src/widgets/TabWidget.cpp

   1 /*
   2  * Copyright 2022-2023 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser PC <https://www.stoutner.com/privacy-browser-pc>.
   5  *
   6  * Privacy Browser PC is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser PC is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser PC.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 // Application headers.
  21 #include "TabWidget.h"
  22 #include "Settings.h"
  23 #include "ui_AddTabWidget.h"
  24 #include "ui_TabWidget.h"
  25 #include "databases/CookiesDatabase.h"
  26 #include "databases/DomainsDatabase.h"
  27 #include "dialogs/SaveDialog.h"
  28 #include "filters/MouseEventFilter.h"
  29 #include "helpers/SearchEngineHelper.h"
  30 #include "interceptors/UrlRequestInterceptor.h"
  31 #include "windows/BrowserWindow.h"
  32
  33 // KDE Framework headers.
  34 #include <KIO/FileCopyJob>
  35 #include <KIO/JobUiDelegate>
  36 #include <KNotification>
  37
  38 // Qt toolkit headers.
  39 #include <QAction>
  40 #include <QFileDialog>
  41 #include <QGraphicsScene>
  42 #include <QGraphicsView>
  43 #include <QPrintDialog>
  44 #include <QPrintPreviewDialog>
  45 #include <QPrinter>
  46
  47 // Initialize the public static variables.
  48 QString TabWidget::webEngineDefaultUserAgent = QLatin1String("");
  49
  50 // Construct the class.
  51 TabWidget::TabWidget(QWidget *parent) : QWidget(parent)
  52 {
  53     // Instantiate the user agent helper.
  54     userAgentHelperPointer = new UserAgentHelper();
  55
  56     // Instantiate the UIs.
  57     Ui::TabWidget tabWidgetUi;
  58     Ui::AddTabWidget addTabWidgetUi;
  59
  60     // Setup the main UI.
  61     tabWidgetUi.setupUi(this);
  62
  63     // Get a handle for the tab widget.
  64     tabWidgetPointer = tabWidgetUi.tabWidget;
  65
  66     // Setup the add tab UI.
  67     addTabWidgetUi.setupUi(tabWidgetPointer);
  68
  69     // Get handles for the add tab widgets.
  70     QWidget *addTabWidgetPointer = addTabWidgetUi.addTabQWidget;
  71     QPushButton *addTabButtonPointer = addTabWidgetUi.addTabButton;
  72
  73     // Display the add tab widget.
  74     tabWidgetPointer->setCornerWidget(addTabWidgetPointer);
  75
  76     // Add the first tab.
  77     addFirstTab();
  78
  79     // Process tab events.
  80     connect(tabWidgetPointer, SIGNAL(currentChanged(int)), this, SLOT(updateUiWithTabSettings()));
  81     connect(addTabButtonPointer, SIGNAL(clicked()), this, SLOT(addTab()));
  82     connect(tabWidgetPointer, SIGNAL(tabCloseRequested(int)), this, SLOT(deleteTab(int)));
  83
  84     // Store a copy of the WebEngine default user agent.
  85     webEngineDefaultUserAgent = currentWebEngineProfilePointer->httpUserAgent();
  86
  87     // Instantiate the mouse event filter pointer.
  88     MouseEventFilter *mouseEventFilterPointer = new MouseEventFilter();
  89
  90     // Install the mouse event filter.
  91     qApp->installEventFilter(mouseEventFilterPointer);
  92
  93     // Process mouse forward and back commands.
  94     connect(mouseEventFilterPointer, SIGNAL(mouseBack()), this, SLOT(mouseBack()));
  95     connect(mouseEventFilterPointer, SIGNAL(mouseForward()), this, SLOT(mouseForward()));
  96 }
  97
  98 TabWidget::~TabWidget()
  99 {
 100     // Manually delete each WebEngine page.
 101     for (int i = 0; i < tabWidgetPointer->count(); ++i)
 102     {
 103         // Get the privacy WebEngine view.
 104         PrivacyWebEngineView *privacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(tabWidgetPointer->widget(i));
 105
 106         // Deletion the WebEngine page to prevent the following error:  `Release of profile requested but WebEnginePage still not deleted. Expect troubles !`
 107         delete privacyWebEngineViewPointer->page();
 108     }
 109 }
 110
 111 // The cookie is copied instead of referenced so that changes made to the cookie do not create a race condition with the display of the cookie in the dialog.
 112 void TabWidget::addCookieToStore(QNetworkCookie cookie, QWebEngineCookieStore *webEngineCookieStorePointer) const
 113 {
 114     // Create a url.
 115     QUrl url;
 116
 117     // Check to see if the domain does not start with a `.` because Qt makes this harder than it should be.  <https://doc.qt.io/qt-5/qwebenginecookiestore.html#setCookie>
 118     if (!cookie.domain().startsWith(QLatin1String(".")))
 119     {
 120         // Populate the URL.
 121         url.setHost(cookie.domain());
 122         url.setScheme(QLatin1String("https"));
 123
 124         // Clear the domain from the cookie.
 125         cookie.setDomain(QLatin1String(""));
 126     }
 127
 128     // Add the cookie to the store.
 129     if (webEngineCookieStorePointer == nullptr)
 130         currentWebEngineCookieStorePointer->setCookie(cookie, url);
 131     else
 132         webEngineCookieStorePointer->setCookie(cookie, url);
 133 }
 134
 135 void TabWidget::addFirstTab()
 136 {
 137     // Create the first tab.
 138     addTab();
 139
 140     // Update the UI with the tab settings.
 141     updateUiWithTabSettings();
 142
 143     // Set the focus on the current tab widget.  This prevents the tab bar from showing a blue bar under the label of the first tab.
 144     tabWidgetPointer->currentWidget()->setFocus();
 145 }
 146
 147 PrivacyWebEngineView* TabWidget::addTab(const bool removeUrlLineEditFocus, const bool backgroundTab)
 148 {
 149     // Create a privacy WebEngine view.
 150     PrivacyWebEngineView *privacyWebEngineViewPointer = new PrivacyWebEngineView();
 151
 152     // Add a new tab.
