src/windows/BrowserWindow.cpp

   1 /*
   2  * Copyright © 2022 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 "BrowserWindow.h"
  22 #include "Settings.h"
  23 #include "ui_SettingsPrivacy.h"
  24 #include "ui_SettingsGeneral.h"
  25 #include "dialogs/DomainSettingsDialog.h"
  26 #include "helpers/SearchEngineHelper.h"
  27 #include "helpers/UserAgentHelper.h"
  28
  29 // KDE Frameworks headers.
  30 #include <KActionCollection>
  31 #include <KToolBar>
  32
  33 // Qt toolkit headers.
  34 #include <QInputDialog>
  35 #include <QStatusBar>
  36
  37 BrowserWindow::BrowserWindow() : KXmlGuiWindow()
  38 {
  39     // Instantiate the main view pointer.
  40     browserViewPointer = new BrowserView(this);
  41
  42     // Set the main view as the central widget.
  43     setCentralWidget(browserViewPointer);
  44
  45     // Get a handle for the action collection.
  46     KActionCollection *actionCollectionPointer = this->actionCollection();
  47
  48     // Add the standard actions.
  49     QAction *backActionPointer = KStandardAction::back(this, SLOT(back()), actionCollectionPointer);
  50     QAction *forwardActionPointer = KStandardAction::forward(this, SLOT(forward()), actionCollectionPointer);
  51     KStandardAction::home(this, SLOT(home()), actionCollectionPointer);
  52     KStandardAction::openNew(this, SLOT(fileNew()), actionCollectionPointer);
  53     KStandardAction::quit(qApp, SLOT(closeAllWindows()), actionCollectionPointer);
  54     KStandardAction::preferences(this, SLOT(settingsConfigure()), actionCollectionPointer);
  55     KStandardAction::redisplay(this, SLOT(refresh()), actionCollectionPointer);
  56
  57     // Add the custom actions.
  58     userAgentPrivacyBrowserActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_privacy_browser"));
  59     userAgentFirefoxLinuxActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_firefox_linux"));
  60     userAgentChromiumLinuxActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_chromium_linux"));
  61     userAgentFirefoxWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_firefox_windows"));
  62     userAgentChromeWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_chrome_windows"));
  63     userAgentEdgeWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_edge_windows"));
  64     userAgentSafariMacosActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_safari_macos"));
  65     userAgentCustomActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_custom"));
  66     zoomFactorActionPointer = actionCollectionPointer->addAction(QStringLiteral("zoom_factor"));
  67     searchEngineMojeekActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_mojeek"));
  68     searchEngineMonoclesActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_monocles"));
  69     searchEngineMetagerActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_metager"));
  70     searchEngineGoogleActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_google"));
  71     searchEngineBingActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_bing"));
  72     searchEngineYahooActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_yahoo"));
  73     searchEngineCustomActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_custom"));
  74     javaScriptActionPointer = actionCollectionPointer->addAction(QStringLiteral("javascript"));
  75     domainSettingsActionPointer = actionCollectionPointer->addAction(QStringLiteral("domain_settings"));
  76
  77     // Create the action groups
  78     QActionGroup *userAgentActionGroupPointer = new QActionGroup(this);
  79     QActionGroup *searchEngineActionGroupPointer = new QActionGroup(this);
  80
  81     // Add the actions to the groups.
  82     userAgentActionGroupPointer->addAction(userAgentPrivacyBrowserActionPointer);
  83     userAgentActionGroupPointer->addAction(userAgentFirefoxLinuxActionPointer);
  84     userAgentActionGroupPointer->addAction(userAgentChromiumLinuxActionPointer);
  85     userAgentActionGroupPointer->addAction(userAgentFirefoxWindowsActionPointer);
  86     userAgentActionGroupPointer->addAction(userAgentChromeWindowsActionPointer);
  87     userAgentActionGroupPointer->addAction(userAgentEdgeWindowsActionPointer);
  88     userAgentActionGroupPointer->addAction(userAgentSafariMacosActionPointer);
  89     userAgentActionGroupPointer->addAction(userAgentCustomActionPointer);
  90     searchEngineActionGroupPointer->addAction(searchEngineMojeekActionPointer);
  91     searchEngineActionGroupPointer->addAction(searchEngineMonoclesActionPointer);
  92     searchEngineActionGroupPointer->addAction(searchEngineMetagerActionPointer);
  93     searchEngineActionGroupPointer->addAction(searchEngineGoogleActionPointer);
  94     searchEngineActionGroupPointer->addAction(searchEngineBingActionPointer);
  95     searchEngineActionGroupPointer->addAction(searchEngineYahooActionPointer);
  96     searchEngineActionGroupPointer->addAction(searchEngineCustomActionPointer);
  97
  98     // Set some actions to be checkable.
