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/*****************************************************************************

        Array.h
        Copyright (c) 2005 Laurent de Soras

--- Legal stuff ---

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*Tab=3***********************************************************************/



#if ! defined (Array_HEADER_INCLUDED)
#define	Array_HEADER_INCLUDED

#if defined (_MSC_VER)
	#pragma once
	#pragma warning (4 : 4250) // "Inherits via dominance."
#endif



/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/



template <class T, long LEN>
class Array
{

/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

public:

	typedef	T	DataType;

						Array ();

	inline const DataType &
						operator [] (long pos) const;
	inline DataType &
						operator [] (long pos);

	static inline long
						size ();



/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

protected:



/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

	DataType			_data_arr [LEN];



/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/

private:

						Array (const Array &other);
	Array &			operator = (const Array &other);
	bool				operator == (const Array &other);
	bool				operator != (const Array &other);

};	// class Array



#include	"Array.hpp"



#endif	// Array_HEADER_INCLUDED



/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
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/*
    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 "qwebkitversion.h"

#include "Chrome.h"
#include "ContextMenuController.h"
#include "Frame.h"
#include "FrameTree.h"
#include "FrameLoader.h"
#include "FrameLoaderClientQt.h"
#include "FrameView.h"
#include "FormState.h"
#include "ApplicationCacheStorage.h"
#include "ChromeClientQt.h"
#include "ContextMenu.h"
#include "ContextMenuClientQt.h"
#include "DocumentLoader.h"
#include "DragClientQt.h"
#include "DragController.h"
#include "DragData.h"
#include "EditorClientQt.h"
#include "SecurityOrigin.h"
#include "Settings.h"
#include "Page.h"
#include "Pasteboard.h"
#include "FrameLoader.h"
#include "FrameLoadRequest.h"
#include "KURL.h"
#include "Logging.h"
#include "Image.h"
#include "InspectorClientQt.h"
#include "InspectorController.h"
#include "FocusController.h"
#include "Editor.h"
#include "Scrollbar.h"
#include "PlatformKeyboardEvent.h"
#include "PlatformWheelEvent.h"
#include "PluginDatabase.h"
#include "ProgressTracker.h"
#include "RefPtr.h"
#include "RenderTextControl.h"
#include "TextIterator.h"
#include "HashMap.h"
#include "HTMLFormElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HitTestResult.h"
#include "WindowFeatures.h"
#include "LocalizedStrings.h"
#include "Cache.h"
#include "runtime/InitializeThreading.h"
#include "PageGroup.h"
#include "QWebPageClient.h"
#include "WorkerThread.h"

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

#if QT_VERSION >= QT_VERSION_CHECK(4, 6, 0)
#include <QTouchEvent>
#include "PlatformTouchEvent.h"
#endif

using namespace WebCore;

void QWEBKIT_EXPORT qt_wrt_setViewMode(QWebPage* page, const QString& mode)
{
    QWebPagePrivate::priv(page)->viewMode = mode;
    WebCore::Frame* frame = QWebFramePrivate::core(page->mainFrame());
    WebCore::FrameView* view = frame->view();
    frame->document()->updateStyleSelector();
    view->forceLayout();
}

void QWEBKIT_EXPORT qt_drt_overwritePluginDirectories()
{
    PluginDatabase* db = PluginDatabase::installedPlugins(/* populate */ false);

    Vector<String> paths;
    String qtPath(qgetenv("QTWEBKIT_PLUGIN_PATH").data());
    qtPath.split(UChar(':'), /* allowEmptyEntries */ false, paths);

    db->setPluginDirectories(paths);
    db->refresh();
}

int QWEBKIT_EXPORT qt_drt_workerThreadCount()
{
#if ENABLE(WORKERS)
    return WebCore::WorkerThread::workerThreadCount();
#else
    return 0;
#endif
}

bool QWebPagePrivate::drtRun = false;
void QWEBKIT_EXPORT qt_drt_run(bool b)
{
    QWebPagePrivate::drtRun = b;
}

void QWEBKIT_EXPORT qt_drt_setFrameFlatteningEnabled(QWebPage* page, bool enabled)
{
    QWebPagePrivate::core(page)->settings()->setFrameFlatteningEnabled(enabled);
}

void QWEBKIT_EXPORT qt_webpage_setGroupName(QWebPage* page, const QString& groupName)
{
    page->handle()->page->setGroupName(groupName);
}

QString QWEBKIT_EXPORT qt_webpage_groupName(QWebPage* page)
{
    return page->handle()->page->groupName();
}

#if ENABLE(INSPECTOR)
void QWEBKIT_EXPORT qt_drt_webinspector_executeScript(QWebPage* page, long callId, const QString& script)
{
    if (!page->handle()->page->inspectorController())
        return;
    page->handle()->page->inspectorController()->evaluateForTestInFrontend(callId, script);
}

void QWEBKIT_EXPORT qt_drt_webinspector_close(QWebPage* page)
{
    if (!page->handle()->page->inspectorController())
        return;
    page->handle()->page->inspectorController()->close();
}

void QWEBKIT_EXPORT qt_drt_webinspector_show(QWebPage* page)
{
    if (!page->handle()->page->inspectorController())
        return;
    page->handle()->page->inspectorController()->show();
}

void QWEBKIT_EXPORT qt_drt_setTimelineProfilingEnabled(QWebPage* page, bool enabled)
{
    InspectorController* controller = page->handle()->page->inspectorController();
    if (!controller)
        return;
    if (enabled)
        controller->startTimelineProfiler();
    else
        controller->stopTimelineProfiler();
}
#endif

void QWEBKIT_EXPORT qt_drt_enableCaretBrowsing(QWebPage* page, bool value)
{
    page->handle()->page->settings()->setCaretBrowsingEnabled(value);
}

class QWebPageWidgetClient : public QWebPageClient {
public:
    QWebPageWidgetClient(QWidget* view)
        : view(view)
    {
        Q_ASSERT(view);
    }

    virtual bool isQWidgetClient() const { return true; }

    virtual void scroll(int dx, int dy, const QRect&);
    virtual void update(const QRect& dirtyRect);
    virtual void setInputMethodEnabled(bool enable);
    virtual bool inputMethodEnabled() const;
#if QT_VERSION >= 0x040600
    virtual void setInputMethodHint(Qt::InputMethodHint hint, bool enable);
#endif

