/*
    Copyright (C) 2012, 2013 Digia Plc and/or its subsidiary(-ies).
    Copyright (C) 2008, 2009, 2012 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 "qwebenginepage.h"
#include "qwebenginepage_p.h"

#include "browser_context_adapter.h"
#include "certificate_error_controller.h"
#include "javascript_dialog_controller.h"
#include "qwebenginehistory.h"
#include "qwebenginehistory_p.h"
#include "qwebengineprofile.h"
#include "qwebengineprofile_p.h"
#include "qwebenginesettings.h"
#include "qwebengineview.h"
#include "qwebengineview_p.h"
#include "render_widget_host_view_qt_delegate_widget.h"
#include "web_contents_adapter.h"
#include "web_engine_settings.h"

#include <QAction>
#include <QApplication>
#include <QAuthenticator>
#include <QClipboard>
#include <QFileDialog>
#include <QIcon>
#include <QInputDialog>
#include <QLayout>
#include <QMenu>
#include <QMessageBox>
#include <QStandardPaths>
#include <QStyle>
#include <QUrl>

QT_BEGIN_NAMESPACE

static QWebEnginePage::WebWindowType toWindowType(WebContentsAdapterClient::WindowOpenDisposition disposition)
{
    switch (disposition) {
    case WebContentsAdapterClient::NewForegroundTabDisposition:
    case WebContentsAdapterClient::NewBackgroundTabDisposition:
        return QWebEnginePage::WebBrowserTab;
    case WebContentsAdapterClient::NewPopupDisposition:
        return QWebEnginePage::WebDialog;
    case WebContentsAdapterClient::NewWindowDisposition:
        return QWebEnginePage::WebBrowserWindow;
    default:
        Q_UNREACHABLE();
    }
}

CallbackDirectory::~CallbackDirectory()
{
    // "Cancel" pending callbacks by calling them with an invalid value.
    // This guarantees that each callback is called exactly once.
    Q_FOREACH (const CallbackSharedDataPointer &sharedPtr, m_callbackMap) {
        switch (sharedPtr.type) {
        case CallbackSharedDataPointer::Variant:
            (*sharedPtr.variantCallback)(QVariant());
            break;
        case CallbackSharedDataPointer::String:
            (*sharedPtr.stringCallback)(QString());
            break;
        case CallbackSharedDataPointer::Bool:
            (*sharedPtr.boolCallback)(false);
            break;
        default:
            Q_UNREACHABLE();
        }
    }
}

void CallbackDirectory::registerCallback(quint64 requestId, const QExplicitlySharedDataPointer<VariantCallback> &callback)
{
    m_callbackMap.insert(requestId, CallbackSharedDataPointer(callback.data()));
}

void CallbackDirectory::registerCallback(quint64 requestId, const QExplicitlySharedDataPointer<StringCallback> &callback)
{
    m_callbackMap.insert(requestId, CallbackSharedDataPointer(callback.data()));
}

void CallbackDirectory::registerCallback(quint64 requestId, const QExplicitlySharedDataPointer<BoolCallback> &callback)
{
    m_callbackMap.insert(requestId, CallbackSharedDataPointer(callback.data()));
}

void CallbackDirectory::invoke(quint64 requestId, const QVariant &result)
{
    CallbackSharedDataPointer sharedPtr = m_callbackMap.take(requestId);
    if (sharedPtr) {
        Q_ASSERT(sharedPtr.type == CallbackSharedDataPointer::Variant);
        (*sharedPtr.variantCallback)(result);
    }
}

void CallbackDirectory::invoke(quint64 requestId, const QString &result)
{
    CallbackSharedDataPointer sharedPtr = m_callbackMap.take(requestId);
    if (sharedPtr) {
        Q_ASSERT(sharedPtr.type == CallbackSharedDataPointer::String);
        (*sharedPtr.stringCallback)(result);
    }
}

void CallbackDirectory::invoke(quint64 requestId, bool result)
{
    CallbackSharedDataPointer sharedPtr = m_callbackMap.take(requestId);
    if (sharedPtr) {
        Q_ASSERT(sharedPtr.type == CallbackSharedDataPointer::Bool);
        (*sharedPtr.boolCallback)(result);
    }
}

