/*
    Copyright (C) 2008, 2009 Nokia Corporation and/or its subsidiary(-ies)
    Copyright (C) 2007 Staikos Computing Services Inc.
    Copyright (C) 2007 Apple Inc.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#include "config.h"
#include "qwebpage.h"

#include "qwebview.h"
#include "qwebframe.h"
#include "qwebpage_p.h"
#include "qwebframe_p.h"
#include "qwebhistory.h"
#include "qwebhistory_p.h"
#include "qwebinspector.h"
#include "qwebinspector_p.h"
#include "qwebsettings.h"
#include "qwebkitplatformplugin.h"
#include "qwebkitversion.h"

#include "CSSComputedStyleDeclaration.h"
#include "CSSParser.h"
#include "ApplicationCacheStorage.h"
#include "BackForwardListImpl.h"
#include "MemoryCache.h"
#include "Chrome.h"
#include "ChromeClientQt.h"
#include "ClientRect.h"
#include "ContextMenu.h"
#include "ContextMenuClientQt.h"
#include "ContextMenuController.h"
#include "DeviceMotionClientQt.h"
#include "DeviceOrientationClientQt.h"
#include "DocumentLoader.h"
#include "DragClientQt.h"
#include "DragController.h"
#include "DragData.h"
#include "Editor.h"
#include "EditorClientQt.h"
#include "FocusController.h"
#include "FormState.h"
#include "Frame.h"
#include "FrameLoadRequest.h"
#include "FrameLoader.h"
#include "FrameLoader.h"
#include "FrameLoaderClientQt.h"
#include "FrameTree.h"
#include "FrameView.h"
#if ENABLE(CLIENT_BASED_GEOLOCATION)
#include "GeolocationClientMock.h"
#include "GeolocationClientQt.h"
#endif // CLIENT_BASED_GEOLOCATION
#include "GeolocationPermissionClientQt.h"
#include "HTMLFormElement.h"
#include "HTMLFrameOwnerElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HashMap.h"
#include "HitTestResult.h"
#include "Image.h"
#include "InspectorClientQt.h"
#include "InspectorController.h"
#include "InspectorServerQt.h"
#include "KURL.h"
#include "LocalizedStrings.h"
#include "Logging.h"
#include "MIMETypeRegistry.h"
#include "NavigationAction.h"
#include "NetworkingContext.h"
#include "NodeList.h"
#include "NotificationPresenterClientQt.h"
#include "NotImplemented.h"
#include "Page.h"
#include "PageClientQt.h"
#include "PageGroup.h"
#include "Pasteboard.h"
#include "PlatformKeyboardEvent.h"
#include "PlatformTouchEvent.h"
#include "PlatformWheelEvent.h"
#include "PluginDatabase.h"
#include "PluginDatabase.h"
#include "PluginPackage.h"
#include "ProgressTracker.h"
#include "QtPlatformPlugin.h"
#include "RefPtr.h"
#include "RenderTextControl.h"
#include "SchemeRegistry.h"
#include "Scrollbar.h"
#include "SecurityOrigin.h"
#include "Settings.h"
#if defined Q_OS_WIN32
#include "SystemInfo.h"
#endif // Q_OS_WIN32
#include "TextIterator.h"
#include "WebPlatformStrategies.h"
#if USE(QTKIT)
#include "WebSystemInterface.h"
#endif
#include "WindowFeatures.h"
#include "WorkerThread.h"
#include "runtime/InitializeThreading.h"
#include "wtf/Threading.h"

#include <QApplication>
#include <QBasicTimer>
#include <QBitArray>
#include <QDebug>
#include <QDesktopWidget>
#include <QDragEnterEvent>
#include <QDragLeaveEvent>
#include <QDragMoveEvent>
#include <QDropEvent>
#include <QFileDialog>
#include <QHttpRequestHeader>
#include <QInputDialog>
#include <QMessageBox>
#include <QNetworkProxy>
#include <QUndoStack>
#include <QUrl>
#include <QPainter>
#include <QClipboard>
#include <QSslSocket>
#include <QStyle>
#include <QSysInfo>
#include <QTextCharFormat>
#include <QTextDocument>
#include <QTouchEvent>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#if defined(Q_WS_X11)
#include <QX11Info>
#endif
#if USE(QT_MOBILITY_SYSTEMINFO)
#include <qsysteminfo.h>
#endif

using namespace WebCore;

// from text/qfont.cpp
QT_BEGIN_NAMESPACE
extern Q_GUI_EXPORT int qt_defaultDpi();
QT_END_NAMESPACE

bool QWebPagePrivate::drtRun = false;

// Lookup table mapping QWebPage::WebActions to the associated Editor commands
static const char* editorCommandWebActions[] =
{
    0, // OpenLink,

    0, // OpenLinkInNewWindow,
    0, // OpenFrameInNewWindow,

    0, // DownloadLinkToDisk,
    0, // CopyLinkToClipboard,

    0, // OpenImageInNewWindow,
    0, // DownloadImageToDisk,
    0, // CopyImageToClipboard,

    0, // Back,
    0, // Forward,
    0, // Stop,
    0, // Reload,

    "Cut", // Cut,
    "Copy", // Copy,
    "Paste", // Paste,

    "Undo", // Undo,
    "Redo", // Redo,
    "MoveForward", // MoveToNextChar,
    "MoveBackward", // MoveToPreviousChar,
    "MoveWordForward", // MoveToNextWord,
    "MoveWordBackward", // MoveToPreviousWord,
    "MoveDown", // MoveToNextLine,
    "MoveUp", // MoveToPreviousLine,
    "MoveToBeginningOfLine", // MoveToStartOfLine,
    "MoveToEndOfLine", // MoveToEndOfLine,
    "MoveToBeginningOfParagraph", // MoveToStartOfBlock,
    "MoveToEndOfParagraph", // MoveToEndOfBlock,
    "MoveToBeginningOfDocument", // MoveToStartOfDocument,
    "MoveToEndOfDocument", // MoveToEndOfDocument,
    "MoveForwardAndModifySelection", // SelectNextChar,
    "MoveBackwardAndModifySelection", // SelectPreviousChar,
    "MoveWordForwardAndModifySelection", // SelectNextWord,
    "MoveWordBackwardAndModifySelection", // SelectPreviousWord,
    "MoveDownAndModifySelection", // SelectNextLine,
    "MoveUpAndModifySelection", // SelectPreviousLine,
    "MoveToBeginningOfLineAndModifySelection", // SelectStartOfLine,
    "MoveToEndOfLineAndModifySelection", // SelectEndOfLine,
    "MoveToBeginningOfParagraphAndModifySelection", // SelectStartOfBlock,
    "MoveToEndOfParagraphAndModifySelection", // SelectEndOfBlock,
    "MoveToBeginningOfDocumentAndModifySelection", //SelectStartOfDocument,
    "MoveToEndOfDocumentAndModifySelection", // SelectEndOfDocument,
    "DeleteWordBackward", // DeleteStartOfWord,
    "DeleteWordForward", // DeleteEndOfWord,