#ifndef QT_NO_CURSOR
    virtual QCursor cursor() const;
    virtual void updateCursor(const QCursor& cursor);
#endif

    virtual QPalette palette() const;
    virtual int screenNumber() const;
    virtual QWidget* ownerWidget() const;
    virtual QRect geometryRelativeToOwnerWidget() const;

    virtual QObject* pluginParent() const;

    virtual QStyle* style() const;

    QWidget* view;
};

void QWebPageWidgetClient::scroll(int dx, int dy, const QRect& rectToScroll)
{
    view->scroll(qreal(dx), qreal(dy), rectToScroll);
}

void QWebPageWidgetClient::update(const QRect & dirtyRect)
{
    view->update(dirtyRect);
}

void QWebPageWidgetClient::setInputMethodEnabled(bool enable)
{
    view->setAttribute(Qt::WA_InputMethodEnabled, enable);
}

bool QWebPageWidgetClient::inputMethodEnabled() const
{
    return view->testAttribute(Qt::WA_InputMethodEnabled);
}

#if QT_VERSION >= 0x040600
void QWebPageWidgetClient::setInputMethodHint(Qt::InputMethodHint hint, bool enable)
{
    if (enable)
        view->setInputMethodHints(view->inputMethodHints() | hint);
    else
        view->setInputMethodHints(view->inputMethodHints() & ~hint);
}
#endif
#ifndef QT_NO_CURSOR
QCursor QWebPageWidgetClient::cursor() const
{
    return view->cursor();
}

void QWebPageWidgetClient::updateCursor(const QCursor& cursor)
{
    view->setCursor(cursor);
}
#endif

QPalette QWebPageWidgetClient::palette() const
{
    return view->palette();
}

int QWebPageWidgetClient::screenNumber() const
{
#if defined(Q_WS_X11)
    return view->x11Info().screen();
#endif
    return 0;
}

QWidget* QWebPageWidgetClient::ownerWidget() const
{
    return view;
}

QRect QWebPageWidgetClient::geometryRelativeToOwnerWidget() const
{
    return view->geometry();
}

QObject* QWebPageWidgetClient::pluginParent() const
{
    return view;
}

QStyle* QWebPageWidgetClient::style() const
{
    return view->style();
}

// 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 // 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;
}

// If you change this make sure to also adjust the docs for QWebPage::userAgentForUrl
#define WEBKIT_VERSION "527+"

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;
    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)
    , client(0)
#if QT_VERSION < 0x040600
    , view(0)
#endif
    , clickCausedFocus(false)
    , viewportSize(QSize(0, 0))
    , inspectorFrontend(0)
    , inspector(0)
    , inspectorIsInternalOnly(false)
{
    WebCore::InitializeLoggingChannelsIfNecessary();
    JSC::initializeThreading();
    WebCore::SecurityOrigin::setLocalLoadPolicy(WebCore::SecurityOrigin::AllowLocalLoadsForLocalAndSubstituteData);

    chromeClient = new ChromeClientQt(q);
    contextMenuClient = new ContextMenuClientQt();
    editorClient = new EditorClientQt(q);
    page = new Page(chromeClient, contextMenuClient, editorClient,
                    new DragClientQt(q), new InspectorClientQt(q), 0, 0);

    settings = new QWebSettings(page->settings());

#ifndef QT_NO_UNDOSTACK
    undoStack = 0;
#endif
    mainFrame = 0;
    networkManager = 0;
    pluginFactory = 0;
    insideOpenCall = false;
    forwardUnsupportedContent = false;
    editable = false;
    useFixedLayout = false;
    linkPolicy = QWebPage::DontDelegateLinks;
#ifndef QT_NO_CONTEXTMENU
    currentContextMenu = 0;
#endif

    history.d = new QWebHistoryPrivate(page->backForwardList());
    memset(actions, 0, sizeof(actions));

    PageGroup::setShouldTrackVisitedLinks(true);
}

QWebPagePrivate::~QWebPagePrivate()
{
#ifndef QT_NO_CONTEXTMENU
    delete currentContextMenu;
#endif
#ifndef QT_NO_UNDOSTACK
    delete undoStack;
#endif
    delete settings;
    delete page;
}

WebCore::Page* QWebPagePrivate::core(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::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;
#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)
        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);
                    webcoreMenu->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.
    cache()->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->QObject::timerEvent(ev);
}

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

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

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

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

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

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

    bool accepted = false;
    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);
}

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

    RefPtr<WebCore::Node> oldNode;
    if (page->focusController()->focusedFrame()
        && page->focusController()->focusedFrame()->document())
        oldNode = page->focusController()->focusedFrame()->document()->focusedNode();

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

    bool accepted = false;
    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;
    if (page->focusController()->focusedFrame()
        && page->focusController()->focusedFrame()->document())
        newNode = page->focusController()->focusedFrame()->document()->focusedNode();

