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

# Copyright (c) 2003 - 2018 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a dialog to edit breakpoint properties.
"""

from __future__ import unicode_literals

import os.path

from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QComboBox

from E5Gui.E5PathPicker import E5PathPickerModes

from .Ui_EditBreakpointDialog import Ui_EditBreakpointDialog


class EditBreakpointDialog(QDialog, Ui_EditBreakpointDialog):
    """
    Class implementing a dialog to edit breakpoint properties.
    """
    def __init__(self, breakPointId, properties, condHistory, parent=None,
                 name=None, modal=False, addMode=False, filenameHistory=None):
        """
        Constructor
        
        @param breakPointId id of the breakpoint (tuple)
                (filename, linenumber)
        @param properties properties for the breakpoint (tuple)
                (condition, temporary flag, enabled flag, ignore count)
        @param condHistory the list of conditionals history (list of strings)
        @param parent the parent of this dialog (QWidget)
        @param name the widget name of this dialog (string)
        @param modal flag indicating a modal dialog (boolean)
        @param addMode flag indicating the add mode (boolean)
        @param filenameHistory list of recently used file names
            (list of strings)
        """
        super(EditBreakpointDialog, self).__init__(parent)
        self.setupUi(self)
        if name:
            self.setObjectName(name)
        self.setModal(modal)
        
        self.filenamePicker.setMode(E5PathPickerModes.OpenFileMode)
        self.filenamePicker.setSizeAdjustPolicy(
            QComboBox.AdjustToMinimumContentsLength)
        
        self.okButton = self.buttonBox.button(QDialogButtonBox.Ok)
        
        fn, lineno = breakPointId
        
        if not addMode:
            cond, temp, enabled, count = properties
            
            # set the filename
            if fn is not None:
                self.filenamePicker.setEditText(fn)
            
            # set the line number
            self.linenoSpinBox.setValue(lineno)
            
            # set the condition
            if cond is None:
                cond = ''
            try:
                curr = condHistory.index(cond)
            except ValueError:
                condHistory.insert(0, cond)
                curr = 0
            self.conditionCombo.addItems(condHistory)
            self.conditionCombo.setCurrentIndex(curr)
            
            # set the ignore count
            self.ignoreSpinBox.setValue(count)
            
            # set the checkboxes
            self.temporaryCheckBox.setChecked(temp)
            self.enabledCheckBox.setChecked(enabled)
            
            self.filenamePicker.setEnabled(False)
            self.linenoSpinBox.setEnabled(False)
            self.conditionCombo.setFocus()
        else:
            self.setWindowTitle(self.tr("Add Breakpoint"))
            # set the filename
            if fn is None:
                fn = ""
            try:
                curr = filenameHistory.index(fn)
            except ValueError:
                filenameHistory.insert(0, fn)
                curr = 0
            self.filenamePicker.addItems(filenameHistory)
            self.filenamePicker.setCurrentIndex(curr)
            
            # set the condition
            cond = ''
            try:
                curr = condHistory.index(cond)
            except ValueError:
                condHistory.insert(0, cond)
                curr = 0
            self.conditionCombo.addItems(condHistory)
            self.conditionCombo.setCurrentIndex(curr)
            
            if not fn:
                self.okButton.setEnabled(False)
        
        msh = self.minimumSizeHint()
        self.resize(max(self.width(), msh.width()), msh.height())
        
    def on_filenamePicker_editTextChanged(self, fn):
        """
        Private slot to handle the change of the filename.
        
        @param fn text of the filename edit (string)
        """
        if not fn:
            self.okButton.setEnabled(False)
        else:
            self.okButton.setEnabled(True)
        
    def getData(self):
        """
        Public method to retrieve the entered data.
        
        @return a tuple containing the breakpoints new properties
            (condition, temporary flag, enabled flag, ignore count)
        """
        return (self.conditionCombo.currentText(),
                self.temporaryCheckBox.isChecked(),
                self.enabledCheckBox.isChecked(), self.ignoreSpinBox.value())
        
    def getAddData(self):
        """
        Public method to retrieve the entered data for an add.
        
        @return a tuple containing the new breakpoints properties
            (filename, lineno, condition, temporary flag, enabled flag,
            ignore count)
        """
        fn = self.filenamePicker.currentText()
        if not fn:
            fn = None
        else:
            fn = os.path.expanduser(os.path.expandvars(fn))
        
        return (fn, self.linenoSpinBox.value(),
                self.conditionCombo.currentText(),
                self.temporaryCheckBox.isChecked(),
                self.enabledCheckBox.isChecked(),
                self.ignoreSpinBox.value())