    0, // SetTextDirectionDefault,
    0, // SetTextDirectionLeftToRight,
    0, // SetTextDirectionRightToLeft,

    "ToggleBold", // ToggleBold,
    "ToggleItalic", // ToggleItalic,
    "ToggleUnderline", // ToggleUnderline,

    0, // InspectElement,

    "InsertNewline", // InsertParagraphSeparator
    "InsertLineBreak", // InsertLineSeparator

    "SelectAll", // SelectAll
    0, // ReloadAndBypassCache,

    "PasteAndMatchStyle", // PasteAndMatchStyle
    "RemoveFormat", // RemoveFormat
    "Strikethrough", // ToggleStrikethrough,
    "Subscript", // ToggleSubscript
    "Superscript", // ToggleSuperscript
    "InsertUnorderedList", // InsertUnorderedList
    "InsertOrderedList", // InsertOrderedList
    "Indent", // Indent
    "Outdent", // Outdent,

    "AlignCenter", // AlignCenter,
    "AlignJustified", // AlignJustified,
    "AlignLeft", // AlignLeft,
    "AlignRight", // AlignRight,

    0, // StopScheduledPageRefresh,

    0, // CopyImageUrlToClipboard,

    0 // WebActionCount
};

// Lookup the appropriate editor command to use for WebAction \a action
const char* QWebPagePrivate::editorCommandForWebActions(QWebPage::WebAction action)
{
    if ((action > QWebPage::NoWebAction) && (action < int(sizeof(editorCommandWebActions) / sizeof(const char*))))
        return editorCommandWebActions[action];
    return 0;
}

static inline DragOperation dropActionToDragOp(Qt::DropActions actions)
{
    unsigned result = 0;
    if (actions & Qt::CopyAction)
        result |= DragOperationCopy;
    // DragOperationgeneric represents InternetExplorer's equivalent of Move operation,
    // hence it should be considered as "move"
    if (actions & Qt::MoveAction)
        result |= (DragOperationMove | DragOperationGeneric);
    if (actions & Qt::LinkAction)
        result |= DragOperationLink;
    if (result == (DragOperationCopy | DragOperationMove | DragOperationGeneric | DragOperationLink))
        result = DragOperationEvery;
    return (DragOperation)result;
}

static inline Qt::DropAction dragOpToDropAction(unsigned actions)
{
    Qt::DropAction result = Qt::IgnoreAction;
    if (actions & DragOperationCopy)
        result = Qt::CopyAction;
    else if (actions & DragOperationMove)
        result = Qt::MoveAction;
    // DragOperationgeneric represents InternetExplorer's equivalent of Move operation,
    // hence it should be considered as "move"
    else if (actions & DragOperationGeneric)
        result = Qt::MoveAction;
    else if (actions & DragOperationLink)
        result = Qt::LinkAction;
    return result;
}

QWebPagePrivate::QWebPagePrivate(QWebPage *qq)
    : q(qq)
    , page(0)
    , mainFrame(0)
#ifndef QT_NO_UNDOSTACK
    , undoStack(0)
#endif
    , insideOpenCall(false)
    , m_totalBytes(0)
    , m_bytesReceived()
    , clickCausedFocus(false)
    , networkManager(0)
    , forwardUnsupportedContent(false)
    , smartInsertDeleteEnabled(true)
    , selectTrailingWhitespaceEnabled(false)
    , linkPolicy(QWebPage::DontDelegateLinks)
    , viewportSize(QSize(0, 0))
    , pixelRatio(1)
#ifndef QT_NO_CONTEXTMENU
    , currentContextMenu(0)
#endif
    , settings(0)
    , useFixedLayout(false)
    , pluginFactory(0)
    , inspectorFrontend(0)
    , inspector(0)
    , inspectorIsInternalOnly(false)
    , m_lastDropAction(Qt::IgnoreAction)
{
    WebCore::InitializeLoggingChannelsIfNecessary();
    ScriptController::initializeThreading();
    WTF::initializeMainThread();
    WebCore::SecurityOrigin::setLocalLoadPolicy(WebCore::SecurityOrigin::AllowLocalLoadsForLocalAndSubstituteData);

    WebPlatformStrategies::initialize();

#if USE(QTKIT)
    InitWebCoreSystemInterface();
#endif

    Page::PageClients pageClients;
    pageClients.chromeClient = new ChromeClientQt(q);
    pageClients.contextMenuClient = new ContextMenuClientQt();
    pageClients.editorClient = new EditorClientQt(q);
    pageClients.dragClient = new DragClientQt(q);
    pageClients.inspectorClient = new InspectorClientQt(q);
#if ENABLE(DEVICE_ORIENTATION)
    pageClients.deviceOrientationClient = new DeviceOrientationClientQt(q);
    pageClients.deviceMotionClient = new DeviceMotionClientQt(q);
#endif
#if ENABLE(CLIENT_BASED_GEOLOCATION)
    if (QWebPagePrivate::drtRun)
        pageClients.geolocationClient = new GeolocationClientMock();
    else
        pageClients.geolocationClient = new GeolocationClientQt(q);
#endif
    page = new Page(pageClients);

    // By default each page is put into their own unique page group, which affects popup windows
    // and visited links. Page groups (per process only) is a feature making it possible to use
    // separate settings for each group, so that for instance an integrated browser/email reader
    // can use different settings for displaying HTML pages and HTML email. To make QtWebKit work
    // as expected out of the box, we use a default group similar to what other ports are doing.
    page->setGroupName("Default Group");

#if ENABLE(CLIENT_BASED_GEOLOCATION)
    // In case running in DumpRenderTree mode set the controller to mock provider.
    if (QWebPagePrivate::drtRun)
        static_cast<GeolocationClientMock*>(pageClients.geolocationClient)->setController(page->geolocationController());
#endif
    settings = new QWebSettings(page->settings());

    history.d = new QWebHistoryPrivate(static_cast<WebCore::BackForwardListImpl*>(page->backForwardList()));
    memset(actions, 0, sizeof(actions));

    PageGroup::setShouldTrackVisitedLinks(true);
    
#if ENABLE(NOTIFICATIONS)    
    NotificationPresenterClientQt::notificationPresenter()->addClient();
#endif
}

