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

# Copyright (c) 2006 - 2022 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the Qt configuration page.
"""

from PyQt6.QtCore import pyqtSlot

from EricWidgets.EricApplication import ericApp
from EricWidgets.EricPathPicker import EricPathPickerModes

from .ConfigurationPageBase import ConfigurationPageBase
from .Ui_QtPage import Ui_QtPage

import Preferences
import UI.PixmapCache


class QtPage(ConfigurationPageBase, Ui_QtPage):
    """
    Class implementing the Qt configuration page.
    """
    def __init__(self):
        """
        Constructor
        """
        super().__init__()
        self.setupUi(self)
        self.setObjectName("QtPage")
        
        try:
            self.__virtualenvManager = ericApp().getObject("VirtualEnvManager")
            self.__standalone = False
        except KeyError:
            from VirtualEnv.VirtualenvManager import VirtualenvManager
            self.__virtualenvManager = VirtualenvManager()
            self.__standalone = True
        
        for button in (
            self.pyqt5VenvDlgButton, self.pyqt6VenvDlgButton,
            self.pyside2VenvDlgButton, self.pyside6VenvDlgButton,
        ):
            button.setIcon(UI.PixmapCache.getIcon("virtualenv"))
            button.clicked.connect(self.__showVirtualEnvManager)
            button.setVisible(self.__standalone)
        
        for button in (
            self.pyqt5VenvRefreshButton, self.pyqt6VenvRefreshButton,
            self.pyside2VenvRefreshButton, self.pyside6VenvRefreshButton,
        ):
            button.setIcon(UI.PixmapCache.getIcon("reload"))
            button.clicked.connect(self.__populateAndSetVenvComboBoxes)
            button.setVisible(not self.__standalone)
        
        self.qtTransPicker.setMode(EricPathPickerModes.DIRECTORY_MODE)
        for picker in (
            self.qtToolsDirPicker,
            self.pyqtToolsDirPicker,
            self.pyqt6ToolsDirPicker,
            self.pyside2ToolsDirPicker,
            self.pyside6ToolsDirPicker,
        ):
            picker.setMode(EricPathPickerModes.DIRECTORY_SHOW_FILES_MODE)
        
        self.__populateAndSetVenvComboBoxes(True)
        
        # set initial values
        self.qtTransPicker.setText(
            Preferences.getQt("Qt6TranslationsDir"))
        
        # Qt
        self.qtToolsDirPicker.setText(Preferences.getQt("QtToolsDir"))
        self.qtPrefixEdit.setText(Preferences.getQt("QtToolsPrefix"))
        self.qtPostfixEdit.setText(Preferences.getQt("QtToolsPostfix"))
        self.__updateQtSample()
        
        # PyQt 5
        self.pyqtToolsDirPicker.setText(Preferences.getQt("PyQtToolsDir"))
        self.pyuicIndentSpinBox.setValue(Preferences.getQt("PyuicIndent"))
        self.pyuicImportsCheckBox.setChecked(
            Preferences.getQt("PyuicFromImports"))
        self.pyuicExecuteCheckBox.setChecked(
            Preferences.getQt("PyuicExecute"))
        
        # PyQt 6
        self.pyqt6ToolsDirPicker.setText(Preferences.getQt("PyQt6ToolsDir"))
        self.pyuic6IndentSpinBox.setValue(Preferences.getQt("Pyuic6Indent"))
        self.pyuic6ExecuteCheckBox.setChecked(
            Preferences.getQt("Pyuic6Execute"))
        
        # PySide 2
        self.pyside2ToolsDirPicker.setText(
            Preferences.getQt("PySide2ToolsDir"))
        self.pyside2uicImportsCheckBox.setChecked(
            Preferences.getQt("PySide2FromImports"))
        
        # PySide 6
        self.pyside6ToolsDirPicker.setText(
            Preferences.getQt("PySide6ToolsDir"))
        self.pyside6uicImportsCheckBox.setChecked(
            Preferences.getQt("PySide6FromImports"))
    
    def save(self):
        """
        Public slot to save the Qt configuration.
        """
        Preferences.setQt("Qt6TranslationsDir", self.qtTransPicker.text())
        Preferences.setQt("QtToolsDir", self.qtToolsDirPicker.text())
        Preferences.setQt("QtToolsPrefix", self.qtPrefixEdit.text())
        Preferences.setQt("QtToolsPostfix", self.qtPostfixEdit.text())
        
