DisplayWindow.py

import sys
import RegressionModel
from pyqtgraph import PlotWidget, plot
import pyqtgraph as pg
from PyQt6.QtWidgets import (QApplication, QMainWindow, QWidget,
                             QVBoxLayout, QHBoxLayout, QGridLayout,
                             QLabel, QPushButton, QSlider, QDateTimeEdit,
                             QLineEdit, QComboBox, QDateEdit)
from PyQt6.QtGui import QPalette, QColor, QIcon


class MainWindow(QMainWindow):

    def __init__(self):
        super().__init__()
        self.setWindowIcon(QIcon("icon.ico"))
        self.setMinimumSize(720, 640)

        # Create a central widget
        central_widget = QWidget(self)
        self.setCentralWidget(central_widget)

        # Create a grid layout and set it to the central widget
        grid_layout = QGridLayout(central_widget)

        # Create labels and input fields
        self.labels_text = ['Date', 'Airline', 'Destination', 'Model Start Year']
        self.input_fields = [QDateEdit(self), QComboBox(self), QComboBox(self), QComboBox(self)]
        self.input_fields[1].addItems(RegressionModel.airlines)
        self.input_fields[2].addItems(RegressionModel.destinations)
        self.input_fields[3].addItems(list(map(str, RegressionModel.model_years)))

        # Add labels and input fields to the grid layout
        for i in range(4):
            label = QLabel(self.labels_text[i], self)
            grid_layout.addWidget(label, 0, i)
            grid_layout.addWidget(self.input_fields[i], 1, i)

        # Connect signals
        for i in range(len(self.input_fields)):
            if i == 0:
                self.input_fields[i].dateChanged.connect(self.update_values)
            else:
                self.input_fields[i].currentTextChanged.connect(self.update_values)

        # Create a plot widget
        graphWidget = pg.PlotWidget(self)
        graphWidget.setBackground('w')
        graphWidget.plot(RegressionModel.selected_day, RegressionModel.delay)

        # Add the plot widget to the grid layout
        grid_layout.addWidget(graphWidget, 2, 0, 1, 4)
        grid_layout.addWidget(QLabel("EXPECTED DELAY: ", self), 3, 0, 1, 1)
        # Remember to add the delay value here

        self.setWindowTitle('Assistance Systems')
        self.show()

    def update_values(self):
        menu_items = {0: "date", 1: "airline", 2: "destination", 3: "years to model"}
        sender = self.sender()
        for i in range(4):
            if sender == self.input_fields[i]:
                RegressionModel.GUI_selections[menu_items[i]] = sender.currentText() if i != 0 \
                    else sender.dateTime()
                print(RegressionModel.GUI_selections[menu_items[i]])


app = QApplication(sys.argv)

window = MainWindow()
window.show()

app.exec()