QWebPagePrivate::~QWebPagePrivate()
{
    if (inspector && inspectorIsInternalOnly) {
        // Since we have to delete an internal inspector,
        // call setInspector(0) directly to prevent potential crashes
        setInspector(0);
    }
#ifndef QT_NO_CONTEXTMENU
    delete currentContextMenu;
#endif
#ifndef QT_NO_UNDOSTACK
    delete undoStack;
#endif
    delete settings;
    delete page;
    
    if (inspector)
        inspector->setPage(0);

#if ENABLE(NOTIFICATIONS)
    NotificationPresenterClientQt::notificationPresenter()->removeClient();
#endif
}

WebCore::ViewportArguments QWebPagePrivate::viewportArguments()
{
    return page ? page->viewportArguments() : WebCore::ViewportArguments();
}

WebCore::Page* QWebPagePrivate::core(const QWebPage* page)
{
    return page->d->page;
}

QWebPagePrivate* QWebPagePrivate::priv(QWebPage* page)
{
    return page->d;
}

bool QWebPagePrivate::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type)
{
    if (insideOpenCall
        && frame == mainFrame)
        return true;
    return q->acceptNavigationRequest(frame, request, type);
}

void QWebPagePrivate::createMainFrame()
{
    if (!mainFrame) {
        QWebFrameData frameData(page);
        mainFrame = new QWebFrame(q, &frameData);

        emit q->frameCreated(mainFrame);
    }
}

static QWebPage::WebAction webActionForContextMenuAction(WebCore::ContextMenuAction action)
{
    switch (action) {
        case WebCore::ContextMenuItemTagOpenLink: return QWebPage::OpenLink;
        case WebCore::ContextMenuItemTagOpenLinkInNewWindow: return QWebPage::OpenLinkInNewWindow;
        case WebCore::ContextMenuItemTagDownloadLinkToDisk: return QWebPage::DownloadLinkToDisk;
        case WebCore::ContextMenuItemTagCopyLinkToClipboard: return QWebPage::CopyLinkToClipboard;
        case WebCore::ContextMenuItemTagOpenImageInNewWindow: return QWebPage::OpenImageInNewWindow;
        case WebCore::ContextMenuItemTagDownloadImageToDisk: return QWebPage::DownloadImageToDisk;
        case WebCore::ContextMenuItemTagCopyImageToClipboard: return QWebPage::CopyImageToClipboard;
        case WebCore::ContextMenuItemTagCopyImageUrlToClipboard: return QWebPage::CopyImageUrlToClipboard;
        case WebCore::ContextMenuItemTagOpenFrameInNewWindow: return QWebPage::OpenFrameInNewWindow;
        case WebCore::ContextMenuItemTagCopy: return QWebPage::Copy;
        case WebCore::ContextMenuItemTagGoBack: return QWebPage::Back;
        case WebCore::ContextMenuItemTagGoForward: return QWebPage::Forward;
        case WebCore::ContextMenuItemTagStop: return QWebPage::Stop;
        case WebCore::ContextMenuItemTagReload: return QWebPage::Reload;
        case WebCore::ContextMenuItemTagCut: return QWebPage::Cut;
        case WebCore::ContextMenuItemTagPaste: return QWebPage::Paste;
        case WebCore::ContextMenuItemTagDefaultDirection: return QWebPage::SetTextDirectionDefault;
        case WebCore::ContextMenuItemTagLeftToRight: return QWebPage::SetTextDirectionLeftToRight;
        case WebCore::ContextMenuItemTagRightToLeft: return QWebPage::SetTextDirectionRightToLeft;
        case WebCore::ContextMenuItemTagBold: return QWebPage::ToggleBold;
        case WebCore::ContextMenuItemTagItalic: return QWebPage::ToggleItalic;
        case WebCore::ContextMenuItemTagUnderline: return QWebPage::ToggleUnderline;
        case WebCore::ContextMenuItemTagSelectAll: return QWebPage::SelectAll;
#if ENABLE(INSPECTOR)
        case WebCore::ContextMenuItemTagInspectElement: return QWebPage::InspectElement;
#endif
        default: break;
    }
    return QWebPage::NoWebAction;
}

#ifndef QT_NO_CONTEXTMENU
QMenu *QWebPagePrivate::createContextMenu(const WebCore::ContextMenu *webcoreMenu,
        const QList<WebCore::ContextMenuItem> *items, QBitArray *visitedWebActions)
{
    if (!client || !webcoreMenu)
        return 0;

    QMenu* menu = new QMenu(client->ownerWidget());
    for (int i = 0; i < items->count(); ++i) {
        const ContextMenuItem &item = items->at(i);
        switch (item.type()) {
            case WebCore::CheckableActionType: /* fall through */
            case WebCore::ActionType: {
                QWebPage::WebAction action = webActionForContextMenuAction(item.action());
                QAction *a = q->action(action);
                if (a) {
                    ContextMenuItem it(item);
                    page->contextMenuController()->checkOrEnableIfNeeded(it);
                    PlatformMenuItemDescription desc = it.releasePlatformDescription();
                    a->setEnabled(desc.enabled);
                    a->setChecked(desc.checked);
                    a->setCheckable(item.type() == WebCore::CheckableActionType);

                    menu->addAction(a);
                    visitedWebActions->setBit(action);
                }
                break;
            }
            case WebCore::SeparatorType:
                menu->addSeparator();
                break;
            case WebCore::SubmenuType: {
                QMenu *subMenu = createContextMenu(webcoreMenu, item.platformSubMenu(), visitedWebActions);

                bool anyEnabledAction = false;

                QList<QAction *> actions = subMenu->actions();
                for (int i = 0; i < actions.count(); ++i) {
                    if (actions.at(i)->isVisible())
                        anyEnabledAction |= actions.at(i)->isEnabled();
                }

                // don't show sub-menus with just disabled actions
                if (anyEnabledAction) {
                    subMenu->setTitle(item.title());
                    menu->addAction(subMenu->menuAction());
                } else
                    delete subMenu;
                break;
            }
        }
    }
    return menu;
}
#endif // QT_NO_CONTEXTMENU

#ifndef QT_NO_ACTION
void QWebPagePrivate::_q_webActionTriggered(bool checked)
{
    QAction *a = qobject_cast<QAction *>(q->sender());
    if (!a)
        return;
    QWebPage::WebAction action = static_cast<QWebPage::WebAction>(a->data().toInt());
    q->triggerAction(action, checked);
}
#endif // QT_NO_ACTION

void QWebPagePrivate::_q_cleanupLeakMessages()
{
#ifndef NDEBUG
    // Need this to make leak messages accurate.
    memoryCache()->setCapacities(0, 0, 0);
#endif
}

void QWebPagePrivate::updateAction(QWebPage::WebAction action)
{
#ifdef QT_NO_ACTION
    Q_UNUSED(action)
#else
    QAction *a = actions[action];
    if (!a || !mainFrame)
        return;

