#!/usr/bin/env python
#coding: utf-8

# Copyright 2008, Tiril Anette Langfeldt Rødland
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

import os
import platform
import sys
import string
import datetime
import time
import random
from PyQt4.QtCore import *
from PyQt4.QtGui import *
#from PyQt4 import QtGui
#from PyQt4 import QtCore
from pysqlite2 import dbapi2 as sqlite
#import qrc_resources
from qrc_resources import *


__version__ = "0.0.2"


main = None
semesters = []
semester = None
courses = []
coursesString = []
books = []
booksString = []
chosenDay = QDate()
colors = []
termList = None

class MainWindow(QMainWindow):

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        
        # The program name
        self.title = "Egon"
       
        # The days
        self.days = [self.trUtf8("Monday"), self.trUtf8("Tuesday"), self.trUtf8("Wednesday"), self.trUtf8("Thursday"), self.trUtf8("Friday")]

        # The tabs
        self.assignment = AssignmentTab()
        self.reading = ReadingTab()
        self.schedule = ScheduleTab()
        
        # Set the tabs in the middle
        self.tabs = QTabWidget()
        self.tabs.addTab(self.assignment, "&Assignments")
        self.tabs.addTab(self.reading, "&Reading List")
        self.tabs.addTab(self.schedule, "&Schedule")
        self.tabs.setTabShape(QTabWidget.Rounded)
        self.tabs.setTabPosition(QTabWidget.North)
        self.setCentralWidget(self.tabs)
        
        # Set the title
        self.setWindowTitle(self.title)
        
        # The calendar
        self.calendarFrame = QFrame()
        self.calendarFrame.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
        self.calendarDockWidget = QDockWidget("Calendar", self)
        self.calendarDockWidget.setVisible(False)
        self.calendarDockWidget.setObjectName("CalendarDockWidget")
        self.calendarDockWidget.setAllowedAreas(Qt.LeftDockWidgetArea|Qt.RightDockWidgetArea|Qt.BottomDockWidgetArea)
        self.calendar = QCalendarWidget()
	self.calendar.setFirstDayOfWeek(Qt.Monday)
        self.calendarLayout = QVBoxLayout()
        self.calendarLayout.addWidget(self.calendar)
        self.calendarFrame.setLayout(self.calendarLayout)
        self.calendarFrame.hide()
        self.calendarDockWidget.setWidget(self.calendarFrame)
        
        # The semesters
        global semester, semesters, termList
	termList = QStringList()
	termList.append(self.trUtf8("Spring"))
        termList.append(self.trUtf8("Autumn"))
        semesters = getSemestersFromDB()
        semester = self.getLatestSemester(semesters)	
        if semester:
            print semester.getTerm(), semester.getYear()		
            self.load(semester)		

        # Actions
        fileNewAction = self.createAction("&New", self.fileNew, QKeySequence.New, "filenew", "Create a new semester plan")
        fileOpenAction = self.createAction("&Open", self.fileOpen, QKeySequence.Open, "fileopen",  "Open an existing semester plan")
        filePrintAction = self.createAction("&Print", self.filePrint, QKeySequence.Print, "fileprint", "Print plan")
        fileQuitAction = self.createAction("&Quit", self.close, "Ctrl+Q", "filequit", "Quit program")
        editAddCourse = self.createAction("Add &course", self.addCourse, "Ctrl+C", None, "Add a new course")
        editAddBook = self.createAction("Add &book", self.addBook, "Ctrl+B", None, "Add a new book")
        editAddAssignment = self.createAction("Add &assignment", self.addAssignment, "Ctrl+A", None, "Add a new assignment")
        editAddReading = self.createAction("Add &reading", self.addReading, "Ctrl+R", None, "Add a new reading")
        editAddLesson = self.createAction("Add &lesson", self.addLesson, "Ctrl+L", None, "Add a new lesson")
        editShowCalendar = self.createAction("Cal&endar", self.showCalendar, "Ctrl+E", None, "Show the calendar")
        helpAboutScheduler = self.createAction("&About %s" % self.title)

        # Menus
        self.fileMenu = self.menuBar().addMenu("&File")
        self.editMenu = self.menuBar().addMenu("&Edit")
        self.helpMenu = self.menuBar().addMenu("&Help")
        
        # Add actions to the menus
        self.addActions(self.fileMenu, (fileNewAction, fileOpenAction, None, filePrintAction, None, fileQuitAction))
        self.addActions(self.editMenu, (editAddCourse, editAddBook, None, editAddAssignment, None, editAddReading, None, editAddLesson, None, editShowCalendar))
        self.addActions(self.helpMenu, (helpAboutScheduler, None))
        
        # Connect statements
        self.connect(editAddCourse, SIGNAL("triggered()"), self.addCourse)
        self.connect(editAddBook, SIGNAL("triggered()"), self.addBook)
        self.connect(editAddAssignment, SIGNAL("triggered()"), self.addAssignment)
        self.connect(editAddReading, SIGNAL("triggered()"), self.addReading)
        self.connect(editAddLesson, SIGNAL("triggered()"), self.addLesson)
        self.connect(editShowCalendar, SIGNAL("pressed()"), self.showCalendar)
        self.connect(helpAboutScheduler, SIGNAL("triggered()"), self.helpAbout)
        self.connect(self.assignment.addAssignmentButton, SIGNAL("pressed()"), self.addAssignment)
        self.connect(self.assignment.deleteAssignmentButton, SIGNAL("pressed()"), self.deleteAssignment)
        self.connect(self.assignment.completeAssignmentBox, SIGNAL("currentIndexChanged(QString)"), self.completeAssignment)
        self.connect(self.reading.addReadingButton, SIGNAL("pressed()"), self.addReading)
        self.connect(self.reading.deleteReadingButton, SIGNAL("pressed()"), self.deleteReading)	
        self.connect(self.reading.readingDoneButton, SIGNAL("pressed()"), self.doneReading)
        self.connect(self.schedule.addScheduleButton, SIGNAL("pressed()"), self.addLesson)
        self.connect(self.schedule.deleteScheduleButton, SIGNAL("pressed()"), self.deleteLesson)
        self.connect(self.calendar, SIGNAL("selectionChanged()"), self.changeDay)

        # The toolbars
        fileToolbar = self.addToolBar("File")
        fileToolbar.setObjectName("FileToolBar")
        self.addActions(fileToolbar, (fileNewAction, fileOpenAction, None, filePrintAction, None, fileQuitAction))
        editToolbar = self.addToolBar("Edit")
        editToolbar.setObjectName("EditToolBar")
        self.addActions(editToolbar, (editAddCourse, editAddBook, None, editShowCalendar))
        
        courses = getCourses()
        makeCoursesString()

        global main
        main = self	

    def addCourse(self):##, code, title, short):
        self.acdlg = AddCourseDlg()
        self.acdlg.show()
        
    def addBook(self):##, isbn, title, author, edition, course):
        self.abdlg = AddBookDlg()
        self.abdlg.show()

    def addAssignment(self):
        self.aadlg = AddAssignmentDlg()
        self.aadlg.show()
    
    def deleteAssignment(self):
        course, number = self.getCourseAndNumber()
        table, row = self.getAssignmentTableAndRow()	
        global semester
        removeAssignmentFromDB(course, number) 
        table.removeRow(row)	
        table.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)

    def completeAssignment(self, completionLevel):
        course, number = self.getCourseAndNumber()
        table, row = self.getAssignmentTableAndRow()
	updateAssignmentCompletion(course, number, completionLevel)
        item = QTableWidgetItem(QString(completionLevel))	
        item.setBackground(self.assignment.makeBrush(completionLevel))
	table.setItem(row, 4, item)
        table.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)

    def getAssignmentTableAndRow(self):
        table = self.assignment.assignmentTable
        row = table.currentRow()	
        return table, row	

    def getCourseAndNumber(self):
        table, row = self.getAssignmentTableAndRow()
        courseItem = table.item(row, 1)
        numberItem = table.item(row, 2)
        courseFull = courseItem.text()
        number = numberItem.text()
	course = getCourseCode(courseFull)
        return course, number

    def addReading(self):
        self.ardlg = AddReadingDlg()
        self.ardlg.show()

    def deleteReading(self):
        week, course, book = self.getWeekCourseAndBook()	    
        table, row = self.getReadingTableAndRow()
        global semester	
        removeReadingFromDB(week, course, book)
        table.removeRow(row)
        table.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)
    
