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/CookiesDialog.h"
  26 #include "dialogs/DomainSettingsDialog.h"
  27 #include "helpers/SearchEngineHelper.h"
  28 #include "helpers/UserAgentHelper.h"
  29
  30 // KDE Frameworks headers.
  31 #include <KActionCollection>
  32 #include <KToolBar>
  33
  34 // Qt toolkit headers.
  35 #include <QInputDialog>
  36 #include <QNetworkCookie>
  37 #include <QStatusBar>
  38
  39 BrowserWindow::BrowserWindow() : KXmlGuiWindow()
  40 {
  41     // Instantiate the main view pointer.
  42     browserViewPointer = new BrowserView(this);
  43
  44     // Set the main view as the central widget.
  45     setCentralWidget(browserViewPointer);
  46
  47     // Get a handle for the action collection.
  48     KActionCollection *actionCollectionPointer = this->actionCollection();
  49
  50     // Add the standard actions.
  51     QAction *backActionPointer = KStandardAction::back(this, SLOT(back()), actionCollectionPointer);
  52     QAction *forwardActionPointer = KStandardAction::forward(this, SLOT(forward()), actionCollectionPointer);
  53     KStandardAction::home(this, SLOT(home()), actionCollectionPointer);
  54     KStandardAction::openNew(this, SLOT(fileNew()), actionCollectionPointer);
  55     KStandardAction::quit(qApp, SLOT(closeAllWindows()), actionCollectionPointer);
  56     KStandardAction::preferences(this, SLOT(settingsConfigure()), actionCollectionPointer);
  57     KStandardAction::redisplay(this, SLOT(refresh()), actionCollectionPointer);
  58
  59     // Add the custom actions.
  60     userAgentPrivacyBrowserActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_privacy_browser"));
  61     userAgentWebEngineDefaultActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_webengine_default"));
  62     userAgentFirefoxLinuxActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_firefox_linux"));
  63     userAgentChromiumLinuxActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_chromium_linux"));
  64     userAgentFirefoxWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_firefox_windows"));
  65     userAgentChromeWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_chrome_windows"));
  66     userAgentEdgeWindowsActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_edge_windows"));
  67     userAgentSafariMacosActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_safari_macos"));
  68     userAgentCustomActionPointer = actionCollectionPointer->addAction(QStringLiteral("user_agent_custom"));
  69     zoomFactorActionPointer = actionCollectionPointer->addAction(QStringLiteral("zoom_factor"));
  70     searchEngineMojeekActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_mojeek"));
  71     searchEngineMonoclesActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_monocles"));
  72     searchEngineMetagerActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_metager"));
  73     searchEngineGoogleActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_google"));
  74     searchEngineBingActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_bing"));
  75     searchEngineYahooActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_yahoo"));
  76     searchEngineCustomActionPointer = actionCollectionPointer->addAction(QStringLiteral("search_engine_custom"));
  77     QAction *domainSettingsActionPointer = actionCollectionPointer->addAction(QStringLiteral("domain_settings"));
  78     QAction *cookiesActionPointer = actionCollectionPointer->addAction(QStringLiteral("cookies"));
  79     javaScriptActionPointer = actionCollectionPointer->addAction(QStringLiteral("javascript"));
  80     localStorageActionPointer = actionCollectionPointer->addAction(QStringLiteral("local_storage"));
  81
  82     // Create the action groups
  83     QActionGroup *userAgentActionGroupPointer = new QActionGroup(this);
  84     QActionGroup *searchEngineActionGroupPointer = new QActionGroup(this);
  85
  86     // Add the actions to the groups.