    WebCore::FrameLoader *loader = mainFrame->d->frame->loader();
    WebCore::Editor *editor = page->focusController()->focusedOrMainFrame()->editor();

    bool enabled = a->isEnabled();
    bool checked = a->isChecked();

    switch (action) {
        case QWebPage::Back:
            enabled = page->canGoBackOrForward(-1);
            break;
        case QWebPage::Forward:
            enabled = page->canGoBackOrForward(1);
            break;
        case QWebPage::Stop:
            enabled = loader->isLoading();
            break;
        case QWebPage::Reload:
        case QWebPage::ReloadAndBypassCache:
            enabled = !loader->isLoading();
            break;
#ifndef QT_NO_UNDOSTACK
        case QWebPage::Undo:
        case QWebPage::Redo:
            // those two are handled by QUndoStack
            break;
#endif // QT_NO_UNDOSTACK
        case QWebPage::SelectAll: // editor command is always enabled
            break;
        case QWebPage::SetTextDirectionDefault:
        case QWebPage::SetTextDirectionLeftToRight:
        case QWebPage::SetTextDirectionRightToLeft:
            enabled = editor->canEdit();
            checked = false;
            break;
        default: {
            // see if it's an editor command
            const char* commandName = editorCommandForWebActions(action);

            // if it's an editor command, let it's logic determine state
            if (commandName) {
                Editor::Command command = editor->command(commandName);
                enabled = command.isEnabled();
                if (enabled)
                    checked = command.state() != FalseTriState;
                else
                    checked = false;
            }
            break;
        }
    }

    a->setEnabled(enabled);

    if (a->isCheckable())
        a->setChecked(checked);
#endif // QT_NO_ACTION
}

void QWebPagePrivate::updateNavigationActions()
{
    updateAction(QWebPage::Back);
    updateAction(QWebPage::Forward);
    updateAction(QWebPage::Stop);
    updateAction(QWebPage::Reload);
    updateAction(QWebPage::ReloadAndBypassCache);
}

void QWebPagePrivate::updateEditorActions()
{
    updateAction(QWebPage::Cut);
    updateAction(QWebPage::Copy);
    updateAction(QWebPage::Paste);
    updateAction(QWebPage::MoveToNextChar);
    updateAction(QWebPage::MoveToPreviousChar);
    updateAction(QWebPage::MoveToNextWord);
    updateAction(QWebPage::MoveToPreviousWord);
    updateAction(QWebPage::MoveToNextLine);
    updateAction(QWebPage::MoveToPreviousLine);
    updateAction(QWebPage::MoveToStartOfLine);
    updateAction(QWebPage::MoveToEndOfLine);
    updateAction(QWebPage::MoveToStartOfBlock);
    updateAction(QWebPage::MoveToEndOfBlock);
    updateAction(QWebPage::MoveToStartOfDocument);
    updateAction(QWebPage::MoveToEndOfDocument);
    updateAction(QWebPage::SelectNextChar);
    updateAction(QWebPage::SelectPreviousChar);
    updateAction(QWebPage::SelectNextWord);
    updateAction(QWebPage::SelectPreviousWord);
    updateAction(QWebPage::SelectNextLine);
    updateAction(QWebPage::SelectPreviousLine);
    updateAction(QWebPage::SelectStartOfLine);
    updateAction(QWebPage::SelectEndOfLine);
    updateAction(QWebPage::SelectStartOfBlock);
    updateAction(QWebPage::SelectEndOfBlock);
    updateAction(QWebPage::SelectStartOfDocument);
    updateAction(QWebPage::SelectEndOfDocument);
    updateAction(QWebPage::DeleteStartOfWord);
    updateAction(QWebPage::DeleteEndOfWord);
    updateAction(QWebPage::SetTextDirectionDefault);
    updateAction(QWebPage::SetTextDirectionLeftToRight);
    updateAction(QWebPage::SetTextDirectionRightToLeft);
    updateAction(QWebPage::ToggleBold);
    updateAction(QWebPage::ToggleItalic);
    updateAction(QWebPage::ToggleUnderline);
    updateAction(QWebPage::InsertParagraphSeparator);
    updateAction(QWebPage::InsertLineSeparator);
    updateAction(QWebPage::PasteAndMatchStyle);
    updateAction(QWebPage::RemoveFormat);
    updateAction(QWebPage::ToggleStrikethrough);
    updateAction(QWebPage::ToggleSubscript);
    updateAction(QWebPage::ToggleSuperscript);
    updateAction(QWebPage::InsertUnorderedList);
    updateAction(QWebPage::InsertOrderedList);
    updateAction(QWebPage::Indent);
    updateAction(QWebPage::Outdent);
    updateAction(QWebPage::AlignCenter);
    updateAction(QWebPage::AlignJustified);
    updateAction(QWebPage::AlignLeft);
    updateAction(QWebPage::AlignRight);
}

void QWebPagePrivate::timerEvent(QTimerEvent *ev)
{
    int timerId = ev->timerId();
    if (timerId == tripleClickTimer.timerId())
        tripleClickTimer.stop();
    else
        q->timerEvent(ev);
}

template<class T>
void QWebPagePrivate::mouseMoveEvent(T* ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    bool accepted = frame->eventHandler()->mouseMoved(PlatformMouseEvent(ev, 0));
    ev->setAccepted(accepted);
}

template<class T>
void QWebPagePrivate::mousePressEvent(T* ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    RefPtr<WebCore::Node> oldNode;
    Frame* focusedFrame = page->focusController()->focusedFrame();
    if (Document* focusedDocument = focusedFrame ? focusedFrame->document() : 0)
        oldNode = focusedDocument->focusedNode();

    if (tripleClickTimer.isActive()
            && (ev->pos() - tripleClick).manhattanLength()
                < QApplication::startDragDistance()) {
        mouseTripleClickEvent(ev);
        return;
    }

    bool accepted = false;
    adjustPointForClicking(ev);
    PlatformMouseEvent mev(ev, 1);
    // ignore the event if we can't map Qt's mouse buttons to WebCore::MouseButton
    if (mev.button() != NoButton)
        accepted = frame->eventHandler()->handleMousePressEvent(mev);
    ev->setAccepted(accepted);