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

void QWebPagePrivate::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *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 = ev->pos().toPoint();
}

void QWebPagePrivate::mouseDoubleClickEvent(QMouseEvent *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 = ev->pos();
}

void QWebPagePrivate::mouseTripleClickEvent(QGraphicsSceneMouseEvent *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::mouseTripleClickEvent(QMouseEvent *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())) {
                focusFrame->editor()->copy();
                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
}

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

    bool accepted = false;
    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());
}

void QWebPagePrivate::handleSoftwareInputPanel(Qt::MouseButton button)
{
#if QT_VERSION >= QT_VERSION_CHECK(4, 6, 0)
    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) {
            QEvent event(QEvent::RequestSoftwareInputPanel);
            QApplication::sendEvent(client->ownerWidget(), &event);
        }
    }

    clickCausedFocus = false;
#endif
}

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

    bool accepted = false;
    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());
}

#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
void QWebPagePrivate::wheelEvent(QGraphicsSceneWheelEvent* ev)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

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

void QWebPagePrivate::wheelEvent(QWheelEvent *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;
        QFont defaultFont;
        if (client)
            defaultFont = client->ownerWidget()->font();
        QFontMetrics fm(defaultFont);
        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);
}

void QWebPagePrivate::dragEnterEvent(QGraphicsSceneDragDropEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), ev->pos().toPoint(),
            QCursor::pos(), dropActionToDragOp(ev->possibleActions()));
    Qt::DropAction action = dragOpToDropAction(page->dragController()->dragEntered(&dragData));
    ev->setDropAction(action);
    if (action != Qt::IgnoreAction)
        ev->accept();
#endif
}

void QWebPagePrivate::dragEnterEvent(QDragEnterEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), ev->pos(), QCursor::pos(),
                      dropActionToDragOp(ev->possibleActions()));
    Qt::DropAction action = dragOpToDropAction(page->dragController()->dragEntered(&dragData));
    ev->setDropAction(action);
    // We must accept this event in order to receive the drag move events that are sent
    // while the drag and drop action is in progress.
    ev->accept();
#endif
}

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

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

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

void QWebPagePrivate::dragMoveEvent(QDragMoveEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    DragData dragData(ev->mimeData(), ev->pos(), QCursor::pos(),
                      dropActionToDragOp(ev->possibleActions()));
    Qt::DropAction action = dragOpToDropAction(page->dragController()->dragUpdated(&dragData));
    m_lastDropAction = action;
    ev->setDropAction(action);
    // We must accept this event in order to receive the drag move events that are sent
    // while the drag and drop action is in progress.
    ev->accept();
#endif
}

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

void QWebPagePrivate::dropEvent(QDropEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    // Overwrite the defaults set by QDragManager::defaultAction()
    ev->setDropAction(m_lastDropAction);
    DragData dragData(ev->mimeData(), ev->pos(), QCursor::pos(),
                      dropActionToDragOp(Qt::DropAction(ev->dropAction())));
    if (page->dragController()->performDrag(&dragData))
        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;
    }

    RenderObject* renderer = 0;
    RenderTextControl* renderTextControl = 0;

    if (frame->selection()->rootEditableElement())
        renderer = frame->selection()->rootEditableElement()->shadowAncestorNode()->renderer();

    if (renderer && renderer->isTextControl())
        renderTextControl = toRenderTextControl(renderer);

    Vector<CompositionUnderline> underlines;

    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;
        }
#if QT_VERSION >= 0x040600
        case QInputMethodEvent::Selection: {
            if (renderTextControl) {
                renderTextControl->setSelectionStart(qMin(a.start, (a.start + a.length)));
                renderTextControl->setSelectionEnd(qMax(a.start, (a.start + a.length)));
            }
            break;
        }
#endif
        }
    }

    if (!ev->commitString().isEmpty())
        editor->confirmComposition(ev->commitString());
    else if (!ev->preeditString().isEmpty()) {
        QString preedit = ev->preeditString();
        editor->setComposition(preedit, underlines, preedit.length(), 0);
    }
    ev->accept();
}

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);
}

#if QT_VERSION >= QT_VERSION_CHECK(4, 6, 0)
void QWebPagePrivate::touchEvent(QTouchEvent* event)
{
    WebCore::Frame* frame = QWebFramePrivate::core(mainFrame);
    if (!frame->view())
        return;

    bool accepted = frame->eventHandler()->handleTouchEvent(PlatformTouchEvent(event));
    event->setAccepted(accepted);
}
#endif

/*!
  This method is used by the input method to query a set of properties of the page
  to be able to support complex input method operations as support for surrounding
  text and reconversions.

  \a property specifies which property is queried.

  \sa QWidget::inputMethodEvent(), QInputMethodEvent, QInputContext
*/
QVariant QWebPage::inputMethodQuery(Qt::InputMethodQuery property) const
{
    Frame* frame = d->page->focusController()->focusedFrame();
    if (!frame)
        return QVariant();

    WebCore::Editor* editor = frame->editor();

