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