tkinter
Wiki包含一个自动完成文本框的代码，但是由于您需要一个组合框，因此可以使用此代码（您正在寻找
AutocompleteCombobox）。
"""tkentrycomplete.pyA Tkinter widget that features autocompletion.Created by Mitja Martini on 2008-11-29.Updated by Russell Adams, 2011/01/24 to support Python 3 and Combobox.Updated by Dominic Kexel to use Tkinter and ttk instead of tkinter and tkinter.ttk Licensed same as original (not specified?), or public domain, whichever is less restrictive."""import sysimport osimport Tkinterimport ttk__version__ = "1.1"# I may have broken the unipre...Tkinter_umlauts=['odiaeresis', 'adiaeresis', 'udiaeresis', 'Odiaeresis', 'Adiaeresis', 'Udiaeresis', 'ssharp']class AutocompleteEntry(Tkinter.Entry): """ Subclass of Tkinter.Entry that features autocompletion. To enable autocompletion use set_completion_list(list) to define a list of possible strings to hit. To cycle through hits use down and up arrow keys. """ def set_completion_list(self, completion_list): self._completion_list = sorted(completion_list, key=str.lower) # Work with a sorted list self._hits = [] self._hit_index = 0 self.position = 0 self.bind('<KeyRelease>', self.handle_keyrelease) def autocomplete(self, delta=0): """autocomplete the Entry, delta may be 0/1/-1 to cycle through possible hits""" if delta: # need to delete selection otherwise we would fix the current position self.delete(self.position, Tkinter.END) else: # set position to end so selection starts where textentry ended self.position = len(self.get()) # collect hits _hits = [] for element in self._completion_list: if element.lower().startswith(self.get().lower()): # Match case-insensitively _hits.append(element) # if we have a new hit list, keep this in mind if _hits != self._hits: self._hit_index = 0 self._hits=_hits # only allow cycling if we are in a known hit list if _hits == self._hits and self._hits: self._hit_index = (self._hit_index + delta) % len(self._hits) # now finally perform the auto completion if self._hits: self.delete(0,Tkinter.END) self.insert(0,self._hits[self._hit_index]) self.select_range(self.position,Tkinter.END) def handle_keyrelease(self, event): """event handler for the keyrelease event on this widget""" if event.keysym == "BackSpace": self.delete(self.index(Tkinter.INSERT), Tkinter.END) self.position = self.index(Tkinter.END) if event.keysym == "Left": if self.position < self.index(Tkinter.END): # delete the selection self.delete(self.position, Tkinter.END) else: self.position = self.position-1 # delete one character self.delete(self.position, Tkinter.END) if event.keysym == "Right": self.position = self.index(Tkinter.END) # go to end (no selection) if event.keysym == "Down": self.autocomplete(1) # cycle to next hit if event.keysym == "Up": self.autocomplete(-1) # cycle to previous hit if len(event.keysym) == 1 or event.keysym in Tkinter_umlauts: self.autocomplete()class AutocompleteCombobox(ttk.Combobox): def set_completion_list(self, completion_list): """Use our completion list as our drop down selection menu, arrows move through menu.""" self._completion_list = sorted(completion_list, key=str.lower) # Work with a sorted list self._hits = [] self._hit_index = 0 self.position = 0 self.bind('<KeyRelease>', self.handle_keyrelease) self['values'] = self._completion_list # Setup our popup menu def autocomplete(self, delta=0): """autocomplete the Combobox, delta may be 0/1/-1 to cycle through possible hits""" if delta: # need to delete selection otherwise we would fix the current position self.delete(self.position, Tkinter.END) else: # set position to end so selection starts where textentry ended self.position = len(self.get()) # collect hits _hits = [] for element in self._completion_list: if element.lower().startswith(self.get().lower()): # Match case insensitively _hits.append(element) # if we have a new hit list, keep this in mind if _hits != self._hits: self._hit_index = 0 self._hits=_hits # only allow cycling if we are in a known hit list if _hits == self._hits and self._hits: self._hit_index = (self._hit_index + delta) % len(self._hits) # now finally perform the auto completion if self._hits: self.delete(0,Tkinter.END) self.insert(0,self._hits[self._hit_index]) self.select_range(self.position,Tkinter.END) def handle_keyrelease(self, event): """event handler for the keyrelease event on this widget""" if event.keysym == "BackSpace": self.delete(self.index(Tkinter.INSERT), Tkinter.END) self.position = self.index(Tkinter.END) if event.keysym == "Left": if self.position < self.index(Tkinter.END): # delete the selection self.delete(self.position, Tkinter.END) else: self.position = self.position-1 # delete one character self.delete(self.position, Tkinter.END) if event.keysym == "Right": self.position = self.index(Tkinter.END) # go to end (no selection) if len(event.keysym) == 1: self.autocomplete() # No need for up/down, we'll jump to the popup # list at the position of the autocompletiondef test(test_list): """Run a mini application to test the AutocompleteEntry Widget.""" root = Tkinter.Tk(className=' AutocompleteEntry demo') entry = AutocompleteEntry(root) entry.set_completion_list(test_list) entry.pack() entry.focus_set() combo = AutocompleteCombobox(root) combo.set_completion_list(test_list) combo.pack() combo.focus_set() # I used a tiling WM with no controls, added a shortcut to quit root.bind('<Control-Q>', lambda event=None: root.destroy()) root.bind('<Control-q>', lambda event=None: root.destroy()) root.mainloop()if __name__ == '__main__': test_list = ('apple', 'banana', 'CranBerry', 'dogwood', 'alpha', 'Acorn', 'Anise' ) test(test_list)