  99     userAgentPrivacyBrowserActionPointer->setCheckable(true);
 100     userAgentFirefoxLinuxActionPointer->setCheckable(true);
 101     userAgentChromiumLinuxActionPointer->setCheckable(true);
 102     userAgentFirefoxWindowsActionPointer->setCheckable(true);
 103     userAgentChromeWindowsActionPointer->setCheckable(true);
 104     userAgentEdgeWindowsActionPointer->setCheckable(true);
 105     userAgentSafariMacosActionPointer->setCheckable(true);
 106     userAgentCustomActionPointer->setCheckable(true);
 107     searchEngineMojeekActionPointer->setCheckable(true);
 108     searchEngineMonoclesActionPointer->setCheckable(true);
 109     searchEngineMetagerActionPointer->setCheckable(true);
 110     searchEngineGoogleActionPointer->setCheckable(true);
 111     searchEngineBingActionPointer->setCheckable(true);
 112     searchEngineYahooActionPointer->setCheckable(true);
 113     searchEngineCustomActionPointer->setCheckable(true);
 114
 115     // Set the non-mutable action text.
 116     userAgentPrivacyBrowserActionPointer->setText(UserAgentHelper::PRIVACY_BROWSER_TRANSLATED);
 117     userAgentFirefoxLinuxActionPointer->setText(UserAgentHelper::FIREFOX_LINUX_TRANSLATED);
 118     userAgentChromiumLinuxActionPointer->setText(UserAgentHelper::CHROMIUM_LINUX_TRANSLATED);
 119     userAgentFirefoxWindowsActionPointer->setText(UserAgentHelper::FIREFOX_WINDOWS_TRANSLATED);
 120     userAgentChromeWindowsActionPointer->setText(UserAgentHelper::CHROME_WINDOWS_TRANSLATED);
 121     userAgentEdgeWindowsActionPointer->setText(UserAgentHelper::EDGE_WINDOWS_TRANSLATED);
 122     userAgentSafariMacosActionPointer->setText(UserAgentHelper::SAFARI_MACOS_TRANSLATED);
 123     searchEngineMojeekActionPointer->setText(i18nc("Search engine", "Mojeek"));
 124     searchEngineMonoclesActionPointer->setText(i18nc("Search engine", "Monocles"));
 125     searchEngineMetagerActionPointer->setText(i18nc("Search engine", "MetaGer"));
 126     searchEngineGoogleActionPointer->setText(i18nc("Search engine", "Google"));
 127     searchEngineBingActionPointer->setText(i18nc("Search engine", "Bing"));
 128     searchEngineYahooActionPointer->setText(i18nc("Search engine", "Yahoo"));
 129     javaScriptActionPointer->setText(i18nc("JavaScript button", "JavaScript"));
 130     domainSettingsActionPointer->setText(i18nc("Domain Settings button", "Domain Settings"));
 131
 132     // Set the action icons.
 133     userAgentPrivacyBrowserActionPointer->setIcon(QIcon(":/icons/privacy-mode"));
 134     userAgentFirefoxLinuxActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("firefox-esr")));
 135     userAgentChromiumLinuxActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("chromium")));
 136     userAgentFirefoxWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("firefox-esr")));
 137     userAgentChromeWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("chromium")));
 138     userAgentEdgeWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 139     userAgentSafariMacosActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 140     userAgentCustomActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 141     searchEngineMojeekActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 142     searchEngineMonoclesActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 143     searchEngineMetagerActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 144     searchEngineGoogleActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("im-google")));
 145     searchEngineBingActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 146     searchEngineYahooActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("im-yahoo")));
 147     searchEngineCustomActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 148     zoomFactorActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("zoom")));
 149     domainSettingsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("network-server-symbolic")));
 150
 151     // Update the on-the-fly menus.
 152     connect(browserViewPointer, SIGNAL(userAgentUpdated(QString)), this, SLOT(updateOnTheFlyUserAgent(QString)));
 153     connect(browserViewPointer, SIGNAL(zoomFactorUpdated(double)), this, SLOT(updateOnTheFlyZoomFactor(double)));
 154     connect(browserViewPointer, SIGNAL(searchEngineUpdated(QString)), this, SLOT(updateOnTheFlySearchEngine(QString)));
 155
 156     // Apply the on-the-fly settings when selected.
