예제 #1
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    def _init_exampleListbox(self, parent):
        self._exampleFrame = listframe = Frame(parent)
        self._exampleFrame.pack(fill="both", side="left", padx=2)
        self._exampleList_label = Label(self._exampleFrame,
                                        font=self._boldfont,
                                        text="Examples")
        self._exampleList_label.pack()
        self._exampleList = Listbox(
            self._exampleFrame,
            selectmode="single",
            relief="groove",
            background="white",
            foreground="#909090",
            font=self._font,
            selectforeground="#004040",
            selectbackground="#c0f0c0",
        )

        self._exampleList.pack(side="right", fill="both", expand=1)

        for example in self._examples:
            self._exampleList.insert("end", ("  %s" % example))
        self._exampleList.config(height=min(len(self._examples), 25), width=40)

        # Add a scrollbar if there are more than 25 examples.
        if len(self._examples) > 25:
            listscroll = Scrollbar(self._exampleFrame, orient="vertical")
            self._exampleList.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._exampleList.yview)
            listscroll.pack(side="left", fill="y")

        # If they select a example, apply it.
        self._exampleList.bind("<<ListboxSelect>>", self._exampleList_select)
예제 #2
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파일: cfg.py 프로젝트: EricChh20/EZ-Mail
 def _init_startframe(self):
     frame = self._startframe = Frame(self._top)
     self._start = Entry(frame)
     self._start.pack(side='right')
     Label(frame, text='Start Symbol:').pack(side='right')
     Label(frame, text='Productions:').pack(side='left')
     self._start.insert(0, self._cfg.start().symbol())
예제 #3
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    def _init_grammar(self, parent):
        # Grammar view.
        self._prodframe = listframe = Frame(parent)
        self._prodframe.pack(fill='both', side='left', padx=2)
        self._prodlist_label = Label(
            self._prodframe, font=self._boldfont, text='Available Expansions'
        )
        self._prodlist_label.pack()
        self._prodlist = Listbox(
            self._prodframe,
            selectmode='single',
            relief='groove',
            background='white',
            foreground='#909090',
            font=self._font,
            selectforeground='#004040',
            selectbackground='#c0f0c0',
        )

        self._prodlist.pack(side='right', fill='both', expand=1)

        self._productions = list(self._parser.grammar().productions())
        for production in self._productions:
            self._prodlist.insert('end', ('  %s' % production))
        self._prodlist.config(height=min(len(self._productions), 25))

        # Add a scrollbar if there are more than 25 productions.
        if len(self._productions) > 25:
            listscroll = Scrollbar(self._prodframe, orient='vertical')
            self._prodlist.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._prodlist.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a production, apply it.
        self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
예제 #4
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    def _init_readingListbox(self, parent):
        self._readingFrame = listframe = Frame(parent)
        self._readingFrame.pack(fill='both', side='left', padx=2)
        self._readingList_label = Label(self._readingFrame,
                                        font=self._boldfont,
                                        text='Readings')
        self._readingList_label.pack()
        self._readingList = Listbox(self._readingFrame,
                                    selectmode='single',
                                    relief='groove',
                                    background='white',
                                    foreground='#909090',
                                    font=self._font,
                                    selectforeground='#004040',
                                    selectbackground='#c0f0c0')

        self._readingList.pack(side='right', fill='both', expand=1)

        # Add a scrollbar if there are more than 25 examples.
        listscroll = Scrollbar(self._readingFrame, orient='vertical')
        self._readingList.config(yscrollcommand=listscroll.set)
        listscroll.config(command=self._readingList.yview)
        listscroll.pack(side='right', fill='y')

        self._populate_readingListbox()
예제 #5
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    def _init_exampleListbox(self, parent):
        self._exampleFrame = listframe = Frame(parent)
        self._exampleFrame.pack(fill='both', side='left', padx=2)
        self._exampleList_label = Label(self._exampleFrame,
                                        font=self._boldfont,
                                        text='Examples')
        self._exampleList_label.pack()
        self._exampleList = Listbox(self._exampleFrame,
                                    selectmode='single',
                                    relief='groove',
                                    background='white',
                                    foreground='#909090',
                                    font=self._font,
                                    selectforeground='#004040',
                                    selectbackground='#c0f0c0')

        self._exampleList.pack(side='right', fill='both', expand=1)

        for example in self._examples:
            self._exampleList.insert('end', ('  %s' % example))
        self._exampleList.config(height=min(len(self._examples), 25), width=40)

        # Add a scrollbar if there are more than 25 examples.
        if len(self._examples) > 25:
            listscroll = Scrollbar(self._exampleFrame, orient='vertical')
            self._exampleList.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._exampleList.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a example, apply it.
        self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)
예제 #6
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파일: cfg.py 프로젝트: zlpmichelle/nltk
 def _init_startframe(self):
     frame = self._startframe = Frame(self._top)
     self._start = Entry(frame)
     self._start.pack(side="right")
     Label(frame, text="Start Symbol:").pack(side="right")
     Label(frame, text="Productions:").pack(side="left")
     self._start.insert(0, self._cfg.start().symbol())
예제 #7
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    def _init_grammar(self, parent):
        # Grammar view.
        self._prodframe = listframe = Frame(parent)
        self._prodframe.pack(fill="both", side="left", padx=2)
        self._prodlist_label = Label(self._prodframe,
                                     font=self._boldfont,
                                     text="Available Expansions")
        self._prodlist_label.pack()
        self._prodlist = Listbox(
            self._prodframe,
            selectmode="single",
            relief="groove",
            background="white",
            foreground="#909090",
            font=self._font,
            selectforeground="#004040",
            selectbackground="#c0f0c0",
        )

        self._prodlist.pack(side="right", fill="both", expand=1)

        self._productions = list(self._parser.grammar().productions())
        for production in self._productions:
            self._prodlist.insert("end", ("  %s" % production))
        self._prodlist.config(height=min(len(self._productions), 25))

        # Add a scrollbar if there are more than 25 productions.
        if len(self._productions) > 25:
            listscroll = Scrollbar(self._prodframe, orient="vertical")
            self._prodlist.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._prodlist.yview)
            listscroll.pack(side="left", fill="y")

        # If they select a production, apply it.
        self._prodlist.bind("<<ListboxSelect>>", self._prodlist_select)
예제 #8
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    def _init_readingListbox(self, parent):
        self._readingFrame = listframe = Frame(parent)
        self._readingFrame.pack(fill="both", side="left", padx=2)
        self._readingList_label = Label(self._readingFrame,
                                        font=self._boldfont,
                                        text="Readings")
        self._readingList_label.pack()
        self._readingList = Listbox(
            self._readingFrame,
            selectmode="single",
            relief="groove",
            background="white",
            foreground="#909090",
            font=self._font,
            selectforeground="#004040",
            selectbackground="#c0f0c0",
        )

        self._readingList.pack(side="right", fill="both", expand=1)

        # Add a scrollbar if there are more than 25 examples.
        listscroll = Scrollbar(self._readingFrame, orient="vertical")
        self._readingList.config(yscrollcommand=listscroll.set)
        listscroll.config(command=self._readingList.yview)
        listscroll.pack(side="right", fill="y")

        self._populate_readingListbox()
예제 #9
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 def _init_status(self, parent):
     self.status = Label(parent,
                         justify=LEFT,
                         relief=SUNKEN,
                         background=self._BACKGROUND_COLOUR,
                         border=0,
                         padx=1,
                         pady=0)
     self.status.pack(side='top', anchor='sw')
    def _create_ui(self):
        '''Create all UI objects.'''

        #self._tl = Label(self, text="Staged Ship", f)
        self._sl = Label(self, textvariable=self._ship_name)
        self._c = Canvas(self)
        self._c.config(width=self.CANVAS_WIDTH)
        self._rb = Button(self,
                          text="Rotate",
                          command=self.rotate_current_ship)

        self.pack_ui()
예제 #11
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class Zone:
    def __init__(self, image, initialField, initialText):
        frm = Frame(root)
        frm.config(background="white")
        self.image = PhotoImage(format='gif',data=images[image.upper()])
        self.imageDimmed = PhotoImage(format='gif',data=images[image])
        self.img = Label(frm)
        self.img.config(borderwidth=0)
        self.img.pack(side = "left")
        self.fld = Text(frm, **fieldParams)
        self.initScrollText(frm,self.fld,initialField)
        frm = Frame(root)
        self.txt = Text(frm, **textParams)
        self.initScrollText(frm,self.txt,initialText)
        for i in range(2):
            self.txt.tag_config(colors[i], background = colors[i])
            self.txt.tag_config("emph"+colors[i], foreground = emphColors[i])
    def initScrollText(self,frm,txt,contents):
        scl = Scrollbar(frm)
        scl.config(command = txt.yview)
        scl.pack(side="right",fill="y")
        txt.pack(side = "left", expand=True, fill="x")
        txt.config(yscrollcommand = scl.set)
        txt.insert("1.0",contents)
        frm.pack(fill = "x")
        Frame(height=2, bd=1, relief="ridge").pack(fill="x")
    def refresh(self):
        self.colorCycle = itertools.cycle(colors)
        try:
            self.substitute()
            self.img.config(image = self.image)
        except re.error:
            self.img.config(image = self.imageDimmed)
예제 #12
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파일: statusbar.py 프로젝트: ufwt/qdt
class Statusbar(GUIFrame):
    def __init__(self, *args, **kw):
        GUIFrame.__init__(self, *args, **kw)

        # Empty status bar still must get its space in parent widget.
        self.padding = Label(self)
        self.padding.pack(fill=FILL_X, expand=1, side=SIDE_RIGHT)

    def _gen_label(self, string_var, **lb_args):
        return VarLabel(self,
                        bd=1,
                        relief=RELIEF_SUNKEN,
                        anchor=ANCHOR_W,
                        textvariable=string_var,
                        **lb_args)

    def repack(self, widget, side):
        """ Original 'pack' method adds widgets from the `side` of the frame to
its center. E.g. a new widget packed with flag `RIGHT` is appended at the left
of any other widget added to the RIGHT side before it. I.e. to add a new widget
at the right (left) of any other, all packed widgets must be repacked and
the new widget must be added before them.

    This method also takes into account padding label.
        """

        slaves = list(self.pack_slaves())

        sides = [side]

        for slave in slaves:
            sides.append(pack_info(slave)["side"])
            slave.pack_forget()

        slaves.insert(0, widget)

        for slave, side, junk in zip(slaves, sides, range(0, len(slaves) - 1)):
            slave.pack(fill=FILL_X, side=side)

        self.padding.pack(fill=FILL_X, expand=1, side=SIDE_RIGHT)

    def right(self, string_var, **lb_args):
        lb = self._gen_label(string_var, **lb_args)
        self.repack(lb, SIDE_RIGHT)
        return lb

    def left(self, string_var, **lb_args):
        lb = self._gen_label(string_var, **lb_args)
        self.repack(lb, SIDE_LEFT)
        return lb
예제 #13
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class Zone:
    def __init__(self, image, initialField, initialText):
        frm = Frame(root)
        frm.config(background="white")
        self.image = PhotoImage(format="gif", data=images[image.upper()])
        self.imageDimmed = PhotoImage(format="gif", data=images[image])
        self.img = Label(frm)
        self.img.config(borderwidth=0)
        self.img.pack(side="left")
        self.fld = Text(frm, **fieldParams)
        self.initScrollText(frm, self.fld, initialField)
        frm = Frame(root)
        self.txt = Text(frm, **textParams)
        self.initScrollText(frm, self.txt, initialText)
        for i in range(2):
            self.txt.tag_config(colors[i], background=colors[i])
            self.txt.tag_config("emph" + colors[i], foreground=emphColors[i])

    def initScrollText(self, frm, txt, contents):
        scl = Scrollbar(frm)
        scl.config(command=txt.yview)
        scl.pack(side="right", fill="y")
        txt.pack(side="left", expand=True, fill="x")
        txt.config(yscrollcommand=scl.set)
        txt.insert("1.0", contents)
        frm.pack(fill="x")
        Frame(height=2, bd=1, relief="ridge").pack(fill="x")

    def refresh(self):
        self.colorCycle = itertools.cycle(colors)
        try:
            self.substitute()
            self.img.config(image=self.image)
        except re.error:
            self.img.config(image=self.imageDimmed)
 def _init_feedback(self, parent):
     self._feedbackframe = feedbackframe = Frame(parent)
     feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
     self._lastoper_label = Label(feedbackframe, text='Last Operation:',
                                  font=self._font)
     self._lastoper_label.pack(side='left')
     lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
     lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
     self._lastoper1 = Label(lastoperframe, foreground='#007070',
                             background='#f0f0f0', font=self._font)
     self._lastoper2 = Label(lastoperframe, anchor='w', width=30,
                             foreground='#004040', background='#f0f0f0',
                             font=self._font)
     self._lastoper1.pack(side='left')
     self._lastoper2.pack(side='left', fill='x', expand=1)
예제 #15
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    def doGUI(self, hostname=None):
        self.master = Tk()
        self.master.title('Blessclient - MFA')
        textmsg = 'Enter your AWS MFA code: '
        if hostname:
            textmsg = 'Enter your AWS MFA code to connect to {}: '.format(
                hostname)
        Label(self.master, text=textmsg).grid(row=0)
        self.e1 = Entry(self.master)
        self.e1.grid(row=0, column=1, padx=4)
        Button(self.master,
               text='OK',
               command=self.show_entry_fields,
               default=ACTIVE).grid(row=3, column=0, sticky=W, pady=4)
        Button(self.master, text='Cancel', command=self.quit).grid(row=3,
                                                                   column=1,
                                                                   sticky=W,
                                                                   pady=4)

        self.center()
        self.master.bind('<Return>', self.show_entry_fields)
        self.master.lift()
        self.master.attributes('-topmost', True)
        self.master.focus_force()
        self.e1.focus_set()

        if platform.system() == 'Darwin':
            # Hack to get the GUI dialog focused in OSX
            # https://stackoverflow.com/questions/1892339/how-to-make-a-tkinter-window-jump-to-the-front/37235492#37235492
            tmpl = 'tell application "System Events" to set frontmost of every process whose unix id is {} to true'
            script = tmpl.format(os.getpid())
            subprocess.check_call(['/usr/bin/osascript', '-e', script])

        mainloop()
예제 #16
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 def _init_results_box(self, parent):
     innerframe = Frame(parent)
     i1 = Frame(innerframe)
     i2 = Frame(innerframe)
     vscrollbar = Scrollbar(i1, borderwidth=1)
     hscrollbar = Scrollbar(i2, borderwidth=1, orient="horiz")
     self.results_box = Text(
         i1,
         font=Font(family="courier", size="16"),
         state="disabled",
         borderwidth=1,
         yscrollcommand=vscrollbar.set,
         xscrollcommand=hscrollbar.set,
         wrap="none",
         width="40",
         height="20",
         exportselection=1,
     )
     self.results_box.pack(side="left", fill="both", expand=True)
     vscrollbar.pack(side="left", fill="y", anchor="e")
     vscrollbar.config(command=self.results_box.yview)
     hscrollbar.pack(side="left", fill="x", expand=True, anchor="w")
     hscrollbar.config(command=self.results_box.xview)
     # there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
     Label(i2, text="   ",
           background=self._BACKGROUND_COLOUR).pack(side="left", anchor="e")
     i1.pack(side="top", fill="both", expand=True, anchor="n")
     i2.pack(side="bottom", fill="x", anchor="s")
     innerframe.pack(side="top", fill="both", expand=True)
예제 #17
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    def _init_corpus_select(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.var = StringVar(innerframe)
        self.var.set(self.model.DEFAULT_CORPUS)
        Label(
            innerframe,
            justify=LEFT,
            text=' Corpus: ',
            background=self._BACKGROUND_COLOUR,
            padx=2,
            pady=1,
            border=0,
        ).pack(side='left')

        other_corpora = list(self.model.CORPORA.keys()).remove(
            self.model.DEFAULT_CORPUS)
        om = OptionMenu(innerframe,
                        self.var,
                        self.model.DEFAULT_CORPUS,
                        command=self.corpus_selected,
                        *self.model.non_default_corpora())
        om['borderwidth'] = 0
        om['highlightthickness'] = 1
        om.pack(side='left')
        innerframe.pack(side='top', fill='x', anchor='n')
    def _init_grammar(self, parent):
        # Grammar view.
        self._prodframe = listframe = Frame(parent)
        self._prodframe.pack(fill='both', side='left', padx=2)
        self._prodlist_label = Label(self._prodframe, font=self._boldfont,
                                     text='Available Expansions')
        self._prodlist_label.pack()
        self._prodlist = Listbox(self._prodframe, selectmode='single',
                                 relief='groove', background='white',
                                 foreground='#909090', font=self._font,
                                 selectforeground='#004040',
                                 selectbackground='#c0f0c0')

        self._prodlist.pack(side='right', fill='both', expand=1)

        self._productions = list(self._parser.grammar().productions())
        for production in self._productions:
            self._prodlist.insert('end', ('  %s' % production))
        self._prodlist.config(height=min(len(self._productions), 25))

