+}
+
+PassRefPtr<CSSRuleList> DOMWindow::getMatchedCSSRules(Element* elt, const String&, bool authorOnly) const
+{
+    if (!m_frame)
+        return 0;
+
+    Document* doc = m_frame->document();
+    return doc->styleSelector()->styleRulesForElement(elt, authorOnly);
+}
+
+PassRefPtr<WebKitPoint> DOMWindow::webkitConvertPointFromNodeToPage(Node* node, const WebKitPoint* p) const
+{
+    if (!node || !p)
+        return 0;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    FloatPoint pagePoint(p->x(), p->y());
+    pagePoint = node->convertToPage(pagePoint);
+    return WebKitPoint::create(pagePoint.x(), pagePoint.y());
+}
+
+PassRefPtr<WebKitPoint> DOMWindow::webkitConvertPointFromPageToNode(Node* node, const WebKitPoint* p) const
+{
+    if (!node || !p)
+        return 0;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    FloatPoint nodePoint(p->x(), p->y());
+    nodePoint = node->convertFromPage(nodePoint);
+    return WebKitPoint::create(nodePoint.x(), nodePoint.y());
+}
+
+double DOMWindow::devicePixelRatio() const
+{
+    if (!m_frame)
+        return 0.0;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return 0.0;
+
+    return page->chrome()->scaleFactor();
+}
+
+#if ENABLE(DATABASE)
+PassRefPtr<Database> DOMWindow::openDatabase(const String& name, const String& version, const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback> creationCallback, ExceptionCode& ec)
+{
+    RefPtr<Database> database = 0;
+    if (m_frame && AbstractDatabase::isAvailable() && m_frame->document()->securityOrigin()->canAccessDatabase())
+        database = Database::openDatabase(m_frame->document(), name, version, displayName, estimatedSize, creationCallback, ec);
+
+    if (!database && !ec)
+        ec = SECURITY_ERR;
+
+    return database;
+}
+#endif
+
+void DOMWindow::scrollBy(int x, int y) const
+{
+    if (!m_frame)
+        return;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return;
+
+    view->scrollBy(IntSize(x, y));
+}
+
+void DOMWindow::scrollTo(int x, int y) const
+{
+    if (!m_frame)
+        return;
+
+    m_frame->document()->updateLayoutIgnorePendingStylesheets();
+
+    FrameView* view = m_frame->view();
+    if (!view)
+        return;
+
+    int zoomedX = static_cast<int>(x * view->pageZoomFactor());
+    int zoomedY = static_cast<int>(y * view->pageZoomFactor());
+    view->setScrollPosition(IntPoint(zoomedX, zoomedY));
+}
+
+void DOMWindow::moveBy(float x, float y) const
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    FloatRect fr = page->chrome()->windowRect();
+    FloatRect update = fr;
+    update.move(x, y);
+    // Security check (the spec talks about UniversalBrowserWrite to disable this check...)
+    adjustWindowRect(screenAvailableRect(page->mainFrame()->view()), fr, update);
+    page->chrome()->setWindowRect(fr);
+}
+
+void DOMWindow::moveTo(float x, float y) const
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    FloatRect fr = page->chrome()->windowRect();
+    FloatRect sr = screenAvailableRect(page->mainFrame()->view());
+    fr.setLocation(sr.location());
+    FloatRect update = fr;
+    update.move(x, y);     
+    // Security check (the spec talks about UniversalBrowserWrite to disable this check...)
+    adjustWindowRect(sr, fr, update);
+    page->chrome()->setWindowRect(fr);
+}
+
+void DOMWindow::resizeBy(float x, float y) const
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    FloatRect fr = page->chrome()->windowRect();
+    FloatSize dest = fr.size() + FloatSize(x, y);
+    FloatRect update(fr.location(), dest);
+    adjustWindowRect(screenAvailableRect(page->mainFrame()->view()), fr, update);
+    page->chrome()->setWindowRect(fr);
+}
+
+void DOMWindow::resizeTo(float width, float height) const
+{
+    if (!m_frame)
+        return;
+
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (m_frame != page->mainFrame())
+        return;
+
+    FloatRect fr = page->chrome()->windowRect();
+    FloatSize dest = FloatSize(width, height);
+    FloatRect update(fr.location(), dest);
+    adjustWindowRect(screenAvailableRect(page->mainFrame()->view()), fr, update);
+    page->chrome()->setWindowRect(fr);
+}
+
+int DOMWindow::setTimeout(PassOwnPtr<ScheduledAction> action, int timeout, ExceptionCode& ec)
+{
+    ScriptExecutionContext* context = scriptExecutionContext();
+    if (!context) {
+        ec = INVALID_ACCESS_ERR;
+        return -1;
+    }
+    return DOMTimer::install(context, action, timeout, true);
+}
+
+void DOMWindow::clearTimeout(int timeoutId)
+{
+    ScriptExecutionContext* context = scriptExecutionContext();
+    if (!context)
+        return;
+    DOMTimer::removeById(context, timeoutId);
+}
+
+int DOMWindow::setInterval(PassOwnPtr<ScheduledAction> action, int timeout, ExceptionCode& ec)
+{
+    ScriptExecutionContext* context = scriptExecutionContext();
+    if (!context) {
+        ec = INVALID_ACCESS_ERR;