    def doneReading(self):
        table, row = self.getReadingTableAndRow()
        if table.item(row, 6).text().compare(QString(self.trUtf8("Not done"))) == 0:
            done = True
            item = QTableWidgetItem(self.trUtf8("Done"))	    
            item.setBackground(QBrush(Qt.green, Qt.SolidPattern))	    
        else:
            done = False		
            item = QTableWidgetItem(self.trUtf8("Not done"))	 
            item.setBackground(QBrush(Qt.red, Qt.SolidPattern))	    
        table.setItem(row, 6, item)
        table.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)
        week = (table.item(row, 0).text().toInt())[0]	
	courseFull = table.item(row, 1).text()
	courseCode = QString(getCourseCode(courseFull))
        bookTitle = table.item(row, 2).text()
	book = getBookWithTitleFromDB(bookTitle)
	bookIsbn = book.getIsbn()
        updateReadingDone(week, courseCode, bookIsbn, True)
   
    def getReadingTableAndRow(self):
        table = self.reading.readingTable
        row = table.currentRow()
        return table, row	

    def getWeekCourseAndBook(self):
        table, row = self.getReadingTableAndRow()
        weekItem = table.item(row, 0)
        courseItem = table.item(row, 1)
        bookItem = table.item(row, 2)
        week = (weekItem.text().toInt())[0]	
        courseFull = courseItem.text()
        courseCode = getCourseCode(courseFull)
        book = getBookWithTitleFromDB(bookItem.text())
        return week, courseCode, book.getIsbn()

    def addLesson(self):
        self.asdlg = AddScheduleDlg()
        self.asdlg.show()
   
    def deleteLesson(self):
        table, row, column = self.getScheduleTableRowAndColumn()	    
        day, course, time = self.getDayCourseAndTime()  
        global semester	
        removeLessonFromDB(day, course, time)   
        table.setItem(row, column, QTableWidgetItem())

    def getDayCourseAndTime(self):
        table, row, column = self.getScheduleTableRowAndColumn()
        item = table.item(row, column)
        text = item.text()
        textlist = text.split('\n')
        courseFull = textlist[0]
        coursecode = getCourseCode(courseFull)	
        day = self.getDayFromTable(column)
        time = row + 8
        return day, coursecode, time	

    def getScheduleTableRowAndColumn(self):
        table = self.schedule.scheduleTable	    
        row = table.currentRow()
        column = table.currentColumn()
        return table, row, column	

    def getDayFromTable(self, column):
        return self.days[column]

    def getLatestSemester(self, semesters):
        if len(semesters) == 0:
            return None	
        global termList
        max = semesters[0]
	for s in semesters:
            if s.getYear() > max.getYear(): 		
                max = s
            if s.getYear() == max.getYear():
                if s.getTerm() == self.trUtf8("Autumn"):
                    max = s
        return max

    def getTermList(self):
        global termList
        return termList	

    def helpAbout(self):
        QMessageBox.about(self, "About %s" % self.title, u"""
	<b>%s</b> v %s 
	<p>Copyright &copy; 2008 Tiril Anette Langfeldt Rødland. No rights reserved. 
	<p>You may modify and redistribute the program under the terms of the GPL. The license can be found here: http://www.gnu.org/licenses/gpl.html
        <p>This application is mainly for use by students, and can be used to keep track of assignments, planned readings and the schedule.
        <p>Python %s - Qt %s - PyQt %s on %s
	<p>Developer: Tiril Anette Langfeldt Rødland, tirilane@pvv.ntnu.no
	""" % (self.title, __version__, platform.python_version(), QT_VERSION_STR, PYQT_VERSION_STR, platform.system()))
    
    def addActions(self, target, actions):
        for action in actions:
            if action is None:
                target.addSeparator()
            else:
                target.addAction(action)
        
    def changeDay(self):
        global chosenDay
	chosenDay = self.calendar

    def fileNew(self):
        self.nsdlg = NewSemesterDlg()
        self.nsdlg.show()

    def fileOpen(self):
        self.osdlg = OpenSemesterDlg()
        self.osdlg.show()	
        
    def filePrint(self):
        pass
    
    def updateFileMenu(self):
        self.fileMenu.clear()
        self.addActions(self.fileMenu, self.fileMenuActions[:-1])
        current = QString(self.filename) if self.filename is not None else None
   
    def createAction(self, text, slot=None, shortcut=None, icon=None, tip=None, checkable=False, signal="triggered()"):
        action = QAction(text, self)
        if icon is not None:
            iconfile = ":/%s.png" % icon
            action.setIcon(QIcon(iconfile))
        if shortcut is not None:
            action.setShortcut(shortcut)
        if tip is not None:
            action.setToolTip(tip)
            action.setStatusTip(tip)
        if slot is not None:
            self.connect(action, SIGNAL(signal), slot)
        if checkable:
            action.setCheckable(True)
        return action

    def showCalendar(self):
        if self.calendarDockWidget.isVisible():
            self.removeDockWidget(self.calendarDockWidget)
        else:
            self.addDockWidget(Qt.BottomDockWidgetArea, self.calendarDockWidget)
            self.calendarDockWidget.setVisible(True)

    def load(self, semester):
        self.assignment.updateTable(semester)
        self.reading.updateTable(semester)
        self.schedule.updateTable(semester)	


class AssignmentTab(QWidget):
    
    def __init__(self, parent=None):
        super(AssignmentTab, self).__init__(parent)
    
        self.addAssignmentButton = QPushButton("Add assignment")
	self.completeAssignmentBox = QComboBox()
        self.deleteAssignmentButton = QPushButton("Delete assignment")
        completeTypes = [self.trUtf8("Not available"), self.trUtf8("Available"), self.trUtf8("Begun"), self.trUtf8("Finished"), self.trUtf8("Delivered"), self.trUtf8("Approved"), self.trUtf8("Not approved")]
        self.completeAssignmentBox.addItems(completeTypes)

	self.makeTable()

        self.vlayout = QVBoxLayout()
        self.hlayout = QHBoxLayout()
        
        self.hlayout.addWidget(self.addAssignmentButton)
        self.hlayout.addWidget(self.deleteAssignmentButton)
        self.hlayout.addWidget(self.completeAssignmentBox)
        self.hlayout.addStretch() 
        
        self.vlayout.addWidget(self.assignmentTable)
        self.vlayout.addLayout(self.hlayout)
        
        self.setLayout(self.vlayout)

    def makeTable(self, current=None):
        self.assignmentTable = QTableWidget(0, 5, self)
        self.assignmentTable.clear()
	self.assignmentHeaderList = QStringList()
	self.assignmentHeaderList.append(self.trUtf8("Date"))
	self.assignmentHeaderList.append(self.trUtf8("Course"))
	self.assignmentHeaderList.append(self.trUtf8("Number"))
	self.assignmentHeaderList.append(self.trUtf8("Description"))
	self.assignmentHeaderList.append(self.trUtf8("Complete"))
	self.assignmentTable.setHorizontalHeaderLabels(self.assignmentHeaderList)
        self.assignmentTable.setAlternatingRowColors(True)
        self.assignmentTable.setEditTriggers(QAbstractItemView.NoEditTriggers)
        self.assignmentTable.setSelectionBehavior(QAbstractItemView.SelectRows)
        self.assignmentTable.setSelectionMode(QAbstractItemView.SingleSelection)
        selected = None

    def updateTable(self, semester, current=None):
        self.assignments = getAssignmentsFromDB(semester)
        rows = len(self.assignments)
	self.assignmentTable.setRowCount(rows)
	for row in range(rows):
            self.addAssignmentToTable(row)		
        self.assignmentTable.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)
        self.assignmentTable.sortItems(0, Qt.AscendingOrder)

    def addAssignmentToTable(self, row, assignment=None):
        if assignment == None:
            assignment = self.assignments[row]
        complete = QString(assignment.getComplete())
        brush = self.makeBrush(complete)	    
        self.assignmentTable.setItem(row, 0, QTableWidgetItem(QString(assignment.getDate().toString("yyyy-MM-dd hh:mm, ddd"))))
        self.assignmentTable.setItem(row, 1, QTableWidgetItem(QString(assignment.getCourse().getFull())))
        self.assignmentTable.setItem(row, 2, QTableWidgetItem(QString("%i" % assignment.getNumber())))
        self.assignmentTable.setItem(row, 3, QTableWidgetItem(QString("%s" % assignment.getDescription())))
        completeItem = QTableWidgetItem(complete)
        completeItem.setBackground(brush)
        self.assignmentTable.setItem(row, 4, completeItem)