        # Add a scrollbar if there are more than 25 productions.
        if len(self._productions) > 25:
            listscroll = Scrollbar(self._prodframe,
                                   orient='vertical')
            self._prodlist.config(yscrollcommand = listscroll.set)
            listscroll.config(command=self._prodlist.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a production, apply it.
        self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)
예제 #19
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파일: cfg.py 프로젝트: EricChh20/EZ-Mail
def demo():
    from nltk import Nonterminal, CFG
    nonterminals = 'S VP NP PP P N Name V Det'
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s)
                                           for s in nonterminals.split()]

    grammar = CFG.fromstring("""
    S -> NP VP
    PP -> P NP
    NP -> Det N
    NP -> NP PP
    VP -> V NP
    VP -> VP PP
    Det -> 'a'
    Det -> 'the'
    Det -> 'my'
    NP -> 'I'
    N -> 'dog'
    N -> 'man'
    N -> 'park'
    N -> 'statue'
    V -> 'saw'
    P -> 'in'
    P -> 'up'
    P -> 'over'
    P -> 'with'
    """)

    def cb(grammar): print(grammar)
    top = Tk()
    editor = CFGEditor(top, grammar, cb)
    Label(top, text='\nTesting CFG Editor\n').pack()
    Button(top, text='Quit', command=top.destroy).pack()
    top.mainloop()
    def _init_exampleListbox(self, parent):
        self._exampleFrame = listframe = Frame(parent)
        self._exampleFrame.pack(fill='both', side='left', padx=2)
        self._exampleList_label = Label(self._exampleFrame, font=self._boldfont,
                                     text='Examples')
        self._exampleList_label.pack()
        self._exampleList = Listbox(self._exampleFrame, selectmode='single',
                                 relief='groove', background='white',
                                 foreground='#909090', font=self._font,
                                 selectforeground='#004040',
                                 selectbackground='#c0f0c0')

        self._exampleList.pack(side='right', fill='both', expand=1)

        for example in self._examples:
            self._exampleList.insert('end', ('  %s' % example))
        self._exampleList.config(height=min(len(self._examples), 25), width=40)

        # Add a scrollbar if there are more than 25 examples.
        if len(self._examples) > 25:
            listscroll = Scrollbar(self._exampleFrame,
                                   orient='vertical')
            self._exampleList.config(yscrollcommand = listscroll.set)
            listscroll.config(command=self._exampleList.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a example, apply it.
        self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)
예제 #21
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 def _init_results_box(self, parent):
     innerframe = Frame(parent)
     i1 = Frame(innerframe)
     i2 = Frame(innerframe)
     vscrollbar = Scrollbar(i1, borderwidth=1)
     hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
     self.results_box = Text(i1,
                             font=Font(family='courier', size='16'),
                             state='disabled',
                             borderwidth=1,
                             yscrollcommand=vscrollbar.set,
                             xscrollcommand=hscrollbar.set,
                             wrap='none',
                             width='40',
                             height='20',
                             exportselection=1)
     self.results_box.pack(side='left', fill='both', expand=True)
     self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG,
                                 foreground=self._HIGHLIGHT_WORD_COLOUR)
     self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG,
                                 foreground=self._HIGHLIGHT_LABEL_COLOUR)
     vscrollbar.pack(side='left', fill='y', anchor='e')
     vscrollbar.config(command=self.results_box.yview)
     hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
     hscrollbar.config(command=self.results_box.xview)
     #there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
     Label(i2, text='   ',
           background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
     i1.pack(side='top', fill='both', expand=True, anchor='n')
     i2.pack(side='bottom', fill='x', anchor='s')
     innerframe.pack(side='top', fill='both', expand=True)
예제 #22
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    def doGUI(self, hostname=None):
        self.master = Tk()
        self.master.title('Blessclient - MFA')
        textmsg = 'Enter your AWS MFA code: '
        if hostname:
            textmsg = 'Enter your AWS MFA code to connect to {}: '.format(
                hostname)
        Label(self.master, text=textmsg).grid(row=0)
        self.e1 = Entry(self.master)
        self.e1.grid(row=0, column=1, padx=4)
        Button(self.master,
               text='OK',
               command=self.show_entry_fields,
               default=ACTIVE).grid(row=3, column=0, sticky=W, pady=4)
        Button(self.master, text='Cancel', command=self.quit).grid(row=3,
                                                                   column=1,
                                                                   sticky=W,
                                                                   pady=4)

        self.center()
        self.master.bind('<Return>', self.show_entry_fields)
        self.master.lift()
        self.master.attributes('-topmost', True)
        self.master.focus_force()
        self.e1.focus_set()

        if platform.system() == 'Darwin':
            # Hack to get the GUI dialog focused in OSX
            os.system(
                '/usr/bin/osascript -e \'tell app "Finder" to set frontmost of process "python" to true\''
            )

        mainloop()
예제 #23
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    def _init_readingListbox(self, parent):
        self._readingFrame = listframe = Frame(parent)
        self._readingFrame.pack(fill='both', side='left', padx=2)
        self._readingList_label = Label(
            self._readingFrame, font=self._boldfont, text='Readings'
        )
        self._readingList_label.pack()
        self._readingList = Listbox(
            self._readingFrame,
            selectmode='single',
            relief='groove',
            background='white',
            foreground='#909090',
            font=self._font,
            selectforeground='#004040',
            selectbackground='#c0f0c0',
        )

        self._readingList.pack(side='right', fill='both', expand=1)

        # Add a scrollbar if there are more than 25 examples.
        listscroll = Scrollbar(self._readingFrame, orient='vertical')
        self._readingList.config(yscrollcommand=listscroll.set)
        listscroll.config(command=self._readingList.yview)
        listscroll.pack(side='right', fill='y')

        self._populate_readingListbox()
예제 #24
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 def __init__(self, image, initialField, initialText):
     frm = Frame(root)
     frm.config(background="white")
     self.image = PhotoImage(format="gif", data=images[image.upper()])
     self.imageDimmed = PhotoImage(format="gif", data=images[image])
     self.img = Label(frm)
     self.img.config(borderwidth=0)
     self.img.pack(side="left")
     self.fld = Text(frm, **fieldParams)
     self.initScrollText(frm, self.fld, initialField)
     frm = Frame(root)
     self.txt = Text(frm, **textParams)
     self.initScrollText(frm, self.txt, initialText)
     for i in range(2):
         self.txt.tag_config(colors[i], background=colors[i])
         self.txt.tag_config("emph" + colors[i], foreground=emphColors[i])
예제 #25
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 def _create_body(self, message, value, **extra):
     frame = Frame(self)
     Label(frame, text=message, anchor=W, justify=LEFT,
           wraplength=800).pack(fill=BOTH)
     selector = self._create_selector(frame, value, **extra)
     if selector:
         selector.pack(fill=BOTH)
         selector.focus_set()
     frame.pack(padx=5, pady=5, expand=1, fill=BOTH)
예제 #26
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 def _add_grids(self):
     '''Create UI containers for the player grids.'''
 
     self.my_grid_frame = PlayerGridFrame(self)
     self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
     l1 = Label(self.my_grid_frame, text="Your Grid")
     l1.pack()
     self.my_grid = ShipGrid(self.my_grid_frame, True)
     self.my_grid.pack(side=LEFT, pady=20)
     
     self.their_grid_frame = PlayerGridFrame(self)
     self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
     self.their_grid_label = Label(self.their_grid_frame, text="Opponent's Grid")
     self.their_grid_label.pack()
     self.their_grid = ShipGrid(self.their_grid_frame, False)
     self.their_grid.pack(side=LEFT, pady=20)
     
     self._add_grid_events()
예제 #27
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    def append_row_to_grid(self, grid, rows, mio):
        # update delete button
        if not rows:
            bt_del = getattr(self, "bt_del_" + mio)
            bt_del.config(state="normal")

        row = len(rows)

        l = Label(grid, text=str(row) + ":")
        l.grid(row=row, column=0, sticky="NES")

        v = StringVar()
        e = HKEntry(grid, textvariable=v)
        e.grid(row=row, column=1, sticky="NEWS")

        row_desc = (l, e, v)

        rows.append(row_desc)

        return row_desc
예제 #28
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    def __init__(self, *args, **kw):
        # "textvariable" argument has same effect to VarLabel as "text"
        try:
            var = kw.pop("textvariable")
        except KeyError:
            pass
        else:
            if "text" in kw:
                raise RuntimeError('"text" and "textvariable" '
                    'arguments cannot be passed together to a VarLabel'
                )
            kw["text"] = var

        if "text" in kw:
            self.text_var = kw.pop("text")
            kw["text"] = self.text_var.get()
        else:
            self.text_var = StringVar("")
        Label.__init__(self, *args, **kw)
        self.text_var.trace_variable("w", self.on_var_changed)
예제 #29
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def show_qr(path):
    import platform
    try:
        from six.moves.tkinter import Tk, Label
    except ImportError:
        raise SystemError('缺少Tkinter模块, 可使用sudo pip install Tkinter尝试安装')
    try:
        from PIL import ImageTk, Image
    except ImportError:
        raise SystemError('缺少PIL模块, 可使用sudo pip install PIL尝试安装')

    system = platform.system()
    if system == 'Darwin':  # 如果是Mac OS X
        img = Image.open(path)
        img.show()
    else:
        root = Tk()
        img = ImageTk.PhotoImage(Image.open(path))
        panel = Label(root, image=img)
        panel.pack(side="bottom", fill="both", expand="yes")
        root.mainloop()
예제 #30
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파일: bot.py 프로젝트: SKnife/SmartQQBot
def show_qr(path):
    import platform
    try:
        from six.moves.tkinter import Tk, Label
    except ImportError:
        raise SystemError('缺少Tkinter模块, 可使用sudo pip install Tkinter尝试安装')
    try:
        from PIL import ImageTk, Image
    except ImportError:
        raise SystemError('缺少PIL模块, 可使用sudo pip install PIL尝试安装')

    system = platform.system()
    if system == 'Darwin':  # 如果是Mac OS X
        img = Image.open(path)
        img.show()
    else:
        root = Tk()
        img = ImageTk.PhotoImage(
            Image.open(path)
        )
        panel = Label(root, image=img)
        panel.pack(side="bottom", fill="both", expand="yes")
        root.mainloop()
예제 #31
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    def _append(self, heading, content):
        inner = self._inner

        inner.rowconfigure(self._next_row, weight=0)
        inner.rowconfigure(self._next_row + 1, weight=1)

        Label(inner, text=heading).grid(row=self._next_row,
                                        column=0,
                                        sticky="NSW")
        t = Text(inner, wrap=WORD)
        t.grid(row=self._next_row + 1, column=0, sticky="NESW")
        t.insert(END, content)
        t.config(state=DISABLED)

        self._next_row += 2
예제 #32
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 def __init__(self, image, initialField, initialText):
     frm = Frame(root)
     frm.config(background="white")
     self.image = PhotoImage(format='gif',data=images[image.upper()])
     self.imageDimmed = PhotoImage(format='gif',data=images[image])
     self.img = Label(frm)
     self.img.config(borderwidth=0)
     self.img.pack(side = "left")
     self.fld = Text(frm, **fieldParams)
     self.initScrollText(frm,self.fld,initialField)
     frm = Frame(root)
     self.txt = Text(frm, **textParams)
     self.initScrollText(frm,self.txt,initialText)
     for i in range(2):
         self.txt.tag_config(colors[i], background = colors[i])
         self.txt.tag_config("emph"+colors[i], foreground = emphColors[i])
예제 #33
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    def _create_ui(self):
        '''Create the UI elements.'''

        self.ship_labels = {}
        i = 0

        for short_name, full_name in Ship.NAMES.items():
            self.ship_labels[short_name] = Label(
                self,
                text=full_name.title(),
                fg=self.SHIP_ALIVE,
                justify=LEFT,
            )
            self.ship_labels[short_name].grid(row=i,
                                              column=0,
                                              sticky=W,
                                              ipady=5)
            i += 1
예제 #34
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 def _init_feedback(self, parent):
     self._feedbackframe = feedbackframe = Frame(parent)
     feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
     self._lastoper_label = Label(feedbackframe, text='Last Operation:',
                                  font=self._font)
     self._lastoper_label.pack(side='left')
     lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
     lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
     self._lastoper1 = Label(lastoperframe, foreground='#007070',
                             background='#f0f0f0', font=self._font)
     self._lastoper2 = Label(lastoperframe, anchor='w', width=30,
                             foreground='#004040', background='#f0f0f0',
                             font=self._font)
     self._lastoper1.pack(side='left')
     self._lastoper2.pack(side='left', fill='x', expand=1)
예제 #35
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    def _add_grids(self):
        '''Create UI containers for the player grids.'''

        self.my_grid_frame = PlayerGridFrame(self)
        self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH,
                                 y=self.Y_PADDING)
        l1 = Label(self.my_grid_frame, text="Your Grid")
        l1.pack()
        self.my_grid = ShipGrid(self.my_grid_frame, True)
        self.my_grid.pack(side=LEFT, pady=20)

        self.their_grid_frame = PlayerGridFrame(self)
        self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 +
                                    self.SHIP_PANEL_WIDTH,
                                    y=self.Y_PADDING)
        self.their_grid_label = Label(self.their_grid_frame,
                                      text="Opponent's Grid")
        self.their_grid_label.pack()
        self.their_grid = ShipGrid(self.their_grid_frame, False)
        self.their_grid.pack(side=LEFT, pady=20)

        self._add_grid_events()
예제 #36
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 def _init_feedback(self, parent):
     self._feedbackframe = feedbackframe = Frame(parent)
     feedbackframe.pack(fill="x", side="bottom", padx=3, pady=3)
     self._lastoper_label = Label(feedbackframe,
                                  text="Last Operation:",
                                  font=self._font)
     self._lastoper_label.pack(side="left")
     lastoperframe = Frame(feedbackframe, relief="sunken", border=1)
     lastoperframe.pack(fill="x", side="right", expand=1, padx=5)
     self._lastoper1 = Label(lastoperframe,
                             foreground="#007070",
                             background="#f0f0f0",
                             font=self._font)
     self._lastoper2 = Label(
         lastoperframe,
         anchor="w",
         width=30,
         foreground="#004040",
         background="#f0f0f0",
         font=self._font,
     )
     self._lastoper1.pack(side="left")
     self._lastoper2.pack(side="left", fill="x", expand=1)
예제 #37
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    def __init__(self, master, columns, column_weights=None, cnf={}, **kw):
        """
        Construct a new multi-column listbox widget.

        :param master: The widget that should contain the new
            multi-column listbox.

        :param columns: Specifies what columns should be included in
            the new multi-column listbox.  If ``columns`` is an integer,
            the it is the number of columns to include.  If it is
            a list, then its length indicates the number of columns
            to include; and each element of the list will be used as
            a label for the corresponding column.

        :param cnf, kw: Configuration parameters for this widget.
            Use ``label_*`` to configure all labels; and ``listbox_*``
            to configure all listboxes.  E.g.:

                >>> mlb = MultiListbox(master, 5, label_foreground='red')
        """
        # If columns was specified as an int, convert it to a list.
        if isinstance(columns, int):
            columns = list(range(columns))
            include_labels = False
        else:
            include_labels = True

        if len(columns) == 0:
            raise ValueError("Expected at least one column")

        # Instance variables
        self._column_names = tuple(columns)
        self._listboxes = []
        self._labels = []

        # Pick a default value for column_weights, if none was specified.
        if column_weights is None:
            column_weights = [1] * len(columns)
        elif len(column_weights) != len(columns):
            raise ValueError('Expected one column_weight for each column')
        self._column_weights = column_weights

        # Configure our widgets.
        Frame.__init__(self, master, **self.FRAME_CONFIG)
        self.grid_rowconfigure(1, weight=1)
        for i, label in enumerate(self._column_names):
            self.grid_columnconfigure(i, weight=column_weights[i])

            # Create a label for the column
            if include_labels:
                l = Label(self, text=label, **self.LABEL_CONFIG)
                self._labels.append(l)
                l.grid(column=i, row=0, sticky='news', padx=0, pady=0)
                l.column_index = i

            # Create a listbox for the column
            lb = Listbox(self, **self.LISTBOX_CONFIG)
            self._listboxes.append(lb)
            lb.grid(column=i, row=1, sticky='news', padx=0, pady=0)
            lb.column_index = i

            # Clicking or dragging selects:
            lb.bind('<Button-1>', self._select)
            lb.bind('<B1-Motion>', self._select)
            # Scroll whell scrolls:
            lb.bind('<Button-4>', lambda e: self._scroll(-1))
            lb.bind('<Button-5>', lambda e: self._scroll(+1))
            lb.bind('<MouseWheel>', lambda e: self._scroll(e.delta))
            # Button 2 can be used to scan:
            lb.bind('<Button-2>', lambda e: self.scan_mark(e.x, e.y))
            lb.bind('<B2-Motion>', lambda e: self.scan_dragto(e.x, e.y))
            # Dragging outside the window has no effect (diable
            # the default listbox behavior, which scrolls):
            lb.bind('<B1-Leave>', lambda e: 'break')
            # Columns can be resized by dragging them:
            l.bind('<Button-1>', self._resize_column)

        # Columns can be resized by dragging them.  (This binding is
        # used if they click on the grid between columns:)
        self.bind('<Button-1>', self._resize_column)

        # Set up key bindings for the widget:
        self.bind('<Up>', lambda e: self.select(delta=-1))
        self.bind('<Down>', lambda e: self.select(delta=1))
        self.bind('<Prior>', lambda e: self.select(delta=-self._pagesize()))
        self.bind('<Next>', lambda e: self.select(delta=self._pagesize()))

        # Configuration customizations
        self.configure(cnf, **kw)
예제 #38
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class DrtGlueDemo(object):
    def __init__(self, examples):
        # Set up the main window.
        self._top = Tk()
        self._top.title('DRT Glue Demo')

        # Set up key bindings.
        self._init_bindings()

        # Initialize the fonts.self._error = None
        self._init_fonts(self._top)

        self._examples = examples
        self._readingCache = [None for example in examples]

        # The user can hide the grammar.
        self._show_grammar = IntVar(self._top)
        self._show_grammar.set(1)

        # Set the data to None
        self._curExample = -1
        self._readings = []
        self._drs = None
        self._drsWidget = None
        self._error = None

        self._init_glue()

        # Create the basic frames.
        self._init_menubar(self._top)
        self._init_buttons(self._top)
        self._init_exampleListbox(self._top)
        self._init_readingListbox(self._top)
        self._init_canvas(self._top)