void CallbackDirectory::CallbackSharedDataPointer::doRef()
{
    switch (type) {
    case None:
        break;
    case Variant:
        variantCallback->ref.ref();
        break;
    case String:
        stringCallback->ref.ref();
        break;
    case Bool:
        boolCallback->ref.ref();
        break;
    }
}

void CallbackDirectory::CallbackSharedDataPointer::doDeref()
{
    switch (type) {
    case None:
        break;
    case Variant:
        if (!variantCallback->ref.deref())
            delete variantCallback;
        break;
    case String:
        if (!stringCallback->ref.deref())
            delete stringCallback;
        break;
    case Bool:
        if (!boolCallback->ref.deref())
            delete boolCallback;
        break;
    }
}

QWebEnginePagePrivate::QWebEnginePagePrivate(QWebEngineProfile *_profile)
    : adapter(new WebContentsAdapter)
    , history(new QWebEngineHistory(new QWebEngineHistoryPrivate(this)))
    , profile(_profile ? _profile : QWebEngineProfile::defaultProfile())
    , settings(new QWebEngineSettings(profile->settings()))
    , view(0)
    , isLoading(false)
{
    memset(actions, 0, sizeof(actions));
}

QWebEnginePagePrivate::~QWebEnginePagePrivate()
{
    delete history;
    delete settings;
}

RenderWidgetHostViewQtDelegate *QWebEnginePagePrivate::CreateRenderWidgetHostViewQtDelegate(RenderWidgetHostViewQtDelegateClient *client)
{
    return new RenderWidgetHostViewQtDelegateWidget(client);
}

void QWebEnginePagePrivate::titleChanged(const QString &title)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->titleChanged(title);
}

void QWebEnginePagePrivate::urlChanged(const QUrl &url)
{
    Q_Q(QWebEnginePage);
    explicitUrl = QUrl();
    Q_EMIT q->urlChanged(url);
}

void QWebEnginePagePrivate::iconChanged(const QUrl &url)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->iconUrlChanged(url);
}

void QWebEnginePagePrivate::loadProgressChanged(int progress)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->loadProgress(progress);
}

void QWebEnginePagePrivate::didUpdateTargetURL(const QUrl &hoveredUrl)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->linkHovered(hoveredUrl.toString());
}

void QWebEnginePagePrivate::selectionChanged()
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->selectionChanged();
}

QRectF QWebEnginePagePrivate::viewportRect() const
{
    return view ? view->rect() : QRectF();
}

qreal QWebEnginePagePrivate::dpiScale() const
{
    return 1.0;
}

void QWebEnginePagePrivate::loadStarted(const QUrl &provisionalUrl)
{
    Q_UNUSED(provisionalUrl)
    Q_Q(QWebEnginePage);
    isLoading = true;
    Q_EMIT q->loadStarted();
    updateNavigationActions();
}

void QWebEnginePagePrivate::loadCommitted()
{
    updateNavigationActions();
}

void QWebEnginePagePrivate::loadFinished(bool success, const QUrl &url, int errorCode, const QString &errorDescription)
{
    Q_Q(QWebEnginePage);
    Q_UNUSED(url);
    Q_UNUSED(errorCode);
    Q_UNUSED(errorDescription);
    isLoading = false;
    if (success)
        explicitUrl = QUrl();
    Q_EMIT q->loadFinished(success);
    updateNavigationActions();
}

void QWebEnginePagePrivate::focusContainer()
{
    if (view)
        view->setFocus();
}

void QWebEnginePagePrivate::unhandledKeyEvent(QKeyEvent *event)
{
    if (view && view->parentWidget())
        QGuiApplication::sendEvent(view->parentWidget(), event);
}

void QWebEnginePagePrivate::adoptNewWindow(WebContentsAdapter *newWebContents, WindowOpenDisposition disposition, bool userGesture, const QRect &initialGeometry)
{
    Q_Q(QWebEnginePage);
    Q_UNUSED(userGesture);
    QWebEnginePage *newPage = q->createWindow(toWindowType(disposition));
    // Overwrite the new page's WebContents with ours.
    if (newPage && newPage->d_func() != this) {
        newPage->d_func()->adapter = newWebContents;
        newWebContents->initialize(newPage->d_func());
        if (!initialGeometry.isEmpty())
            emit newPage->geometryChangeRequested(initialGeometry);
    }
}

