Test Tkinter interrelated Callback 2

I've been busy lately and forgot how to write Markdown, so I posted it with a meaning to remember. When using the following interrelationship Callback, if you create a relationship with multiple objects Since the source is miscellaneous, the source has been modified so that it can be grouped together. https://qiita.com/Nomisugi/items/8d11e0419091ac21866d (code before modification)

MultiBinEditor.py

import tkinter as tk

class HexSpinbox(tk.Spinbox):
    def __init__(self, *args, **kwargs):
        self.var = tk.StringVar()
        self.bytenum = kwargs.pop('bytenum', 1)
        self.add_callback = None
        self.handle_obj = None
        max_val = 0x1<<(self.bytenum*8)
        super().__init__(*args, **kwargs, textvariable=self.var, from_=0,to=max_val,
                         increment=1, command=self.callback )

    def set(self, val):
        s = "0x{:0%dx}" % (self.bytenum*2)
        self.var.set(s.format(int(val)))
        
    def get(self):
        hstr = super().get()
        return int(hstr, 16)

    def callback(self):
        val = super().get()
        self.set(val)
        self.add_callback(val) if self.add_callback != None else None

    def setCallback_pair(self, obj):
        self.pair_obj = obj
        self.add_callback = self.handle

    def handle(self, val):
        self.set(val)
        self.pair_obj.set(val)
        
    def setCallback(self, func):
        self.add_callback = func

class BinEditFrame(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        self.val = 0x00
        self.bits = []
        self.add_callback = None
        self.pair_obj = None
        for i in range(8):
            btn = tk.Button(self,text=str(i), relief='raised', command=self.callback(i))
            btn.pack(sid='right')
            self.bits.append(btn)

    def callback(self, i):
        def push():
            self.val ^= (1<<i)
            self.redraw()
            self.add_callback(self.val) if self.add_callback != None else None
        return push
    
    def redraw(self):
        #All Button Delete
        for bit in self.bits:
            bit.destroy()
        self.bits.clear()
            
        #All Button ReCreate
        for i in range(8):
            if (self.val & (1<<i) > 0):
                btn = tk.Button(self,text=str(i), relief='sunken',
                                command=self.callback(i) )
            else:
                btn = tk.Button(self,text=str(i), relief='raised',
                                command=self.callback(i) )
            btn.pack(sid='right')
            self.bits.append(btn)
        
        
    def setCallback(self, func):
        self.add_callback = func
        
    def setCallback_pair(self, obj):
        self.pair_obj = obj
        self.add_callback = self.handle

    def handle(self, val):
        self.set(val)
        self.pair_obj.set(val)

    def set(self, val):
        self.val = int(val)
        self.redraw()

if __name__ == "__main__":
    print("BinHexEditor")
    win = tk.Tk()
    hx = HexSpinbox(win)
    hx.pack(side=tk.LEFT)
    be = BinEditFrame(win)
    be.pack(side=tk.LEFT)

    hx.setCallback_pair(be)
    be.setCallback_pair(hx)
        
    win.mainloop()

We have created a mechanism that allows you to change each other's numerical values without adding an external Callback function. Let's make a special binary editor using this.