WebBrowser/WebBrowserWindow.py

# -*- coding: utf-8 -*-

# Copyright (c) 2002 - 2016 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the web browser main window.
"""

from __future__ import unicode_literals
try:
    str = unicode           # __IGNORE_EXCEPTION__
except NameError:
    pass

import os

from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt, QByteArray, QSize, QTimer, \
    QUrl, QThread, QTextCodec
from PyQt5.QtGui import QDesktopServices, QKeySequence, QFont, QFontMetrics, \
    QIcon
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QSizePolicy, QDockWidget, \
    QComboBox, QLabel, QSplitter, QMenu, QToolButton, QLineEdit, \
    QApplication, QWhatsThis, QDialog, QHBoxLayout, QProgressBar, QAction, \
    QInputDialog
##from PyQt5.QtNetwork import QNetworkAccessManager, QNetworkRequest
from PyQt5.QtWebEngineWidgets import QWebEngineSettings, QWebEnginePage, \
    QWebEngineProfile, QWebEngineScript
try:
    from PyQt5.QtHelp import QHelpEngine, QHelpEngineCore, QHelpSearchQuery
    QTHELP_AVAILABLE = True
except ImportError:
    QTHELP_AVAILABLE = False

from E5Gui.E5Action import E5Action
from E5Gui import E5MessageBox, E5FileDialog, E5ErrorMessage
from E5Gui.E5MainWindow import E5MainWindow
from E5Gui.E5Application import e5App
from E5Gui.E5ZoomWidget import E5ZoomWidget

##from E5Network.E5NetworkIcon import E5NetworkIcon

import Preferences
from Preferences import Shortcuts

import Utilities

import UI.PixmapCache
import UI.Config
from UI.Info import Version
##
##from .Network.NetworkAccessManager import SSL_AVAILABLE
##
##from .data import icons_rc          # __IGNORE_WARNING__
##from .data import html_rc           # __IGNORE_WARNING__
from .data import javascript_rc     # __IGNORE_WARNING__


from .Tools import Scripts, WebBrowserTools, WebIconProvider

from .ZoomManager import ZoomManager


class WebBrowserWindow(E5MainWindow):
    """
    Class implementing the web browser main window.
    
    @signal webBrowserClosed() emitted after the window was requested to close
    @signal zoomTextOnlyChanged(bool) emitted after the zoom text only setting
        was changed
    """
##    zoomTextOnlyChanged = pyqtSignal(bool)
    webBrowserClosed = pyqtSignal()
##    privacyChanged = pyqtSignal(bool)
    
    BrowserWindows = []

##    maxMenuFilePathLen = 75
##    
    _fromEric = False
    UseQtHelp = QTHELP_AVAILABLE
    
    _webProfile = None
    _networkManager = None
##    _cookieJar = None
##    _helpEngine = None
    _bookmarksManager = None
    _historyManager = None
    _passwordManager = None
##    _adblockManager = None
##    _downloadManager = None
##    _feedsManager = None
##    _userAgentsManager = None
##    _syncManager = None
##    _speedDial = None
##    _personalInformationManager = None
##    _greaseMonkeyManager = None
    _notification = None
    _featurePermissionManager = None
    _flashCookieManager = None
    
    def __init__(self, home, path, parent, name, fromEric=False,
                 initShortcutsOnly=False, searchWord=None,
                 private=False):
        """
        Constructor
        
        @param home the URL to be shown (string)
        @param path the path of the working dir (usually '.') (string)
        @param parent parent widget of this window (QWidget)
        @param name name of this window (string)
        @param fromEric flag indicating whether it was called from within
            eric6 (boolean)
        @keyparam initShortcutsOnly flag indicating to just initialize the
            keyboard shortcuts (boolean)
        @keyparam searchWord word to search for (string)
        @keyparam private flag indicating a private browsing window (bool)
        """
        super(WebBrowserWindow, self).__init__(parent)
        self.setObjectName(name)
        self.setWindowTitle(self.tr("eric6 Web Browser"))
        
        self.__fromEric = fromEric
        WebBrowserWindow._fromEric = fromEric
        self.__initShortcutsOnly = initShortcutsOnly
        self.setWindowIcon(UI.PixmapCache.getIcon("ericWeb.png"))

        self.__mHistory = []
        self.__lastConfigurationPageName = ""
        
        self.__isPrivate = private
        
        self.__eventMouseButtons = Qt.NoButton
        self.__eventKeyboardModifiers = Qt.NoModifier
        
        if self.__initShortcutsOnly:
            self.__initActions()
        else:
            self.webProfile(private)
##            if self.isPrivate():
##                self.__webProfile = QWebEngineProfile(self)
##            else:
##                self.__webProfile = QWebEngineProfile.defaultProfile()
##            self.__webProfile.downloadRequested.connect(
##                self.__downloadRequested)
##            
##            # Setup QWebChannel user script
##            script = QWebEngineScript()
##            script.setName("_eric_webchannel")
##            script.setInjectionPoint(QWebEngineScript.DocumentCreation)
##            script.setWorldId(QWebEngineScript.MainWorld)
##            script.setRunsOnSubFrames(True)
##            script.setSourceCode(Scripts.setupWebChannel())
##            self.__webProfile.scripts().insert(script)
            
            from .SearchWidget import SearchWidget
            # TODO: QtHelp
##            from .HelpTocWidget import HelpTocWidget
##            from .HelpIndexWidget import HelpIndexWidget
##            from .HelpSearchWidget import HelpSearchWidget
            from .WebBrowserView import WebBrowserView
            from .WebBrowserTabWidget import WebBrowserTabWidget
            # TODO: AdBlock
##            from .AdBlock.AdBlockIcon import AdBlockIcon
            # TODO: VirusTotal
##            from .VirusTotal.VirusTotalApi import VirusTotalAPI
            
            # TODO: allow using Qt Help even if not called from eric6
            WebBrowserWindow.setUseQtHelp(self.__fromEric)
            
            if not self.__fromEric:
                self.setStyle(Preferences.getUI("Style"),
                              Preferences.getUI("StyleSheet"))
                
                # TODO: Check if this is needed with QtWebEngine
                # initialize some SSL stuff
##                from E5Network.E5SslUtilities import initSSL
##                initSSL()
            
            # TODO: do these once Qt 5.6 is available
##            if WebBrowserWindow.UseQtHelp:
##                self.__helpEngine = \
##                    QHelpEngine(os.path.join(Utilities.getConfigDir(),
##                                             "web_browser", "eric6help.qhc"), self)
##                self.__removeOldDocumentation()
##                self.__helpEngine.warning.connect(self.__warning)
##            else:
##                self.__helpEngine = None
##            self.__helpInstaller = None
            
            self.__zoomWidget = E5ZoomWidget(
                UI.PixmapCache.getPixmap("zoomOut.png"),
                UI.PixmapCache.getPixmap("zoomIn.png"),
                UI.PixmapCache.getPixmap("zoomReset.png"), self)
            self.statusBar().addPermanentWidget(self.__zoomWidget)
            self.__zoomWidget.setMapping(
                WebBrowserView.ZoomLevels, WebBrowserView.ZoomLevelDefault)
            self.__zoomWidget.valueChanged.connect(self.__zoomValueChanged)
            
            self.__tabWidget = WebBrowserTabWidget(self)
            self.__tabWidget.currentChanged[int].connect(self.__currentChanged)
            self.__tabWidget.titleChanged.connect(self.__titleChanged)
            self.__tabWidget.showMessage.connect(self.statusBar().showMessage)
            self.__tabWidget.browserClosed.connect(self.__browserClosed)
            self.__tabWidget.browserZoomValueChanged.connect(
                self.__zoomWidget.setValue)
            
            self.__searchWidget = SearchWidget(self, self)
            centralWidget = QWidget()
            layout = QVBoxLayout()
            layout.setContentsMargins(1, 1, 1, 1)
            layout.addWidget(self.__tabWidget)
            layout.addWidget(self.__searchWidget)
            self.__tabWidget.setSizePolicy(
                QSizePolicy.Preferred, QSizePolicy.Expanding)
            centralWidget.setLayout(layout)
            self.setCentralWidget(centralWidget)
            self.__searchWidget.hide()
            
            # TODO: QtHelp, do these once Qt 5.6 is available
##            if WebBrowserWindow.UseQtHelp:
##                # setup the TOC widget
##                self.__tocWindow = HelpTocWidget(self.__helpEngine, self)
##                self.__tocDock = QDockWidget(self.tr("Contents"), self)
##                self.__tocDock.setObjectName("TocWindow")
##                self.__tocDock.setWidget(self.__tocWindow)
##                self.addDockWidget(Qt.LeftDockWidgetArea, self.__tocDock)
##                
##                # setup the index widget
##                self.__indexWindow = HelpIndexWidget(self.__helpEngine, self)
##                self.__indexDock = QDockWidget(self.tr("Index"), self)
##                self.__indexDock.setObjectName("IndexWindow")
##                self.__indexDock.setWidget(self.__indexWindow)
##                self.addDockWidget(Qt.LeftDockWidgetArea, self.__indexDock)
##                
##                # setup the search widget
##                self.__searchWord = searchWord
##                self.__indexing = False
##                self.__indexingProgress = None
##                self.__searchEngine = self.__helpEngine.searchEngine()
##                self.__searchEngine.indexingStarted.connect(
##                    self.__indexingStarted)
##                self.__searchEngine.indexingFinished.connect(
##                    self.__indexingFinished)
##                self.__searchWindow = HelpSearchWidget(
##                    self.__searchEngine, self)
##                self.__searchDock = QDockWidget(self.tr("Search"), self)
##                self.__searchDock.setObjectName("SearchWindow")
##                self.__searchDock.setWidget(self.__searchWindow)
##                self.addDockWidget(Qt.LeftDockWidgetArea, self.__searchDock)
##            
            if Preferences.getWebBrowser("SaveGeometry"):
                g = Preferences.getGeometry("WebBrowserGeometry")
            else:
                g = QByteArray()
            if g.isEmpty():
                s = QSize(800, 800)
                self.resize(s)
            else:
                self.restoreGeometry(g)
            
            self.__setIconDatabasePath()
            self.__initWebEngineSettings()
            
            self.passwordManager()
            
            self.__initActions()
            self.__initMenus()
            self.__initToolbars()
            
##            self.historyManager()
##            
##            syncMgr = self.syncManager()
##            syncMgr.syncMessage.connect(self.statusBar().showMessage)
##            syncMgr.syncError.connect(self.statusBar().showMessage)
##            
            self.__tabWidget.newBrowser(home)
            self.__tabWidget.currentBrowser().setFocus()
            
            WebBrowserWindow.BrowserWindows.append(self)
            
##            self.__adBlockIcon = AdBlockIcon(self)
##            self.statusBar().addPermanentWidget(self.__adBlockIcon)
##            self.__adBlockIcon.setEnabled(
##                Preferences.getWebBrowser("AdBlockEnabled"))
##            self.__tabWidget.currentChanged[int].connect(
##                self.__adBlockIcon.currentChanged)
##            self.__tabWidget.sourceChanged.connect(
##                self.__adBlockIcon.sourceChanged)
##            
##            self.networkIcon = E5NetworkIcon(self)
##            self.statusBar().addPermanentWidget(self.networkIcon)
##            
            QDesktopServices.setUrlHandler("http", self.__linkActivated)
            QDesktopServices.setUrlHandler("https", self.__linkActivated)
            
            # setup connections
            self.__activating = False
            # TODO: QtHelp, do these once Qt 5.6 is available
##            if WebBrowserWindow.UseQtHelp:
##                # TOC window
##                self.__tocWindow.linkActivated.connect(self.__linkActivated)
##                self.__tocWindow.escapePressed.connect(
##                    self.__activateCurrentBrowser)
##                # index window
##                self.__indexWindow.linkActivated.connect(self.__linkActivated)
##                self.__indexWindow.linksActivated.connect(
##                    self.__linksActivated)
##                self.__indexWindow.escapePressed.connect(
##                    self.__activateCurrentBrowser)
##                # search window
##                self.__searchWindow.linkActivated.connect(
##                    self.__linkActivated)
##                self.__searchWindow.escapePressed.connect(
##                    self.__activateCurrentBrowser)
            
            state = Preferences.getWebBrowser("WebBrowserState")
            self.restoreState(state)
            
##            self.__initHelpDb()
            
##            self.__virusTotal = VirusTotalAPI(self)
##            self.__virusTotal.submitUrlError.connect(
##                self.__virusTotalSubmitUrlError)
##            self.__virusTotal.urlScanReport.connect(
##                self.__virusTotalUrlScanReport)
##            self.__virusTotal.fileScanReport.connect(
##                self.__virusTotalFileScanReport)
##            
            self.__previewer = None
            self.__shutdownCalled = False
            
##            self.flashCookieManager()
##            
            # TODO: QtHelp, do these once Qt 5.6 is available
##            if WebBrowserWindow.UseQtHelp:
##                QTimer.singleShot(0, self.__lookForNewDocumentation)
##                if self.__searchWord is not None:
##                    QTimer.singleShot(0, self.__searchForWord)
##            
            self.__lastActiveWindow = None
            e5App().focusChanged[QWidget, QWidget].connect(
                self.__appFocusChanged)
##            
##            QTimer.singleShot(0, syncMgr.loadSettings)
    
    def __del__(self):
        """
        Special method called during object destruction.
        
        Note: This empty variant seems to get rid of the Qt message
        'Warning: QBasicTimer::start: QBasicTimer can only be used with
        threads started with QThread'
        """
        pass
    
    def fromEric(self):
        """
        Public method to check, if the web browser was called from within the
        eric IDE.
        
        @return flag indicating that the browserw as opened from within eric
        @rtype bool
        """
        return self.__fromEric
    
    def __setIconDatabasePath(self, enable=True):
        """
        Private method to set the favicons path.
        
        @param enable flag indicating to enabled icon storage (boolean)
        """
        if enable:
            iconDatabasePath = os.path.join(Utilities.getConfigDir(),
                                            "web_browser", "favicons")
            if not os.path.exists(iconDatabasePath):
                os.makedirs(iconDatabasePath)
        else:
            iconDatabasePath = ""   # setting an empty path disables it
        
        WebIconProvider.instance().setIconDatabasePath(iconDatabasePath)
        
    def __initWebEngineSettings(self):
        """
        Private method to set the global web settings.
        """
        standardFont = Preferences.getWebBrowser("StandardFont")
        fixedFont = Preferences.getWebBrowser("FixedFont")

        settings = QWebEngineSettings.globalSettings()
##        settings.setAttribute(QWebSettings.DeveloperExtrasEnabled, True)
        
        settings.setFontFamily(QWebEngineSettings.StandardFont,
                               standardFont.family())
        settings.setFontSize(QWebEngineSettings.DefaultFontSize,
                             standardFont.pointSize())
        settings.setFontFamily(QWebEngineSettings.FixedFont,
                               fixedFont.family())
        settings.setFontSize(QWebEngineSettings.DefaultFixedFontSize,
                             fixedFont.pointSize())
        settings.setFontSize(
            QWebEngineSettings.MinimumFontSize,
            Preferences.getWebBrowser("MinimumFontSize"))
        settings.setFontSize(
            QWebEngineSettings.MinimumLogicalFontSize,
            Preferences.getWebBrowser("MinimumLogicalFontSize"))
        
        styleSheet = Preferences.getWebBrowser("UserStyleSheet")
        self.__setUserStyleSheet(styleSheet)
        
        settings.setAttribute(
            QWebEngineSettings.AutoLoadImages,
            Preferences.getWebBrowser("AutoLoadImages"))
##        settings.setAttribute(
##            QWebSettings.JavaEnabled,
##            Preferences.getWebBrowser("JavaEnabled"))
        settings.setAttribute(
            QWebEngineSettings.JavascriptEnabled,
            Preferences.getWebBrowser("JavaScriptEnabled"))
        settings.setAttribute(
            QWebEngineSettings.JavascriptCanOpenWindows,
            Preferences.getWebBrowser("JavaScriptCanOpenWindows"))
        settings.setAttribute(
            QWebEngineSettings.JavascriptCanAccessClipboard,
            Preferences.getWebBrowser("JavaScriptCanAccessClipboard"))
##        settings.setAttribute(
##            QWebSettings.PluginsEnabled,
##            Preferences.getWebBrowser("PluginsEnabled"))
        