    RenderObject* renderer = 0;
    RenderTextControl* renderTextControl = 0;

    if (frame->selection()->rootEditableElement())
        renderer = frame->selection()->rootEditableElement()->shadowAncestorNode()->renderer();

    if (renderer && renderer->isTextControl())
        renderTextControl = toRenderTextControl(renderer);

    switch (property) {
        case Qt::ImMicroFocus: {
            WebCore::FrameView* view = frame->view();
            if (view && view->needsLayout()) {
                // We can't access absoluteCaretBounds() while the view needs to layout.
                return QVariant();
            }
            return QVariant(view->contentsToWindow(frame->selection()->absoluteCaretBounds()));
        }
        case Qt::ImFont: {
            if (renderTextControl) {
                RenderStyle* renderStyle = renderTextControl->style();
                return QVariant(QFont(renderStyle->font().font()));
            }
            return QVariant(QFont());
        }
        case Qt::ImCursorPosition: {
            if (renderTextControl) {
                if (editor->hasComposition()) {
                    RefPtr<Range> range = editor->compositionRange();
                    return QVariant(renderTextControl->selectionEnd() - TextIterator::rangeLength(range.get()));
                }
                return QVariant(renderTextControl->selectionEnd());
            }
            return QVariant();
        }
        case Qt::ImSurroundingText: {
            if (renderTextControl) {
                QString text = renderTextControl->text();
                RefPtr<Range> range = editor->compositionRange();
                if (range) {
                    text.remove(range->startPosition().offsetInContainerNode(), TextIterator::rangeLength(range.get()));
                }
                return QVariant(text);
            }
            return QVariant();
        }
        case Qt::ImCurrentSelection: {
            if (renderTextControl) {
                int start = renderTextControl->selectionStart();
                int end = renderTextControl->selectionEnd();
                if (end > start)
                    return QVariant(QString(renderTextControl->text()).mid(start,end-start));
            }
            return QVariant();

        }
#if QT_VERSION >= 0x040600
        case Qt::ImAnchorPosition: {
            if (renderTextControl) {
                if (editor->hasComposition()) {
                    RefPtr<Range> range = editor->compositionRange();
                    return QVariant(renderTextControl->selectionStart() - TextIterator::rangeLength(range.get()));
                }
                return QVariant(renderTextControl->selectionStart());
            }
            return QVariant();
        }
        case Qt::ImMaximumTextLength: {
            if (frame->selection()->isContentEditable()) {
                if (frame->document() && frame->document()->focusedNode()) {
                    if (frame->document()->focusedNode()->hasTagName(HTMLNames::inputTag)) {
                        HTMLInputElement* inputElement = static_cast<HTMLInputElement*>(frame->document()->focusedNode());
                        return QVariant(inputElement->maxLength());
                    }
                }
                return QVariant(InputElement::s_maximumLength);
            }
            return QVariant(0);
        }
#endif
        default:
            return QVariant();
    }
}

/*!
    \internal
*/
void QWebPagePrivate::setInspector(QWebInspector* insp)
{
    if (inspector)
        inspector->d->setFrontend(0);

    if (inspectorIsInternalOnly) {
        QWebInspector* inspToDelete = inspector;
        inspector = 0;
        inspectorIsInternalOnly = false;
        delete inspToDelete;    // Delete after to prevent infinite recursion
    }

    inspector = insp;

    // Give inspector frontend web view if previously created
    if (inspector && inspectorFrontend)
        inspector->d->setFrontend(inspectorFrontend);
}

/*!
    \internal
    Returns the inspector and creates it if it wasn't created yet.
    The instance created here will not be available through QWebPage's API.
*/
QWebInspector* QWebPagePrivate::getOrCreateInspector()
{
#if ENABLE(INSPECTOR)
    if (!inspector) {
        QWebInspector* insp = new QWebInspector;
        insp->setPage(q);
        inspectorIsInternalOnly = true;

        Q_ASSERT(inspector); // Associated through QWebInspector::setPage(q)
    }
#endif
    return inspector;
}

/*! \internal */
InspectorController* QWebPagePrivate::inspectorController()
{
#if ENABLE(INSPECTOR)
    return page->inspectorController();
#else
    return 0;
#endif
}


/*!
   \enum QWebPage::FindFlag

   This enum describes the options available to QWebPage's findText() function. The options
   can be OR-ed together from the following list:

   \value FindBackward Searches backwards instead of forwards.
   \value FindCaseSensitively By default findText() works case insensitive. Specifying this option
   changes the behaviour to a case sensitive find operation.
   \value FindWrapsAroundDocument Makes findText() restart from the beginning of the document if the end
   was reached and the text was not found.
   \value HighlightAllOccurrences Highlights all existing occurrences of a specific string.
*/

/*!
    \enum QWebPage::LinkDelegationPolicy

    This enum defines the delegation policies a webpage can have when activating links and emitting
    the linkClicked() signal.

    \value DontDelegateLinks No links are delegated. Instead, QWebPage tries to handle them all.
    \value DelegateExternalLinks When activating links that point to documents not stored on the
    local filesystem or an equivalent - such as the Qt resource system - then linkClicked() is emitted.
    \value DelegateAllLinks Whenever a link is activated the linkClicked() signal is emitted.
*/

/*!
    \enum QWebPage::NavigationType

    This enum describes the types of navigation available when browsing through hyperlinked
    documents.

    \value NavigationTypeLinkClicked The user clicked on a link or pressed return on a focused link.
    \value NavigationTypeFormSubmitted The user activated a submit button for an HTML form.
    \value NavigationTypeBackOrForward Navigation to a previously shown document in the back or forward history is requested.
    \value NavigationTypeReload The user activated the reload action.
    \value NavigationTypeFormResubmitted An HTML form was submitted a second time.
    \value NavigationTypeOther A navigation to another document using a method not listed above.
*/

/*!
    \enum QWebPage::WebAction

    This enum describes the types of action which can be performed on the web page.

    Actions only have an effect when they are applicable. The availability of
    actions can be be determined by checking \l{QAction::}{isEnabled()} on the
    action returned by \l{QWebPage::}{action()}.

    One method of enabling the text editing, cursor movement, and text selection actions
    is by setting \l contentEditable to true.