  87     userAgentActionGroupPointer->addAction(userAgentPrivacyBrowserActionPointer);
  88     userAgentActionGroupPointer->addAction(userAgentWebEngineDefaultActionPointer);
  89     userAgentActionGroupPointer->addAction(userAgentFirefoxLinuxActionPointer);
  90     userAgentActionGroupPointer->addAction(userAgentChromiumLinuxActionPointer);
  91     userAgentActionGroupPointer->addAction(userAgentFirefoxWindowsActionPointer);
  92     userAgentActionGroupPointer->addAction(userAgentChromeWindowsActionPointer);
  93     userAgentActionGroupPointer->addAction(userAgentEdgeWindowsActionPointer);
  94     userAgentActionGroupPointer->addAction(userAgentSafariMacosActionPointer);
  95     userAgentActionGroupPointer->addAction(userAgentCustomActionPointer);
  96     searchEngineActionGroupPointer->addAction(searchEngineMojeekActionPointer);
  97     searchEngineActionGroupPointer->addAction(searchEngineMonoclesActionPointer);
  98     searchEngineActionGroupPointer->addAction(searchEngineMetagerActionPointer);
  99     searchEngineActionGroupPointer->addAction(searchEngineGoogleActionPointer);
 100     searchEngineActionGroupPointer->addAction(searchEngineBingActionPointer);
 101     searchEngineActionGroupPointer->addAction(searchEngineYahooActionPointer);
 102     searchEngineActionGroupPointer->addAction(searchEngineCustomActionPointer);
 103
 104     // Set some actions to be checkable.
 105     userAgentPrivacyBrowserActionPointer->setCheckable(true);
 106     userAgentWebEngineDefaultActionPointer->setCheckable(true);
 107     userAgentFirefoxLinuxActionPointer->setCheckable(true);
 108     userAgentChromiumLinuxActionPointer->setCheckable(true);
 109     userAgentFirefoxWindowsActionPointer->setCheckable(true);
 110     userAgentChromeWindowsActionPointer->setCheckable(true);
 111     userAgentEdgeWindowsActionPointer->setCheckable(true);
 112     userAgentSafariMacosActionPointer->setCheckable(true);
 113     userAgentCustomActionPointer->setCheckable(true);
 114     searchEngineMojeekActionPointer->setCheckable(true);
 115     searchEngineMonoclesActionPointer->setCheckable(true);
 116     searchEngineMetagerActionPointer->setCheckable(true);
 117     searchEngineGoogleActionPointer->setCheckable(true);
 118     searchEngineBingActionPointer->setCheckable(true);
 119     searchEngineYahooActionPointer->setCheckable(true);
 120     searchEngineCustomActionPointer->setCheckable(true);
 121
 122     // Set the non-mutable action text.
 123     userAgentPrivacyBrowserActionPointer->setText(UserAgentHelper::PRIVACY_BROWSER_TRANSLATED);
 124     userAgentWebEngineDefaultActionPointer->setText(UserAgentHelper::WEB_ENGINE_DEFAULT_TRANSLATED);
 125     userAgentFirefoxLinuxActionPointer->setText(UserAgentHelper::FIREFOX_LINUX_TRANSLATED);
 126     userAgentChromiumLinuxActionPointer->setText(UserAgentHelper::CHROMIUM_LINUX_TRANSLATED);
 127     userAgentFirefoxWindowsActionPointer->setText(UserAgentHelper::FIREFOX_WINDOWS_TRANSLATED);
 128     userAgentChromeWindowsActionPointer->setText(UserAgentHelper::CHROME_WINDOWS_TRANSLATED);
 129     userAgentEdgeWindowsActionPointer->setText(UserAgentHelper::EDGE_WINDOWS_TRANSLATED);
 130     userAgentSafariMacosActionPointer->setText(UserAgentHelper::SAFARI_MACOS_TRANSLATED);
 131     searchEngineMojeekActionPointer->setText(i18nc("Search engine", "Mojeek"));
 132     searchEngineMonoclesActionPointer->setText(i18nc("Search engine", "Monocles"));
 133     searchEngineMetagerActionPointer->setText(i18nc("Search engine", "MetaGer"));
 134     searchEngineGoogleActionPointer->setText(i18nc("Search engine", "Google"));
 135     searchEngineBingActionPointer->setText(i18nc("Search engine", "Bing"));
 136     searchEngineYahooActionPointer->setText(i18nc("Search engine", "Yahoo"));
 137     domainSettingsActionPointer->setText(i18nc("Domain Settings action", "Domain Settings"));
 138     cookiesActionPointer->setText(i18nc("Cookies action", "Cookies"));
 139     javaScriptActionPointer->setText(i18nc("JavaScript action", "JavaScript"));
 140     localStorageActionPointer->setText(i18nc("Local Storage action", "Local Storage"));
 141
 142     // Set the action icons.
