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     // Apply the domain settings.  `true` reloads the website.
 491     currentPrivacyWebEngineViewPointer->applyDomainSettings(currentPrivacyWebEngineViewPointer->url().host(), true);
 492 }
 493
 494 void TabWidget::applyOnTheFlySearchEngine(QAction *searchEngineActionPointer)
 495 {
 496     // Store the search engine name.
 497     QString searchEngineName = searchEngineActionPointer->text();
 498
 499     // Strip out any `&` characters.
 500     searchEngineName.remove('&');
 501
 502     // Store the search engine string.
 503     searchEngineUrl = SearchEngineHelper::getSearchUrl(searchEngineName);
 504
 505     // Update the search engine actions.
 506     emit updateSearchEngineActions(searchEngineName, false);
 507 }
 508
 509 void TabWidget::applyOnTheFlyUserAgent(QAction *userAgentActionPointer) const
 510 {
 511     // Get the user agent name.
 512     QString userAgentName = userAgentActionPointer->text();
 513
 514     // Strip out any `&` characters.
 515     userAgentName.remove('&');
 516
 517     // Apply the user agent.
 518     currentWebEngineProfilePointer->setHttpUserAgent(userAgentHelperPointer->getUserAgentFromTranslatedName(userAgentName));
 519
 520     // Update the user agent actions.
 521     emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), false);
 522
 523     // Reload the website.
 524     currentPrivacyWebEngineViewPointer->reload();
 525 }
 526
 527 void TabWidget::applyOnTheFlyZoomFactor(const double &zoomFactor) const
 528 {
 529     // Set the zoom factor.
 530     currentPrivacyWebEngineViewPointer->setZoomFactor(zoomFactor);
 531 }
 532
 533 void TabWidget::applySpellCheckLanguages() const
 534 {
 535     // Get the number of tab.
 536     int numberOfTabs = qTabWidgetPointer->count();
 537
 538     // Set the spell check languages for each tab.
 539     for (int i = 0; i < numberOfTabs; ++i)
 540     {
 541         // Get the WebEngine view pointer.
 542         PrivacyWebEngineView *privacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(qTabWidgetPointer->widget(i));
 543
 544         // Get the WebEngine page pointer.
 545         QWebEnginePage *webEnginePagePointer = privacyWebEngineViewPointer->page();
 546
 547         // Get the WebEngine profile pointer.
 548         QWebEngineProfile *webEngineProfilePointer = webEnginePagePointer->profile();
 549
 550         // Set the spell check languages.
 551         webEngineProfilePointer->setSpellCheckLanguages(Settings::spellCheckLanguages());
 552     }
 553 }
 554
 555 void TabWidget::back() const
 556 {
 557     // Go back.
 558     currentPrivacyWebEngineViewPointer->back();
 559 }
 560
 561 void TabWidget::deleteAllCookies() const
 562 {
 563     // Delete all the cookies.
 564     currentWebEngineCookieStorePointer->deleteAllCookies();
 565 }
 566
 567 void TabWidget::deleteCookieFromStore(const QNetworkCookie &cookie) const
 568 {
 569     // Delete the cookie.
 570     currentWebEngineCookieStorePointer->deleteCookie(cookie);
 571 }
 572
 573 void TabWidget::deleteTab(const int tabIndex)
 574 {
 575     // Get the privacy WebEngine view.
 576     PrivacyWebEngineView *privacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(qTabWidgetPointer->widget(tabIndex));
 577
 578     // Process the tab delete according to the number of tabs.
 579     if (qTabWidgetPointer->count() > 1)  // There is more than one tab.
 580     {
 581         // Delete the tab.
 582         qTabWidgetPointer->removeTab(tabIndex);
 583
 584         // Delete the WebEngine page to prevent the following error:  `Release of profile requested but WebEnginePage still not deleted. Expect troubles !`
 585         delete privacyWebEngineViewPointer->page();
 586
 587         // Delete the privacy WebEngine view.
