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