 143     userAgentPrivacyBrowserActionPointer->setIcon(QIcon(":/icons/privacy-mode"));
 144     userAgentWebEngineDefaultActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 145     userAgentFirefoxLinuxActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("firefox-esr")));
 146     userAgentChromiumLinuxActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("chromium")));
 147     userAgentFirefoxWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("firefox-esr")));
 148     userAgentChromeWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("chromium")));
 149     userAgentEdgeWindowsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 150     userAgentSafariMacosActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 151     userAgentCustomActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("user-group-properties")));
 152     searchEngineMojeekActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 153     searchEngineMonoclesActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 154     searchEngineMetagerActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 155     searchEngineGoogleActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("im-google")));
 156     searchEngineBingActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 157     searchEngineYahooActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("im-yahoo")));
 158     searchEngineCustomActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("search")));
 159     zoomFactorActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("zoom")));
 160     domainSettingsActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("settings-configure")));
 161     cookiesActionPointer->setIcon(QIcon::fromTheme(QStringLiteral("preferences-web-browser-cookies")));
 162
 163     // Update the on-the-fly menus.
 164     connect(browserViewPointer, SIGNAL(updateUserAgentActions(QString)), this, SLOT(updateUserAgentActions(QString)));
 165     connect(browserViewPointer, SIGNAL(updateZoomFactorAction(double)), this, SLOT(updateZoomFactorAction(double)));
 166     connect(browserViewPointer, SIGNAL(updateSearchEngineActions(QString)), this, SLOT(updateSearchEngineActions(QString)));
 167
 168     // Apply the on-the-fly settings when selected.
 169     connect(userAgentActionGroupPointer, SIGNAL(triggered(QAction*)), browserViewPointer, SLOT(applyOnTheFlyUserAgent(QAction*)));
 170     connect(searchEngineActionGroupPointer, SIGNAL(triggered(QAction*)), browserViewPointer, SLOT(applyOnTheFlySearchEngine(QAction*)));
 171
 172     // Display dialogs.
 173     connect(zoomFactorActionPointer, SIGNAL(triggered()), this, SLOT(getZoomFactorFromUser()));
 174     connect(cookiesActionPointer, SIGNAL(triggered()), this, SLOT(openCookiesDialog()));
 175     connect(domainSettingsActionPointer, SIGNAL(triggered()), this, SLOT(openDomainSettings()));
 176
 177     // Connect the URL toolbar actions.
 178     connect(javaScriptActionPointer, SIGNAL(triggered()), this, SLOT(toggleJavaScript()));
 179     connect(localStorageActionPointer, SIGNAL(triggered()), this, SLOT(toggleLocalStorage()));
 180
 181     // Update the URL toolbar actions.
 182     connect(browserViewPointer, SIGNAL(updateBackAction(bool)), backActionPointer, SLOT(setEnabled(bool)));
 183     connect(browserViewPointer, SIGNAL(updateForwardAction(bool)), forwardActionPointer, SLOT(setEnabled(bool)));
 184     connect(browserViewPointer, SIGNAL(updateJavaScriptAction(bool)), this, SLOT(updateJavaScriptAction(bool)));
 185     connect(browserViewPointer, SIGNAL(updateLocalStorageAction(bool)), this, SLOT(updateLocalStorageAction(bool)));
 186
 187     // Setup the GUI based on the browser_ui.rc file.
 188     setupGUI(StandardWindowOption::Default, ("browser_ui.rc"));
 189
 190     // Get a handle for the URL toolbar.
 191     KToolBar *urlToolBarPointer = toolBar(QStringLiteral("url_toolbar"));
 192
 193     // Create a URL line edit.
 194     urlLineEditPointer = new KLineEdit();
 195
 196     // Add an edit or add domain settings action to the URL line edit.
 197     QAction *addOrEditDomainSettingsActionPointer = urlLineEditPointer->addAction(QIcon::fromTheme("settings-configure"), QLineEdit::TrailingPosition);
 198
 199     // Add or edit the current domain settings.
 200     connect(addOrEditDomainSettingsActionPointer, SIGNAL(triggered()), this, SLOT(addOrEditDomainSettings()));
 201
 202     // Populate the URL toolbar.