 588         delete privacyWebEngineViewPointer;
 589     }
 590     else  // There is only one tab.
 591     {
 592         // Close Privacy Browser.
 593         window()->close();
 594     }
 595 }
 596
 597 void TabWidget::findPrevious(const QString &text) const
 598 {
 599     // Store the current text.
 600     currentPrivacyWebEngineViewPointer->findString = text;
 601
 602     // Find the previous text in the current privacy WebEngine.
 603     if (currentPrivacyWebEngineViewPointer->findCaseSensitive)
 604         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindCaseSensitively|QWebEnginePage::FindBackward);
 605     else
 606         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindBackward);
 607 }
 608
 609 void TabWidget::findText(const QString &text) const
 610 {
 611     // Store the current text.
 612     currentPrivacyWebEngineViewPointer->findString = text;
 613
 614     // Find the text in the current privacy WebEngine.
 615     if (currentPrivacyWebEngineViewPointer->findCaseSensitive)
 616         currentPrivacyWebEngineViewPointer->findText(text, QWebEnginePage::FindCaseSensitively);
 617     else
 618         currentPrivacyWebEngineViewPointer->findText(text);
 619
 620     // Clear the currently selected text in the WebEngine page if the find text is empty.
 621     if (text.isEmpty())
 622         currentWebEnginePagePointer->action(QWebEnginePage::Unselect)->activate(QAction::Trigger);
 623 }
 624
 625 void TabWidget::findTextFinished(const QWebEngineFindTextResult &findTextResult)
 626 {
 627     // Update the find text UI if it wasn't simply wiping the current find text selection.  Otherwise the UI temporarily flashes `0/0`.
 628     if (wipingCurrentFindTextSelection)  // The current selection is being wiped.
 629     {
 630         // Reset the flag.
 631         wipingCurrentFindTextSelection = false;
 632     }
 633     else  // A new search has been performed.
 634     {
 635         // Store the result.
 636         currentPrivacyWebEngineViewPointer->findTextResult = findTextResult;
 637
 638         // Update the UI.
 639         emit updateFindTextResults(findTextResult);
 640     }
 641 }
 642
 643 void TabWidget::forward() const
 644 {
 645     // Go forward.
 646     currentPrivacyWebEngineViewPointer->forward();
 647 }
 648
 649 void TabWidget::fullScreenRequested(QWebEngineFullScreenRequest fullScreenRequest) const
 650 {
 651     // Make it so.
 652     emit fullScreenRequested(fullScreenRequest.toggleOn());
 653
 654     // Accept the request.
 655     fullScreenRequest.accept();
 656 }
 657
 658 std::list<QNetworkCookie>* TabWidget::getCookieList() const
 659 {
 660     // Return the current cookie list.
 661     return currentPrivacyWebEngineViewPointer->cookieListPointer;
 662 }
 663
 664 QString& TabWidget::getDomainSettingsName() const
 665 {
 666     // Return the domain settings name.
 667     return currentPrivacyWebEngineViewPointer->domainSettingsName;
 668 }
 669
 670 void TabWidget::home() const
 671 {
 672     // Load the homepage.
 673     currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(Settings::homepage()));
 674 }
 675
 676 PrivacyWebEngineView* TabWidget::loadBlankInitialWebsite()
 677 {
 678     // Apply the application settings.
 679     applyApplicationSettings();
 680
 681     // Return the current privacy WebEngine view pointer.
 682     return currentPrivacyWebEngineViewPointer;
 683 }
 684
 685 void TabWidget::loadInitialWebsite()
 686 {
 687     // Apply the application settings.
 688     applyApplicationSettings();
 689
 690     // Get the arguments.
 691     QStringList argumentsStringList = qApp->arguments();
 692
 693     // Check to see if the arguments lists contains a URL.
 694     if (argumentsStringList.size() > 1)
 695     {
 696         // Load the URL from the arguments list.
 697         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(argumentsStringList.at(1)));
 698     }
 699     else
 700     {
 701         // Load the homepage.