        # Resize callback
        self._canvas.bind('<Configure>', self._configure)

    #########################################
    ##  Initialization Helpers
    #########################################

    def _init_glue(self):
        tagger = RegexpTagger([
            ('^(David|Mary|John)$', 'NNP'),
            ('^(walks|sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$',
             'VB'), ('^(go|order|vanish|find|approach)$', 'VB'),
            ('^(a)$', 'ex_quant'), ('^(every)$', 'univ_quant'),
            ('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
            ('^(big|gray|former)$', 'JJ'), ('^(him|himself)$', 'PRP')
        ])

        depparser = MaltParser(tagger=tagger)
        self._glue = DrtGlue(depparser=depparser, remove_duplicates=False)

    def _init_fonts(self, root):
        # See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
        self._sysfont = Font(font=Button()["font"])
        root.option_add("*Font", self._sysfont)

        # TWhat's our font size (default=same as sysfont)
        self._size = IntVar(root)
        self._size.set(self._sysfont.cget('size'))

        self._boldfont = Font(family='helvetica',
                              weight='bold',
                              size=self._size.get())
        self._font = Font(family='helvetica', size=self._size.get())
        if self._size.get() < 0: big = self._size.get() - 2
        else: big = self._size.get() + 2
        self._bigfont = Font(family='helvetica', weight='bold', size=big)

    def _init_exampleListbox(self, parent):
        self._exampleFrame = listframe = Frame(parent)
        self._exampleFrame.pack(fill='both', side='left', padx=2)
        self._exampleList_label = Label(self._exampleFrame,
                                        font=self._boldfont,
                                        text='Examples')
        self._exampleList_label.pack()
        self._exampleList = Listbox(self._exampleFrame,
                                    selectmode='single',
                                    relief='groove',
                                    background='white',
                                    foreground='#909090',
                                    font=self._font,
                                    selectforeground='#004040',
                                    selectbackground='#c0f0c0')

        self._exampleList.pack(side='right', fill='both', expand=1)

        for example in self._examples:
            self._exampleList.insert('end', ('  %s' % example))
        self._exampleList.config(height=min(len(self._examples), 25), width=40)

        # Add a scrollbar if there are more than 25 examples.
        if len(self._examples) > 25:
            listscroll = Scrollbar(self._exampleFrame, orient='vertical')
            self._exampleList.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._exampleList.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a example, apply it.
        self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)

    def _init_readingListbox(self, parent):
        self._readingFrame = listframe = Frame(parent)
        self._readingFrame.pack(fill='both', side='left', padx=2)
        self._readingList_label = Label(self._readingFrame,
                                        font=self._boldfont,
                                        text='Readings')
        self._readingList_label.pack()
        self._readingList = Listbox(self._readingFrame,
                                    selectmode='single',
                                    relief='groove',
                                    background='white',
                                    foreground='#909090',
                                    font=self._font,
                                    selectforeground='#004040',
                                    selectbackground='#c0f0c0')

        self._readingList.pack(side='right', fill='both', expand=1)

        # Add a scrollbar if there are more than 25 examples.
        listscroll = Scrollbar(self._readingFrame, orient='vertical')
        self._readingList.config(yscrollcommand=listscroll.set)
        listscroll.config(command=self._readingList.yview)
        listscroll.pack(side='right', fill='y')

        self._populate_readingListbox()

    def _populate_readingListbox(self):
        # Populate the listbox with integers
        self._readingList.delete(0, 'end')
        for i in range(len(self._readings)):
            self._readingList.insert('end', ('  %s' % (i + 1)))
        self._readingList.config(height=min(len(self._readings), 25), width=5)

        # If they select a example, apply it.
        self._readingList.bind('<<ListboxSelect>>', self._readingList_select)

    def _init_bindings(self):
        # Key bindings are a good thing.
        self._top.bind('<Control-q>', self.destroy)
        self._top.bind('<Control-x>', self.destroy)
        self._top.bind('<Escape>', self.destroy)
        self._top.bind('n', self.next)
        self._top.bind('<space>', self.next)
        self._top.bind('p', self.prev)
        self._top.bind('<BackSpace>', self.prev)

    def _init_buttons(self, parent):
        # Set up the frames.
        self._buttonframe = buttonframe = Frame(parent)
        buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
        Button(
            buttonframe,
            text='Prev',
            background='#90c0d0',
            foreground='black',
            command=self.prev,
        ).pack(side='left')
        Button(
            buttonframe,
            text='Next',
            background='#90c0d0',
            foreground='black',
            command=self.next,
        ).pack(side='left')

    def _configure(self, event):
        self._autostep = 0
        (x1, y1, x2, y2) = self._cframe.scrollregion()
        y2 = event.height - 6
        self._canvas['scrollregion'] = '%d %d %d %d' % (x1, y1, x2, y2)
        self._redraw()

    def _init_canvas(self, parent):
        self._cframe = CanvasFrame(
            parent,
            background='white',
            #width=525, height=250,
            closeenough=10,
            border=2,
            relief='sunken')
        self._cframe.pack(expand=1, fill='both', side='top', pady=2)
        canvas = self._canvas = self._cframe.canvas()

        # Initially, there's no tree or text
        self._tree = None
        self._textwidgets = []
        self._textline = None

    def _init_menubar(self, parent):
        menubar = Menu(parent)

        filemenu = Menu(menubar, tearoff=0)
        filemenu.add_command(label='Exit',
                             underline=1,
                             command=self.destroy,
                             accelerator='q')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        actionmenu = Menu(menubar, tearoff=0)
        actionmenu.add_command(label='Next',
                               underline=0,
                               command=self.next,
                               accelerator='n, Space')
        actionmenu.add_command(label='Previous',
                               underline=0,
                               command=self.prev,
                               accelerator='p, Backspace')
        menubar.add_cascade(label='Action', underline=0, menu=actionmenu)

        optionmenu = Menu(menubar, tearoff=0)
        optionmenu.add_checkbutton(label='Remove Duplicates',
                                   underline=0,
                                   variable=self._glue.remove_duplicates,
                                   command=self._toggle_remove_duplicates,
                                   accelerator='r')
        menubar.add_cascade(label='Options', underline=0, menu=optionmenu)

        viewmenu = Menu(menubar, tearoff=0)
        viewmenu.add_radiobutton(label='Tiny',
                                 variable=self._size,
                                 underline=0,
                                 value=10,
                                 command=self.resize)
        viewmenu.add_radiobutton(label='Small',
                                 variable=self._size,
                                 underline=0,
                                 value=12,
                                 command=self.resize)
        viewmenu.add_radiobutton(label='Medium',
                                 variable=self._size,
                                 underline=0,
                                 value=14,
                                 command=self.resize)
        viewmenu.add_radiobutton(label='Large',
                                 variable=self._size,
                                 underline=0,
                                 value=18,
                                 command=self.resize)
        viewmenu.add_radiobutton(label='Huge',
                                 variable=self._size,
                                 underline=0,
                                 value=24,
                                 command=self.resize)
        menubar.add_cascade(label='View', underline=0, menu=viewmenu)

        helpmenu = Menu(menubar, tearoff=0)
        helpmenu.add_command(label='About', underline=0, command=self.about)
        menubar.add_cascade(label='Help', underline=0, menu=helpmenu)

        parent.config(menu=menubar)

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        canvas = self._canvas

        # Delete the old DRS, widgets, etc.
        if self._drsWidget is not None:
            self._drsWidget.clear()

        if self._drs:
            self._drsWidget = DrsWidget(self._canvas, self._drs)
            self._drsWidget.draw()

        if self._error:
            self._drsWidget = DrsWidget(self._canvas, self._error)
            self._drsWidget.draw()

    #########################################
    ##  Button Callbacks
    #########################################

    def destroy(self, *e):
        self._autostep = 0
        if self._top is None: return
        self._top.destroy()
        self._top = None

    def prev(self, *e):
        selection = self._readingList.curselection()
        readingListSize = self._readingList.size()

        # there are readings
        if readingListSize > 0:
            # if one reading is currently selected
            if len(selection) == 1:
                index = int(selection[0])

                # if it's on (or before) the first item
                if index <= 0:
                    self._select_previous_example()
                else:
                    self._readingList_store_selection(index - 1)

            else:
                #select its first reading
                self._readingList_store_selection(readingListSize - 1)

        else:
            self._select_previous_example()

    def _select_previous_example(self):
        #if the current example is not the first example
        if self._curExample > 0:
            self._exampleList_store_selection(self._curExample - 1)
        else:
            #go to the last example
            self._exampleList_store_selection(len(self._examples) - 1)

    def next(self, *e):
        selection = self._readingList.curselection()
        readingListSize = self._readingList.size()

        # if there are readings
        if readingListSize > 0:
            # if one reading is currently selected
            if len(selection) == 1:
                index = int(selection[0])

                # if it's on (or past) the last item
                if index >= (readingListSize - 1):
                    self._select_next_example()
                else:
                    self._readingList_store_selection(index + 1)

            else:
                #select its first reading
                self._readingList_store_selection(0)

        else:
            self._select_next_example()

    def _select_next_example(self):
        #if the current example is not the last example
        if self._curExample < len(self._examples) - 1:
            self._exampleList_store_selection(self._curExample + 1)
        else:
            #go to the first example
            self._exampleList_store_selection(0)

    def about(self, *e):
        ABOUT = (
            "NLTK Discourse Representation Theory (DRT) Glue Semantics Demo\n"
            + "Written by Daniel H. Garrette")
        TITLE = 'About: NLTK DRT Glue Demo'
        try:
            from six.moves.tkinter_messagebox import Message
            Message(message=ABOUT, title=TITLE).show()
        except:
            ShowText(self._top, TITLE, ABOUT)

    def postscript(self, *e):
        self._autostep = 0
        self._cframe.print_to_file()

    def mainloop(self, *args, **kwargs):
        """
        Enter the Tkinter mainloop.  This function must be called if
        this demo is created from a non-interactive program (e.g.
        from a secript); otherwise, the demo will close as soon as
        the script completes.
        """
        if in_idle(): return
        self._top.mainloop(*args, **kwargs)

    def resize(self, size=None):
        if size is not None: self._size.set(size)
        size = self._size.get()
        self._font.configure(size=-(abs(size)))
        self._boldfont.configure(size=-(abs(size)))
        self._sysfont.configure(size=-(abs(size)))
        self._bigfont.configure(size=-(abs(size + 2)))
        self._redraw()

    def _toggle_remove_duplicates(self):
        self._glue.remove_duplicates = not self._glue.remove_duplicates

        self._exampleList.selection_clear(0, 'end')
        self._readings = []
        self._populate_readingListbox()
        self._readingCache = [None for ex in self._examples]
        self._curExample = -1
        self._error = None

        self._drs = None
        self._redraw()

    def _exampleList_select(self, event):
        selection = self._exampleList.curselection()
        if len(selection) != 1: return
        self._exampleList_store_selection(int(selection[0]))

    def _exampleList_store_selection(self, index):
        self._curExample = index
        example = self._examples[index]

        self._exampleList.selection_clear(0, 'end')
        if example:
            cache = self._readingCache[index]
            if cache:
                if isinstance(cache, list):
                    self._readings = cache
                    self._error = None
                else:
                    self._readings = []
                    self._error = cache
            else:
                try:
                    self._readings = self._glue.parse_to_meaning(example)
                    self._error = None
                    self._readingCache[index] = self._readings
                except Exception as e:
                    self._readings = []
                    self._error = DrtVariableExpression(
                        Variable('Error: ' + str(e)))
                    self._readingCache[index] = self._error

                    #add a star to the end of the example
                    self._exampleList.delete(index)
                    self._exampleList.insert(index, ('  %s *' % example))
                    self._exampleList.config(height=min(
                        len(self._examples), 25),
                                             width=40)

            self._populate_readingListbox()

            self._exampleList.selection_set(index)

            self._drs = None
            self._redraw()

    def _readingList_select(self, event):
        selection = self._readingList.curselection()
        if len(selection) != 1: return
        self._readingList_store_selection(int(selection[0]))

    def _readingList_store_selection(self, index):
        reading = self._readings[index]

        self._readingList.selection_clear(0, 'end')
        if reading:
            self._readingList.selection_set(index)

            self._drs = reading.simplify().normalize().resolve_anaphora()

            self._redraw()
예제 #39
0
class ShiftReduceApp(object):
    """
    A graphical tool for exploring the shift-reduce parser.  The tool
    displays the parser's stack and the remaining text, and allows the
    user to control the parser's operation.  In particular, the user
    can shift tokens onto the stack, and can perform reductions on the
    top elements of the stack.  A "step" button simply steps through
    the parsing process, performing the operations that
    ``nltk.parse.ShiftReduceParser`` would use.
    """

    def __init__(self, grammar, sent, trace=0):
        self._sent = sent
        self._parser = SteppingShiftReduceParser(grammar, trace)

        # Set up the main window.
        self._top = Tk()
        self._top.title('Shift Reduce Parser Application')

        # Animations.  animating_lock is a lock to prevent the demo
        # from performing new operations while it's animating.
        self._animating_lock = 0
        self._animate = IntVar(self._top)
        self._animate.set(10)  # = medium

        # The user can hide the grammar.
        self._show_grammar = IntVar(self._top)
        self._show_grammar.set(1)

        # Initialize fonts.
        self._init_fonts(self._top)

        # Set up key bindings.
        self._init_bindings()

        # Create the basic frames.
        self._init_menubar(self._top)
        self._init_buttons(self._top)
        self._init_feedback(self._top)
        self._init_grammar(self._top)
        self._init_canvas(self._top)

        # A popup menu for reducing.
        self._reduce_menu = Menu(self._canvas, tearoff=0)

        # Reset the demo, and set the feedback frame to empty.
        self.reset()
        self._lastoper1['text'] = ''

    #########################################
    ##  Initialization Helpers
    #########################################

    def _init_fonts(self, root):
        # See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
        self._sysfont = Font(font=Button()["font"])
        root.option_add("*Font", self._sysfont)

        # TWhat's our font size (default=same as sysfont)
        self._size = IntVar(root)
        self._size.set(self._sysfont.cget('size'))

        self._boldfont = Font(family='helvetica', weight='bold', size=self._size.get())
        self._font = Font(family='helvetica', size=self._size.get())

    def _init_grammar(self, parent):
        # Grammar view.
        self._prodframe = listframe = Frame(parent)
        self._prodframe.pack(fill='both', side='left', padx=2)
        self._prodlist_label = Label(
            self._prodframe, font=self._boldfont, text='Available Reductions'
        )
        self._prodlist_label.pack()
        self._prodlist = Listbox(
            self._prodframe,
            selectmode='single',
            relief='groove',
            background='white',
            foreground='#909090',
            font=self._font,
            selectforeground='#004040',
            selectbackground='#c0f0c0',
        )

        self._prodlist.pack(side='right', fill='both', expand=1)

        self._productions = list(self._parser.grammar().productions())
        for production in self._productions:
            self._prodlist.insert('end', (' %s' % production))
        self._prodlist.config(height=min(len(self._productions), 25))

        # Add a scrollbar if there are more than 25 productions.
        if 1:  # len(self._productions) > 25:
            listscroll = Scrollbar(self._prodframe, orient='vertical')
            self._prodlist.config(yscrollcommand=listscroll.set)
            listscroll.config(command=self._prodlist.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a production, apply it.
        self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)

        # When they hover over a production, highlight it.
        self._hover = -1
        self._prodlist.bind('<Motion>', self._highlight_hover)
        self._prodlist.bind('<Leave>', self._clear_hover)

    def _init_bindings(self):
        # Quit
        self._top.bind('<Control-q>', self.destroy)
        self._top.bind('<Control-x>', self.destroy)
        self._top.bind('<Alt-q>', self.destroy)
        self._top.bind('<Alt-x>', self.destroy)

        # Ops (step, shift, reduce, undo)
        self._top.bind('<space>', self.step)
        self._top.bind('<s>', self.shift)
        self._top.bind('<Alt-s>', self.shift)
        self._top.bind('<Control-s>', self.shift)
        self._top.bind('<r>', self.reduce)
        self._top.bind('<Alt-r>', self.reduce)
        self._top.bind('<Control-r>', self.reduce)
        self._top.bind('<Delete>', self.reset)
        self._top.bind('<u>', self.undo)
        self._top.bind('<Alt-u>', self.undo)
        self._top.bind('<Control-u>', self.undo)
        self._top.bind('<Control-z>', self.undo)
        self._top.bind('<BackSpace>', self.undo)

        # Misc
        self._top.bind('<Control-p>', self.postscript)
        self._top.bind('<Control-h>', self.help)
        self._top.bind('<F1>', self.help)
        self._top.bind('<Control-g>', self.edit_grammar)
        self._top.bind('<Control-t>', self.edit_sentence)