##        if hasattr(QWebSettings, "PrintElementBackgrounds"):
##            settings.setAttribute(
##                QWebSettings.PrintElementBackgrounds,
##                Preferences.getWebBrowser("PrintBackgrounds"))
##        
##        if hasattr(QWebSettings, "setOfflineStoragePath"):
##            settings.setAttribute(
##                QWebSettings.OfflineStorageDatabaseEnabled,
##                Preferences.getWebBrowser("OfflineStorageDatabaseEnabled"))
##            webDatabaseDir = os.path.join(
##                Utilities.getConfigDir(), "web_browser", "webdatabases")
##            if not os.path.exists(webDatabaseDir):
##                os.makedirs(webDatabaseDir)
##            settings.setOfflineStoragePath(webDatabaseDir)
##            settings.setOfflineStorageDefaultQuota(
##                Preferences.getWebBrowser("OfflineStorageDatabaseQuota") *
##                1024 * 1024)
##        
##        if hasattr(QWebSettings, "OfflineWebApplicationCacheEnabled"):
##            settings.setAttribute(
##                QWebSettings.OfflineWebApplicationCacheEnabled,
##                Preferences.getWebBrowser("OfflineWebApplicationCacheEnabled"))
##            appCacheDir = os.path.join(
##                Utilities.getConfigDir(), "web_browser", "webappcaches")
##            if not os.path.exists(appCacheDir):
##                os.makedirs(appCacheDir)
##            settings.setOfflineWebApplicationCachePath(appCacheDir)
##            settings.setOfflineWebApplicationCacheQuota(
##                Preferences.getWebBrowser("OfflineWebApplicationCacheQuota") *
##                1024 * 1024)
##        
        if self.isPrivate():
            settings.setAttribute(
                QWebEngineSettings.LocalStorageEnabled, False)
        else:
            settings.setAttribute(
                QWebEngineSettings.LocalStorageEnabled,
                Preferences.getWebBrowser("LocalStorageEnabled"))
##        localStorageDir = os.path.join(
##            Utilities.getConfigDir(), "web_browser", "weblocalstorage")
##        if not os.path.exists(localStorageDir):
##            os.makedirs(localStorageDir)
##        settings.setLocalStoragePath(localStorageDir)
##        
##        if hasattr(QWebSettings, "DnsPrefetchEnabled"):
##            settings.setAttribute(
##                QWebSettings.DnsPrefetchEnabled,
##                Preferences.getWebBrowser("DnsPrefetchEnabled"))
##        
        settings.setDefaultTextEncoding(
            Preferences.getWebBrowser("DefaultTextEncoding"))
        
        settings.setAttribute(
            QWebEngineSettings.SpatialNavigationEnabled,
            Preferences.getWebBrowser("SpatialNavigationEnabled"))
        settings.setAttribute(
            QWebEngineSettings.LinksIncludedInFocusChain,
            Preferences.getWebBrowser("LinksIncludedInFocusChain"))
        settings.setAttribute(
            QWebEngineSettings.LocalContentCanAccessRemoteUrls,
            Preferences.getWebBrowser("LocalContentCanAccessRemoteUrls"))
        settings.setAttribute(
            QWebEngineSettings.LocalContentCanAccessFileUrls,
            Preferences.getWebBrowser("LocalContentCanAccessFileUrls"))
        settings.setAttribute(
            QWebEngineSettings.XSSAuditingEnabled,
            Preferences.getWebBrowser("XSSAuditingEnabled"))
##        if hasattr(QWebSettings, "SiteSpecificQuirksEnabled"):
##            settings.setAttribute(
##                QWebSettings.SiteSpecificQuirksEnabled,
##                Preferences.getWebBrowser("SiteSpecificQuirksEnabled"))
##        
##        QWebSecurityOrigin.addLocalScheme("eric")
        settings.setAttribute(
            QWebEngineSettings.ScrollAnimatorEnabled,
            Preferences.getWebBrowser("ScrollAnimatorEnabled"))
        settings.setAttribute(
            QWebEngineSettings.ErrorPageEnabled,
            Preferences.getWebBrowser("ErrorPageEnabled"))
    
    def __initActions(self):
        """
        Private method to define the user interface actions.
        """
        # list of all actions
        self.__actions = []
        
        self.newTabAct = E5Action(
            self.tr('New Tab'),
            UI.PixmapCache.getIcon("tabNew.png"),
            self.tr('&New Tab'),
            QKeySequence(self.tr("Ctrl+T", "File|New Tab")),
            0, self, 'webbrowser_file_new_tab')
        self.newTabAct.setStatusTip(self.tr('Open a new web browser tab'))
        self.newTabAct.setWhatsThis(self.tr(
            """<b>New Tab</b>"""
            """<p>This opens a new web browser tab.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.newTabAct.triggered.connect(self.newTab)
        self.__actions.append(self.newTabAct)
        
        self.newAct = E5Action(
            self.tr('New Window'),
            UI.PixmapCache.getIcon("newWindow.png"),
            self.tr('New &Window'),
            QKeySequence(self.tr("Ctrl+N", "File|New Window")),
            0, self, 'webbrowser_file_new_window')
        self.newAct.setStatusTip(self.tr('Open a new web browser window'))
        self.newAct.setWhatsThis(self.tr(
            """<b>New Window</b>"""
            """<p>This opens a new web browser window.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.newAct.triggered.connect(self.newWindow)
        self.__actions.append(self.newAct)
        
        # TODO: Private Window
        
        self.openAct = E5Action(
            self.tr('Open File'),
            UI.PixmapCache.getIcon("open.png"),
            self.tr('&Open File'),
            QKeySequence(self.tr("Ctrl+O", "File|Open")),
            0, self, 'webbrowser_file_open')
        self.openAct.setStatusTip(self.tr('Open a file for display'))
        self.openAct.setWhatsThis(self.tr(
            """<b>Open File</b>"""
            """<p>This opens a new file for display."""
            """ It pops up a file selection dialog.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.openAct.triggered.connect(self.__openFile)
        self.__actions.append(self.openAct)
        
        self.openTabAct = E5Action(
            self.tr('Open File in New Tab'),
            UI.PixmapCache.getIcon("openNewTab.png"),
            self.tr('Open File in New &Tab'),
            QKeySequence(self.tr("Shift+Ctrl+O", "File|Open in new tab")),
            0, self, 'webbrowser_file_open_tab')
        self.openTabAct.setStatusTip(
            self.tr('Open a file for display in a new tab'))
        self.openTabAct.setWhatsThis(self.tr(
            """<b>Open File in New Tab</b>"""
            """<p>This opens a new file for display in a new tab."""
            """ It pops up a file selection dialog.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.openTabAct.triggered.connect(self.__openFileNewTab)
        self.__actions.append(self.openTabAct)
##        
##        self.saveAsAct = E5Action(
##            self.tr('Save As'),
##            UI.PixmapCache.getIcon("fileSaveAs.png"),
##            self.tr('&Save As...'),
##            QKeySequence(self.tr("Shift+Ctrl+S", "File|Save As")),
##            0, self, 'webbrowser_file_save_as')
##        self.saveAsAct.setStatusTip(
##            self.tr('Save the current page to disk'))
##        self.saveAsAct.setWhatsThis(self.tr(
##            """<b>Save As...</b>"""
##            """<p>Saves the current page to disk.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.saveAsAct.triggered.connect(self.__savePageAs)
##        self.__actions.append(self.saveAsAct)
##        
##        self.savePageScreenAct = E5Action(
##            self.tr('Save Page Screen'),
##            UI.PixmapCache.getIcon("fileSavePixmap.png"),
##            self.tr('Save Page Screen...'),
##            0, 0, self, 'webbrowser_file_save_page_screen')
##        self.savePageScreenAct.setStatusTip(
##            self.tr('Save the current page as a screen shot'))
##        self.savePageScreenAct.setWhatsThis(self.tr(
##            """<b>Save Page Screen...</b>"""
##            """<p>Saves the current page as a screen shot.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.savePageScreenAct.triggered.connect(self.__savePageScreen)
##        self.__actions.append(self.savePageScreenAct)
##        
##        self.saveVisiblePageScreenAct = E5Action(
##            self.tr('Save Visible Page Screen'),
##            UI.PixmapCache.getIcon("fileSaveVisiblePixmap.png"),
##            self.tr('Save Visible Page Screen...'),
##            0, 0, self, 'webbrowser_file_save_visible_page_screen')
##        self.saveVisiblePageScreenAct.setStatusTip(
##            self.tr('Save the visible part of the current page as a'
##                    ' screen shot'))
##        self.saveVisiblePageScreenAct.setWhatsThis(self.tr(
##            """<b>Save Visible Page Screen...</b>"""
##            """<p>Saves the visible part of the current page as a"""
##            """ screen shot.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.saveVisiblePageScreenAct.triggered.connect(
##                self.__saveVisiblePageScreen)
##        self.__actions.append(self.saveVisiblePageScreenAct)
        
        bookmarksManager = self.bookmarksManager()
        self.importBookmarksAct = E5Action(
            self.tr('Import Bookmarks'),
            self.tr('&Import Bookmarks...'),
            0, 0, self, 'webbrowser_file_import_bookmarks')
        self.importBookmarksAct.setStatusTip(
            self.tr('Import bookmarks from other browsers'))
        self.importBookmarksAct.setWhatsThis(self.tr(
            """<b>Import Bookmarks</b>"""
            """<p>Import bookmarks from other browsers.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.importBookmarksAct.triggered.connect(
                bookmarksManager.importBookmarks)
        self.__actions.append(self.importBookmarksAct)
        
        self.exportBookmarksAct = E5Action(
            self.tr('Export Bookmarks'),
            self.tr('&Export Bookmarks...'),
            0, 0, self, 'webbrowser_file_export_bookmarks')
        self.exportBookmarksAct.setStatusTip(
            self.tr('Export the bookmarks into a file'))
        self.exportBookmarksAct.setWhatsThis(self.tr(
            """<b>Export Bookmarks</b>"""
            """<p>Export the bookmarks into a file.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.exportBookmarksAct.triggered.connect(
                bookmarksManager.exportBookmarks)
        self.__actions.append(self.exportBookmarksAct)
        
        # TODO: print stuff
##        self.printAct = E5Action(
##            self.tr('Print'),
##            UI.PixmapCache.getIcon("print.png"),
##            self.tr('&Print'),
##            QKeySequence(self.tr("Ctrl+P", "File|Print")),
##            0, self, 'webbrowser_file_print')
##        self.printAct.setStatusTip(self.tr('Print the displayed help'))
##        self.printAct.setWhatsThis(self.tr(
##            """<b>Print</b>"""
##            """<p>Print the displayed help text.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.printAct.triggered.connect(self.__tabWidget.printBrowser)
##        self.__actions.append(self.printAct)
##        
##        self.printPdfAct = E5Action(
##            self.tr('Print as PDF'),
##            UI.PixmapCache.getIcon("printPdf.png"),
##            self.tr('Print as PDF'),
##            0, 0, self, 'webbrowser_file_print_pdf')
##        self.printPdfAct.setStatusTip(self.tr(
##            'Print the displayed help as PDF'))
##        self.printPdfAct.setWhatsThis(self.tr(
##            """<b>Print as PDF</b>"""
##            """<p>Print the displayed help text as a PDF file.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.printPdfAct.triggered.connect(
##                self.__tabWidget.printBrowserPdf)
##        self.__actions.append(self.printPdfAct)
##        
##        self.printPreviewAct = E5Action(
##            self.tr('Print Preview'),
##            UI.PixmapCache.getIcon("printPreview.png"),
##            self.tr('Print Preview'),
##            0, 0, self, 'webbrowser_file_print_preview')
##        self.printPreviewAct.setStatusTip(self.tr(
##            'Print preview of the displayed help'))
##        self.printPreviewAct.setWhatsThis(self.tr(
##            """<b>Print Preview</b>"""
##            """<p>Print preview of the displayed help text.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.printPreviewAct.triggered.connect(
##                self.__tabWidget.printPreviewBrowser)
##        self.__actions.append(self.printPreviewAct)
        
        self.closeAct = E5Action(
            self.tr('Close'),
            UI.PixmapCache.getIcon("close.png"),
            self.tr('&Close'),
            QKeySequence(self.tr("Ctrl+W", "File|Close")),
            0, self, 'webbrowser_file_close')
        self.closeAct.setStatusTip(self.tr(
            'Close the current help window'))
        self.closeAct.setWhatsThis(self.tr(
            """<b>Close</b>"""
            """<p>Closes the current web browser window.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.closeAct.triggered.connect(self.__tabWidget.closeBrowser)
        self.__actions.append(self.closeAct)
        
        self.closeAllAct = E5Action(
            self.tr('Close All'),
            self.tr('Close &All'),
            0, 0, self, 'webbrowser_file_close_all')
        self.closeAllAct.setStatusTip(self.tr('Close all help windows'))
        self.closeAllAct.setWhatsThis(self.tr(
            """<b>Close All</b>"""
            """<p>Closes all web browser windows except the first one.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.closeAllAct.triggered.connect(
                self.__tabWidget.closeAllBrowsers)
        self.__actions.append(self.closeAllAct)
        
        # TODO: Private Browsing
##        self.privateBrowsingAct = E5Action(
##            self.tr('Private Browsing'),
##            UI.PixmapCache.getIcon("privateBrowsing.png"),
##            self.tr('Private &Browsing'),
##            0, 0, self, 'webbrowser_file_private_browsing')
##        self.privateBrowsingAct.setStatusTip(self.tr('Private Browsing'))
##        self.privateBrowsingAct.setWhatsThis(self.tr(
##            """<b>Private Browsing</b>"""
##            """<p>Enables private browsing. In this mode no history is"""
##            """ recorded anymore.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.privateBrowsingAct.triggered.connect(
##                self.__privateBrowsing)
##        self.privateBrowsingAct.setCheckable(True)
##        self.__actions.append(self.privateBrowsingAct)
        
        self.exitAct = E5Action(
            self.tr('Quit'),
            UI.PixmapCache.getIcon("exit.png"),
            self.tr('&Quit'),
            QKeySequence(self.tr("Ctrl+Q", "File|Quit")),
            0, self, 'webbrowser_file_quit')
        self.exitAct.setStatusTip(self.tr('Quit the eric6 Web Browser'))
        self.exitAct.setWhatsThis(self.tr(
            """<b>Quit</b>"""
            """<p>Quit the eric6 Web Browser.</p>"""
        ))
        if not self.__initShortcutsOnly:
            if self.__fromEric:
                self.exitAct.triggered.connect(self.close)
            else:
                self.exitAct.triggered.connect(self.__closeAllWindows)
        self.__actions.append(self.exitAct)
        
        self.backAct = E5Action(
            self.tr('Backward'),
            UI.PixmapCache.getIcon("back.png"),
            self.tr('&Backward'),
            QKeySequence(self.tr("Alt+Left", "Go|Backward")),
            QKeySequence(self.tr("Backspace", "Go|Backward")),
            self, 'webbrowser_go_backward')
        self.backAct.setStatusTip(self.tr('Move one screen backward'))
        self.backAct.setWhatsThis(self.tr(
            """<b>Backward</b>"""
            """<p>Moves one screen backward. If none is"""
            """ available, this action is disabled.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.backAct.triggered.connect(self.__backward)
        self.__actions.append(self.backAct)
        
        self.forwardAct = E5Action(
            self.tr('Forward'),
            UI.PixmapCache.getIcon("forward.png"),
            self.tr('&Forward'),
            QKeySequence(self.tr("Alt+Right", "Go|Forward")),
            QKeySequence(self.tr("Shift+Backspace", "Go|Forward")),
            self, 'webbrowser_go_foreward')
        self.forwardAct.setStatusTip(self.tr(
            'Move one screen forward'))
        self.forwardAct.setWhatsThis(self.tr(
            """<b>Forward</b>"""
            """<p>Moves one screen forward. If none is"""
            """ available, this action is disabled.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.forwardAct.triggered.connect(self.__forward)
        self.__actions.append(self.forwardAct)
        
        self.homeAct = E5Action(
            self.tr('Home'),
            UI.PixmapCache.getIcon("home.png"),
            self.tr('&Home'),
            QKeySequence(self.tr("Ctrl+Home", "Go|Home")),
            0, self, 'webbrowser_go_home')
        self.homeAct.setStatusTip(self.tr(
            'Move to the initial help screen'))
        self.homeAct.setWhatsThis(self.tr(
            """<b>Home</b>"""
            """<p>Moves to the initial screen.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.homeAct.triggered.connect(self.__home)
        self.__actions.append(self.homeAct)
        
        self.reloadAct = E5Action(
            self.tr('Reload'),
            UI.PixmapCache.getIcon("reload.png"),
            self.tr('&Reload'),
            QKeySequence(self.tr("Ctrl+R", "Go|Reload")),
            QKeySequence(self.tr("F5", "Go|Reload")),
            self, 'webbrowser_go_reload')
        self.reloadAct.setStatusTip(self.tr(
            'Reload the current screen'))
        self.reloadAct.setWhatsThis(self.tr(
            """<b>Reload</b>"""
            """<p>Reloads the current screen.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.reloadAct.triggered.connect(self.__reload)
        self.__actions.append(self.reloadAct)
        # TODO: add 'Reload bypassing cache' or use that for above
        
        self.stopAct = E5Action(
            self.tr('Stop'),
            UI.PixmapCache.getIcon("stopLoading.png"),
            self.tr('&Stop'),
            QKeySequence(self.tr("Ctrl+.", "Go|Stop")),
            QKeySequence(self.tr("Esc", "Go|Stop")),
            self, 'webbrowser_go_stop')
        self.stopAct.setStatusTip(self.tr('Stop loading'))
        self.stopAct.setWhatsThis(self.tr(
            """<b>Stop</b>"""
            """<p>Stops loading of the current tab.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.stopAct.triggered.connect(self.__stopLoading)
        self.__actions.append(self.stopAct)
        
        self.copyAct = E5Action(
            self.tr('Copy'),
            UI.PixmapCache.getIcon("editCopy.png"),
            self.tr('&Copy'),
            QKeySequence(self.tr("Ctrl+C", "Edit|Copy")),
            0, self, 'webbrowser_edit_copy')
        self.copyAct.setStatusTip(self.tr('Copy the selected text'))
        self.copyAct.setWhatsThis(self.tr(
            """<b>Copy</b>"""
            """<p>Copy the selected text to the clipboard.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.copyAct.triggered.connect(self.__copy)
        self.__actions.append(self.copyAct)
        
        self.cutAct = E5Action(
            self.tr('Cut'),
            UI.PixmapCache.getIcon("editCut.png"),
            self.tr('Cu&t'),
            QKeySequence(self.tr("Ctrl+X", "Edit|Cut")),
            0, self, 'webbrowser_edit_cut')
        self.cutAct.setStatusTip(self.tr('Cut the selected text'))
        self.cutAct.setWhatsThis(self.tr(
            """<b>Cut</b>"""
            """<p>Cut the selected text to the clipboard.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.cutAct.triggered.connect(self.__cut)
        self.__actions.append(self.cutAct)
        
        self.pasteAct = E5Action(
            self.tr('Paste'),
            UI.PixmapCache.getIcon("editPaste.png"),
            self.tr('&Paste'),
            QKeySequence(self.tr("Ctrl+V", "Edit|Paste")),
            0, self, 'webbrowser_edit_paste')
        self.pasteAct.setStatusTip(self.tr('Paste text from the clipboard'))
        self.pasteAct.setWhatsThis(self.tr(
            """<b>Paste</b>"""
            """<p>Paste some text from the clipboard.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.pasteAct.triggered.connect(self.__paste)
        self.__actions.append(self.pasteAct)
        
        self.undoAct = E5Action(
            self.tr('Undo'),
            UI.PixmapCache.getIcon("editUndo.png"),
            self.tr('&Undo'),
            QKeySequence(self.tr("Ctrl+Z", "Edit|Undo")),
            0, self, 'webbrowser_edit_undo')
        self.undoAct.setStatusTip(self.tr('Undo the last edit action'))
        self.undoAct.setWhatsThis(self.tr(
            """<b>Undo</b>"""
            """<p>Undo the last edit action.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.undoAct.triggered.connect(self.__undo)
        self.__actions.append(self.undoAct)
        
