#McListBox Example
#Jan.20, 2013
import tkinter as tk
import tkinter.font as tkFont
import tkinter.ttk as ttk
#import re
Actors_list = [("Rowan","Atkinson"),("John","Candy"),("Morgan","Freeman"),("James","Garner"),("Cary","Grant"),("Kate","Hudson"),
("Jack","Nicholson"),("William","Powell"),("Arnold","Schwarzenegger"),("Tom","Selleck"),("John","Wayne")]
Movies_list = [[("Bean","1997"),("Mr. Bean's Holiday","2007"),("The Lion King","1994"),("Johnny English","2003"),("Johnny English Reborn","2011"),("Keeping Mum","2005"),("The Black Adder","1982-1983")],
[("Dr. Zonk and the Zunkins","1974"),("Tunnel Vision","1976"),("SCTV","1976-1979"),("1941","1979")],
[("The Pawnbroker","1964"),("Blade","1973"),("The Electric Company","1971-1977"),("Attica","1980"),
("Brubaker","1980"),("Street Smart","1980"),("Driving Miss Daisy","1989"),("Glory","1989"),("Unforgiven","1992"),
("Outbreak","1995"),("Se7en","1995"),("Amistad","1997"),("The Bucket List","2007")],
[("Cash McCall","1960"),("Sugarfoot","1957"),("Cheyenne","1955-1957"),("Maverick","1957-1962"),("The Great Escape","1963")],
[("Singapore Sue","1932"),("She Done Him Wrong","1933"),("I'm No Angel","1933"),("Born to be Bad","1934")],
[("200 Cigarettes","1999"),("Almost Famous","2000"),("How to Lose a Guy in 10 Days","2003")],
[("The Cry Baby Killer","1958"),("Seahunt","1961"),("Easy Rider","1969"),("One Flew Over the Cuckoo's Nest","1975")],
[("Mr. Roberts","1955"),("Ziegfeld Follies","1945"),("Manhattan Melodrama","1934"),("The Thin Man","1934")],
[("Hercules in New York","1969"),("Conan the Barbarian","1982"),("The Terminator","1984")],
[("The Rockford Files","1978-1979"),("The Sacketts","1979"),("Magnum, P.I.","1980-1988"),("Blue Bloods","2010-")],
[("The Shootist","1976"),("McQ","1974"),("The Cowboys","1972"),("Brown of Harvard","1926")]]
actor_header = ['First Name','Last Name']
movie_header = ['Movie','Date']
class McListBox(object):
"""use a ttk.TreeView as a multicolumn ListBox"""
def __init__(self,element_header,element_list):
self.element_header = element_header
self.element_list = element_list
self.tree = None
self._setup_widgets()
self._build_tree()
def _setup_widgets(self):
container = ttk.Frame()
container.pack(fill='both', expand=True)
# create a treeview with scrollbar
self.tree = ttk.Treeview(columns=self.element_header, show="headings")
vsb = ttk.Scrollbar(orient="vertical", command=self.tree.yview)
self.tree.configure(yscrollcommand=vsb.set)
self.tree.grid(column=0, row=0, sticky='nsew', in_=container)
vsb.grid(column=1, row=0, sticky='ns', in_=container)
container.grid_columnconfigure(0, weight=1)
container.grid_rowconfigure(0, weight=1)
self.tree.bind( "<Double-Button-1>", self.OnClick)
def _build_tree(self):
for col in self.element_header:
self.tree.heading(col, text=col.title(),
command=lambda c=col: sortby(self.tree, c, 0))
# adjust the column's width to the header string
self.tree.column(col, width=tkFont.Font().measure(col.title()))
for item in self.element_list:
self.tree.insert('', 'end', values=item)
# adjust column's width if necessary to fit each value
for ix, val in enumerate(item):
col_w = tkFont.Font().measure(val)
if self.tree.column(self.element_header[ix], width=None) < col_w:
self.tree.column(self.element_header[ix], width=col_w)
def OnClick(self, event):
global return_index
item = self.tree.identify('item',event.x,event.y)
return_index = (int((item[1:4]),16) - 1)
reload_tree(return_index,self)
def isnumeric(s):
"""test if a string is numeric"""
for c in s:
if c in "1234567890-.":
numeric = True
else:
return False
return numeric
def change_numeric(data):
"""if the data to be sorted is numeric change to float"""
new_data = []
if isnumeric(data[0][0]):
# change child to a float
for child, col in data:
new_data.append((float(child), col))
return new_data
return data
def sortby(tree, col, descending):
"""sort tree contents when a column header is clicked on"""
# grab values to sort
data = [(tree.set(child, col), child) for child in tree.get_children('')]
# if the data to be sorted is numeric change to float
data = change_numeric(data)
# now sort the data in place
data.sort(reverse=descending)
for ix, item in enumerate(data):
tree.move(item[1], '', ix)
# switch the heading so that it will sort in the opposite direction
tree.heading(col,
command=lambda col=col: sortby(tree, col, int(not descending)))
def reload_tree(tree_index,source_tree):
if source_tree == actor_listbox:
movie_listbox.tree.grid_forget()
movie_listbox.__init__(movie_header,Movies_list[tree_index])
elif source_tree == movie_listbox:
pass
root = tk.Tk()
root.wm_title("ttk.TreeView as multicolumn ListBox")
actor_listbox = McListBox(actor_header,Actors_list)
movie_listbox = McListBox(movie_header,Movies_list[0])
root.mainloop()
def main():
pass
if __name__ == '__main__':
main()
I'm fairly new to python and am having problems getting multiple TreeViews to work well. The second tree should change with the mouse selection in the first. Every time I make a selection in the first, padding is extended between the widgets. Is there a way to empty the second one and reload it?