void QWebEnginePagePrivate::close()
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->windowCloseRequested();
}

void QWebEnginePagePrivate::didRunJavaScript(quint64 requestId, const QVariant& result)
{
    m_callbacks.invoke(requestId, result);
}

void QWebEnginePagePrivate::didFetchDocumentMarkup(quint64 requestId, const QString& result)
{
    m_callbacks.invoke(requestId, result);
}

void QWebEnginePagePrivate::didFetchDocumentInnerText(quint64 requestId, const QString& result)
{
    m_callbacks.invoke(requestId, result);
}

void QWebEnginePagePrivate::didFindText(quint64 requestId, int matchCount)
{
    m_callbacks.invoke(requestId, matchCount > 0);
}

void QWebEnginePagePrivate::passOnFocus(bool reverse)
{
    if (view)
        view->focusNextPrevChild(!reverse);
}

void QWebEnginePagePrivate::authenticationRequired(const QUrl &requestUrl, const QString &realm, bool isProxy, const QString &challengingHost, QString *outUser, QString *outPassword)
{
    Q_Q(QWebEnginePage);
    QAuthenticator networkAuth;
    networkAuth.setRealm(realm);

    if (isProxy)
        Q_EMIT q->proxyAuthenticationRequired(requestUrl, &networkAuth, challengingHost);
    else
        Q_EMIT q->authenticationRequired(requestUrl, &networkAuth);
    *outUser = networkAuth.user();
    *outPassword = networkAuth.password();
}

void QWebEnginePagePrivate::runMediaAccessPermissionRequest(const QUrl &securityOrigin, WebContentsAdapterClient::MediaRequestFlags requestFlags)
{
    Q_Q(QWebEnginePage);
    QWebEnginePage::Feature requestedFeature;
    if (requestFlags.testFlag(WebContentsAdapterClient::MediaAudioCapture) && requestFlags.testFlag(WebContentsAdapterClient::MediaVideoCapture))
        requestedFeature = QWebEnginePage::MediaAudioVideoCapture;
    else if (requestFlags.testFlag(WebContentsAdapterClient::MediaAudioCapture))
        requestedFeature = QWebEnginePage::MediaAudioCapture;
    else if (requestFlags.testFlag(WebContentsAdapterClient::MediaVideoCapture))
        requestedFeature = QWebEnginePage::MediaVideoCapture;
    else
        return;
    Q_EMIT q->featurePermissionRequested(securityOrigin, requestedFeature);
}

void QWebEnginePagePrivate::runGeolocationPermissionRequest(const QUrl &securityOrigin)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->featurePermissionRequested(securityOrigin, QWebEnginePage::Geolocation);
}

void QWebEnginePagePrivate::runMouseLockPermissionRequest(const QUrl &securityOrigin)
{
    Q_Q(QWebEnginePage);
    Q_EMIT q->featurePermissionRequested(securityOrigin, QWebEnginePage::MouseLock);
}

#ifndef QT_NO_ACCESSIBILITY
QObject *QWebEnginePagePrivate::accessibilityParentObject()
{
    return view;
}
#endif // QT_NO_ACCESSIBILITY

void QWebEnginePagePrivate::updateAction(QWebEnginePage::WebAction action) const
{
#ifdef QT_NO_ACTION
    Q_UNUSED(action)
#else
    QAction *a = actions[action];
    if (!a)
        return;

    bool enabled = true;

    switch (action) {
    case QWebEnginePage::Back:
        enabled = adapter->canGoBack();
        break;
    case QWebEnginePage::Forward:
        enabled = adapter->canGoForward();
        break;
    case QWebEnginePage::Stop:
        enabled = isLoading;
        break;
    case QWebEnginePage::Reload:
    case QWebEnginePage::ReloadAndBypassCache:
        enabled = !isLoading;
        break;
    default:
        break;
    }

    a->setEnabled(enabled);
#endif // QT_NO_ACTION
}

void QWebEnginePagePrivate::updateNavigationActions()
{
    updateAction(QWebEnginePage::Back);
    updateAction(QWebEnginePage::Forward);
    updateAction(QWebEnginePage::Stop);
    updateAction(QWebEnginePage::Reload);
    updateAction(QWebEnginePage::ReloadAndBypassCache);
}