    \value NoWebAction No action is triggered.
    \value OpenLink Open the current link.
    \value OpenLinkInNewWindow Open the current link in a new window.
    \value OpenFrameInNewWindow Replicate the current frame in a new window.
    \value DownloadLinkToDisk Download the current link to the disk.
    \value CopyLinkToClipboard Copy the current link to the clipboard.
    \value OpenImageInNewWindow Open the highlighted image in a new window.
    \value DownloadImageToDisk Download the highlighted image to the disk.
    \value CopyImageToClipboard Copy the highlighted image to the clipboard.
    \value Back Navigate back in the history of navigated links.
    \value Forward Navigate forward in the history of navigated links.
    \value Stop Stop loading the current page.
    \value Reload Reload the current page.
    \value ReloadAndBypassCache Reload the current page, but do not use any local cache. (Added in Qt 4.6)
    \value Cut Cut the content currently selected into the clipboard.
    \value Copy Copy the content currently selected into the clipboard.
    \value Paste Paste content from the clipboard.
    \value Undo Undo the last editing action.
    \value Redo Redo the last editing action.
    \value MoveToNextChar Move the cursor to the next character.
    \value MoveToPreviousChar Move the cursor to the previous character.
    \value MoveToNextWord Move the cursor to the next word.
    \value MoveToPreviousWord Move the cursor to the previous word.
    \value MoveToNextLine Move the cursor to the next line.
    \value MoveToPreviousLine Move the cursor to the previous line.
    \value MoveToStartOfLine Move the cursor to the start of the line.
    \value MoveToEndOfLine Move the cursor to the end of the line.
    \value MoveToStartOfBlock Move the cursor to the start of the block.
    \value MoveToEndOfBlock Move the cursor to the end of the block.
    \value MoveToStartOfDocument Move the cursor to the start of the document.
    \value MoveToEndOfDocument Move the cursor to the end of the document.
    \value SelectNextChar Select to the next character.
    \value SelectPreviousChar Select to the previous character.
    \value SelectNextWord Select to the next word.
    \value SelectPreviousWord Select to the previous word.
    \value SelectNextLine Select to the next line.
    \value SelectPreviousLine Select to the previous line.
    \value SelectStartOfLine Select to the start of the line.
    \value SelectEndOfLine Select to the end of the line.
    \value SelectStartOfBlock Select to the start of the block.
    \value SelectEndOfBlock Select to the end of the block.
    \value SelectStartOfDocument Select to the start of the document.
    \value SelectEndOfDocument Select to the end of the document.
    \value DeleteStartOfWord Delete to the start of the word.
    \value DeleteEndOfWord Delete to the end of the word.
    \value SetTextDirectionDefault Set the text direction to the default direction.
    \value SetTextDirectionLeftToRight Set the text direction to left-to-right.
    \value SetTextDirectionRightToLeft Set the text direction to right-to-left.
    \value ToggleBold Toggle the formatting between bold and normal weight.
    \value ToggleItalic Toggle the formatting between italic and normal style.
    \value ToggleUnderline Toggle underlining.
    \value InspectElement Show the Web Inspector with the currently highlighted HTML element.
    \value InsertParagraphSeparator Insert a new paragraph.
    \value InsertLineSeparator Insert a new line.
    \value SelectAll Selects all content.
    \value PasteAndMatchStyle Paste content from the clipboard with current style.
    \value RemoveFormat Removes formatting and style.
    \value ToggleStrikethrough Toggle the formatting between strikethrough and normal style.
    \value ToggleSubscript Toggle the formatting between subscript and baseline.
    \value ToggleSuperscript Toggle the formatting between supercript and baseline.
    \value InsertUnorderedList Toggles the selection between an ordered list and a normal block.
    \value InsertOrderedList Toggles the selection between an ordered list and a normal block.
    \value Indent Increases the indentation of the currently selected format block by one increment.
    \value Outdent Decreases the indentation of the currently selected format block by one increment.
    \value AlignCenter Applies center alignment to content.
    \value AlignJustified Applies full justification to content.
    \value AlignLeft Applies left justification to content.
    \value AlignRight Applies right justification to content.


    \omitvalue WebActionCount

*/

/*!
    \enum QWebPage::WebWindowType

    \value WebBrowserWindow The window is a regular web browser window.
    \value WebModalDialog The window acts as modal dialog.
*/

/*!
    \class QWebPage
    \since 4.4
    \brief The QWebPage class provides an object to view and edit web documents.

    \inmodule QtWebKit

    QWebPage holds a main frame responsible for web content, settings, the history
    of navigated links and actions. This class can be used, together with QWebFrame,
    to provide functionality like QWebView in a widget-less environment.

    QWebPage's API is very similar to QWebView, as you are still provided with
    common functions like action() (known as \l{QWebView::}{pageAction()} in
    QWebView), triggerAction(), findText() and settings(). More QWebView-like
    functions can be found in the main frame of QWebPage, obtained via
    QWebPage::mainFrame(). For example, the load(), setUrl() and setHtml()
    unctions for QWebPage can be accessed using QWebFrame.

    The loadStarted() signal is emitted when the page begins to load.The
    loadProgress() signal, on the other hand, is emitted whenever an element
    of the web page completes loading, such as an embedded image, a script,
    etc. Finally, the loadFinished() signal is emitted when the page has
    loaded completely. Its argument, either true or false, indicates whether
    or not the load operation succeeded.

    \section1 Using QWebPage in a Widget-less Environment

    Before you begin painting a QWebPage object, you need to set the size of
    the viewport by calling setViewportSize(). Then, you invoke the main
    frame's render function (QWebFrame::render()). An example of this
    is shown in the code snippet below.