        # Animation speed control
        self._top.bind('-', lambda e, a=self._animate: a.set(20))
        self._top.bind('=', lambda e, a=self._animate: a.set(10))
        self._top.bind('+', lambda e, a=self._animate: a.set(4))

    def _init_buttons(self, parent):
        # Set up the frames.
        self._buttonframe = buttonframe = Frame(parent)
        buttonframe.pack(fill='none', side='bottom')
        Button(
            buttonframe,
            text='Step',
            background='#90c0d0',
            foreground='black',
            command=self.step,
        ).pack(side='left')
        Button(
            buttonframe,
            text='Shift',
            underline=0,
            background='#90f090',
            foreground='black',
            command=self.shift,
        ).pack(side='left')
        Button(
            buttonframe,
            text='Reduce',
            underline=0,
            background='#90f090',
            foreground='black',
            command=self.reduce,
        ).pack(side='left')
        Button(
            buttonframe,
            text='Undo',
            underline=0,
            background='#f0a0a0',
            foreground='black',
            command=self.undo,
        ).pack(side='left')

    def _init_menubar(self, parent):
        menubar = Menu(parent)

        filemenu = Menu(menubar, tearoff=0)
        filemenu.add_command(
            label='Reset Parser', underline=0, command=self.reset, accelerator='Del'
        )
        filemenu.add_command(
            label='Print to Postscript',
            underline=0,
            command=self.postscript,
            accelerator='Ctrl-p',
        )
        filemenu.add_command(
            label='Exit', underline=1, command=self.destroy, accelerator='Ctrl-x'
        )
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        editmenu = Menu(menubar, tearoff=0)
        editmenu.add_command(
            label='Edit Grammar',
            underline=5,
            command=self.edit_grammar,
            accelerator='Ctrl-g',
        )
        editmenu.add_command(
            label='Edit Text',
            underline=5,
            command=self.edit_sentence,
            accelerator='Ctrl-t',
        )
        menubar.add_cascade(label='Edit', underline=0, menu=editmenu)

        rulemenu = Menu(menubar, tearoff=0)
        rulemenu.add_command(
            label='Step', underline=1, command=self.step, accelerator='Space'
        )
        rulemenu.add_separator()
        rulemenu.add_command(
            label='Shift', underline=0, command=self.shift, accelerator='Ctrl-s'
        )
        rulemenu.add_command(
            label='Reduce', underline=0, command=self.reduce, accelerator='Ctrl-r'
        )
        rulemenu.add_separator()
        rulemenu.add_command(
            label='Undo', underline=0, command=self.undo, accelerator='Ctrl-u'
        )
        menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)

        viewmenu = Menu(menubar, tearoff=0)
        viewmenu.add_checkbutton(
            label="Show Grammar",
            underline=0,
            variable=self._show_grammar,
            command=self._toggle_grammar,
        )
        viewmenu.add_separator()
        viewmenu.add_radiobutton(
            label='Tiny',
            variable=self._size,
            underline=0,
            value=10,
            command=self.resize,
        )
        viewmenu.add_radiobutton(
            label='Small',
            variable=self._size,
            underline=0,
            value=12,
            command=self.resize,
        )
        viewmenu.add_radiobutton(
            label='Medium',
            variable=self._size,
            underline=0,
            value=14,
            command=self.resize,
        )
        viewmenu.add_radiobutton(
            label='Large',
            variable=self._size,
            underline=0,
            value=18,
            command=self.resize,
        )
        viewmenu.add_radiobutton(
            label='Huge',
            variable=self._size,
            underline=0,
            value=24,
            command=self.resize,
        )
        menubar.add_cascade(label='View', underline=0, menu=viewmenu)

        animatemenu = Menu(menubar, tearoff=0)
        animatemenu.add_radiobutton(
            label="No Animation", underline=0, variable=self._animate, value=0
        )
        animatemenu.add_radiobutton(
            label="Slow Animation",
            underline=0,
            variable=self._animate,
            value=20,
            accelerator='-',
        )
        animatemenu.add_radiobutton(
            label="Normal Animation",
            underline=0,
            variable=self._animate,
            value=10,
            accelerator='=',
        )
        animatemenu.add_radiobutton(
            label="Fast Animation",
            underline=0,
            variable=self._animate,
            value=4,
            accelerator='+',
        )
        menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)

        helpmenu = Menu(menubar, tearoff=0)
        helpmenu.add_command(label='About', underline=0, command=self.about)
        helpmenu.add_command(
            label='Instructions', underline=0, command=self.help, accelerator='F1'
        )
        menubar.add_cascade(label='Help', underline=0, menu=helpmenu)

        parent.config(menu=menubar)

    def _init_feedback(self, parent):
        self._feedbackframe = feedbackframe = Frame(parent)
        feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
        self._lastoper_label = Label(
            feedbackframe, text='Last Operation:', font=self._font
        )
        self._lastoper_label.pack(side='left')
        lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
        lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
        self._lastoper1 = Label(
            lastoperframe, foreground='#007070', background='#f0f0f0', font=self._font
        )
        self._lastoper2 = Label(
            lastoperframe,
            anchor='w',
            width=30,
            foreground='#004040',
            background='#f0f0f0',
            font=self._font,
        )
        self._lastoper1.pack(side='left')
        self._lastoper2.pack(side='left', fill='x', expand=1)

    def _init_canvas(self, parent):
        self._cframe = CanvasFrame(
            parent,
            background='white',
            width=525,
            closeenough=10,
            border=2,
            relief='sunken',
        )
        self._cframe.pack(expand=1, fill='both', side='top', pady=2)
        canvas = self._canvas = self._cframe.canvas()

        self._stackwidgets = []
        self._rtextwidgets = []
        self._titlebar = canvas.create_rectangle(
            0, 0, 0, 0, fill='#c0f0f0', outline='black'
        )
        self._exprline = canvas.create_line(0, 0, 0, 0, dash='.')
        self._stacktop = canvas.create_line(0, 0, 0, 0, fill='#408080')
        size = self._size.get() + 4
        self._stacklabel = TextWidget(
            canvas, 'Stack', color='#004040', font=self._boldfont
        )
        self._rtextlabel = TextWidget(
            canvas, 'Remaining Text', color='#004040', font=self._boldfont
        )
        self._cframe.add_widget(self._stacklabel)
        self._cframe.add_widget(self._rtextlabel)

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        scrollregion = self._canvas['scrollregion'].split()
        (cx1, cy1, cx2, cy2) = [int(c) for c in scrollregion]

        # Delete the old stack & rtext widgets.
        for stackwidget in self._stackwidgets:
            self._cframe.destroy_widget(stackwidget)
        self._stackwidgets = []
        for rtextwidget in self._rtextwidgets:
            self._cframe.destroy_widget(rtextwidget)
        self._rtextwidgets = []

        # Position the titlebar & exprline
        (x1, y1, x2, y2) = self._stacklabel.bbox()
        y = y2 - y1 + 10
        self._canvas.coords(self._titlebar, -5000, 0, 5000, y - 4)
        self._canvas.coords(self._exprline, 0, y * 2 - 10, 5000, y * 2 - 10)

        # Position the titlebar labels..
        (x1, y1, x2, y2) = self._stacklabel.bbox()
        self._stacklabel.move(5 - x1, 3 - y1)
        (x1, y1, x2, y2) = self._rtextlabel.bbox()
        self._rtextlabel.move(cx2 - x2 - 5, 3 - y1)

        # Draw the stack.
        stackx = 5
        for tok in self._parser.stack():
            if isinstance(tok, Tree):
                attribs = {
                    'tree_color': '#4080a0',
                    'tree_width': 2,
                    'node_font': self._boldfont,
                    'node_color': '#006060',
                    'leaf_color': '#006060',
                    'leaf_font': self._font,
                }
                widget = tree_to_treesegment(self._canvas, tok, **attribs)
                widget.label()['color'] = '#000000'
            else:
                widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
            widget.bind_click(self._popup_reduce)
            self._stackwidgets.append(widget)
            self._cframe.add_widget(widget, stackx, y)
            stackx = widget.bbox()[2] + 10

        # Draw the remaining text.
        rtextwidth = 0
        for tok in self._parser.remaining_text():
            widget = TextWidget(self._canvas, tok, color='#000000', font=self._font)
            self._rtextwidgets.append(widget)
            self._cframe.add_widget(widget, rtextwidth, y)
            rtextwidth = widget.bbox()[2] + 4

        # Allow enough room to shift the next token (for animations)
        if len(self._rtextwidgets) > 0:
            stackx += self._rtextwidgets[0].width()

        # Move the remaining text to the correct location (keep it
        # right-justified, when possible); and move the remaining text
        # label, if necessary.
        stackx = max(stackx, self._stacklabel.width() + 25)
        rlabelwidth = self._rtextlabel.width() + 10
        if stackx >= cx2 - max(rtextwidth, rlabelwidth):
            cx2 = stackx + max(rtextwidth, rlabelwidth)
        for rtextwidget in self._rtextwidgets:
            rtextwidget.move(4 + cx2 - rtextwidth, 0)
        self._rtextlabel.move(cx2 - self._rtextlabel.bbox()[2] - 5, 0)

        midx = (stackx + cx2 - max(rtextwidth, rlabelwidth)) / 2
        self._canvas.coords(self._stacktop, midx, 0, midx, 5000)
        (x1, y1, x2, y2) = self._stacklabel.bbox()

        # Set up binding to allow them to shift a token by dragging it.
        if len(self._rtextwidgets) > 0:

            def drag_shift(widget, midx=midx, self=self):
                if widget.bbox()[0] < midx:
                    self.shift()
                else:
                    self._redraw()

            self._rtextwidgets[0].bind_drag(drag_shift)
            self._rtextwidgets[0].bind_click(self.shift)

        # Draw the stack top.
        self._highlight_productions()

    def _draw_stack_top(self, widget):
        # hack..
        midx = widget.bbox()[2] + 50
        self._canvas.coords(self._stacktop, midx, 0, midx, 5000)

    def _highlight_productions(self):
        # Highlight the productions that can be reduced.
        self._prodlist.selection_clear(0, 'end')
        for prod in self._parser.reducible_productions():
            index = self._productions.index(prod)
            self._prodlist.selection_set(index)

    #########################################
    ##  Button Callbacks
    #########################################

    def destroy(self, *e):
        if self._top is None:
            return
        self._top.destroy()
        self._top = None

    def reset(self, *e):
        self._parser.initialize(self._sent)
        self._lastoper1['text'] = 'Reset App'
        self._lastoper2['text'] = ''
        self._redraw()

    def step(self, *e):
        if self.reduce():
            return True
        elif self.shift():
            return True
        else:
            if list(self._parser.parses()):
                self._lastoper1['text'] = 'Finished:'
                self._lastoper2['text'] = 'Success'
            else:
                self._lastoper1['text'] = 'Finished:'
                self._lastoper2['text'] = 'Failure'

    def shift(self, *e):
        if self._animating_lock:
            return
        if self._parser.shift():
            tok = self._parser.stack()[-1]
            self._lastoper1['text'] = 'Shift:'
            self._lastoper2['text'] = '%r' % tok
            if self._animate.get():
                self._animate_shift()
            else:
                self._redraw()
            return True
        return False

    def reduce(self, *e):
        if self._animating_lock:
            return
        production = self._parser.reduce()
        if production:
            self._lastoper1['text'] = 'Reduce:'
            self._lastoper2['text'] = '%s' % production
            if self._animate.get():
                self._animate_reduce()
            else:
                self._redraw()
        return production

    def undo(self, *e):
        if self._animating_lock:
            return
        if self._parser.undo():
            self._redraw()

    def postscript(self, *e):
        self._cframe.print_to_file()

    def mainloop(self, *args, **kwargs):
        """
        Enter the Tkinter mainloop.  This function must be called if
        this demo is created from a non-interactive program (e.g.
        from a secript); otherwise, the demo will close as soon as
        the script completes.
        """
        if in_idle():
            return
        self._top.mainloop(*args, **kwargs)

    #########################################
    ##  Menubar callbacks
    #########################################

    def resize(self, size=None):
        if size is not None:
            self._size.set(size)
        size = self._size.get()
        self._font.configure(size=-(abs(size)))
        self._boldfont.configure(size=-(abs(size)))
        self._sysfont.configure(size=-(abs(size)))

        # self._stacklabel['font'] = ('helvetica', -size-4, 'bold')
        # self._rtextlabel['font'] = ('helvetica', -size-4, 'bold')
        # self._lastoper_label['font'] = ('helvetica', -size)
        # self._lastoper1['font'] = ('helvetica', -size)
        # self._lastoper2['font'] = ('helvetica', -size)
        # self._prodlist['font'] = ('helvetica', -size)
        # self._prodlist_label['font'] = ('helvetica', -size-2, 'bold')
        self._redraw()

    def help(self, *e):
        # The default font's not very legible; try using 'fixed' instead.
        try:
            ShowText(
                self._top,
                'Help: Shift-Reduce Parser Application',
                (__doc__ or '').strip(),
                width=75,
                font='fixed',
            )
        except:
            ShowText(
                self._top,
                'Help: Shift-Reduce Parser Application',
                (__doc__ or '').strip(),
                width=75,
            )

    def about(self, *e):
        ABOUT = "NLTK Shift-Reduce Parser Application\n" + "Written by Edward Loper"
        TITLE = 'About: Shift-Reduce Parser Application'
        try:
            from six.moves.tkinter_messagebox import Message

            Message(message=ABOUT, title=TITLE).show()
        except:
            ShowText(self._top, TITLE, ABOUT)

    def edit_grammar(self, *e):
        CFGEditor(self._top, self._parser.grammar(), self.set_grammar)

    def set_grammar(self, grammar):
        self._parser.set_grammar(grammar)
        self._productions = list(grammar.productions())
        self._prodlist.delete(0, 'end')
        for production in self._productions:
            self._prodlist.insert('end', (' %s' % production))

    def edit_sentence(self, *e):
        sentence = " ".join(self._sent)
        title = 'Edit Text'
        instr = 'Enter a new sentence to parse.'
        EntryDialog(self._top, sentence, instr, self.set_sentence, title)

    def set_sentence(self, sent):
        self._sent = sent.split()  # [XX] use tagged?
        self.reset()

    #########################################
    ##  Reduce Production Selection
    #########################################

    def _toggle_grammar(self, *e):
        if self._show_grammar.get():
            self._prodframe.pack(
                fill='both', side='left', padx=2, after=self._feedbackframe
            )
            self._lastoper1['text'] = 'Show Grammar'
        else:
            self._prodframe.pack_forget()
            self._lastoper1['text'] = 'Hide Grammar'
        self._lastoper2['text'] = ''

    def _prodlist_select(self, event):
        selection = self._prodlist.curselection()
        if len(selection) != 1:
            return
        index = int(selection[0])
        production = self._parser.reduce(self._productions[index])
        if production:
            self._lastoper1['text'] = 'Reduce:'
            self._lastoper2['text'] = '%s' % production
            if self._animate.get():
                self._animate_reduce()
            else:
                self._redraw()
        else:
            # Reset the production selections.
            self._prodlist.selection_clear(0, 'end')
            for prod in self._parser.reducible_productions():
                index = self._productions.index(prod)
                self._prodlist.selection_set(index)

    def _popup_reduce(self, widget):
        # Remove old commands.
        productions = self._parser.reducible_productions()
        if len(productions) == 0:
            return

        self._reduce_menu.delete(0, 'end')
        for production in productions:
            self._reduce_menu.add_command(label=str(production), command=self.reduce)
        self._reduce_menu.post(
            self._canvas.winfo_pointerx(), self._canvas.winfo_pointery()
        )

    #########################################
    ##  Animations
    #########################################

    def _animate_shift(self):
        # What widget are we shifting?
        widget = self._rtextwidgets[0]

        # Where are we shifting from & to?
        right = widget.bbox()[0]
        if len(self._stackwidgets) == 0:
            left = 5
        else:
            left = self._stackwidgets[-1].bbox()[2] + 10

        # Start animating.
        dt = self._animate.get()
        dx = (left - right) * 1.0 / dt
        self._animate_shift_frame(dt, widget, dx)

    def _animate_shift_frame(self, frame, widget, dx):
        if frame > 0:
            self._animating_lock = 1
            widget.move(dx, 0)
            self._top.after(10, self._animate_shift_frame, frame - 1, widget, dx)
        else:
            # but: stacktop??

