Preferences/ConfigurationPages/HelpWebBrowserPage.py

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

# Copyright (c) 2009 - 2013 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the Help web browser configuration page.
"""

from PyQt4.QtCore import pyqtSlot, QLocale
from PyQt4.QtNetwork import QNetworkRequest
from PyQt4.QtWebKit import QWebSettings

from .ConfigurationPageBase import ConfigurationPageBase
from .Ui_HelpWebBrowserPage import Ui_HelpWebBrowserPage

import Preferences
import UI.PixmapCache


class HelpWebBrowserPage(ConfigurationPageBase, Ui_HelpWebBrowserPage):
    """
    Class implementing the Help web browser configuration page.
    """
    def __init__(self, configDialog):
        """
        Constructor
        
        @param configDialog reference to the configuration dialog
            (ConfigurationDialog)
        """
        super().__init__()
        self.setupUi(self)
        self.setObjectName("HelpWebBrowserPage")
        
        self.__configDlg = configDialog
        mw = configDialog.parent().parent()
        if hasattr(mw, "helpWindow") and mw.helpWindow is not None:
            self.__helpWindow = mw.helpWindow
        elif hasattr(mw, "currentBrowser"):
            self.__helpWindow = mw
        else:
            self.__helpWindow = None
        self.setCurrentPageButton.setEnabled(self.__helpWindow is not None)
        
        defaultSchemes = ["file://", "http://", "https://"]
        self.defaultSchemeCombo.addItems(defaultSchemes)
        
        self.clickToFlashCheckBox.setIcon(
            UI.PixmapCache.getIcon("flashBlock.png"))
        
        # set initial values
        self.singleHelpWindowCheckBox.setChecked(
            Preferences.getHelp("SingleHelpWindow"))
        self.saveGeometryCheckBox.setChecked(
            Preferences.getHelp("SaveGeometry"))
        self.webSuggestionsCheckBox.setChecked(
            Preferences.getHelp("WebSearchSuggestions"))
        self.showTabPreviews.setChecked(
            Preferences.getHelp("ShowPreview"))
        self.accessKeysCheckBox.setChecked(
            Preferences.getHelp("AccessKeysEnabled"))
        
        self.javaCheckBox.setChecked(
            Preferences.getHelp("JavaEnabled"))
        self.javaScriptCheckBox.setChecked(
            Preferences.getHelp("JavaScriptEnabled"))
        self.jsOpenWindowsCheckBox.setChecked(
            Preferences.getHelp("JavaScriptCanOpenWindows"))
        self.jsClipboardCheckBox.setChecked(
            Preferences.getHelp("JavaScriptCanAccessClipboard"))
        self.pluginsCheckBox.setChecked(
            Preferences.getHelp("PluginsEnabled"))
        self.clickToFlashCheckBox.setChecked(
            Preferences.getHelp("ClickToFlashEnabled"))
        self.doNotTrackCheckBox.setChecked(
            Preferences.getHelp("DoNotTrack"))
        self.sendRefererCheckBox.setChecked(
            Preferences.getHelp("SendReferer"))
        
        self.diskCacheCheckBox.setChecked(
            Preferences.getHelp("DiskCacheEnabled"))
        self.cacheSizeSpinBox.setValue(
            Preferences.getHelp("DiskCacheSize"))
        cachePolicy = Preferences.getHelp("CachePolicy")
        if cachePolicy == QNetworkRequest.PreferNetwork:
            self.cacheKeepButton.setChecked(True)
        elif cachePolicy == QNetworkRequest.PreferCache:
            self.cachePreferButton.setChecked(True)
        elif cachePolicy == QNetworkRequest.AlwaysCache:
            self.cacheOfflineButton.setChecked(True)
        
        self.printBackgroundsCheckBox.setChecked(
            Preferences.getHelp("PrintBackgrounds"))
        
        self.startupCombo.setCurrentIndex(
            Preferences.getHelp("StartupBehavior"))
        self.homePageEdit.setText(
            Preferences.getHelp("HomePage"))
        