 702         home();
 703     }
 704 }
 705
 706 void TabWidget::loadUrlFromLineEdit(QString url) const
 707 {
 708     // Decide if the text is more likely to be a URL or a search.
 709     if (url.startsWith("file://"))  // The text is likely a file URL.
 710     {
 711         // Load the URL.
 712         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(url));
 713     }
 714     else if (url.contains("."))  // The text is likely a URL.
 715     {
 716         // Check if the URL does not start with a valid protocol.
 717         if (!url.startsWith("http"))
 718         {
 719             // Add `https://` to the beginning of the URL.
 720             url = "https://" + url;
 721         }
 722
 723         // Load the URL.
 724         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(url));
 725     }
 726     else  // The text is likely a search.
 727     {
 728         // Load the search.
 729         currentPrivacyWebEngineViewPointer->load(QUrl::fromUserInput(searchEngineUrl + url));
 730     }
 731 }
 732
 733 void TabWidget::mouseBack() const
 734 {
 735     // Go back if possible.
 736     if (currentPrivacyWebEngineViewPointer->isActiveWindow() && currentWebEngineHistoryPointer->canGoBack())
 737     {
 738         // Clear the URL line edit focus.
 739         emit clearUrlLineEditFocus();
 740
 741         // Go back.
 742         currentPrivacyWebEngineViewPointer->back();
 743     }
 744 }
 745
 746 void TabWidget::mouseForward() const
 747 {
 748     // Go forward if possible.
 749     if (currentPrivacyWebEngineViewPointer->isActiveWindow() && currentWebEngineHistoryPointer->canGoForward())
 750     {
 751         // Clear the URL line edit focus.
 752         emit clearUrlLineEditFocus();
 753
 754         // Go forward.
 755         currentPrivacyWebEngineViewPointer->forward();
 756     }
 757 }
 758
 759 void TabWidget::pageLinkHovered(const QString &linkUrl) const
 760 {
 761     // Emit a signal so that the browser window can update the status bar.
 762     emit linkHovered(linkUrl);
 763 }
 764
 765 void TabWidget::stopLoadingFavoriteIconMovie() const
 766 {
 767     // 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>
 768     loadingFavoriteIconMoviePointer->stop();
 769 }
 770
 771 void TabWidget::print() const
 772 {
 773     // Create a printer.
 774     QPrinter printer;
 775
 776     // Set the resolution to be 300 dpi.
 777     printer.setResolution(300);
 778
 779     // Create a printer dialog.
 780     QPrintDialog printDialog(&printer, currentPrivacyWebEngineViewPointer);
 781
 782     // Display the dialog and print the page if instructed.
 783     if (printDialog.exec() == QDialog::Accepted)
 784         printWebpage(&printer);
 785 }
 786
 787 void TabWidget::printPreview() const
 788 {
 789     // Create a printer.
 790     QPrinter printer;
 791
 792     // Set the resolution to be 300 dpi.
 793     printer.setResolution(300);
 794
 795     // Create a print preview dialog.
 796     QPrintPreviewDialog printPreviewDialog(&printer, currentPrivacyWebEngineViewPointer);
 797
 798     // Generate the print preview.
 799     connect(&printPreviewDialog, SIGNAL(paintRequested(QPrinter *)), this, SLOT(printWebpage(QPrinter *)));
 800
 801     // Display the dialog.
 802     printPreviewDialog.exec();
 803 }
 804
 805 void TabWidget::printWebpage(QPrinter *printerPointer) const
 806 {
 807     // Create an event loop.  For some reason, the print preview doesn't produce any output unless it is run inside an event loop.
 808     QEventLoop eventLoop;
 809
 810     // Print the webpage, converting the callback above into a `QWebEngineCallback<bool>`.
 811     // Printing requires that the printer be a pointer, not a reference, or it will crash with much cursing.
 812     currentWebEnginePagePointer->print(printerPointer, [&eventLoop](bool printSuccess)
 813     {
 814         // Instruct the compiler to ignore the unused parameter.
