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mainwindow.py
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mainwindow.py
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import sys
from PyQt5 import QtWidgets, uic, QtCore
from PyQt5.QtCore import QObject
from PyQt5.QtWidgets import QWidget, QTabWidget, QTableWidget, QTableWidgetItem, QHeaderView
from PyQt5.uic.properties import QtGui
import adduser
import customerdialog
import datalayer
import headerdialog
import linedialog
import login
import stockdialog
import stockupdate
from customerupdate import CustomerUpdate
win1 = uic.loadUiType("Interface.ui")[0]
db = 'Book Selling Database.db'
sys._excepthook = sys.excepthook
def my_exception_hook(exectype, value, traceback):
print(exectype, value, traceback)
sys.exit(1)
sys.excepthook = my_exception_hook
class NumericTableWidgetItem(QTableWidgetItem):
def __init__(self, number):
# For numbers store float so can be compared numerically for sorting algorithms
QTableWidgetItem.__init__(self, number, QTableWidgetItem.UserType)
# Convert None to the value 0 to group all None as smallest value
if number == "None":
number = "0"
self.__number = float(number)
def __lt__(self, other):
return self.__number < other.__number
class MainWindow(QtWidgets.QMainWindow, win1):
# Set all initial selected values to None
selectedHeader = [None] * 3
selectedOrderNumber = None
selectedCustomerName = None
currentTab = 0
loadedTab = [False] * 3
def __init__(self, parent=None):
QtWidgets.QMainWindow.__init__(self, parent)
# load all the data into the tables
login_dialog = login.FirstWindow()
login_dialog.exec_()
if not login_dialog.signedIn:
sys.exit(0)
self.setupUi(self)
self.refresh_tab(0)
if not login_dialog.administrator:
self.addUserButton.hide()
# hide help text
self.helpWidget.hide()
# Get the header view from the stock table and connect it for when the section is clicked
stock_table: QTableWidget = self.find_stock_table()
stock_header: QHeaderView = stock_table.horizontalHeader()
stock_header.sectionClicked.connect(self.header_section_clicked)
# Get the header view from the customer table and connect it for when the section is clicked
customer_table: QTableWidget = self.find_customer_table()
customer_header: QHeaderView = customer_table.horizontalHeader()
customer_header.sectionClicked.connect(self.header_section_clicked)
# Get the header view from the headers table and connect it for when the section is clicked
headers_table: QTableWidget = self.find_headers_table()
headers_horizontal_header: QHeaderView = headers_table.horizontalHeader()
headers_horizontal_header.sectionClicked.connect(self.header_section_clicked)
headers_vertical_header: QHeaderView = headers_table.verticalHeader()
headers_vertical_header.sectionClicked.connect(self.header_row_clicked)
def refresh_tab(self, tabNumber: int):
# check tab has not been loaded
if not self.loadedTab[tabNumber]:
# load data for the relevant table
if tabNumber == 0:
self.refresh_stock()
elif tabNumber == 1:
self.refresh_customers()
elif tabNumber == 2:
self.refresh_header()
# set that tab to loaded
self.loadedTab[tabNumber] = True
# update current tab number
self.currentTab = tabNumber
else:
self.currentTab = tabNumber
def refresh_column(self, results, column, table, size, numeric=False, price=False):
# Set the table to column to the size passed into the function
table.setColumnWidth(column, size)
# Set the row to the length of results
row_count: int = len(results)
table.setRowCount(row_count)
# Set the starting index to 0
row_index: int = 0
if not price:
for row in results:
# Set the item in the table to being the name
name: str = [str(x) for x in row][0]
if numeric:
# use our own class so that sorting of numeric values works correctly
table.setItem(row_index, column, NumericTableWidgetItem(name))
else:
table.setItem(row_index, column, QTableWidgetItem(name))
# Increment the row pointer
row_index = row_index + 1
else:
for row in results:
# Set the item in the table to being the name
number = [self.get_price(x) for x in row][0]