 153     int newTabIndex = tabWidgetPointer->addTab(privacyWebEngineViewPointer, i18nc("New tab label.", "New Tab"));
 154
 155     // Set the default tab icon.
 156     tabWidgetPointer->setTabIcon(newTabIndex, defaultTabIcon);
 157
 158     // Create an off-the-record profile (the default when no profile name is specified).
 159     QWebEngineProfile *webEngineProfilePointer = new QWebEngineProfile(QLatin1String(""));
 160
 161     // Create a WebEngine page.
 162     QWebEnginePage *webEnginePagePointer = new QWebEnginePage(webEngineProfilePointer);
 163
 164     // Set the WebEngine page.
 165     privacyWebEngineViewPointer->setPage(webEnginePagePointer);
 166
 167     // Get handles for the web engine elements.
 168     QWebEngineCookieStore *webEngineCookieStorePointer = webEngineProfilePointer->cookieStore();
 169     QWebEngineSettings *webEngineSettingsPointer = webEnginePagePointer->settings();
 170
 171     // Update the URL line edit when the URL changes.
 172     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::urlChanged, [privacyWebEngineViewPointer, this] (const QUrl &newUrl)
 173     {
 174         // Only update the UI if this is the current tab.
 175         if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
 176         {
 177             // Update the URL line edit.
 178             emit updateUrlLineEdit(newUrl);
 179
 180             // Update the status of the forward and back buttons.
 181             emit updateBackAction(currentWebEngineHistoryPointer->canGoBack());
 182             emit updateForwardAction(currentWebEngineHistoryPointer->canGoForward());
 183         }
 184
 185         // Reapply the zoom factor.  This is a bug in QWebEngineView that resets the zoom with every load.  It can be removed once <https://redmine.stoutner.com/issues/799> is fixed.
 186         privacyWebEngineViewPointer->setZoomFactor(currentZoomFactor);
 187     });
 188
 189     // Update the progress bar when a load is started.
 190     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::loadStarted, [privacyWebEngineViewPointer, this] ()
 191     {
 192         // Store the load progress.
 193         privacyWebEngineViewPointer->loadProgressInt = 0;
 194
 195         // Show the progress bar if this is the current tab.
 196         if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
 197             emit showProgressBar(0);
 198     });
 199
 200     // Update the progress bar when a load progresses.
 201     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::loadProgress, [privacyWebEngineViewPointer, this] (const int progress)
 202     {
 203         // Store the load progress.
 204         privacyWebEngineViewPointer->loadProgressInt = progress;
 205
 206         // Update the progress bar if this is the current tab.
 207         if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
 208             emit showProgressBar(progress);
 209     });
 210
 211     // Update the progress bar when a load finishes.
 212     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::loadFinished, [privacyWebEngineViewPointer, this] ()
 213     {
 214         // Store the load progress.
 215         privacyWebEngineViewPointer->loadProgressInt = -1;
 216
 217         // Hide the progress bar if this is the current tab.
 218         if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
 219             emit hideProgressBar();
 220     });
 221
 222     // Display find text results.
 223     connect(webEnginePagePointer, SIGNAL(findTextFinished(const QWebEngineFindTextResult &)), this, SLOT(findTextFinished(const QWebEngineFindTextResult &)));
 224
 225     // Handle full screen requests.
 226     connect(webEnginePagePointer, SIGNAL(fullScreenRequested(QWebEngineFullScreenRequest)), this, SLOT(fullScreenRequested(QWebEngineFullScreenRequest)));
 227
 228     // Listen for hovered link URLs.
 229     connect(webEnginePagePointer, SIGNAL(linkHovered(const QString)), this, SLOT(pageLinkHovered(const QString)));
 230
 231     // Handle file downloads.
 232     connect(webEngineProfilePointer, SIGNAL(downloadRequested(QWebEngineDownloadItem *)), this, SLOT(showSaveDialog(QWebEngineDownloadItem *)));
 233
 234     // Instantiate the URL request interceptor.
 235     UrlRequestInterceptor *urlRequestInterceptorPointer = new UrlRequestInterceptor();
 236
 237     // Set the URL request interceptor.
 238     webEngineProfilePointer->setUrlRequestInterceptor(urlRequestInterceptorPointer);
 239
 240     // Reapply the domain settings when the host changes.
 241     connect(urlRequestInterceptorPointer, SIGNAL(applyDomainSettings(QString)), this, SLOT(applyDomainSettingsWithoutReloading(QString)));
 242
 243     // Set the local storage filter.
 244     webEngineCookieStorePointer->setCookieFilter([privacyWebEngineViewPointer](const QWebEngineCookieStore::FilterRequest &filterRequest)
 245     {
 246         // Block all third party local storage requests, including the sneaky ones that don't register a first party URL.
 247         if (filterRequest.thirdParty || (filterRequest.firstPartyUrl == QStringLiteral("")))
 248         {
 249             //qDebug().noquote().nospace() << "Third-party request blocked:  " << filterRequest.origin;
 250
 251             // Return false.
 252             return false;
 253         }
 254
 255         // Allow the request if local storage is enabled.
 256         if (privacyWebEngineViewPointer->localStorageEnabled)
 257         {
 258             //qDebug().noquote().nospace() << "Request allowed by local storage:  " << filterRequest.origin;
 259
 260             // Return true.
 261             return true;
 262         }
 263
 264         //qDebug().noquote().nospace() << "Request blocked by default:  " << filterRequest.origin;
 265
 266         // Block any remaining local storage requests.
 267         return false;
 268     });
 269
 270     // Disable JavaScript by default (this prevents JavaScript from being enabled on a new tab before domain settings are loaded).
 271     webEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, false);
 272
 273     // Don't allow JavaScript to open windows.
 274     webEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptCanOpenWindows, false);
 275
 276     // Allow keyboard navigation.
 277     webEngineSettingsPointer->setAttribute(QWebEngineSettings::SpatialNavigationEnabled, true);
 278
 279     // Enable full screen support.
 280     webEngineSettingsPointer->setAttribute(QWebEngineSettings::FullScreenSupportEnabled, true);
 281
 282     // Require user interaction to play media.
 283     webEngineSettingsPointer->setAttribute(QWebEngineSettings::PlaybackRequiresUserGesture, true);
 284
 285     // Limit WebRTC to public IP addresses.