    def makeBrush(self, complete):
        brush = QBrush(Qt.NoBrush)
        if complete.compare(QString(self.trUtf8("Available"))) == 0:
            brush.setStyle(Qt.Dense7Pattern)	
            brush.setColor(QColor(Qt.cyan))
        elif complete.compare(QString(self.trUtf8("Begun"))) == 0:
            brush.setStyle(Qt.Dense5Pattern)		
            brush.setColor(QColor(Qt.cyan))
        elif complete.compare(QString(self.trUtf8("Finished"))) == 0:
            brush.setStyle(Qt.Dense3Pattern)		
            brush.setColor(QColor(Qt.cyan))
        elif complete.compare(QString(self.trUtf8("Delivered"))) == 0:
            brush.setStyle(Qt.Dense1Pattern)		
            brush.setColor(QColor(Qt.cyan))
        elif complete.compare(QString(self.trUtf8("Approved"))) == 0:
            brush.setStyle(Qt.SolidPattern)		
            brush.setColor(QColor(Qt.green))
        elif complete.compare(QString(self.trUtf8("Not approved"))) == 0:
            brush.setStyle(Qt.SolidPattern)		
            brush.setColor(QColor(Qt.red))
        else:
            brush.setStyle(Qt.NoBrush)
	return brush
        	  

class AssignmentDlg(QDialog):
    
    def __init__(self, parent=None):
        super(AssignmentDlg, self).__init__(parent)
        
        self.dateLabel = QLabel(self.trUtf8("&Date"))
        self.courseLabel = QLabel(self.trUtf8("&Course"))
	self.numberLabel = QLabel(self.trUtf8("&Number"))
        self.descriptionLabel = QLabel(self.trUtf8("De&scription"))
        self.completeLabel = QLabel(self.trUtf8("&Complete"))

	self.dateEdit = QLineEdit("DD.MM.YYYY HH:MM")
	self.dateEdit.setSelection(0, 16)
        self.courseEdit = QComboBox()
	self.courseEdit.addItems(makeCoursesString())
	self.numberEdit = QSpinBox()
	self.numberEdit.setRange(1, 20)
        self.descriptionEdit = QLineEdit()
        self.completeEdit = QComboBox()
	completeTypes = [self.trUtf8("Not available"), self.trUtf8("Available"), self.trUtf8("Begun"), self.trUtf8("Finished"), self.trUtf8("Delivered"), self.trUtf8("Approved"), self.trUtf8("Not approved")]
	self.completeEdit.addItems(completeTypes)
        
        self.dateLabel.setBuddy(self.dateEdit)
        self.courseLabel.setBuddy(self.courseEdit)
	self.numberLabel.setBuddy(self.numberEdit)
        self.descriptionLabel.setBuddy(self.descriptionEdit)
        self.completeLabel.setBuddy(self.completeEdit)
        
        self.layout = QGridLayout()
        self.layout.addWidget(self.dateLabel, 0, 0)
        self.layout.addWidget(self.courseLabel, 1, 0)
	self.layout.addWidget(self.numberLabel, 2, 0)
        self.layout.addWidget(self.descriptionLabel, 3, 0)
        self.layout.addWidget(self.completeLabel, 4, 0)
        self.layout.addWidget(self.dateEdit, 0, 1)
        self.layout.addWidget(self.courseEdit, 1, 1)
	self.layout.addWidget(self.numberEdit, 2, 1)
        self.layout.addWidget(self.descriptionEdit, 3, 1)
        self.layout.addWidget(self.completeEdit, 4, 1)
        self.setLayout(self.layout)

    def getValues(self):
        assignment = []
        assignment.append(unicode(self.dateEdit.text()))
        assignment.append(unicode(self.courseEdit.currentText()))
        assignment.append(self.numberEdit.value())
        assignment.append(unicode(self.descriptionEdit.text()))
        assignment.append(unicode(self.completeEdit.currentText()))	
        return assignment


class AddAssignmentDlg(AssignmentDlg):
    
    def __init__(self, parent=None):
        super(AddAssignmentDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        self.layout.addWidget(buttonBox, 5, 0, 1, 2)
        
        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
	self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Add new assignment"))

    def accept(self):
        assignmentList = self.getValues()	
        dateString = assignmentList[0]
        courseFull = assignmentList[1]
        number = assignmentList[2]
        description = assignmentList[3]
        complete = assignmentList[4]

        if len(dateString) <= 11:
            dateList = dateString.split('.')		
            timeList = ['00', '00']
        else:
            dateTime = dateString.split()
            dateList = dateTime[0].split('.')
            timeList = dateTime[1].split(':')
   
        date = QDate(string.atoi(dateList[2]), string.atoi(dateList[1]), string.atoi(dateList[0]))
        time = QTime(string.atoi(timeList[0]), string.atoi(timeList[1]))

        datetime = QDateTime(date, time)

        course = getCourseFromDB(getCourseCode(courseFull))

        global semester
        addNewAssignmentToDB(semester, datetime, course, number, description, complete)

        assignment = AssignmentModel(datetime, course, number, description, complete)
        table = getMain().assignment.assignmentTable
	row = table.rowCount()
	table.insertRow(row)
        getMain().assignment.addAssignmentToTable(row, assignment)
        table.sortItems(0, Qt.AscendingOrder)

        self.close()


class EditAssignmentDlg(AssignmentDlg):
    
    def __init__(self, parent=None):
        super(EditAssignmentDlg, self).__init__(parent)
        self.setAttribute(Qt.WA_DeleteOnClose)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Apply|QDialogButtonBox.Close)
        
        self.layout.addWidget(buttonBox, 8, 0, 1, 2)
        
        self.connect(buttonBox.button(QDialogButtonBox.Apply), SIGNAL("clicked()"), self.apply)
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Edit assignment"))

        assignment = self.getValues()
        self.dateEdit.setText(assignment[0])
#        self.courseEdit.setText(assignment[1])
        self.numberEdit.setValue(assignment[2])
        self.descriptionEdit.setText(assignment[3])
#        self.completeEdit.setText(assignment[4])	

    def apply(self):
        assignmentList = self.getValues()	


#        updateAssignment(assignment, assignmentList[0], assignmentList[1], assignmentList[2], assignmentList[3], assignmentList[4]) 


class AssignmentModel():

    date = None
    course = None
    number = 0
    description = ""
    complete = ""

    def __init__(self, date, course, number, description, complete):
        self.date = date
        self.course = course
        self.number = number
        self.description = description
        self.complete = complete

    def getDate(self):
        return self.date
    
    def setDate(self, date):
        self.date = date	    

    def getCourse(self):
        return self.course

    def setCourse(self, course):
        self.course = course	    

    def getNumber(self):
        return self.number
    
    def setNumber(self, number):
        self.number = number	    

    def getDescription(self):
        return self.description
    
    def setDescription(self, description):
        self.description = description	    

    def getComplete(self):
        return self.complete
    
    def setComplete(self, complete):
        self.complete = complete	    


class ReadingTab(QWidget):

    def __init__(self, parent=None):
        super(ReadingTab, self).__init__(parent)
        
        self.addReadingButton = QPushButton(self.trUtf8("Add pages to read"))
        self.deleteReadingButton = QPushButton(self.trUtf8("Delete pages"))
        self.readingDoneButton = QPushButton(self.trUtf8("Done"))
        
        self.makeTable()

        self.vlayout = QVBoxLayout()
        self.hlayout = QHBoxLayout()
        
        self.hlayout.addWidget(self.addReadingButton)
        self.hlayout.addWidget(self.deleteReadingButton)
        self.hlayout.addWidget(self.readingDoneButton)
        self.hlayout.addStretch()

        self.vlayout.addWidget(self.readingTable)
        self.vlayout.addLayout(self.hlayout)
        
        self.setLayout(self.vlayout)

