bool WebInspectorClient::sendMessageToFrontend(const String& message)
{
    WebInspector* inspector = m_page->inspector();
    if (!inspector)
        return false;

#if ENABLE(INSPECTOR_SERVER)
    if (inspector->hasRemoteFrontendConnected()) {
        inspector->sendMessageToRemoteFrontend(message);
        return true;
    }
#endif

    WebPage* inspectorPage = inspector->inspectorPage();
    if (inspectorPage)
        return doDispatchMessageOnFrontendPage(inspectorPage->corePage(), message);

    return false;
}

void WebProcess::setTextCheckerState(const TextCheckerState& textCheckerState)
{
    bool continuousSpellCheckingTurnedOff = !textCheckerState.isContinuousSpellCheckingEnabled && m_textCheckerState.isContinuousSpellCheckingEnabled;
    bool grammarCheckingTurnedOff = !textCheckerState.isGrammarCheckingEnabled && m_textCheckerState.isGrammarCheckingEnabled;

    m_textCheckerState = textCheckerState;

    if (!continuousSpellCheckingTurnedOff && !grammarCheckingTurnedOff)
        return;

    HashMap<uint64_t, RefPtr<WebPage> >::iterator end = m_pageMap.end();
    for (HashMap<uint64_t, RefPtr<WebPage> >::iterator it = m_pageMap.begin(); it != end; ++it) {
        WebPage* page = (*it).value.get();
        if (continuousSpellCheckingTurnedOff)
            page->unmarkAllMisspellings();
        if (grammarCheckingTurnedOff)
            page->unmarkAllBadGrammar();
    }
}

WebView::WebView(QWidget *parent, CookieJar *cookieJar) :
    QWebView(parent),
    cookieJar(cookieJar)
{
    WebPage *page = new WebPage();
    page->setView(this);
    this->setPage(page);
    settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
    settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, true);
    settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, true);
    settings()->setAttribute(QWebSettings::JavascriptCanCloseWindows, true);
    settings()->setAttribute(QWebSettings::NotificationsEnabled, true);
    settings()->setThirdPartyCookiePolicy(QWebSettings::ThirdPartyCookiePolicy::AlwaysAllowThirdPartyCookies);
    settings()->setFontFamily(QWebSettings::StandardFont, "Segoe UI");
    settings()->setFontSize(QWebSettings::DefaultFontSize, 16);
    setContextMenuPolicy(Qt::ContextMenuPolicy::PreventContextMenu);
    setStoragePath();
    setCookies();
}

bool WebFrameLoaderClient::shouldGoToHistoryItem(HistoryItem* item) const
{
    WebPage* webPage = m_frame->page();
    if (!webPage)
        return false;
    
    uint64_t itemID = WebBackForwardListProxy::idForItem(item);
    if (!itemID) {
        // We should never be considering navigating to an item that is not actually in the back/forward list.
        ASSERT_NOT_REACHED();
        return false;
    }
    
    bool shouldGoToBackForwardListItem;
    if (!webPage->sendSync(Messages::WebPageProxy::ShouldGoToBackForwardListItem(itemID), Messages::WebPageProxy::ShouldGoToBackForwardListItem::Reply(shouldGoToBackForwardListItem)))
        return false;
    
    return shouldGoToBackForwardListItem;
}

QNetworkReply* AdBlockManager::block(const QNetworkRequest &request)
{
#ifdef ADBLOCK_DEBUG
    QElapsedTimer timer;
    timer.start();
#endif
    const QString urlString = request.url().toEncoded().toLower();
    const QString urlDomain = request.url().host().toLower();
    const QString urlScheme = request.url().scheme().toLower();

    if (!isEnabled() || !canRunOnScheme(urlScheme))
        return 0;

    const AdBlockRule* blockedRule = m_matcher->match(request, urlDomain, urlString);

    if (blockedRule) {
        QVariant v = request.attribute((QNetworkRequest::Attribute)(QNetworkRequest::User + 100));
        WebPage* webPage = static_cast<WebPage*>(v.value<void*>());
        if (webPage) {
            if (!canBeBlocked(webPage->url())) {
                return 0;
            }

            webPage->addAdBlockRule(blockedRule, request.url());
        }

        AdBlockBlockedNetworkReply* reply = new AdBlockBlockedNetworkReply(blockedRule, this);
        reply->setRequest(request);