        self.redoAct = E5Action(
            self.tr('Redo'),
            UI.PixmapCache.getIcon("editRedo.png"),
            self.tr('&Redo'),
            QKeySequence(self.tr("Ctrl+Shift+Z", "Edit|Redo")),
            0, self, 'webbrowser_edit_redo')
        self.redoAct.setStatusTip(self.tr('Redo the last edit action'))
        self.redoAct.setWhatsThis(self.tr(
            """<b>Redo</b>"""
            """<p>Redo the last edit action.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.redoAct.triggered.connect(self.__redo)
        self.__actions.append(self.redoAct)
        
        self.selectAllAct = E5Action(
            self.tr('Select All'),
            UI.PixmapCache.getIcon("editSelectAll.png"),
            self.tr('&Select All'),
            QKeySequence(self.tr("Ctrl+A", "Edit|Select All")),
            0, self, 'webbrowser_edit_select_all')
        self.selectAllAct.setStatusTip(self.tr('Select all text'))
        self.selectAllAct.setWhatsThis(self.tr(
            """<b>Select All</b>"""
            """<p>Select all text of the current browser.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.selectAllAct.triggered.connect(self.__selectAll)
        self.__actions.append(self.selectAllAct)
        
        self.findAct = E5Action(
            self.tr('Find...'),
            UI.PixmapCache.getIcon("find.png"),
            self.tr('&Find...'),
            QKeySequence(self.tr("Ctrl+F", "Edit|Find")),
            0, self, 'webbrowser_edit_find')
        self.findAct.setStatusTip(self.tr('Find text in page'))
        self.findAct.setWhatsThis(self.tr(
            """<b>Find</b>"""
            """<p>Find text in the current page.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.findAct.triggered.connect(self.__find)
        self.__actions.append(self.findAct)
        
        self.findNextAct = E5Action(
            self.tr('Find next'),
            UI.PixmapCache.getIcon("findNext.png"),
            self.tr('Find &next'),
            QKeySequence(self.tr("F3", "Edit|Find next")),
            0, self, 'webbrowser_edit_find_next')
        self.findNextAct.setStatusTip(self.tr(
            'Find next occurrence of text in page'))
        self.findNextAct.setWhatsThis(self.tr(
            """<b>Find next</b>"""
            """<p>Find the next occurrence of text in the current page.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.findNextAct.triggered.connect(self.__searchWidget.findNext)
        self.__actions.append(self.findNextAct)
        
        self.findPrevAct = E5Action(
            self.tr('Find previous'),
            UI.PixmapCache.getIcon("findPrev.png"),
            self.tr('Find &previous'),
            QKeySequence(self.tr("Shift+F3", "Edit|Find previous")),
            0, self, 'webbrowser_edit_find_previous')
        self.findPrevAct.setStatusTip(
            self.tr('Find previous occurrence of text in page'))
        self.findPrevAct.setWhatsThis(self.tr(
            """<b>Find previous</b>"""
            """<p>Find the previous occurrence of text in the current"""
            """ page.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.findPrevAct.triggered.connect(
                self.__searchWidget.findPrevious)
        self.__actions.append(self.findPrevAct)
        
        self.bookmarksManageAct = E5Action(
            self.tr('Manage Bookmarks'),
            self.tr('&Manage Bookmarks...'),
            QKeySequence(self.tr("Ctrl+Shift+B", "Help|Manage bookmarks")),
            0, self, 'webbrowser_bookmarks_manage')
        self.bookmarksManageAct.setStatusTip(self.tr(
            'Open a dialog to manage the bookmarks.'))
        self.bookmarksManageAct.setWhatsThis(self.tr(
            """<b>Manage Bookmarks...</b>"""
            """<p>Open a dialog to manage the bookmarks.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.bookmarksManageAct.triggered.connect(
                self.__showBookmarksDialog)
        self.__actions.append(self.bookmarksManageAct)
        
        self.bookmarksAddAct = E5Action(
            self.tr('Add Bookmark'),
            UI.PixmapCache.getIcon("addBookmark.png"),
            self.tr('Add &Bookmark...'),
            QKeySequence(self.tr("Ctrl+D", "Help|Add bookmark")),
            0, self, 'webbrowser_bookmark_add')
        self.bookmarksAddAct.setIconVisibleInMenu(False)
        self.bookmarksAddAct.setStatusTip(self.tr(
            'Open a dialog to add a bookmark.'))
        self.bookmarksAddAct.setWhatsThis(self.tr(
            """<b>Add Bookmark</b>"""
            """<p>Open a dialog to add the current URL as a bookmark.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.bookmarksAddAct.triggered.connect(self.__addBookmark)
        self.__actions.append(self.bookmarksAddAct)
        
        self.bookmarksAddFolderAct = E5Action(
            self.tr('Add Folder'),
            self.tr('Add &Folder...'),
            0, 0, self, 'webbrowser_bookmark_show_all')
        self.bookmarksAddFolderAct.setStatusTip(self.tr(
            'Open a dialog to add a new bookmarks folder.'))
        self.bookmarksAddFolderAct.setWhatsThis(self.tr(
            """<b>Add Folder...</b>"""
            """<p>Open a dialog to add a new bookmarks folder.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.bookmarksAddFolderAct.triggered.connect(
                self.__addBookmarkFolder)
        self.__actions.append(self.bookmarksAddFolderAct)
        
        self.bookmarksAllTabsAct = E5Action(
            self.tr('Bookmark All Tabs'),
            self.tr('Bookmark All Tabs...'),
            0, 0, self, 'webbrowser_bookmark_all_tabs')
        self.bookmarksAllTabsAct.setStatusTip(self.tr(
            'Bookmark all open tabs.'))
        self.bookmarksAllTabsAct.setWhatsThis(self.tr(
            """<b>Bookmark All Tabs...</b>"""
            """<p>Open a dialog to add a new bookmarks folder for"""
            """ all open tabs.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.bookmarksAllTabsAct.triggered.connect(self.bookmarkAll)
        self.__actions.append(self.bookmarksAllTabsAct)
        
        self.whatsThisAct = E5Action(
            self.tr('What\'s This?'),
            UI.PixmapCache.getIcon("whatsThis.png"),
            self.tr('&What\'s This?'),
            QKeySequence(self.tr("Shift+F1", "Help|What's This?'")),
            0, self, 'webbrowser_help_whats_this')
        self.whatsThisAct.setStatusTip(self.tr('Context sensitive help'))
        self.whatsThisAct.setWhatsThis(self.tr(
            """<b>Display context sensitive help</b>"""
            """<p>In What's This? mode, the mouse cursor shows an arrow"""
            """ with a question mark, and you can click on the interface"""
            """ elements to get a short description of what they do and how"""
            """ to use them. In dialogs, this feature can be accessed using"""
            """ the context help button in the titlebar.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.whatsThisAct.triggered.connect(self.__whatsThis)
        self.__actions.append(self.whatsThisAct)
        
        self.aboutAct = E5Action(
            self.tr('About'),
            self.tr('&About'),
            0, 0, self, 'webbrowser_help_about')
        self.aboutAct.setStatusTip(self.tr(
            'Display information about this software'))
        self.aboutAct.setWhatsThis(self.tr(
            """<b>About</b>"""
            """<p>Display some information about this software.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.aboutAct.triggered.connect(self.__about)
        self.__actions.append(self.aboutAct)
        
        self.aboutQtAct = E5Action(
            self.tr('About Qt'),
            self.tr('About &Qt'),
            0, 0, self, 'webbrowser_help_about_qt')
        self.aboutQtAct.setStatusTip(
            self.tr('Display information about the Qt toolkit'))
        self.aboutQtAct.setWhatsThis(self.tr(
            """<b>About Qt</b>"""
            """<p>Display some information about the Qt toolkit.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.aboutQtAct.triggered.connect(self.__aboutQt)
        self.__actions.append(self.aboutQtAct)
        
        self.zoomInAct = E5Action(
            self.tr('Zoom in'),
            UI.PixmapCache.getIcon("zoomIn.png"),
            self.tr('Zoom &in'),
            QKeySequence(self.tr("Ctrl++", "View|Zoom in")),
            QKeySequence(self.tr("Zoom In", "View|Zoom in")),
            self, 'webbrowser_view_zoom_in')
        self.zoomInAct.setStatusTip(self.tr('Zoom in on the web page'))
        self.zoomInAct.setWhatsThis(self.tr(
            """<b>Zoom in</b>"""
            """<p>Zoom in on the web page."""
            """ This makes the web page bigger.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.zoomInAct.triggered.connect(self.__zoomIn)
        self.__actions.append(self.zoomInAct)
        
        self.zoomOutAct = E5Action(
            self.tr('Zoom out'),
            UI.PixmapCache.getIcon("zoomOut.png"),
            self.tr('Zoom &out'),
            QKeySequence(self.tr("Ctrl+-", "View|Zoom out")),
            QKeySequence(self.tr("Zoom Out", "View|Zoom out")),
            self, 'webbrowser_view_zoom_out')
        self.zoomOutAct.setStatusTip(self.tr('Zoom out on the web page'))
        self.zoomOutAct.setWhatsThis(self.tr(
            """<b>Zoom out</b>"""
            """<p>Zoom out on the web page."""
            """ This makes the web page smaller.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.zoomOutAct.triggered.connect(self.__zoomOut)
        self.__actions.append(self.zoomOutAct)
        
        self.zoomResetAct = E5Action(
            self.tr('Zoom reset'),
            UI.PixmapCache.getIcon("zoomReset.png"),
            self.tr('Zoom &reset'),
            QKeySequence(self.tr("Ctrl+0", "View|Zoom reset")),
            0, self, 'webbrowser_view_zoom_reset')
        self.zoomResetAct.setStatusTip(self.tr(
            'Reset the zoom of the web page'))
        self.zoomResetAct.setWhatsThis(self.tr(
            """<b>Zoom reset</b>"""
            """<p>Reset the zoom of the web page. """
            """This sets the zoom factor to 100%.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.zoomResetAct.triggered.connect(self.__zoomReset)
        self.__actions.append(self.zoomResetAct)
        
##        if hasattr(QWebSettings, 'ZoomTextOnly'):
##            self.zoomTextOnlyAct = E5Action(
##                self.tr('Zoom text only'),
##                self.tr('Zoom &text only'),
##                0, 0, self, 'webbrowser_view_zoom_text_only')
##            self.zoomTextOnlyAct.setCheckable(True)
##            self.zoomTextOnlyAct.setStatusTip(self.tr(
##                'Zoom text only; pictures remain constant'))
##            self.zoomTextOnlyAct.setWhatsThis(self.tr(
##                """<b>Zoom text only</b>"""
##                """<p>Zoom text only; pictures remain constant.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.zoomTextOnlyAct.triggered[bool].connect(
##                    self.__zoomTextOnly)
##            self.__actions.append(self.zoomTextOnlyAct)
##        else:
##            self.zoomTextOnlyAct = None
        
        self.pageSourceAct = E5Action(
            self.tr('Show page source'),
            self.tr('Show page source'),
            QKeySequence(self.tr('Ctrl+U')), 0,
            self, 'webbrowser_show_page_source')
        self.pageSourceAct.setStatusTip(self.tr(
            'Show the page source in an editor'))
        self.pageSourceAct.setWhatsThis(self.tr(
            """<b>Show page source</b>"""
            """<p>Show the page source in an editor.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.pageSourceAct.triggered.connect(self.__showPageSource)
        self.__actions.append(self.pageSourceAct)
        self.addAction(self.pageSourceAct)
        
        self.fullScreenAct = E5Action(
            self.tr('Full Screen'),
            UI.PixmapCache.getIcon("windowFullscreen.png"),
            self.tr('&Full Screen'),
            QKeySequence(self.tr('F11')), 0,
            self, 'webbrowser_view_full_scree')
        if not self.__initShortcutsOnly:
            self.fullScreenAct.triggered.connect(self.__viewFullScreen)
        self.__actions.append(self.fullScreenAct)
        self.addAction(self.fullScreenAct)
        
        self.nextTabAct = E5Action(
            self.tr('Show next tab'),
            self.tr('Show next tab'),
            QKeySequence(self.tr('Ctrl+Alt+Tab')), 0,
            self, 'webbrowser_view_next_tab')
        if not self.__initShortcutsOnly:
            self.nextTabAct.triggered.connect(self.__nextTab)
        self.__actions.append(self.nextTabAct)
        self.addAction(self.nextTabAct)
        
        self.prevTabAct = E5Action(
            self.tr('Show previous tab'),
            self.tr('Show previous tab'),
            QKeySequence(self.tr('Shift+Ctrl+Alt+Tab')), 0,
            self, 'webbrowser_view_previous_tab')
        if not self.__initShortcutsOnly:
            self.prevTabAct.triggered.connect(self.__prevTab)
        self.__actions.append(self.prevTabAct)
        self.addAction(self.prevTabAct)
        
        self.switchTabAct = E5Action(
            self.tr('Switch between tabs'),
            self.tr('Switch between tabs'),
            QKeySequence(self.tr('Ctrl+1')), 0,
            self, 'webbrowser_switch_tabs')
        if not self.__initShortcutsOnly:
            self.switchTabAct.triggered.connect(self.__switchTab)
        self.__actions.append(self.switchTabAct)
        self.addAction(self.switchTabAct)
        
        self.prefAct = E5Action(
            self.tr('Preferences'),
            UI.PixmapCache.getIcon("configure.png"),
            self.tr('&Preferences...'), 0, 0, self, 'webbrowser_preferences')
        self.prefAct.setStatusTip(self.tr(
            'Set the prefered configuration'))
        self.prefAct.setWhatsThis(self.tr(
            """<b>Preferences</b>"""
            """<p>Set the configuration items of the application"""
            """ with your prefered values.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.prefAct.triggered.connect(self.__showPreferences)
        self.__actions.append(self.prefAct)
        
        # TODO: Languages
##        self.acceptedLanguagesAct = E5Action(
##            self.tr('Languages'),
##            UI.PixmapCache.getIcon("flag.png"),
##            self.tr('&Languages...'), 0, 0,
##            self, 'webbrowser_accepted_languages')
##        self.acceptedLanguagesAct.setStatusTip(self.tr(
##            'Configure the accepted languages for web pages'))
##        self.acceptedLanguagesAct.setWhatsThis(self.tr(
##            """<b>Languages</b>"""
##            """<p>Configure the accepted languages for web pages.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.acceptedLanguagesAct.triggered.connect(
##                self.__showAcceptedLanguages)
##        self.__actions.append(self.acceptedLanguagesAct)
        
        # TODO: Cookies
##        self.cookiesAct = E5Action(
##            self.tr('Cookies'),
##            UI.PixmapCache.getIcon("cookie.png"),
##            self.tr('C&ookies...'), 0, 0, self, 'webbrowser_cookies')
##        self.cookiesAct.setStatusTip(self.tr(
##            'Configure cookies handling'))
##        self.cookiesAct.setWhatsThis(self.tr(
##            """<b>Cookies</b>"""
##            """<p>Configure cookies handling.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.cookiesAct.triggered.connect(
##                self.__showCookiesConfiguration)
##        self.__actions.append(self.cookiesAct)
        
        self.flashCookiesAct = E5Action(
            self.tr('Flash Cookies'),
            UI.PixmapCache.getIcon("flashCookie.png"),
            self.tr('&Flash Cookies...'), 0, 0, self, 'webbrowser_flash_cookies')
        self.flashCookiesAct.setStatusTip(self.tr(
            'Manage flash cookies'))
        self.flashCookiesAct.setWhatsThis(self.tr(
            """<b>Flash Cookies</b>"""
            """<p>Show a dialog to manage the flash cookies.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.flashCookiesAct.triggered.connect(
                self.__showFlashCookiesManagement)
        self.__actions.append(self.flashCookiesAct)
        
        # TODO: Offline Storage
##        self.offlineStorageAct = E5Action(
##            self.tr('Offline Storage'),
##            UI.PixmapCache.getIcon("preferences-html5.png"),
##            self.tr('Offline &Storage...'), 0, 0,
##            self, 'webbrowser_offline_storage')
##        self.offlineStorageAct.setStatusTip(self.tr(
##            'Configure offline storage'))
##        self.offlineStorageAct.setWhatsThis(self.tr(
##            """<b>Offline Storage</b>"""
##            """<p>Opens a dialog to configure offline storage.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.offlineStorageAct.triggered.connect(
##                self.__showOfflineStorageConfiguration)
##        self.__actions.append(self.offlineStorageAct)
        
        # TODO: PIM
##        self.personalDataAct = E5Action(
##            self.tr('Personal Information'),
##            UI.PixmapCache.getIcon("pim.png"),
##            self.tr('Personal Information...'),
##            0, 0,
##            self, 'webbrowser_personal_information')
##        self.personalDataAct.setStatusTip(self.tr(
##            'Configure personal information for completing form fields'))
##        self.personalDataAct.setWhatsThis(self.tr(
##            """<b>Personal Information...</b>"""
##            """<p>Opens a dialog to configure the personal information"""
##            """ used for completing form fields.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.personalDataAct.triggered.connect(
##                self.__showPersonalInformationDialog)
##        self.__actions.append(self.personalDataAct)
        
