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

# Copyright (c) 2017 - 2018 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a dialog to get the data for a submodule deinit operation.
"""

from __future__ import unicode_literals

from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QDialog, QDialogButtonBox

from .Ui_GitSubmodulesDeinitDialog import Ui_GitSubmodulesDeinitDialog


class GitSubmodulesDeinitDialog(QDialog, Ui_GitSubmodulesDeinitDialog):
    """
    Class implementing a dialog to get the data for a submodule deinit
    operation.
    """
    def __init__(self, submodulePaths, parent=None):
        """
        Constructor
        
        @param submodulePaths list of submodule paths
        @type list of str
        @param parent reference to the parent widget
        @type QWidget
        """
        super(GitSubmodulesDeinitDialog, self).__init__(parent)
        self.setupUi(self)
        
        self.submodulesList.addItems(sorted(submodulePaths))
        
        self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(False)
    
    def __updateOK(self):
        """
        Private slot to update the state of the OK button.
        """
        enable = self.allCheckBox.isChecked() or \
            len(self.submodulesList.selectedItems()) > 0
        self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable)
    
    @pyqtSlot(bool)
    def on_allCheckBox_toggled(self, checked):
        """
        Private slot to react on changes of the all checkbox.
        
        @param checked state of the checkbox
        @type bool
        """
        self.__updateOK()
    
    @pyqtSlot()
    def on_submodulesList_itemSelectionChanged(self):
        """
        Private slot to react on changes of the submodule selection.
        """
        self.__updateOK()
    
    def getData(self):
        """
        Public method to get the entered data.
        
        @return tuple containing a flag to indicate all submodules, a list of
            selected submodules and a flag indicating an enforced operation
        @rtype tuple of (bool, list of str, bool)
        """
        submodulePaths = []
        deinitAll = self.allCheckBox.isChecked()
        if not deinitAll:
            for itm in self.submodulesList.selectedItems():
                submodulePaths.append(itm.text())
        
        return all, submodulePaths, self.forceCheckBox.isChecked()