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

void QWebEnginePagePrivate::recreateFromSerializedHistory(QDataStream &input)
{
    QExplicitlySharedDataPointer<WebContentsAdapter> newWebContents = WebContentsAdapter::createFromSerializedNavigationHistory(input, this);
    if (newWebContents) {
        adapter = newWebContents.data();
        adapter->initialize(this);
    }
}

BrowserContextAdapter *QWebEnginePagePrivate::browserContextAdapter()
{
    return profile->d_ptr->browserContext();
}

QWebEnginePage::QWebEnginePage(QObject* parent)
    : QObject(parent)
    , d_ptr(new QWebEnginePagePrivate())
{
    Q_D(QWebEnginePage);
    d->q_ptr = this;
    d->adapter->initialize(d);
}

/*!
    Constructs an empty QWebEnginePage in the QWebEngineProfile \a profile with parent \a parent.

    If the profile is not the default profile the caller must ensure the profile is alive for as
    long as the page is.

    \since 5.5
*/
QWebEnginePage::QWebEnginePage(QWebEngineProfile *profile, QObject* parent)
    : QObject(parent)
    , d_ptr(new QWebEnginePagePrivate(profile))
{
    Q_D(QWebEnginePage);
    d->q_ptr = this;
    d->adapter->initialize(d);
}

QWebEnginePage::~QWebEnginePage()
{
    Q_D(QWebEnginePage);
    QWebEngineViewPrivate::bind(d->view, 0);
}

QWebEngineHistory *QWebEnginePage::history() const
{
    Q_D(const QWebEnginePage);
    return d->history;
}

QWebEngineSettings *QWebEnginePage::settings() const
{
    Q_D(const QWebEnginePage);
    return d->settings;
}

/*!
 * Returns a pointer to the web channel instance used by this page, or a null pointer if none was set.
 * This channel is automatically using the internal QtWebEngine transport mechanism over Chromium IPC,
 * and exposed in the javascript context of this page as  \c navigator.qtWebChannelTransport
 *
 * \since 5.5
 * \sa {QtWebChannel::QWebChannel}{QWebChannel}
 */
QWebChannel *QWebEnginePage::webChannel() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->webChannel();
}

/*!
 * Sets the web channel instance to be used by this page and connects it to QtWebEngine's transport
 * using Chromium IPC messages. That transport is exposed in the javascript context of this page as
 * \c navigator.qtWebChannelTransport, which should be used when using the \l{Qt WebChannel JavaScript API}.
 *
 * \note The page does not take ownership of the \a channel object.
 *
 * \since 5.5
 * \param channel
 */

void QWebEnginePage::setWebChannel(QWebChannel *channel)
{
    Q_D(QWebEnginePage);
    d->adapter->setWebChannel(channel);
}

void QWebEnginePage::setView(QWidget *view)
{
    QWebEngineViewPrivate::bind(qobject_cast<QWebEngineView*>(view), this);
}

QWidget *QWebEnginePage::view() const
{
    Q_D(const QWebEnginePage);
    return d->view;
}

/*!
    Returns the QWebEngineProfile the page belongs to.
    \since 5.5
*/
QWebEngineProfile *QWebEnginePage::profile() const
{
    Q_D(const QWebEnginePage);
    return d->profile;
}

bool QWebEnginePage::hasSelection() const
{
    return !selectedText().isEmpty();
}

QString QWebEnginePage::selectedText() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->selectedText();
}

#ifndef QT_NO_ACTION
QAction *QWebEnginePage::action(WebAction action) const
{
    Q_D(const QWebEnginePage);
    if (action == QWebEnginePage::NoWebAction)
        return 0;
    if (d->actions[action])
        return d->actions[action];