        # TODO: GreaseMonkey
##        self.greaseMonkeyAct = E5Action(
##            self.tr('GreaseMonkey Scripts'),
##            UI.PixmapCache.getIcon("greaseMonkey.png"),
##            self.tr('GreaseMonkey Scripts...'),
##            0, 0,
##            self, 'webbrowser_greasemonkey')
##        self.greaseMonkeyAct.setStatusTip(self.tr(
##            'Configure the GreaseMonkey Scripts'))
##        self.greaseMonkeyAct.setWhatsThis(self.tr(
##            """<b>GreaseMonkey Scripts...</b>"""
##            """<p>Opens a dialog to configure the available GreaseMonkey"""
##            """ Scripts.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.greaseMonkeyAct.triggered.connect(
##                self.__showGreaseMonkeyConfigDialog)
##        self.__actions.append(self.greaseMonkeyAct)
        
        self.editMessageFilterAct = E5Action(
            self.tr('Edit Message Filters'),
            UI.PixmapCache.getIcon("warning.png"),
            self.tr('Edit Message Filters...'), 0, 0, self,
            'webbrowser_manage_message_filters')
        self.editMessageFilterAct.setStatusTip(self.tr(
            'Edit the message filters used to suppress unwanted messages'))
        self.editMessageFilterAct.setWhatsThis(self.tr(
            """<b>Edit Message Filters</b>"""
            """<p>Opens a dialog to edit the message filters used to"""
            """ suppress unwanted messages been shown in an error"""
            """ window.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.editMessageFilterAct.triggered.connect(
                E5ErrorMessage.editMessageFilters)
        self.__actions.append(self.editMessageFilterAct)
        
        self.featurePermissionAct = E5Action(
            self.tr('Edit HTML5 Feature Permissions'),
            UI.PixmapCache.getIcon("featurePermission.png"),
            self.tr('Edit HTML5 Feature Permissions...'), 0, 0, self,
            'webbrowser_edit_feature_permissions')
        self.featurePermissionAct.setStatusTip(self.tr(
            'Edit the remembered HTML5 feature permissions'))
        self.featurePermissionAct.setWhatsThis(self.tr(
            """<b>Edit HTML5 Feature Permissions</b>"""
            """<p>Opens a dialog to edit the remembered HTML5"""
            """ feature permissions.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.featurePermissionAct.triggered.connect(
                self.__showFeaturePermissionDialog)
        self.__actions.append(self.featurePermissionAct)
        
        # TODO: re-enable once Qt 5.6 is available
##        if WebBrowserWindow.UseQtHelp or self.__initShortcutsOnly:
##            self.syncTocAct = E5Action(
##                self.tr('Sync with Table of Contents'),
##                UI.PixmapCache.getIcon("syncToc.png"),
##                self.tr('Sync with Table of Contents'),
##                0, 0, self, 'webbrowser_sync_toc')
##            self.syncTocAct.setStatusTip(self.tr(
##                'Synchronizes the table of contents with current page'))
##            self.syncTocAct.setWhatsThis(self.tr(
##                """<b>Sync with Table of Contents</b>"""
##                """<p>Synchronizes the table of contents with current"""
##                """ page.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.syncTocAct.triggered.connect(self.__syncTOC)
##            self.__actions.append(self.syncTocAct)
##            
##            self.showTocAct = E5Action(
##                self.tr('Table of Contents'),
##                self.tr('Table of Contents'),
##                0, 0, self, 'webbrowser_show_toc')
##            self.showTocAct.setStatusTip(self.tr(
##                'Shows the table of contents window'))
##            self.showTocAct.setWhatsThis(self.tr(
##                """<b>Table of Contents</b>"""
##                """<p>Shows the table of contents window.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.showTocAct.triggered.connect(self.__showTocWindow)
##            self.__actions.append(self.showTocAct)
##            
##            self.showIndexAct = E5Action(
##                self.tr('Index'),
##                self.tr('Index'),
##                0, 0, self, 'webbrowser_show_index')
##            self.showIndexAct.setStatusTip(self.tr(
##                'Shows the index window'))
##            self.showIndexAct.setWhatsThis(self.tr(
##                """<b>Index</b>"""
##                """<p>Shows the index window.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.showIndexAct.triggered.connect(self.__showIndexWindow)
##            self.__actions.append(self.showIndexAct)
##            
##            self.showSearchAct = E5Action(
##                self.tr('Search'),
##                self.tr('Search'),
##                0, 0, self, 'webbrowser_show_search')
##            self.showSearchAct.setStatusTip(self.tr(
##                'Shows the search window'))
##            self.showSearchAct.setWhatsThis(self.tr(
##                """<b>Search</b>"""
##                """<p>Shows the search window.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.showSearchAct.triggered.connect(
##                    self.__showSearchWindow)
##            self.__actions.append(self.showSearchAct)
##            
##            self.manageQtHelpDocsAct = E5Action(
##                self.tr('Manage QtHelp Documents'),
##                self.tr('Manage QtHelp &Documents'),
##                0, 0, self, 'webbrowser_qthelp_documents')
##            self.manageQtHelpDocsAct.setStatusTip(self.tr(
##                'Shows a dialog to manage the QtHelp documentation set'))
##            self.manageQtHelpDocsAct.setWhatsThis(self.tr(
##                """<b>Manage QtHelp Documents</b>"""
##                """<p>Shows a dialog to manage the QtHelp documentation"""
##                """ set.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.manageQtHelpDocsAct.triggered.connect(
##                    self.__manageQtHelpDocumentation)
##            self.__actions.append(self.manageQtHelpDocsAct)
##            
##            self.manageQtHelpFiltersAct = E5Action(
##                self.tr('Manage QtHelp Filters'),
##                self.tr('Manage QtHelp &Filters'),
##                0, 0, self, 'webbrowser_qthelp_filters')
##            self.manageQtHelpFiltersAct.setStatusTip(self.tr(
##                'Shows a dialog to manage the QtHelp filters'))
##            self.manageQtHelpFiltersAct.setWhatsThis(self.tr(
##                """<b>Manage QtHelp Filters</b>"""
##                """<p>Shows a dialog to manage the QtHelp filters.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.manageQtHelpFiltersAct.triggered.connect(
##                    self.__manageQtHelpFilters)
##            self.__actions.append(self.manageQtHelpFiltersAct)
##            
##            self.reindexDocumentationAct = E5Action(
##                self.tr('Reindex Documentation'),
##                self.tr('&Reindex Documentation'),
##                0, 0, self, 'webbrowser_qthelp_reindex')
##            self.reindexDocumentationAct.setStatusTip(self.tr(
##                'Reindexes the documentation set'))
##            self.reindexDocumentationAct.setWhatsThis(self.tr(
##                """<b>Reindex Documentation</b>"""
##                """<p>Reindexes the documentation set.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.reindexDocumentationAct.triggered.connect(
##                    self.__searchEngine.reindexDocumentation)
##            self.__actions.append(self.reindexDocumentationAct)
        
        self.clearPrivateDataAct = E5Action(
            self.tr('Clear private data'),
            self.tr('&Clear private data'),
            0, 0,
            self, 'webbrowser_clear_private_data')
        self.clearPrivateDataAct.setStatusTip(self.tr(
            'Clear private data'))
        self.clearPrivateDataAct.setWhatsThis(self.tr(
            """<b>Clear private data</b>"""
            """<p>Clears the private data like browsing history, search"""
            """ history or the favicons database.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.clearPrivateDataAct.triggered.connect(
                self.__clearPrivateData)
        self.__actions.append(self.clearPrivateDataAct)
        
        self.clearIconsAct = E5Action(
            self.tr('Clear icons database'),
            self.tr('Clear &icons database'),
            0, 0,
            self, 'webbrowser_clear_icons_db')
        self.clearIconsAct.setStatusTip(self.tr(
            'Clear the database of favicons'))
        self.clearIconsAct.setWhatsThis(self.tr(
            """<b>Clear icons database</b>"""
            """<p>Clears the database of favicons of previously visited"""
            """ URLs.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.clearIconsAct.triggered.connect(self.__clearIconsDatabase)
        self.__actions.append(self.clearIconsAct)
        
        self.searchEnginesAct = E5Action(
            self.tr('Configure Search Engines'),
            self.tr('Configure Search &Engines...'),
            0, 0,
            self, 'webbrowser_search_engines')
        self.searchEnginesAct.setStatusTip(self.tr(
            'Configure the available search engines'))
        self.searchEnginesAct.setWhatsThis(self.tr(
            """<b>Configure Search Engines...</b>"""
            """<p>Opens a dialog to configure the available search"""
            """ engines.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.searchEnginesAct.triggered.connect(
                self.__showEnginesConfigurationDialog)
        self.__actions.append(self.searchEnginesAct)
        
        self.passwordsAct = E5Action(
            self.tr('Manage Saved Passwords'),
            UI.PixmapCache.getIcon("passwords.png"),
            self.tr('Manage Saved Passwords...'),
            0, 0,
            self, 'webbrowser_manage_passwords')
        self.passwordsAct.setStatusTip(self.tr(
            'Manage the saved passwords'))
        self.passwordsAct.setWhatsThis(self.tr(
            """<b>Manage Saved Passwords...</b>"""
            """<p>Opens a dialog to manage the saved passwords.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.passwordsAct.triggered.connect(self.__showPasswordsDialog)
        self.__actions.append(self.passwordsAct)
        
        # TODO: AdBlock
##        self.adblockAct = E5Action(
##            self.tr('Ad Block'),
##            UI.PixmapCache.getIcon("adBlockPlus.png"),
##            self.tr('&Ad Block...'),
##            0, 0,
##            self, 'webbrowser_adblock')
##        self.adblockAct.setStatusTip(self.tr(
##            'Configure AdBlock subscriptions and rules'))
##        self.adblockAct.setWhatsThis(self.tr(
##            """<b>Ad Block...</b>"""
##            """<p>Opens a dialog to configure AdBlock subscriptions and"""
##            """ rules.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.adblockAct.triggered.connect(self.__showAdBlockDialog)
##        self.__actions.append(self.adblockAct)
        
        # TODO: Click2Flash (?)
##        self.flashblockAct = E5Action(
##            self.tr('ClickToFlash'),
##            UI.PixmapCache.getIcon("flashBlock.png"),
##            self.tr('&ClickToFlash...'),
##            0, 0,
##            self, 'webbrowser_flashblock')
##        self.flashblockAct.setStatusTip(self.tr(
##            'Configure ClickToFlash whitelist'))
##        self.flashblockAct.setWhatsThis(self.tr(
##            """<b>ClickToFlash...</b>"""
##            """<p>Opens a dialog to configure the ClickToFlash"""
##            """ whitelist.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.flashblockAct.triggered.connect(
##                self.__showClickToFlashDialog)
##        self.__actions.append(self.flashblockAct)
        
        # TODO: Certificates
##        if SSL_AVAILABLE:
##            self.certificatesAct = E5Action(
##                self.tr('Manage SSL Certificates'),
##                UI.PixmapCache.getIcon("certificates.png"),
##                self.tr('Manage SSL Certificates...'),
##                0, 0,
##                self, 'webbrowser_manage_certificates')
##            self.certificatesAct.setStatusTip(self.tr(
##                'Manage the saved SSL certificates'))
##            self.certificatesAct.setWhatsThis(self.tr(
##                """<b>Manage SSL Certificates...</b>"""
##                """<p>Opens a dialog to manage the saved SSL"""
##                """ certificates.</p>"""
##            ))
##            if not self.__initShortcutsOnly:
##                self.certificatesAct.triggered.connect(
##                    self.__showCertificatesDialog)
##            self.__actions.append(self.certificatesAct)
        
        # TODO: Network Monitor (?)
##        self.toolsMonitorAct = E5Action(
##            self.tr('Network Monitor'),
##            self.tr('&Network Monitor...'),
##            0, 0,
##            self, 'webbrowser_tools_network_monitor')
##        self.toolsMonitorAct.setStatusTip(self.tr(
##            'Show the network monitor dialog'))
##        self.toolsMonitorAct.setWhatsThis(self.tr(
##            """<b>Network Monitor...</b>"""
##            """<p>Shows the network monitor dialog.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.toolsMonitorAct.triggered.connect(
##                self.__showNetworkMonitor)
##        self.__actions.append(self.toolsMonitorAct)
        
        # TODO: Download Manager
##        self.showDownloadManagerAct = E5Action(
##            self.tr('Downloads'),
##            self.tr('Downloads'),
##            0, 0, self, 'webbrowser_show_downloads')
##        self.showDownloadManagerAct.setStatusTip(self.tr(
##            'Shows the downloads window'))
##        self.showDownloadManagerAct.setWhatsThis(self.tr(
##            """<b>Downloads</b>"""
##            """<p>Shows the downloads window.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.showDownloadManagerAct.triggered.connect(
##                self.__showDownloadsWindow)
##        self.__actions.append(self.showDownloadManagerAct)
        
        # TODO: RSS Feeds Manager
##        self.feedsManagerAct = E5Action(
##            self.tr('RSS Feeds Dialog'),
##            UI.PixmapCache.getIcon("rss22.png"),
##            self.tr('&RSS Feeds Dialog...'),
##            QKeySequence(self.tr("Ctrl+Shift+F", "Help|RSS Feeds Dialog")),
##            0, self, 'webbrowser_rss_feeds')
##        self.feedsManagerAct.setStatusTip(self.tr(
##            'Open a dialog showing the configured RSS feeds.'))
##        self.feedsManagerAct.setWhatsThis(self.tr(
##            """<b>RSS Feeds Dialog...</b>"""
##            """<p>Open a dialog to show the configured RSS feeds."""
##            """ It can be used to mange the feeds and to show their"""
##            """ contents.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.feedsManagerAct.triggered.connect(self.__showFeedsManager)
##        self.__actions.append(self.feedsManagerAct)
        
        # TODO: Site Info
##        self.siteInfoAct = E5Action(
##            self.tr('Siteinfo Dialog'),
##            UI.PixmapCache.getIcon("helpAbout.png"),
##            self.tr('&Siteinfo Dialog...'),
##            QKeySequence(self.tr("Ctrl+Shift+I", "Help|Siteinfo Dialog")),
##            0, self, 'webbrowser_siteinfo')
##        self.siteInfoAct.setStatusTip(self.tr(
##            'Open a dialog showing some information about the current site.'))
##        self.siteInfoAct.setWhatsThis(self.tr(
##            """<b>Siteinfo Dialog...</b>"""
##            """<p>Opens a dialog showing some information about the current"""
##            """ site.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.siteInfoAct.triggered.connect(self.__showSiteinfoDialog)
##        self.__actions.append(self.siteInfoAct)
        
        # TODO: User Agents
##        self.userAgentManagerAct = E5Action(
##            self.tr('Manage User Agent Settings'),
##            self.tr('Manage &User Agent Settings'),
##            0, 0, self, 'webbrowser_user_agent_settings')
##        self.userAgentManagerAct.setStatusTip(self.tr(
##            'Shows a dialog to manage the User Agent settings'))
##        self.userAgentManagerAct.setWhatsThis(self.tr(
##            """<b>Manage User Agent Settings</b>"""
##            """<p>Shows a dialog to manage the User Agent settings.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.userAgentManagerAct.triggered.connect(
##                self.__showUserAgentsDialog)
##        self.__actions.append(self.userAgentManagerAct)
        
        # TODO: Synchronisation
##        self.synchronizationAct = E5Action(
##            self.tr('Synchronize data'),
##            UI.PixmapCache.getIcon("sync.png"),
##            self.tr('&Synchronize Data...'),
##            0, 0, self, 'webbrowser_synchronize_data')
##        self.synchronizationAct.setStatusTip(self.tr(
##            'Shows a dialog to synchronize data via the network'))
##        self.synchronizationAct.setWhatsThis(self.tr(
##            """<b>Synchronize Data...</b>"""
##            """<p>This shows a dialog to synchronize data via the"""
##            """ network.</p>"""
##        ))
##        if not self.__initShortcutsOnly:
##            self.synchronizationAct.triggered.connect(
##                self.__showSyncDialog)
##        self.__actions.append(self.synchronizationAct)
        
        self.zoomValuesAct = E5Action(
            self.tr('Manage Saved Zoom Values'),
            UI.PixmapCache.getIcon("zoomReset.png"),
            self.tr('Manage Saved Zoom Values...'),
            0, 0,
            self, 'webbrowser_manage_zoom_values')
        self.zoomValuesAct.setStatusTip(self.tr(
            'Manage the saved zoom values'))
        self.zoomValuesAct.setWhatsThis(self.tr(
            """<b>Manage Saved Zoom Values...</b>"""
            """<p>Opens a dialog to manage the saved zoom values.</p>"""
        ))
        if not self.__initShortcutsOnly:
            self.zoomValuesAct.triggered.connect(self.__showZoomValuesDialog)
        self.__actions.append(self.zoomValuesAct)
        
        self.backAct.setEnabled(False)
        self.forwardAct.setEnabled(False)
        
        # now read the keyboard shortcuts for the actions
        # TODO: change this to webBrowser
        Shortcuts.readShortcuts(helpViewer=self)
    
    def getActions(self):
        """
        Public method to get a list of all actions.
        
