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email_app.py
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email_app.py
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from tkinter import *
from tkinter import ttk
from tkinter import messagebox
import shelve
import email_downloader
import threading
# Main email app(root)
class EmailApp(Tk):
#################################################################################################################################
def __init__(self):
super().__init__()
self.geometry("380x200")
self.title("Email Downloader")
# List box with the current downloads
self.email_list = Listbox(self, height=7, width=50, border=0)
self.email_list.grid(row=0, column=0, columnspan=3, rowspan=3, pady=20, padx=20, sticky=(N, E, S, W))
self.email_list.bind('<<ListboxSelect>>', self.select_item)
# buttons
self.new_download_btn = ttk.Button(self, text='New', command=self.open_new_download)
self.new_download_btn.grid(row=3, column=0)
self.continue_btn = ttk.Button(self, text='Continue', command=self.continue_download)
self.continue_btn.grid(row=3, column=1)
self.pause_btn = ttk.Button(self, text='Exit', command=self.close_window)
self.pause_btn.grid(row=3, column=2)
# Populate the email list with unfinished emails
self.populate_email_list()
#################################################################################################################################
def open_new_download(self):
"""Creates a new download instance"""
new = NewDownload(self)
new.grab_set()
#################################################################################################################################
def select_item(self, event):
"""Select an item in the list box"""
index = self.email_list.curselection()[0]
selected_item = self.email_list.get(index)
self.continue_email = selected_item[0]
#################################################################################################################################
def continue_download(self):
"""Continue an email download"""
try:
shelfFile = shelve.open('save')
email = shelfFile[self.continue_email]['email']
password = shelfFile[self.continue_email]['password']
uids = shelfFile[self.continue_email]['uids']
last_download_index = shelfFile[self.continue_email]['last_downloaded']
number_of_email = shelfFile[self.continue_email]['number_of_emails']
shelfFile.close()
# Connect to the server and resume the download
conn = ConnectToServer(self)
conn_obj = threading.Thread(target=conn.continue_download, kwargs={'email': email, 'password': password, 'number_of_email': number_of_email, 'uids':uids, 'last_download_index': last_download_index})
conn_obj.start()
except AttributeError:
messagebox.showerror('No selection', "Please select a row in the list box!")
except KeyError:
messagebox.showerror('No selection', "Please select a row in the list box!")
#################################################################################################################################
def populate_email_list(self):
"""Populates the list of emails that have not yet finished downloading"""
try:
self.email_list.delete(0, END)
shelfFile = shelve.open('save')
for k, v in shelfFile.items():
percentage_progress = (shelfFile[k]['last_downloaded'] / shelfFile[k]['number_of_emails']) * 100
row = [shelfFile[k]['email'], str(shelfFile[k]['last_downloaded']) + ' out of '+ str(shelfFile[k]['number_of_emails']), str(percentage_progress)+'%']
self.email_list.insert(END, row)
shelfFile.close()
except KeyError:
shelfFile.close()
#################################################################################################################################
def close_window(self):
"""Closes main window, exits the main application"""
self.destroy()
# Responsible for new download instances
class NewDownload(Toplevel):
#################################################################################################################################
def __init__(self, parent):
super().__init__(parent)
self.parent = parent
self.geometry("330x200")
self.title("Download")
# Email download frame
download_frame = ttk.Labelframe(self, text="Download")
download_frame.pack(fill='both', expand='yes', padx=20, pady=10)
# email entry
self.email = StringVar()
self.email_lbl = ttk.Label(download_frame, text='Email')
self.email_entry = ttk.Entry(download_frame, textvariable=self.email)
self.email_lbl.grid(row=0, column=0, padx=5, pady=3,)
self.email_entry.grid(row=0, column=1, padx=5, pady=3,)
# Password Entry
self.password = StringVar()
self.password_lbl = ttk.Label(download_frame, text="Password")
self.password_entry = ttk.Entry(download_frame, textvariable=self.password, show="*")
self.password_lbl.grid(row=1, column=0, padx=5, pady=3,)
self.password_entry.grid(row=1, column=1, padx=5, pady=3,)
# number entry
self.number = StringVar()
self.number.set('All')
self.number_lbl = ttk.Label(download_frame, text="Number of emails")
self.number_entry = ttk.Entry(download_frame, textvariable=self.number)
self.number_lbl.grid(row=2, column=0, padx=5, pady=3,)
self.number_entry.grid(row=2, column=1, padx=5, pady=3,)
# Download button
download_btn = ttk.Button(download_frame, text='Download', command=self.connect_to_server)
download_btn.grid(row=3, column=0, padx=5, pady=3, sticky=(E,W))
# Cancel button
cancel_button = ttk.Button(download_frame, text="Cancel", command=self.destroy)
cancel_button.grid(row=3, column=1, padx=5, pady=3, sticky=(E,W))
#################################################################################################################################
def connect_to_server(self):
"""Connect to the imap server as well as log in to gmail"""
if self.email.get() != '' and self.password.get() != '' and self.number.get() != '':
# get the parameters
email = self.email.get()
password = self.password.get()
number_of_email = self.number.get()
# Creating a connection loading icon
conn = ConnectToServer(self.parent)
conn_obj = threading.Thread(target=conn.connect_to_the_server, kwargs={'email': email, 'password': password, 'number_of_email': number_of_email})
conn_obj.start()
self.destroy() # Close the download window and open the connecting progress loader as a thread
else:
messagebox.showerror("Empty Fields", "Please completely fill in the form.", parent=self)
#################################################################################################################################
class ConnectToServer(Toplevel):
#################################################################################################################################
def __init__(self, parent):
super().__init__(parent)
self.geometry("220x70")
self.title("Connecting")
self.parent = parent
# Connection status label
self.status = StringVar()
status_lbl = ttk.Label(self, text='Connecting...', textvariable=self.status)
status_lbl.grid(row=0, column=0, padx=5, pady=5, sticky=W)
# Progress bar for the connection status
self.status_bar = ttk.Progressbar(self, orient=HORIZONTAL, length=200, value=0)
self.status_bar.grid(row=1, column=0, padx=5, pady=5)
#################################################################################################################################
def connect_to_the_server(self, email, password, number_of_email):
"""Connect to the server and login"""
conn = email_downloader.ContinueDownload(email, password, number_of_email).login_to_imap_server(self.parent, self, self.status, self.status_bar)
#################################################################################################################################
def continue_download(self, email, password, number_of_email, uids, last_download_index):
"""Continue a download, connect to the server, login and download"""
conn = email_downloader.ContinueDownload(email, password, number_of_email, uids, last_download_index).login_to_imap_server(self.parent, self, self.status, self.status_bar)
#################################################################################################################################
if __name__ == '__main__':
app = EmailApp()
app.mainloop()