+        return -1;
+    }
+    return DOMTimer::install(context, action, timeout, false);
+}
+
+void DOMWindow::clearInterval(int timeoutId)
+{
+    ScriptExecutionContext* context = scriptExecutionContext();
+    if (!context)
+        return;
+    DOMTimer::removeById(context, timeoutId);
+}
+
+bool DOMWindow::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
+{
+    if (!EventTarget::addEventListener(eventType, listener, useCapture))
+        return false;
+
+    if (Document* document = this->document())
+        document->addListenerTypeIfNeeded(eventType);
+
+    if (eventType == eventNames().unloadEvent)
+        addUnloadEventListener(this);
+    else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
+        addBeforeUnloadEventListener(this);
+#if ENABLE(DEVICE_ORIENTATION)
+    else if (eventType == eventNames().deviceorientationEvent && frame() && frame()->page() && frame()->page()->deviceOrientationController())
+        frame()->page()->deviceOrientationController()->addListener(this);
+#endif
+
+    return true;
+}
+
+bool DOMWindow::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
+{
+    if (!EventTarget::removeEventListener(eventType, listener, useCapture))
+        return false;
+
+    if (eventType == eventNames().unloadEvent)
+        removeUnloadEventListener(this);
+    else if (eventType == eventNames().beforeunloadEvent && allowsBeforeUnloadListeners(this))
+        removeBeforeUnloadEventListener(this);
+#if ENABLE(DEVICE_ORIENTATION)
+    else if (eventType == eventNames().deviceorientationEvent && frame() && frame()->page() && frame()->page()->deviceOrientationController())
+        frame()->page()->deviceOrientationController()->removeListener(this);
+#endif
+
+    return true;
+}
+
+void DOMWindow::dispatchLoadEvent()
+{
+    if (DocumentLoader* documentLoader = m_frame ? m_frame->loader()->documentLoader() : 0)
+        documentLoader->timing()->loadEventStart = currentTime();
+    dispatchEvent(Event::create(eventNames().loadEvent, false, false), document());
+    if (DocumentLoader* documentLoader = m_frame ? m_frame->loader()->documentLoader() : 0)
+        documentLoader->timing()->loadEventEnd = currentTime();
+
+    // For load events, send a separate load event to the enclosing frame only.
+    // This is a DOM extension and is independent of bubbling/capturing rules of
+    // the DOM.
+    Element* ownerElement = document()->ownerElement();
+    if (ownerElement) {
+        RefPtr<Event> ownerEvent = Event::create(eventNames().loadEvent, false, false);
+        ownerEvent->setTarget(ownerElement);
+        ownerElement->dispatchGenericEvent(ownerEvent.release());
+    }
+
+#if ENABLE(INSPECTOR)
+    if (!frame() || !frame()->page())
+        return;
+
+    if (InspectorController* controller = frame()->page()->inspectorController())
+        controller->mainResourceFiredLoadEvent(frame()->loader()->documentLoader(), url());
+#endif
+}
+
+#if ENABLE(INSPECTOR)
+InspectorTimelineAgent* DOMWindow::inspectorTimelineAgent() 
+{
+    if (frame() && frame()->page())
+        return frame()->page()->inspectorTimelineAgent();
+    return 0;
+}
+#endif
+
+bool DOMWindow::dispatchEvent(PassRefPtr<Event> prpEvent, PassRefPtr<EventTarget> prpTarget)
+{
+    RefPtr<EventTarget> protect = this;
+    RefPtr<Event> event = prpEvent;
+
+    event->setTarget(prpTarget ? prpTarget : this);
+    event->setCurrentTarget(this);
+    event->setEventPhase(Event::AT_TARGET);
+
+#if ENABLE(INSPECTOR)
+    Page* inspectedPage = InspectorTimelineAgent::instanceCount() && frame() ? frame()->page() : 0;
+    if (inspectedPage) {
+        if (InspectorTimelineAgent* timelineAgent = hasEventListeners(event->type()) ? inspectedPage->inspectorTimelineAgent() : 0)
+            timelineAgent->willDispatchEvent(*event);
+        else
+            inspectedPage = 0;
+    }
+#endif
+
+    bool result = fireEventListeners(event.get());
+
+#if ENABLE(INSPECTOR)
+    if (inspectedPage)
+        if (InspectorTimelineAgent* timelineAgent = inspectedPage->inspectorTimelineAgent())
+            timelineAgent->didDispatchEvent();
+#endif
+
+    return result;
+}
+
+void DOMWindow::removeAllEventListeners()
+{
+    EventTarget::removeAllEventListeners();
+
+#if ENABLE(DEVICE_ORIENTATION)
+    if (frame() && frame()->page() && frame()->page()->deviceOrientationController())
+        frame()->page()->deviceOrientationController()->removeAllListeners(this);
+#endif
+
+    removeAllUnloadEventListeners(this);
+    removeAllBeforeUnloadEventListeners(this);
+}
+
+void DOMWindow::captureEvents()
+{
+    // Not implemented.
+}
+
+void DOMWindow::releaseEvents()
+{
+    // Not implemented.
+}
+
+EventTargetData* DOMWindow::eventTargetData()
+{
+    return &m_eventTargetData;
+}
+
+EventTargetData* DOMWindow::ensureEventTargetData()
+{
+    return &m_eventTargetData;
+}
+
+} // namespace WebCore