    def makeTable(self, current=None):
        self.readingTable = QTableWidget(0, 7, self)
        self.readingTable.clear()
	self.readingHeaderList = QStringList()
	self.readingHeaderList.append(self.trUtf8("Week"))
	self.readingHeaderList.append(self.trUtf8("Course"))
	self.readingHeaderList.append(self.trUtf8("Book"))
	self.readingHeaderList.append(self.trUtf8("Chapter"))
	self.readingHeaderList.append(self.trUtf8("Pages"))
	self.readingHeaderList.append(self.trUtf8("Number of pages"))
        self.readingHeaderList.append(self.trUtf8("Done"))	
	self.readingTable.setHorizontalHeaderLabels(self.readingHeaderList)
        self.readingTable.setAlternatingRowColors(True)
        self.readingTable.setEditTriggers(QAbstractItemView.NoEditTriggers)
        self.readingTable.setSelectionBehavior(QAbstractItemView.SelectRows)
        self.readingTable.setSelectionMode(QAbstractItemView.SingleSelection)
        selected = None
        
    def updateTable(self, semester):
        self.readings = getReadingsFromDB(semester)	
        rows = len(self.readings)
        self.readingTable.setRowCount(rows)	
        for row in range(rows):
            self.addReadingToTable(row)
        self.readingTable.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)
        self.readingTable.sortItems(0, Qt.AscendingOrder)

    def addReadingToTable(self, row, reading=None):
        if reading == None:
            reading = self.readings[row]
        
        brush = QBrush(Qt.NoBrush)
        brush.setStyle(Qt.SolidPattern)

        if reading.getDone():
           doneString = self.trUtf8("Done")
	   brush.setColor(Qt.green)
        else:
           doneString = self.trUtf8("Not done")
           brush.setColor(Qt.red)	   

        self.readingTable.setItem(row, 0, QTableWidgetItem(QString("%02s" % reading.getWeek())))	
        self.readingTable.setItem(row, 1, QTableWidgetItem(QString(reading.getCourse().getFull())))	    
        self.readingTable.setItem(row, 2, QTableWidgetItem(QString(reading.getBook().getTitle())))
	self.readingTable.setItem(row, 3, QTableWidgetItem(QString(reading.getChapter())))
        self.readingTable.setItem(row, 4, QTableWidgetItem(QString(reading.getPages())))
	self.readingTable.setItem(row, 5, QTableWidgetItem(QString("%i" % reading.getNumberOfPages())))
        item = QTableWidgetItem(QString(doneString))
	item.setBackground(brush)
        self.readingTable.setItem(row, 6, item)


class ReadingDlg(QDialog):
    
    def __init__(self, parent=None):
        super(ReadingDlg, self).__init__(parent)
        
        self.weekLabel = QLabel(self.trUtf8("&Week"))
        self.courseLabel = QLabel(self.trUtf8("&Course"))
        self.bookLabel = QLabel(self.trUtf8("&Book"))
        self.chapterLabel = QLabel(self.trUtf8("Cha&pter"))
        self.pagesLabel = QLabel(self.trUtf8("&Pages"))
        
        self.weekEdit = QSpinBox()
        self.weekEdit.setRange(1, 52)
        self.courseEdit = QComboBox()
        coursesStringList = QStringList()
        courses = makeCoursesString()
        for course in courses:
            coursesStringList.append(course)		
        self.courseEdit.addItems(coursesStringList)
        self.bookEdit = QComboBox()
        booksStringList = QStringList()
        books = makeBooksString()
        for book in books:
            booksStringList.append(book)
	self.bookEdit.addItems(booksStringList)
        self.chapterEdit = QLineEdit()
        self.pagesEdit = QLineEdit()
        
        self.weekLabel.setBuddy(self.weekEdit)
        self.courseLabel.setBuddy(self.courseEdit)
        self.bookLabel.setBuddy(self.bookEdit)
        self.chapterLabel.setBuddy(self.chapterEdit)
        self.pagesLabel.setBuddy(self.pagesEdit)
        
        self.layout = QGridLayout()
        self.layout.addWidget(self.weekLabel, 0, 0)
        self.layout.addWidget(self.courseLabel, 1, 0)
        self.layout.addWidget(self.bookLabel, 2, 0)
        self.layout.addWidget(self.chapterLabel, 3, 0)
        self.layout.addWidget(self.pagesLabel, 4, 0)
        self.layout.addWidget(self.weekEdit, 0, 1)
        self.layout.addWidget(self.courseEdit, 1, 1)
        self.layout.addWidget(self.bookEdit, 2, 1)
        self.layout.addWidget(self.chapterEdit, 3, 1)
        self.layout.addWidget(self.pagesEdit, 4, 1)
        self.setLayout(self.layout)


class AddReadingDlg(ReadingDlg):
    
    def __init__(self, parent=None):
        super(AddReadingDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        self.layout.addWidget(buttonBox, 5, 0, 1, 2)
        
        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Add new reading"))

    def accept(self):
        week = unicode(self.weekEdit.value())
        courseFull = unicode(self.courseEdit.currentText())
        bookTitle = unicode(self.bookEdit.currentText())
        chapter = unicode(self.chapterEdit.text())
        pages = unicode(self.pagesEdit.text())

	self.close()

        course = getCourseFromDB(getCourseCode(courseFull))
	book = getBookWithTitleFromDB(bookTitle)

        global semester
	addNewReadingToDB(semester, week, course, book, chapter, pages, False)

        reading = ReadingModel(week, course, book, chapter, pages, False)
        table = getMain().reading.readingTable
        row = table.rowCount()
	table.insertRow(row)
	getMain().reading.addReadingToTable(row, reading)
	table.sortItems(0, Qt.AscendingOrder)


class EditReadingDlg(ReadingDlg):
    
    def __init__(self, parent=None):
        super(EditReadingDlg, self).__init__(parent)
        self.setAttribute(Qt.WA_DeleteOnClose)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Apply|QDialogButtonBox.Close)
        
        self.layout.addWidget(buttonBox, 5, 0, 1, 2)
        
        self.connect(buttonBox.button(QDialogButtonBox.Apply), SIGNAL("clicked()"), self.apply)
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Edit reading"))

    def apply(self):
        pass


class ReadingModel():

    week = 0
    course = None
    book = None
    chapter = ""
    pages = ""
    numberOfPages = 0
    done = False

    def __init__(self, week, course, book, chapter, pages, done=False):
        self.week = week
        self.course = course	
        self.book = book
        self.chapter = chapter
        self.pages = pages
        self.numberOfPages = self.getNumberOfPages()	
        self.done = done	

    def getWeek(self):
        return self.week
    
    def setWeek(self, week):
        self.week = week	    

    def getCourse(self):
        return self.course
    
    def setCourse(self, course):
        self.course = course	    

    def getBook(self):
        return self.book
    
    def setBook(self, book):
        self.book = book	    

    def getChapter(self):
        return self.chapter
    
    def setChapter(self, chapter):
        self.chapter = chapter	    

    def getPages(self):
        return self.pages
    
    def setPages(self, pages):
        self.pages = pages	    

    def getNumberOfPages(self):
        pages = self.getPages()
        pagesArray = pages.split(",")
        nextArray = []
        sum = 0
        for p in pagesArray:
            p.strip()		
            nextArray.append(p.split("-"))
        for n in nextArray:
            sum += int(n[1]) - int(n[0])
        return sum

    def getDone(self):
        return self.done	    

    def setDone(self, done):
        self.done = done	    


class ScheduleTab(QWidget):
    
    def __init__(self, parent=None):
        super(ScheduleTab, self).__init__(parent)
        
        self.addScheduleButton = QPushButton("Add lesson")
        self.deleteScheduleButton = QPushButton("Delete lesson")
        
        self.makeTable()

        self.vlayout = QVBoxLayout()
        self.hlayout = QHBoxLayout()
        
        self.hlayout.addWidget(self.addScheduleButton)
        self.hlayout.addWidget(self.deleteScheduleButton)
	self.hlayout.addStretch()

        self.vlayout.addWidget(self.scheduleTable)
        self.vlayout.addLayout(self.hlayout)
        
        self.setLayout(self.vlayout)