    Suppose we have a \c Thumbnail class as follows:

    \snippet webkitsnippets/webpage/main.cpp 0

    The \c Thumbnail's constructor takes in a \a url. We connect our QWebPage
    object's \l{QWebPage::}{loadFinished()} signal to our private slot,
    \c render().

    \snippet webkitsnippets/webpage/main.cpp 1

    The \c render() function shows how we can paint a thumbnail using a
    QWebPage object.

    \snippet webkitsnippets/webpage/main.cpp 2

    We begin by setting the \l{QWebPage::viewportSize()}{viewportSize} and
    then we instantiate a QImage object, \c image, with the same size as our
    \l{QWebPage::viewportSize()}{viewportSize}. This image is then sent
    as a parameter to \c painter. Next, we render the contents of the main
    frame and its subframes into \c painter. Finally, we save the scaled image.

    \sa QWebFrame
*/

/*!
    Constructs an empty QWebPage with parent \a parent.
*/
QWebPage::QWebPage(QObject *parent)
    : QObject(parent)
    , d(new QWebPagePrivate(this))
{
    setView(qobject_cast<QWidget*>(parent));

    connect(this, SIGNAL(loadProgress(int)), this, SLOT(_q_onLoadProgressChanged(int)));
#ifndef NDEBUG
    connect(QCoreApplication::instance(), SIGNAL(aboutToQuit()), this, SLOT(_q_cleanupLeakMessages()));
#endif
}

/*!
    Destroys the web page.
*/
QWebPage::~QWebPage()
{
    d->createMainFrame();
    FrameLoader *loader = d->mainFrame->d->frame->loader();
    if (loader)
        loader->detachFromParent();
    if (d->inspector) {
        // Since we have to delete an internal inspector,
        // call setInspector(0) directly to prevent potential crashes
        if (d->inspectorIsInternalOnly)
            d->setInspector(0);
        else
            d->inspector->setPage(0);
    }
    delete d;
}

/*!
    Returns the main frame of the page.

    The main frame provides access to the hierarchy of sub-frames and is also needed if you
    want to explicitly render a web page into a given painter.

    \sa currentFrame()
*/
QWebFrame *QWebPage::mainFrame() const
{
    d->createMainFrame();
    return d->mainFrame;
}

/*!
    Returns the frame currently active.

    \sa mainFrame(), frameCreated()
*/
QWebFrame *QWebPage::currentFrame() const
{
    d->createMainFrame();
    return static_cast<WebCore::FrameLoaderClientQt *>(d->page->focusController()->focusedOrMainFrame()->loader()->client())->webFrame();
}


/*!
    \since 4.6

    Returns the frame at the given point \a pos.

    \sa mainFrame(), currentFrame()
*/
QWebFrame* QWebPage::frameAt(const QPoint& pos) const
{
    QWebFrame* webFrame = mainFrame();
    if (!webFrame->geometry().contains(pos))
        return 0;
    QWebHitTestResult hitTestResult = webFrame->hitTestContent(pos);
    return hitTestResult.frame();
}

/*!
    Returns a pointer to the view's history of navigated web pages.
*/
QWebHistory *QWebPage::history() const
{
    d->createMainFrame();
    return &d->history;
}

/*!
    Sets the \a view that is associated with the web page.

    \sa view()
*/
void QWebPage::setView(QWidget* view)
{
    if (this->view() == view)
        return;

    d->view = view;
    setViewportSize(view ? view->size() : QSize(0, 0));

    // If we have no client, we install a special client delegating
    // the responsibility to the QWidget. This is the code path
    // handling a.o. the "legacy" QWebView.
    //
    // If such a special delegate already exist, we substitute the view.

    if (d->client) {
        if (d->client->isQWidgetClient())
            static_cast<QWebPageWidgetClient*>(d->client)->view = view;
        return;
    }

    if (view)
        d->client = new QWebPageWidgetClient(view);
}

/*!
    Returns the view widget that is associated with the web page.

    \sa setView()
*/
QWidget *QWebPage::view() const
{
#if QT_VERSION < 0x040600
    return d->view;
#else
    return d->view.data();
#endif
}

/*!
    This function is called whenever a JavaScript program tries to print a \a message to the web browser's console.

    For example in case of evaluation errors the source URL may be provided in \a sourceID as well as the \a lineNumber.

    The default implementation prints nothing.
*/
void QWebPage::javaScriptConsoleMessage(const QString& message, int lineNumber, const QString& sourceID)
{
    Q_UNUSED(message)
    Q_UNUSED(lineNumber)
    Q_UNUSED(sourceID)
}

/*!
    This function is called whenever a JavaScript program running inside \a frame calls the alert() function with
    the message \a msg.

    The default implementation shows the message, \a msg, with QMessageBox::information.
*/
void QWebPage::javaScriptAlert(QWebFrame *frame, const QString& msg)
{
    Q_UNUSED(frame)
#ifndef QT_NO_MESSAGEBOX
    QWidget* parent = (d->client) ? d->client->ownerWidget() : 0;
    QMessageBox::information(parent, tr("JavaScript Alert - %1").arg(mainFrame()->url().host()), Qt::escape(msg), QMessageBox::Ok);
#endif
}

/*!
    This function is called whenever a JavaScript program running inside \a frame calls the confirm() function
    with the message, \a msg. Returns true if the user confirms the message; otherwise returns false.