    QString text;
    QIcon icon;
    QStyle *style = d->view ? d->view->style() : qApp->style();

    switch (action) {
    case Back:
        text = tr("Back");
        icon = style->standardIcon(QStyle::SP_ArrowBack);
        break;
    case Forward:
        text = tr("Forward");
        icon = style->standardIcon(QStyle::SP_ArrowForward);
        break;
    case Stop:
        text = tr("Stop");
        icon = style->standardIcon(QStyle::SP_BrowserStop);
        break;
    case Reload:
        text = tr("Reload");
        icon = style->standardIcon(QStyle::SP_BrowserReload);
        break;
    case Cut:
        text = tr("Cut");
        break;
    case Copy:
        text = tr("Copy");
        break;
    case Paste:
        text = tr("Paste");
        break;
    case Undo:
        text = tr("Undo");
        break;
    case Redo:
        text = tr("Redo");
        break;
    case SelectAll:
        text = tr("Select All");
        break;
    case PasteAndMatchStyle:
        text = tr("Paste and Match Style");
        break;
    default:
        break;
    }

    QAction *a = new QAction(const_cast<QWebEnginePage*>(this));
    a->setText(text);
    a->setData(action);
    a->setIcon(icon);

    connect(a, SIGNAL(triggered(bool)), this, SLOT(_q_webActionTriggered(bool)));

    d->actions[action] = a;
    d->updateAction(action);
    return a;
}
#endif // QT_NO_ACTION

void QWebEnginePage::triggerAction(WebAction action, bool)
{
    Q_D(QWebEnginePage);
    switch (action) {
    case Back:
        d->adapter->navigateToOffset(-1);
        break;
    case Forward:
        d->adapter->navigateToOffset(1);
        break;
    case Stop:
        d->adapter->stop();
        break;
    case Reload:
        d->adapter->reload();
        break;
    case Cut:
        d->adapter->cut();
        break;
    case Copy:
        d->adapter->copy();
        break;
    case Paste:
        d->adapter->paste();
        break;
    case Undo:
        d->adapter->undo();
        break;
    case Redo:
        d->adapter->redo();
        break;
    case SelectAll:
        d->adapter->selectAll();
        break;
    case PasteAndMatchStyle:
        d->adapter->pasteAndMatchStyle();
        break;
    default:
        Q_UNREACHABLE();
    }
}

void QWebEnginePage::findText(const QString &subString, FindFlags options, const QWebEngineCallback<bool> &resultCallback)
{
    Q_D(QWebEnginePage);
    if (subString.isEmpty()) {
        d->adapter->stopFinding();
        if (resultCallback.d)
            (*resultCallback.d)(false);
    } else {
        quint64 requestId = d->adapter->findText(subString, options & FindCaseSensitively, options & FindBackward);
        if (resultCallback.d)
            d->m_callbacks.registerCallback(requestId, resultCallback.d);
    }
}

/*!
 * \reimp
 */
bool QWebEnginePage::event(QEvent *e)
{
    return QObject::event(e);
}

bool QWebEnginePagePrivate::contextMenuRequested(const WebEngineContextMenuData &data)
{
    if (!view)
        return false;

    QContextMenuEvent event(QContextMenuEvent::Mouse, data.pos, view->mapToGlobal(data.pos));
    switch (view->contextMenuPolicy()) {
    case Qt::PreventContextMenu:
        return false;
    case Qt::DefaultContextMenu:
        m_menuData = data;
        view->contextMenuEvent(&event);
        break;
    case Qt::CustomContextMenu:
        Q_EMIT view->customContextMenuRequested(data.pos);
        break;
    case Qt::ActionsContextMenu:
        if (view->actions().count()) {
            QMenu::exec(view->actions(), event.globalPos(), 0, view);
            break;
        }
        // fall through
    default:
        event.ignore();
        return false;
        break;
    }
    Q_ASSERT(view->d_func()->m_pendingContextMenuEvent);
    view->d_func()->m_pendingContextMenuEvent = false;
    m_menuData = WebEngineContextMenuData();
    return true;
}

void QWebEnginePagePrivate::navigationRequested(int navigationType, const QUrl &url, int &navigationRequestAction, bool isMainFrame)
{
    Q_Q(QWebEnginePage);
    bool accepted = q->acceptNavigationRequest(url, static_cast<QWebEnginePage::NavigationType>(navigationType), isMainFrame);
    navigationRequestAction = accepted ? WebContentsAdapterClient::AcceptRequest : WebContentsAdapterClient::IgnoreRequest;
}