 203     urlToolBarPointer->insertWidget(javaScriptActionPointer, urlLineEditPointer);
 204
 205     // Load a new URL from the URL line edit.
 206     connect(urlLineEditPointer, SIGNAL(returnKeyPressed(const QString)), this, SLOT(loadUrlFromLineEdit(const QString)));
 207
 208     // Update the URL line edit on page loads.
 209     connect(browserViewPointer, SIGNAL(updateUrlLineEdit(QUrl)), this, SLOT(updateUrlLineEdit(QUrl)));
 210
 211     // Get a handle for the status bar.
 212     QStatusBar *statusBarPointer = statusBar();
 213
 214     // Create a progress bar.
 215     progressBarPointer = new QProgressBar();
 216
 217     // Add the progress bar to to the status bar.
 218     statusBarPointer->addPermanentWidget(progressBarPointer);
 219
 220     // Update the status bar with the URL when a link is hovered.
 221     connect(browserViewPointer, SIGNAL(linkHovered(QString)), statusBarPointer, SLOT(showMessage(QString)));
 222
 223     // Update the progress bar.
 224     connect(browserViewPointer, SIGNAL(showProgressBar(const int)), this, SLOT(showProgressBar(const int)));
 225     connect(browserViewPointer, SIGNAL(hideProgressBar()), progressBarPointer, SLOT(hide()));
 226
 227     // Clear the URL line edit focus when requested.
 228     connect(browserViewPointer, SIGNAL(clearUrlLineEditFocus()), this, SLOT(clearUrlLineEditFocus()));
 229
 230     // Get the URL line edit palettes.
 231     noDomainSettingsPalette = urlLineEditPointer->palette();
 232     domainSettingsPalette = urlLineEditPointer->palette();
 233
 234     // Modify the domain settings palette.
 235     domainSettingsPalette.setColor(QPalette::Base, QColor("#C8E6C9"));
 236
 237     // Update the applied palette.
 238     connect(browserViewPointer, SIGNAL(updateDomainSettingsIndicator(bool, QString)), this, SLOT(updateDomainSettingsIndicator(bool, QString)));
 239
 240     // Initialize the cookie list.
 241     cookieListPointer = new QList<QNetworkCookie>;
 242
 243     // Add new cookies to the list.
 244     connect(browserViewPointer, SIGNAL(addCookie(QNetworkCookie)), this, SLOT(addCookieToList(QNetworkCookie)));
 245
 246     // Load the initial website.
 247     browserViewPointer->loadInitialWebsite();
 248 }
 249
 250 void BrowserWindow::addCookieToList(const QNetworkCookie &newCookie) const
 251 {
 252     // Check to see if the list already contains a cookie with this ID.
 253     for (QNetworkCookie existingCookie : *cookieListPointer)
 254     {
 255         // Remove the old version of the cookie.
 256         if (existingCookie.hasSameIdentifier(newCookie)) cookieListPointer->removeOne(existingCookie);
 257     }
 258
 259     // Add the new cookie to the list.
 260     cookieListPointer->append(newCookie);
 261 }
 262
 263 void BrowserWindow::addOrEditDomainSettings() const
 264 {
 265     // Remove the focus from the URL line edit.
 266     urlLineEditPointer->clearFocus();
 267
 268     // Create the domain settings dialog pointer.
 269     DomainSettingsDialog *domainSettingsDialogPointer;
 270
 271     // Run the commands according to the current domain settings status.
 272     if (currentDomainSettingsDomain == "")  // Domain settings are not currently applied.
 273     {
 274         // Instruct the domain settings dialog to add a new domain.
 275         domainSettingsDialogPointer = new DomainSettingsDialog(DomainSettingsDialog::ADD_DOMAIN, currentUrl.host());
 276     }
 277     else  // Domain settings are currently applied.
 278     {
 279         // Instruct the domain settings dialog to edit the current domain.
 280         domainSettingsDialogPointer = new DomainSettingsDialog(DomainSettingsDialog::EDIT_DOMAIN, currentDomainSettingsDomain);
 281     }
 282
 283     // Set the dialog window title.