            # Shift the widget to the stack.
            del self._rtextwidgets[0]
            self._stackwidgets.append(widget)
            self._animating_lock = 0

            # Display the available productions.
            self._draw_stack_top(widget)
            self._highlight_productions()

    def _animate_reduce(self):
        # What widgets are we shifting?
        numwidgets = len(self._parser.stack()[-1])  # number of children
        widgets = self._stackwidgets[-numwidgets:]

        # How far are we moving?
        if isinstance(widgets[0], TreeSegmentWidget):
            ydist = 15 + widgets[0].label().height()
        else:
            ydist = 15 + widgets[0].height()

        # Start animating.
        dt = self._animate.get()
        dy = ydist * 2.0 / dt
        self._animate_reduce_frame(dt / 2, widgets, dy)

    def _animate_reduce_frame(self, frame, widgets, dy):
        if frame > 0:
            self._animating_lock = 1
            for widget in widgets:
                widget.move(0, dy)
            self._top.after(10, self._animate_reduce_frame, frame - 1, widgets, dy)
        else:
            del self._stackwidgets[-len(widgets) :]
            for widget in widgets:
                self._cframe.remove_widget(widget)
            tok = self._parser.stack()[-1]
            if not isinstance(tok, Tree):
                raise ValueError()
            label = TextWidget(
                self._canvas, str(tok.label()), color='#006060', font=self._boldfont
            )
            widget = TreeSegmentWidget(self._canvas, label, widgets, width=2)
            (x1, y1, x2, y2) = self._stacklabel.bbox()
            y = y2 - y1 + 10
            if not self._stackwidgets:
                x = 5
            else:
                x = self._stackwidgets[-1].bbox()[2] + 10
            self._cframe.add_widget(widget, x, y)
            self._stackwidgets.append(widget)

            # Display the available productions.
            self._draw_stack_top(widget)
            self._highlight_productions()

            #             # Delete the old widgets..
            #             del self._stackwidgets[-len(widgets):]
            #             for widget in widgets:
            #                 self._cframe.destroy_widget(widget)
            #
            #             # Make a new one.
            #             tok = self._parser.stack()[-1]
            #             if isinstance(tok, Tree):
            #                 attribs = {'tree_color': '#4080a0', 'tree_width': 2,
            #                            'node_font': bold, 'node_color': '#006060',
            #                            'leaf_color': '#006060', 'leaf_font':self._font}
            #                 widget = tree_to_treesegment(self._canvas, tok.type(),
            #                                              **attribs)
            #                 widget.node()['color'] = '#000000'
            #             else:
            #                 widget = TextWidget(self._canvas, tok.type(),
            #                                     color='#000000', font=self._font)
            #             widget.bind_click(self._popup_reduce)
            #             (x1, y1, x2, y2) = self._stacklabel.bbox()
            #             y = y2-y1+10
            #             if not self._stackwidgets: x = 5
            #             else: x = self._stackwidgets[-1].bbox()[2] + 10
            #             self._cframe.add_widget(widget, x, y)
            #             self._stackwidgets.append(widget)

            # self._redraw()
            self._animating_lock = 0

    #########################################
    ##  Hovering.
    #########################################

    def _highlight_hover(self, event):
        # What production are we hovering over?
        index = self._prodlist.nearest(event.y)
        if self._hover == index:
            return

        # Clear any previous hover highlighting.
        self._clear_hover()

        # If the production corresponds to an available reduction,
        # highlight the stack.
        selection = [int(s) for s in self._prodlist.curselection()]
        if index in selection:
            rhslen = len(self._productions[index].rhs())
            for stackwidget in self._stackwidgets[-rhslen:]:
                if isinstance(stackwidget, TreeSegmentWidget):
                    stackwidget.label()['color'] = '#00a000'
                else:
                    stackwidget['color'] = '#00a000'

        # Remember what production we're hovering over.
        self._hover = index

    def _clear_hover(self, *event):
        # Clear any previous hover highlighting.
        if self._hover == -1:
            return
        self._hover = -1
        for stackwidget in self._stackwidgets:
            if isinstance(stackwidget, TreeSegmentWidget):
                stackwidget.label()['color'] = 'black'
            else:
                stackwidget['color'] = 'black'
예제 #40
0
    def __create_content(self):
        self.__rootFrame = TKTk()
        self.__rootFrame.withdraw()

        self.__top = TKToplevel(self.__rootFrame)
        self.__top.title("Login")
        self.__top.protocol("WM_DELETE_WINDOW", self.__rootFrame.destroy)

        self.__top.bind('<Return>', self.__enter_action)

        self.__top.update_idletasks()
        width = self.__top.winfo_width()
        height = self.__top.winfo_height()
        x = (self.__top.winfo_screenwidth() // 2) - (width // 2)
        y = (self.__top.winfo_screenheight() // 2) - (height // 2)

        self.__top.geometry("+%d+%d" % (x, y))

        row = 0
        expLabel = TKLabel(self.__top, text='Login to host:')
        expLabel.grid(row=row, column=0, columnspan=4, padx=5, pady=2)

        row = row+1
        urlLabel = TKLabel(self.__top, text=self.__host)
        urlLabel.grid(row=row, column=0, columnspan=4, padx=5, pady=2)

        row = row+1
        usrLabel = TKLabel(self.__top, text='User')
        usrLabel.grid(row=row, column=0, columnspan=2, padx=20, pady=5)
        self.__usrEntry = TKEntry(self.__top, width=20)
        self.__usrEntry.grid(row=row, column=2, columnspan=2, padx=5, pady=5)

        row = row+1
        pwdLabel = TKLabel(self.__top, text='Password')
        pwdLabel.grid(row=row, column=0, columnspan=2, padx=20, pady=5)
        self.__pwdEntry = TKEntry(self.__top, width=20, show="*")
        self.__pwdEntry.grid(row=row, column=2, columnspan=2, padx=5, pady=5)

        row = row+1
        cancelButton = TKButton(self.__top, text='Cancel', command=self.__cancel_action)
        cancelButton.grid(row=row, column=1, padx=5, pady=5)
        loginButton = TKButton(self.__top, text='Login', command=self.__login_action)
        loginButton.grid(row=row, column=2, padx=5, pady=5)
예제 #41
0
class Game(Frame):
    '''Top-level Frame managing top-level events. Interact directly with user.'''

    ############ geometry ###############
    X_PADDING = 25
    Y_PADDING = 25
    SHIP_PANEL_WIDTH = 150
    BUTTON_PANEL_HEIGHT = 50
    BUTTON_PADDING = 5
    WARNING_BAR_HEIGHT = 40
    #####################################

    ########### states ##################
    PLACING = 0
    PLAYING = 1
    GAME_OVER = 2
    #####################################    

    ############ colors #################
    BACKGROUND_COLOR = "white"
    WARNING_BACKGROUND = "khaki1"
    #####################################

    ###### window titles and messages ################
    GAME_OVER_POPUP_TITLE = "Game Over"
    GAME_OVER_WIN_MSG = "You win!"
    GAME_OVER_LOSE_MSG = "Game over. You lose."
    WINDOW_TITLE_GAME_OVER = "Battleship (Game Over)"
    WINDOW_TITLE_NORMAL = "Battleship"
    ##################################################

    def __init__(self, master):
        '''Create the UI for a game of battleship.'''
    
        Frame.__init__(self, master)
        
        self._create_ui()
        
        # these are 'controller' elements that should really be in another class
        self.ai = ShipAI(self.their_grid._model, self.my_grid._model)
        self.reset()
        
    def show_warning(self, msg, title=None):
        '''Show a warning msg that a certain action is illegal.
        Allows user to understand what's going on (i.e. why their action failed.
        '''
        
        tkMessageBox.showwarning(title, msg)
        
    def _create_ui(self):
        '''Create all UI elements for the game.'''
        
        self._create_menu()
        self._add_grids()
        self._add_staging_panel()
        self._addship_panels()
        self._make_buttons()
        
        self.config(height=self.Y_PADDING * 3 + self.my_grid.size + self.BUTTON_PANEL_HEIGHT + self.WARNING_BAR_HEIGHT)
        self.set_all_bgs(self.BACKGROUND_COLOR, self)
        
    def _destroy_popup(self, event=None):
        '''Process removal of the popup.'''
    
        self.master.focus_set()
        self._popup.grab_release()
        self._popup.destroy()
        
    def _show_rules(self):
        '''Show the help dialog in a new window.'''
        
        # load the help page
        help_page_location = "help/rules.txt"
        f = open(help_page_location, "r")
        lines = f.read()
        f.close()
        tkMessageBox.showinfo("Rules", lines)
        
    def show_keyboard_shortcuts(self):
        '''Show a dialog box with the keyboard shortcuts.'''
        
        # load the keyboard shortcuts page
        ks_page_location = "help/keyboard_shortcuts.txt"
        f = open(ks_page_location, "r")
        lines = f.read()
        f.close()
        tkMessageBox.showinfo("Keyboard Shortcuts", lines)
        
    def _create_menu(self):
        '''Create the menu in the GUI.'''
    
        menubar = Menu(self)
        self.menus = {}
        
        count = 0
        self.file_menu = Menu(menubar, tearoff=0)
        self.file_menu.add_command(label="New Game")#, command=self.reset)
        self.menus["file_new_game"] = count
        count += 1
        self.file_menu.add_command(label="Save")
        self.menus["file_save"] = count
        count += 1
        self.file_menu.add_command(label="Open")
        self.menus["file_open"] = count
        count += 1
        self.file_menu.add_command(label="Exit")#, command=self.master.destroy)
        self.menus["file_exit"] = count
        count += 1
        menubar.add_cascade(label="File", menu=self.file_menu)
        
        if battleship.GameController.DEV_FLAG:
            count = 0
            self.dev_menu = Menu(menubar, tearoff=0)
            self.dev_menu.add_command(label="Auto Place")
            self.menus["dev_auto_place"] = count
            count += 1
            self.dev_menu.add_command(label="Random Shot")
            self.menus["dev_random_shot"] = count
            count += 1
            self.dev_menu.add_command(label="Auto Load")
            self.menus["dev_auto_load"] = count
            count += 1
            menubar.add_cascade(label="Dev", menu=self.dev_menu)
        
        help_menu = Menu(menubar, tearoff=0)
        help_menu.add_command(label="Rules", command=self._show_rules)
        help_menu.add_command(label="Keyboard Shortcuts", command=self.show_keyboard_shortcuts)
        menubar.add_cascade(label="Help", menu=help_menu)
        
        self.master.config(menu=menubar)

    def _add_staging_panel(self):
        '''Create the placement/ship staging panel.'''
    
        self.my_grid_frame.staging_panel = ShipPlacementPanel(self)
        self.my_grid_frame.staging_panel.place(
            x=self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH + self.my_grid.size,
            y=self.Y_PADDING
        )
            
    def set_all_bgs(self, color, parent):
        '''Set all the backgrounds of the child widgets to a certain color.'''
    
        parent.config(background=color)
    
        for child in parent.winfo_children():
            self.set_all_bgs(color, child)
        
    def _addship_panels(self):
        '''Add a list of ships to select from, for adding.
        Note that staging area must be added FIRST'''
        
        ############################## ShipPanel ########################
        self.my_grid_frame.ship_panel = ShipPanel(self)
        self.my_grid_frame.ship_panel.place(x=self.X_PADDING, y=self.Y_PADDING * 4)
        
        self.unselect_ship()
        ##################################################################
        
        ###################### ShipWarPanel ##############################
        self.my_grid_frame._ship_war_panel = ShipWarPanel(self)
        self.my_grid_frame._ship_war_panel.config(height=self.my_grid_frame.winfo_height())
        self.my_grid_frame._ship_war_panel.place(x=self.X_PADDING, y=self.Y_PADDING * 2)
        ##################################################################
        
        ###################### EnemyShipPanel ############################
        self.their_grid_frame.ship_panel = EnemyShipPanel(self)
        self.their_grid_frame.ship_panel.place(x=self.my_grid.size * 2 + self.X_PADDING * 3 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING * 4)
        ##################################################################
            
    def unselect_ship(self):
        '''Deselect all ships in the placement and staging GUIs.'''
    
        self.my_grid_frame.ship_panel._ship_var.set(10)
        self.my_grid_frame.staging_panel.reset()
        
    def _hide_frame(self, frame):
        '''Since you can't hide a frame per se, 'unpack' the frame's child widgets.
        WARNING: this removes all packing directions for children'''

        frame.lower()
        
        for child in frame.winfo_children():
            child.pack_forget()
            
    def show_game_over_popup(self, winner):
        '''Show a popup with a dialog saying the game is over, and showing the winning player.'''
        
        msg = {
            battleship.GameController. HUMAN_PLAYER : self.GAME_OVER_WIN_MSG,
            battleship.GameController.AI_PLAYER : self.GAME_OVER_LOSE_MSG
        } [winner]
            
        tkMessageBox.showinfo(self.GAME_OVER_POPUP_TITLE, msg)
        
    def process_placing_state(self):
        '''Basic stuff to do during placing state.'''
        
        self.config(width=self.X_PADDING * 3 + self.my_grid.size + self.SHIP_PANEL_WIDTH + self.my_grid_frame.staging_panel.CANVAS_WIDTH)
        
        # show staging panel
        self.my_grid_frame.staging_panel.pack_ui()
        self.my_grid_frame.staging_panel.lift(aboveThis=self.their_grid_frame)
        self.my_grid_frame.staging_panel.reset()
    
        #re-pack
        self.play_game_button.pack(side=LEFT, padx=self.BUTTON_PADDING, pady=self.BUTTON_PADDING)
        self.play_game_button.config(state=DISABLED)
        self._hide_frame(self.their_grid_frame)
        
        self._hide_frame(self.my_grid_frame._ship_war_panel)
        self.my_grid_frame.ship_panel.lift(aboveThis=self.my_grid_frame._ship_war_panel)
        
        # allow the AI to place ships
        self.ai.place_ships()
        
    def process_playing_state(self):
        '''Basic stuff to do during playing state.'''
        
        self.config(width=self.X_PADDING * 4 + self.my_grid.size * 2 + self.SHIP_PANEL_WIDTH * 2)
        self.my_grid._model.finalize()
        self.their_grid._model.finalize()
        self._hide_frame(self.my_grid_frame.staging_panel)
        
        self.their_grid.config(state=NORMAL)
        self.their_grid.enable()
        
        # hide while playing
        self.play_game_button.pack_forget()
        
        self.unselect_ship()
        
        self.my_grid_frame._ship_war_panel.pack_ui()
        self.my_grid_frame._ship_war_panel.lift(aboveThis=self.my_grid_frame.ship_panel)
        
        # show opponent's grid
        self.their_grid_frame.lift(aboveThis=self.my_grid_frame.staging_panel)
        self.their_grid_label.pack()
        self.their_grid.pack(side=LEFT, pady=20)
        
    def process_game_over_state(self):
        '''Change the view to reflect the game is over.'''
        
        self.their_grid.disable()
        self.master.title(self.WINDOW_TITLE_GAME_OVER)
        
    def process_state(self):
        '''Simple state controller to enable and disable certain widgets depending on the state.'''
    
        if self._state == self.PLACING:
            self.process_placing_state()
        elif self._state == self.PLAYING:
            self.process_playing_state()
        elif self._state == self.GAME_OVER:
            self.process_game_over_state()
                
    def _add_grid_events(self):
        '''Add events to the grids.'''
        
        #self.their_grid.tag_bind("tile", "<Button-1>", self._shot)
        pass
            
    def _add_grids(self):
        '''Create UI containers for the player grids.'''
    
        self.my_grid_frame = PlayerGridFrame(self)
        self.my_grid_frame.place(x=self.X_PADDING + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
        l1 = Label(self.my_grid_frame, text="Your Grid")
        l1.pack()
        self.my_grid = ShipGrid(self.my_grid_frame, True)
        self.my_grid.pack(side=LEFT, pady=20)
        
        self.their_grid_frame = PlayerGridFrame(self)
        self.their_grid_frame.place(x=self.my_grid.size + self.X_PADDING * 2 + self.SHIP_PANEL_WIDTH, y=self.Y_PADDING)
        self.their_grid_label = Label(self.their_grid_frame, text="Opponent's Grid")
        self.their_grid_label.pack()
        self.their_grid = ShipGrid(self.their_grid_frame, False)
        self.their_grid.pack(side=LEFT, pady=20)
        
        self._add_grid_events()
        
    def reset(self):
        '''New game!'''
        
        self.master.title(self.WINDOW_TITLE_NORMAL)
        
        # reset selected ship
        self.unselect_ship()
        
        # reset staging area
        self.my_grid_frame.staging_panel.reset()
        
        # reset indicators on ships in panels
        self.my_grid_frame._ship_war_panel.reset()
        for ship, button in self.my_grid_frame.ship_panel.ship_buttons.items():
            button.config(foreground="black")
        
        for x, y in self.my_grid.get_tiles():
            self.reset_closure(x, y)
            
        self._state = self.PLACING
        self.process_state()
            
    def reset_closure(self, x, y):
        '''Add a placement event to the given tile.
        TODO this is badly named'''
    
        tag_id = self.my_grid._get_tile_name(x, y)
        c = self.get_add_ship_callback()
        f = lambda event: self.add_staged_ship(x, y, c)
        self.my_grid.tag_bind(tag_id, "<Button-1>", f)
        
    def add_staged_ship(self, x, y, callback):
        '''Take the stage from the staging area, and place it on the board at position (x, y).
        After ship has been placed, execute the function <callback>.'''
    
        s = self.my_grid_frame.staging_panel.get_staged_ship()
        
        if s is not None:
            self.my_grid.add_ship(x, y, s.get_short_name(), s.is_vertical(), callback)
        
    def get_add_ship_callback(self):
        '''Return the callback function for adding a ship.'''
    
        return lambda: self.ship_set(self.my_grid_frame.ship_panel.get_current_ship())
        
    def _set_ship_sunk(self, ship):
        '''This is a callback, to be called when a ship has been sunk.
        TODO for now only called when one of MY ships is sunk.
        UI shows that the given ship has been sunk.'''
        
        self.my_grid_frame.ship_panel.set_sunk(ship)
        
    def _set_ship_hit(self, ship):
        '''This is a callback, to be called when a ship has been hit.
        TODO for now only called when one of MY ships is hit.
        UI shows that the given ship has been hit.'''
        
        assert ship is not None
        self.my_grid_frame._ship_war_panel.update(ship)
        
    def ship_set(self, ship):
        '''This is a callback, to be called when a ship has been placed.
        UI shows that the given ship has been placed.'''
    
        self._set_ships[ship] = True
        self.my_grid_frame.ship_panel.set_placed(ship)
        
        if all(self._set_ships.values()):
            self.play_game_button.config(state=NORMAL)
        
    def _make_buttons(self):
        '''Create action buttons at the bottom.'''
    
        button_row = self.my_grid.size + self.Y_PADDING + (self.BUTTON_PANEL_HEIGHT - 2 * self.BUTTON_PADDING)
        button_frame = Frame(self)
        button_frame.place(x=self.my_grid.size - self.X_PADDING, y=button_row)
        
        self.play_game_button = Button(button_frame, text="Play")
        self.play_game_button.pack(side=LEFT, padx=self.BUTTON_PADDING, pady=self.BUTTON_PADDING)
        
    def redraw(self):
        '''Redraw the GUI, reloading all info from the model.
        TODO this is a work-in-progress'''
        
        # first, figure out the state
        # are the ships placed? are they sunk?
        grids = [self.my_grid._model, self.their_grid._model]
        
        # set panels to the correct state
        self.my_grid_frame.ship_panel.redraw(grids[0])
        self.my_grid_frame._ship_war_panel.redraw(grids[0])
        self.their_grid_frame.ship_panel.redraw(grids[1])
        