        Preferences.setQt("PyQtVenvName", self.pyqt5VenvComboBox.currentText())
        Preferences.setQt("PyQtToolsDir", self.pyqtToolsDirPicker.text())
        Preferences.setQt("PyuicIndent", self.pyuicIndentSpinBox.value())
        Preferences.setQt("PyuicFromImports",
                          self.pyuicImportsCheckBox.isChecked())
        Preferences.setQt("PyuicExecute",
                          self.pyuicExecuteCheckBox.isChecked())
        
        Preferences.setQt("PyQt6VenvName",
                          self.pyqt6VenvComboBox.currentText())
        Preferences.setQt("PyQt6ToolsDir", self.pyqt6ToolsDirPicker.text())
        Preferences.setQt("Pyuic6Indent", self.pyuic6IndentSpinBox.value())
        Preferences.setQt("Pyuic6Execute",
                          self.pyuic6ExecuteCheckBox.isChecked())
        
        Preferences.setQt("PySide2VenvName",
                          self.pyside2VenvComboBox.currentText())
        Preferences.setQt("PySide2ToolsDir", self.pyside2ToolsDirPicker.text())
        Preferences.setQt("PySide2FromImports",
                          self.pyside2uicImportsCheckBox.isChecked())
        
        Preferences.setQt("PySide6VenvName",
                          self.pyside6VenvComboBox.currentText())
        Preferences.setQt("PySide6ToolsDir", self.pyside6ToolsDirPicker.text())
        Preferences.setQt("PySide6FromImports",
                          self.pyside6uicImportsCheckBox.isChecked())
    
    def __updateQtSample(self):
        """
        Private slot to update the Qt tools sample label.
        """
        self.qtSampleLabel.setText(
            self.tr("Sample: {0}designer{1}").format(
                self.qtPrefixEdit.text(), self.qtPostfixEdit.text()))
    
    @pyqtSlot(str)
    def on_qtPrefixEdit_textChanged(self, txt):
        """
        Private slot to handle a change in the entered Qt directory.
        
        @param txt the entered string (string)
        """
        self.__updateQtSample()
    
    @pyqtSlot(str)
    def on_qtPostfixEdit_textChanged(self, txt):
        """
        Private slot to handle a change in the entered Qt directory.
        
        @param txt the entered string (string)
        """
        self.__updateQtSample()
    
    def __populateAndSetVenvComboBox(self, comboBox, envKey, initial):
        """
        Private method to populate and set the virtual environment combo boxes.
        
        @param comboBox reference to the combo box to be populated
        @type QComboBox
        @param envKey preferences key for the environment
        @type str
        @param initial flag indicating an initial population
        @type bool
        """
        venvName = (Preferences.getQt(envKey) if initial
                    else comboBox.currentText())
        
        comboBox.clear()
        comboBox.addItems(
            [""] +
            sorted(self.__virtualenvManager.getVirtualenvNames())
        )
        
        if venvName:
            index = comboBox.findText(venvName)
            if index < 0:
                index = 0
            comboBox.setCurrentIndex(index)
    
    def __populateAndSetVenvComboBoxes(self, initial):
        """
        Private method to populate the virtual environment combo boxes.
        
        @param initial flag indicating an initial population
        @type bool
        """
        self.__populateAndSetVenvComboBox(
            self.pyqt5VenvComboBox, "PyQtVenvName", initial)
        self.__populateAndSetVenvComboBox(
            self.pyqt6VenvComboBox, "PyQt6VenvName", initial)
        self.__populateAndSetVenvComboBox(
            self.pyside2VenvComboBox, "PySide2VenvName", initial)
        self.__populateAndSetVenvComboBox(
            self.pyside6VenvComboBox, "PySide6VenvName", initial)
    
    def __showVirtualEnvManager(self):
        """
        Private method to show the virtual environment manager dialog.
        """
        self.__virtualenvManager.showVirtualenvManagerDialog(modal=True)
        self.__populateAndSetVenvComboBoxes(False)
        self.activateWindow()
        self.raise_()


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 = QtPage()
    return page