void QWebEnginePagePrivate::javascriptDialog(QSharedPointer<JavaScriptDialogController> controller)
{
    Q_Q(QWebEnginePage);
    bool accepted = false;
    QString promptResult;
    switch (controller->type()) {
    case AlertDialog:
        q->javaScriptAlert(controller->securityOrigin(), controller->message());
        accepted = true;
        break;
    case ConfirmDialog:
        accepted = q->javaScriptConfirm(controller->securityOrigin(), controller->message());
        break;
    case PromptDialog:
        accepted = q->javaScriptPrompt(controller->securityOrigin(), controller->message(), controller->defaultPrompt(), &promptResult);
        if (accepted)
            controller->textProvided(promptResult);
        break;
    case InternalAuthorizationDialog:
        accepted = (QMessageBox::question(view, controller->title(), controller->message(), QMessageBox::Yes, QMessageBox::No) == QMessageBox::Yes);
        break;
    default:
        Q_UNREACHABLE();
    }
    if (accepted)
        controller->accept();
    else
        controller->reject();
}

void QWebEnginePagePrivate::allowCertificateError(const QSharedPointer<CertificateErrorController> &controller)
{
    Q_Q(QWebEnginePage);
    bool accepted = false;

    QWebEngineCertificateError error(controller->error(), controller->url(), controller->overridable() && !controller->strictEnforcement(), controller->errorString());
    accepted = q->certificateError(error);

    if (error.isOverridable())
        controller->accept(accepted);
}

void QWebEnginePagePrivate::javaScriptConsoleMessage(JavaScriptConsoleMessageLevel level, const QString &message, int lineNumber, const QString &sourceID)
{
    Q_Q(QWebEnginePage);
    q->javaScriptConsoleMessage(static_cast<QWebEnginePage::JavaScriptConsoleMessageLevel>(level), message, lineNumber, sourceID);
}

namespace {
class SaveToClipboardFunctor
{
    QString m_text;
public:
    SaveToClipboardFunctor(const QString &text)
      : m_text(text)
    {}
    void operator()() const
    {
        qApp->clipboard()->setText(m_text);
    }
};

class LoadUrlFunctor
{
    QWebEnginePage *m_page;
    QUrl m_url;
public:
    LoadUrlFunctor(QWebEnginePage *page, const QUrl &url)
      : m_page(page)
      , m_url(url)
    {}
    void operator()() const
    {
        m_page->load(m_url);
    }
};
}

QMenu *QWebEnginePage::createStandardContextMenu()
{
    Q_D(QWebEnginePage);
    QMenu *menu = new QMenu(d->view);
    QAction *action = 0;
    WebEngineContextMenuData contextMenuData(d->m_menuData);
    if (contextMenuData.selectedText.isEmpty()) {
        action = new QAction(QIcon::fromTheme(QStringLiteral("go-previous")), tr("&Back"), menu);
        connect(action, &QAction::triggered, d->view, &QWebEngineView::back);
        action->setEnabled(d->adapter->canGoBack());
        menu->addAction(action);

        action = new QAction(QIcon::fromTheme(QStringLiteral("go-next")), tr("&Forward"), menu);
        connect(action, &QAction::triggered, d->view, &QWebEngineView::forward);
        action->setEnabled(d->adapter->canGoForward());
        menu->addAction(action);

        action = new QAction(QIcon::fromTheme(QStringLiteral("view-refresh")), tr("&Reload"), menu);
        connect(action, &QAction::triggered, d->view, &QWebEngineView::reload);
        menu->addAction(action);
    } else {
        action = new QAction(tr("Copy..."), menu);
        connect(action, &QAction::triggered, SaveToClipboardFunctor(contextMenuData.selectedText));
        menu->addAction(action);
    }

    if (!contextMenuData.linkText.isEmpty() && contextMenuData.linkUrl.isValid()) {
        menu->addSeparator();
        action = new QAction(tr("Navigate to..."), menu);
        connect(action, &QAction::triggered, LoadUrlFunctor(this, contextMenuData.linkUrl));
        menu->addAction(action);
        action = new QAction(tr("Copy link address"), menu);
        connect(action, &QAction::triggered, SaveToClipboardFunctor(contextMenuData.linkUrl.toString()));
        menu->addAction(action);
    }
    return menu;
}