        # set the grid to the correct state
        self.my_grid.redraw(grids[0])
        self.their_grid.redraw(grids[1])
        
        if all([g.has_all_ships() for g in grids]) and all([g.all_sunk() for g in grids]):
            #TODO
            # state is game over.
            pass
        elif all([g.has_all_ships() for g in grids]):
            self.process_playing_state()
        else:
            #TODO
            # state is placing
            pass
class RecursiveDescentApp(object):
    """
    A graphical tool for exploring the recursive descent parser.  The tool
    displays the parser's tree and the remaining text, and allows the
    user to control the parser's operation.  In particular, the user
    can expand subtrees on the frontier, match tokens on the frontier
    against the text, and backtrack.  A "step" button simply steps
    through the parsing process, performing the operations that
    ``RecursiveDescentParser`` would use.
    """
    def __init__(self, grammar, sent, trace=0):
        self._sent = sent
        self._parser = SteppingRecursiveDescentParser(grammar, trace)

        # Set up the main window.
        self._top = Tk()
        self._top.title('Recursive Descent Parser Application')

        # Set up key bindings.
        self._init_bindings()

        # Initialize the fonts.
        self._init_fonts(self._top)

        # Animations.  animating_lock is a lock to prevent the demo
        # from performing new operations while it's animating.
        self._animation_frames = IntVar(self._top)
        self._animation_frames.set(5)
        self._animating_lock = 0
        self._autostep = 0

        # The user can hide the grammar.
        self._show_grammar = IntVar(self._top)
        self._show_grammar.set(1)

        # Create the basic frames.
        self._init_menubar(self._top)
        self._init_buttons(self._top)
        self._init_feedback(self._top)
        self._init_grammar(self._top)
        self._init_canvas(self._top)

        # Initialize the parser.
        self._parser.initialize(self._sent)

        # Resize callback
        self._canvas.bind('<Configure>', self._configure)

    #########################################
    ##  Initialization Helpers
    #########################################

    def _init_fonts(self, root):
        # See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
        self._sysfont = Font(font=Button()["font"])
        root.option_add("*Font", self._sysfont)

        # TWhat's our font size (default=same as sysfont)
        self._size = IntVar(root)
        self._size.set(self._sysfont.cget('size'))

        self._boldfont = Font(family='helvetica', weight='bold',
                                    size=self._size.get())
        self._font = Font(family='helvetica',
                                    size=self._size.get())
        if self._size.get() < 0: big = self._size.get()-2
        else: big = self._size.get()+2
        self._bigfont = Font(family='helvetica', weight='bold',
                                    size=big)

    def _init_grammar(self, parent):
        # Grammar view.
        self._prodframe = listframe = Frame(parent)
        self._prodframe.pack(fill='both', side='left', padx=2)
        self._prodlist_label = Label(self._prodframe, font=self._boldfont,
                                     text='Available Expansions')
        self._prodlist_label.pack()
        self._prodlist = Listbox(self._prodframe, selectmode='single',
                                 relief='groove', background='white',
                                 foreground='#909090', font=self._font,
                                 selectforeground='#004040',
                                 selectbackground='#c0f0c0')

        self._prodlist.pack(side='right', fill='both', expand=1)

        self._productions = list(self._parser.grammar().productions())
        for production in self._productions:
            self._prodlist.insert('end', ('  %s' % production))
        self._prodlist.config(height=min(len(self._productions), 25))

        # Add a scrollbar if there are more than 25 productions.
        if len(self._productions) > 25:
            listscroll = Scrollbar(self._prodframe,
                                   orient='vertical')
            self._prodlist.config(yscrollcommand = listscroll.set)
            listscroll.config(command=self._prodlist.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a production, apply it.
        self._prodlist.bind('<<ListboxSelect>>', self._prodlist_select)

    def _init_bindings(self):
        # Key bindings are a good thing.
        self._top.bind('<Control-q>', self.destroy)
        self._top.bind('<Control-x>', self.destroy)
        self._top.bind('<Escape>', self.destroy)
        self._top.bind('e', self.expand)
        #self._top.bind('<Alt-e>', self.expand)
        #self._top.bind('<Control-e>', self.expand)
        self._top.bind('m', self.match)
        self._top.bind('<Alt-m>', self.match)
        self._top.bind('<Control-m>', self.match)
        self._top.bind('b', self.backtrack)
        self._top.bind('<Alt-b>', self.backtrack)
        self._top.bind('<Control-b>', self.backtrack)
        self._top.bind('<Control-z>', self.backtrack)
        self._top.bind('<BackSpace>', self.backtrack)
        self._top.bind('a', self.autostep)
        #self._top.bind('<Control-a>', self.autostep)
        self._top.bind('<Control-space>', self.autostep)
        self._top.bind('<Control-c>', self.cancel_autostep)
        self._top.bind('<space>', self.step)
        self._top.bind('<Delete>', self.reset)
        self._top.bind('<Control-p>', self.postscript)
        #self._top.bind('<h>', self.help)
        #self._top.bind('<Alt-h>', self.help)
        self._top.bind('<Control-h>', self.help)
        self._top.bind('<F1>', self.help)
        #self._top.bind('<g>', self.toggle_grammar)
        #self._top.bind('<Alt-g>', self.toggle_grammar)
        #self._top.bind('<Control-g>', self.toggle_grammar)
        self._top.bind('<Control-g>', self.edit_grammar)
        self._top.bind('<Control-t>', self.edit_sentence)

    def _init_buttons(self, parent):
        # Set up the frames.
        self._buttonframe = buttonframe = Frame(parent)
        buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
        Button(buttonframe, text='Step',
               background='#90c0d0', foreground='black',
               command=self.step,).pack(side='left')
        Button(buttonframe, text='Autostep',
               background='#90c0d0', foreground='black',
               command=self.autostep,).pack(side='left')
        Button(buttonframe, text='Expand', underline=0,
               background='#90f090', foreground='black',
               command=self.expand).pack(side='left')
        Button(buttonframe, text='Match', underline=0,
               background='#90f090', foreground='black',
               command=self.match).pack(side='left')
        Button(buttonframe, text='Backtrack', underline=0,
               background='#f0a0a0', foreground='black',
               command=self.backtrack).pack(side='left')
        # Replace autostep...
#         self._autostep_button = Button(buttonframe, text='Autostep',
#                                        underline=0, command=self.autostep)
#         self._autostep_button.pack(side='left')

    def _configure(self, event):
        self._autostep = 0
        (x1, y1, x2, y2) = self._cframe.scrollregion()
        y2 = event.height - 6
        self._canvas['scrollregion'] = '%d %d %d %d' % (x1,y1,x2,y2)
        self._redraw()

    def _init_feedback(self, parent):
        self._feedbackframe = feedbackframe = Frame(parent)
        feedbackframe.pack(fill='x', side='bottom', padx=3, pady=3)
        self._lastoper_label = Label(feedbackframe, text='Last Operation:',
                                     font=self._font)
        self._lastoper_label.pack(side='left')
        lastoperframe = Frame(feedbackframe, relief='sunken', border=1)
        lastoperframe.pack(fill='x', side='right', expand=1, padx=5)
        self._lastoper1 = Label(lastoperframe, foreground='#007070',
                                background='#f0f0f0', font=self._font)
        self._lastoper2 = Label(lastoperframe, anchor='w', width=30,
                                foreground='#004040', background='#f0f0f0',
                                font=self._font)
        self._lastoper1.pack(side='left')
        self._lastoper2.pack(side='left', fill='x', expand=1)

    def _init_canvas(self, parent):
        self._cframe = CanvasFrame(parent, background='white',
                                   #width=525, height=250,
                                   closeenough=10,
                                   border=2, relief='sunken')
        self._cframe.pack(expand=1, fill='both', side='top', pady=2)
        canvas = self._canvas = self._cframe.canvas()

        # Initially, there's no tree or text
        self._tree = None
        self._textwidgets = []
        self._textline = None

    def _init_menubar(self, parent):
        menubar = Menu(parent)

        filemenu = Menu(menubar, tearoff=0)
        filemenu.add_command(label='Reset Parser', underline=0,
                             command=self.reset, accelerator='Del')
        filemenu.add_command(label='Print to Postscript', underline=0,
                             command=self.postscript, accelerator='Ctrl-p')
        filemenu.add_command(label='Exit', underline=1,
                             command=self.destroy, accelerator='Ctrl-x')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        editmenu = Menu(menubar, tearoff=0)
        editmenu.add_command(label='Edit Grammar', underline=5,
                             command=self.edit_grammar,
                             accelerator='Ctrl-g')
        editmenu.add_command(label='Edit Text', underline=5,
                             command=self.edit_sentence,
                             accelerator='Ctrl-t')
        menubar.add_cascade(label='Edit', underline=0, menu=editmenu)

        rulemenu = Menu(menubar, tearoff=0)
        rulemenu.add_command(label='Step', underline=1,
                             command=self.step, accelerator='Space')
        rulemenu.add_separator()
        rulemenu.add_command(label='Match', underline=0,
                             command=self.match, accelerator='Ctrl-m')
        rulemenu.add_command(label='Expand', underline=0,
                             command=self.expand, accelerator='Ctrl-e')
        rulemenu.add_separator()
        rulemenu.add_command(label='Backtrack', underline=0,
                             command=self.backtrack, accelerator='Ctrl-b')
        menubar.add_cascade(label='Apply', underline=0, menu=rulemenu)

        viewmenu = Menu(menubar, tearoff=0)
        viewmenu.add_checkbutton(label="Show Grammar", underline=0,
                                 variable=self._show_grammar,
                                 command=self._toggle_grammar)
        viewmenu.add_separator()
        viewmenu.add_radiobutton(label='Tiny', variable=self._size,
                                 underline=0, value=10, command=self.resize)
        viewmenu.add_radiobutton(label='Small', variable=self._size,
                                 underline=0, value=12, command=self.resize)
        viewmenu.add_radiobutton(label='Medium', variable=self._size,
                                 underline=0, value=14, command=self.resize)
        viewmenu.add_radiobutton(label='Large', variable=self._size,
                                 underline=0, value=18, command=self.resize)
        viewmenu.add_radiobutton(label='Huge', variable=self._size,
                                 underline=0, value=24, command=self.resize)
        menubar.add_cascade(label='View', underline=0, menu=viewmenu)

        animatemenu = Menu(menubar, tearoff=0)
        animatemenu.add_radiobutton(label="No Animation", underline=0,
                                    variable=self._animation_frames,
                                    value=0)
        animatemenu.add_radiobutton(label="Slow Animation", underline=0,
                                    variable=self._animation_frames,
                                    value=10, accelerator='-')
        animatemenu.add_radiobutton(label="Normal Animation", underline=0,
                                    variable=self._animation_frames,
                                    value=5, accelerator='=')
        animatemenu.add_radiobutton(label="Fast Animation", underline=0,
                                    variable=self._animation_frames,
                                    value=2, accelerator='+')
        menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)


        helpmenu = Menu(menubar, tearoff=0)
        helpmenu.add_command(label='About', underline=0,
                             command=self.about)
        helpmenu.add_command(label='Instructions', underline=0,
                             command=self.help, accelerator='F1')
        menubar.add_cascade(label='Help', underline=0, menu=helpmenu)

        parent.config(menu=menubar)

    #########################################
    ##  Helper
    #########################################

    def _get(self, widget, treeloc):
        for i in treeloc: widget = widget.subtrees()[i]
        if isinstance(widget, TreeSegmentWidget):
            widget = widget.label()
        return widget

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        canvas = self._canvas

        # Delete the old tree, widgets, etc.
        if self._tree is not None:
            self._cframe.destroy_widget(self._tree)
        for twidget in self._textwidgets:
            self._cframe.destroy_widget(twidget)
        if self._textline is not None:
            self._canvas.delete(self._textline)

        # Draw the tree.
        helv = ('helvetica', -self._size.get())
        bold = ('helvetica', -self._size.get(), 'bold')
        attribs = {'tree_color': '#000000', 'tree_width': 2,
                   'node_font': bold, 'leaf_font': helv,}
        tree = self._parser.tree()
        self._tree = tree_to_treesegment(canvas, tree, **attribs)
        self._cframe.add_widget(self._tree, 30, 5)

        # Draw the text.
        helv = ('helvetica', -self._size.get())
        bottom = y = self._cframe.scrollregion()[3]
        self._textwidgets = [TextWidget(canvas, word, font=self._font)
                             for word in self._sent]
        for twidget in self._textwidgets:
            self._cframe.add_widget(twidget, 0, 0)
            twidget.move(0, bottom-twidget.bbox()[3]-5)
            y = min(y, twidget.bbox()[1])

        # Draw a line over the text, to separate it from the tree.
        self._textline = canvas.create_line(-5000, y-5, 5000, y-5, dash='.')

        # Highlight appropriate nodes.
        self._highlight_nodes()
        self._highlight_prodlist()

        # Make sure the text lines up.
        self._position_text()


    def _redraw_quick(self):
        # This should be more-or-less sufficient after an animation.
        self._highlight_nodes()
        self._highlight_prodlist()
        self._position_text()

    def _highlight_nodes(self):
        # Highlight the list of nodes to be checked.
        bold = ('helvetica', -self._size.get(), 'bold')
        for treeloc in self._parser.frontier()[:1]:
            self._get(self._tree, treeloc)['color'] = '#20a050'
            self._get(self._tree, treeloc)['font'] = bold
        for treeloc in self._parser.frontier()[1:]:
            self._get(self._tree, treeloc)['color'] = '#008080'

    def _highlight_prodlist(self):
        # Highlight the productions that can be expanded.
        # Boy, too bad tkinter doesn't implement Listbox.itemconfig;
        # that would be pretty useful here.
        self._prodlist.delete(0, 'end')
        expandable = self._parser.expandable_productions()
        untried = self._parser.untried_expandable_productions()
        productions = self._productions
        for index in range(len(productions)):
            if productions[index] in expandable:
                if productions[index] in untried:
                    self._prodlist.insert(index, ' %s' % productions[index])
                else:
                    self._prodlist.insert(index, ' %s (TRIED)' %
                                          productions[index])
                self._prodlist.selection_set(index)
            else:
                self._prodlist.insert(index, ' %s' % productions[index])

    def _position_text(self):
        # Line up the text widgets that are matched against the tree
        numwords = len(self._sent)
        num_matched = numwords - len(self._parser.remaining_text())
        leaves = self._tree_leaves()[:num_matched]
        xmax = self._tree.bbox()[0]
        for i in range(0, len(leaves)):
            widget = self._textwidgets[i]
            leaf = leaves[i]
            widget['color'] = '#006040'
            leaf['color'] = '#006040'
            widget.move(leaf.bbox()[0] - widget.bbox()[0], 0)
            xmax = widget.bbox()[2] + 10

        # Line up the text widgets that are not matched against the tree.
        for i in range(len(leaves), numwords):
            widget = self._textwidgets[i]
            widget['color'] = '#a0a0a0'
            widget.move(xmax - widget.bbox()[0], 0)
            xmax = widget.bbox()[2] + 10

        # If we have a complete parse, make everything green :)
        if self._parser.currently_complete():
            for twidget in self._textwidgets:
                twidget['color'] = '#00a000'

        # Move the matched leaves down to the text.
        for i in range(0, len(leaves)):
            widget = self._textwidgets[i]
            leaf = leaves[i]
            dy = widget.bbox()[1] - leaf.bbox()[3] - 10.0
            dy = max(dy, leaf.parent().label().bbox()[3] - leaf.bbox()[3] + 10)
            leaf.move(0, dy)

    def _tree_leaves(self, tree=None):
        if tree is None: tree = self._tree
        if isinstance(tree, TreeSegmentWidget):
            leaves = []
            for child in tree.subtrees(): leaves += self._tree_leaves(child)
            return leaves
        else:
            return [tree]

    #########################################
    ##  Button Callbacks
    #########################################

    def destroy(self, *e):
        self._autostep = 0
        if self._top is None: return
        self._top.destroy()
        self._top = None

    def reset(self, *e):
        self._autostep = 0
        self._parser.initialize(self._sent)
        self._lastoper1['text'] = 'Reset Application'
        self._lastoper2['text'] = ''
        self._redraw()

    def autostep(self, *e):
        if self._animation_frames.get() == 0:
            self._animation_frames.set(2)
        if self._autostep:
            self._autostep = 0
        else:
            self._autostep = 1
            self._step()

    def cancel_autostep(self, *e):
        #self._autostep_button['text'] = 'Autostep'
        self._autostep = 0

    # Make sure to stop auto-stepping if we get any user input.
    def step(self, *e): self._autostep = 0; self._step()
    def match(self, *e): self._autostep = 0; self._match()
    def expand(self, *e): self._autostep = 0; self._expand()
    def backtrack(self, *e): self._autostep = 0; self._backtrack()

    def _step(self):
        if self._animating_lock: return

        # Try expanding, matching, and backtracking (in that order)
        if self._expand(): pass
        elif self._parser.untried_match() and self._match(): pass
        elif self._backtrack(): pass
        else:
            self._lastoper1['text'] = 'Finished'
            self._lastoper2['text'] = ''
            self._autostep = 0