        @return list of all actions (list of E5Action)
        """
        return self.__actions[:]
        
    def __initMenus(self):
        """
        Private method to create the menus.
        """
        mb = self.menuBar()
        
        menu = mb.addMenu(self.tr('&File'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.newTabAct)
        menu.addAction(self.newAct)
        menu.addAction(self.openAct)
        menu.addAction(self.openTabAct)
        menu.addSeparator()
##        menu.addAction(self.saveAsAct)
##        menu.addAction(self.savePageScreenAct)
##        menu.addAction(self.saveVisiblePageScreenAct)
##        menu.addSeparator()
##        menu.addAction(self.printPreviewAct)
##        menu.addAction(self.printAct)
##        menu.addAction(self.printPdfAct)
##        menu.addSeparator()
        menu.addAction(self.closeAct)
        menu.addAction(self.closeAllAct)
        menu.addSeparator()
##        menu.addAction(self.privateBrowsingAct)
##        menu.addSeparator()
        menu.addAction(self.exitAct)
        
        menu = mb.addMenu(self.tr('&Edit'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.undoAct)
        menu.addAction(self.redoAct)
        menu.addSeparator()
        menu.addAction(self.copyAct)
        menu.addAction(self.cutAct)
        menu.addAction(self.pasteAct)
        menu.addSeparator()
        menu.addAction(self.selectAllAct)
        menu.addSeparator()
        menu.addAction(self.findAct)
        menu.addAction(self.findNextAct)
        menu.addAction(self.findPrevAct)
        
        menu = mb.addMenu(self.tr('&View'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.zoomInAct)
        menu.addAction(self.zoomResetAct)
        menu.addAction(self.zoomOutAct)
##        if self.zoomTextOnlyAct is not None:
##            menu.addAction(self.zoomTextOnlyAct)
        menu.addSeparator()
        menu.addAction(self.pageSourceAct)
        menu.addAction(self.fullScreenAct)
        self.__textEncodingMenu = menu.addMenu(
            self.tr("Text Encoding"))
        self.__textEncodingMenu.aboutToShow.connect(
            self.__aboutToShowTextEncodingMenu)
        self.__textEncodingMenu.triggered.connect(self.__setTextEncoding)
        
        menu = mb.addMenu(self.tr('&Go'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.backAct)
        menu.addAction(self.forwardAct)
        menu.addAction(self.homeAct)
        menu.addSeparator()
        menu.addAction(self.stopAct)
        menu.addAction(self.reloadAct)
        # TODO: QtHelp
##        if WebBrowserWindow.UseQtHelp:
##            menu.addSeparator()
##            menu.addAction(self.syncTocAct)
        
        from .History.HistoryMenu import HistoryMenu
        self.historyMenu = HistoryMenu(self, self.__tabWidget)
        self.historyMenu.setTearOffEnabled(True)
        self.historyMenu.setTitle(self.tr('H&istory'))
        self.historyMenu.openUrl.connect(self.openUrl)
        self.historyMenu.newUrl.connect(self.openUrlNewTab)
        mb.addMenu(self.historyMenu)
        
        from .Bookmarks.BookmarksMenu import BookmarksMenuBarMenu
        self.bookmarksMenu = BookmarksMenuBarMenu(self)
        self.bookmarksMenu.setTearOffEnabled(True)
        self.bookmarksMenu.setTitle(self.tr('&Bookmarks'))
        self.bookmarksMenu.openUrl.connect(self.openUrl)
        self.bookmarksMenu.newUrl.connect(self.openUrlNewTab)
        mb.addMenu(self.bookmarksMenu)
        
        bookmarksActions = []
        bookmarksActions.append(self.bookmarksManageAct)
        bookmarksActions.append(self.bookmarksAddAct)
        bookmarksActions.append(self.bookmarksAllTabsAct)
        bookmarksActions.append(self.bookmarksAddFolderAct)
        bookmarksActions.append("--SEPARATOR--")
        bookmarksActions.append(self.importBookmarksAct)
        bookmarksActions.append(self.exportBookmarksAct)
        self.bookmarksMenu.setInitialActions(bookmarksActions)
        
        menu = mb.addMenu(self.tr('&Settings'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.prefAct)
##        menu.addAction(self.acceptedLanguagesAct)
##        menu.addAction(self.cookiesAct)
        menu.addAction(self.flashCookiesAct)
##        menu.addAction(self.offlineStorageAct)
##        menu.addAction(self.personalDataAct)
##        menu.addAction(self.greaseMonkeyAct)
        menu.addAction(self.featurePermissionAct)
##        menu.addSeparator()
        menu.addAction(self.editMessageFilterAct)
        menu.addSeparator()
        menu.addAction(self.searchEnginesAct)
        menu.addSeparator()
        menu.addAction(self.passwordsAct)
##        if SSL_AVAILABLE:
##            menu.addAction(self.certificatesAct)
##        menu.addSeparator()
        menu.addAction(self.zoomValuesAct)
        menu.addSeparator()
##        menu.addAction(self.adblockAct)
##        menu.addAction(self.flashblockAct)
##        menu.addSeparator()
        self.__settingsMenu = menu
        self.__settingsMenu.aboutToShow.connect(
            self.__aboutToShowSettingsMenu)
        
##        from .UserAgent.UserAgentMenu import UserAgentMenu
##        self.__userAgentMenu = UserAgentMenu(self.tr("Global User Agent"))
##        menu.addMenu(self.__userAgentMenu)
##        menu.addAction(self.userAgentManagerAct)
##        menu.addSeparator()
        
##        if WebBrowserWindow.UseQtHelp:
##            menu.addAction(self.manageQtHelpDocsAct)
##            menu.addAction(self.manageQtHelpFiltersAct)
##            menu.addAction(self.reindexDocumentationAct)
##            menu.addSeparator()
        menu.addAction(self.clearPrivateDataAct)
        menu.addAction(self.clearIconsAct)
        
##        menu = mb.addMenu(self.tr("&Tools"))
##        menu.setTearOffEnabled(True)
##        menu.addAction(self.feedsManagerAct)
##        menu.addAction(self.siteInfoAct)
##        menu.addSeparator()
##        menu.addAction(self.synchronizationAct)
##        menu.addSeparator()
##        menu.addAction(self.toolsMonitorAct)
        
        menu = mb.addMenu(self.tr("&Window"))
        menu.setTearOffEnabled(True)
##        menu.addAction(self.showDownloadManagerAct)
##        if WebBrowserWindow.UseQtHelp:
##            menu.addSeparator()
##            menu.addAction(self.showTocAct)
##            menu.addAction(self.showIndexAct)
##            menu.addAction(self.showSearchAct)
##        
##        mb.addSeparator()
        
        menu = mb.addMenu(self.tr('&Help'))
        menu.setTearOffEnabled(True)
        menu.addAction(self.aboutAct)
        menu.addAction(self.aboutQtAct)
        menu.addSeparator()
        menu.addAction(self.whatsThisAct)
    
    def __initToolbars(self):
        """
        Private method to create the toolbars.
        """
        filetb = self.addToolBar(self.tr("File"))
        filetb.setObjectName("FileToolBar")
        filetb.setIconSize(UI.Config.ToolBarIconSize)
        filetb.addAction(self.newTabAct)
        filetb.addAction(self.newAct)
        filetb.addAction(self.openAct)
        filetb.addAction(self.openTabAct)
        filetb.addSeparator()
##        filetb.addAction(self.saveAsAct)
##        filetb.addAction(self.savePageScreenAct)
##        filetb.addSeparator()
##        filetb.addAction(self.printPreviewAct)
##        filetb.addAction(self.printAct)
##        filetb.addAction(self.printPdfAct)
##        filetb.addSeparator()
        filetb.addAction(self.closeAct)
        filetb.addAction(self.exitAct)
        
##        self.savePageScreenMenu = QMenu(self)
##        self.savePageScreenMenu.addAction(self.savePageScreenAct)
##        self.savePageScreenMenu.addAction(self.saveVisiblePageScreenAct)
##        savePageScreenButton = filetb.widgetForAction(self.savePageScreenAct)
##        savePageScreenButton.setMenu(self.savePageScreenMenu)
##        savePageScreenButton.setPopupMode(QToolButton.MenuButtonPopup)
        
        edittb = self.addToolBar(self.tr("Edit"))
        edittb.setObjectName("EditToolBar")
        edittb.setIconSize(UI.Config.ToolBarIconSize)
        edittb.addAction(self.undoAct)
        edittb.addAction(self.redoAct)
        edittb.addSeparator()
        edittb.addAction(self.copyAct)
        edittb.addAction(self.cutAct)
        edittb.addAction(self.pasteAct)
        edittb.addSeparator()
        edittb.addAction(self.selectAllAct)
        
        viewtb = self.addToolBar(self.tr("View"))
        viewtb.setObjectName("ViewToolBar")
        viewtb.setIconSize(UI.Config.ToolBarIconSize)
        viewtb.addAction(self.zoomInAct)
        viewtb.addAction(self.zoomResetAct)
        viewtb.addAction(self.zoomOutAct)
        viewtb.addSeparator()
        viewtb.addAction(self.fullScreenAct)
        
        findtb = self.addToolBar(self.tr("Find"))
        findtb.setObjectName("FindToolBar")
        findtb.setIconSize(UI.Config.ToolBarIconSize)
        findtb.addAction(self.findAct)
        findtb.addAction(self.findNextAct)
        findtb.addAction(self.findPrevAct)
        
##        if WebBrowserWindow.UseQtHelp:
##            filtertb = self.addToolBar(self.tr("Filter"))
##            filtertb.setObjectName("FilterToolBar")
##            self.filterCombo = QComboBox()
##            self.filterCombo.setMinimumWidth(
##                QFontMetrics(QFont()).width("ComboBoxWithEnoughWidth"))
##            filtertb.addWidget(QLabel(self.tr("Filtered by: ")))
##            filtertb.addWidget(self.filterCombo)
##            self.__helpEngine.setupFinished.connect(self.__setupFilterCombo)
##            self.filterCombo.activated[str].connect(
##                self.__filterQtHelpDocumentation)
##            self.__setupFilterCombo()
        
        settingstb = self.addToolBar(self.tr("Settings"))
        settingstb.setObjectName("SettingsToolBar")
        settingstb.setIconSize(UI.Config.ToolBarIconSize)
        settingstb.addAction(self.prefAct)
##        settingstb.addAction(self.acceptedLanguagesAct)
##        settingstb.addAction(self.cookiesAct)
        settingstb.addAction(self.flashCookiesAct)
##        settingstb.addAction(self.offlineStorageAct)
##        settingstb.addAction(self.personalDataAct)
##        settingstb.addAction(self.greaseMonkeyAct)
        settingstb.addAction(self.featurePermissionAct)
        
##        toolstb = self.addToolBar(self.tr("Tools"))
##        toolstb.setObjectName("ToolsToolBar")
##        toolstb.setIconSize(UI.Config.ToolBarIconSize)
##        toolstb.addAction(self.feedsManagerAct)
##        toolstb.addAction(self.siteInfoAct)
##        toolstb.addSeparator()
##        toolstb.addAction(self.synchronizationAct)
        
        helptb = self.addToolBar(self.tr("Help"))
        helptb.setObjectName("HelpToolBar")
        helptb.setIconSize(UI.Config.ToolBarIconSize)
        helptb.addAction(self.whatsThisAct)
        
        self.addToolBarBreak()
        
        gotb = self.addToolBar(self.tr("Go"))
        gotb.setObjectName("GoToolBar")
        gotb.setIconSize(UI.Config.ToolBarIconSize)
        gotb.addAction(self.backAct)
        gotb.addAction(self.forwardAct)
        gotb.addAction(self.reloadAct)
        gotb.addAction(self.stopAct)
        gotb.addAction(self.homeAct)
        gotb.addSeparator()
        
        self.__navigationSplitter = QSplitter(gotb)
        self.__navigationSplitter.addWidget(self.__tabWidget.stackedUrlBar())
        
        from .WebBrowserWebSearchWidget import WebBrowserWebSearchWidget
        self.searchEdit = WebBrowserWebSearchWidget(self)
        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(2)
        sizePolicy.setVerticalStretch(0)
        self.searchEdit.setSizePolicy(sizePolicy)
        self.searchEdit.search.connect(self.__linkActivated)
        self.__navigationSplitter.addWidget(self.searchEdit)
        gotb.addWidget(self.__navigationSplitter)
        
        self.__navigationSplitter.setSizePolicy(
            QSizePolicy.Expanding, QSizePolicy.Maximum)
        self.__navigationSplitter.setCollapsible(0, False)
        
        self.backMenu = QMenu(self)
        self.backMenu.aboutToShow.connect(self.__showBackMenu)
        self.backMenu.triggered.connect(self.__navigationMenuActionTriggered)
        backButton = gotb.widgetForAction(self.backAct)
        backButton.setMenu(self.backMenu)
        backButton.setPopupMode(QToolButton.MenuButtonPopup)
        
        self.forwardMenu = QMenu(self)
        self.forwardMenu.aboutToShow.connect(self.__showForwardMenu)
        self.forwardMenu.triggered.connect(
            self.__navigationMenuActionTriggered)
        forwardButton = gotb.widgetForAction(self.forwardAct)
        forwardButton.setMenu(self.forwardMenu)
        forwardButton.setPopupMode(QToolButton.MenuButtonPopup)
        
        from .Bookmarks.BookmarksToolBar import BookmarksToolBar
        bookmarksModel = self.bookmarksManager().bookmarksModel()
        self.bookmarksToolBar = BookmarksToolBar(self, bookmarksModel, self)
        self.bookmarksToolBar.setObjectName("BookmarksToolBar")
        self.bookmarksToolBar.setIconSize(UI.Config.ToolBarIconSize)
        self.bookmarksToolBar.openUrl.connect(self.openUrl)
        self.bookmarksToolBar.newUrl.connect(self.openUrlNewTab)
        self.addToolBarBreak()
        self.addToolBar(self.bookmarksToolBar)
        
##        self.addToolBarBreak()
##        vttb = self.addToolBar(self.tr("VirusTotal"))
##        vttb.setObjectName("VirusTotalToolBar")
##        vttb.setIconSize(UI.Config.ToolBarIconSize)
##        vttb.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
##        self.virustotalScanCurrentAct = vttb.addAction(
##            UI.PixmapCache.getIcon("virustotal.png"),
##            self.tr("Scan current site"),
##            self.__virusTotalScanCurrentSite)
##        self.virustotalIpReportAct = vttb.addAction(
##            UI.PixmapCache.getIcon("virustotal.png"),
##            self.tr("IP Address Report"),
##            self.__virusTotalIpAddressReport)
##        self.virustotalDomainReportAct = vttb.addAction(
##            UI.PixmapCache.getIcon("virustotal.png"),
##            self.tr("Domain Report"),
##            self.__virusTotalDomainReport)
##        if not Preferences.getWebBrowser("VirusTotalEnabled") or \
##           Preferences.getWebBrowser("VirusTotalServiceKey") == "":
##            self.virustotalScanCurrentAct.setEnabled(False)
##            self.virustotalIpReportAct.setEnabled(False)
##            self.virustotalDomainReportAct.setEnabled(False)
        
    def __nextTab(self):
        """
        Private slot used to show the next tab.
        """
        fwidget = QApplication.focusWidget()
        while fwidget and not hasattr(fwidget, 'nextTab'):
            fwidget = fwidget.parent()
        if fwidget:
            fwidget.nextTab()
        
    def __prevTab(self):
        """
        Private slot used to show the previous tab.
        """
        fwidget = QApplication.focusWidget()
        while fwidget and not hasattr(fwidget, 'prevTab'):
            fwidget = fwidget.parent()
        if fwidget:
            fwidget.prevTab()
        
    def __switchTab(self):
        """
        Private slot used to switch between the current and the previous
        current tab.
        """
        fwidget = QApplication.focusWidget()
        while fwidget and not hasattr(fwidget, 'switchTab'):
            fwidget = fwidget.parent()
        if fwidget:
            fwidget.switchTab()
        
    def __whatsThis(self):
        """
        Private slot called in to enter Whats This mode.
        """
        QWhatsThis.enterWhatsThisMode()
        
    def __titleChanged(self, browser, title):
        """
        Private slot called to handle a change of a browser's title.
        
        @param browser reference to the browser (WebBrowserView)
        @param title new title (string)
        """
        self.historyManager().updateHistoryEntry(
            browser.url().toString(), title)
    
    @pyqtSlot()
    def newTab(self, link=None, requestData=None, addNextTo=None):
        """
        Public slot called to open a new web browser tab.
        
        @param link file to be displayed in the new window (string or QUrl)
        @param requestData page load request data (LoadRequest)
        @param addNextTo reference to the browser to open the tab after
            (HelpBrowser)
        """
        if addNextTo:
            self.__tabWidget.newBrowserAfter(addNextTo, link, requestData)
        else:
            self.__tabWidget.newBrowser(link, requestData)
    
    @pyqtSlot()
    def newWindow(self, link=None):
        """
        Public slot called to open a new web browser window.
        
        @param link file to be displayed in the new window (string or QUrl)
        """
        if link is None:
            linkName = ""
        elif isinstance(link, QUrl):
            linkName = link.toString()
        else:
            linkName = link
        h = WebBrowserWindow(linkName, ".", self.parent(), "webbrowser",
                             self.__fromEric)
        h.show()
    
    # TODO: Private Window
    
    # TODO: check if this is still needed/possible
    def previewer(self):
        """
        Public method to get a reference to the previewer tab.
        
        @return reference to the previewer tab (WebBrowserView)
        """
        if self.__previewer is None:
            if self.__tabWidget.count() != 1 or \
               self.currentBrowser().url().toString() not in [
                    "", "eric:home", "eric:speeddial", "about:blank"]:
                self.newTab()
            self.__previewer = self.currentBrowser()
        self.__tabWidget.setCurrentWidget(self.__previewer)
        return self.__previewer
    
    def __browserClosed(self, browser):
        """
        Private slot handling the closure of a browser tab.
        
        @param browser reference to the browser window (QWidget)
        """
        if browser is self.__previewer:
            self.__previewer = None
    
    def __openFile(self):
        """
        Private slot called to open a file.
        """
        fn = E5FileDialog.getOpenFileName(
            self,
            self.tr("Open File"),
            "",
            self.tr("Help Files (*.html *.htm);;"
                    "PDF Files (*.pdf);;"
                    "CHM Files (*.chm);;"
                    "All Files (*)"
                    ))
        if fn:
            if Utilities.isWindowsPlatform():
                url = "file:///" + Utilities.fromNativeSeparators(fn)
            else:
                url = "file://" + fn
            self.currentBrowser().setSource(QUrl(url))
        
    def __openFileNewTab(self):
        """
        Private slot called to open a file in a new tab.
        """
        fn = E5FileDialog.getOpenFileName(
            self,
            self.tr("Open File"),
            "",
            self.tr("Help Files (*.html *.htm);;"
                    "PDF Files (*.pdf);;"
                    "CHM Files (*.chm);;"
                    "All Files (*)"
                    ))
        if fn:
            if Utilities.isWindowsPlatform():
                url = "file:///" + Utilities.fromNativeSeparators(fn)
            else:
                url = "file://" + fn
            self.newTab(url)
        
##    def __savePageAs(self):
##        """
##        Private slot to save the current page.
##        """
##        browser = self.currentBrowser()
##        if browser is not None:
##            browser.saveAs()
##    
##    @pyqtSlot()
##    def __savePageScreen(self, visibleOnly=False):
##        """
##        Private slot to save the current page as a screen shot.
##        
##        @param visibleOnly flag indicating to just save the visible part
##            of the page (boolean)
##        """
##        from .PageScreenDialog import PageScreenDialog
##        self.__pageScreen = PageScreenDialog(
##            self.currentBrowser(), visibleOnly=visibleOnly)
##        self.__pageScreen.show()
##        
##    def __saveVisiblePageScreen(self):
##        """
##        Private slot to save the visible part of the current page as a screen
##        shot.
##        """
##        self.__savePageScreen(visibleOnly=True)
        
    def __about(self):
        """
        Private slot to show the about information.
        """
        E5MessageBox.about(
            self,
            self.tr("eric6 Web Browser"),
            self.tr(
                """<b>eric6 Web Browser - {0}</b>"""
                """<p>The eric6 Web Browser is a combined help file and HTML"""
                """ browser. It is part of the eric6 development"""
                """ toolset.</p>"""
            ).format(Version))
        
    def __aboutQt(self):
        """
        Private slot to show info about Qt.
        """
        E5MessageBox.aboutQt(self, self.tr("eric6 Web Browser"))

    def setBackwardAvailable(self, b):
        """
        Public slot called when backward references are available.
        