    def makeTable(self, current=None):
        self.scheduleTable = QTableWidget(12, 5, self)
        self.scheduleTable.clear()
        self.scheduleHorizontalHeaderList = QStringList()
        self.scheduleHorizontalHeaderList.append(self.trUtf8("Monday"))
        self.scheduleHorizontalHeaderList.append(self.trUtf8("Tuesday"))
        self.scheduleHorizontalHeaderList.append(self.trUtf8("Wednesday"))
        self.scheduleHorizontalHeaderList.append(self.trUtf8("Thursday"))
        self.scheduleHorizontalHeaderList.append(self.trUtf8("Friday"))
        self.scheduleVerticalHeaderList = QStringList()
        for i in range(8, 20):
           self.scheduleVerticalHeaderList.append(self.trUtf8("%i" % i))
        self.scheduleTable.setHorizontalHeaderLabels(self.scheduleHorizontalHeaderList)
        self.scheduleTable.setVerticalHeaderLabels(self.scheduleVerticalHeaderList)
        self.scheduleTable.setAlternatingRowColors(True)
        self.scheduleTable.setEditTriggers(QAbstractItemView.NoEditTriggers)
        self.scheduleTable.setSelectionBehavior(QAbstractItemView.SelectItems)
        self.scheduleTable.setSelectionMode(QAbstractItemView.SingleSelection)
        selected = None
	
    def updateTable(self, semester):
        self.schedule = getLessonsFromDB(semester)
        rows = len(self.schedule)
        self.scheduleTable.setRowCount(rows)	
        for l in range(rows):
            self.addLessonToTable(self.schedule[l])    
        self.scheduleTable.horizontalHeader().setResizeMode(QHeaderView.ResizeToContents)
        self.scheduleTable.verticalHeader().setResizeMode(QHeaderView.ResizeToContents)

    def addLessonToTable(self, lesson):
        row = lesson.getTime() - 8	
        column = self.getColumn(lesson.getDay())
	course = lesson.getCourse().getFull()
	type = lesson.getType()
	room = lesson.getRoom()
        item = QTableWidgetItem(QString("%s\n%s\n%s" % (course, type, room)))
	item.setBackground(self.getBackground(QString("%s" % type), lesson.getCourse()))
        self.scheduleTable.setItem(row, column, item)
    
    def getColumn(self, dayString):
        day = QString("%s" % dayString)	    
        if day.compare(QString(self.trUtf8("Monday"))) == 0:
           return 0
        elif day.compare(QString(self.trUtf8("Tuesday"))) == 0:
           return 1
        elif day.compare(QString(self.trUtf8("Wednesday"))) == 0:
           return 2		
        elif day.compare(QString(self.trUtf8("Thursday"))) == 0:
           return 3		
        elif day.compare(QString(self.trUtf8("Friday"))) == 0:
           return 4
        else:
           return -1		

    def getBackground(self, type, course):
        if type.compare(QString(self.trUtf8("Lecture"))) == 0:
            brush = QBrush(Qt.HorPattern)
        elif type.compare(QString(self.trUtf8("Assignment lecture"))) == 0:
            brush = QBrush(Qt.CrossPattern)
        elif type.compare(QString(self.trUtf8("Assignment help"))) == 0:
            brush = QBrush(Qt.VerPattern)
        elif type.compare(QString(self.trUtf8("Lab"))) == 0:
            brush = QBrush(Qt.BDiagPattern)
        elif type.compare(QString(self.trUtf8("Seminar"))) == 0:
            brush = QBrush(Qt.FDiagPattern)
        elif type.compare(QString(self.trUtf8("Other"))) == 0:	    
            brush = QBrush(Qt.DiagCrossPattern)
        else:
            brush = QBrush(Qt.NoBrush)		
        brush.setColor(course.getColor())

        return brush	    


class ScheduleDlg(QDialog):
    
    def __init__(self, parent=None):
        super(ScheduleDlg, self).__init__(parent)
        
        self.dayLabel = QLabel(self.trUtf8("&Day"))
        self.fromLabel = QLabel(self.trUtf8("&From"))
        self.toLabel = QLabel(self.trUtf8("&To"))
        self.courseLabel = QLabel(self.trUtf8("&Course"))
        self.typeLabel = QLabel(self.trUtf8("Ty&pe"))
        self.roomLabel = QLabel(self.trUtf8("&Room"))
        
        self.dayEdit = QComboBox()
        self.dayEdit.addItems(getMain().days)
        self.fromEdit = QSpinBox()
        self.fromEdit.setRange(08.15, 18.15)
        self.fromEdit.setSingleStep(01.00)
        self.toEdit = QSpinBox()
        self.toEdit.setRange(09.00, 19.00)
        self.toEdit.setSingleStep(01.00)
        self.courseEdit = QComboBox()
        courses = makeCoursesString()
	coursesStringList = QStringList()
        for course in courses:
            coursesStringList.append(course)		
        self.courseEdit.addItems(coursesStringList)
        self.typeEdit = QComboBox()
	types = [self.trUtf8("Lecture"), self.trUtf8("Assignment lecture"), self.trUtf8("Assignment help"), self.trUtf8("Lab"), self.trUtf8("Seminar"), self.trUtf8("Other")]
	self.typeEdit.addItems(types)
        self.roomEdit = QLineEdit()
        
        self.dayLabel.setBuddy(self.dayEdit)
        self.fromLabel.setBuddy(self.fromEdit)
        self.toLabel.setBuddy(self.toEdit)
        self.courseLabel.setBuddy(self.courseEdit)
        self.typeLabel.setBuddy(self.typeEdit)
        self.roomLabel.setBuddy(self.roomEdit)
        
        self.layout = QGridLayout()
        self.layout.addWidget(self.dayLabel, 0, 0)
        self.layout.addWidget(self.fromLabel, 1, 0)
        self.layout.addWidget(self.toLabel, 2, 0)
        self.layout.addWidget(self.courseLabel, 3, 0)
        self.layout.addWidget(self.typeLabel, 4, 0)
        self.layout.addWidget(self.roomLabel, 5, 0)
        self.layout.addWidget(self.dayEdit, 0, 1)
        self.layout.addWidget(self.fromEdit, 1, 1)
        self.layout.addWidget(self.toEdit, 2, 1)
        self.layout.addWidget(self.courseEdit, 3, 1)
        self.layout.addWidget(self.typeEdit, 4, 1)
        self.layout.addWidget(self.roomEdit, 5, 1)
        self.setLayout(self.layout)


class AddScheduleDlg(ScheduleDlg):
    
    def __init__(self, parent=None):
        super(AddScheduleDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        self.layout.addWidget(buttonBox, 6, 0, 1, 2)
        
        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Add new lesson"))

    def accept(self):
        day = unicode(self.dayEdit.currentText())
	fromtime = self.fromEdit.value()
	totime = self.toEdit.value()
        courseFull = unicode(self.courseEdit.currentText())
        type = unicode(self.typeEdit.currentText())
	room = unicode(self.roomEdit.text())

        course = getCourseFromDB(getCourseCode(courseFull))
       
        global semester
        for t in range(fromtime, totime):
            addNewLessonToDB(semester, day, t, course, type, room)
            getMain().schedule.addLessonToTable(ScheduleModel(day, t, course, type, room))
	
        self.close()


class EditScheduleDlg(ScheduleDlg):
    
    def __init__(self, parent=None):
        super(EditScheduleDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Apply|QDialogButtonBox.Close)
        
        self.layout.addWidget(buttonBox, 6, 0, 1, 2)
        
        self.connect(buttonBox.button(QDialogButtonBox.Apply), SIGNAL("clicked()"), self.apply)
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Edit lesson"))

    def apply(self):
        pass


class ScheduleModel():
    
    day = ""
    time = 0
    course = None
    type = ""
    room = ""
    
    def __init__(self, day, time, course, type, room):
        self.day = day
        self.time = time
        self.course = course
        self.type = type
        self.room = room

    def getDay(self):
        return self.day
   
    def setDay(self, day):
        self.day = day	    

    def getTime(self):
        return self.time
    
    def setTime(self, fromTime):
        self.time = time 

    def getCourse(self):
        return self.course
    
    def setCourse(self, course):
        self.course = course	    

    def getType(self):
        return self.type
    
    def setType(self, type):
        self.type = type	    

    def getRoom(self):
	    return self.room

    def setRoom(self, room):
        self.room = room	    


class CourseDlg(QDialog):
        
    def __init__(self, parent=None):
        super(CourseDlg, self).__init__(parent)
        
        self.books = []