        # Check if we just completed a parse.
        if self._parser.currently_complete():
            self._autostep = 0
            self._lastoper2['text'] += '    [COMPLETE PARSE]'

    def _expand(self, *e):
        if self._animating_lock: return
        old_frontier = self._parser.frontier()
        rv = self._parser.expand()
        if rv is not None:
            self._lastoper1['text'] = 'Expand:'
            self._lastoper2['text'] = rv
            self._prodlist.selection_clear(0, 'end')
            index = self._productions.index(rv)
            self._prodlist.selection_set(index)
            self._animate_expand(old_frontier[0])
            return True
        else:
            self._lastoper1['text'] = 'Expand:'
            self._lastoper2['text'] = '(all expansions tried)'
            return False

    def _match(self, *e):
        if self._animating_lock: return
        old_frontier = self._parser.frontier()
        rv = self._parser.match()
        if rv is not None:
            self._lastoper1['text'] = 'Match:'
            self._lastoper2['text'] = rv
            self._animate_match(old_frontier[0])
            return True
        else:
            self._lastoper1['text'] = 'Match:'
            self._lastoper2['text'] = '(failed)'
            return False

    def _backtrack(self, *e):
        if self._animating_lock: return
        if self._parser.backtrack():
            elt = self._parser.tree()
            for i in self._parser.frontier()[0]:
                elt = elt[i]
            self._lastoper1['text'] = 'Backtrack'
            self._lastoper2['text'] = ''
            if isinstance(elt, Tree):
                self._animate_backtrack(self._parser.frontier()[0])
            else:
                self._animate_match_backtrack(self._parser.frontier()[0])
            return True
        else:
            self._autostep = 0
            self._lastoper1['text'] = 'Finished'
            self._lastoper2['text'] = ''
            return False

    def about(self, *e):
        ABOUT = ("NLTK Recursive Descent Parser Application\n"+
                 "Written by Edward Loper")
        TITLE = 'About: Recursive Descent Parser Application'
        try:
            from six.moves.tkinter_messagebox import Message
            Message(message=ABOUT, title=TITLE).show()
        except:
            ShowText(self._top, TITLE, ABOUT)

    def help(self, *e):
        self._autostep = 0
        # The default font's not very legible; try using 'fixed' instead.
        try:
            ShowText(self._top, 'Help: Recursive Descent Parser Application',
                     (__doc__ or '').strip(), width=75, font='fixed')
        except:
            ShowText(self._top, 'Help: Recursive Descent Parser Application',
                     (__doc__ or '').strip(), width=75)

    def postscript(self, *e):
        self._autostep = 0
        self._cframe.print_to_file()

    def mainloop(self, *args, **kwargs):
        """
        Enter the Tkinter mainloop.  This function must be called if
        this demo is created from a non-interactive program (e.g.
        from a secript); otherwise, the demo will close as soon as
        the script completes.
        """
        if in_idle(): return
        self._top.mainloop(*args, **kwargs)

    def resize(self, size=None):
        if size is not None: self._size.set(size)
        size = self._size.get()
        self._font.configure(size=-(abs(size)))
        self._boldfont.configure(size=-(abs(size)))
        self._sysfont.configure(size=-(abs(size)))
        self._bigfont.configure(size=-(abs(size+2)))
        self._redraw()

    #########################################
    ##  Expand Production Selection
    #########################################

    def _toggle_grammar(self, *e):
        if self._show_grammar.get():
            self._prodframe.pack(fill='both', side='left', padx=2,
                                 after=self._feedbackframe)
            self._lastoper1['text'] = 'Show Grammar'
        else:
            self._prodframe.pack_forget()
            self._lastoper1['text'] = 'Hide Grammar'
        self._lastoper2['text'] = ''

#     def toggle_grammar(self, *e):
#         self._show_grammar = not self._show_grammar
#         if self._show_grammar:
#             self._prodframe.pack(fill='both', expand='y', side='left',
#                                  after=self._feedbackframe)
#             self._lastoper1['text'] = 'Show Grammar'
#         else:
#             self._prodframe.pack_forget()
#             self._lastoper1['text'] = 'Hide Grammar'
#         self._lastoper2['text'] = ''

    def _prodlist_select(self, event):
        selection = self._prodlist.curselection()
        if len(selection) != 1: return
        index = int(selection[0])
        old_frontier = self._parser.frontier()
        production = self._parser.expand(self._productions[index])

        if production:
            self._lastoper1['text'] = 'Expand:'
            self._lastoper2['text'] = production
            self._prodlist.selection_clear(0, 'end')
            self._prodlist.selection_set(index)
            self._animate_expand(old_frontier[0])
        else:
            # Reset the production selections.
            self._prodlist.selection_clear(0, 'end')
            for prod in self._parser.expandable_productions():
                index = self._productions.index(prod)
                self._prodlist.selection_set(index)

    #########################################
    ##  Animation
    #########################################

    def _animate_expand(self, treeloc):
        oldwidget = self._get(self._tree, treeloc)
        oldtree = oldwidget.parent()
        top = not isinstance(oldtree.parent(), TreeSegmentWidget)

        tree = self._parser.tree()
        for i in treeloc:
            tree = tree[i]

        widget = tree_to_treesegment(self._canvas, tree,
                                     node_font=self._boldfont,
                                     leaf_color='white',
                                     tree_width=2, tree_color='white',
                                     node_color='white',
                                     leaf_font=self._font)
        widget.label()['color'] = '#20a050'

        (oldx, oldy) = oldtree.label().bbox()[:2]
        (newx, newy) = widget.label().bbox()[:2]
        widget.move(oldx-newx, oldy-newy)

        if top:
            self._cframe.add_widget(widget, 0, 5)
            widget.move(30-widget.label().bbox()[0], 0)
            self._tree = widget
        else:
            oldtree.parent().replace_child(oldtree, widget)

        # Move the children over so they don't overlap.
        # Line the children up in a strange way.
        if widget.subtrees():
            dx = (oldx + widget.label().width()/2 -
                  widget.subtrees()[0].bbox()[0]/2 -
                  widget.subtrees()[0].bbox()[2]/2)
            for subtree in widget.subtrees(): subtree.move(dx, 0)

        self._makeroom(widget)

        if top:
            self._cframe.destroy_widget(oldtree)
        else:
            oldtree.destroy()

        colors = ['gray%d' % (10*int(10*x/self._animation_frames.get()))
                  for x in range(self._animation_frames.get(),0,-1)]

        # Move the text string down, if necessary.
        dy = widget.bbox()[3] + 30 - self._canvas.coords(self._textline)[1]
        if dy > 0:
            for twidget in self._textwidgets: twidget.move(0, dy)
            self._canvas.move(self._textline, 0, dy)

        self._animate_expand_frame(widget, colors)

    def _makeroom(self, treeseg):
        """
        Make sure that no sibling tree bbox's overlap.
        """
        parent = treeseg.parent()
        if not isinstance(parent, TreeSegmentWidget): return

        index = parent.subtrees().index(treeseg)

        # Handle siblings to the right
        rsiblings = parent.subtrees()[index+1:]
        if rsiblings:
            dx = treeseg.bbox()[2] - rsiblings[0].bbox()[0] + 10
            for sibling in rsiblings: sibling.move(dx, 0)

        # Handle siblings to the left
        if index > 0:
            lsibling = parent.subtrees()[index-1]
            dx = max(0, lsibling.bbox()[2] - treeseg.bbox()[0] + 10)
            treeseg.move(dx, 0)

        # Keep working up the tree.
        self._makeroom(parent)

    def _animate_expand_frame(self, widget, colors):
        if len(colors) > 0:
            self._animating_lock = 1
            widget['color'] = colors[0]
            for subtree in widget.subtrees():
                if isinstance(subtree, TreeSegmentWidget):
                    subtree.label()['color'] = colors[0]
                else:
                    subtree['color'] = colors[0]
            self._top.after(50, self._animate_expand_frame,
                            widget, colors[1:])
        else:
            widget['color'] = 'black'
            for subtree in widget.subtrees():
                if isinstance(subtree, TreeSegmentWidget):
                    subtree.label()['color'] = 'black'
                else:
                    subtree['color'] = 'black'
            self._redraw_quick()
            widget.label()['color'] = 'black'
            self._animating_lock = 0
            if self._autostep: self._step()

    def _animate_backtrack(self, treeloc):
        # Flash red first, if we're animating.
        if self._animation_frames.get() == 0: colors = []
        else: colors = ['#a00000', '#000000', '#a00000']
        colors += ['gray%d' % (10*int(10*x/(self._animation_frames.get())))
                   for x in range(1, self._animation_frames.get()+1)]

        widgets = [self._get(self._tree, treeloc).parent()]
        for subtree in widgets[0].subtrees():
            if isinstance(subtree, TreeSegmentWidget):
                widgets.append(subtree.label())
            else:
                widgets.append(subtree)

        self._animate_backtrack_frame(widgets, colors)

    def _animate_backtrack_frame(self, widgets, colors):
        if len(colors) > 0:
            self._animating_lock = 1
            for widget in widgets: widget['color'] = colors[0]
            self._top.after(50, self._animate_backtrack_frame,
                            widgets, colors[1:])
        else:
            for widget in widgets[0].subtrees():
                widgets[0].remove_child(widget)
                widget.destroy()
            self._redraw_quick()
            self._animating_lock = 0
            if self._autostep: self._step()

    def _animate_match_backtrack(self, treeloc):
        widget = self._get(self._tree, treeloc)
        node = widget.parent().label()
        dy = ((node.bbox()[3] - widget.bbox()[1] + 14) /
              max(1, self._animation_frames.get()))
        self._animate_match_backtrack_frame(self._animation_frames.get(),
                                            widget, dy)

    def _animate_match(self, treeloc):
        widget = self._get(self._tree, treeloc)

        dy = ((self._textwidgets[0].bbox()[1] - widget.bbox()[3] - 10.0) /
              max(1, self._animation_frames.get()))
        self._animate_match_frame(self._animation_frames.get(), widget, dy)

    def _animate_match_frame(self, frame, widget, dy):
        if frame > 0:
            self._animating_lock = 1
            widget.move(0, dy)
            self._top.after(10, self._animate_match_frame,
                            frame-1, widget, dy)
        else:
            widget['color'] = '#006040'
            self._redraw_quick()
            self._animating_lock = 0
            if self._autostep: self._step()

    def _animate_match_backtrack_frame(self, frame, widget, dy):
        if frame > 0:
            self._animating_lock = 1
            widget.move(0, dy)
            self._top.after(10, self._animate_match_backtrack_frame,
                            frame-1, widget, dy)
        else:
            widget.parent().remove_child(widget)
            widget.destroy()
            self._animating_lock = 0
            if self._autostep: self._step()

    def edit_grammar(self, *e):
        CFGEditor(self._top, self._parser.grammar(), self.set_grammar)

    def set_grammar(self, grammar):
        self._parser.set_grammar(grammar)
        self._productions = list(grammar.productions())
        self._prodlist.delete(0, 'end')
        for production in self._productions:
            self._prodlist.insert('end', (' %s' % production))

    def edit_sentence(self, *e):
        sentence = " ".join(self._sent)
        title = 'Edit Text'
        instr = 'Enter a new sentence to parse.'
        EntryDialog(self._top, sentence, instr, self.set_sentence, title)

    def set_sentence(self, sentence):
        self._sent = sentence.split() #[XX] use tagged?
        self.reset()
class ConcordanceSearchView(object):
    _BACKGROUND_COLOUR='#FFF' #white

    #Colour of highlighted results
    _HIGHLIGHT_WORD_COLOUR='#F00' #red
    _HIGHLIGHT_WORD_TAG='HL_WRD_TAG'

    _HIGHLIGHT_LABEL_COLOUR='#C0C0C0' # dark grey
    _HIGHLIGHT_LABEL_TAG='HL_LBL_TAG'


    #Percentage of text left of the scrollbar position
    _FRACTION_LEFT_TEXT=0.30

    def __init__(self):
        self.queue = q.Queue()
        self.model = ConcordanceSearchModel(self.queue)
        self.top = Tk()
        self._init_top(self.top)
        self._init_menubar()
        self._init_widgets(self.top)
        self.load_corpus(self.model.DEFAULT_CORPUS)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def _init_top(self, top):
        top.geometry('950x680+50+50')
        top.title('NLTK Concordance Search')
        top.bind('<Control-q>', self.destroy)
        top.protocol('WM_DELETE_WINDOW', self.destroy)
        top.minsize(950,680)

    def _init_widgets(self, parent):
        self.main_frame = Frame(parent, dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
        self._init_corpus_select(self.main_frame)
        self._init_query_box(self.main_frame)
        self._init_results_box(self.main_frame)
        self._init_paging(self.main_frame)
        self._init_status(self.main_frame)
        self.main_frame.pack(fill='both', expand=True)

    def _init_menubar(self):
        self._result_size = IntVar(self.top)
        self._cntx_bf_len = IntVar(self.top)
        self._cntx_af_len = IntVar(self.top)
        menubar = Menu(self.top)

        filemenu = Menu(menubar, tearoff=0, borderwidth=0)
        filemenu.add_command(label='Exit', underline=1,
                             command=self.destroy, accelerator='Ctrl-q')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        editmenu = Menu(menubar, tearoff=0)
        rescntmenu = Menu(editmenu, tearoff=0)
        rescntmenu.add_radiobutton(label='20', variable=self._result_size,
                                   underline=0, value=20,
                                   command=self.set_result_size)
        rescntmenu.add_radiobutton(label='50', variable=self._result_size,
                                   underline=0, value=50,
                                   command=self.set_result_size)
        rescntmenu.add_radiobutton(label='100', variable=self._result_size,
                                   underline=0, value=100,
                                   command=self.set_result_size)
        rescntmenu.invoke(1)
        editmenu.add_cascade(label='Result Count', underline=0, menu=rescntmenu)

        cntxmenu = Menu(editmenu, tearoff=0)
        cntxbfmenu = Menu(cntxmenu, tearoff=0)
        cntxbfmenu.add_radiobutton(label='60 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0, value=60,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.add_radiobutton(label='80 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0, value=80,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.add_radiobutton(label='100 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0, value=100,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.invoke(1)
        cntxmenu.add_cascade(label='Before', underline=0, menu=cntxbfmenu)

        cntxafmenu = Menu(cntxmenu, tearoff=0)
        cntxafmenu.add_radiobutton(label='70 characters',
                                   variable=self._cntx_af_len,
                                   underline=0, value=70,
                                   command=self.set_cntx_af_len)
        cntxafmenu.add_radiobutton(label='90 characters',
                                   variable=self._cntx_af_len,
                                   underline=0, value=90,
                                   command=self.set_cntx_af_len)
        cntxafmenu.add_radiobutton(label='110 characters',
                                   variable=self._cntx_af_len,
                                   underline=0, value=110,
                                   command=self.set_cntx_af_len)
        cntxafmenu.invoke(1)
        cntxmenu.add_cascade(label='After', underline=0, menu=cntxafmenu)

        editmenu.add_cascade(label='Context', underline=0, menu=cntxmenu)

        menubar.add_cascade(label='Edit', underline=0, menu=editmenu)

        self.top.config(menu=menubar)

    def set_result_size(self, **kwargs):
        self.model.result_count = self._result_size.get()

    def set_cntx_af_len(self, **kwargs):
        self._char_after = self._cntx_af_len.get()

    def set_cntx_bf_len(self, **kwargs):
        self._char_before = self._cntx_bf_len.get()

    def _init_corpus_select(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.var = StringVar(innerframe)
        self.var.set(self.model.DEFAULT_CORPUS)
        Label(innerframe, justify=LEFT, text=' Corpus: ',
              background=self._BACKGROUND_COLOUR, padx = 2, pady = 1, border = 0).pack(side='left')

        other_corpora = list(self.model.CORPORA.keys()).remove(self.model.DEFAULT_CORPUS)
        om = OptionMenu(innerframe, self.var, self.model.DEFAULT_CORPUS, command=self.corpus_selected, *self.model.non_default_corpora())
        om['borderwidth'] = 0
        om['highlightthickness'] = 1
        om.pack(side='left')
        innerframe.pack(side='top', fill='x', anchor='n')

    def _init_status(self, parent):
        self.status = Label(parent, justify=LEFT, relief=SUNKEN, background=self._BACKGROUND_COLOUR, border=0, padx = 1, pady = 0)
        self.status.pack(side='top', anchor='sw')

    def _init_query_box(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        another = Frame(innerframe, background=self._BACKGROUND_COLOUR)
        self.query_box = Entry(another, width=60)
        self.query_box.pack(side='left', fill='x', pady=25, anchor='center')
        self.search_button = Button(another, text='Search', command=self.search, borderwidth=1, highlightthickness=1)
        self.search_button.pack(side='left', fill='x', pady=25, anchor='center')
        self.query_box.bind('<KeyPress-Return>', self.search_enter_keypress_handler)
        another.pack()
        innerframe.pack(side='top', fill='x', anchor='n')

    def search_enter_keypress_handler(self, *event):
        self.search()

    def _init_results_box(self, parent):
        innerframe = Frame(parent)
        i1 = Frame(innerframe)
        i2 = Frame(innerframe)
        vscrollbar = Scrollbar(i1, borderwidth=1)
        hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
        self.results_box = Text(i1,
                                font=Font(family='courier', size='16'),
                                state='disabled', borderwidth=1,
                                                            yscrollcommand=vscrollbar.set,
                                xscrollcommand=hscrollbar.set, wrap='none', width='40', height = '20', exportselection=1)
        self.results_box.pack(side='left', fill='both', expand=True)
        self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG, foreground=self._HIGHLIGHT_WORD_COLOUR)
        self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG, foreground=self._HIGHLIGHT_LABEL_COLOUR)
        vscrollbar.pack(side='left', fill='y', anchor='e')
        vscrollbar.config(command=self.results_box.yview)
        hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
        hscrollbar.config(command=self.results_box.xview)
        #there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
        Label(i2, text='   ', background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
        i1.pack(side='top', fill='both', expand=True, anchor='n')
        i2.pack(side='bottom', fill='x', anchor='s')
        innerframe.pack(side='top', fill='both', expand=True)

    def _init_paging(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.prev = prev = Button(innerframe, text='Previous', command=self.previous, width='10', borderwidth=1, highlightthickness=1, state='disabled')
        prev.pack(side='left', anchor='center')
        self.next = next = Button(innerframe, text='Next', command=self.__next__, width='10', borderwidth=1, highlightthickness=1, state='disabled')
        next.pack(side='right', anchor='center')
        innerframe.pack(side='top', fill='y')
        self.current_page = 0

    def previous(self):
        self.clear_results_box()
        self.freeze_editable()
        self.model.prev(self.current_page - 1)

    def __next__(self):
        self.clear_results_box()
        self.freeze_editable()
        self.model.next(self.current_page + 1)