 284     domainSettingsDialogPointer->setWindowTitle(i18nc("The domain settings dialog title", "Domain Settings"));
 285
 286     // Set the modality.
 287     domainSettingsDialogPointer->setWindowModality(Qt::WindowModality::WindowModal);;
 288
 289     // Show the dialog.
 290     domainSettingsDialogPointer->show();
 291
 292     // Reload the tabs when domain settings are updated.
 293     connect(domainSettingsDialogPointer, SIGNAL(domainSettingsUpdated()), browserViewPointer, SLOT(applyDomainSettingsAndReload()));
 294 }
 295
 296 void BrowserWindow::back() const
 297 {
 298     // Remove the focus from the URL line edit.
 299     urlLineEditPointer->clearFocus();
 300
 301     // Go back.
 302     browserViewPointer->back();
 303 }
 304
 305 void BrowserWindow::clearUrlLineEditFocus() const
 306 {
 307     // Remove the focus from the URL line edit.
 308     urlLineEditPointer->clearFocus();
 309 }
 310
 311 void BrowserWindow::fileNew() const
 312 {
 313     // Display a new instance of Privacy Browser.
 314     (new BrowserWindow)->show();
 315 }
 316
 317 void BrowserWindow::forward() const
 318 {
 319     // Remove the focus from the URL line edit.
 320     urlLineEditPointer->clearFocus();
 321
 322     // Go forward.
 323     browserViewPointer->forward();
 324 }
 325
 326 void BrowserWindow::getZoomFactorFromUser()
 327 {
 328     // Create an OK flag.
 329     bool okClicked;
 330
 331     // 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.
 332     double newZoomFactor = QInputDialog::getDouble(this, i18nc("The on-the-fly zoom factor dialog title", "On-The-Fly Zoom Factor"),
 333                                                    i18nc("The instruction text of the on-the-fly zoom factor dialog", "Enter a zoom factor between 0.25 and 5.00"),
 334                                                    currentZoomFactor, .025, 5.00, 2, &okClicked, Qt::WindowFlags(), 0.25);
 335
 336     // Update the zoom factor if the user clicked OK.
 337     if (okClicked)
 338     {
 339         // Update the current zoom factor.
 340         currentZoomFactor = newZoomFactor;
 341
 342         // Set the new zoom factor.
 343         browserViewPointer->applyOnTheFlyZoomFactor(newZoomFactor);
 344
 345         // Update the on-the-fly action text.
 346         updateZoomFactorAction(newZoomFactor);
 347     }
 348 }
 349
 350 void BrowserWindow::home() const
 351 {
 352     // Remove the focus from the URL line edit.
 353     urlLineEditPointer->clearFocus();
 354
 355     // Go home.
 356     browserViewPointer->home();
 357 }
 358
 359 void BrowserWindow::loadUrlFromLineEdit(const QString &url) const
 360 {
 361     // Remove the focus from the URL line edit.
 362     urlLineEditPointer->clearFocus();
 363
 364     // Load the URL.
 365     browserViewPointer->loadUrlFromLineEdit(url);
 366 }
 367
 368 void BrowserWindow::openCookiesDialog()
 369 {
 370     // Remove the focus from the URL line edit.
 371     urlLineEditPointer->clearFocus();
 372
 373     // Instantiate the cookie settings dialog.
 374     CookiesDialog *cookiesDialogPointer = new CookiesDialog(cookieListPointer);
 375
 376     // Show the dialog.
 377     cookiesDialogPointer->show();
 378
 379     // Connect the dialog signals.
 380     connect(cookiesDialogPointer, SIGNAL(addCookie(QNetworkCookie)), browserViewPointer, SLOT(addCookieToStore(QNetworkCookie)));
 381     connect(cookiesDialogPointer, SIGNAL(deleteAllCookies()), browserViewPointer, SLOT(deleteAllCookies()));
 382 }
 383
 384 void BrowserWindow::openDomainSettings() const
 385 {
 386     // Remove the focus from the URL line edit.
 387     urlLineEditPointer->clearFocus();
 388
 389     // Instantiate the domain settings dialog.
 390     DomainSettingsDialog *domainSettingsDialogPointer = new DomainSettingsDialog();
 391
 392     // Show the dialog.