        self.codeLabel = QLabel(self.trUtf8("&Code"))
        self.titleLabel = QLabel(self.trUtf8("&Title"))
        self.shortLabel = QLabel(self.trUtf8("&Short form"))
        self.booksLabel = QLabel(self.trUtf8("&Books"))        

        self.codeEdit = QLineEdit()
        self.titleEdit = QLineEdit()
        self.shortEdit = QLineEdit()
        self.booksEdit = QListWidget()
	self.updateList()
        self.booksEdit.setSelectionMode(QAbstractItemView.ExtendedSelection)
        
        self.newBook = QPushButton("Add new book")
	self.connect(self.newBook, SIGNAL("pressed()"), getMain().addBook)
        self.connect(getMain(), SIGNAL("newBook"), self.updateList)

	self.codeLabel.setBuddy(self.codeEdit)
        self.titleLabel.setBuddy(self.titleEdit)
        self.shortLabel.setBuddy(self.shortEdit)
        self.booksLabel.setBuddy(self.booksEdit)

        self.layout = QGridLayout()
        self.layout.addWidget(self.codeLabel, 0, 0)
        self.layout.addWidget(self.titleLabel, 1, 0)
        self.layout.addWidget(self.shortLabel, 2, 0)
	self.layout.addWidget(self.booksLabel, 3, 0)
        self.layout.addWidget(self.codeEdit, 0, 1)
        self.layout.addWidget(self.titleEdit, 1, 1)
        self.layout.addWidget(self.shortEdit, 2, 1)
	self.layout.addWidget(self.booksEdit, 3, 1)
	self.layout.addWidget(self.newBook, 4, 0)
        self.setLayout(self.layout)

    def updateList(self):
        self.booksEdit.clear()
        booksDB = getBooksFromDB()
        booksStringList = QStringList()
        for book in booksDB:
            booksStringList.append(book.getTitle())		
        self.booksEdit.addItems(booksStringList)
        self.booksEdit.sortItems()	
        	    
    def addNewBookToCourse(self):
        book = getBookWithTitleFromDB(booktitle)
        self.books.append(book)	


class AddCourseDlg(CourseDlg):
    
    def __init__(self, parent=None):
        super(AddCourseDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        self.layout.addWidget(buttonBox, 4, 1, 1, 2)
        
        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Add new course"))

    def accept(self):
        courseCode = unicode(self.codeEdit.text())
        courseTitle = unicode(self.titleEdit.text())
        courseShort = unicode(self.shortEdit.text())	
	courseBooks = self.booksEdit.selectedItems()
	color = getRandomColor()
	global colors
        while color in colors:
            color = getRandomColor()			
        colors.append(color)		
        books = []	
	for book in courseBooks:
            books.append(getBookWithTitleFromDB("%s" % book.text()))
        course = CourseModel(courseCode, courseTitle, courseShort, color, books)
        addNewCourseToDB(courseCode, courseTitle, courseShort, color, books)
        self.close()


class CourseModel():
	
    code = ""
    title = ""
    short = ""
    full = ""
    books = []

    def __init__(self, code, title, short, color, books):
        self.code = code
        self.title = title
        self.short = short
        self.setFull(code, title)
        self.color = color
        self.books = books

    def getCode(self):
        return self.code

    def getTitle(self):
        return self.title
	
    def getShort(self):
        return self.short

    def setFull(self, code, title):
        self.full = code + ' ' + title

    def getFull(self):
        return self.full

    def getColor(self):
        return self.color	    

    def addBook(self, book):
        books.append(book)

    def getBooks(self):
        return self.books	    


class BookDlg(QDialog):
        
    def __init__(self, parent=None):
        super(BookDlg, self).__init__(parent)
        
        self.titleLabel = QLabel(self.trUtf8("&Title"))
        self.authorLabel = QLabel(self.trUtf8("&Author"))
        self.editionLabel = QLabel(self.trUtf8("&Edition"))
        self.isbnLabel = QLabel(self.trUtf8("&ISBN"))
        
        self.titleEdit = QLineEdit()
        self.authorEdit = QLineEdit()
        self.editionEdit = QSpinBox()
        self.editionEdit.setRange(1, 50)
        self.isbnEdit = QLineEdit()

        self.titleLabel.setBuddy(self.titleEdit)
        self.authorLabel.setBuddy(self.authorEdit)
        self.editionLabel.setBuddy(self.editionEdit)
        self.isbnLabel.setBuddy(self.isbnEdit)
        
        self.layout = QGridLayout()
        self.layout.addWidget(self.titleLabel, 0, 0)
        self.layout.addWidget(self.authorLabel, 1, 0)
        self.layout.addWidget(self.editionLabel, 2, 0)
        self.layout.addWidget(self.isbnLabel, 3, 0)
        self.layout.addWidget(self.titleEdit, 0, 1)
        self.layout.addWidget(self.authorEdit, 1, 1)
        self.layout.addWidget(self.editionEdit, 2, 1)
        self.layout.addWidget(self.isbnEdit, 3, 1)
        self.setLayout(self.layout)


class AddBookDlg(BookDlg):
    
    def __init__(self, parent=None):
        super(AddBookDlg, self).__init__(parent)
        
        buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        self.layout.addWidget(buttonBox, 4, 0, 1, 2)
        
        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))
        
        self.setWindowTitle(self.trUtf8("Add new book"))

    def accept(self):
        bookTitle = unicode(self.titleEdit.text())
        bookAuthor = unicode(self.authorEdit.text())
        bookEdition = self.editionEdit.value()
        bookIsbn = unicode(self.isbnEdit.text())
        addNewBookToDB(bookIsbn, bookTitle, bookAuthor, bookEdition)	
        getMain().emit(SIGNAL("newBook"))
        self.close()


class BookModel():

    title = ""
    author = ""
    edition = 0
    isbn = ""

    def __init__(self, isbn, title, author, edition):
	self.isbn = isbn
        self.title = title
	self.author = author
	self.edition = edition

    def getIsbn(self):
        return self.isbn

    def getTitle(self):
        return self.title

    def getAuthor(self):
        return self.author

    def getEdition(self):
        return self.edition


class SemesterDlg(QDialog):
    
    def __init__(self, parent=None):	
        super(SemesterDlg, self).__init__(parent)

        self.oldLabel = QLabel(self.trUtf8("Earlier semesters:"))
        self.newLabel = QLabel(self.trUtf8("New semester:"))	
        self.newTermLabel = QLabel(self.trUtf8("Term:"))
        self.newYearLabel = QLabel(self.trUtf8("Year:"))	

        global semester, semesters, main

        self.oldEdit = QListWidget()
        self.oldEdit.addItems(semesters)
        self.newTermEdit = QComboBox()
	self.newTermEdit.addItems(getMain().getTermList())
        self.newYearEdit = QSpinBox()
        self.newYearEdit.setRange(2000, 2050)	
	self.newYearEdit.setSingleStep(1)

        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
        
        layout = QGridLayout()
        layout.addWidget(self.oldLabel, 0, 0)
        layout.addWidget(self.oldEdit, 0, 1, 1, 2)
        layout.addWidget(self.newLabel, 1, 0)
        layout.addWidget(self.newTermLabel, 1, 1)	
        layout.addWidget(self.newTermEdit, 2, 1)
        layout.addWidget(self.newYearLabel, 1, 2)
        layout.addWidget(self.newYearEdit, 2, 2)	
        layout.addWidget(self.buttonBox, 3, 0, 1, 3)
        layout.setColumnStretch(0, 0)
	layout.setColumnStretch(1, 1)
	layout.setColumnStretch(2, 1)
	self.setLayout(layout)

        self.connect(buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))

        self.setWindowTitle(self.trUtf8("Choose a semester or create a new"))
        
    def accept(self):
        pass	    


class NewSemesterDlg(QDialog):

    def __init__(self, parent=None):
        super(NewSemesterDlg, self).__init__(parent)

        self.termLabel = QLabel(self.trUtf8("Term"))
        self.yearLabel = QLabel(self.trUtf8("Year"))
        self.termEdit = QComboBox()
        self.yearEdit = QSpinBox()
        self.termEdit.addItems(getMain().getTermList())
        self.yearEdit.setRange(2000, 2050)
        self.yearEdit.setSingleStep(1)
        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)
	