 157     connect(userAgentActionGroupPointer, SIGNAL(triggered(QAction*)), browserViewPointer, SLOT(applyOnTheFlyUserAgent(QAction*)));
 158     connect(searchEngineActionGroupPointer, SIGNAL(triggered(QAction*)), browserViewPointer, SLOT(applyOnTheFlySearchEngine(QAction*)));
 159
 160     // Display dialogs.
 161     connect(zoomFactorActionPointer, SIGNAL(triggered()), this, SLOT(getZoomFactorFromUser()));
 162
 163     // Connect the URL toolbar actions.
 164     connect(javaScriptActionPointer, SIGNAL(triggered()), this, SLOT(toggleJavaScript()));
 165     connect(domainSettingsActionPointer, SIGNAL(triggered()), this, SLOT(openDomainSettings()));
 166
 167     // Update the URL toolbar actions.
 168     connect(browserViewPointer, SIGNAL(updateBackAction(bool)), backActionPointer, SLOT(setEnabled(bool)));
 169     connect(browserViewPointer, SIGNAL(updateForwardAction(bool)), forwardActionPointer, SLOT(setEnabled(bool)));
 170     connect(browserViewPointer, SIGNAL(updateJavaScriptAction(bool)), this, SLOT(updateJavaScriptAction(bool)));
 171
 172     // Setup the GUI based on the browser_ui.rc file.
 173     setupGUI(StandardWindowOption::Default, ("browser_ui.rc"));
 174
 175     // Get a handle for the URL toolbar.
 176     KToolBar *urlToolBarPointer = toolBar(QStringLiteral("url_toolbar"));
 177
 178     // Create a URL line edit.
 179     urlLineEditPointer = new KLineEdit();
 180
 181     // Populate the URL toolbar.
 182     urlToolBarPointer->addWidget(urlLineEditPointer);
 183     urlToolBarPointer->addAction(javaScriptActionPointer);
 184     urlToolBarPointer->addAction(domainSettingsActionPointer);
 185
 186     // Load a new URL from the URL line edit.
 187     connect(urlLineEditPointer, SIGNAL(returnKeyPressed(const QString)), this, SLOT(loadUrlFromLineEdit(const QString)));
 188
 189     // Update the URL line edit on page loads.
 190     connect(browserViewPointer, SIGNAL(updateUrlLineEdit(QString)), this, SLOT(updateUrlLineEdit(QString)));
 191
 192     // Get a handle for the status bar.
 193     QStatusBar *statusBarPointer = statusBar();
 194
 195     // Update the status bar with the URL when a link is hovered.
 196     connect(browserViewPointer, SIGNAL(linkHovered(QString)), statusBarPointer, SLOT(showMessage(QString)));
 197
 198     // Get the URL line edit palettes.
 199     noDomainSettingsPalette = urlLineEditPointer->palette();
 200     domainSettingsPalette = urlLineEditPointer->palette();
 201
 202     // Modify the domain settings palette.
 203     domainSettingsPalette.setColor(QPalette::Base, QColor("#C8E6C9"));
 204
 205     // Update the applied palette.
 206     connect(browserViewPointer, SIGNAL(updateDomainSettingsIndicator(bool)), this, SLOT(updateDomainSettingsIndicator(bool)));
 207
 208     // Load the initial website.
 209     browserViewPointer->loadInitialWebsite();
 210 }
 211
 212 void BrowserWindow::back() const
 213 {
 214     // Remove the focus from the URL line edit.
 215     urlLineEditPointer->clearFocus();
 216
 217     // Go back.
 218     browserViewPointer->back();
 219 }
 220
 221 void BrowserWindow::fileNew() const
 222 {
 223     // Display a new instance of Privacy Browser.
 224     (new BrowserWindow)->show();
 225 }
 226
 227 void BrowserWindow::forward() const
 228 {
 229     // Remove the focus from the URL line edit.
 230     urlLineEditPointer->clearFocus();
 231
 232     // Go forward.
 233     browserViewPointer->forward();
 234 }
 235
 236 void BrowserWindow::getZoomFactorFromUser()
 237 {
 238     // Create an OK flag.
 239     bool okClicked;
 240
 241     // Display a dialog to get the new zoom factor from the user.  Format the double to display two decimals and have a 0.25 step.
