src/eric7/WebBrowser/Sync/SyncEncryptionPage.py

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

# Copyright (c) 2012 - 2023 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing encryption settings wizard page.
"""

from PyQt6.QtCore import pyqtSlot
from PyQt6.QtWidgets import QWizardPage

from eric7 import Preferences

from . import SyncGlobals
from .Ui_SyncEncryptionPage import Ui_SyncEncryptionPage


class SyncEncryptionPage(QWizardPage, Ui_SyncEncryptionPage):
    """
    Class implementing encryption settings wizard page.
    """

    def __init__(self, parent=None):
        """
        Constructor

        @param parent reference to the parent widget (QWidget)
        """
        super().__init__(parent)
        self.setupUi(self)

        self.keySizeComboBox.addItem(self.tr("128 Bits"), 16)
        self.keySizeComboBox.addItem(self.tr("192 Bits"), 24)
        self.keySizeComboBox.addItem(self.tr("256 Bits"), 32)

        self.registerField("ReencryptData", self.reencryptCheckBox)

        self.encryptionGroupBox.setChecked(Preferences.getWebBrowser("SyncEncryptData"))
        self.encryptionKeyEdit.setText(Preferences.getWebBrowser("SyncEncryptionKey"))
        self.encryptionKeyAgainEdit.setEnabled(False)
        self.keySizeComboBox.setCurrentIndex(
            self.keySizeComboBox.findData(
                Preferences.getWebBrowser("SyncEncryptionKeyLength")
            )
        )
        self.loginsOnlyCheckBox.setChecked(
            Preferences.getWebBrowser("SyncEncryptPasswordsOnly")
        )

    def nextId(self):
        """
        Public method returning the ID of the next wizard page.

        @return next wizard page ID (integer)
        """
        Preferences.setWebBrowser(
            "SyncEncryptData", self.encryptionGroupBox.isChecked()
        )
        Preferences.setWebBrowser("SyncEncryptionKey", self.encryptionKeyEdit.text())
        Preferences.setWebBrowser(
            "SyncEncryptionKeyLength",
            self.keySizeComboBox.itemData(self.keySizeComboBox.currentIndex()),
        )
        Preferences.setWebBrowser(
            "SyncEncryptPasswordsOnly", self.loginsOnlyCheckBox.isChecked()
        )

        return SyncGlobals.PageType

    def isComplete(self):
        """
        Public method to check the completeness of the page.

        @return flag indicating completeness (boolean)
        """
        if self.encryptionGroupBox.isChecked():
            if self.encryptionKeyEdit.text() == "":
                complete = False
            else:
                if self.reencryptCheckBox.isChecked():
                    complete = (
                        self.encryptionKeyEdit.text()
                        == self.encryptionKeyAgainEdit.text()
                    )
                else:
                    complete = True
        else:
            complete = True

        return complete

    def __updateUI(self):
        """
        Private slot to update the variable parts of the UI.
        """
        error = ""

        if self.encryptionGroupBox.isChecked():
            self.encryptionKeyAgainEdit.setEnabled(self.reencryptCheckBox.isChecked())

            if self.encryptionKeyEdit.text() == "":
                error = error or self.tr("Encryption key must not be empty.")

            if (
                self.encryptionKeyEdit.text() != ""
                and self.reencryptCheckBox.isChecked()
                and (
                    self.encryptionKeyEdit.text() != self.encryptionKeyAgainEdit.text()
                )
            ):
                error = error or self.tr("Repeated encryption key is wrong.")

        self.errorLabel.setText(error)
        self.completeChanged.emit()

    @pyqtSlot(str)
    def on_encryptionKeyEdit_textChanged(self, txt):
        """
        Private slot to handle changes of the encryption key.

        @param txt content of the edit widget (string)
        """
        self.passwordMeter.checkPasswordStrength(txt)
        self.__updateUI()

    @pyqtSlot(str)
    def on_encryptionKeyAgainEdit_textChanged(self, txt):
        """
        Private slot to handle changes of the encryption key repetition.

        @param txt content of the edit widget (string)
        """
        self.__updateUI()

    @pyqtSlot(bool)
    def on_encryptionGroupBox_toggled(self, on):
        """
        Private slot to handle changes of the encryption selection.

        @param on state of the group box (boolean)
        """
        self.__updateUI()

    @pyqtSlot(bool)
    def on_reencryptCheckBox_toggled(self, on):
        """
        Private slot to handle changes of the re-encryption selection.

        @param on state of the check box (boolean)
        """
        self.__updateUI()