        layout = QGridLayout()
        layout.addWidget(self.termLabel, 0, 0)
        layout.addWidget(self.termEdit, 0, 1)
        layout.addWidget(self.yearLabel, 1, 0)
        layout.addWidget(self.yearEdit, 1, 1)
        layout.addWidget(self.buttonBox, 2, 1)	
        self.setLayout(layout)

        self.connect(self.buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(self.buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))

        self.setWindowTitle(self.trUtf8("New semester"))
	
    def accept(self):
        term = unicode(self.termEdit.currentText())
        year = self.yearEdit.value()
	global semester
	semester = SemesterModel(term, year)
        addNewSemesterToDB(term, year)
        getMain().load(semester)	
        self.close()	


class OpenSemesterDlg(QDialog):

    def __init__(self, parent=None):
        super(OpenSemesterDlg, self).__init__(parent)

        self.semesterList = QListWidget()
        semesters = getSemestersFromDB()        
        semesterlist = QStringList()
        for semester in semesters:
            semesterlist.append("%s %i" % (semester.getTerm(), semester.getYear()))
        self.semesterList.addItems(semesterlist)	   
        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|QDialogButtonBox.Cancel)

        layout = QVBoxLayout()
        layout.addWidget(self.semesterList)
        layout.addStretch()
	layout.addWidget(self.buttonBox)
        self.setLayout(layout)

        self.connect(self.buttonBox, SIGNAL("accepted()"), self, SLOT("accept()"))
        self.connect(self.buttonBox, SIGNAL("rejected()"), self, SLOT("reject()"))

        self.setWindowTitle(self.trUtf8("Open semester"))
	
    def accept(self):
        text = self.semesterList.currentItem().text()
        textlist = text.split(' ')
        term = textlist[0]
        year = textlist[1].toInt()[0]	
        global semester
        semester = SemesterModel(term, year)
        semester.setAssignments(getAssignmentsFromDB(semester))
        semester.setReadings(getReadingsFromDB(semester))
        semester.setLessons(getLessonsFromDB(semester))
        print semester.getAssignments()
        print semester.getReadings()
        print semester.getLessons()	
        getMain().load(semester)
        self.close()	


class SemesterModel():
    
    term = ""
    year = 0
    assignments = []
    readings = []
    lessons = []

    def __init__(self, term, year):
        self.term = term
        self.year = year

    def getTerm(self):
        return self.term

    def getYear(self):
        return self.year

    def addAssignment(self, assignment):
        self.assignments.append(assignment)

    def setAssignments(self, assignments):
        self.assignments = assignments

    def getAssignments(self):
        return self.assignments

    def addReading(self, reading):
        self.readings.append(reading)

    def setReadings(self, readings):
        self.readings = readings

    def getReadings(self):
        return self.readings

    def addLesson(self, lesson):
        self.lessons.append(lesson)
 
    def setLessons(self, lessons):
        self.lessons = lessons

    def getLessons(self):
        return self.lessons	    


class CalendarTab(QWidget):
    
    def __init__(self, parent=None):
        super(CalendarTab, self).__init__(parent)
        
        calendar = QCalendarWidget()
        calendar.setFirstDayOfWeek(Qt.Monday)

        layout = QVBoxLayout()
        layout.addWidget(calendar)
        self.setLayout(layout)


def initDB():
    conn = sqlite.connect('egon.db')
    curs = conn.cursor()
    return curs, conn

def initNewDB():
    cursor, conn = initDB()
    initSemesterDB(cursor)
    initAssignmentDB(cursor)
    initReadingDB(cursor)
    initScheduleDB(cursor)
    initBookDB(cursor)
    initCourseDB(cursor)
    initCourseUsesBook(cursor)
    exitDB(conn)

def initSemesterDB(cursor):
    cursor.execute('''
        CREATE TABLE Semester (
            term TEXT,
            year INT,
            PRIMARY KEY (term, year)
        )
    ''')

def initAssignmentDB(cursor):
    cursor.execute('''
        CREATE TABLE Assignment (
            date DATETIME,
	    course TEXT,
            number INT,
	    description TEXT,
	    complete TEXT,
	    term TEXT,
            year INT,	    
            PRIMARY KEY (course, number)
        )
    ''')

def initReadingDB(cursor):
    cursor.execute('''
        CREATE TABLE Reading (
            week INT,
	    course TEXT,
	    book INT,
            chapter TEXT,
            pages TEXT,
            done BOOLEAN,	    
            term TEXT,
            year INT,	    
            PRIMARY KEY (week, course, book)
        )
    ''')

def initScheduleDB(cursor):
    cursor.execute('''
        CREATE TABLE Lesson (
            day TEXT,
            time INT,
	    course TEXT,
            type TEXT,
            room TEXT,
            term TEXT,
            year INT,	    
            PRIMARY KEY (course, day, time)
        )
    ''')

def initBookDB(cursor):
    cursor.execute('''
        CREATE TABLE Book (
            isbn TEXT PRIMARY KEY,
            title TEXT,
            author TEXT,
            edition INTEGER
        )
    ''')

def initCourseDB(cursor):
    cursor.execute('''
        CREATE TABLE Course (
            code TEXT PRIMARY KEY,
            title TEXT,
            short TEXT,
            red INT, 
            green INT,
            blue INT	    
        )
    ''')

def initCourseUsesBook(cursor):
    cursor.execute('''
        CREATE TABLE CourseUsesBook (
            courseCode TEXT,
            bookIsbn TEXT,
	    PRIMARY KEY (courseCode, bookIsbn)
	)
    ''')

def addNewSemesterToDB(term, year):
    cursor, conn = initDB()
        
    cursor.execute('''
        INSERT INTO Semester (term, year)
        VALUES (?, ?)	
    ''', (term, year))

    exitDB(conn)

def addNewAssignmentToDB(semester, datetime, course, number, description, complete):
    cursor, conn = initDB()

    day = datetime.date().day()
    month = datetime.date().month()
    year = datetime.date().year()
    hour = datetime.time().hour()
    minute = datetime.time().minute()
    timestring = "%02i-%02i-%02i %02i:%02i" % (year, month, day, hour, minute)
    term = "%s" % semester.getTerm()
    year = semester.getYear() 

    cursor.execute('''
        INSERT INTO Assignment (date, course, number, description, complete, term, year)
	VALUES (datetime(?), ?, ?, ?, ?, ?, ?)
    ''', (timestring, course.getCode(), number, description, complete, term, year))

    exitDB(conn)

def addNewReadingToDB(semester, week, course, book, chapter, pages, done):
    cursor, conn = initDB()

    cursor.execute('''
        INSERT INTO Reading (week, course, book, chapter, pages, done, term, year)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?)	
    ''', (week, course.getCode(), book.getIsbn(), chapter, pages, done, semester.getTerm(), semester.getYear()))

    exitDB(conn)

def addNewLessonToDB(semester, day, time, course, type, room):
    cursor, conn = initDB()

    cursor.execute('''
        INSERT INTO Lesson (day, time, course, type, room, term, year)
        VALUES (?, ?, ?, ?, ?, ?, ?)	
    ''', (day, time, course.getCode(), type, room, semester.getTerm(), semester.getYear()))

    exitDB(conn)

def addNewCourseToDB(code, title, short, color, books):
    cursor, conn = initDB()
   
    red = color.red()
    green = color.green()
    blue = color.blue()    

    cursor.execute('''
        INSERT INTO Course (code, title, short, red, green, blue)
        VALUES (?, ?, ?, ?, ?, ?)
    ''', (code, title, short, red, green, blue))
    
    for book in books:
        cursor.execute('''
            INSERT INTO CourseUsesBook (courseCode, bookIsbn)
            VALUES (?, ?)	    
        ''', (code, book.getIsbn()))

    exitDB(conn)

def addNewBookToDB(isbn, title, author, edition):
    cursor, conn = initDB()
    
    cursor.execute('''
        INSERT INTO Book 
        VALUES (?, ?, ?, ?)
    ''', (isbn, title, author, edition))
    
    exitDB(conn)

def getAssignmentsFromDB(semester):
    cursor, conn = initDB()

    term = "%s" % semester.getTerm()
    year = (semester.getYear())

    cursor.execute('''
        SELECT * 
        FROM Assignment	
        WHERE term = ?
        AND year = ?	
    ''', (term, year))