#ifdef ADBLOCK_DEBUG
        qDebug() << "BLOCKED: " << timer.elapsed() << blockedRule->filter() << request.url();
#endif

        return reply;
    }

#ifdef ADBLOCK_DEBUG
    qDebug() << timer.elapsed() << request.url();
#endif

    return 0;
}

void QtNetworkAccessManager::onSslErrors(QNetworkReply* reply, const QList<QSslError>& qSslErrors)
{
#ifndef QT_NO_SSL
    WebPage* webPage = obtainOriginatingWebPage(reply->request());

    // FIXME: This check can go away once our Qt version is up-to-date. See: QTBUG-23512.
    if (!webPage)
        return;

    String hostname = reply->url().host();
    bool ignoreErrors = false;

    if (webPage->sendSync(
        Messages::WebPageProxy::CertificateVerificationRequest(hostname),
        Messages::WebPageProxy::CertificateVerificationRequest::Reply(ignoreErrors))) {
        if (ignoreErrors)
            reply->ignoreSslErrors(qSslErrors);
    }
#endif
}

void WebPageManager::reset() {
  m_timeout = -1;
  m_cookieJar->clearCookies();
  m_networkAccessManager->reset();
  m_customHeadersRequestHandler->reset();
  m_currentPage->resetLocalStorage();
  m_blacklistedRequestHandler->reset();
  m_unknownUrlHandler->reset();
  while (!m_pages.isEmpty()) {
    WebPage *page = m_pages.takeFirst();
    page->deleteLater();
  }

  qint64 size = QWebSettings::offlineWebApplicationCacheQuota();
  // No public function was found to wrap the empty() call to
  // WebCore::cacheStorage().empty()
  QWebSettings::setOfflineWebApplicationCacheQuota(size);

  createPage()->setFocus();
}

void VisitedLinkTableController::addVisitedLink(Page& page, LinkHash linkHash)
{
    if (m_visitedLinkTable.isLinkVisited(linkHash))
        return;

    WebPage* webPage = WebPage::fromCorePage(&page);
    if (!webPage)
        return;

    WebProcess::singleton().parentProcessConnection()->send(Messages::VisitedLinkProvider::AddVisitedLinkHashFromPage(webPage->pageID(), linkHash), m_identifier);
}

void WebFrameLoaderClient::dispatchDidFailProvisionalLoad(const ResourceError& error)
{
    WebPage* webPage = m_frame->page();
    if (!webPage)
        return;

    RefPtr<APIObject> userData;

    // Notify the bundle client.
    webPage->injectedBundleLoaderClient().didFailProvisionalLoadWithErrorForFrame(webPage, m_frame, error, userData);

    webPage->sandboxExtensionTracker().didFailProvisionalLoad(m_frame);

    // Notify the UIProcess.
    webPage->send(Messages::WebPageProxy::DidFailProvisionalLoadForFrame(m_frame->frameID(), error, InjectedBundleUserMessageEncoder(userData.get())));
    
    // If we have a load listener, notify it.
    if (WebFrame::LoadListener* loadListener = m_frame->loadListener())
        loadListener->didFailLoad(m_frame, error.isCancellation());
}

void NetworkManager::setSSLConfiguration(QNetworkReply* reply)
{
    if (!reply->sslConfiguration().isNull()) {
        QSslCertificate cert = reply->sslConfiguration().peerCertificate();
        if (!cert.isValid() || reply->property("downReply").toBool()) {
            return;
        }

        QNetworkRequest request = reply->request();
        QVariant v = request.attribute((QNetworkRequest::Attribute)(QNetworkRequest::User + 100));
        WebPage* webPage = static_cast<WebPage*>(v.value<void*>());
        if (!webPage) {
            return;
        }

        if (webPage->url().host() == reply->url().host()) {
            webPage->setSSLCertificate(cert);
        }
    }
}

void WebLoaderStrategy::createPingHandle(NetworkingContext* networkingContext, ResourceRequest& request, bool shouldUseCredentialStorage)
{
    // It's possible that call to createPingHandle might be made during initial empty Document creation before a NetworkingContext exists.
    // It is not clear that we should send ping loads during that process anyways.
    if (!networkingContext)
        return;

    WebFrameNetworkingContext* webContext = static_cast<WebFrameNetworkingContext*>(networkingContext);
    WebFrameLoaderClient* webFrameLoaderClient = webContext->webFrameLoaderClient();
    WebFrame* webFrame = webFrameLoaderClient ? webFrameLoaderClient->webFrame() : nullptr;
    WebPage* webPage = webFrame ? webFrame->page() : nullptr;
    