 815         (void) printSuccess;
 816
 817         // Quit the loop.
 818         eventLoop.quit();
 819     });
 820
 821     // Execute the loop.
 822     eventLoop.exec();
 823 }
 824
 825 void TabWidget::refresh() const
 826 {
 827     // Reload the website.
 828     currentPrivacyWebEngineViewPointer->reload();
 829 }
 830
 831 void TabWidget::setTabBarVisible(const bool visible) const
 832 {
 833     // Set the tab bar visibility.
 834     qTabWidgetPointer->tabBar()->setVisible(visible);
 835 }
 836
 837 void TabWidget::showSaveDialog(QWebEngineDownloadItem *webEngineDownloadItemPointer)
 838 {
 839     // Get the download attributes.
 840     QUrl downloadUrl = webEngineDownloadItemPointer->url();
 841     QString mimeTypeString = webEngineDownloadItemPointer->mimeType();
 842     QString suggestedFileName = webEngineDownloadItemPointer->suggestedFileName();
 843     int totalBytes = webEngineDownloadItemPointer->totalBytes();
 844
 845     // Check to see if Privacy Browser is not running KDE or if local storage (cookies) is enabled.
 846     if (!isRunningKde || currentPrivacyWebEngineViewPointer->localStorageEnabled)  // KDE is not running or local storage (cookies) is enabled.  Use WebEngine's downloader.
 847     {
 848         // Instantiate the save dialog.
 849         SaveDialog *saveDialogPointer = new SaveDialog(downloadUrl, mimeTypeString, totalBytes);
 850
 851         // Display the save dialog.
 852         int saveDialogResult = saveDialogPointer->exec();
 853
 854         // Process the save dialog results.
 855         if (saveDialogResult == QDialog::Accepted)  // Save was selected.
 856         {
 857             // Get the download directory.
 858             QString downloadDirectory = Settings::downloadLocation();
 859
 860             // Resolve the system download directory if specified.
 861             if (downloadDirectory == QLatin1String("System Download Directory"))
 862                 downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
 863
 864             // Get a file path from the file picker.
 865             QString saveFilePath = QFileDialog::getSaveFileName(this, i18nc("Save file dialog caption", "Save File"), downloadDirectory + QLatin1Char('/') + suggestedFileName);
 866
 867             // Process the save file path.
 868             if (!saveFilePath.isEmpty())  // The file save path is populated.
 869             {
 870                 // Create a save file path file info.
 871                 QFileInfo saveFilePathFileInfo = QFileInfo(saveFilePath);
 872
 873                 // Get the canonical save path and file name.
 874                 QString absoluteSavePath = saveFilePathFileInfo.absolutePath();
 875                 QString saveFileName = saveFilePathFileInfo.fileName();
 876
 877                 // Set the download directory and file name.
 878                 webEngineDownloadItemPointer->setDownloadDirectory(absoluteSavePath);
 879                 webEngineDownloadItemPointer->setDownloadFileName(saveFileName);
 880
 881                 // Create a file download notification.
 882                 KNotification *fileDownloadNotificationPointer = new KNotification(QLatin1String("FileDownload"));
 883
 884                 // Set the notification title.
 885                 fileDownloadNotificationPointer->setTitle(i18nc("Download notification title", "Download"));
 886
 887                 // Set the notification text.
 888                 fileDownloadNotificationPointer->setText(i18nc("Downloading notification text", "Downloading %1", saveFileName));
 889
 890                 // Set the notification icon.
 891                 fileDownloadNotificationPointer->setIconName(QLatin1String("download"));
 892
 893                 // Set the action list cancel button.
 894                 fileDownloadNotificationPointer->setActions(QStringList({i18nc("Download notification action","Cancel")}));
 895
 896                 // Set the notification to display indefinitely.
 897                 fileDownloadNotificationPointer->setFlags(KNotification::Persistent);
 898
 899                 // Prevent the notification from being autodeleted if it is closed.  Otherwise, the updates to the notification below cause a crash.