    The default implementation executes the query using QMessageBox::information with QMessageBox::Yes and QMessageBox::No buttons.
*/
bool QWebPage::javaScriptConfirm(QWebFrame *frame, const QString& msg)
{
    Q_UNUSED(frame)
#ifdef QT_NO_MESSAGEBOX
    return true;
#else
    QWidget* parent = (d->client) ? d->client->ownerWidget() : 0;
    return QMessageBox::Yes == QMessageBox::information(parent, tr("JavaScript Confirm - %1").arg(mainFrame()->url().host()), Qt::escape(msg), QMessageBox::Yes, QMessageBox::No);
#endif
}

/*!
    This function is called whenever a JavaScript program running inside \a frame tries to prompt the user for input.
    The program may provide an optional message, \a msg, as well as a default value for the input in \a defaultValue.

    If the prompt was cancelled by the user the implementation should return false; otherwise the
    result should be written to \a result and true should be returned. If the prompt was not cancelled by the
    user, the implementation should return true and the result string must not be null.

    The default implementation uses QInputDialog::getText.
*/
bool QWebPage::javaScriptPrompt(QWebFrame *frame, const QString& msg, const QString& defaultValue, QString* result)
{
    Q_UNUSED(frame)
    bool ok = false;
#ifndef QT_NO_INPUTDIALOG
    QWidget* parent = (d->client) ? d->client->ownerWidget() : 0;
    QString x = QInputDialog::getText(parent, tr("JavaScript Prompt - %1").arg(mainFrame()->url().host()), Qt::escape(msg), QLineEdit::Normal, defaultValue, &ok);
    if (ok && result)
        *result = x;
#endif
    return ok;
}

/*!
    \fn bool QWebPage::shouldInterruptJavaScript()
    \since 4.6
    This function is called when a JavaScript program is running for a long period of time.

    If the user wanted to stop the JavaScript the implementation should return true; otherwise false.

    The default implementation executes the query using QMessageBox::information with QMessageBox::Yes and QMessageBox::No buttons.

    \warning Because of binary compatibility constraints, this function is not virtual. If you want to
    provide your own implementation in a QWebPage subclass, reimplement the shouldInterruptJavaScript()
    slot in your subclass instead. QtWebKit will dynamically detect the slot and call it.
*/
bool QWebPage::shouldInterruptJavaScript()
{
#ifdef QT_NO_MESSAGEBOX
    return false;
#else
    QWidget* parent = (d->client) ? d->client->ownerWidget() : 0;
    return QMessageBox::Yes == QMessageBox::information(parent, tr("JavaScript Problem - %1").arg(mainFrame()->url().host()), tr("The script on this page appears to have a problem. Do you want to stop the script?"), QMessageBox::Yes, QMessageBox::No);
#endif
}

/*!
    This function is called whenever WebKit wants to create a new window of the given \a type, for
    example when a JavaScript program requests to open a document in a new window.

    If the new window can be created, the new window's QWebPage is returned; otherwise a null pointer is returned.

    If the view associated with the web page is a QWebView object, then the default implementation forwards
    the request to QWebView's createWindow() function; otherwise it returns a null pointer.

    If \a type is WebModalDialog, the application must call setWindowModality(Qt::ApplicationModal) on the new window.

    \sa acceptNavigationRequest()
*/
QWebPage *QWebPage::createWindow(WebWindowType type)
{
    QWebView *webView = qobject_cast<QWebView*>(view());
    if (webView) {
        QWebView *newView = webView->createWindow(type);
        if (newView)
            return newView->page();
    }
    return 0;
}

/*!
    This function is called whenever WebKit encounters a HTML object element with type "application/x-qt-plugin". It is
    called regardless of the value of QWebSettings::PluginsEnabled. The \a classid, \a url, \a paramNames and \a paramValues
    correspond to the HTML object element attributes and child elements to configure the embeddable object.
*/
QObject *QWebPage::createPlugin(const QString &classid, const QUrl &url, const QStringList &paramNames, const QStringList &paramValues)
{
    Q_UNUSED(classid)
    Q_UNUSED(url)
    Q_UNUSED(paramNames)
    Q_UNUSED(paramValues)
    return 0;
}

static WebCore::FrameLoadRequest frameLoadRequest(const QUrl &url, WebCore::Frame *frame)
{
    WebCore::ResourceRequest rr(url, frame->loader()->outgoingReferrer());
    return WebCore::FrameLoadRequest(rr);
}

static void openNewWindow(const QUrl& url, WebCore::Frame* frame)
{
    if (Page* oldPage = frame->page()) {
        WindowFeatures features;
        if (Page* newPage = oldPage->chrome()->createWindow(frame,
                frameLoadRequest(url, frame), features))
            newPage->chrome()->show();
    }
}

/*!
    This function can be called to trigger the specified \a action.
    It is also called by QtWebKit if the user triggers the action, for example
    through a context menu item.

    If \a action is a checkable action then \a checked specified whether the action
    is toggled or not.

    \sa action()
*/
void QWebPage::triggerAction(WebAction action, bool)
{
    WebCore::Frame *frame = d->page->focusController()->focusedOrMainFrame();
    if (!frame)
        return;
    WebCore::Editor *editor = frame->editor();
    const char *command = 0;