    RefPtr<WebCore::Node> newNode;
    focusedFrame = page->focusController()->focusedFrame();
    if (Document* focusedDocument = focusedFrame ? focusedFrame->document() : 0)
        newNode = focusedDocument->focusedNode();

    if (newNode && oldNode != newNode)
        clickCausedFocus = true;
}

template<class T>
void QWebPagePrivate::mouseDoubleClickEvent(T *ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    bool accepted = false;
    PlatformMouseEvent mev(ev, 2);
    // ignore the event if we can't map Qt's mouse buttons to WebCore::MouseButton
    if (mev.button() != NoButton)
        accepted = frame->eventHandler()->handleMousePressEvent(mev);
    ev->setAccepted(accepted);

    tripleClickTimer.start(QApplication::doubleClickInterval(), q);
    tripleClick = QPointF(ev->pos()).toPoint();
}

template<class T>
void QWebPagePrivate::mouseTripleClickEvent(T *ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    bool accepted = false;
    PlatformMouseEvent mev(ev, 3);
    // ignore the event if we can't map Qt's mouse buttons to WebCore::MouseButton
    if (mev.button() != NoButton)
        accepted = frame->eventHandler()->handleMousePressEvent(mev);
    ev->setAccepted(accepted);
}

void QWebPagePrivate::handleClipboard(QEvent* ev, Qt::MouseButton button)
{
#ifndef QT_NO_CLIPBOARD
    if (QApplication::clipboard()->supportsSelection()) {
        bool oldSelectionMode = Pasteboard::generalPasteboard()->isSelectionMode();
        Pasteboard::generalPasteboard()->setSelectionMode(true);
        WebCore::Frame* focusFrame = page->focusController()->focusedOrMainFrame();
        if (button == Qt::LeftButton) {
            if (focusFrame && (focusFrame->editor()->canCopy() || focusFrame->editor()->canDHTMLCopy())) {
                Pasteboard::generalPasteboard()->writeSelection(focusFrame->editor()->selectedRange().get(), focusFrame->editor()->canSmartCopyOrDelete(), focusFrame);
                ev->setAccepted(true);
            }
        } else if (button == Qt::MidButton) {
            if (focusFrame && (focusFrame->editor()->canPaste() || focusFrame->editor()->canDHTMLPaste())) {
                focusFrame->editor()->paste();
                ev->setAccepted(true);
            }
        }
        Pasteboard::generalPasteboard()->setSelectionMode(oldSelectionMode);
    }
#endif
}

template<class T>
void QWebPagePrivate::mouseReleaseEvent(T *ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    bool accepted = false;
    adjustPointForClicking(ev);
    PlatformMouseEvent mev(ev, 0);
    // ignore the event if we can't map Qt's mouse buttons to WebCore::MouseButton
    if (mev.button() != NoButton)
        accepted = frame->eventHandler()->handleMouseReleaseEvent(mev);
    ev->setAccepted(accepted);

    handleClipboard(ev, ev->button());
    handleSoftwareInputPanel(ev->button(), QPointF(ev->pos()).toPoint());
}

void QWebPagePrivate::handleSoftwareInputPanel(Qt::MouseButton button, const QPoint& pos)
{
    Frame* frame = page->focusController()->focusedFrame();
    if (!frame)
        return;

    if (client && client->inputMethodEnabled()
        && frame->document()->focusedNode()
        && button == Qt::LeftButton && qApp->autoSipEnabled()) {
        QStyle::RequestSoftwareInputPanel behavior = QStyle::RequestSoftwareInputPanel(
            client->ownerWidget()->style()->styleHint(QStyle::SH_RequestSoftwareInputPanel));
        if (!clickCausedFocus || behavior == QStyle::RSIP_OnMouseClick) {
            HitTestResult result = frame->eventHandler()->hitTestResultAtPoint(frame->view()->windowToContents(pos), false);
            if (result.isContentEditable()) {
                QEvent event(QEvent::RequestSoftwareInputPanel);
                QApplication::sendEvent(client->ownerWidget(), &event);
            }
        }
    }

    clickCausedFocus = false;
}

#ifndef QT_NO_CONTEXTMENU
void QWebPagePrivate::contextMenuEvent(const QPoint& globalPos)
{
    QMenu *menu = q->createStandardContextMenu();
    if (menu) {
        menu->exec(globalPos);
        delete menu;
    }
}
#endif // QT_NO_CONTEXTMENU

/*!
    \since 4.5
    This function creates the standard context menu which is shown when
    the user clicks on the web page with the right mouse button. It is
    called from the default contextMenuEvent() handler. The popup menu's
    ownership is transferred to the caller.
 */
QMenu *QWebPage::createStandardContextMenu()
{
#ifndef QT_NO_CONTEXTMENU
    QMenu *menu = d->currentContextMenu;
    d->currentContextMenu = 0;
    return menu;
#else
    return 0;
#endif
}

#ifndef QT_NO_WHEELEVENT
template<class T>
void QWebPagePrivate::wheelEvent(T *ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    WebCore::PlatformWheelEvent pev(ev);
    bool accepted = frame->eventHandler()->handleWheelEvent(pev);
    ev->setAccepted(accepted);
}
#endif // QT_NO_WHEELEVENT