 900                 fileDownloadNotificationPointer->setAutoDelete(false);
 901
 902                 // Display the notification.
 903                 fileDownloadNotificationPointer->sendEvent();
 904
 905                 // Handle clicks on the cancel button.
 906                 connect(fileDownloadNotificationPointer, &KNotification::action1Activated, [webEngineDownloadItemPointer, saveFileName] ()
 907                 {
 908                     // Cancel the download.
 909                     webEngineDownloadItemPointer->cancel();
 910
 911                     // Create a file download notification.
 912                     KNotification *canceledDownloadNotificationPointer = new KNotification(QLatin1String("FileDownload"));
 913
 914                     // Set the notification title.
 915                     canceledDownloadNotificationPointer->setTitle(i18nc("Download notification title", "Download"));
 916
 917                     // Set the new text.
 918                     canceledDownloadNotificationPointer->setText(i18nc("Download canceled notification", "%1 download canceled", saveFileName));
 919
 920                     // Set the notification icon.
 921                     canceledDownloadNotificationPointer->setIconName(QLatin1String("download"));
 922
 923                     // Display the notification.
 924                     canceledDownloadNotificationPointer->sendEvent();
 925                 });
 926
 927                 // Update the notification when the download progresses.
 928                 connect(webEngineDownloadItemPointer, &QWebEngineDownloadItem::downloadProgress, [fileDownloadNotificationPointer, saveFileName] (qint64 bytesReceived, qint64 totalBytes)
 929                 {
 930                     // Set the new text.  Total bytes will be 0 if the download size is unknown.
 931                     if (totalBytes > 0)
 932                     {
 933                         // Calculate the download percentage.
 934                         int downloadPercentage = 100 * bytesReceived / totalBytes;
 935
 936                         // Set the file download notification text.
 937                         fileDownloadNotificationPointer->setText(i18nc("Download progress notification text", "%1\% of %2 downloaded (%3 of %4 bytes)", downloadPercentage, saveFileName,
 938                                                                     bytesReceived, totalBytes));
 939                     }
 940                     else
 941                     {
 942                         // Set the file download notification text.
 943                         fileDownloadNotificationPointer->setText(i18nc("Download progress notification text", "%1:  %2 bytes downloaded", saveFileName, bytesReceived));
 944                     }
 945
 946                     // Display the updated notification.
 947                     fileDownloadNotificationPointer->update();
 948                 });
 949
 950                 // Update the notification when the download finishes.  The save file name must be copied into the lambda or a crash occurs.
 951                 connect(webEngineDownloadItemPointer, &QWebEngineDownloadItem::finished, [fileDownloadNotificationPointer, saveFileName, saveFilePath] ()
 952                 {
 953                     // Set the new text.
 954                     fileDownloadNotificationPointer->setText(i18nc("Download finished notification text", "%1 download finished", saveFileName));
 955
 956                     // Set the URL so the file options will be displayed.
 957                     fileDownloadNotificationPointer->setUrls(QList<QUrl> {QUrl(saveFilePath)});
 958
 959                     // Remove the actions from the notification.
 960                     fileDownloadNotificationPointer->setActions(QStringList());
 961
 962                     // Set the notification to disappear after a timeout.
 963                     fileDownloadNotificationPointer->setFlags(KNotification::CloseOnTimeout);
 964
 965                     // Display the updated notification.
 966                     fileDownloadNotificationPointer->update();
 967                 });
 968
 969                 // Start the download.
 970                 webEngineDownloadItemPointer->accept();
 971             }
 972             else  // The file save path is not populated.
 973             {
 974                 // Cancel the download.
 975                 webEngineDownloadItemPointer->cancel();
 976             }
 977         }
 978         else  // Cancel was selected.
 979         {
 980             // Cancel the download.
 981             webEngineDownloadItemPointer->cancel();
 982         }
 983     }
 984     else  // KDE is running and local storage (cookies) is disabled.  Use KDE's native downloader.