 242     double newZoomFactor = QInputDialog::getDouble(this, i18nc("The on-the-fly zoom factor dialog title", "On-The-Fly Zoom Factor"),
 243                                                    i18nc("The instruction text of the on-the-fly zoom factor dialog", "Enter a zoom factor between 0.25 and 5.00"),
 244                                                    currentZoomFactor, .025, 5.00, 2, &okClicked, Qt::WindowFlags(), 0.25);
 245
 246     // Update the zoom factor if the user clicked OK.
 247     if (okClicked)
 248     {
 249         // Update the current zoom factor.
 250         currentZoomFactor = newZoomFactor;
 251
 252         // Set the new zoom factor.
 253         browserViewPointer->applyOnTheFlyZoomFactor(newZoomFactor);
 254
 255         // Update the on-the-fly action text.
 256         updateOnTheFlyZoomFactor(newZoomFactor);
 257     }
 258 }
 259
 260 void BrowserWindow::home() const
 261 {
 262     // Remove the focus from the URL line edit.
 263     urlLineEditPointer->clearFocus();
 264
 265     // Go home.
 266     browserViewPointer->home();
 267 }
 268
 269 void BrowserWindow::loadUrlFromLineEdit(const QString &url) const
 270 {
 271     // Remove the focus from the URL line edit.
 272     urlLineEditPointer->clearFocus();
 273
 274     // Load the URL.
 275     browserViewPointer->loadUrlFromLineEdit(url);
 276 }
 277
 278 void BrowserWindow::openDomainSettings() const
 279 {
 280     // Remove the focus from the URL line edit.
 281     urlLineEditPointer->clearFocus();
 282
 283     // Instantiate the domain settings window.
 284     DomainSettingsDialog *domainSettingsDialogPointer = new DomainSettingsDialog();
 285
 286     // Set the dialog window title.
 287     domainSettingsDialogPointer->setWindowTitle(i18nc("The domain settings dialog title", "Domain Settings"));
 288
 289     // Set the modality.
 290     domainSettingsDialogPointer->setWindowModality(Qt::WindowModality::WindowModal);;
 291
 292     // Show the dialog.
 293     domainSettingsDialogPointer->show();
 294
 295     // Reload the tabs when domain settings are updated.
 296     connect(domainSettingsDialogPointer, SIGNAL(domainSettingsUpdated()), browserViewPointer, SLOT(applyDomainSettingsAndReload()));
 297 }
 298
 299 void BrowserWindow::refresh() const
 300 {
 301     // Remove the focus from the URL line edit.
 302     urlLineEditPointer->clearFocus();
 303
 304     // Refresh the web page.
 305     browserViewPointer->refresh();
 306 }
 307
 308 void BrowserWindow::toggleJavaScript() const
 309 {
 310     // Remove the focus from the URL line edit.
 311     urlLineEditPointer->clearFocus();
 312
 313     // Toggle JavaScript.
 314     browserViewPointer->toggleJavaScript();
 315 }
 316
 317 QSize BrowserWindow::sizeHint() const
 318 {
 319     // Return the default window size.
 320     return QSize(1500, 1200);
 321 }
 322
 323 void BrowserWindow::settingsConfigure()
 324 {
 325     // Check to make sure the dialog box isn't already displayed.
 326     if (KConfigDialog::exists(QStringLiteral("settings")))
 327     {
 328         // Show the existing config dialog if it is hidden.
 329         configDialogPointer->show();
 330
 331         // Raise the existing config dialog if it is below other windows.
 332         configDialogPointer->raise();
 333
 334         // Restore the existing config dialog if it has been minimized.
 335         if (configDialogPointer->isMinimized()) {
 336             configDialogPointer->showNormal();
 337         }
 338
 339         // Activate the existing config dialog, which brings its virtual desktop into focus.
 340         configDialogPointer->activateWindow();
 341     }
 342     else
 343     {
 344         // Create the settings widgets.
 345         QWidget *privacySettingsWidgetPointer = new QWidget;
 346         QWidget *generalSettingsWidgetPointer = new QWidget;
 347
 348         // Instantiate the settings UI.
 349         Ui::PrivacySettings privacySettingsUi;
 350         Ui::GeneralSettings generalSettingsUi;
 351
 352         // Setup the UI to display the settings widgets.
 353         privacySettingsUi.setupUi(privacySettingsWidgetPointer);
 354         generalSettingsUi.setupUi(generalSettingsWidgetPointer);
 355
 356         // Get handles for the widgets.