#ifndef QT_NO_SHORTCUT
QWebPage::WebAction QWebPagePrivate::editorActionForKeyEvent(QKeyEvent* event)
{
    static struct {
        QKeySequence::StandardKey standardKey;
        QWebPage::WebAction action;
    } editorActions[] = {
        { QKeySequence::Cut, QWebPage::Cut },
        { QKeySequence::Copy, QWebPage::Copy },
        { QKeySequence::Paste, QWebPage::Paste },
        { QKeySequence::Undo, QWebPage::Undo },
        { QKeySequence::Redo, QWebPage::Redo },
        { QKeySequence::MoveToNextChar, QWebPage::MoveToNextChar },
        { QKeySequence::MoveToPreviousChar, QWebPage::MoveToPreviousChar },
        { QKeySequence::MoveToNextWord, QWebPage::MoveToNextWord },
        { QKeySequence::MoveToPreviousWord, QWebPage::MoveToPreviousWord },
        { QKeySequence::MoveToNextLine, QWebPage::MoveToNextLine },
        { QKeySequence::MoveToPreviousLine, QWebPage::MoveToPreviousLine },
        { QKeySequence::MoveToStartOfLine, QWebPage::MoveToStartOfLine },
        { QKeySequence::MoveToEndOfLine, QWebPage::MoveToEndOfLine },
        { QKeySequence::MoveToStartOfBlock, QWebPage::MoveToStartOfBlock },
        { QKeySequence::MoveToEndOfBlock, QWebPage::MoveToEndOfBlock },
        { QKeySequence::MoveToStartOfDocument, QWebPage::MoveToStartOfDocument },
        { QKeySequence::MoveToEndOfDocument, QWebPage::MoveToEndOfDocument },
        { QKeySequence::SelectNextChar, QWebPage::SelectNextChar },
        { QKeySequence::SelectPreviousChar, QWebPage::SelectPreviousChar },
        { QKeySequence::SelectNextWord, QWebPage::SelectNextWord },
        { QKeySequence::SelectPreviousWord, QWebPage::SelectPreviousWord },
        { QKeySequence::SelectNextLine, QWebPage::SelectNextLine },
        { QKeySequence::SelectPreviousLine, QWebPage::SelectPreviousLine },
        { QKeySequence::SelectStartOfLine, QWebPage::SelectStartOfLine },
        { QKeySequence::SelectEndOfLine, QWebPage::SelectEndOfLine },
        { QKeySequence::SelectStartOfBlock, QWebPage::SelectStartOfBlock },
        { QKeySequence::SelectEndOfBlock,  QWebPage::SelectEndOfBlock },
        { QKeySequence::SelectStartOfDocument, QWebPage::SelectStartOfDocument },
        { QKeySequence::SelectEndOfDocument, QWebPage::SelectEndOfDocument },
        { QKeySequence::DeleteStartOfWord, QWebPage::DeleteStartOfWord },
        { QKeySequence::DeleteEndOfWord, QWebPage::DeleteEndOfWord },
        { QKeySequence::InsertParagraphSeparator, QWebPage::InsertParagraphSeparator },
        { QKeySequence::InsertLineSeparator, QWebPage::InsertLineSeparator },
        { QKeySequence::SelectAll, QWebPage::SelectAll },
        { QKeySequence::UnknownKey, QWebPage::NoWebAction }
    };

    for (int i = 0; editorActions[i].standardKey != QKeySequence::UnknownKey; ++i)
        if (event == editorActions[i].standardKey)
            return editorActions[i].action;

    return QWebPage::NoWebAction;
}
#endif // QT_NO_SHORTCUT

void QWebPagePrivate::keyPressEvent(QKeyEvent *ev)
{
    bool handled = false;
    WebCore::Frame* frame = page->focusController()->focusedOrMainFrame();
    // we forward the key event to WebCore first to handle potential DOM
    // defined event handlers and later on end up in EditorClientQt::handleKeyboardEvent
    // to trigger editor commands via triggerAction().
    if (!handled)
        handled = frame->eventHandler()->keyEvent(ev);
    if (!handled) {
        handled = true;
        if (!handleScrolling(ev, frame)) {
            switch (ev->key()) {
            case Qt::Key_Back:
                q->triggerAction(QWebPage::Back);
                break;
            case Qt::Key_Forward:
                q->triggerAction(QWebPage::Forward);
                break;
            case Qt::Key_Stop:
                q->triggerAction(QWebPage::Stop);
                break;
            case Qt::Key_Refresh:
                q->triggerAction(QWebPage::Reload);
                break;
            case Qt::Key_Backspace:
                if (ev->modifiers() == Qt::ShiftModifier)
                    q->triggerAction(QWebPage::Forward);
                else
                    q->triggerAction(QWebPage::Back);
                break;
            default:
                handled = false;
                break;
            }
        }
    }

    ev->setAccepted(handled);
}

void QWebPagePrivate::keyReleaseEvent(QKeyEvent *ev)
{
    if (ev->isAutoRepeat()) {
        ev->setAccepted(true);
        return;
    }

    WebCore::Frame* frame = page->focusController()->focusedOrMainFrame();
    bool handled = frame->eventHandler()->keyEvent(ev);
    ev->setAccepted(handled);
}

void QWebPagePrivate::focusInEvent(QFocusEvent*)
{
    FocusController *focusController = page->focusController();
    focusController->setActive(true);
    focusController->setFocused(true);
    if (!focusController->focusedFrame())
        focusController->setFocusedFrame(QWebFramePrivate::core(mainFrame));
}

void QWebPagePrivate::focusOutEvent(QFocusEvent*)
{
    // only set the focused frame inactive so that we stop painting the caret
    // and the focus frame. But don't tell the focus controller so that upon
    // focusInEvent() we can re-activate the frame.
    FocusController *focusController = page->focusController();
    // Call setFocused first so that window.onblur doesn't get called twice
    focusController->setFocused(false);
    focusController->setActive(false);
}

template<class T>
void QWebPagePrivate::dragEnterEvent(T* ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), QPointF(ev->pos()).toPoint(),
            QCursor::pos(), dropActionToDragOp(ev->possibleActions()));
    Qt::DropAction action = dragOpToDropAction(page->dragController()->dragEntered(&dragData));
    ev->setDropAction(action);
    ev->acceptProposedAction();
#endif
}

template<class T>
void QWebPagePrivate::dragLeaveEvent(T *ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(0, IntPoint(), QCursor::pos(), DragOperationNone);
    page->dragController()->dragExited(&dragData);
    ev->accept();
#endif
}

template<class T>
void QWebPagePrivate::dragMoveEvent(T *ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), QPointF(ev->pos()).toPoint(),
            QCursor::pos(), dropActionToDragOp(ev->possibleActions()));
    m_lastDropAction = dragOpToDropAction(page->dragController()->dragUpdated(&dragData));
    ev->setDropAction(m_lastDropAction);
    if (m_lastDropAction != Qt::IgnoreAction)
        ev->accept();
#endif
}

template<class T>
void QWebPagePrivate::dropEvent(T *ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), QPointF(ev->pos()).toPoint(),
            QCursor::pos(), dropActionToDragOp(ev->possibleActions()));
    if (page->dragController()->performDrag(&dragData)) {
        ev->setDropAction(m_lastDropAction);
        ev->accept();
    }
#endif
}

void QWebPagePrivate::leaveEvent(QEvent*)
{
    // Fake a mouse move event just outside of the widget, since all
    // the interesting mouse-out behavior like invalidating scrollbars
    // is handled by the WebKit event handler's mouseMoved function.
    QMouseEvent fakeEvent(QEvent::MouseMove, QCursor::pos(), Qt::NoButton, Qt::NoButton, Qt::NoModifier);
    mouseMoveEvent(&fakeEvent);
}

/*!
    \property QWebPage::palette
    \brief the page's palette

    The base brush of the palette is used to draw the background of the main frame.

