lern-tracking-system/raspberry-pi/gui/logScreen.py

import tkinter as tk
from tkinter.ttk import Progressbar

import logHandler

class LogScreen(tk.Frame):
  def __init__(self, root):
    self.root = root
    tk.Frame.__init__(self, root)

    self.log_handler = logHandler.get_log_handler()

    self.text = tk.Frame(self,relief="sunken",borderwidth=1)
    self.text.pack(expand=True,fill=tk.BOTH)

    self.y_scroll = tk.Scrollbar(self.text)
    self.y_scroll.pack(side="right", fill="y")

    self.x_scroll = tk.Scrollbar(self.text, orient='horizontal')
    self.x_scroll.pack(side="bottom", fill="x")

    self.textfield = tk.Listbox(self.text, yscrollcommand=self.y_scroll.set, xscrollcommand=self.x_scroll.set)
    self.textfield.pack(side="left",expand=True, fill=tk.BOTH)

    self.y_scroll.config(command=self.textfield.yview)
    self.x_scroll.config(command=self.textfield.xview)

    self.quit_button = tk.Button(self, text="Close", command=self.close, height=2, width = 10)
    self.quit_button.pack(side="right", fill="both")

    for element in self.log_handler.get_log_list():
      self.textfield.insert(tk.END, element)
    self.log_handler.get_new_items()

    root.bind('<Escape>', self.close)

  def update(self):
    if not self.root.winfo_exists():
      return
    lines = self.log_handler.get_new_items()
    if lines:
      for element in lines:
        self.textfield.insert(tk.END, element)
      self.textfield.see("end")

  def close(self):
    if self.root.winfo_exists():
      self.root.destroy()