 357         QComboBox *userAgentComboBoxPointer = privacySettingsUi.kcfg_userAgent;
 358         userAgentLabelPointer = privacySettingsUi.userAgentLabel;
 359         QComboBox *searchEngineComboBoxPointer = generalSettingsUi.kcfg_searchEngine;
 360         searchEngineLabelPointer = generalSettingsUi.searchEngineLabel;
 361
 362         // Populate the combo box labels.
 363         updateUserAgentLabel(userAgentComboBoxPointer->currentText());
 364         updateSearchEngineLabel(searchEngineComboBoxPointer->currentText());
 365
 366         // Update the labels when the combo boxes change.
 367         connect(userAgentComboBoxPointer, SIGNAL(currentTextChanged(const QString)), this, SLOT(updateUserAgentLabel(const QString)));
 368         connect(searchEngineComboBoxPointer, SIGNAL(currentTextChanged(const QString)), this, SLOT(updateSearchEngineLabel(const QString)));
 369
 370         // Instantiate a settings config dialog from the settings.kcfg file.
 371         configDialogPointer = new KConfigDialog(this, QStringLiteral("settings"), Settings::self());
 372
 373         // Add the settings widgets as config dialog pages.
 374         configDialogPointer->addPage(privacySettingsWidgetPointer, i18nc("@title:tab", "Privacy"), QStringLiteral("privacy-browser"));
 375         configDialogPointer->addPage(generalSettingsWidgetPointer, i18nc("@title:tab", "General"), QStringLiteral("breeze-settings"));
 376
 377         // Delete the config dialog when it is closed.
 378         configDialogPointer->setAttribute(Qt::WA_DeleteOnClose);
 379
 380         // Make it so.
 381         configDialogPointer->show();
 382
 383         // TODO.  KConfigDialog does not respect expanding size policies.  <https://redmine.stoutner.com/issues/823>
 384         //configDialogPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 385         //privacySettingsWidgetPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 386         //generalSettingsWidgetPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 387         //configDialogPointer->adjustSize();
 388
 389         // Expand the config dialog.
 390         configDialogPointer->resize(1000, 500);
 391
 392         // Apply the settings when they are updated.
 393         connect(configDialogPointer, SIGNAL(settingsChanged(QString)), browserViewPointer, SLOT(applyApplicationSettings()));
 394         connect(configDialogPointer, SIGNAL(settingsChanged(QString)), browserViewPointer, SLOT(applyDomainSettingsAndReload()));
 395     }
 396 }
 397
 398 void BrowserWindow::updateDomainSettingsIndicator(const bool &status) const
 399 {
 400     // Set the domain palette according to the status.
 401     if (status) urlLineEditPointer->setPalette(domainSettingsPalette);
 402     else urlLineEditPointer->setPalette(noDomainSettingsPalette);
 403 }
 404
 405 void BrowserWindow::updateJavaScriptAction(const bool &isEnabled) const
 406 {
 407     // Set the icon according to the status.
 408     if (isEnabled) javaScriptActionPointer->setIcon(QIcon(":/icons/javascript-warning"));
 409     else javaScriptActionPointer->setIcon(QIcon(":/icons/privacy-mode"));
 410 }
 411
 412 void BrowserWindow::updateOnTheFlySearchEngine(const QString &searchEngine) const
 413 {
 414     // Initialize the custom search engine flag.
 415     bool customSearchEngine = false;
 416
 417     if (searchEngine == "Mojeek")  // Mojeek.
 418     {
 419         searchEngineMojeekActionPointer->setChecked(true);
 420     }
 421     else if (searchEngine == "Monocles")  // Monocles.
 422     {
 423         searchEngineMonoclesActionPointer->setChecked(true);
 424     }
 425     else if (searchEngine == "MetaGer")  // MetaGer.
 426     {
 427         searchEngineMetagerActionPointer->setChecked(true);
 428     }
 429     else if (searchEngine == "Google")  // Google.
 430     {
 431         searchEngineGoogleActionPointer->setChecked(true);
 432     }
 433     else if (searchEngine == "Bing")  // Bing.
 434     {
 435         searchEngineBingActionPointer->setChecked(true);
 436     }
 437     else if (searchEngine == "Yahoo")  // Yahoo.
 438     {
 439         searchEngineYahooActionPointer->setChecked(true);
 440     }
 441     else  // Custom search engine.
 442     {
 443         // Check the user agent.
 444         searchEngineCustomActionPointer->setChecked(true);
 445
 446         // Set the custom search engine flag.