 286     webEngineSettingsPointer->setAttribute(QWebEngineSettings::WebRTCPublicInterfacesOnly, true);
 287
 288     // Enable the PDF viewer (it should be enabled by default, but it is nice to be explicit in case the defaults change).
 289     webEngineSettingsPointer->setAttribute(QWebEngineSettings::PdfViewerEnabled, true);
 290
 291     // Plugins must be enabled for the PDF viewer to work.  <https://doc.qt.io/qt-5/qtwebengine-features.html#pdf-file-viewing>
 292     webEngineSettingsPointer->setAttribute(QWebEngineSettings::PluginsEnabled, true);
 293
 294     // Update the cookies action.
 295     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::updateCookiesAction, [privacyWebEngineViewPointer, this] (const int numberOfCookies)
 296     {
 297         // Update the cookie action if the specified privacy WebEngine view is the current privacy WebEngine view.
 298         if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
 299             emit updateCookiesAction(numberOfCookies);
 300     });
 301
 302     // Process cookie changes.
 303     connect(webEngineCookieStorePointer, SIGNAL(cookieAdded(QNetworkCookie)), privacyWebEngineViewPointer, SLOT(addCookieToList(QNetworkCookie)));
 304     connect(webEngineCookieStorePointer, SIGNAL(cookieRemoved(QNetworkCookie)), privacyWebEngineViewPointer, SLOT(removeCookieFromList(QNetworkCookie)));
 305
 306     // Get a list of durable cookies.
 307     QList<QNetworkCookie*> *durableCookiesListPointer = CookiesDatabase::getCookies();
 308
 309     // Add the durable cookies to the store.
 310     for (QNetworkCookie *cookiePointer : *durableCookiesListPointer)
 311         addCookieToStore(*cookiePointer, webEngineCookieStorePointer);
 312
 313     // Update the title when it changes.
 314     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::titleChanged, [this, privacyWebEngineViewPointer] (const QString &title)
 315     {
 316         // Get the index for this tab.
 317         int tabIndex = tabWidgetPointer->indexOf(privacyWebEngineViewPointer);
 318
 319         // Update the title for this tab.
 320         tabWidgetPointer->setTabText(tabIndex, title);
 321
 322         // Update the window title if this is the current tab.
 323         if (tabIndex == tabWidgetPointer->currentIndex())
 324             emit updateWindowTitle(title);
 325     });
 326
 327     // Update the icon when it changes.
 328     connect(privacyWebEngineViewPointer, &PrivacyWebEngineView::iconChanged, [privacyWebEngineViewPointer, this] (const QIcon &icon)
 329     {
 330         // Get the index for this tab.
 331         int tabIndex = tabWidgetPointer->indexOf(privacyWebEngineViewPointer);
 332
 333         // Update the icon for this tab.
 334         if (icon.isNull())
 335             tabWidgetPointer->setTabIcon(tabIndex, defaultTabIcon);
 336         else
 337             tabWidgetPointer->setTabIcon(tabIndex, icon);
 338     });
 339
 340     // Enable spell checking.
 341     webEngineProfilePointer->setSpellCheckEnabled(true);
 342
 343     // Set the spell check language.
 344     webEngineProfilePointer->setSpellCheckLanguages(Settings::spellCheckLanguages());
 345
 346     // Populate the zoom factor.  This is necessary if a URL is being loaded, like a local URL, that does not trigger `applyDomainSettings()`.
 347     privacyWebEngineViewPointer->setZoomFactor(Settings::zoomFactor());
 348
 349     // Move to the new tab if it is not a background tab.
 350     if (!backgroundTab)
 351         tabWidgetPointer->setCurrentIndex(newTabIndex);
 352
 353     // Clear the URL line edit focus so that it populates correctly when opening a new tab from the context menu.
 354     if (removeUrlLineEditFocus)
 355         emit clearUrlLineEditFocus();
 356
 357     // Return the privacy WebEngine view pointer.
 358     return privacyWebEngineViewPointer;
 359 }
 360
 361 void TabWidget::applyApplicationSettings()
 362 {
 363     // Set the tab position.
 364     if (Settings::tabsOnTop())
 365         tabWidgetPointer->setTabPosition(QTabWidget::North);
 366     else
 367         tabWidgetPointer->setTabPosition(QTabWidget::South);
 368
 369     // Set the search engine URL.
 370     searchEngineUrl = SearchEngineHelper::getSearchUrl(Settings::searchEngine());
 371
 372     // Emit the update search engine actions signal.
 373     emit updateSearchEngineActions(Settings::searchEngine(), true);
 374 }
 375
 376 // This exists as a separate function from `applyDomainSettings()` so it can be listed as a slot and function without the need for a boolean argument.
 377 // Once <https://redmine.stoutner.com/issues/799> has been resolved this can be `const`.
 378 void TabWidget::applyDomainSettingsAndReload()
 379 {
 380     // Apply the domain settings.  `true` reloads the website.
 381     applyDomainSettings(currentPrivacyWebEngineViewPointer->url().host(), true);
 382 }
 383
 384 // This exists as a separate function from `applyDomainSettings()` so it can be listed as a slot and function without the need for a boolean argument.
 385 // Once <https://redmine.stoutner.com/issues/799> has been resolved this can be `const`.
 386 void TabWidget::applyDomainSettingsWithoutReloading(const QString &hostname)
 387 {
 388     // Apply the domain settings  `false` does not reload the website.
 389     applyDomainSettings(hostname, false);
 390 }
 391
 392 // Once <https://redmine.stoutner.com/issues/799> has been resolved this can be `const`.
 393 void TabWidget::applyDomainSettings(const QString &hostname, const bool reloadWebsite)
 394 {
 395     // Get the record for the hostname.
 396     QSqlQuery domainQuery = DomainsDatabase::getDomainQuery(hostname);
 397
 398     // Check if the hostname has domain settings.
 399     if (domainQuery.isValid())  // The hostname has domain settings.
 400     {
 401         // Get the domain record.
 402         QSqlRecord domainRecord = domainQuery.record();
 403
 404         // Store the domain settings name.