 985           // 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.
 986     {
 987         // Instantiate the save dialog.  `true` instructs it to use the native downloader
 988         SaveDialog *saveDialogPointer = new SaveDialog(downloadUrl, mimeTypeString, totalBytes, suggestedFileName, true);
 989
 990         // Connect the save button.
 991         connect(saveDialogPointer, SIGNAL(useNativeKdeDownloader(QUrl &, QString &)), this, SLOT(useNativeKdeDownloader(QUrl &, QString &)));
 992
 993         // Show the dialog.
 994         saveDialogPointer->show();
 995     }
 996 }
 997
 998 void TabWidget::toggleDomStorage() const
 999 {
1000     // Toggle DOM storage.
1001     currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::LocalStorageEnabled, !currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1002
1003     // Update the DOM storage action.
1004     emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1005
1006     // Reload the website.
1007     currentPrivacyWebEngineViewPointer->reload();
1008 }
1009
1010 void TabWidget::toggleFindCaseSensitive(const QString &text)
1011 {
1012     // Toggle find case sensitive.
1013     currentPrivacyWebEngineViewPointer->findCaseSensitive = !currentPrivacyWebEngineViewPointer->findCaseSensitive;
1014
1015     // Set the wiping current find text selection flag.
1016     wipingCurrentFindTextSelection = true;
1017
1018     // Wipe the previous search.  Otherwise currently highlighted words will remain highlighted.
1019     findText(QLatin1String(""));
1020
1021     // Update the find text.
1022     findText(text);
1023 }
1024
1025 void TabWidget::toggleJavaScript() const
1026 {
1027     // Toggle JavaScript.
1028     currentWebEngineSettingsPointer->setAttribute(QWebEngineSettings::JavascriptEnabled, !currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1029
1030     // Update the JavaScript action.
1031     emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1032
1033     // Reload the website.
1034     currentPrivacyWebEngineViewPointer->reload();
1035 }
1036
1037 void TabWidget::toggleLocalStorage()
1038 {
1039     // Toggle local storage.
1040     currentPrivacyWebEngineViewPointer->localStorageEnabled = !currentPrivacyWebEngineViewPointer->localStorageEnabled;
1041
1042     // Update the local storage action.
1043     emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
1044
1045     // Reload the website.
1046     currentPrivacyWebEngineViewPointer->reload();
1047 }
1048
1049 void TabWidget::updateUiFromWebEngineView(const PrivacyWebEngineView *privacyWebEngineViewPointer) const
1050 {
1051     // Only update the UI if the signal was emitted from the current privacy WebEngine.
1052     if (privacyWebEngineViewPointer == currentPrivacyWebEngineViewPointer)
1053     {
1054         // Update the UI.
1055         emit updateDomainSettingsIndicator(currentPrivacyWebEngineViewPointer->domainSettingsName != QLatin1String(""));
1056         emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1057         emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
1058         emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1059         emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), true);
1060         emit updateZoomFactorAction(currentPrivacyWebEngineViewPointer->zoomFactor());
1061     }
1062 }
1063
1064 void TabWidget::updateUiWithTabSettings()
1065 {
1066     // Update the current WebEngine pointers.
1067     currentPrivacyWebEngineViewPointer = qobject_cast<PrivacyWebEngineView *>(qTabWidgetPointer->currentWidget());
1068     currentWebEngineSettingsPointer = currentPrivacyWebEngineViewPointer->settings();
1069     currentWebEnginePagePointer = currentPrivacyWebEngineViewPointer->page();
1070     currentWebEngineProfilePointer = currentWebEnginePagePointer->profile();
1071     currentWebEngineHistoryPointer = currentWebEnginePagePointer->history();
1072     currentWebEngineCookieStorePointer = currentWebEngineProfilePointer->cookieStore();
1073
1074     // Clear the URL line edit focus.
1075     emit clearUrlLineEditFocus();
1076
1077     // Update the actions.