    assignments = []
    for row in cursor.fetchall():
        assignments.append(AssignmentModel(getQDateTime(row[0]), getCourseFromDB(row[1]), row[2], row[3], row[4]))

    exitDB(conn)

    return assignments

def getQDateTime(timestamp):
    if not timestamp:
        return None		
    datetimeList = timestamp.split()
    dateString = datetimeList[0]
    timeString = datetimeList[1]
    dateList = dateString.split('-')
    timeList = timeString.split(':')
    year = string.atoi(dateList[0])
    month = string.atoi(dateList[1])
    day = string.atoi(dateList[2])
    hour = string.atoi(timeList[0])
    minute = string.atoi(timeList[1])
    date = QDate(year, month, day)
    time = QTime(hour, minute)
    datetime = QDateTime(date, time)
    return datetime

def getReadingsFromDB(semester):
    cursor, conn = initDB()

    term = "%s" % semester.getTerm()
    year = semester.getYear() 

    cursor.execute('''
        SELECT * 
        FROM Reading
        WHERE term = ?
        AND year = ?	
    ''', (term, year))

    readings = []
    for row in cursor.fetchall():
        readings.append(ReadingModel(row[0], getCourseFromDB(row[1]), getBookFromDB(row[2]), row[3], row[4], row[5]))

    exitDB(conn)

    return readings

def getLessonsFromDB(semester):
    cursor, conn = initDB()

    term = "%s" % semester.getTerm()
    year = semester.getYear()

    cursor.execute('''
        SELECT * 
        FROM Lesson
        WHERE term = ?
        AND year = ?	
    ''', (term, year))

    lessons = []
    for row in cursor.fetchall():
        lessons.append(ScheduleModel(row[0], row[1], getCourseFromDB(row[2]), row[3], row[4]))

    exitDB(conn)

    return lessons

def getCoursesFromDB():
    cursor, conn = initDB()

    cursor.execute('''
        SELECT *
        FROM Course
    ''')

    courses = []
    for row in cursor.fetchall():
	courses.append(CourseModel(row[0], row[1], row[2], QColor(row[3], row[4], row[5]), []))

    for course in courses:
        cursor.execute('''
            SELECT bookIsbn 
            FROM CourseUsesBook	
	    WHERE courseCode = ?
        ''', (course.getCode(),))
	fetched = cursor.fetchall()
        for fetchedRow in fetched:
            cursor.execute('''
                SELECT *
                FROM Book
                WHERE isbn = ?		
            ''', (fetchedRow[0],))
            for row in cursor:
                course.addBook(BookModel(row[0], row[1], row[2], row[3]))

    return courses

def getCourseFromDB(courseCode):
    cursor, conn = initDB()

    cursor.execute('''
        SELECT * 
        FROM Course
        WHERE code = ?	
    ''', (courseCode,))

    course = None

    for row in cursor.fetchall():
        course = CourseModel(row[0], row[1], row[2], QColor(row[3], row[4], row[5]), [])

    cursor.execute('''
        SELECT bookIsbn 
        FROM CourseUsesBook
        WHERE courseCode = ?	
    ''', (courseCode,))
    fetched = cursor.fetchall()
    for fetchedRow in fetched:
        cursor.execute('''
            SELECT *
            FROM Book
            WHERE isbn = ?	    
        ''', (fetchedRow[0],))
        for row in cursor:
            course.addBook(BookModel(row[0], row[1], row[2], row[3]))		

    exitDB(conn)

    return course

def getBooksFromDB():
    cursor, conn = initDB()

    cursor.execute('''
        SELECT * 
        FROM Book
    ''')

    books = []
    for row in cursor.fetchall():
	books.append(BookModel(row[0], row[1], row[2], row[3])) 
       	    
    exitDB(conn)
    
    return books

def getBookFromDB(isbn):
    cursor, conn = initDB()

    cursor.execute('''
        SELECT * 
        FROM Book
        WHERE isbn = ?	
    ''', (isbn,))
    
    for row in cursor.fetchall():
        book = BookModel(row[0], row[1], row[2], row[3])

    exitDB(conn)

    return book	

def getBookWithTitleFromDB(booktitle):
    cursor, conn = initDB()

    book = "%s" % booktitle

    cursor.execute('''
        SELECT * 
        FROM Book
        WHERE title = ?	
    ''', (book,))

    for row in cursor.fetchall():
        book = BookModel(row[0], row[1], row[2], row[3])	    

    exitDB(conn)

    return book

def getSemestersFromDB():
    cursor, conn = initDB()
  
    cursor.execute('''
        SELECT * 
        FROM Semester	
    ''')

    semesters = []
    for row in cursor.fetchall():
        semesters.append(SemesterModel(row[0], row[1]))	    

    exitDB(conn)

    return semesters

def updateAssignmentCompletion(coursecode, num, completion):
    cursor, conn = initDB()

    complete = "%s" % completion
    course = "%s" % coursecode
    number = (num.toInt())[0]

    cursor.execute('''
        UPDATE Assignment
        SET complete = ? 
        WHERE course = ?
        AND number = ?	
    ''', (complete, course, number))

    exitDB(conn)

def updateReadingDone(week, coursecode, bookisbn, done):
    cursor, conn = initDB()

    course = "%s" % coursecode
    book = "%s" % bookisbn

    cursor.execute('''
        UPDATE Reading
        SET done = ?
        WHERE week = ?
        AND course = ?
        AND book = ?	
    ''', (done, week, course, book))    

    exitDB(conn)    

def removeAssignmentFromDB(coursecode, num):
    cursor, conn = initDB()
    
    course = "%s" % coursecode
    number = (num.toInt())[0]

    cursor.execute('''
        DELETE
        FROM Assignment
        WHERE course = ?
        AND number = ?	
    ''', (course, number))

    exitDB(conn)

def removeReadingFromDB(week, coursecode, bookisbn):
    cursor, conn = initDB()

    course = "%s" % coursecode
    book = "%s" % bookisbn

    cursor.execute('''
        DELETE
        FROM Reading
        WHERE week = ?
        AND course = ?
        AND book = ?	
    ''', (week, course, book))

    exitDB(conn)

def removeLessonFromDB(daystring, coursecode, fromTime):
    cursor, conn = initDB()

    day = "%s" % daystring
    course = "%s" % coursecode
    time = "%s" % fromTime

    cursor.execute('''
        DELETE
        FROM Lesson
        WHERE day = ?
        AND course = ?
        AND time = ?	
    ''', (day, course, time))

    exitDB(conn)

def exitDB(conn):
    conn.commit()
    conn.close()

def getCourseCode(courseFull):
    course = courseFull.split(' ')
    return course[0]

def addNewCourse(course):
    courses.append(course)
    addNewCourseToDB(course.getCode(), course.getTitle(), course.getShort(), course.getColor())
    addNewCourseString(course)

def getCourses():
    global courses
    return courses

def addNewCourseString(course):
    global coursesString
    coursesString.append(course.getFull())

def makeCoursesString():
    emptyCourses()
    cs = getCoursesFromDB()
    if cs:
        for c in cs:
            addNewCourseString(c)
    s = getCoursesString()	  
    return s

def getCoursesString():
    global coursesString	
    return coursesString

def addNewBook(book):
    books.append(book)
    addNewBookToDB(book.getISBN(), book.getTitle(), book.getAuthor(), book.getEdition(), book.getCourse())
    addNewBookString(book)

def getBooks():
    global books
    return books

def addNewBookString(book):
    global booksString
    booksString.append(book.getTitle())

def makeBooksString():
    emptyBooks()
    bs = getBooksFromDB()
    if bs:
        for b in bs:
            addNewBookString(b)   
    s = getBooksString()
    return s

def getBooksString():
    global booksString
    return booksString
       
def emptyCourses():
    global courses
    global coursesString
    courses = []
    coursesString = []

def emptyBooks():
    global books
    global booksString
    books = []
    booksString = []

def getRandomColor():
    return QColor(getRandomColorPart(), getRandomColorPart(), getRandomColorPart())

def getRandomColorPart():
    return random.random()*256		    

def getMain():
    global main
    return main    

def main():
    app = QApplication(sys.argv)
    form = MainWindow()
    app.setOrganizationName("PVV")
    app.setOrganizationDomain("pvv.ntnu.no")
    app.setApplicationName(form.title)
    form.show()
    app.exec_()


main()
#initNewDB()