 405         currentPrivacyWebEngineViewPointer->domainSettingsName = domainRecord.field(DomainsDatabase::DOMAIN_NAME).value().toString();
 406
 407         // Set the JavaScript status.
 408         switch (domainRecord.field(DomainsDatabase::JAVASCRIPT).value().toInt())
 409         {
 410             // Set the default JavaScript status.
 411             case (DomainsDatabase::SYSTEM_DEFAULT):
 412             {
 413                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, Settings::javaScriptEnabled());
 414
 415                 break;
 416             }
 417
 418             // Disable JavaScript.
 419             case (DomainsDatabase::DISABLED):
 420             {
 421                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, false);
 422
 423                 break;
 424             }
 425
 426             // Enable JavaScript.
 427             case (DomainsDatabase::ENABLED):
 428             {
 429                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, true);
 430
 431                 break;
 432             }
 433         }
 434
 435         // Set the local storage status.
 436         switch (domainRecord.field(DomainsDatabase::LOCAL_STORAGE).value().toInt())
 437         {
 438             // Set the default local storage status.
 439             case (DomainsDatabase::SYSTEM_DEFAULT):
 440             {
 441                 currentPrivacyWebEngineViewPointer->localStorageEnabled = Settings::localStorageEnabled();
 442
 443                 break;
 444             }
 445
 446             // Disable local storage.
 447             case (DomainsDatabase::DISABLED):
 448             {
 449                 currentPrivacyWebEngineViewPointer->localStorageEnabled = false;
 450
 451                 break;
 452             }
 453
 454             // Enable local storage.
 455             case (DomainsDatabase::ENABLED):
 456             {
 457                 currentPrivacyWebEngineViewPointer->localStorageEnabled = true;
 458
 459                 break;
 460             }
 461         }
 462
 463         // Set the DOM storage status.
 464         switch (domainRecord.field(DomainsDatabase::DOM_STORAGE).value().toInt())
 465         {
 466             // Set the default DOM storage status.  QWebEngineSettings confusingly calls this local storage.
 467             case (DomainsDatabase::SYSTEM_DEFAULT):
 468             {
 469                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, Settings::domStorageEnabled());
 470
 471                 break;
 472             }
 473
 474             // Disable DOM storage.  QWebEngineSettings confusingly calls this local storage.
 475             case (DomainsDatabase::DISABLED):
 476             {
 477                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, false);
 478
 479                 break;
 480             }
 481
 482             // Enable DOM storage.  QWebEngineSettings confusingly calls this local storage.
 483             case (DomainsDatabase::ENABLED):
 484             {
 485                 currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, true);
 486
 487                 break;
 488             }
 489         }
 490
 491         // Set the user agent.
 492         currentWebEngineProfilePointer->setHttpUserAgent(UserAgentHelper::getResultingDomainSettingsUserAgent(domainRecord.field(DomainsDatabase::USER_AGENT).value().toString()));
 493
 494         // Check if a custom zoom factor is set.
 495         if (domainRecord.field(DomainsDatabase::ZOOM_FACTOR).value().toInt())
 496         {
 497             // Store the current zoom factor.
 498             currentZoomFactor = domainRecord.field(DomainsDatabase::CUSTOM_ZOOM_FACTOR).value().toDouble();
 499         }
 500         else
 501         {
 502             // Reset the current zoom factor.
 503             currentZoomFactor = Settings::zoomFactor();
 504         }
 505
 506         // Set the zoom factor.    The use of `currentZoomFactor` can be removed once <https://redmine.stoutner.com/issues/799> has been resolved.
 507         currentPrivacyWebEngineViewPointer->setZoomFactor(currentZoomFactor);
 508     }
 509     else  // The hostname does not have domain settings.
 510     {
 511         // Reset the domain settings name.
 512         currentPrivacyWebEngineViewPointer->domainSettingsName = QLatin1String("");
 513
 514         // Set the JavaScript status.
 515         currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, Settings::javaScriptEnabled());
 516
 517         // Set the local storage status.
 518         currentPrivacyWebEngineViewPointer->localStorageEnabled = Settings::localStorageEnabled();
 519
 520         // Set DOM storage.  In QWebEngineSettings it is called Local Storage.
 521         currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, Settings::domStorageEnabled());
 522
 523         // Set the user agent.
 524         currentWebEngineProfilePointer->setHttpUserAgent(UserAgentHelper::getUserAgentFromDatabaseName(Settings::userAgent()));
 525
 526         // Store the current zoom factor.  This can be removed once <https://redmine.stoutner.com/issues/799> has been resolved.
 527         currentZoomFactor = Settings::zoomFactor();
 528
 529         // Set the zoom factor.
 530         currentPrivacyWebEngineViewPointer->setZoomFactor(Settings::zoomFactor());
 531     }
 532
 533     // Update the UI.
 534     emit updateDomainSettingsIndicator(currentPrivacyWebEngineViewPointer->domainSettingsName != QLatin1String(""));
 535     emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
 536     emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
 537     emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
 538     emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), true);
 539     emit updateZoomFactorAction(currentPrivacyWebEngineViewPointer->zoomFactor());
 540
 541     // Reload the website if requested.
 542     if (reloadWebsite)
 543         currentPrivacyWebEngineViewPointer->reload();
 544 }
 545
 546 void TabWidget::applyOnTheFlySearchEngine(QAction *searchEngineActionPointer)
 547 {
 548     // Store the search engine name.
 549     QString searchEngineName = searchEngineActionPointer->text();
 550
 551     // Strip out any `&` characters.
 552     searchEngineName.remove('&');
 553
 554     // Store the search engine string.
 555     searchEngineUrl = SearchEngineHelper::getSearchUrl(searchEngineName);
 556
 557     // Update the search engine actions.
 558     emit updateSearchEngineActions(searchEngineName, false);
 559 }
 560
 561 void TabWidget::applyOnTheFlyUserAgent(QAction *userAgentActionPointer) const
 562 {
 563     // Get the user agent name.
 564     QString userAgentName = userAgentActionPointer->text();
 565
 566     // Strip out any `&` characters.
 567     userAgentName.remove('&');
 568
 569     // Apply the user agent.
