def _change_corpus(self, corpus):
# Populate the group and item list boxes
self._group_list.delete(0, Tkinter.END)
self._group_list.insert(Tkinter.END, '<all groups>')
for group in corpus.groups():
self._group_list.insert(Tkinter.END, group)
self._group_list.activate(0)
self._item_list.delete(0, Tkinter.END)
for item in corpus.items():
self._item_list.insert(Tkinter.END, item)
# Clear the raw/token displays
self._current_item = None
self._raw_text.delete(1.0, Tkinter.END)
self._tokenized_text.delete(1.0, Tkinter.END)
# Cache the corpus object and display its name as the window title
self._corpus = corpus
self._root.title('%s: NLTK corpus viewer' % corpus.name())
def __init__(self, root, corpora):
self._root = root
self._corpora = corpora
self._token_cache = {}
self._current_item = None
# Create a frame (window)
frame = Tkinter.Frame(root)
frame.pack(expand=1, fill='both')
# Set up a grid of widgets
fill = Tkinter.W + Tkinter.E + Tkinter.N + Tkinter.S
Tkinter.Label(frame, text='groups:').grid(row=0, sticky=Tkinter.W)
scrollbar = Tkinter.Scrollbar(frame, orient=Tkinter.VERTICAL)
self._group_list = Tkinter.Listbox(frame, yscrollcommand=scrollbar.set)
scrollbar.config(command=self._group_list.yview)
scrollbar.grid(column=1, row=1, sticky=fill)
self._group_list.grid(row=1, sticky=fill)
Tkinter.Label(frame, text='items:').grid(row=2, sticky=Tkinter.W)
scrollbar = Tkinter.Scrollbar(frame, orient=Tkinter.VERTICAL)
self._item_list = Tkinter.Listbox(frame, yscrollcommand=scrollbar.set)
scrollbar.config(command=self._item_list.yview)
scrollbar.grid(column=1, row=3, sticky=fill)
self._item_list.grid(row=3, sticky=fill)
Tkinter.Label(frame, text='raw text:').grid(column=2, row=0,
sticky=Tkinter.W)
self._rsb = Tkinter.Scrollbar(frame, orient=Tkinter.VERTICAL)
self._raw_text = Tkinter.Text(frame, yscrollcommand=self._rsb.set)
#self._rsb.config(command=self._raw_text.yview)
self._rsb.config(command=self._raw_text_view)
self._rsb.grid(column=3, row=1, sticky=fill)
self._raw_text.grid(column=2, row=1, sticky=fill)
Tkinter.Label(frame, text='tokens:').grid(column=2, row=2,
sticky=Tkinter.W)
self._tsb = Tkinter.Scrollbar(frame, orient=Tkinter.VERTICAL)
self._tokenized_text = Tkinter.Text(frame, yscrollcommand=self._tsb.set)
#self._tsb.config(command=self._tokenized_text.yview)
self._tsb.config(command=self._tokenized_text_view)
self._tsb.grid(column=3, row=3, sticky=fill)
self._tokenized_text.grid(column=2, row=3, sticky=fill)
# Set up the menu
menu = Tkinter.Menu(frame)
root.config(menu=menu)
corpus_menu = Tkinter.Menu(menu)
menu.add_cascade(label='Corpus', menu=corpus_menu)
for corpus in corpora:
corpus_menu.add_radiobutton(label=corpus.name(),
command=lambda c=corpus: self._change_corpus(c))
corpus_menu.add_separator()
corpus_menu.add_command(label='Exit', command=root.quit)
# Register call-backs for selection in each list box
self._group_list.bind('<Double-Button-1>', self._group_selected)
self._item_list.bind('<Double-Button-1>', self._item_selected)
# Default to the first corpus
self._change_corpus(corpora[0])