    NetworkResourceLoadParameters loadParameters;
    loadParameters.request = request;
    loadParameters.sessionID = webPage ? webPage->sessionID() : SessionID::defaultSessionID();
    loadParameters.allowStoredCredentials = shouldUseCredentialStorage ? AllowStoredCredentials : DoNotAllowStoredCredentials;
    loadParameters.shouldClearReferrerOnHTTPSToHTTPRedirect = networkingContext->shouldClearReferrerOnHTTPSToHTTPRedirect();

    WebProcess::singleton().networkConnection()->connection()->send(Messages::NetworkConnectionToWebProcess::LoadPing(loadParameters), 0);
}

WebPage
WebPage::operator< (const WebPage & w)
{

  if (filename () < w.filename ())	//compare webpages by their filenames
    return *this;
  else
    return w;


}

void WebFrameLoaderClient::updateGlobalHistoryRedirectLinks()
{
    WebPage* webPage = m_frame->page();
    if (!webPage || !webPage->pageGroup()->isVisibleToHistoryClient())
        return;

    DocumentLoader* loader = m_frame->coreFrame()->loader()->documentLoader();
    ASSERT(loader->unreachableURL().isEmpty());

    // Client redirect
    if (!loader->clientRedirectSourceForHistory().isNull()) {
        WebProcess::shared().connection()->send(Messages::WebContext::DidPerformClientRedirect(webPage->pageID(),
            loader->clientRedirectSourceForHistory(), loader->clientRedirectDestinationForHistory(), m_frame->frameID()), 0);
    }

    // Server redirect
    if (!loader->serverRedirectSourceForHistory().isNull()) {
        WebProcess::shared().connection()->send(Messages::WebContext::DidPerformServerRedirect(webPage->pageID(),
            loader->serverRedirectSourceForHistory(), loader->serverRedirectDestinationForHistory(), m_frame->frameID()), 0);
    }
}

PassRefPtr<Frame> WebFrameLoaderClient::createFrame(const KURL& url, const String& name, HTMLFrameOwnerElement* ownerElement,
                                                    const String& referrer, bool allowsScrolling, int marginWidth, int marginHeight)
{
    WebPage* webPage = m_frame->page();

    RefPtr<WebFrame> subframe = WebFrame::createSubframe(webPage, name, ownerElement);

    // Notify the UI process that subframe has been added.
    WebProcess::shared().connection()->send(WebPageProxyMessage::DidCreateSubFrame, webPage->pageID(), CoreIPC::In(subframe->frameID()));

    Frame* coreSubframe = subframe->coreFrame();

     // The creation of the frame may have run arbitrary JavaScript that removed it from the page already.
    m_frame->coreFrame()->loader()->loadURLIntoChildFrame(url, referrer, coreSubframe);

    // The frame's onload handler may have removed it from the document.
    if (!coreSubframe->tree()->parent())
        return 0;

    return coreSubframe;
}

void WebFrameLoaderClient::dispatchWillSubmitForm(FramePolicyFunction function, PassRefPtr<FormState> prpFormState)
{
    WebPage* webPage = m_frame->page();
    if (!webPage)
        return;

    // FIXME: Pass more of the form state.
    RefPtr<FormState> formState = prpFormState;
    
    HTMLFormElement* form = formState->form();
    WebFrame* sourceFrame = static_cast<WebFrameLoaderClient*>(formState->sourceFrame()->loader()->client())->webFrame();    
    const Vector<std::pair<String, String> >& values = formState->textFieldValues();

    RefPtr<APIObject> userData;
    webPage->injectedBundleFormClient().willSubmitForm(webPage, form, m_frame, sourceFrame, values, userData);


    uint64_t listenerID = m_frame->setUpPolicyListener(function);

    WebProcess::shared().connection()->send(WebPageProxyMessage::WillSubmitForm, webPage->pageID(),
                                            CoreIPC::In(m_frame->frameID(), sourceFrame->frameID(), values, listenerID, InjectedBundleUserMessageEncoder(userData.get())));
}

void DisplayWindow::clear_display()
{
    if (progress_bar)
    {
        mainwindow->remove_widget_from_layout(progress_bar);
        delete progress_bar;
        progress_bar = NULL;
    }

    if (web_view)
    {
        mainwindow->remove_widget_from_layout(web_view);
#if defined(WEB_MACHINE_ENGINE)
        WebPage* page = (WebPage*)web_view->page();
        QWebChannel *channel = page ? page->webChannel() : NULL;
        if (channel)
            channel->deregisterObject(page);
#endif
        delete web_view;
        web_view = NULL;
    }
}