 570     currentWebEngineProfilePointer->setHttpUserAgent(userAgentHelperPointer->getUserAgentFromTranslatedName(userAgentName));
 571
 572     // Update the user agent actions.
 573     emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), false);
 574
 575     // Reload the website.
 576     currentPrivacyWebEngineViewPointer->reload();
 577 }
 578
 579 // This can be const once <https://redmine.stoutner.com/issues/799> has been resolved.
 580 void TabWidget::applyOnTheFlyZoomFactor(const double &zoomFactor)
 581 {
 582     // Update the current zoom factor.  This can be removed once <https://redmine.stoutner.com/issues/799> has been resolved.
 583     currentZoomFactor = zoomFactor;
 584
 585     // Set the zoom factor.
 586     currentPrivacyWebEngineViewPointer->setZoomFactor(zoomFactor);
 587 }
 588
 589 void TabWidget::applySpellCheckLanguages() const
 590 {
 591     // Get the number of tab.
 592     int numberOfTabs = tabWidgetPointer->count();
 593
 594     // Set the spell check languages for each tab.
 595     for (int i = 0; i < numberOfTabs; ++i)
 596     {
 597         // Get the WebEngine view pointer.
 598         PrivacyWebEngineView *webEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(tabWidgetPointer->currentWidget());
 599
 600         // Get the WebEngine page pointer.
 601         QWebEnginePage *webEnginePagePointer = webEngineViewPointer->page();
 602
 603         // Get the WebEngine profile pointer.
 604         QWebEngineProfile *webEngineProfilePointer = webEnginePagePointer->profile();
 605
 606         // Set the spell check languages.
 607         webEngineProfilePointer->setSpellCheckLanguages(Settings::spellCheckLanguages());
 608     }
 609 }
 610
 611 void TabWidget::back() const
 612 {
 613     // Go back.
 614     currentPrivacyWebEngineViewPointer->back();
 615 }
 616
 617 void TabWidget::deleteAllCookies() const
 618 {
 619     // Delete all the cookies.
 620     currentWebEngineCookieStorePointer->deleteAllCookies();
 621 }
 622
 623 void TabWidget::deleteCookieFromStore(const QNetworkCookie &cookie) const
 624 {
 625     // Delete the cookie.
 626     currentWebEngineCookieStorePointer->deleteCookie(cookie);
 627 }
 628
 629 void TabWidget::deleteTab(const int tabIndex)
 630 {
 631     // Get the privacy WebEngine view.
 632     PrivacyWebEngineView *privacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(tabWidgetPointer->widget(tabIndex));
 633
 634     // Proccess the tab delete according to the number of tabs.
 635     if (tabWidgetPointer->count() > 1)  // There is more than one tab.
 636     {
 637         // Delete the tab.
 638         tabWidgetPointer->removeTab(tabIndex);
 639
 640         // Delete the WebEngine page to prevent the following error:  `Release of profile requested but WebEnginePage still not deleted. Expect troubles !`
 641         delete privacyWebEngineViewPointer->page();
 642
 643         // Delete the privacy WebEngine view.
 644         delete privacyWebEngineViewPointer;
 645     }
 646     else  // There is only one tab.
 647     {
 648         // Close Privacy Browser.
 649         window()->close();
 650     }
 651 }
 652
 653 void TabWidget::findPrevious(const QString &text) const
 654 {
 655     // Store the current text.
 656     currentPrivacyWebEngineViewPointer->findString = text;
 657
 658     // Find the previous text in the current privacy WebEngine.
 659     if (currentPrivacyWebEngineViewPointer->findCaseSensitive)
 660         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindCaseSensitively|QWebEnginePage::FindBackward);
 661     else
 662         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindBackward);
 663 }
 664
 665 void TabWidget::findText(const QString &text) const
 666 {
 667     // Store the current text.
 668     currentPrivacyWebEngineViewPointer->findString = text;
 669
 670     // Find the text in the current privacy WebEngine.
 671     if (currentPrivacyWebEngineViewPointer->findCaseSensitive)
 672         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindCaseSensitively);
 673     else
 674         currentPrivacyWebEngineViewPointer->findText(text);
 675
 676     // Clear the currently selected text in the WebEngine page if the find text is empty.
 677     if (text.isEmpty())
 678         currentWebEnginePagePointer->action(QWebEnginePage::Unselect)->activate(QAction::Trigger);
 679 }
 680
 681 void TabWidget::findTextFinished(const QWebEngineFindTextResult &findTextResult)
 682 {
 683     // Update the find text UI if it wasn't simply wiping the current find text selection.  Otherwise the UI temporarially flashes `0/0`.
 684     if (wipingCurrentFindTextSelection)  // The current selection is being wiped.
 685     {
 686         // Reset the flag.
 687         wipingCurrentFindTextSelection = false;
 688     }
 689     else  // A new search has been performed.
 690     {
 691         // Store the result.
 692         currentPrivacyWebEngineViewPointer->findTextResult = findTextResult;
 693
 694         // Update the UI.
 695         emit updateFindTextResults(findTextResult);
 696     }
 697 }
 698
 699 void TabWidget::forward() const
 700 {
 701     // Go forward.
 702     currentPrivacyWebEngineViewPointer->forward();
 703 }
 704
 705 void TabWidget::fullScreenRequested(QWebEngineFullScreenRequest fullScreenRequest) const
 706 {
 707     // Make it so.
 708     emit fullScreenRequested(fullScreenRequest.toggleOn());
 709
 710     // Accept the request.
 711     fullScreenRequest.accept();
 712 }
 713
 714 std::list<QNetworkCookie>* TabWidget::getCookieList() const
 715 {
 716     // Return the current cookie list.
 717     return currentPrivacyWebEngineViewPointer->cookieListPointer;
 718 }
 719
 720 QString& TabWidget::getDomainSettingsName() const
 721 {
 722     // Return the domain settings name.
 723     return currentPrivacyWebEngineViewPointer->domainSettingsName;
 724 }
 725
 726 void TabWidget::home() const
 727 {
 728     // Load the homepage.
 729     currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(Settings::homepage()));
 730 }
 731
 732 PrivacyWebEngineView* TabWidget::loadBlankInitialWebsite()
 733 {
 734     // Apply the application settings.