        @param b flag indicating availability of the backwards action (boolean)
        """
        self.backAct.setEnabled(b)
        
    def setForwardAvailable(self, b):
        """
        Public slot called when forward references are available.
        
        @param b flag indicating the availability of the forwards action
            (boolean)
        """
        self.forwardAct.setEnabled(b)
        
    def setLoadingActions(self, b):
        """
        Public slot to set the loading dependent actions.
        
        @param b flag indicating the loading state to consider (boolean)
        """
        self.reloadAct.setEnabled(not b)
        self.stopAct.setEnabled(b)
        
    def __addBookmark(self):
        """
        Private slot called to add the displayed file to the bookmarks.
        """
        view = self.currentBrowser()
        view.addBookmark()
        urlStr = bytes(view.url().toEncoded()).decode()
        title = view.title()
        
        script = Scripts.getAllMetaAttributes()
        view.page().runJavaScript(
            script,
            lambda res: self.__addBookmarkCallback(urlStr, title, res))
    
    def __addBookmarkCallback(self, url, title, res):
        """
        Private callback method of __addBookmark().
        
        @param url URL for the bookmark
        @type str
        @param title title for the bookmark
        @type str
        @param res result of the JavaScript
        @type list
        """
        description = ""
        for meta in res:
            if meta["name"] == "description":
                description = meta["content"]
        
        from .Bookmarks.AddBookmarkDialog import AddBookmarkDialog
        dlg = AddBookmarkDialog()
        dlg.setUrl(url)
        dlg.setTitle(title)
        dlg.setDescription(description)
        menu = self.bookmarksManager().menu()
        idx = self.bookmarksManager().bookmarksModel().nodeIndex(menu)
        dlg.setCurrentIndex(idx)
        dlg.exec_()
        
    def __addBookmarkFolder(self):
        """
        Private slot to add a new bookmarks folder.
        """
        from .Bookmarks.AddBookmarkDialog import AddBookmarkDialog
        dlg = AddBookmarkDialog()
        menu = self.bookmarksManager().menu()
        idx = self.bookmarksManager().bookmarksModel().nodeIndex(menu)
        dlg.setCurrentIndex(idx)
        dlg.setFolder(True)
        dlg.exec_()
        
    def __showBookmarksDialog(self):
        """
        Private slot to show the bookmarks dialog.
        """
        from .Bookmarks.BookmarksDialog import BookmarksDialog
        self.__bookmarksDialog = BookmarksDialog(self)
        self.__bookmarksDialog.openUrl.connect(self.openUrl)
        self.__bookmarksDialog.newUrl.connect(self.openUrlNewTab)
        self.__bookmarksDialog.show()
        
    def bookmarkAll(self):
        """
        Public slot to bookmark all open tabs.
        """
        from .Bookmarks.AddBookmarkDialog import AddBookmarkDialog
        dlg = AddBookmarkDialog()
        dlg.setFolder(True)
        dlg.setTitle(self.tr("Saved Tabs"))
        dlg.exec_()
        
        folder = dlg.addedNode()
        if folder is None:
            return
        
        for view in self.__tabWidget.browsers():
            urlStr = bytes(view.url().toEncoded()).decode()
            title = view.title()
            
            script = Scripts.getAllMetaAttributes()
            view.page().runJavaScript(
                script,
                lambda res: self.__bookmarkAllCallback(folder, urlStr,
                                                       title, res))
    
    def __bookmarkAllCallback(self, folder, url, title, res):
        """
        Private callback method of __addBookmark().
        
        @param folder reference to the bookmarks folder
        @type BookmarkNode
        @param url URL for the bookmark
        @type str
        @param title title for the bookmark
        @type str
        @param res result of the JavaScript
        @type list
        """
        description = ""
        for meta in res:
            if meta["name"] == "description":
                description = meta["content"]
        
        from .Bookmarks.BookmarkNode import BookmarkNode
        bookmark = BookmarkNode(BookmarkNode.Bookmark)
        bookmark.url = url
        bookmark.title = title
        bookmark.desc = description
        
        self.bookmarksManager().addBookmark(folder, bookmark)
        
    def __find(self):
        """
        Private slot to handle the find action.
        
        It opens the search dialog in order to perform the various
        search actions and to collect the various search info.
        """
        self.__searchWidget.showFind()
        
    def __closeAllWindows(self):
        """
        Private slot to close all windows.
        """
        for browser in WebBrowserWindow.BrowserWindows:
            if browser != self:
                browser.close()
        self.close()
        
    def closeEvent(self, e):
        """
        Protected event handler for the close event.
        
        @param e the close event (QCloseEvent)
            <br />This event is simply accepted after the history has been
            saved and all window references have been deleted.
        """
        if not self.__shutdownCalled:
            res = self.shutdown()
            
            if res:
                e.accept()
                self.webBrowserClosed.emit()
            else:
                e.ignore()
        else:
            e.accept()
    
    def shutdown(self):
        """
        Public method to shut down the web browser.
        
        @return flag indicating successful shutdown (boolean)
        """
        if not self.__tabWidget.shallShutDown():
            return False
        
##        if not self.downloadManager().allowQuit():
##            return False
##        
##        self.downloadManager().shutdown()
##        
##        self.__closeNetworkMonitor()
##        
##        self.cookieJar().close()
##        
        self.bookmarksToolBar.setModel(None)
        self.bookmarksManager().close()
        
##        self.historyManager().close()
##        
        self.passwordManager().close()
        
##        self.adBlockManager().close()
##        
##        self.userAgentsManager().close()
##        
##        self.speedDial().close()
##        
##        self.syncManager().close()
        
        ZoomManager.instance().close()
        
        WebIconProvider.instance().close()
##        
##        self.__virusTotal.close()
##        
##        self.flashCookieManager().shutdown()
##        
        self.searchEdit.openSearchManager().close()
        
##        if WebBrowserWindow.UseQtHelp:
##            self.__searchEngine.cancelIndexing()
##            self.__searchEngine.cancelSearching()
##            
##            if self.__helpInstaller:
##                self.__helpInstaller.stop()
##        
        self.searchEdit.saveSearches()
        
        self.__tabWidget.closeAllBrowsers(shutdown=True)
        
        state = self.saveState()
        Preferences.setWebBrowser("WebBrowserState", state)

        if Preferences.getWebBrowser("SaveGeometry"):
            if not self.__isFullScreen():
                Preferences.setGeometry("WebBrowserGeometry",
                                        self.saveGeometry())
        else:
            Preferences.setGeometry("WebBrowserGeometry", QByteArray())
        
        try:
            if self.__fromEric or len(WebBrowserWindow.BrowserWindows) > 1:
                del WebBrowserWindow.BrowserWindows[
                    WebBrowserWindow.BrowserWindows.index(self)]
        except ValueError:
            pass
        
        if not self.__fromEric:
            Preferences.syncPreferences()
        
        self.__shutdownCalled = True
        return True

    def __backward(self):
        """
        Private slot called to handle the backward action.
        """
        self.currentBrowser().backward()
    
    def __forward(self):
        """
        Private slot called to handle the forward action.
        """
        self.currentBrowser().forward()
    
    def __home(self):
        """
        Private slot called to handle the home action.
        """
        self.currentBrowser().home()
    
    def __reload(self):
        """
        Private slot called to handle the reload action.
        """
        self.currentBrowser().reload()
    
    def __stopLoading(self):
        """
        Private slot called to handle loading of the current page.
        """
        self.currentBrowser().stop()
    
    def __zoomValueChanged(self, value):
        """
        Private slot to handle value changes of the zoom widget.
        
        @param value zoom value (integer)
        """
        self.currentBrowser().setZoomValue(value)
    
    def __zoomIn(self):
        """
        Private slot called to handle the zoom in action.
        """
        self.currentBrowser().zoomIn()
        self.__zoomWidget.setValue(self.currentBrowser().zoomValue())
    
    def __zoomOut(self):
        """
        Private slot called to handle the zoom out action.
        """
        self.currentBrowser().zoomOut()
        self.__zoomWidget.setValue(self.currentBrowser().zoomValue())
    
    def __zoomReset(self):
        """
        Private slot called to handle the zoom reset action.
        """
        self.currentBrowser().zoomReset()
        self.__zoomWidget.setValue(self.currentBrowser().zoomValue())
    
##    def __zoomTextOnly(self, textOnly):
##        """
##        Private slot called to handle the zoom text only action.
##        
##        @param textOnly flag indicating to zoom text only (boolean)
##        """
##        QWebSettings.globalSettings().setAttribute(
##            QWebSettings.ZoomTextOnly, textOnly)
##        self.zoomTextOnlyChanged.emit(textOnly)
##    
    def __viewFullScreen(self):
        """
        Private slot called to toggle fullscreen mode.
        """
        if self.__isFullScreen():
            # TODO: Full Screen - web pages need to be toggled separately (Qt 5.6)
            # switch back to normal
            self.setWindowState(self.windowState() & ~Qt.WindowFullScreen)
            self.menuBar().show()
            self.fullScreenAct.setIcon(
                UI.PixmapCache.getIcon("windowFullscreen.png"))
            self.fullScreenAct.setIconText(self.tr('Full Screen'))
        else:
            # switch to full screen
            self.setWindowState(self.windowState() | Qt.WindowFullScreen)
            self.menuBar().hide()
            self.fullScreenAct.setIcon(
                UI.PixmapCache.getIcon("windowRestore.png"))
            self.fullScreenAct.setIconText(self.tr('Restore Window'))
            # TODO: Full Screen - web pages need to be toggled separately (Qt 5.6)
    
    def __isFullScreen(self):
        """
        Private method to determine, if the window is in full screen mode.
        
        @return flag indicating full screen mode (boolean)
        """
        return self.windowState() & Qt.WindowFullScreen
    
    def __copy(self):
        """
        Private slot called to handle the copy action.
        """
        self.currentBrowser().copy()
    
    def __cut(self):
        """
        Private slot called to handle the cut action.
        """
        self.currentBrowser().cut()
    
    def __paste(self):
        """
        Private slot called to handle the paste action.
        """
        self.currentBrowser().paste()
    
    def __undo(self):
        """
        Private slot to handle the undo action.
        """
        self.currentBrowser().undo()
    
    def __redo(self):
        """
        Private slot to handle the redo action.
        """
        self.currentBrowser().redo()
    
    def __selectAll(self):
        """
        Private slot to handle the select all action.
        """
        self.currentBrowser().selectAll()
##    
##    def __privateBrowsing(self):
##        """
##        Private slot to switch private browsing.
##        """
##        settings = QWebSettings.globalSettings()
##        pb = settings.testAttribute(QWebSettings.PrivateBrowsingEnabled)
##        if not pb:
##            txt = self.tr(
##                """<b>Are you sure you want to turn on private"""
##                """ browsing?</b><p>When private browsing is turned on,"""
##                """ web pages are not added to the history, searches"""
##                """ are not added to the list of recent searches and"""
##                """ web site icons and cookies are not stored."""
##                """ HTML5 offline storage will be deactivated."""
##                """ Until you close the window, you can still click"""
##                """ the Back and Forward buttons to return to the"""
##                """ web pages you have opened.</p>""")
##            res = E5MessageBox.yesNo(self, "", txt)
##            if res:
##                self.setPrivateMode(True)
##        else:
##            self.setPrivateMode(False)
##    
##    def setPrivateMode(self, on):
##        """
##        Public method to set the privacy mode.
##        
##        @param on flag indicating the privacy state (boolean)
##        """
##        QWebSettings.globalSettings().setAttribute(
##            QWebSettings.PrivateBrowsingEnabled, on)
##        if on:
##            self.__setIconDatabasePath(False)
##        else:
##            self.__setIconDatabasePath(True)
##        self.privateBrowsingAct.setChecked(on)
##        self.privacyChanged.emit(on)
    
    def isPrivate(self):
        """
        Public method to check the private browsing mode.
        
        @return flag indicating private browsing mode
        @rtype bool
        """
        return self.__isPrivate
    
    def currentBrowser(self):
        """
        Public method to get a reference to the current web browser.
        
        @return reference to the current help browser (WebBrowserView)
        """
        return self.__tabWidget.currentBrowser()
    
    def browserAt(self, index):
        """
        Public method to get a reference to the web browser with the given
        index.
        
        @param index index of the browser to get (integer)
        @return reference to the indexed web browser (WebBrowserView)
        """
        return self.__tabWidget.browserAt(index)
    
    def browsers(self):
        """
        Public method to get a list of references to all web browsers.
        
        @return list of references to web browsers (list of WebBrowserView)
        """
        return self.__tabWidget.browsers()
    
    def __currentChanged(self, index):
        """
        Private slot to handle the currentChanged signal.
        
        @param index index of the current tab (integer)
        """
        if index > -1:
            cb = self.currentBrowser()
            if cb is not None:
                self.setForwardAvailable(cb.isForwardAvailable())
                self.setBackwardAvailable(cb.isBackwardAvailable())
                self.setLoadingActions(cb.isLoading())
                
                # set value of zoom widget
                self.__zoomWidget.setValue(cb.zoomValue())
    
    # TODO: Preferences dialog
    def __showPreferences(self):
        """
        Private slot to set the preferences.
        """
        # TODO: Preferences
##        from Preferences.ConfigurationDialog import ConfigurationDialog
##        dlg = ConfigurationDialog(
##            self, 'Configuration', True, fromEric=self.__fromEric,
##            displayMode=ConfigurationDialog.WebBrowserMode)
##        dlg.preferencesChanged.connect(self.preferencesChanged)
##        dlg.masterPasswordChanged.connect(self.masterPasswordChanged)
##        dlg.show()
##        if self.__lastConfigurationPageName:
##            dlg.showConfigurationPageByName(self.__lastConfigurationPageName)
##        else:
##            dlg.showConfigurationPageByName("empty")
##        dlg.exec_()
##        QApplication.processEvents()
##        if dlg.result() == QDialog.Accepted:
##            dlg.setPreferences()
##            Preferences.syncPreferences()
##            self.preferencesChanged()
##        self.__lastConfigurationPageName = dlg.getConfigurationPageName()
    
    def preferencesChanged(self):
        """
        Public slot to handle a change of preferences.
        """
        if not self.__fromEric:
            self.setStyle(Preferences.getUI("Style"),
                          Preferences.getUI("StyleSheet"))
        
        self.__initWebEngineSettings()
        
        # TODO: NetworkManager
##        self.networkAccessManager().preferencesChanged()
##        
        self.historyManager().preferencesChanged()
        
        self.__tabWidget.preferencesChanged()
        
        self.searchEdit.preferencesChanged()
        
        # TODO: VirusTotal
##        self.__virusTotal.preferencesChanged()
##        if not Preferences.getWebBrowser("VirusTotalEnabled") or \
##           Preferences.getWebBrowser("VirusTotalServiceKey") == "":
##            self.virustotalScanCurrentAct.setEnabled(False)
##            self.virustotalIpReportAct.setEnabled(False)
##            self.virustotalDomainReportAct.setEnabled(False)
##        else:
##            self.virustotalScanCurrentAct.setEnabled(True)
##            self.virustotalIpReportAct.setEnabled(True)
##            self.virustotalDomainReportAct.setEnabled(True)
    
    def masterPasswordChanged(self, oldPassword, newPassword):
        """
        Public slot to handle the change of the master password.
        
        @param oldPassword current master password (string)
        @param newPassword new master password (string)
        """
        from Preferences.ConfigurationDialog import ConfigurationDialog
        self.passwordManager().masterPasswordChanged(oldPassword, newPassword)
        if self.__fromEric and isinstance(self.sender(), ConfigurationDialog):
            # we were called from our local configuration dialog
            Preferences.convertPasswords(oldPassword, newPassword)
            Utilities.crypto.changeRememberedMaster(newPassword)
    
##    def __showAcceptedLanguages(self):
##        """
##        Private slot to configure the accepted languages for web pages.
##        """
##        from .HelpLanguagesDialog import HelpLanguagesDialog
##        dlg = HelpLanguagesDialog(self)
##        dlg.exec_()
##        self.networkAccessManager().languagesChanged()
    
##    def __showCookiesConfiguration(self):
##        """
##        Private slot to configure the cookies handling.
##        """
##        from .CookieJar.CookiesConfigurationDialog import \
##            CookiesConfigurationDialog
##        dlg = CookiesConfigurationDialog(self)
##        dlg.exec_()
    
    def __showFlashCookiesManagement(self):
        """
        Private slot to show the flash cookies management dialog.
        """
        self.flashCookieManager().showFlashCookieManagerDialog()
    
##    def __showOfflineStorageConfiguration(self):
##        """
##        Private slot to configure the offline storage.
##        """
##        from .OfflineStorage.OfflineStorageConfigDialog import \
##            OfflineStorageConfigDialog
##        dlg = OfflineStorageConfigDialog(self)
##        if dlg.exec_() == QDialog.Accepted:
##            dlg.storeData()
##            self.__initWebEngineSettings()
    
    @classmethod
    def setUseQtHelp(cls, use):
        """
        Class method to set the QtHelp usage.
        
        @param use flag indicating usage (boolean)
        """
        if use:
            cls.useQtHelp = use and QTHELP_AVAILABLE
        else:
            cls.useQtHelp = False
    
##    @classmethod
##    def helpEngine(cls):
##        """
##        Class method to get a reference to the help engine.
##        
##        @return reference to the help engine (QHelpEngine)
##        """
##        if cls.useQtHelp:
##            if cls._helpEngine is None:
##                cls._helpEngine = \
##                    QHelpEngine(os.path.join(Utilities.getConfigDir(),
##                                             "web_browser", "eric6help.qhc"))
##            return cls._helpEngine
##        else:
##            return None
##        
    @classmethod
    def networkManager(cls):
        """
        Class method to get a reference to the network manager object.
        