void QWebEnginePage::setFeaturePermission(const QUrl &securityOrigin, QWebEnginePage::Feature feature, QWebEnginePage::PermissionPolicy policy)
{
    Q_D(QWebEnginePage);
    if (policy == PermissionUnknown)
        return;
    WebContentsAdapterClient::MediaRequestFlags flags =  WebContentsAdapterClient::MediaNone;
    switch (feature) {
    case MediaAudioVideoCapture:
    case MediaAudioCapture:
    case MediaVideoCapture:
        if (policy != PermissionUnknown) {
            if (policy == PermissionDeniedByUser)
                flags = WebContentsAdapterClient::MediaNone;
            else {
                if (feature == MediaAudioCapture)
                    flags = WebContentsAdapterClient::MediaAudioCapture;
                else if (feature == MediaVideoCapture)
                    flags = WebContentsAdapterClient::MediaVideoCapture;
                else
                    flags = WebContentsAdapterClient::MediaRequestFlags(WebContentsAdapterClient::MediaVideoCapture | WebContentsAdapterClient::MediaAudioCapture);
            }
            d->adapter->grantMediaAccessPermission(securityOrigin, flags);
        }
        d->adapter->grantMediaAccessPermission(securityOrigin, flags);
        break;
    case QWebEnginePage::Geolocation:
        d->adapter->runGeolocationRequestCallback(securityOrigin, (policy == PermissionGrantedByUser) ? true : false);
        break;
    case MouseLock:
        if (policy == PermissionGrantedByUser)
            d->adapter->grantMouseLockPermission(true);
        else
            d->adapter->grantMouseLockPermission(false);
        break;
    default:
        break;
    }
}

static inline QWebEnginePage::FileSelectionMode toPublic(WebContentsAdapterClient::FileChooserMode mode)
{
    // Should the underlying values change, we'll need a switch here.
    return static_cast<QWebEnginePage::FileSelectionMode>(mode);
}

void QWebEnginePagePrivate::runFileChooser(WebContentsAdapterClient::FileChooserMode mode, const QString &defaultFileName, const QStringList &acceptedMimeTypes)
{
    Q_Q(QWebEnginePage);
    QStringList selectedFileNames = q->chooseFiles(toPublic(mode), (QStringList() << defaultFileName), acceptedMimeTypes);
    adapter->filesSelectedInChooser(selectedFileNames, mode);
}

WebEngineSettings *QWebEnginePagePrivate::webEngineSettings() const
{
    return settings->d_func();
}

void QWebEnginePage::load(const QUrl& url)
{
    Q_D(QWebEnginePage);
    d->adapter->load(url);
}

void QWebEnginePage::toHtml(const QWebEngineCallback<const QString &> &resultCallback) const
{
    Q_D(const QWebEnginePage);
    quint64 requestId = d->adapter->fetchDocumentMarkup();
    d->m_callbacks.registerCallback(requestId, resultCallback.d);
}

void QWebEnginePage::toPlainText(const QWebEngineCallback<const QString &> &resultCallback) const
{
    Q_D(const QWebEnginePage);
    quint64 requestId = d->adapter->fetchDocumentInnerText();
    d->m_callbacks.registerCallback(requestId, resultCallback.d);
}

void QWebEnginePage::setHtml(const QString &html, const QUrl &baseUrl)
{
    setContent(html.toUtf8(), QStringLiteral("text/html;charset=UTF-8"), baseUrl);
}

void QWebEnginePage::setContent(const QByteArray &data, const QString &mimeType, const QUrl &baseUrl)
{
    Q_D(QWebEnginePage);
    d->adapter->setContent(data, mimeType, baseUrl);
}

QString QWebEnginePage::title() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->pageTitle();
}

void QWebEnginePage::setUrl(const QUrl &url)
{
    Q_D(QWebEnginePage);
    d->explicitUrl = url;
    load(url);
}

QUrl QWebEnginePage::url() const
{
    Q_D(const QWebEnginePage);
    return d->explicitUrl.isValid() ? d->explicitUrl : d->adapter->activeUrl();
}

QUrl QWebEnginePage::requestedUrl() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->requestedUrl();
}