    switch (action) {
        case OpenLink:
            if (QWebFrame *targetFrame = d->hitTestResult.linkTargetFrame()) {
                WTF::RefPtr<WebCore::Frame> wcFrame = targetFrame->d->frame;
                targetFrame->d->frame->loader()->loadFrameRequest(frameLoadRequest(d->hitTestResult.linkUrl(), wcFrame.get()),
                                                                  /*lockHistory*/ false, /*lockBackForwardList*/ false, /*event*/ 0,
                                                                  /*FormState*/ 0, SendReferrer);
                break;
            }
            // fall through
        case OpenLinkInNewWindow:
            openNewWindow(d->hitTestResult.linkUrl(), frame);
            break;
        case OpenFrameInNewWindow: {
            KURL url = frame->loader()->documentLoader()->unreachableURL();
            if (url.isEmpty())
                url = frame->loader()->documentLoader()->url();
            openNewWindow(url, frame);
            break;
        }
        case CopyLinkToClipboard: {
#if defined(Q_WS_X11)
            bool oldSelectionMode = Pasteboard::generalPasteboard()->isSelectionMode();
            Pasteboard::generalPasteboard()->setSelectionMode(true);
            editor->copyURL(d->hitTestResult.linkUrl(), d->hitTestResult.linkText());
            Pasteboard::generalPasteboard()->setSelectionMode(oldSelectionMode);
#endif
            editor->copyURL(d->hitTestResult.linkUrl(), d->hitTestResult.linkText());
            break;
        }
        case OpenImageInNewWindow:
            openNewWindow(d->hitTestResult.imageUrl(), frame);
            break;
        case DownloadImageToDisk:
            frame->loader()->client()->startDownload(WebCore::ResourceRequest(d->hitTestResult.imageUrl(), frame->loader()->outgoingReferrer()));
            break;
        case DownloadLinkToDisk:
            frame->loader()->client()->startDownload(WebCore::ResourceRequest(d->hitTestResult.linkUrl(), frame->loader()->outgoingReferrer()));
            break;
#ifndef QT_NO_CLIPBOARD
        case CopyImageToClipboard:
            QApplication::clipboard()->setPixmap(d->hitTestResult.pixmap());
            break;
#endif
        case Back:
            d->page->goBack();
            break;
        case Forward:
            d->page->goForward();
            break;
        case Stop:
            mainFrame()->d->frame->loader()->stopForUserCancel();
            break;
        case Reload:
            mainFrame()->d->frame->loader()->reload(/*endtoendreload*/false);
            break;
        case ReloadAndBypassCache:
            mainFrame()->d->frame->loader()->reload(/*endtoendreload*/true);
            break;
        case SetTextDirectionDefault:
            editor->setBaseWritingDirection(NaturalWritingDirection);
            break;
        case SetTextDirectionLeftToRight:
            editor->setBaseWritingDirection(LeftToRightWritingDirection);
            break;
        case SetTextDirectionRightToLeft:
            editor->setBaseWritingDirection(RightToLeftWritingDirection);
            break;
        case InspectElement: {
#if ENABLE(INSPECTOR)
            if (!d->hitTestResult.isNull()) {
                d->getOrCreateInspector(); // Make sure the inspector is created
                d->inspector->show(); // The inspector is expected to be shown on inspection
                d->page->inspectorController()->inspect(d->hitTestResult.d->innerNonSharedNode.get());
            }
#endif
            break;
        }
        default:
            command = QWebPagePrivate::editorCommandForWebActions(action);
            break;
    }

    if (command)
        editor->command(command).execute();
}

QSize QWebPage::viewportSize() const
{
    if (d->mainFrame && d->mainFrame->d->frame->view())
        return d->mainFrame->d->frame->view()->frameRect().size();

    return d->viewportSize;
}

/*!
    \property QWebPage::viewportSize
    \brief the size of the viewport

    The size affects for example the visibility of scrollbars
    if the document is larger than the viewport.

    By default, for a newly-created Web page, this property contains a size with
    zero width and height.
*/
void QWebPage::setViewportSize(const QSize &size) const
{
    d->viewportSize = size;

    QWebFrame *frame = mainFrame();
    if (frame->d->frame && frame->d->frame->view()) {
        WebCore::FrameView* view = frame->d->frame->view();
        view->setFrameRect(QRect(QPoint(0, 0), size));
        view->adjustViewSize();
    }
}

QSize QWebPage::preferredContentsSize() const
{
    QWebFrame* frame = d->mainFrame;
    if (frame) {
        WebCore::FrameView* view = frame->d->frame->view();
        if (view && view->useFixedLayout())
            return d->mainFrame->d->frame->view()->fixedLayoutSize();
    }

    return d->fixedLayoutSize;
}

/*!
    \property QWebPage::preferredContentsSize
    \since 4.6
    \brief the size of the fixed layout

    The size affects the layout of the page in the viewport.  If set to a fixed size of
    1024x768 for example then webkit will layout the page as if the viewport were that size
    rather than something different.
*/
void QWebPage::setPreferredContentsSize(const QSize &size) const
{
    d->fixedLayoutSize = size;

    QWebFrame *frame = mainFrame();
    if (frame->d->frame && frame->d->frame->view()) {
        WebCore::FrameView* view = frame->d->frame->view();

        if (size.isValid()) {
            view->setUseFixedLayout(true);
            view->setFixedLayoutSize(size);
            view->forceLayout();
        } else if (view->useFixedLayout()) {
            view->setUseFixedLayout(false);
            view->forceLayout();
        }
    }
}

/*!
    \fn bool QWebPage::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type)

    This function is called whenever WebKit requests to navigate \a frame to the resource specified by \a request by means of
    the specified navigation type \a type.

    If \a frame is a null pointer then navigation to a new window is requested. If the request is
    accepted createWindow() will be called.

    The default implementation interprets the page's linkDelegationPolicy and emits linkClicked accordingly or returns true
    to let QWebPage handle the navigation itself.

    \sa createWindow()
*/
bool QWebPage::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request, QWebPage::NavigationType type)
{
    Q_UNUSED(frame)
    if (type == NavigationTypeLinkClicked) {
        switch (d->linkPolicy) {
            case DontDelegateLinks:
                return true;