        @return reference to the network access manager (NetworkManager)
        """
        if cls._networkManager is None:
            from .Network.NetworkManager import NetworkManager
            cls._networkManager = NetworkManager()
        
        return cls._networkManager
        
##    @classmethod
##    def cookieJar(cls):
##        """
##        Class method to get a reference to the cookie jar.
##        
##        @return reference to the cookie jar (CookieJar)
##        """
##            from .CookieJar.CookieJar import CookieJar
##            cls._cookieJar = CookieJar()
##        return cls.networkAccessManager().cookieJar()
##        
    def __clearIconsDatabase(self):
        """
        Private slot to clear the icons databse.
        """
        WebIconProvider.instance().clear()
        
    @pyqtSlot(QUrl)
    def __linkActivated(self, url):
        """
        Private slot to handle the selection of a link.
        
        @param url URL to be shown (QUrl)
        """
        if not self.__activating:
            self.__activating = True
##            req = QNetworkRequest(url)
##            req.setRawHeader(b"X-Eric6-UserLoadAction", b"1")
##            self.currentBrowser().setSource(
##                None, (req, QNetworkAccessManager.GetOperation, b""))
            self.currentBrowser().setUrl(url)
            self.__activating = False
        
##    def __linksActivated(self, links, keyword):
##        """
##        Private slot to select a topic to be shown.
##        
##        @param links dictionary with help topic as key (string) and
##            URL as value (QUrl)
##        @param keyword keyword for the link set (string)
##        """
##        if not self.__activating:
##            from .HelpTopicDialog import HelpTopicDialog
##            self.__activating = True
##            dlg = HelpTopicDialog(self, keyword, links)
##            if dlg.exec_() == QDialog.Accepted:
##                self.currentBrowser().setSource(dlg.link())
##            self.__activating = False
##    
    def __activateCurrentBrowser(self):
        """
        Private slot to activate the current browser.
        """
        self.currentBrowser().setFocus()
        
##    def __syncTOC(self):
##        """
##        Private slot to synchronize the TOC with the currently shown page.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            QApplication.setOverrideCursor(Qt.WaitCursor)
##            url = self.currentBrowser().source()
##            self.__showTocWindow()
##            if not self.__tocWindow.syncToContent(url):
##                self.statusBar().showMessage(
##                    self.tr("Could not find an associated content."), 5000)
##            QApplication.restoreOverrideCursor()
##        
##    def __showTocWindow(self):
##        """
##        Private method to show the table of contents window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__activateDock(self.__tocWindow)
##        
##    def __hideTocWindow(self):
##        """
##        Private method to hide the table of contents window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__tocDock.hide()
##        
##    def __showIndexWindow(self):
##        """
##        Private method to show the index window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__activateDock(self.__indexWindow)
##        
##    def __hideIndexWindow(self):
##        """
##        Private method to hide the index window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__indexDock.hide()
##        
##    def __showSearchWindow(self):
##        """
##        Private method to show the search window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__activateDock(self.__searchWindow)
##        
##    def __hideSearchWindow(self):
##        """
##        Private method to hide the search window.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__searchDock.hide()
##        
##    def __activateDock(self, widget):
##        """
##        Private method to activate the dock widget of the given widget.
##        
##        @param widget reference to the widget to be activated (QWidget)
##        """
##        widget.parent().show()
##        widget.parent().raise_()
##        widget.setFocus()
##        
##    def __setupFilterCombo(self):
##        """
##        Private slot to setup the filter combo box.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            curFilter = self.filterCombo.currentText()
##            if not curFilter:
##                curFilter = self.__helpEngine.currentFilter()
##            self.filterCombo.clear()
##            self.filterCombo.addItems(self.__helpEngine.customFilters())
##            idx = self.filterCombo.findText(curFilter)
##            if idx < 0:
##                idx = 0
##            self.filterCombo.setCurrentIndex(idx)
##        
##    def __filterQtHelpDocumentation(self, customFilter):
##        """
##        Private slot to filter the QtHelp documentation.
##        
##        @param customFilter name of filter to be applied (string)
##        """
##        if self.__helpEngine:
##            self.__helpEngine.setCurrentFilter(customFilter)
##        
##    def __manageQtHelpDocumentation(self):
##        """
##        Private slot to manage the QtHelp documentation database.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            from .QtHelpDocumentationDialog import QtHelpDocumentationDialog
##            dlg = QtHelpDocumentationDialog(self.__helpEngine, self)
##            dlg.exec_()
##            if dlg.hasChanges():
##                for i in sorted(dlg.getTabsToClose(), reverse=True):
##                    self.__tabWidget.closeBrowserAt(i)
##                self.__helpEngine.setupData()
##        
    def getSourceFileList(self):
        """
        Public method to get a list of all opened source files.
        
        @return dictionary with tab id as key and host/namespace as value
        """
        return self.__tabWidget.getSourceFileList()
        
##    def __manageQtHelpFilters(self):
##        """
##        Private slot to manage the QtHelp filters.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            from .QtHelpFiltersDialog import QtHelpFiltersDialog
##            dlg = QtHelpFiltersDialog(self.__helpEngine, self)
##            dlg.exec_()
##        
##    def __indexingStarted(self):
##        """
##        Private slot to handle the start of the indexing process.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__indexing = True
##            if self.__indexingProgress is None:
##                self.__indexingProgress = QWidget()
##                layout = QHBoxLayout(self.__indexingProgress)
##                layout.setContentsMargins(0, 0, 0, 0)
##                sizePolicy = QSizePolicy(QSizePolicy.Preferred,
##                                         QSizePolicy.Maximum)
##                
##                label = QLabel(self.tr("Updating search index"))
##                label.setSizePolicy(sizePolicy)
##                layout.addWidget(label)
##                
##                progressBar = QProgressBar()
##                progressBar.setRange(0, 0)
##                progressBar.setTextVisible(False)
##                progressBar.setFixedHeight(16)
##                progressBar.setSizePolicy(sizePolicy)
##                layout.addWidget(progressBar)
##                
##                self.statusBar().insertPermanentWidget(
##                    0, self.__indexingProgress)
##        
##    def __indexingFinished(self):
##        """
##        Private slot to handle the start of the indexing process.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.statusBar().removeWidget(self.__indexingProgress)
##            self.__indexingProgress = None
##            self.__indexing = False
##            if self.__searchWord is not None:
##                self.__searchForWord()
##        
##    def __searchForWord(self):
##        """
##        Private slot to search for a word.
##        """
##        if WebBrowserWindow.UseQtHelp and not self.__indexing and \
##                self.__searchWord is not None:
##            self.__searchDock.show()
##            self.__searchDock.raise_()
##            query = QHelpSearchQuery(QHelpSearchQuery.DEFAULT,
##                                     [self.__searchWord])
##            self.__searchEngine.search([query])
##            self.__searchWord = None
##        
##    def search(self, word):
##        """
##        Public method to search for a word.
##        
##        @param word word to search for (string)
##        """
##        if WebBrowserWindow.UseQtHelp:
##            self.__searchWord = word
##            self.__searchForWord()
##        
##    def __removeOldDocumentation(self):
##        """
##        Private slot to remove non-existing documentation from the help engine.
##        """
##        for namespace in self.__helpEngine.registeredDocumentations():
##            docFile = self.__helpEngine.documentationFileName(namespace)
##            if not os.path.exists(docFile):
##                self.__helpEngine.unregisterDocumentation(namespace)
##        
##    def __lookForNewDocumentation(self):
##        """
##        Private slot to look for new documentation to be loaded into the
##        help database.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            from .HelpDocsInstaller import HelpDocsInstaller
##            self.__helpInstaller = HelpDocsInstaller(
##                self.__helpEngine.collectionFile())
##            self.__helpInstaller.errorMessage.connect(
##                self.__showInstallationError)
##            self.__helpInstaller.docsInstalled.connect(self.__docsInstalled)
##            
##            self.statusBar().showMessage(
##                self.tr("Looking for Documentation..."))
##            self.__helpInstaller.installDocs()
##        
##    def __showInstallationError(self, message):
##        """
##        Private slot to show installation errors.
##        
##        @param message message to be shown (string)
##        """
##        E5MessageBox.warning(
##            self,
##            self.tr("eric6 Web Browser"),
##            message)
##        
##    def __docsInstalled(self, installed):
##        """
##        Private slot handling the end of documentation installation.
##        
##        @param installed flag indicating that documents were installed
##            (boolean)
##        """
##        if WebBrowserWindow.UseQtHelp:
##            if installed:
##                self.__helpEngine.setupData()
##            self.statusBar().clearMessage()
##        
##    def __initHelpDb(self):
##        """
##        Private slot to initialize the documentation database.
##        """
##        if WebBrowserWindow.UseQtHelp:
##            if not self.__helpEngine.setupData():
##                return
##            
##            unfiltered = self.tr("Unfiltered")
##            if unfiltered not in self.__helpEngine.customFilters():
##                hc = QHelpEngineCore(self.__helpEngine.collectionFile())
##                hc.setupData()
##                hc.addCustomFilter(unfiltered, [])
##                hc = None
##                del hc
##                
##                self.__helpEngine.blockSignals(True)
##                self.__helpEngine.setCurrentFilter(unfiltered)
##                self.__helpEngine.blockSignals(False)
##                self.__helpEngine.setupData()
##        
##    def __warning(self, msg):
##        """
##        Private slot handling warnings from the help engine.
##        
##        @param msg message sent by the help  engine (string)
##        """
##        E5MessageBox.warning(
##            self,
##            self.tr("Help Engine"), msg)
##        
    def __aboutToShowSettingsMenu(self):
        """
        Private slot to show the Settings menu.
        """
        self.editMessageFilterAct.setEnabled(
            E5ErrorMessage.messageHandlerInstalled())
        
    def __showBackMenu(self):
        """
        Private slot showing the backwards navigation menu.
        """
        self.backMenu.clear()
        history = self.currentBrowser().history()
        historyCount = history.count()
        backItems = history.backItems(historyCount)
        for index in range(len(backItems) - 1, -1, -1):
            item = backItems[index]
            act = QAction(self)
            act.setData(-1 * (index + 1))
            icon = WebBrowserWindow.icon(item.url())
            act.setIcon(icon)
            act.setText(item.title())
            self.backMenu.addAction(act)
        
    def __showForwardMenu(self):
        """
        Private slot showing the forwards navigation menu.
        """
        self.forwardMenu.clear()
        history = self.currentBrowser().history()
        historyCount = history.count()
        forwardItems = history.forwardItems(historyCount)
        for index in range(len(forwardItems)):
            item = forwardItems[index]
            act = QAction(self)
            act.setData(index + 1)
            icon = WebBrowserWindow.icon(item.url())
            act.setIcon(icon)
            act.setText(item.title())
            self.forwardMenu.addAction(act)
        
    def __navigationMenuActionTriggered(self, act):
        """
        Private slot to go to the selected page.
        
        @param act reference to the action selected in the navigation menu
            (QAction)
        """
        offset = act.data()
        history = self.currentBrowser().history()
        historyCount = history.count()
        if offset < 0:
            # go back
            history.goToItem(history.backItems(historyCount)[-1 * offset - 1])
        else:
            # go forward
            history.goToItem(history.forwardItems(historyCount)[offset - 1])
        
    def __clearPrivateData(self):
        """
        Private slot to clear the private data.
        """
        from .WebBrowserClearPrivateDataDialog import \
            WebBrowserClearPrivateDataDialog
        dlg = WebBrowserClearPrivateDataDialog(self)
        if dlg.exec_() == QDialog.Accepted:
            # browsing history, search history, favicons, disk cache, cookies,
            # passwords, web databases, downloads, Flash cookies
            (history, searches, favicons, cache, cookies,
             passwords, databases, downloads, flashCookies, zoomValues,
             historyPeriod) = dlg.getData()
            if history:
                self.historyManager().clear(historyPeriod)
                self.__tabWidget.clearClosedTabsList()
            if searches:
                self.searchEdit.clear()
            # TODO: Downloads
##            if downloads:
##                self.downloadManager().cleanup()
##                self.downloadManager().hide()
            if favicons:
                self.__clearIconsDatabase()
            # TODO: Cache Cleaning
##            if cache:
##                try:
##                    self.networkAccessManager().cache().clear()
##                except AttributeError:
##                    pass
            # TODO: Cookies
##            if cookies:
##                self.cookieJar().clear()
            if passwords:
                self.passwordManager().clear()
            # TODO: Web Databases
##            if databases:
##                if hasattr(QWebDatabase, "removeAllDatabases"):
##                    QWebDatabase.removeAllDatabases()
##                else:
##                    for securityOrigin in QWebSecurityOrigin.allOrigins():
##                        for database in securityOrigin.databases():
##                            QWebDatabase.removeDatabase(database)
            if flashCookies:
                self.flashCookieManager().removeAllCookies()
            if zoomValues:
                ZoomManager.instance().clear()
        
    def __showEnginesConfigurationDialog(self):
        """
        Private slot to show the search engines configuration dialog.
        """
        from .OpenSearch.OpenSearchDialog import OpenSearchDialog
        
        dlg = OpenSearchDialog(self)
        dlg.exec_()
        
    def searchEnginesAction(self):
        """
        Public method to get a reference to the search engines configuration
        action.
        
        @return reference to the search engines configuration action (QAction)
        """
        return self.searchEnginesAct
        
    def __showPasswordsDialog(self):
        """
        Private slot to show the passwords management dialog.
        """
        from .Passwords.PasswordsDialog import PasswordsDialog
        
        dlg = PasswordsDialog(self)
        dlg.exec_()
        
##    def __showCertificatesDialog(self):
##        """
##        Private slot to show the certificates management dialog.
##        """
##        from E5Network.E5SslCertificatesDialog import E5SslCertificatesDialog
##        
##        dlg = E5SslCertificatesDialog(self)
##        dlg.exec_()
##        
##    def __showAdBlockDialog(self):
##        """
##        Private slot to show the AdBlock configuration dialog.
##        """
##        self.adBlockManager().showDialog()
##        
##    def __showClickToFlashDialog(self):
##        """
##        Private slot to open the ClickToFlash whitelist configuration dialog.
##        """
##        from .HelpBrowserWV import HelpWebPage
##        HelpWebPage.webPluginFactory().plugin("ClickToFlash").configure()
##        
##    def __showPersonalInformationDialog(self):
##        """
##        Private slot to show the Personal Information configuration dialog.
##        """
##        self.personalInformationManager().showConfigurationDialog()
##        
##    def __showGreaseMonkeyConfigDialog(self):
##        """
##        Private slot to show the GreaseMonkey scripts configuration dialog.
##        """
##        self.greaseMonkeyManager().showConfigurationDialog()
##        
    def __showFeaturePermissionDialog(self):
        """
        Private slot to show the feature permission dialog.
        """
        self.featurePermissionManager().showFeaturePermissionsDialog()
        
    def __showZoomValuesDialog(self):
        """
        Private slot to show the zoom values management dialog.
        """
        from .ZoomManager.ZoomValuesDialog import ZoomValuesDialog
        
        dlg = ZoomValuesDialog(self)
        dlg.exec_()
        
##    def __showNetworkMonitor(self):
##        """
##        Private slot to show the network monitor dialog.
##        """
##        from E5Network.E5NetworkMonitor import E5NetworkMonitor
##        monitor = E5NetworkMonitor.instance(self.networkAccessManager())
##        monitor.show()
##        
##    def __showDownloadsWindow(self):
##        """
##        Private slot to show the downloads dialog.
##        """
##        self.downloadManager().show()
##        
##    def __closeNetworkMonitor(self):
##        """
##        Private slot to close the network monitor dialog.
##        """
##        from E5Network.E5NetworkMonitor import E5NetworkMonitor
##        E5NetworkMonitor.closeMonitor()
##        
    def __showPageSource(self):
        """
        Private slot to show the source of the current page in an editor.
        """
        self.currentBrowser().page().toHtml(self.__showPageSourceCallback)
        
    def __showPageSourceCallback(self, src):
        """
        Private method to show the source of the current page in an editor.
        
        @param src source of the web page
        @type str
        """
        from QScintilla.MiniEditor import MiniEditor
        editor = MiniEditor(parent=self)
        editor.setText(src, "Html")
        editor.setLanguage("dummy.html")
        editor.show()
    
    @classmethod
    def icon(cls, url):
        """
        Class method to get the icon for an URL.
        
        @param url URL to get icon for (QUrl)
        @return icon for the URL (QIcon)
        """
        return WebIconProvider.instance().iconForUrl(url)

    @classmethod
    def bookmarksManager(cls):
        """
        Class method to get a reference to the bookmarks manager.
        
        @return reference to the bookmarks manager (BookmarksManager)
        """
        if cls._bookmarksManager is None:
            from .Bookmarks.BookmarksManager import BookmarksManager
            cls._bookmarksManager = BookmarksManager()
        
        return cls._bookmarksManager
    
    def openUrl(self, url, title):
        """
        Public slot to load a URL in the current tab.
        
        @param url URL to be opened (QUrl)
        @param title title of the bookmark (string)
        """
        self.__linkActivated(url)
    
    def openUrlNewTab(self, url, title):
        """
        Public slot to load a URL in a new tab.
        
        @param url URL to be opened (QUrl)
        @param title title of the bookmark (string)
        """
##        req = QNetworkRequest(url)
##        req.setRawHeader(b"X-Eric6-UserLoadAction", b"1")
##        self.newTab(None, (req, QNetworkAccessManager.GetOperation, b""))
        self.newTab(url)
    
    @classmethod
    def historyManager(cls):
        """
        Class method to get a reference to the history manager.
        
        @return reference to the history manager (HistoryManager)
        """
        if cls._historyManager is None:
            from .History.HistoryManager import HistoryManager
            cls._historyManager = HistoryManager()
        
        return cls._historyManager
        
    @classmethod
    def passwordManager(cls):
        """
        Class method to get a reference to the password manager.
        