QUrl QWebEnginePage::iconUrl() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->iconUrl();
}

qreal QWebEnginePage::zoomFactor() const
{
    Q_D(const QWebEnginePage);
    return d->adapter->currentZoomFactor();
}

void QWebEnginePage::setZoomFactor(qreal factor)
{
    Q_D(QWebEnginePage);
    d->adapter->setZoomFactor(factor);
}

void QWebEnginePage::runJavaScript(const QString &scriptSource)
{
    Q_D(QWebEnginePage);
    d->adapter->runJavaScript(scriptSource);
}

void QWebEnginePage::runJavaScript(const QString& scriptSource, const QWebEngineCallback<const QVariant &> &resultCallback)
{
    Q_D(QWebEnginePage);
    quint64 requestId = d->adapter->runJavaScriptCallbackResult(scriptSource);
    d->m_callbacks.registerCallback(requestId, resultCallback.d);
}

QWebEnginePage *QWebEnginePage::createWindow(WebWindowType type)
{
    Q_D(QWebEnginePage);
    if (d->view) {
        QWebEngineView *newView = d->view->createWindow(type);
        if (newView)
            return newView->page();
    }
    return 0;
}

ASSERT_ENUMS_MATCH(WebContentsAdapterClient::Open, QWebEnginePage::FileSelectOpen)
ASSERT_ENUMS_MATCH(WebContentsAdapterClient::OpenMultiple, QWebEnginePage::FileSelectOpenMultiple)

QStringList QWebEnginePage::chooseFiles(FileSelectionMode mode, const QStringList &oldFiles, const QStringList &acceptedMimeTypes)
{
    // FIXME: Should we expose this in QWebPage's API ? Right now it is very open and can contain a mix and match of file extensions (which QFileDialog
    // can work with) and mimetypes ranging from text/plain or images/* to application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
    Q_UNUSED(acceptedMimeTypes);
    QStringList ret;
    switch (static_cast<WebContentsAdapterClient::FileChooserMode>(mode)) {
    case WebContentsAdapterClient::OpenMultiple:
        ret = QFileDialog::getOpenFileNames(view(), QString());
        break;
    // Chromium extension, not exposed as part of the public API for now.
    case WebContentsAdapterClient::UploadFolder:
        ret << QFileDialog::getExistingDirectory(view(), tr("Select folder to upload")) + QLatin1Char('/');
        break;
    case WebContentsAdapterClient::Save:
        ret << QFileDialog::getSaveFileName(view(), QString(), (QStandardPaths::writableLocation(QStandardPaths::DownloadLocation) + oldFiles.first()));
        break;
    default:
    case WebContentsAdapterClient::Open:
        ret << QFileDialog::getOpenFileName(view(), QString(), oldFiles.first());
        break;
    }
    return ret;
}

void QWebEnginePage::javaScriptAlert(const QUrl &securityOrigin, const QString &msg)
{
    Q_UNUSED(securityOrigin);
    QMessageBox::information(view(), QStringLiteral("Javascript Alert - %1").arg(url().toString()), msg);
}

bool QWebEnginePage::javaScriptConfirm(const QUrl &securityOrigin, const QString &msg)
{
    Q_UNUSED(securityOrigin);
    return (QMessageBox::information(view(), QStringLiteral("Javascript Confirm - %1").arg(url().toString()), msg, QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok);
}

bool QWebEnginePage::javaScriptPrompt(const QUrl &securityOrigin, const QString &msg, const QString &defaultValue, QString *result)
{
    Q_UNUSED(securityOrigin);
    bool ret = false;
    if (result)
        *result = QInputDialog::getText(view(), QStringLiteral("Javascript Prompt - %1").arg(url().toString()), msg, QLineEdit::Normal, defaultValue, &ret);
    return ret;
}

void QWebEnginePage::javaScriptConsoleMessage(JavaScriptConsoleMessageLevel level, const QString &message, int lineNumber, const QString &sourceID)
{
    Q_UNUSED(level);
    Q_UNUSED(message);
    Q_UNUSED(lineNumber);
    Q_UNUSED(sourceID);
}

bool QWebEnginePage::certificateError(const QWebEngineCertificateError &)
{
    return false;
}

bool QWebEnginePage::acceptNavigationRequest(const QUrl &url, NavigationType type, bool isMainFrame)
{
    Q_UNUSED(url);
    Q_UNUSED(type);
    Q_UNUSED(isMainFrame);
    return true;
}

QT_END_NAMESPACE

#include "moc_qwebenginepage.cpp"