void DownloadManager::closeDownloadTab(const QUrl &url) const
{
    // Attempt to close empty tab that was opened only for loading the download url
    auto testWebView = [](TabbedWebView *view, const QUrl &url) {
        if (view->browserWindow()->tabWidget()->tabBar()->normalTabsCount() < 2) {
            return false;
        }
        WebPage *page = view->page();
        if (page->history()->count() != 0) {
            return false;
        }
        if (page->url() != QUrl()) {
            return false;
        }
        QUrl tabUrl = page->requestedUrl();
        if (tabUrl.isEmpty()) {
            tabUrl = QUrl(view->webTab()->locationBar()->text());
        }
        return tabUrl.host() == url.host();
    };

    if (testWebView(mApp->getWindow()->weView(), url)) {
        mApp->getWindow()->weView()->closeView();
        return;
    }

    const auto windows = mApp->windows();
    for (auto *window : windows) {
        const auto tabs = window->tabWidget()->allTabs();
        for (auto *tab : tabs) {
            auto *view = tab->webView();
            if (testWebView(view, url)) {
                view->closeView();
                return;
            }
        }
    }
}

void QtNetworkAccessManager::onAuthenticationRequired(QNetworkReply* reply, QAuthenticator* authenticator)
{
    WebPage* webPage = obtainOriginatingWebPage(reply->request());

    // FIXME: This check can go away once our Qt version is up-to-date. See: QTBUG-23512.
    if (!webPage)
        return;

    String hostname = reply->url().toString(QUrl::RemovePath | QUrl::RemoveQuery | QUrl::RemoveFragment | QUrl::StripTrailingSlash);
    String realm = authenticator->realm();
    String prefilledUsername = authenticator->user();
    String username;
    String password;

    if (webPage->sendSync(
        Messages::WebPageProxy::AuthenticationRequiredRequest(hostname, realm, prefilledUsername),
        Messages::WebPageProxy::AuthenticationRequiredRequest::Reply(username, password))) {
        if (!username.isEmpty())
            authenticator->setUser(username);
        if (!password.isEmpty())
            authenticator->setPassword(password);
    }
}

void WebFrameLoaderClient::finishedLoading(DocumentLoader* loader)
{
    if (!m_pluginView) {
        committedLoad(loader, 0, 0);

        if (m_frameHasCustomRepresentation) {
            WebPage* webPage = m_frame->page();
            if (!webPage)
                return;

            RefPtr<SharedBuffer> mainResourceData = loader->mainResourceData();
            CoreIPC::DataReference dataReference(reinterpret_cast<const uint8_t*>(mainResourceData ? mainResourceData->data() : 0), mainResourceData ? mainResourceData->size() : 0);
            
            webPage->send(Messages::WebPageProxy::DidFinishLoadingDataForCustomRepresentation(loader->response().suggestedFilename(), dataReference));
        }

        return;
    }

    m_pluginView->manualLoadDidFinishLoading();
    m_pluginView = 0;
    m_hasSentResponseToPluginView = false;
}

QNetworkReply* AdBlockNetwork::block(const QNetworkRequest &request)
{
    const QString &urlString = request.url().toEncoded();
    const QString &urlScheme = request.url().scheme();

    if (urlScheme == "data" || urlScheme == "qrc" || urlScheme == "file" || urlScheme == "qupzilla") {
        return 0;
    }

    AdBlockManager* manager = AdBlockManager::instance();
    if (!manager->isEnabled()) {
        return 0;
    }

    const AdBlockRule* blockedRule = 0;
    AdBlockSubscription* subscription = manager->subscription();

    if (subscription->allow(urlString)) {
        return 0;
    }

    if (const AdBlockRule* rule = subscription->block(urlString)) {
        blockedRule = rule;
    }

    if (blockedRule) {
        QVariant v = request.attribute((QNetworkRequest::Attribute)(QNetworkRequest::User + 100));
        WebPage* webPage = static_cast<WebPage*>(v.value<void*>());
        if (WebPage::isPointerSafeToUse(webPage)) {
            webPage->addAdBlockRule(blockedRule->filter(), request.url());
        }

        AdBlockBlockedNetworkReply* reply = new AdBlockBlockedNetworkReply(request, blockedRule, this);
        return reply;
    }
    return 0;
}