 735     applyApplicationSettings();
 736
 737     // Return the current privacy WebEngine view pointer.
 738     return currentPrivacyWebEngineViewPointer;
 739 }
 740
 741 void TabWidget::loadInitialWebsite()
 742 {
 743     // Apply the application settings.
 744     applyApplicationSettings();
 745
 746     // Get the arguments.
 747     QStringList argumentsStringList = qApp->arguments();
 748
 749     // Check to see if the arguments lists contains a URL.
 750     if (argumentsStringList.size() > 1)
 751     {
 752         // Load the URL from the arguments list.
 753         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(argumentsStringList.at(1)));
 754     }
 755     else
 756     {
 757         // Load the homepage.
 758         home();
 759     }
 760 }
 761
 762 void TabWidget::loadUrlFromLineEdit(QString url) const
 763 {
 764     // Decide if the text is more likely to be a URL or a search.
 765     if (url.startsWith("file://"))  // The text is likely a file URL.
 766     {
 767         // Load the URL.
 768         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(url));
 769     }
 770     else if (url.contains("."))  // The text is likely a URL.
 771     {
 772         // Check if the URL does not start with a valid protocol.
 773         if (!url.startsWith("http"))
 774         {
 775             // Add `https://` to the beginning of the URL.
 776             url = "https://" + url;
 777         }
 778
 779         // Load the URL.
 780         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(url));
 781     }
 782     else  // The text is likely a search.
 783     {
 784         // Load the search.
 785         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(searchEngineUrl + url));
 786     }
 787 }
 788
 789 void TabWidget::mouseBack() const
 790 {
 791     // Go back if possible.
 792     if (currentPrivacyWebEngineViewPointer->isActiveWindow() && currentWebEngineHistoryPointer->canGoBack())
 793     {
 794         // Clear the URL line edit focus.
 795         emit clearUrlLineEditFocus();
 796
 797         // Go back.
 798         currentPrivacyWebEngineViewPointer->back();
 799     }
 800 }
 801
 802 void TabWidget::mouseForward() const
 803 {
 804     // Go forward if possible.
 805     if (currentPrivacyWebEngineViewPointer->isActiveWindow() && currentWebEngineHistoryPointer->canGoForward())
 806     {
 807         // Clear the URL line edit focus.
 808         emit clearUrlLineEditFocus();
 809
 810         // Go forward.
 811         currentPrivacyWebEngineViewPointer->forward();
 812     }
 813 }
 814
 815 void TabWidget::pageLinkHovered(const QString &linkUrl) const
 816 {
 817     // Emit a signal so that the browser window can update the status bar.
 818     emit linkHovered(linkUrl);
 819 }
 820
 821 void TabWidget::print() const
 822 {
 823     // Create a printer.
 824     QPrinter printer;
 825
 826     // Set the resolution to be 300 dpi.
 827     printer.setResolution(300);
 828
 829     // Create a printer dialog.
 830     QPrintDialog printDialog(&printer, currentPrivacyWebEngineViewPointer);
 831
 832     // Display the dialog and print the page if instructed.
 833     if (printDialog.exec() == QDialog::Accepted)
 834         printWebpage(&printer);
 835 }
 836
 837 void TabWidget::printPreview() const
 838 {
 839     // Create a printer.
 840     QPrinter printer;
 841
 842     // Set the resolution to be 300 dpi.
 843     printer.setResolution(300);
 844
 845     // Create a print preview dialog.
 846     QPrintPreviewDialog printPreviewDialog(&printer, currentPrivacyWebEngineViewPointer);
 847
 848     // Generate the print preview.
 849     connect(&printPreviewDialog, SIGNAL(paintRequested(QPrinter *)), this, SLOT(printWebpage(QPrinter *)));
 850
 851     // Display the dialog.
 852     printPreviewDialog.exec();
 853 }
 854
 855 void TabWidget::printWebpage(QPrinter *printerPointer) const
 856 {
 857     // Create an event loop.  For some reason, the print preview doesn't produce any output unless it is run inside an event loop.
 858     QEventLoop eventLoop;
 859
 860     // Print the webpage, converting the callback above into a `QWebEngineCallback<bool>`.
 861     // Printing requires that the printer be a pointer, not a reference, or it will crash with much cursing.
 862     currentWebEnginePagePointer->print(printerPointer, [&eventLoop](bool printSuccess)
 863     {
 864         // Instruct the compiler to ignore the unused parameter.
 865         (void) printSuccess;
 866
 867         // Quit the loop.
 868         eventLoop.quit();
 869     });
 870
 871     // Execute the loop.
 872     eventLoop.exec();
 873 }
 874
 875 void TabWidget::refresh() const
 876 {
 877     // Reload the website.
 878     currentPrivacyWebEngineViewPointer->reload();
 879 }
 880
 881 void TabWidget::setTabBarVisible(const bool visible) const
 882 {
 883     // Set the tab bar visibility.
 884     tabWidgetPointer->tabBar()->setVisible(visible);
 885 }
 886
 887 void TabWidget::showSaveDialog(QWebEngineDownloadItem *webEngineDownloadItemPointer)
 888 {
 889     // Get the download attributes.
 890     QUrl downloadUrl = webEngineDownloadItemPointer->url();
 891     QString mimeTypeString = webEngineDownloadItemPointer->mimeType();
 892     QString suggestedFileName = webEngineDownloadItemPointer->suggestedFileName();
 893     int totalBytes = webEngineDownloadItemPointer->totalBytes();
 894
 895     // Check to see if local storage (cookies) is enabled.
 896     if (currentPrivacyWebEngineViewPointer->localStorageEnabled)  // Local storage (cookies) is enabled.  Use WebEngine's downloader.
 897     {
 898         // Instantiate the save dialog.
 899         SaveDialog *saveDialogPointer = new SaveDialog(downloadUrl, mimeTypeString, totalBytes);
 900
 901         // Display the save dialog.
 902         int saveDialogResult = saveDialogPointer->exec();
 903
 904         // Process the save dialog results.
 905         if (saveDialogResult == QDialog::Accepted)  // Save was selected.
 906         {
 907             // Get the download directory.
