Stack_GUI.py

from tkinter import *

#root.geometry('500x500')
'''
mainFrame = LabelFrame(root,text='first frame',padx=50)
mainFrame.grid(padx=10,pady=10)
'''
#Classes
class Stack_Gui:
    def __init__(self,top):
        global ent
        global lst
        lst=list()
        psh = Button(top,text='PUSH',width=20,bg='#4db8ff',command=self.validatePush).grid(row=0,column=1,padx=20,pady=10)
        pp = Button(top,text='POP',width=20,bg='#4db8ff',command=self.validatePop).grid(row=0,column=2,padx=20)
        pek = Button(top,text='PEAK',width=20,bg='#4db8ff',command=self.validatePeak).grid(row=0,column=3,padx=20)

        ent = Entry(top,borderwidth=5)
        ent.grid(row=2,column=1,padx=20)
        btn = Button(top,text='Clear',width=10,bg='#e5e5cc',height=2,command=self.clear)
        btn.grid(row=3,column=1)

        lab1 = Label(top,text="",bg='#ffff80',width=10,height=5)
        lab1.grid(row=2,column=2,pady=1)

        lab2 = Label(top,text="",bg='#ffff80',width=10,height=5)
        lab2.grid(row=3,column=2,pady=1)

        lab3 = Label(top,text="",width=10,bg='#ffff80',height=5)
        lab3.grid(row=4,column=2,pady=1)

        lab4 = Label(top,text="",bg='#ffff80',width=10,height=5)
        lab4.grid(row=5,column=2,pady=1)

        lab5 = Label(top,width=10,bg='#ffff80',height=5)
        lab5.grid(row=6,column=2,pady=1)
        #Exit button
        ext = Button(top,text='Exit',width=20,command=quit,bg='#ff471a').grid(row=7,column=3)
        #Top and bottom Lables
        labt = Label(top,text='<----------Top').grid(row=2,column=3)
        labb = Label(top,text='<-------Bottom').grid(row=6,column=3,padx=0)

    #Push() operation
    def Push1(self):
        if len(lst) == 0:
            #lab5.pack_forget()
            lab5 = Label(top,text=ent.get(),bg='#ff944d',width=10,height=5)
            lab5.grid(row=6,column=2,pady=1)
            lst.append(ent.get())
        elif len(lst) == 1:
            lab4 = Label(top,text=ent.get(),bg='#ff944d',width=10,height=5)
            lab4.grid(row=5,column=2,pady=1)
            lst.append(ent.get())
        elif len(lst) == 2:
            lab4 = Label(top,text=ent.get(),bg='#ff944d',width=10,height=5)
            lab4.grid(row=4,column=2,pady=1)
            lst.append(ent.get())
        elif len(lst) == 3:
            lab4 = Label(top,text=ent.get(),bg='#ff944d',width=10,height=5)
            lab4.grid(row=3,column=2,pady=1)
            lst.append(ent.get())
        else:
            lab1 = Label(top,text=ent.get(),bg='#ff944d',width=10,height=5)
            lab1.grid(row=2,column=2,pady=1)
            lst.append(ent.get())
        self.clear()

    #Pop() operation
    def Pop1(self):
        if len(lst) == 1:
            #lab5.pack_forget()
            lab5 = Label(top,text='',bg='#ffff80',width=10,height=5)
            lab5.grid(row=6,column=2,pady=1)
            lst.pop()
        elif len(lst) == 2:
            lab4 = Label(top,text='',bg='#ffff80',width=10,height=5)
            lab4.grid(row=5,column=2,pady=1)
            lst.pop()
        elif len(lst) == 3:
            lab4 = Label(top,text='',bg='#ffff80',width=10,height=5)
            lab4.grid(row=4,column=2,pady=1)
            lst.pop()
        elif len(lst) == 4:
            lab4 = Label(top,text='',bg='#ffff80',width=10,height=5)
            lab4.grid(row=3,column=2,pady=1)
            lst.pop()
        else:
            lab1 = Label(top,text='',bg='#ffff80',width=10,height=5)
            lab1.grid(row=2,column=2,pady=1)
            lst.pop()

    #Peak() operation
    def Peak1(self):
        labn = Label(top,text=lst[-1],bg='#ff944d',width=10,height=5)
        labn.grid(row=4,column=3)
        labn.after(5000 , lambda: labn.destroy())

    #Validator for push
    def validatePush(self):
        if len(lst)<5:
            if (len(ent.get())==0):
                self.InvalidInput()
            else:
                self.Push1()
        else:
            self.Full()

    #Validator for pop
    def validatePop(self):
        if len(lst)==0:
            self.Empty()
        else:
            self.Pop1()

    #Validator for peak
    def validatePeak(self):
        if len(lst)==0:
            self.Empty()
        else:
            self.Peak1()

    #Invalid Input
    def InvalidInput(self):
        full = Toplevel(bg='#8cff66')
        full.title('InvalalidInput')
        lab = Label(full,text="Enter any value.",fg='blue',bg='#8cff66',width=20,height=5)
        lab.grid(row=1,column=1)
        full.resizable(0,0)
        full.after(5000 , lambda: full.destroy())
        btn = Button(full,text='Exit',width=10,height=2,command=full.destroy)
        btn.grid(row=2,column=2)

    #Stack Full
    def Full(self):
        full = Toplevel(bg='#8cff66')
        full.title('Warning')
        lab = Label(full,text="Stack is Full",fg='blue',bg='#8cff66',width=20,height=5)
        lab.grid(row=1,column=1)
        full.resizable(0,0)
        full.after(5000 , lambda: full.destroy())
        btn = Button(full,text='Exit',width=10,height=2,command=full.destroy)
        btn.grid(row=2,column=2)

    #Stack Empty
    def Empty(self):
        ept = Toplevel(bg='#8cff66')
        ept.title("Warning")
        lab = Label(ept,text="Stack is Empyt",fg='blue',bg='#8cff66',width=20,height=5)
        lab.grid(row=1,column=1)
        ept.resizable(0,0)
        ept.after(5000 , lambda: ept.destroy())
        btn = Button(ept,text='Exit',width=10,height=2,command=ept.destroy)
        btn.grid(row=2,column=2)

    #clear Entry Field
    def clear(self):
        ent.delete(0,END)

#if __name__ == 'main':
root = Tk()

#img = PhotoImage(file="hacker.jpg")
top = Frame(root,bg='#123456')
top.grid()
#top.create_image(20,20, anchor=NW, image=img)
obj = Stack_Gui(top)
root.resizable(0,0)

root.mainloop()