table.setItem(row_index, column, NumericTableWidgetItem(number))
row_index = row_index + 1
def get_price(self, number):
if number is None:
pass
else:
price = str("{0:.2f}".format(number))
return price
def header_section_clicked(self, logicalIndex: int):
# Find the relevant table and selected header
if self.currentTab == 0:
table: QTableWidget = self.find_stock_table()
selected_header = self.selectedHeader[0]
elif self.currentTab == 1:
table: QTableWidget = self.find_customer_table()
selected_header = self.selectedHeader[1]
else:
table: QTableWidget = self.find_headers_table()
selected_header = self.selectedHeader[2]
header: QHeaderView = table.horizontalHeader()
# Check if the table is currently sorted in ascending order and if so sort in descending order
if selected_header != logicalIndex:
table.sortItems(logicalIndex, QtCore.Qt.AscendingOrder)
# Change indicator on the header
header.setSortIndicator(logicalIndex, QtCore.Qt.AscendingOrder)
# set selectedHeader to the new selected header index
selected_header = logicalIndex
else:
table.sortItems(logicalIndex, QtCore.Qt.DescendingOrder)
# Change indicator on the header
header.setSortIndicator(logicalIndex, QtCore.Qt.DescendingOrder)
# reset selectedHeader as the column is currently sorted in descending order
selected_header = None
# show indicator so clear it is clear to the user how it is sorted
header.setSortIndicatorShown(True)
# return the update selected header
self.selectedHeader[self.currentTab] = selected_header
def find_stock_table(self) -> QObject:
# Find the stock table widget
tab = self.findChild(QTabWidget, "tabWidget")
stock_tab = tab.findChild(QWidget, "stockTab")
table = stock_tab.findChild(QTableWidget, "stockTable")
return table
def refresh_stock(self):
# Find the stock table widget
table: QTableWidget = self.find_stock_table()
header: QHeaderView = table.horizontalHeader()
# Read the data from the database and enter it into the relevant column
title = datalayer.stock_title(db)
self.refresh_column(title, 0, table, 150)
author = datalayer.stock_author(db)
self.refresh_column(author, 1, table, 150)
# Set numeric to True for price and quantity
price = datalayer.stock_list_price(db)
self.refresh_column(price, 2, table, 50, True, True)
quantity = datalayer.stock_quantity(db)
self.refresh_column(quantity, 3, table, 50, True)
table.setEditTriggers(QtWidgets.QTableWidget.NoEditTriggers)
header.setSortIndicatorShown(False)
self.selectedHeader[self.currentTab] = None
def add_stock(self):
# Open add stock dialog and then refresh stock
stock_dialog = stockdialog.StockDialog()
stock_dialog.exec_()
self.refresh_stock()
def update_stock(self):
stock_update = stockupdate.StockUpdate()
stock_update.exec_()
self.refresh_stock()
def find_customer_table(self) -> QObject:
# Find the customer table widget
tab = self.findChild(QTabWidget, "tabWidget")
customer_tab = tab.findChild(QWidget, "customerTab")
table = customer_tab.findChild(QTableWidget, "customerTable")
return table
def refresh_customers(self):
# Find the customer table widget
table: QTableWidget = self.find_customer_table()
header: QHeaderView = table.horizontalHeader()
# Read the data from the database and enter it into the relevant column
names = datalayer.customer_name(db)
self.refresh_column(names, 0, table, 100)
email = datalayer.customer_email(db)
self.refresh_column(email, 1, table, 100)
tel = datalayer.customer_tel(db)
self.refresh_column(tel, 2, table, 100)
address = datalayer.customer_address(db)
self.refresh_column(address, 3, table, 100)
# Set numeric to true for discount
discount = datalayer.customer_discount(db)
self.refresh_column(discount, 4, table, 50, True)
totalSpent = datalayer.customer_total_spent(db)
self.refresh_column(totalSpent, 5, table, 50, True, True)
table.setEditTriggers(QtWidgets.QTableWidget.NoEditTriggers)
header.setSortIndicatorShown(False)
self.selectedHeader[self.currentTab] = None
def add_customer(self):
# Open add customer dialog and then refresh customer
customer_dialog = customerdialog.CustomerDialog()
customer_dialog.exec_()
self.refresh_customers()