        self.defaultSchemeCombo.setCurrentIndex(
            self.defaultSchemeCombo.findText(
                Preferences.getHelp("DefaultScheme")))
        
        historyLimit = Preferences.getHelp("HistoryLimit")
        idx = 0
        if historyLimit == 1:
            idx = 0
        elif historyLimit == 7:
            idx = 1
        elif historyLimit == 14:
            idx = 2
        elif historyLimit == 30:
            idx = 3
        elif historyLimit == 365:
            idx = 4
        elif historyLimit == -1:
            idx = 5
        elif historyLimit == -2:
            idx = 6
        else:
            idx = 5
        self.expireHistory.setCurrentIndex(idx)
        
        for language in range(2, QLocale.LastLanguage + 1):
            if len(QLocale.countriesForLanguage(language)) > 0:
                self.languageCombo.addItem(
                    QLocale.languageToString(language), language)
        self.languageCombo.model().sort(0)
        self.languageCombo.insertSeparator(0)
        self.languageCombo.insertItem(0, QLocale.languageToString(0), 0)
        index = self.languageCombo.findData(
            Preferences.getHelp("SearchLanguage"))
        if index > -1:
            self.languageCombo.setCurrentIndex(index)
        
        if hasattr(QWebSettings, "SpatialNavigationEnabled"):
            self.spatialCheckBox.setChecked(
                Preferences.getHelp("SpatialNavigationEnabled"))
        else:
            self.spatialCheckBox.setEnabled(False)
        if hasattr(QWebSettings, "LinksIncludedInFocusChain"):
            self.linksInFocusChainCheckBox.setChecked(
                Preferences.getHelp("LinksIncludedInFocusChain"))
        else:
            self.linksInFocusChainCheckBox.setEnabled(False)
        if hasattr(QWebSettings, "XSSAuditingEnabled"):
            self.xssAuditingCheckBox.setChecked(
                Preferences.getHelp("XSSAuditingEnabled"))
        else:
            self.xssAuditingCheckBox.setEnabled(False)
        if hasattr(QWebSettings, "SiteSpecificQuirksEnabled"):
            self.quirksCheckBox.setChecked(
                Preferences.getHelp("SiteSpecificQuirksEnabled"))
        else:
            self.quirksCheckBox.setEnabled(False)
    
    def save(self):
        """
        Public slot to save the Help Viewers configuration.
        """
        Preferences.setHelp("SingleHelpWindow",
            self.singleHelpWindowCheckBox.isChecked())
        Preferences.setHelp("SaveGeometry",
            self.saveGeometryCheckBox.isChecked())
        Preferences.setHelp("WebSearchSuggestions",
            self.webSuggestionsCheckBox.isChecked())
        Preferences.setHelp("ShowPreview",
            self.showTabPreviews.isChecked())
        Preferences.setHelp("AccessKeysEnabled",
            self.accessKeysCheckBox.isChecked())
        
        Preferences.setHelp("JavaEnabled",
            self.javaCheckBox.isChecked())
        Preferences.setHelp("JavaScriptEnabled",
            self.javaScriptCheckBox.isChecked())
        Preferences.setHelp("JavaScriptCanOpenWindows",
            self.jsOpenWindowsCheckBox.isChecked())
        Preferences.setHelp("JavaScriptCanAccessClipboard",
            self.jsClipboardCheckBox.isChecked())
        Preferences.setHelp("PluginsEnabled",
            self.pluginsCheckBox.isChecked())
        Preferences.setHelp("ClickToFlashEnabled",
            self.clickToFlashCheckBox.isChecked())
        Preferences.setHelp("DoNotTrack",
            self.doNotTrackCheckBox.isChecked())
        Preferences.setHelp("SendReferer",
            self.sendRefererCheckBox.isChecked())
        