 393     domainSettingsDialogPointer->show();
 394
 395     // Reload the tabs when domain settings are updated.
 396     connect(domainSettingsDialogPointer, SIGNAL(domainSettingsUpdated()), browserViewPointer, SLOT(applyDomainSettingsAndReload()));
 397 }
 398
 399 void BrowserWindow::refresh() const
 400 {
 401     // Remove the focus from the URL line edit.
 402     urlLineEditPointer->clearFocus();
 403
 404     // Refresh the web page.
 405     browserViewPointer->refresh();
 406 }
 407
 408 void BrowserWindow::showProgressBar(const int &progress) const
 409 {
 410     // Set the progress bar value.
 411     progressBarPointer->setValue(progress);
 412
 413     // Show the progress bar.
 414     progressBarPointer->show();
 415 }
 416
 417 QSize BrowserWindow::sizeHint() const
 418 {
 419     // Return the default window size.
 420     return QSize(1500, 1200);
 421 }
 422
 423 void BrowserWindow::settingsConfigure()
 424 {
 425     // Check to make sure the dialog box isn't already displayed.
 426     if (KConfigDialog::exists(QStringLiteral("settings")))
 427     {
 428         // Show the existing config dialog if it is hidden.
 429         configDialogPointer->show();
 430
 431         // Raise the existing config dialog if it is below other windows.
 432         configDialogPointer->raise();
 433
 434         // Restore the existing config dialog if it has been minimized.
 435         if (configDialogPointer->isMinimized()) {
 436             configDialogPointer->showNormal();
 437         }
 438
 439         // Activate the existing config dialog, which brings its virtual desktop into focus.
 440         configDialogPointer->activateWindow();
 441     }
 442     else
 443     {
 444         // Create the settings widgets.
 445         QWidget *privacySettingsWidgetPointer = new QWidget;
 446         QWidget *generalSettingsWidgetPointer = new QWidget;
 447
 448         // Instantiate the settings UI.
 449         Ui::PrivacySettings privacySettingsUi;
 450         Ui::GeneralSettings generalSettingsUi;
 451
 452         // Setup the UI to display the settings widgets.
 453         privacySettingsUi.setupUi(privacySettingsWidgetPointer);
 454         generalSettingsUi.setupUi(generalSettingsWidgetPointer);
 455
 456         // Get handles for the widgets.
 457         QComboBox *userAgentComboBoxPointer = privacySettingsUi.kcfg_userAgent;
 458         userAgentLabelPointer = privacySettingsUi.userAgentLabel;
 459         QComboBox *searchEngineComboBoxPointer = generalSettingsUi.kcfg_searchEngine;
 460         searchEngineLabelPointer = generalSettingsUi.searchEngineLabel;
 461
 462         // Populate the combo box labels.
 463         updateUserAgentLabel(userAgentComboBoxPointer->currentText());
 464         updateSearchEngineLabel(searchEngineComboBoxPointer->currentText());
 465
 466         // Update the labels when the combo boxes change.
 467         connect(userAgentComboBoxPointer, SIGNAL(currentTextChanged(const QString)), this, SLOT(updateUserAgentLabel(const QString)));
 468         connect(searchEngineComboBoxPointer, SIGNAL(currentTextChanged(const QString)), this, SLOT(updateSearchEngineLabel(const QString)));
 469
 470         // Instantiate a settings config dialog from the settings.kcfg file.
 471         configDialogPointer = new KConfigDialog(this, QStringLiteral("settings"), Settings::self());
 472
 473         // Add the settings widgets as config dialog pages.
 474         configDialogPointer->addPage(privacySettingsWidgetPointer, i18nc("@title:tab", "Privacy"), QStringLiteral("privacy-browser"));
 475         configDialogPointer->addPage(generalSettingsWidgetPointer, i18nc("@title:tab", "General"), QStringLiteral("breeze-settings"));
 476
 477         // Delete the config dialog when it is closed.
 478         configDialogPointer->setAttribute(Qt::WA_DeleteOnClose);
 479
 480         // Make it so.