 908             QString downloadDirectory = Settings::downloadLocation();
 909
 910             // Resolve the system download directory if specified.
 911             if (downloadDirectory == QLatin1String("System Download Directory"))
 912                 downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
 913
 914             // Display a save file dialog.
 915             QString saveFilePath = QFileDialog::getSaveFileName(this, i18nc("Save file dialog caption", "Save File"), downloadDirectory + QLatin1Char('/') + suggestedFileName);
 916
 917             // Process the save file path.
 918             if (!saveFilePath.isEmpty())  // The file save path is populated.
 919             {
 920                 // Create a save file path file info.
 921                 QFileInfo saveFilePathFileInfo = QFileInfo(saveFilePath);
 922
 923                 // Get the canonical save path and file name.
 924                 QString absoluteSavePath = saveFilePathFileInfo.absolutePath();
 925                 QString saveFileName = saveFilePathFileInfo.fileName();
 926
 927                 // Set the download directory and file name.
 928                 webEngineDownloadItemPointer->setDownloadDirectory(absoluteSavePath);
 929                 webEngineDownloadItemPointer->setDownloadFileName(saveFileName);
 930
 931                 // Create a file download notification.
 932                 KNotification *fileDownloadNotificationPointer = new KNotification(QLatin1String("FileDownload"));
 933
 934                 // Set the notification title.
 935                 fileDownloadNotificationPointer->setTitle(i18nc("Download notification title", "Download"));
 936
 937                 // Set the notification text.
 938                 fileDownloadNotificationPointer->setText(i18nc("Downloading notification text", "Downloading %1", saveFileName));
 939
 940                 // Set the notification icon.
 941                 fileDownloadNotificationPointer->setIconName(QLatin1String("download"));
 942
 943                 // Set the action list cancel button.
 944                 fileDownloadNotificationPointer->setActions(QStringList({i18nc("Download notification action","Cancel")}));
 945
 946                 // Set the notification to display indefinitely.
 947                 fileDownloadNotificationPointer->setFlags(KNotification::Persistent);
 948
 949                 // Prevent the notification from being autodeleted if it is closed.  Otherwise, the updates to the notification below cause a crash.
 950                 fileDownloadNotificationPointer->setAutoDelete(false);
 951
 952                 // Display the notification.
 953                 fileDownloadNotificationPointer->sendEvent();
 954
 955                 // Handle clicks on the cancel button.
 956                 connect(fileDownloadNotificationPointer, &KNotification::action1Activated, [webEngineDownloadItemPointer, saveFileName] ()
 957                 {
 958                     // Cancel the download.
 959                     webEngineDownloadItemPointer->cancel();
 960
 961                     // Create a file download notification.
 962                     KNotification *canceledDownloadNotificationPointer = new KNotification(QLatin1String("FileDownload"));
 963
 964                     // Set the notification title.
 965                     canceledDownloadNotificationPointer->setTitle(i18nc("Download notification title", "Download"));
 966
 967                     // Set the new text.
 968                     canceledDownloadNotificationPointer->setText(i18nc("Download canceled notification", "%1 download canceled", saveFileName));
 969
 970                     // Set the notification icon.
 971                     canceledDownloadNotificationPointer->setIconName(QLatin1String("download"));
 972
 973                     // Display the notification.
 974                     canceledDownloadNotificationPointer->sendEvent();
 975                 });
 976
 977                 // Update the notification when the download progresses.
 978                 connect(webEngineDownloadItemPointer, &QWebEngineDownloadItem::downloadProgress, [fileDownloadNotificationPointer, saveFileName] (qint64 bytesReceived, qint64 totalBytes)
 979                 {
 980                     // Calculate the download percentage.
 981                     int downloadPercentage = 100 * bytesReceived / totalBytes;
 982
 983                     // Set the new text.  Total bytes will be 0 if the download size is unknown.
 984                     if (totalBytes > 0)
 985                         fileDownloadNotificationPointer->setText(i18nc("Download progress notification text", "%1\% of %2 downloaded (%3 of %4 bytes)", downloadPercentage, saveFileName,
 986                                                                     bytesReceived, totalBytes));
 987                     else
 988                         fileDownloadNotificationPointer->setText(i18nc("Download progress notification text", "%1:  %2 bytes downloaded", saveFileName, bytesReceived));
 989
 990                     // Display the updated notification.
 991                     fileDownloadNotificationPointer->update();
 992                 });
 993
 994                 // Update the notification when the download finishes.  The save file name must be copied into the lambda or a crash occurs.
 995                 connect(webEngineDownloadItemPointer, &QWebEngineDownloadItem::finished, [fileDownloadNotificationPointer, saveFileName, saveFilePath] ()
 996                 {
 997                     // Set the new text.
 998                     fileDownloadNotificationPointer->setText(i18nc("Download finished notification text", "%1 download finished", saveFileName));
 999
1000                     // Set the URL so the file options will be displayed.
1001                     fileDownloadNotificationPointer->setUrls(QList<QUrl> {QUrl(saveFilePath)});
1002
1003                     // Remove the actions from the notification.
1004                     fileDownloadNotificationPointer->setActions(QStringList());
1005
1006                     // Set the notification to disappear after a timeout.
1007                     fileDownloadNotificationPointer->setFlags(KNotification::CloseOnTimeout);
1008
1009                     // Display the updated notification.
1010                     fileDownloadNotificationPointer->update();
1011                 });
1012
1013                 // Start the download.
1014                 webEngineDownloadItemPointer->accept();
1015             }
1016             else  // The file save path is not populated.
1017             {
1018                 // Cancel the download.
1019                 webEngineDownloadItemPointer->cancel();
1020             }
1021         }
1022         else  // Cancel was selected.
1023         {
1024             // Cancel the download.
1025             webEngineDownloadItemPointer->cancel();
1026         }
1027     }
1028     else  // Local storage (cookies) is disabled.  Use KDE's native downloader.
1029           // This must use the show command to launch a separate dialog which cancels WebEngine's automatic background download of the file to a temporary location.
1030     {
1031         // Instantiate the save dialog.  `true` instructs it to use the native downloader
1032         SaveDialog *saveDialogPointer = new SaveDialog(downloadUrl, mimeTypeString, totalBytes, suggestedFileName, true);
1033
1034         // Connect the save button.