        Preferences.setHelp("DiskCacheEnabled",
            self.diskCacheCheckBox.isChecked())
        Preferences.setHelp("DiskCacheSize",
            self.cacheSizeSpinBox.value())
        if self.cacheKeepButton.isChecked():
            Preferences.setHelp("CachePolicy",
                QNetworkRequest.PreferNetwork)
        elif self.cachePreferButton.isChecked():
            Preferences.setHelp("CachePolicy",
                QNetworkRequest.PreferCache)
        elif self.cacheOfflineButton.isChecked():
            Preferences.setHelp("CachePolicy",
                QNetworkRequest.AlwaysCache)
        
        Preferences.setHelp("PrintBackgrounds",
            self.printBackgroundsCheckBox.isChecked())
        
        Preferences.setHelp("StartupBehavior",
            self.startupCombo.currentIndex())
        Preferences.setHelp("HomePage",
            self.homePageEdit.text())
        
        Preferences.setHelp("DefaultScheme",
            self.defaultSchemeCombo.currentText())
        
        idx = self.expireHistory.currentIndex()
        if idx == 0:
            historyLimit = 1
        elif idx == 1:
            historyLimit = 7
        elif idx == 2:
            historyLimit = 14
        elif idx == 3:
            historyLimit = 30
        elif idx == 4:
            historyLimit = 365
        elif idx == 5:
            historyLimit = -1
        elif idx == 6:
            historyLimit = -2
        Preferences.setHelp("HistoryLimit", historyLimit)
        
        languageIndex = self.languageCombo.currentIndex()
        if languageIndex > -1:
            language = self.languageCombo.itemData(languageIndex)
        else:
            # fall back to system default
            language = QLocale.system().language()
        Preferences.setHelp("SearchLanguage", language)
        
        if hasattr(QWebSettings, "SpatialNavigationEnabled"):
            Preferences.setHelp("SpatialNavigationEnabled",
                self.spatialCheckBox.isChecked())
        if hasattr(QWebSettings, "LinksIncludedInFocusChain"):
            Preferences.setHelp("LinksIncludedInFocusChain",
                self.linksInFocusChainCheckBox.isChecked())
        if hasattr(QWebSettings, "XSSAuditingEnabled"):
            Preferences.setHelp("XSSAuditingEnabled",
                self.xssAuditingCheckBox.isChecked())
        if hasattr(QWebSettings, "SiteSpecificQuirksEnabled"):
            Preferences.setHelp("SiteSpecificQuirksEnabled",
                self.quirksCheckBox.isChecked())
    
    @pyqtSlot()
    def on_setCurrentPageButton_clicked(self):
        """
        Private slot to set the current page as the home page.
        """
        url = self.__helpWindow.currentBrowser().url()
        self.homePageEdit.setText(bytes(url.toEncoded()).decode())
    
    @pyqtSlot()
    def on_defaultHomeButton_clicked(self):
        """
        Private slot to set the default home page.
        """
        self.homePageEdit.setText(Preferences.Prefs.helpDefaults["HomePage"])
    
    @pyqtSlot(int)
    def on_startupCombo_currentIndexChanged(self, index):
        """
        Private slot to enable elements depending on the selected startup
        entry.
        
        @param index index of the selected entry (integer)
        """
        enable = index == 0
        self.homePageLabel.setEnabled(enable)
        self.homePageEdit.setEnabled(enable)
        self.defaultHomeButton.setEnabled(enable)
        self.setCurrentPageButton.setEnabled(enable)
    
    @pyqtSlot()
    def on_refererWhitelistButton_clicked(self):
        """
        Private slot to edit the referer whitelist.
        """
        from Helpviewer.Network.SendRefererWhitelistDialog import \
            SendRefererWhitelistDialog
        SendRefererWhitelistDialog(self).exec_()
    
    @pyqtSlot()
    def on_noCacheHostsButton_clicked(self):
        """
        Private slot to edit the list of hosts exempted from caching.
        """
        from Helpviewer.Network.NoCacheHostsDialog import \
            NoCacheHostsDialog
        NoCacheHostsDialog(self).exec_()


def create(dlg):
    """
    Module function to create the configuration page.
    
    @param dlg reference to the configuration dialog
    @return reference to the instantiated page (ConfigurationPageBase)
    """
    page = HelpWebBrowserPage(dlg)
    return page