I've created a ghetto-ized ComboBox that should work nicely for Tkinter
(unfortunately no dropdown capabilities yet).
I've found why it's such a pain in the @ss to create one. You have to
re-create common methods and make sure they're mapped to the right
component (inside this widget are frame, entry, listbox, and scrollbar
widgets). I tried to look for ways I could inherit some methods from
other widgets but couldn't think of how to do it in an efficient way.
If anyone has suggestions to improve it, please respond... Remember...
I'm a traditional c/c++ turned python programmer who forgets that there
usually is a better, faster more graceful way to do things with Python
than with C/C++/Java.
Cheers,
Harlin
######################################################################
# Seritt Extensions:
# Date: 02262005
# Class ComboBox
# Add this section to your Tkinter.py file in 'PYTHONPATH/Lib/lib-tk/'
# Options: width, border, background, foreground, fg, bg, font
# , relief, cursor, exportselection, selectbackgroun,
selectforeground, height
#
# Methods: activate(int index) => int, curselection() => int,
delete(item=["ALL" or int], start=int, end=["END" or
# int],
# focus_set()/focus(), get()=>selected string in box, pack(padx=int,
pady=int, fill(X, Y, BOTH), expand=bool, # side=LEFT,
# RIGHT, TOP, BOTTOM, CENTER
#
class ComboBox:
ITEMS = range(0)
def activate(self, index):
self.listbox.activate(index)
def curselection(self):
return map(int, self.listbox.curselection())[0]
def delete(self, item=None, start=None, end=None):
if item=='ALL':
self.listbox.delete(0, END)
elif start == None and end == None:
self.listbox.delete(item)
else:
self.listbox.delete(start, end)
def get_focus(self):
self.entry.get_focus()
def focus(self):
self.entry.get_focus()
def get(self):
return self.entry.get()
def pack(self, padx=None, pady=None, fill=None, expand=None,
side=None):
self.frame.pack(padx=padx
, pady=pady
, fill=fill
, expand=expand
, side=side)
def size(self):
return self.listbox.size()
def insert(self, START, ITEM):
self.ITEMS.append(ITEM)
self.listbox.insert(START, ITEM)
self.listbox.select_set(0)
self.entry.delete(0, END)
self.entry.insert(0,
self.listbox.get(self.listbox.curselection()))
def change_entry(self, event):
def i(event):
try:
self.entry.delete(0, END)
self.entry.insert(0,
self.listbox.get(self.listbox.curselection()))
except:
pass
self.listbox.bind("<ButtonRelease-1>", i)
def __init__(self, parent, width=None, border=1, background=None,
foreground=None, fg=None, bg=None, font=None
, relief=None, cursor=None, exportselection=None,
selectbackgroun=None, selectforeground=None, height=None):
self.frame = Frame(parent)
self.entry = Entry(self.frame
, width=None
, border=border
, background=background
, foreground=foreground
, fg=fg
, bg=bg
, font=font
, relief=relief
, cursor=cursor
, exportselection=exportselection
, selectbackgroun=selectbackgroun
, selectforeground=selectforeground
, height=height)
self.entry.pack(fill=X)
self.scroll = Scrollbar(self.frame)
self.scroll.pack(side=RIGHT, fill=Y)
self.listbox = Listbox(self.frame
, yscrollcommand=self.scroll.set
, width=None
, border=border
, background=background
, foreground=foreground
, fg=fg
, bg=bg
, font=font
, relief=relief
, cursor=cursor
, exportselection=exportselection
, selectbackgroun=selectbackgroun
, selectforeground=selectforeground
, height=height)
self.listbox.pack(fill=X)
self.scroll.config(command=self.listbox.yview)
self.listbox.bind("<ButtonPress-1>", self.change_entry)
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