    By default, this property contains the application's default palette.
*/
void QWebPage::setPalette(const QPalette &pal)
{
    d->palette = pal;
    if (!d->mainFrame || !d->mainFrame->d->frame->view())
        return;

    QBrush brush = pal.brush(QPalette::Base);
    QColor backgroundColor = brush.style() == Qt::SolidPattern ? brush.color() : QColor();
    QWebFramePrivate::core(d->mainFrame)->view()->updateBackgroundRecursively(backgroundColor, !backgroundColor.alpha());
}

QPalette QWebPage::palette() const
{
    return d->palette;
}

void QWebPagePrivate::inputMethodEvent(QInputMethodEvent *ev)
{
    WebCore::Frame *frame = page->focusController()->focusedOrMainFrame();
    WebCore::Editor *editor = frame->editor();

    if (!editor->canEdit()) {
        ev->ignore();
        return;
    }

    Node* node = 0;
    if (frame->selection()->rootEditableElement())
        node = frame->selection()->rootEditableElement()->shadowAncestorNode();

    Vector<CompositionUnderline> underlines;
    bool hasSelection = false;

    for (int i = 0; i < ev->attributes().size(); ++i) {
        const QInputMethodEvent::Attribute& a = ev->attributes().at(i);
        switch (a.type) {
        case QInputMethodEvent::TextFormat: {
            QTextCharFormat textCharFormat = a.value.value<QTextFormat>().toCharFormat();
            QColor qcolor = textCharFormat.underlineColor();
            underlines.append(CompositionUnderline(qMin(a.start, (a.start + a.length)), qMax(a.start, (a.start + a.length)), Color(makeRGBA(qcolor.red(), qcolor.green(), qcolor.blue(), qcolor.alpha())), false));
            break;
        }
        case QInputMethodEvent::Cursor: {
            frame->selection()->setCaretVisible(a.length); //if length is 0 cursor is invisible
            if (a.length > 0) {
                RenderObject* caretRenderer = frame->selection()->caretRenderer();
                if (caretRenderer) {
                    QColor qcolor = a.value.value<QColor>();
                    caretRenderer->style()->setColor(Color(makeRGBA(qcolor.red(), qcolor.green(), qcolor.blue(), qcolor.alpha())));
                }
            }
            break;
        }
        case QInputMethodEvent::Selection: {
            hasSelection = true;
            // A selection in the inputMethodEvent is always reflected in the visible text
            if (node)
                setSelectionRange(node, qMin(a.start, (a.start + a.length)), qMax(a.start, (a.start + a.length)));

            if (!ev->preeditString().isEmpty())
                editor->setComposition(ev->preeditString(), underlines, qMin(a.start, (a.start + a.length)), qMax(a.start, (a.start + a.length)));
            else {
                // If we are in the middle of a composition, an empty pre-edit string and a selection of zero
                // cancels the current composition
                if (editor->hasComposition() && (a.start + a.length == 0))
                    editor->setComposition(QString(), underlines, 0, 0);
            }
            break;
        }
        default:
            break;
        }
    }

    if (node && ev->replacementLength() > 0) {
        int cursorPos = frame->selection()->extent().offsetInContainerNode();
        int start = cursorPos + ev->replacementStart();
        setSelectionRange(node, start, start + ev->replacementLength());
        // Commit regardless of whether commitString is empty, to get rid of selection.
        editor->confirmComposition(ev->commitString());
    } else if (!ev->commitString().isEmpty()) {
        if (editor->hasComposition())
            editor->confirmComposition(ev->commitString());
        else
            editor->insertText(ev->commitString(), 0);
    } else if (!hasSelection && !ev->preeditString().isEmpty())
        editor->setComposition(ev->preeditString(), underlines, 0, 0);
    else if (ev->preeditString().isEmpty() && editor->hasComposition())
        editor->confirmComposition(String());

    ev->accept();
}

#ifndef QT_NO_PROPERTIES
typedef struct {
    const char* name;
    double deferredRepaintDelay;
    double initialDeferredRepaintDelayDuringLoading;
    double maxDeferredRepaintDelayDuringLoading;
    double deferredRepaintDelayIncrementDuringLoading;
} QRepaintThrottlingPreset;

void QWebPagePrivate::dynamicPropertyChangeEvent(QDynamicPropertyChangeEvent* event)
{
    if (event->propertyName() == "_q_viewMode") {
        page->setViewMode(Page::stringToViewMode(q->property("_q_viewMode").toString()));
    } else if (event->propertyName() == "_q_HTMLTokenizerChunkSize") {
        int chunkSize = q->property("_q_HTMLTokenizerChunkSize").toInt();
        q->handle()->page->setCustomHTMLTokenizerChunkSize(chunkSize);
    } else if (event->propertyName() == "_q_HTMLTokenizerTimeDelay") {
        double timeDelay = q->property("_q_HTMLTokenizerTimeDelay").toDouble();
        q->handle()->page->setCustomHTMLTokenizerTimeDelay(timeDelay);
    } else if (event->propertyName() == "_q_RepaintThrottlingDeferredRepaintDelay") {
        double p = q->property("_q_RepaintThrottlingDeferredRepaintDelay").toDouble();
        FrameView::setRepaintThrottlingDeferredRepaintDelay(p);
    } else if (event->propertyName() == "_q_RepaintThrottlingnInitialDeferredRepaintDelayDuringLoading") {
        double p = q->property("_q_RepaintThrottlingnInitialDeferredRepaintDelayDuringLoading").toDouble();
        FrameView::setRepaintThrottlingnInitialDeferredRepaintDelayDuringLoading(p);
    } else if (event->propertyName() == "_q_RepaintThrottlingMaxDeferredRepaintDelayDuringLoading") {
        double p = q->property("_q_RepaintThrottlingMaxDeferredRepaintDelayDuringLoading").toDouble();
        FrameView::setRepaintThrottlingMaxDeferredRepaintDelayDuringLoading(p);
    } else if (event->propertyName() == "_q_RepaintThrottlingDeferredRepaintDelayIncrementDuringLoading") {
        double p = q->property("_q_RepaintThrottlingDeferredRepaintDelayIncrementDuringLoading").toDouble();
        FrameView::setRepaintThrottlingDeferredRepaintDelayIncrementDuringLoading(p);
    } else if (event->propertyName() == "_q_RepaintThrottlingPreset") {
        static const QRepaintThrottlingPreset presets[] = {
            {   "NoThrottling",     0,      0,      0,      0 },
            {   "Legacy",       0.025,      0,    2.5,    0.5 },
            {   "Minimal",       0.01,      0,      1,    0.2 },
            {   "Medium",       0.025,      1,      5,    0.5 },
            {   "Heavy",          0.1,      2,     10,      1 }
        };