 481         configDialogPointer->show();
 482
 483         // TODO.  KConfigDialog does not respect expanding size policies.  <https://redmine.stoutner.com/issues/823>
 484         //configDialogPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 485         //privacySettingsWidgetPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 486         //generalSettingsWidgetPointer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 487         //configDialogPointer->adjustSize();
 488
 489         // Expand the config dialog.
 490         configDialogPointer->resize(1000, 500);
 491
 492         // Apply the settings when they are updated.
 493         connect(configDialogPointer, SIGNAL(settingsChanged(QString)), browserViewPointer, SLOT(applyApplicationSettings()));
 494         connect(configDialogPointer, SIGNAL(settingsChanged(QString)), browserViewPointer, SLOT(applyDomainSettingsAndReload()));
 495     }
 496 }
 497
 498 void BrowserWindow::toggleJavaScript() const
 499 {
 500     // Remove the focus from the URL line edit.
 501     urlLineEditPointer->clearFocus();
 502
 503     // Toggle JavaScript.
 504     browserViewPointer->toggleJavaScript();
 505 }
 506
 507 void BrowserWindow::toggleLocalStorage() const
 508 {
 509     // Remove the focus from the URL line edit.
 510     urlLineEditPointer->clearFocus();
 511
 512     // Toggle JavaScript.
 513     browserViewPointer->toggleLocalStorage();
 514 }
 515
 516 void BrowserWindow::updateDomainSettingsIndicator(const bool &status, const QString &domainSettingsDomain)
 517 {
 518     // Set the domain palette according to the status.
 519     if (status) urlLineEditPointer->setPalette(domainSettingsPalette);
 520     else urlLineEditPointer->setPalette(noDomainSettingsPalette);
 521
 522     // Store the domain.
 523     currentDomainSettingsDomain = domainSettingsDomain;
 524 }
 525
 526 void BrowserWindow::updateJavaScriptAction(const bool &isEnabled) const
 527 {
 528     // Set the icon according to the status.
 529     if (isEnabled) javaScriptActionPointer->setIcon(QIcon(":/icons/javascript-warning"));
 530     else javaScriptActionPointer->setIcon(QIcon(":/icons/privacy-mode"));
 531 }
 532
 533 void BrowserWindow::updateLocalStorageAction(const bool &isEnabled) const
 534 {
 535     // Set the icon according to the status.
 536     if (isEnabled) localStorageActionPointer->setIcon(QIcon::fromTheme("disk-quota-low"));
 537     else localStorageActionPointer->setIcon(QIcon::fromTheme("disk-quota"));
 538 }
 539
 540 void BrowserWindow::updateSearchEngineActions(const QString &searchEngine) const
 541 {
 542     // Initialize the custom search engine flag.
 543     bool customSearchEngine = false;
 544
 545     if (searchEngine == "Mojeek")  // Mojeek.
 546     {
 547         searchEngineMojeekActionPointer->setChecked(true);
 548     }
 549     else if (searchEngine == "Monocles")  // Monocles.
 550     {
 551         searchEngineMonoclesActionPointer->setChecked(true);
 552     }
 553     else if (searchEngine == "MetaGer")  // MetaGer.
 554     {
 555         searchEngineMetagerActionPointer->setChecked(true);
 556     }
 557     else if (searchEngine == "Google")  // Google.
 558     {
 559         searchEngineGoogleActionPointer->setChecked(true);
 560     }
 561     else if (searchEngine == "Bing")  // Bing.
 562     {
 563         searchEngineBingActionPointer->setChecked(true);
 564     }
 565     else if (searchEngine == "Yahoo")  // Yahoo.
 566     {
 567         searchEngineYahooActionPointer->setChecked(true);
 568     }
 569     else  // Custom search engine.
 570     {
 571         // Check the user agent.
 572         searchEngineCustomActionPointer->setChecked(true);
 573
 574         // Set the custom search engine flag.
 575         customSearchEngine = true;
 576     }
 577
 578     // Format the custom search engine.
 579     if (customSearchEngine)
 580     {
 581         // Enable the custom search engine.
 582         searchEngineCustomActionPointer->setEnabled(true);
 583
 584         // Set the custom search engine text.
 585         searchEngineCustomActionPointer->setText(searchEngine);
 586     }
 587     else
 588     {
 589         // Disable the custom search engine.