 447         customSearchEngine = true;
 448     }
 449
 450     // Format the custom search engine.
 451     if (customSearchEngine)
 452     {
 453         // Enable the custom search engine.
 454         searchEngineCustomActionPointer->setEnabled(true);
 455
 456         // Set the custom search engine text.
 457         searchEngineCustomActionPointer->setText(searchEngine);
 458     }
 459     else
 460     {
 461         // Disable the custom search engine.
 462         searchEngineCustomActionPointer->setEnabled(false);
 463
 464         // Reset the custom search engine text.
 465         searchEngineCustomActionPointer->setText(i18nc("@action", "Custom"));
 466     }
 467 }
 468
 469 void BrowserWindow::updateOnTheFlyUserAgent(const QString &userAgent) const
 470 {
 471     // Initialize the custom user agent flag.
 472     bool customUserAgent = false;
 473
 474     // Check the indicated on-the-fly user agent.
 475     if (userAgent == UserAgentHelper::PRIVACY_BROWSER_USER_AGENT) userAgentPrivacyBrowserActionPointer->setChecked(true);  // Privacy Browser.
 476     else if (userAgent == UserAgentHelper::FIREFOX_LINUX_USER_AGENT) userAgentFirefoxLinuxActionPointer->setChecked(true);  // Firefox Linux.
 477     else if (userAgent == UserAgentHelper::CHROMIUM_LINUX_USER_AGENT) userAgentChromiumLinuxActionPointer->setChecked(true);  // Chromium Linux.
 478     else if (userAgent == UserAgentHelper::FIREFOX_WINDOWS_USER_AGENT) userAgentFirefoxWindowsActionPointer->setChecked(true);  // Firefox Windows.
 479     else if (userAgent == UserAgentHelper::CHROME_WINDOWS_USER_AGENT) userAgentChromeWindowsActionPointer->setChecked(true);  // Chrome Windows.
 480     else if (userAgent == UserAgentHelper::EDGE_WINDOWS_USER_AGENT) userAgentEdgeWindowsActionPointer->setChecked(true);  // Edge Windows.
 481     else if (userAgent == UserAgentHelper::SAFARI_MACOS_USER_AGENT) userAgentSafariMacosActionPointer->setChecked(true);  // Safara macOS.
 482     else  // Custom user agent.
 483     {
 484         // Check the user agent.
 485         userAgentCustomActionPointer->setChecked(true);
 486
 487         // Set the custom user agent flag.
 488         customUserAgent = true;
 489     }
 490
 491
 492     // Format the custom user agent.
 493     if (customUserAgent)
 494     {
 495         // Enable the custom user agent.
 496         userAgentCustomActionPointer->setEnabled(true);
 497
 498         // Set the custom user agent text.
 499         userAgentCustomActionPointer->setText(userAgent);
 500     }
 501     else
 502     {
 503         // Disable the custom user agent.
 504         userAgentCustomActionPointer->setEnabled(false);
 505
 506         // Reset the custom user agent text.
 507         userAgentCustomActionPointer->setText(i18nc("@action", "Custom"));
 508     }
 509 }
 510
 511 void BrowserWindow::updateOnTheFlyZoomFactor(const double &zoomFactor)
 512 {
 513     // Set the current zoom factor.
 514     currentZoomFactor = Settings::zoomFactor();
 515
 516     // Update the zoom factor action text, formatting the double with 2 decimal places.
 517     zoomFactorActionPointer->setText(ki18nc("@action", "Zoom Factor - %1").subs(zoomFactor, 0, '0', 2).toString());
 518 }
 519
 520 void BrowserWindow::updateSearchEngineLabel(const QString &searchEngineString) const
 521 {
 522     // Update the search engine label.
 523     searchEngineLabelPointer->setText(SearchEngineHelper::getSearchUrl(searchEngineString));
 524 }
 525
 526 void BrowserWindow::updateUrlLineEdit(const QString &newUrl) const
 527 {
 528     // Update the URL line edit if it does not have focus.
 529     if (!urlLineEditPointer->hasFocus())
 530     {
 531         // Update the URL line edit.
 532         urlLineEditPointer->setText(newUrl);
 533     }
 534 }
 535
 536 void BrowserWindow::updateUserAgentLabel(const QString &userAgentDatabaseName) const
 537 {
 538     // Update the user agent label.
 539     userAgentLabelPointer->setText(UserAgentHelper::getUserAgentFromDatabaseName(userAgentDatabaseName));
 540 }