def update_customer(self):
customer_update = CustomerUpdate()
customer_update.exec_()
self.refresh_customers()
def find_headers_table(self) -> QObject:
# Find the order headers table widget
tab = self.findChild(QTabWidget, "tabWidget")
orders_tab = tab.findChild(QWidget, "ordersTab")
table = orders_tab.findChild(QTableWidget, "headersTable")
return table
def refresh_header(self, lines=False):
# Find the stock table widget
headerTable: QTableWidget = self.find_headers_table()
orderTable: QTableWidget = self.find_lines_table()
header: QHeaderView = headerTable.horizontalHeader()
# Read the data from the database and enter it into the relevant column
customerName = datalayer.order_customer_name(db)
self.refresh_column(customerName, 0, headerTable, 100)
deliveryAddress = datalayer.order_delivery_address(db)
self.refresh_column(deliveryAddress, 1, headerTable, 100)
# Set numeric True for delivery charge
deliveryCharge = datalayer.order_delivery_charge(db)
self.refresh_column(deliveryCharge, 2, headerTable, 75, True, True)
date = datalayer.order_date(db)
self.refresh_column(date, 3, headerTable, 75)
totalCost = datalayer.order_cost(db)
self.refresh_column(totalCost, 4, headerTable, 45, True, True)
# Set orderNumber column size to zero so it cant be seen
orderNumber = datalayer.order_number(db)
self.refresh_column(orderNumber, 5, headerTable, 0)
headerTable.setEditTriggers(QtWidgets.QTableWidget.NoEditTriggers)
header.setSortIndicatorShown(False)
self.selectedHeader[self.currentTab] = None
# only clear lines if refresh button is clicked
if not lines:
while orderTable.rowCount() > 0:
orderTable.removeRow(0)
self.clickHeaderLabel.show()
def add_header(self):
# Open add header dialog and then refresh header
header_dialog = headerdialog.HeaderDialog()
header_dialog.exec_()
customerID = header_dialog.customerID
self.refresh_header()
datalayer.update_total_spent(db, customerID)
def header_row_clicked(self, logicalindex: int):
headersTable: QTableWidget = self.find_headers_table()
# find Order Number that has been selected
self.selectedOrderNumber = headersTable.item(logicalindex, 5).text()
self.selectedCustomerName = headersTable.item(logicalindex, 0).text()
self.clickHeaderLabel.hide()
# refresh the OrderLines for relevant order number
self.refresh_order_lines()
def refresh_order_lines(self):
linesTable: QTableWidget = self.find_lines_table()
# repeat the function for each column
bookName = datalayer.order_book_name(db, self.selectedOrderNumber)
self.refresh_column(bookName, 0, linesTable, 200)
# Set numeric as true so it can be sorted correctly
quantity = datalayer.order_quantity(db, self.selectedOrderNumber)
self.refresh_column(quantity, 1, linesTable, 100, True)
lineCost = datalayer.order_line_cost(db, self.selectedOrderNumber)
self.refresh_column(lineCost, 2, linesTable, 103, True, True)
linesTable.setEditTriggers(QtWidgets.QTableWidget.NoEditTriggers)
def find_lines_table(self) -> QObject:
# Find the order headers table widget
tab = self.findChild(QTabWidget, "tabWidget")
orders_tab = tab.findChild(QWidget, "ordersTab")
table = orders_tab.findChild(QTableWidget, "linesTable")
return table
def add_lines(self):
if self.selectedOrderNumber is not None:
line_dialog = linedialog.LineDialog(self.selectedOrderNumber, self.selectedCustomerName)
line_dialog.exec_()
self.refresh_order_lines()
customerID = datalayer.find_customer_id(db, self.selectedCustomerName)
# call refresh header but dont clear lines table
self.refresh_header(True)
datalayer.update_total_spent(db, customerID)
def add_user(self):
user_dialog = adduser.UserDialog()
user_dialog.exec_()
def help(self):
self.helpWidget.show()
def close_help(self):
self.helpWidget.hide()
def main():
# Handle high resolution displays:
if hasattr(QtCore.Qt, 'AA_EnableHighDpiScaling'):
QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
if hasattr(QtCore.Qt, 'AA_UseHighDpiPixmaps'):
QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)
app = QtWidgets.QApplication(sys.argv)
window1 = MainWindow(None)
window1.show()
app.exec_()
if __name__ == '__main__':
main()