'''The Accordion widget inherits from Tkinter's Frame class and provides stacked
expandable and collapseable containers for displaying other widgets.
Compliant with Python 2.5-2.7
Author: @ifthisthenbreak
'''
from Tkinter import Tk, Frame, PhotoImage, Label
class Chord(Frame):
'''Tkinter Frame with title argument'''
def __init__(self, parent, title='', *args, **kw):
Frame.__init__(self, parent, *args, **kw)
self.title = title
class Accordion(Frame):
def __init__(self, parent, accordion_style=None):
Frame.__init__(self, parent)
# if no style dict, assign default style
if accordion_style:
self.style = accordion_style
else:
self.style = accordion_style = {
'title_bg': 'ghost white',
'title_fg': 'black',
'highlight': 'white smoke'
}
self.columnconfigure(0, weight=1)
def append_chords(self, chords=[]):
'''pass a [list] of Chords to the Accordion object'''
self.update_idletasks()
row = 0
width = max([c.winfo_reqwidth() for c in chords])
for c in chords:
i = PhotoImage() # blank image to force Label to use pixel size
label = Label(self, text=c.title,
image=i,
compound='center',
width=width,
bg=self.style['title_bg'],
fg=self.style['title_fg'],
bd=2, relief='groove')
label.grid(row=row, column=0)
c.grid(row=row+1, column=0, sticky='nsew')
c.grid_remove()
row += 2
label.bind('<Button-1>', lambda e,
c=c: self._click_handler(c))
label.bind('<Enter>', lambda e,
label=label, i=i: label.config(bg=self.style['highlight']))
label.bind('<Leave>', lambda e,
label=label, i=i: label.config(bg=self.style['title_bg']))
def _click_handler(self, chord):
if len(chord.grid_info()) == 0:
chord.grid()
else:
chord.grid_remove()
if __name__ == '__main__':
from Tkinter import Entry, Button, Text
root = Tk()
# create the Accordion
acc = Accordion(root)
# first chord
first_chord = Chord(acc, title='First Chord', bg='white')
Label(first_chord, text='hello world', bg='white').pack()
# second chord
second_chord = Chord(acc, title='Second Chord', bg='white')
Entry(second_chord).pack()
Button(second_chord, text='Button').pack()
# third chord
third_chord = Chord(acc, title='Third Chord', bg='white')
Text(third_chord).pack()
# append list of chords to Accordion instance
acc.append_chords([first_chord, second_chord, third_chord])
acc.pack(fill='both', expand=1)
root.mainloop()