1078     emit updateBackAction(currentWebEngineHistoryPointer->canGoBack());
1079     emit updateCookiesAction(currentPrivacyWebEngineViewPointer->cookieListPointer->size());
1080     emit updateDomStorageAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::LocalStorageEnabled));
1081     emit updateForwardAction(currentWebEngineHistoryPointer->canGoForward());
1082     emit updateJavaScriptAction(currentWebEngineSettingsPointer->testAttribute(QWebEngineSettings::JavascriptEnabled));
1083     emit updateLocalStorageAction(currentPrivacyWebEngineViewPointer->localStorageEnabled);
1084     emit updateUserAgentActions(currentWebEngineProfilePointer->httpUserAgent(), true);
1085     emit updateZoomFactorAction(currentPrivacyWebEngineViewPointer->zoomFactor());
1086
1087     // Update the URL.
1088     emit updateWindowTitle(currentPrivacyWebEngineViewPointer->title());
1089     emit updateDomainSettingsIndicator(currentPrivacyWebEngineViewPointer->domainSettingsName != QLatin1String(""));
1090     emit updateUrlLineEdit(currentPrivacyWebEngineViewPointer->url());
1091
1092     // Update the find text.
1093     emit updateFindText(currentPrivacyWebEngineViewPointer->findString, currentPrivacyWebEngineViewPointer->findCaseSensitive);
1094     emit updateFindTextResults(currentPrivacyWebEngineViewPointer->findTextResult);
1095
1096     // Update the progress bar.
1097     if (currentPrivacyWebEngineViewPointer->loadProgressInt >= 0)
1098         emit showProgressBar(currentPrivacyWebEngineViewPointer->loadProgressInt);
1099     else
1100         emit hideProgressBar();
1101 }
1102
1103 void TabWidget::useNativeKdeDownloader(QUrl &downloadUrl, QString &suggestedFileName)
1104 {
1105     // Get the download directory.
1106     QString downloadDirectory = Settings::downloadLocation();
1107
1108     // Resolve the system download directory if specified.
1109     if (downloadDirectory == QLatin1String("System Download Directory"))
1110         downloadDirectory = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
1111
1112     // Create a save file dialog.
1113     QFileDialog *saveFileDialogPointer = new QFileDialog(this, i18nc("Save file dialog caption", "Save File"), downloadDirectory);
1114
1115     // Tell the dialog to use a save button.
1116     saveFileDialogPointer->setAcceptMode(QFileDialog::AcceptSave);
1117
1118     // Populate the file name from the download item pointer.
1119     saveFileDialogPointer->selectFile(suggestedFileName);
1120
1121     // Prevent interaction with the parent window while the dialog is open.
1122     saveFileDialogPointer->setWindowModality(Qt::WindowModal);
1123
1124     // Process the saving of the file.  The save file dialog pointer must be captured directly instead of by reference or nasty crashes occur.
1125     auto saveFile = [saveFileDialogPointer, downloadUrl] ()
1126     {
1127         // Get the save location.  The dialog box should only allow the selecting of one file location.
1128         QUrl saveLocation = saveFileDialogPointer->selectedUrls().value(0);
1129
1130         // Create a file copy job.  `-1` creates the file with default permissions.
1131         KIO::FileCopyJob *fileCopyJobPointer = KIO::file_copy(downloadUrl, saveLocation, -1, KIO::Overwrite);
1132
1133         // Set the download job to display any warning and error messages.
1134         fileCopyJobPointer->uiDelegate()->setAutoWarningHandlingEnabled(true);
1135         fileCopyJobPointer->uiDelegate()->setAutoErrorHandlingEnabled(true);
1136
1137         // Start the download.
1138         fileCopyJobPointer->start();
1139     };
1140
1141     // Handle clicks on the save button.
1142     connect(saveFileDialogPointer, &QDialog::accepted, this, saveFile);
1143
1144     // Show the dialog.
1145     saveFileDialogPointer->show();
1146 }