        QString p = q->property("_q_RepaintThrottlingPreset").toString();
        for (size_t i = 0; i < sizeof(presets) / sizeof(presets[0]); i++) {
            if (p == QLatin1String(presets[i].name)) {
                FrameView::setRepaintThrottlingDeferredRepaintDelay(
                        presets[i].deferredRepaintDelay);
                FrameView::setRepaintThrottlingnInitialDeferredRepaintDelayDuringLoading(
                        presets[i].initialDeferredRepaintDelayDuringLoading);
                FrameView::setRepaintThrottlingMaxDeferredRepaintDelayDuringLoading(
                        presets[i].maxDeferredRepaintDelayDuringLoading);
                FrameView::setRepaintThrottlingDeferredRepaintDelayIncrementDuringLoading(
                        presets[i].deferredRepaintDelayIncrementDuringLoading);
                break;
            }
        }
    }
#if ENABLE(TILED_BACKING_STORE)
    else if (event->propertyName() == "_q_TiledBackingStoreTileSize") {
        WebCore::Frame* frame = QWebFramePrivate::core(q->mainFrame());
        if (!frame->tiledBackingStore())
            return;
        QSize tileSize = q->property("_q_TiledBackingStoreTileSize").toSize();
        frame->tiledBackingStore()->setTileSize(tileSize);
    } else if (event->propertyName() == "_q_TiledBackingStoreTileCreationDelay") {
        WebCore::Frame* frame = QWebFramePrivate::core(q->mainFrame());
        if (!frame->tiledBackingStore())
            return;
        int tileCreationDelay = q->property("_q_TiledBackingStoreTileCreationDelay").toInt();
        frame->tiledBackingStore()->setTileCreationDelay(static_cast<double>(tileCreationDelay) / 1000.);
    } else if (event->propertyName() == "_q_TiledBackingStoreKeepAreaMultiplier") {
        WebCore::Frame* frame = QWebFramePrivate::core(q->mainFrame());
        if (!frame->tiledBackingStore())
            return;
        FloatSize keepMultiplier;
        FloatSize coverMultiplier;
        frame->tiledBackingStore()->getKeepAndCoverAreaMultipliers(keepMultiplier, coverMultiplier);
        QSizeF qSize = q->property("_q_TiledBackingStoreKeepAreaMultiplier").toSizeF();
        keepMultiplier = FloatSize(qSize.width(), qSize.height());
        frame->tiledBackingStore()->setKeepAndCoverAreaMultipliers(keepMultiplier, coverMultiplier);
    } else if (event->propertyName() == "_q_TiledBackingStoreCoverAreaMultiplier") {
        WebCore::Frame* frame = QWebFramePrivate::core(q->mainFrame());
        if (!frame->tiledBackingStore())
            return;
        FloatSize keepMultiplier;
        FloatSize coverMultiplier;
        frame->tiledBackingStore()->getKeepAndCoverAreaMultipliers(keepMultiplier, coverMultiplier);
        QSizeF qSize = q->property("_q_TiledBackingStoreCoverAreaMultiplier").toSizeF();
        coverMultiplier = FloatSize(qSize.width(), qSize.height());
        frame->tiledBackingStore()->setKeepAndCoverAreaMultipliers(keepMultiplier, coverMultiplier);
    }
#endif
    else if (event->propertyName() == "_q_webInspectorServerPort") {
        InspectorServerQt* inspectorServer = InspectorServerQt::server();
        inspectorServer->listen(inspectorServerPort());
    } else if (event->propertyName() == "_q_deadDecodedDataDeletionInterval") {
        double interval = q->property("_q_deadDecodedDataDeletionInterval").toDouble();
        memoryCache()->setDeadDecodedDataDeletionInterval(interval);
    }
}
#endif

void QWebPagePrivate::shortcutOverrideEvent(QKeyEvent* event)
{
    WebCore::Frame* frame = page->focusController()->focusedOrMainFrame();
    WebCore::Editor* editor = frame->editor();
    if (editor->canEdit()) {
        if (event->modifiers() == Qt::NoModifier
            || event->modifiers() == Qt::ShiftModifier
            || event->modifiers() == Qt::KeypadModifier) {
                if (event->key() < Qt::Key_Escape) {
                    event->accept();
                } else {
                    switch (event->key()) {
                    case Qt::Key_Return:
                    case Qt::Key_Enter:
                    case Qt::Key_Delete:
                    case Qt::Key_Home:
                    case Qt::Key_End:
                    case Qt::Key_Backspace:
                    case Qt::Key_Left:
                    case Qt::Key_Right:
                    case Qt::Key_Up:
                    case Qt::Key_Down:
                    case Qt::Key_Tab:
                        event->accept();
                    default:
                        break;
                    }
                }
        }
#ifndef QT_NO_SHORTCUT
        else if (editorActionForKeyEvent(event) != QWebPage::NoWebAction)
            event->accept();
#endif
    }
}

bool QWebPagePrivate::handleScrolling(QKeyEvent *ev, Frame *frame)
{
    ScrollDirection direction;
    ScrollGranularity granularity;

#ifndef QT_NO_SHORTCUT
    if (ev == QKeySequence::MoveToNextPage
        || (ev->key() == Qt::Key_Space && !(ev->modifiers() & Qt::ShiftModifier))) {
        granularity = ScrollByPage;
        direction = ScrollDown;
    } else if (ev == QKeySequence::MoveToPreviousPage
               || ((ev->key() == Qt::Key_Space) && (ev->modifiers() & Qt::ShiftModifier))) {
        granularity = ScrollByPage;
        direction = ScrollUp;
    } else
#endif // QT_NO_SHORTCUT
    if ((ev->key() == Qt::Key_Up && ev->modifiers() & Qt::ControlModifier)
               || ev->key() == Qt::Key_Home) {
        granularity = ScrollByDocument;
        direction = ScrollUp;
    } else if ((ev->key() == Qt::Key_Down && ev->modifiers() & Qt::ControlModifier)
               || ev->key() == Qt::Key_End) {
        granularity = ScrollByDocument;
        direction = ScrollDown;
    } else {
        switch (ev->key()) {
            case Qt::Key_Up:
                granularity = ScrollByLine;
                direction = ScrollUp;
                break;
            case Qt::Key_Down:
                granularity = ScrollByLine;
                direction = ScrollDown;
                break;
            case Qt::Key_Left:
                granularity = ScrollByLine;
                direction = ScrollLeft;
                break;
            case Qt::Key_Right:
                granularity = ScrollByLine;
                direction = ScrollRight;
                break;
            default:
                return false;
        }
    }

    return frame->eventHandler()->scrollRecursively(direction, granularity);
}

void QWebPagePrivate::adjustPointForClicking(QMouseEvent*)
{
    notImplemented();
}

#if !defined(QT_NO_GRAPHICSVIEW)
void QWebPagePrivate::adjustPointForClicking(QGraphicsScene…