1035         connect(saveDialogPointer, SIGNAL(useNativeDownloader(QUrl &, QString &)), this, SLOT(useNativeDownloader(QUrl &, QString &)));
1036
1037         // Show the dialog.
1038         saveDialogPointer->show();
1039     }
1040 }
1041
1042 void TabWidget::toggleDomStorage() const
1043 {
1044     // Toggle DOM storage.
1045     currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, !currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1046
1047     // Update the DOM storage action.
1048     emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1049
1050     // Reload the website.
1051     currentPrivacyWebEngineViewPointer->reload();
1052 }
1053
1054 void TabWidget::toggleFindCaseSensitive(const QString &text)
1055 {
1056     // Toggle find case sensitive.
1057     currentPrivacyWebEngineViewPointer->findCaseSensitive = !currentPrivacyWebEngineViewPointer->findCaseSensitive;
1058
1059     // Set the wiping current find text selection flag.
1060     wipingCurrentFindTextSelection = true;
1061
1062     // Wipe the previous search.  Otherwise currently highlighted words will remain highlighted.
1063     findText(QLatin1String(""));
1064
1065     // Update the find text.
1066     findText(text);
1067 }
1068
1069 void TabWidget::toggleJavaScript() const
1070 {
1071     // Toggle JavaScript.
1072     currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, !currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1073
1074     // Update the JavaScript action.
1075     emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1076
1077     // Reload the website.
1078     currentPrivacyWebEngineViewPointer->reload();
1079 }
1080
1081 void TabWidget::toggleLocalStorage()
1082 {
1083     // Toggle local storage.
1084     currentPrivacyWebEngineViewPointer->localStorageEnabled = !currentPrivacyWebEngineViewPointer->localStorageEnabled;
1085
1086     // Update the local storage action.
1087     emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
1088
1089     // Reload the website.
1090     currentPrivacyWebEngineViewPointer->reload();
1091 }
1092
1093 void TabWidget::updateUiWithTabSettings()
1094 {
1095     // Update the current WebEngine pointers.
1096     currentPrivacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(tabWidgetPointer->currentWidget());
1097     currentWebEngineSettingsPointer = currentPrivacyWebEngineViewPointer->settings();
1098     currentWebEnginePagePointer = currentPrivacyWebEngineViewPointer->page();
1099     currentWebEngineProfilePointer = currentWebEnginePagePointer->profile();
1100     currentWebEngineHistoryPointer = currentWebEnginePagePointer->history();
1101     currentWebEngineCookieStorePointer = currentWebEngineProfilePointer->cookieStore();
1102
1103     // Clear the URL line edit focus.
1104     emit clearUrlLineEditFocus();
1105
1106     // Update the actions.
1107     emit updateBackAction(currentWebEngineHistoryPointer->canGoBack());
1108     emit updateCookiesAction(currentPrivacyWebEngineViewPointer->cookieListPointer->size());
1109     emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1110     emit updateForwardAction(currentWebEngineHistoryPointer->canGoForward());
1111     emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1112     emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
1113     emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), true);
1114     emit updateZoomFactorAction(currentPrivacyWebEngineViewPointer->zoomFactor());
1115
1116     // Update the URL.
1117     emit updateWindowTitle(currentPrivacyWebEngineViewPointer->title());
1118     emit updateDomainSettingsIndicator(currentPrivacyWebEngineViewPointer->domainSettingsName != QLatin1String(""));
1119     emit updateUrlLineEdit(currentPrivacyWebEngineViewPointer->url());
1120
1121     // Update the find text.
1122     emit updateFindText(currentPrivacyWebEngineViewPointer->findString, currentPrivacyWebEngineViewPointer->findCaseSensitive);
1123     emit updateFindTextResults(currentPrivacyWebEngineViewPointer->findTextResult);
1124
1125     // Update the progress bar.
1126     if (currentPrivacyWebEngineViewPointer->loadProgressInt >= 0)
1127         emit showProgressBar(currentPrivacyWebEngineViewPointer->loadProgressInt);
1128     else
1129         emit hideProgressBar();
1130 }
1131
1132 void TabWidget::useNativeDownloader(QUrl &downloadUrl, QString &suggestedFileName)
1133 {
1134     // Get the download directory.
1135     QString downloadDirectory = Settings::downloadLocation();
1136
1137     // Resolve the system download directory if specified.
1138     if (downloadDirectory == QLatin1String("System Download Directory"))
1139         downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
1140
1141     // Create a save file dialog.
1142     QFileDialog *saveFileDialogPointer = new QFileDialog(this, i18nc("Save file dialog caption", "Save File"), downloadDirectory);
1143
1144     // Tell the dialog to use a save button.
1145     saveFileDialogPointer->setAcceptMode(QFileDialog::AcceptSave);
1146
1147     // Populate the file name from the download item pointer.
1148     saveFileDialogPointer->selectFile(suggestedFileName);
1149
1150     // Prevent interaction with the parent window while the dialog is open.
1151     saveFileDialogPointer->setWindowModality(Qt::WindowModal);
1152
1153     // Process the saving of the file.  The save file dialog pointer must be captured directly instead of by reference or nasty crashes occur.
1154     auto saveFile = [saveFileDialogPointer, downloadUrl] ()
1155     {
1156         // Get the save location.  The dialog box should only allow the selecting of one file location.
1157         QUrl saveLocation = saveFileDialogPointer->selectedUrls().value(0);
1158
1159         // Create a file copy job.  `-1` creates the file with default permissions.
1160         KIO::FileCopyJob *fileCopyJobPointer = KIO::file_copy(downloadUrl, saveLocation, -1, KIO::Overwrite);
1161
1162         // Set the download job to display any error messages.
1163         fileCopyJobPointer->uiDelegate()->setAutoErrorHandlingEnabled(true);
1164
1165         // Start the download.
1166         fileCopyJobPointer->start();
1167     };
1168
1169     // Handle clicks on the save button.
1170     connect(saveFileDialogPointer, &QDialog::accepted, this, saveFile);
1171
1172     // Show the dialog.
1173     saveFileDialogPointer->show();
1174 }