from tkinter import *
from tkinter.ttk import *

class Window(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.master = master

root = Tk()
app = Window(root)


def add_base():
    out = []
    for x in baseDropdown['values']:
        out.append(int(x))
    try:
        if out.index(int(baseInput.get())) == 0:
            out.append(int(baseInput.get()))
        baseDropdown['values'] = sorted(out)
    except ValueError:
        print("Not a valid base!")
        lbl6 = Label(root, text="\nInvalid base!", font=("Arial", 12))
        lbl6.grid(column=1, row=0)

# set window title
root.wm_title("Numerical converter")

lbl6 = Label(root, text="\n", font=("Arial", 12))
lbl6.grid(column=1, row=0)

lbl2 = Label(root, text="Add a base:", font=("Arial", 12))
lbl2.grid(column=0, row=1)

addBaseBtn = Button(root, text="Add", command=add_base)
addBaseBtn.grid(column=2, row=1)


baseInput = Entry(root,width=10, state='enabled')
baseInput.grid(column = 1, row = 1)

lbl5 = Label(root, text="", font=("Arial", 12))
lbl5.grid(column=0, row=3)

separator1 = Separator(root, orient='horizontal')
separator1.place(relx=0, rely=0.2, relwidth=1, relheight=1)

separator2 = Separator(root, orient='horizontal')
separator2.place(relx=0, rely=0.43, relwidth=1, relheight=1)


baseDropdown = Combobox(root)
baseDropdown['values']= (2, 10, 16)
baseDropdown.current(1) #set the selected item
baseDropdown.grid(column=1, row=4)
lbl3 = Label(root, text="\nNumber Base \n of the input:\n", font=("Arial", 12))
lbl3.grid(column=0, row=4)



numberInput = Entry(root,width=10, state='enabled')
numberInput.grid(column=1, row = 6)

lbl4 = Label(root, text="Number to convert:", font=("Arial", 12))
lbl4.grid(column=0, row=6)

lbl7 = Label(root, text="", font=("Arial", 12))
lbl7.grid(column=50, row=5)



root.resizable(False, False)
root.geometry('600x400')
root.mainloop()