        @return reference to the password manager (PasswordManager)
        """
        if cls._passwordManager is None:
            from .Passwords.PasswordManager import PasswordManager
            cls._passwordManager = PasswordManager()
        
        return cls._passwordManager
        
##    @classmethod
##    def adBlockManager(cls):
##        """
##        Class method to get a reference to the AdBlock manager.
##        
##        @return reference to the AdBlock manager (AdBlockManager)
##        """
##        if cls._adblockManager is None:
##            from .AdBlock.AdBlockManager import AdBlockManager
##            cls._adblockManager = AdBlockManager()
##        
##        return cls._adblockManager
##    
##    def adBlockIcon(self):
##        """
##        Public method to get a reference to the AdBlock icon.
##        
##        @return reference to the AdBlock icon (AdBlockIcon)
##        """
##        return self.__adBlockIcon
##    
##    @classmethod
##    def downloadManager(cls):
##        """
##        Class method to get a reference to the download manager.
##        
##        @return reference to the download manager (DownloadManager)
##        """
##        if cls._downloadManager is None:
##            from .Download.DownloadManager import DownloadManager
##            cls._downloadManager = DownloadManager()
##        
##        return cls._downloadManager
##        
##    @classmethod
##    def personalInformationManager(cls):
##        """
##        Class method to get a reference to the personal information manager.
##        
##        @return reference to the personal information manager
##            (PersonalInformationManager)
##        """
##        if cls._personalInformationManager is None:
##            from .PersonalInformationManager.PersonalInformationManager \
##                import PersonalInformationManager
##            cls._personalInformationManager = PersonalInformationManager()
##        
##        return cls._personalInformationManager
##        
##    @classmethod
##    def greaseMonkeyManager(cls):
##        """
##        Class method to get a reference to the GreaseMonkey manager.
##        
##        @return reference to the GreaseMonkey manager (GreaseMonkeyManager)
##        """
##        if cls._greaseMonkeyManager is None:
##            from .GreaseMonkey.GreaseMonkeyManager import GreaseMonkeyManager
##            cls._greaseMonkeyManager = GreaseMonkeyManager()
##        
##        return cls._greaseMonkeyManager
##        
    @classmethod
    def featurePermissionManager(cls):
        """
        Class method to get a reference to the feature permission manager.
        
        @return reference to the feature permission manager
        @rtype FeaturePermissionManager
        """
        if cls._featurePermissionManager is None:
            from .FeaturePermissions.FeaturePermissionManager import \
                FeaturePermissionManager
            cls._featurePermissionManager = FeaturePermissionManager()
        
        return cls._featurePermissionManager
        
    @classmethod
    def flashCookieManager(cls):
        """
        Class method to get a reference to the flash cookies manager.
        
        @return reference to the flash cookies manager
        @rtype FlashCookieManager
        """
        if cls._flashCookieManager is None:
            from .FlashCookieManager.FlashCookieManager import \
                FlashCookieManager
            cls._flashCookieManager = FlashCookieManager()
        
        return cls._flashCookieManager
        
    @classmethod
    def mainWindow(cls):
        """
        Class method to get a reference to the main window.
        
        @return reference to the main window (WebBrowserWindow)
        """
        if cls.BrowserWindows:
            return cls.BrowserWindows[0]
        else:
            return None
    
    @classmethod
    def mainWindows(cls):
        """
        Class method to get references to all main windows.
        
        @return references to all main window (list of WebBrowserWindow)
        """
        return cls.BrowserWindows
    
    def __appFocusChanged(self, old, now):
        """
        Private slot to handle a change of the focus.
        
        @param old reference to the widget, that lost focus (QWidget or None)
        @param now reference to the widget having the focus (QWidget or None)
        """
        if isinstance(now, WebBrowserWindow):
            self.__lastActiveWindow = now
    
    def getWindow(self):
        """
        Public method to get a reference to the most recent active
        web browser window.
        
        @return reference to most recent web browser window
        @rtype WebBrowserWindow
        """
        if self.__lastActiveWindow:
            return self.__lastActiveWindow
        
        return self.mainWindow()
    
    def openSearchManager(self):
        """
        Public method to get a reference to the opensearch manager object.
        
        @return reference to the opensearch manager object (OpenSearchManager)
        """
        return self.searchEdit.openSearchManager()
    
    def __aboutToShowTextEncodingMenu(self):
        """
        Private slot to populate the text encoding menu.
        """
        self.__textEncodingMenu.clear()
        
        codecs = []
        for codec in QTextCodec.availableCodecs():
            codecs.append(str(codec, encoding="utf-8").lower())
        codecs.sort()
        
        defaultTextEncoding = \
            QWebEngineSettings.globalSettings().defaultTextEncoding().lower()
        if defaultTextEncoding in codecs:
            currentCodec = defaultTextEncoding
        else:
            currentCodec = ""
        
        isDefaultEncodingUsed = True
        isoMenu = QMenu(self.tr("ISO"), self.__textEncodingMenu)
        winMenu = QMenu(self.tr("Windows"), self.__textEncodingMenu)
        isciiMenu = QMenu(self.tr("ISCII"), self.__textEncodingMenu)
        uniMenu = QMenu(self.tr("Unicode"), self.__textEncodingMenu)
        otherMenu = QMenu(self.tr("Other"), self.__textEncodingMenu)
        ibmMenu = QMenu(self.tr("IBM"), self.__textEncodingMenu)
        
        for codec in codecs:
            if codec.startswith(("iso", "latin", "csisolatin")):
                act = isoMenu.addAction(codec)
            elif codec.startswith(("windows", "cp1")):
                act = winMenu.addAction(codec)
            elif codec.startswith("iscii"):
                act = isciiMenu.addAction(codec)
            elif codec.startswith("utf"):
                act = uniMenu.addAction(codec)
            elif codec.startswith(("ibm", "csibm", "cp")):
                act = ibmMenu.addAction(codec)
            else:
                act = otherMenu.addAction(codec)
            
            act.setData(codec)
            act.setCheckable(True)
            if currentCodec == codec:
                act.setChecked(True)
                isDefaultEncodingUsed = False
        
        act = self.__textEncodingMenu.addAction(
            self.tr("Default Encoding"))
        act.setData("")
        act.setCheckable(True)
        act.setChecked(isDefaultEncodingUsed)
        self.__textEncodingMenu.addMenu(uniMenu)
        self.__textEncodingMenu.addMenu(isoMenu)
        self.__textEncodingMenu.addMenu(winMenu)
        self.__textEncodingMenu.addMenu(ibmMenu)
        self.__textEncodingMenu.addMenu(isciiMenu)
        self.__textEncodingMenu.addMenu(otherMenu)
    
    def __setTextEncoding(self, act):
        """
        Private slot to set the selected text encoding as the default for
        this session.
        
        @param act reference to the selected action (QAction)
        """
        codec = act.data()
        if codec == "":
            QWebEngineSettings.globalSettings().setDefaultTextEncoding("")
        else:
            QWebEngineSettings.globalSettings().setDefaultTextEncoding(codec)
    
    def eventMouseButtons(self):
        """
        Public method to get the last recorded mouse buttons.
        
        @return mouse buttons (Qt.MouseButtons)
        """
        return self.__eventMouseButtons
    
    def eventKeyboardModifiers(self):
        """
        Public method to get the last recorded keyboard modifiers.
        
        @return keyboard modifiers (Qt.KeyboardModifiers)
        """
        return self.__eventKeyboardModifiers
    
    def setEventMouseButtons(self, buttons):
        """
        Public method to record mouse buttons.
        
        @param buttons mouse buttons to record (Qt.MouseButtons)
        """
        self.__eventMouseButtons = buttons
    
    def setEventKeyboardModifiers(self, modifiers):
        """
        Public method to record keyboard modifiers.
        
        @param modifiers keyboard modifiers to record (Qt.KeyboardModifiers)
        """
        self.__eventKeyboardModifiers = modifiers
    
    def mousePressEvent(self, evt):
        """
        Protected method called by a mouse press event.
        
        @param evt reference to the mouse event (QMouseEvent)
        """
        if evt.button() == Qt.XButton1:
            self.currentBrowser().triggerPageAction(QWebEnginePage.Back)
        elif evt.button() == Qt.XButton2:
            self.currentBrowser().triggerPageAction(QWebEnginePage.Forward)
        else:
            super(WebBrowserWindow, self).mousePressEvent(evt)

##    @classmethod
##    def feedsManager(cls):
##        """
##        Class method to get a reference to the RSS feeds manager.
##        
##        @return reference to the RSS feeds manager (FeedsManager)
##        """
##        if cls._feedsManager is None:
##            from .Feeds.FeedsManager import FeedsManager
##            cls._feedsManager = FeedsManager()
##        
##        return cls._feedsManager
##    
##    def __showFeedsManager(self):
##        """
##        Private slot to show the feeds manager dialog.
##        """
##        feedsManager = self.feedsManager()
##        feedsManager.openUrl.connect(self.openUrl)
##        feedsManager.newUrl.connect(self.openUrlNewTab)
##        feedsManager.rejected.connect(self.__feedsManagerClosed)
##        feedsManager.show()
##    
##    def __feedsManagerClosed(self):
##        """
##        Private slot to handle closing the feeds manager dialog.
##        """
##        feedsManager = self.sender()
##        feedsManager.openUrl.disconnect(self.openUrl)
##        feedsManager.newUrl.disconnect(self.openUrlNewTab)
##        feedsManager.rejected.disconnect(self.__feedsManagerClosed)
##    
##    def __showSiteinfoDialog(self):
##        """
##        Private slot to show the site info dialog.
##        """
##        from .SiteInfo.SiteInfoDialog import SiteInfoDialog
##        self.__siteinfoDialog = SiteInfoDialog(self.currentBrowser(), self)
##        self.__siteinfoDialog.show()
##
##    @classmethod
##    def userAgentsManager(cls):
##        """
##        Class method to get a reference to the user agents manager.
##        
##        @return reference to the user agents manager (UserAgentManager)
##        """
##        if cls._userAgentsManager is None:
##            from .UserAgent.UserAgentManager import UserAgentManager
##            cls._userAgentsManager = UserAgentManager()
##        
##        return cls._userAgentsManager
##    
##    def __showUserAgentsDialog(self):
##        """
##        Private slot to show the user agents management dialog.
##        """
##        from .UserAgent.UserAgentsDialog import UserAgentsDialog
##        
##        dlg = UserAgentsDialog(self)
##        dlg.exec_()
##    
##    @classmethod
##    def syncManager(cls):
##        """
##        Class method to get a reference to the data synchronization manager.
##        
##        @return reference to the data synchronization manager (SyncManager)
##        """
##        if cls._syncManager is None:
##            from .Sync.SyncManager import SyncManager
##            cls._syncManager = SyncManager()
##        
##        return cls._syncManager
##    
##    def __showSyncDialog(self):
##        """
##        Private slot to show the synchronization dialog.
##        """
##        self.syncManager().showSyncDialog()
##    
##    @classmethod
##    def speedDial(cls):
##        """
##        Class methdo to get a reference to the speed dial.
##        
##        @return reference to the speed dial (SpeedDial)
##        """
##        if cls._speedDial is None:
##            from .SpeedDial.SpeedDial import SpeedDial
##            cls._speedDial = SpeedDial()
##        
##        return cls._speedDial
##    
    def keyPressEvent(self, evt):
        """
        Protected method to handle key presses.
        
        @param evt reference to the key press event (QKeyEvent)
        """
        number = -1
        key = evt.key()
        
        if key == Qt.Key_1:
            number = 1
        elif key == Qt.Key_2:
            number = 2
        elif key == Qt.Key_3:
            number = 3
        elif key == Qt.Key_4:
            number = 4
        elif key == Qt.Key_5:
            number = 5
        elif key == Qt.Key_6:
            number = 6
        elif key == Qt.Key_7:
            number = 7
        elif key == Qt.Key_8:
            number = 8
        elif key == Qt.Key_9:
            number = 9
        elif key == Qt.Key_0:
            number = 10
        
        if number != -1:
            if evt.modifiers() == Qt.KeyboardModifiers(Qt.AltModifier):
                if number == 10:
                    number = self.__tabWidget.count()
                self.__tabWidget.setCurrentIndex(number - 1)
                return
##            
##            if evt.modifiers() == Qt.KeyboardModifiers(Qt.MetaModifier):
##                url = self.speedDial().urlForShortcut(number - 1)
##                if url.isValid():
##                    self.__linkActivated(url)
##                    return
        
        super(WebBrowserWindow, self).keyPressEvent(evt)
    
##    ###########################################################################
##    ## Interface to VirusTotal below                                         ##
##    ###########################################################################
##    
##    def __virusTotalScanCurrentSite(self):
##        """
##        Private slot to ask VirusTotal for a scan of the URL of the current
##        browser.
##        """
##        cb = self.currentBrowser()
##        if cb is not None:
##            url = cb.url()
##            if url.scheme() in ["http", "https", "ftp"]:
##                self.requestVirusTotalScan(url)
##    
##    def requestVirusTotalScan(self, url):
##        """
##        Public method to submit a request to scan an URL by VirusTotal.
##        
##        @param url URL to be scanned (QUrl)
##        """
##        self.__virusTotal.submitUrl(url)
##    
##    def __virusTotalSubmitUrlError(self, msg):
##        """
##        Private slot to handle an URL scan submission error.
##        
##        @param msg error message (str)
##        """
##        E5MessageBox.critical(
##            self,
##            self.tr("VirusTotal Scan"),
##            self.tr("""<p>The VirusTotal scan could not be"""
##                    """ scheduled.<p>\n<p>Reason: {0}</p>""").format(msg))
##    
##    def __virusTotalUrlScanReport(self, url):
##        """
##        Private slot to initiate the display of the URL scan report page.
##        
##        @param url URL of the URL scan report page (string)
##        """
##        self.newTab(url)
##    
##    def __virusTotalFileScanReport(self, url):
##        """
##        Private slot to initiate the display of the file scan report page.
##        
##        @param url URL of the file scan report page (string)
##        """
##        self.newTab(url)
##    
##    def __virusTotalIpAddressReport(self):
##        """
##        Private slot to retrieve an IP address report.
##        """
##        ip, ok = QInputDialog.getText(
##            self,
##            self.tr("IP Address Report"),
##            self.tr("Enter a valid IPv4 address in dotted quad notation:"),
##            QLineEdit.Normal)
##        if ok and ip:
##            if ip.count(".") == 3:
##                self.__virusTotal.getIpAddressReport(ip)
##            else:
##                E5MessageBox.information(
##                    self,
##                    self.tr("IP Address Report"),
##                    self.tr("""The given IP address is not in dotted quad"""
##                            """ notation."""))
##    
##    def __virusTotalDomainReport(self):
##        """
##        Private slot to retrieve a domain report.
##        """
##        domain, ok = QInputDialog.getText(
##            self,
##            self.tr("Domain Report"),
##            self.tr("Enter a valid domain name:"),
##            QLineEdit.Normal)
##        if ok and domain:
##            self.__virusTotal.getDomainReport(domain)
    
    ###########################################################################
    ## Style sheet handling below                                            ##
    ###########################################################################
    
    def reloadUserStyleSheet(self):
        """
        Public method to reload the user style sheet.
        """
        styleSheet = Preferences.getWebBrowser("UserStyleSheet")
        self.__setUserStyleSheet(styleSheet)
    
    def __setUserStyleSheet(self, styleSheetFile):
        """
        Private method to set a user style sheet.
        
        @param styleSheetFile name of the user style sheet file (string)
        """
        # TODO: AdBlock
        userStyle = ""
##        userStyle = \
##            self.adBlockManager().elementHidingRules().replace('"', '\\"')
        
        userStyle += WebBrowserTools.readAllFileContents(styleSheetFile)\
            .replace("\n", "")
        name = "_eric_userstylesheet"
        
        oldScript = self.webProfile().scripts().findScript(name)
        if not oldScript.isNull():
            self.webProfile().scripts().remove(oldScript)
        
        if userStyle:
            script = QWebEngineScript()
            script.setName(name)
            script.setInjectionPoint(QWebEngineScript.DocumentCreation)
            script.setWorldId(QWebEngineScript.ApplicationWorld)
            script.setRunsOnSubFrames(True)
            script.setSourceCode(Scripts.setStyleSheet(userStyle))
            self.webProfile().scripts().insert(script)
    
    ##########################################
    ## Support for desktop notifications below
    ##########################################
    
    @classmethod
    def showNotification(cls, icon, heading, text):
        """
        Class method to show a desktop notification.
        
        @param icon icon to be shown in the notification (QPixmap)
        @param heading heading of the notification (string)
        @param text text of the notification (string)
        """
        if cls._fromEric:
            e5App().getObject("UserInterface").showNotification(
                icon, heading, text)
        else:
            if Preferences.getUI("NotificationsEnabled"):
                if cls._notification is None:
                    from UI.NotificationWidget import NotificationWidget
                    cls._notification = NotificationWidget()
                cls._notification.setPixmap(icon)
                cls._notification.setHeading(heading)
                cls._notification.setText(text)
                cls._notification.setTimeout(
                    Preferences.getUI("NotificationTimeout"))
                cls._notification.move(
                    Preferences.getUI("NotificationPosition"))
                cls._notification.show()
    
    @classmethod
    def notificationsEnabled(cls):
        """
        Class method to check, if notifications are enabled.
        
        @return flag indicating, if notifications are enabled (boolean)
        """
        if cls._fromEric:
            return e5App().getObject("UserInterface").notificationsEnabled()
        else:
            return Preferences.getUI("NotificationsEnabled")
    
    ###################################
    ## Support for download files below
    ###################################
    
    @classmethod
    def downloadRequested(self, download):
        """
        Class method to handle a download request.
        
        @param download reference to the download data
        @type QWebEngineDownloadItem
        """
        pass
        # TODO: DownloadManager
##        self.downloadManager().download(download, mainWindow=self)
    
    ########################################
    ## Support for web engine profiles below
    ########################################
    
    @classmethod
    def webProfile(cls, private=False):
        """
        Class method handling the web engine profile.
        
        @param private flag indicating the privacy mode
        @type bool
        @return reference to the web profile object
        @rtype QWebEngineProfile
        """
        if cls._webProfile is None:
            if private:
                cls._webProfile = QWebEngineProfile()
            else:
                cls._webProfile = QWebEngineProfile.defaultProfile()
            cls._webProfile.downloadRequested.connect(
                cls.downloadRequested)
            
            # Setup QWebChannel user script
            script = QWebEngineScript()
            script.setName("_eric_webchannel")
            script.setInjectionPoint(QWebEngineScript.DocumentCreation)
            script.setWorldId(QWebEngineScript.MainWorld)
            script.setRunsOnSubFrames(True)
            script.setSourceCode(Scripts.setupWebChannel())
            cls._webProfile.scripts().insert(script)
        
        return cls._webProfile