 590         searchEngineCustomActionPointer->setEnabled(false);
 591
 592         // Reset the custom search engine text.
 593         searchEngineCustomActionPointer->setText(i18nc("@action", "Custom"));
 594     }
 595 }
 596
 597 void BrowserWindow::updateUserAgentActions(const QString &userAgent) const
 598 {
 599     // Initialize the custom user agent flag.
 600     bool customUserAgent = false;
 601
 602     // Check the indicated on-the-fly user agent.
 603     if (userAgent == UserAgentHelper::PRIVACY_BROWSER_USER_AGENT) userAgentPrivacyBrowserActionPointer->setChecked(true);  // Privacy Browser.
 604     else if (userAgent == BrowserView::webEngineDefaultUserAgent) userAgentWebEngineDefaultActionPointer->setChecked(true);  // WebEngine default.
 605     else if (userAgent == UserAgentHelper::FIREFOX_LINUX_USER_AGENT) userAgentFirefoxLinuxActionPointer->setChecked(true);  // Firefox Linux.
 606     else if (userAgent == UserAgentHelper::CHROMIUM_LINUX_USER_AGENT) userAgentChromiumLinuxActionPointer->setChecked(true);  // Chromium Linux.
 607     else if (userAgent == UserAgentHelper::FIREFOX_WINDOWS_USER_AGENT) userAgentFirefoxWindowsActionPointer->setChecked(true);  // Firefox Windows.
 608     else if (userAgent == UserAgentHelper::CHROME_WINDOWS_USER_AGENT) userAgentChromeWindowsActionPointer->setChecked(true);  // Chrome Windows.
 609     else if (userAgent == UserAgentHelper::EDGE_WINDOWS_USER_AGENT) userAgentEdgeWindowsActionPointer->setChecked(true);  // Edge Windows.
 610     else if (userAgent == UserAgentHelper::SAFARI_MACOS_USER_AGENT) userAgentSafariMacosActionPointer->setChecked(true);  // Safara macOS.
 611     else  // Custom user agent.
 612     {
 613         // Check the user agent.
 614         userAgentCustomActionPointer->setChecked(true);
 615
 616         // Set the custom user agent flag.
 617         customUserAgent = true;
 618     }
 619
 620
 621     // Format the custom user agent.
 622     if (customUserAgent)
 623     {
 624         // Enable the custom user agent.
 625         userAgentCustomActionPointer->setEnabled(true);
 626
 627         // Set the custom user agent text.
 628         userAgentCustomActionPointer->setText(userAgent);
 629     }
 630     else
 631     {
 632         // Disable the custom user agent.
 633         userAgentCustomActionPointer->setEnabled(false);
 634
 635         // Reset the custom user agent text.
 636         userAgentCustomActionPointer->setText(i18nc("@action", "Custom"));
 637     }
 638 }
 639
 640 void BrowserWindow::updateZoomFactorAction(const double &zoomFactor)
 641 {
 642     // Set the current zoom factor.
 643     currentZoomFactor = zoomFactor;
 644
 645     // Update the zoom factor action text, formatting the double with 2 decimal places.
 646     zoomFactorActionPointer->setText(ki18nc("@action", "Zoom Factor - %1").subs(zoomFactor, 0, '0', 2).toString());
 647 }
 648
 649 void BrowserWindow::updateSearchEngineLabel(const QString &searchEngineString) const
 650 {
 651     // Update the search engine label.
 652     searchEngineLabelPointer->setText(SearchEngineHelper::getSearchUrl(searchEngineString));
 653 }
 654
 655 void BrowserWindow::updateUrlLineEdit(const QUrl &newUrl)
 656 {
 657     // Update the URL line edit if it does not have focus.
 658     if (!urlLineEditPointer->hasFocus())
 659     {
 660         // Update the URL line edit.
 661         urlLineEditPointer->setText(newUrl.toString());
 662     }
 663
 664     // Store the current URL.
 665     currentUrl = newUrl;
 666 }
 667
 668 void BrowserWindow::updateUserAgentLabel(const QString &userAgentDatabaseName) const
 669 {
 670     // Update the user agent label.
 671     userAgentLabelPointer->setText(UserAgentHelper::getUserAgentFromDatabaseName(userAgentDatabaseName));
 672 }