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

# Copyright (c) 2006 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the Shell configuration page.
"""


from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QFontDialog

from .ConfigurationPageBase import ConfigurationPageBase
from .Ui_ShellPage import Ui_ShellPage

import Preferences

try:
    MonospacedFontsOption = QFontDialog.MonospacedFonts
except AttributeError:
    MonospacedFontsOption = QFontDialog.FontDialogOptions(0x10)

from QScintilla.Shell import ShellHistoryStyle


class ShellPage(ConfigurationPageBase, Ui_ShellPage):
    """
    Class implementing the Shell configuration page.
    """
    def __init__(self):
        """
        Constructor
        """
        super(ShellPage, self).__init__()
        self.setupUi(self)
        self.setObjectName("ShellPage")
        
        self.shellHistoryStyleComboBox.addItem(
            self.tr("Disabled"), ShellHistoryStyle.Disabled.value)
        self.shellHistoryStyleComboBox.addItem(
            self.tr("Linux Style"), ShellHistoryStyle.LinuxStyle.value)
        self.shellHistoryStyleComboBox.addItem(
            self.tr("Windows Style"), ShellHistoryStyle.WindowsStyle.value)
        
        # set initial values
        self.shellLinenoCheckBox.setChecked(
            Preferences.getShell("LinenoMargin"))
        self.shellWordWrapCheckBox.setChecked(
            Preferences.getShell("WrapEnabled"))
        self.shellACEnabledCheckBox.setChecked(
            Preferences.getShell("AutoCompletionEnabled"))
        self.shellCTEnabledCheckBox.setChecked(
            Preferences.getShell("CallTipsEnabled"))
        self.shellSyntaxHighlightingCheckBox.setChecked(
            Preferences.getShell("SyntaxHighlightingEnabled"))
        self.rememberCheckBox.setChecked(
            Preferences.getShell("StartWithMostRecentlyUsedEnvironment"))
        self.shellHistorySpinBox.setValue(
            Preferences.getShell("MaxHistoryEntries"))
        index = self.shellHistoryStyleComboBox.findData(
            Preferences.getShell("HistoryStyle").value)
        self.shellHistoryStyleComboBox.setCurrentIndex(index)
        self.shellHistoryWrapCheckBox.setChecked(
            Preferences.getShell("HistoryWrap"))
        self.shellHistoryCursorKeysCheckBox.setChecked(
            Preferences.getShell("HistoryNavigateByCursor"))
        self.stdOutErrCheckBox.setChecked(
            Preferences.getShell("ShowStdOutErr"))
        
        self.monospacedFont = Preferences.getShell("MonospacedFont")
        self.monospacedFontSample.setFont(self.monospacedFont)
        self.monospacedCheckBox.setChecked(
            Preferences.getShell("UseMonospacedFont"))
        self.marginsFont = Preferences.getShell("MarginsFont")
        self.marginsFontSample.setFont(self.marginsFont)
        
    def save(self):
        """
        Public slot to save the Shell configuration.
        """
        Preferences.setShell(
            "LinenoMargin",
            self.shellLinenoCheckBox.isChecked())
        Preferences.setShell(
            "WrapEnabled",
            self.shellWordWrapCheckBox.isChecked())
        Preferences.setShell(
            "AutoCompletionEnabled",
            self.shellACEnabledCheckBox.isChecked())
        Preferences.setShell(
            "CallTipsEnabled",
            self.shellCTEnabledCheckBox.isChecked())
        Preferences.setShell(
            "SyntaxHighlightingEnabled",
            self.shellSyntaxHighlightingCheckBox.isChecked())
        Preferences.setShell(
            "StartWithMostRecentlyUsedEnvironment",
            self.rememberCheckBox.isChecked())
        Preferences.setShell(
            "MaxHistoryEntries",
            self.shellHistorySpinBox.value())
        Preferences.setShell(
            "HistoryStyle",
            ShellHistoryStyle(self.shellHistoryStyleComboBox.currentData()))
        Preferences.setShell(
            "HistoryWrap",
            self.shellHistoryWrapCheckBox.isChecked())
        Preferences.setShell(
            "HistoryNavigateByCursor",
            self.shellHistoryCursorKeysCheckBox.isChecked())
        Preferences.setShell(
            "ShowStdOutErr",
            self.stdOutErrCheckBox.isChecked())
        
        Preferences.setShell("MonospacedFont", self.monospacedFont)
        Preferences.setShell(
            "UseMonospacedFont",
            self.monospacedCheckBox.isChecked())
        Preferences.setShell("MarginsFont", self.marginsFont)
        
    @pyqtSlot()
    def on_monospacedFontButton_clicked(self):
        """
        Private method used to select the font to be used as the monospaced
        font.
        """
        self.monospacedFont = self.selectFont(
            self.monospacedFontSample, self.monospacedFont,
            options=MonospacedFontsOption)
        
    @pyqtSlot()
    def on_linenumbersFontButton_clicked(self):
        """
        Private method used to select the font for the editor margins.
        """
        self.marginsFont = self.selectFont(
            self.marginsFontSample, self.marginsFont,
            options=MonospacedFontsOption)
        
    def polishPage(self):
        """
        Public slot to perform some polishing actions.
        """
        self.monospacedFontSample.setFont(self.monospacedFont)
        self.marginsFontSample.setFont(self.marginsFont)
    

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 = ShellPage()
    return page