    def about(self, *e):
        ABOUT = ("NLTK Concordance Search Demo\n")
        TITLE = 'About: NLTK Concordance Search Demo'
        try:
            from six.moves.tkinter_messagebox import Message
            Message(message=ABOUT, title=TITLE, parent=self.main_frame).show()
        except:
            ShowText(self.top, TITLE, ABOUT)

    def _bind_event_handlers(self):
        self.top.bind(CORPUS_LOADED_EVENT, self.handle_corpus_loaded)
        self.top.bind(SEARCH_TERMINATED_EVENT, self.handle_search_terminated)
        self.top.bind(SEARCH_ERROR_EVENT, self.handle_search_error)
        self.top.bind(ERROR_LOADING_CORPUS_EVENT, self.handle_error_loading_corpus)

    def _poll(self):
        try:
            event = self.queue.get(block=False)
        except q.Empty:
            pass
        else:
            if event == CORPUS_LOADED_EVENT:
                self.handle_corpus_loaded(event)
            elif event == SEARCH_TERMINATED_EVENT:
                self.handle_search_terminated(event)
            elif event == SEARCH_ERROR_EVENT:
                self.handle_search_error(event)
            elif event == ERROR_LOADING_CORPUS_EVENT:
                self.handle_error_loading_corpus(event)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def handle_error_loading_corpus(self, event):
        self.status['text'] = 'Error in loading ' + self.var.get()
        self.unfreeze_editable()
        self.clear_all()
        self.freeze_editable()

    def handle_corpus_loaded(self, event):
        self.status['text'] = self.var.get() + ' is loaded'
        self.unfreeze_editable()
        self.clear_all()
        self.query_box.focus_set()

    def handle_search_terminated(self, event):
        #todo: refactor the model such that it is less state sensitive
        results = self.model.get_results()
        self.write_results(results)
        self.status['text'] = ''
        if len(results) == 0:
            self.status['text'] = 'No results found for ' + self.model.query
        else:
                self.current_page = self.model.last_requested_page
        self.unfreeze_editable()
        self.results_box.xview_moveto(self._FRACTION_LEFT_TEXT)

    def handle_search_error(self, event):
        self.status['text'] = 'Error in query ' + self.model.query
        self.unfreeze_editable()

    def corpus_selected(self, *args):
        new_selection = self.var.get()
        self.load_corpus(new_selection)

    def load_corpus(self, selection):
        if self.model.selected_corpus != selection:
            self.status['text'] = 'Loading ' + selection + '...'
            self.freeze_editable()
            self.model.load_corpus(selection)

    def search(self):
        self.current_page = 0
        self.clear_results_box()
        self.model.reset_results()
        query = self.query_box.get()
        if (len(query.strip()) == 0): return
        self.status['text']  = 'Searching for ' + query
        self.freeze_editable()
        self.model.search(query, self.current_page + 1, )


    def write_results(self, results):
        self.results_box['state'] = 'normal'
        row = 1
        for each in results:
            sent, pos1, pos2 = each[0].strip(), each[1], each[2]
            if len(sent) != 0:
                if (pos1 < self._char_before):
                    sent, pos1, pos2 = self.pad(sent, pos1, pos2)
                sentence = sent[pos1-self._char_before:pos1+self._char_after]
                if not row == len(results):
                    sentence += '\n'
                self.results_box.insert(str(row) + '.0', sentence)
                word_markers, label_markers = self.words_and_labels(sent, pos1, pos2)
                for marker in word_markers: self.results_box.tag_add(self._HIGHLIGHT_WORD_TAG, str(row) + '.' + str(marker[0]), str(row) + '.' + str(marker[1]))
                for marker in label_markers: self.results_box.tag_add(self._HIGHLIGHT_LABEL_TAG, str(row) + '.' + str(marker[0]), str(row) + '.' + str(marker[1]))
                row += 1
        self.results_box['state'] = 'disabled'

    def words_and_labels(self, sentence, pos1, pos2):
        search_exp = sentence[pos1:pos2]
        words, labels = [], []
        labeled_words = search_exp.split(' ')
        index = 0
        for each in labeled_words:
            if each == '':
                index += 1
            else:
                word, label = each.split('/')
                words.append((self._char_before + index, self._char_before + index + len(word)))
                index += len(word) + 1
                labels.append((self._char_before + index, self._char_before + index + len(label)))
                index += len(label)
            index += 1
        return words, labels

    def pad(self, sent, hstart, hend):
        if hstart >= self._char_before:
            return sent, hstart, hend
        d = self._char_before - hstart
        sent = ''.join([' '] * d) + sent
        return sent, hstart + d, hend + d

    def destroy(self, *e):
        if self.top is None: return
        self.top.after_cancel(self.after)
        self.top.destroy()
        self.top = None

    def clear_all(self):
        self.query_box.delete(0, END)
        self.model.reset_query()
        self.clear_results_box()

    def clear_results_box(self):
        self.results_box['state'] = 'normal'
        self.results_box.delete("1.0", END)
        self.results_box['state'] = 'disabled'

    def freeze_editable(self):
        self.query_box['state'] = 'disabled'
        self.search_button['state'] = 'disabled'
        self.prev['state'] = 'disabled'
        self.next['state'] = 'disabled'

    def unfreeze_editable(self):
        self.query_box['state'] = 'normal'
        self.search_button['state'] = 'normal'
        self.set_paging_button_states()

    def set_paging_button_states(self):
        if self.current_page == 0 or self.current_page == 1:
            self.prev['state'] = 'disabled'
        else:
            self.prev['state'] = 'normal'
        if self.model.has_more_pages(self.current_page):
            self.next['state'] = 'normal'
        else:
            self.next['state'] = 'disabled'

    def fire_event(self, event):
        #Firing an event so that rendering of widgets happen in the mainloop thread
        self.top.event_generate(event, when='tail')

    def mainloop(self, *args, **kwargs):
        if in_idle(): return
        self.top.mainloop(*args, **kwargs)
class DrtGlueDemo(object):
    def __init__(self, examples):
        # Set up the main window.
        self._top = Tk()
        self._top.title('DRT Glue Demo')

        # Set up key bindings.
        self._init_bindings()

        # Initialize the fonts.self._error = None
        self._init_fonts(self._top)

        self._examples = examples
        self._readingCache = [None for example in examples]

        # The user can hide the grammar.
        self._show_grammar = IntVar(self._top)
        self._show_grammar.set(1)

        # Set the data to None
        self._curExample = -1
        self._readings = []
        self._drs = None
        self._drsWidget = None
        self._error = None

        self._init_glue()

        # Create the basic frames.
        self._init_menubar(self._top)
        self._init_buttons(self._top)
        self._init_exampleListbox(self._top)
        self._init_readingListbox(self._top)
        self._init_canvas(self._top)

        # Resize callback
        self._canvas.bind('<Configure>', self._configure)

    #########################################
    ##  Initialization Helpers
    #########################################

    def _init_glue(self):
        tagger = RegexpTagger(
            [('^(David|Mary|John)$', 'NNP'),
             ('^(walks|sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$', 'VB'),
             ('^(go|order|vanish|find|approach)$', 'VB'),
             ('^(a)$', 'ex_quant'),
             ('^(every)$', 'univ_quant'),
             ('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
             ('^(big|gray|former)$', 'JJ'),
             ('^(him|himself)$', 'PRP')
        ])

        depparser = MaltParser(tagger=tagger)
        self._glue = DrtGlue(depparser=depparser, remove_duplicates=False)

    def _init_fonts(self, root):
        # See: <http://www.astro.washington.edu/owen/ROTKFolklore.html>
        self._sysfont = Font(font=Button()["font"])
        root.option_add("*Font", self._sysfont)

        # TWhat's our font size (default=same as sysfont)
        self._size = IntVar(root)
        self._size.set(self._sysfont.cget('size'))

        self._boldfont = Font(family='helvetica', weight='bold',
                                    size=self._size.get())
        self._font = Font(family='helvetica',
                                    size=self._size.get())
        if self._size.get() < 0: big = self._size.get()-2
        else: big = self._size.get()+2
        self._bigfont = Font(family='helvetica', weight='bold',
                                    size=big)

    def _init_exampleListbox(self, parent):
        self._exampleFrame = listframe = Frame(parent)
        self._exampleFrame.pack(fill='both', side='left', padx=2)
        self._exampleList_label = Label(self._exampleFrame, font=self._boldfont,
                                     text='Examples')
        self._exampleList_label.pack()
        self._exampleList = Listbox(self._exampleFrame, selectmode='single',
                                 relief='groove', background='white',
                                 foreground='#909090', font=self._font,
                                 selectforeground='#004040',
                                 selectbackground='#c0f0c0')

        self._exampleList.pack(side='right', fill='both', expand=1)

        for example in self._examples:
            self._exampleList.insert('end', ('  %s' % example))
        self._exampleList.config(height=min(len(self._examples), 25), width=40)

        # Add a scrollbar if there are more than 25 examples.
        if len(self._examples) > 25:
            listscroll = Scrollbar(self._exampleFrame,
                                   orient='vertical')
            self._exampleList.config(yscrollcommand = listscroll.set)
            listscroll.config(command=self._exampleList.yview)
            listscroll.pack(side='left', fill='y')

        # If they select a example, apply it.
        self._exampleList.bind('<<ListboxSelect>>', self._exampleList_select)

    def _init_readingListbox(self, parent):
        self._readingFrame = listframe = Frame(parent)
        self._readingFrame.pack(fill='both', side='left', padx=2)
        self._readingList_label = Label(self._readingFrame, font=self._boldfont,
                                     text='Readings')
        self._readingList_label.pack()
        self._readingList = Listbox(self._readingFrame, selectmode='single',
                                 relief='groove', background='white',
                                 foreground='#909090', font=self._font,
                                 selectforeground='#004040',
                                 selectbackground='#c0f0c0')

        self._readingList.pack(side='right', fill='both', expand=1)

        # Add a scrollbar if there are more than 25 examples.
        listscroll = Scrollbar(self._readingFrame,
                               orient='vertical')
        self._readingList.config(yscrollcommand = listscroll.set)
        listscroll.config(command=self._readingList.yview)
        listscroll.pack(side='right', fill='y')

        self._populate_readingListbox()

    def _populate_readingListbox(self):
        # Populate the listbox with integers
        self._readingList.delete(0, 'end')
        for i in range(len(self._readings)):
            self._readingList.insert('end', ('  %s' % (i+1)))
        self._readingList.config(height=min(len(self._readings), 25), width=5)

        # If they select a example, apply it.
        self._readingList.bind('<<ListboxSelect>>', self._readingList_select)

    def _init_bindings(self):
        # Key bindings are a good thing.
        self._top.bind('<Control-q>', self.destroy)
        self._top.bind('<Control-x>', self.destroy)
        self._top.bind('<Escape>', self.destroy)
        self._top.bind('n', self.next)
        self._top.bind('<space>', self.next)
        self._top.bind('p', self.prev)
        self._top.bind('<BackSpace>', self.prev)

    def _init_buttons(self, parent):
        # Set up the frames.
        self._buttonframe = buttonframe = Frame(parent)
        buttonframe.pack(fill='none', side='bottom', padx=3, pady=2)
        Button(buttonframe, text='Prev',
               background='#90c0d0', foreground='black',
               command=self.prev,).pack(side='left')
        Button(buttonframe, text='Next',
               background='#90c0d0', foreground='black',
               command=self.next,).pack(side='left')

    def _configure(self, event):
        self._autostep = 0
        (x1, y1, x2, y2) = self._cframe.scrollregion()
        y2 = event.height - 6
        self._canvas['scrollregion'] = '%d %d %d %d' % (x1,y1,x2,y2)
        self._redraw()

    def _init_canvas(self, parent):
        self._cframe = CanvasFrame(parent, background='white',
                                   #width=525, height=250,
                                   closeenough=10,
                                   border=2, relief='sunken')
        self._cframe.pack(expand=1, fill='both', side='top', pady=2)
        canvas = self._canvas = self._cframe.canvas()

        # Initially, there's no tree or text
        self._tree = None
        self._textwidgets = []
        self._textline = None

    def _init_menubar(self, parent):
        menubar = Menu(parent)

        filemenu = Menu(menubar, tearoff=0)
        filemenu.add_command(label='Exit', underline=1,
                             command=self.destroy, accelerator='q')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        actionmenu = Menu(menubar, tearoff=0)
        actionmenu.add_command(label='Next', underline=0,
                               command=self.next, accelerator='n, Space')
        actionmenu.add_command(label='Previous', underline=0,
                               command=self.prev, accelerator='p, Backspace')
        menubar.add_cascade(label='Action', underline=0, menu=actionmenu)

        optionmenu = Menu(menubar, tearoff=0)
        optionmenu.add_checkbutton(label='Remove Duplicates', underline=0,
                                   variable=self._glue.remove_duplicates,
                                   command=self._toggle_remove_duplicates,
                                   accelerator='r')
        menubar.add_cascade(label='Options', underline=0, menu=optionmenu)

        viewmenu = Menu(menubar, tearoff=0)
        viewmenu.add_radiobutton(label='Tiny', variable=self._size,
                                 underline=0, value=10, command=self.resize)
        viewmenu.add_radiobutton(label='Small', variable=self._size,
                                 underline=0, value=12, command=self.resize)
        viewmenu.add_radiobutton(label='Medium', variable=self._size,
                                 underline=0, value=14, command=self.resize)
        viewmenu.add_radiobutton(label='Large', variable=self._size,
                                 underline=0, value=18, command=self.resize)
        viewmenu.add_radiobutton(label='Huge', variable=self._size,
                                 underline=0, value=24, command=self.resize)
        menubar.add_cascade(label='View', underline=0, menu=viewmenu)

        helpmenu = Menu(menubar, tearoff=0)
        helpmenu.add_command(label='About', underline=0,
                             command=self.about)
        menubar.add_cascade(label='Help', underline=0, menu=helpmenu)

        parent.config(menu=menubar)

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        canvas = self._canvas

        # Delete the old DRS, widgets, etc.
        if self._drsWidget is not None:
            self._drsWidget.clear()

        if self._drs:
            self._drsWidget = DrsWidget( self._canvas, self._drs )
            self._drsWidget.draw()

        if self._error:
            self._drsWidget = DrsWidget( self._canvas, self._error )
            self._drsWidget.draw()

    #########################################
    ##  Button Callbacks
    #########################################

    def destroy(self, *e):
        self._autostep = 0
        if self._top is None: return
        self._top.destroy()
        self._top = None

    def prev(self, *e):
        selection = self._readingList.curselection()
        readingListSize = self._readingList.size()

        # there are readings
        if readingListSize > 0:
            # if one reading is currently selected
            if len(selection) == 1:
                index = int(selection[0])

                # if it's on (or before) the first item
                if index <= 0:
                    self._select_previous_example()
                else:
                    self._readingList_store_selection(index-1)

            else:
                #select its first reading
                self._readingList_store_selection(readingListSize-1)

        else:
            self._select_previous_example()


    def _select_previous_example(self):
        #if the current example is not the first example
        if self._curExample > 0:
            self._exampleList_store_selection(self._curExample-1)
        else:
            #go to the last example
            self._exampleList_store_selection(len(self._examples)-1)

    def next(self, *e):
        selection = self._readingList.curselection()
        readingListSize = self._readingList.size()

        # if there are readings
        if readingListSize > 0:
            # if one reading is currently selected
            if len(selection) == 1:
                index = int(selection[0])

                # if it's on (or past) the last item
                if index >= (readingListSize-1):
                    self._select_next_example()
                else:
                    self._readingList_store_selection(index+1)

            else:
                #select its first reading
                self._readingList_store_selection(0)

        else:
            self._select_next_example()

    def _select_next_example(self):
        #if the current example is not the last example
        if self._curExample < len(self._examples)-1:
            self._exampleList_store_selection(self._curExample+1)
        else:
            #go to the first example
            self._exampleList_store_selection(0)


    def about(self, *e):
        ABOUT = ("NLTK Discourse Representation Theory (DRT) Glue Semantics Demo\n"+
                 "Written by Daniel H. Garrette")
        TITLE = 'About: NLTK DRT Glue Demo'
        try:
            from six.moves.tkinter_messagebox import Message
            Message(message=ABOUT, title=TITLE).show()
        except:
            ShowText(self._top, TITLE, ABOUT)

    def postscript(self, *e):
        self._autostep = 0
        self._cframe.print_to_file()

    def mainloop(self, *args, **kwargs):
        """
        Enter the Tkinter mainloop.  This function must be called if
        this demo is created from a non-interactive program (e.g.
        from a secript); otherwise, the demo will close as soon as
        the script completes.
        """
        if in_idle(): return
        self._top.mainloop(*args, **kwargs)

    def resize(self, size=None):
        if size is not None: self._size.set(size)
        size = self._size.get()
        self._font.configure(size=-(abs(size)))
        self._boldfont.configure(size=-(abs(size)))
        self._sysfont.configure(size=-(abs(size)))
        self._bigfont.configure(size=-(abs(size+2)))
        self._redraw()

    def _toggle_remove_duplicates(self):
        self._glue.remove_duplicates = not self._glue.remove_duplicates

        self._exampleList.selection_clear(0, 'end')
        self._readings = []
        self._populate_readingListbox()
        self._readingCache = [None for ex in self._examples]
        self._curExample = -1
        self._error = None

        self._drs = None
        self._redraw()


    def _exampleList_select(self, event):
        selection = self._exampleList.curselection()
        if len(selection) != 1: return
        self._exampleList_store_selection(int(selection[0]))

    def _exampleList_store_selection(self, index):
        self._curExample = index
        example = self._examples[index]

        self._exampleList.selection_clear(0, 'end')
        if example:
            cache = self._readingCache[index]
            if cache:
                if isinstance(cache, list):
                    self._readings = cache
                    self._error = None
                else:
                    self._readings = []
                    self._error = cache
            else:
                try:
                    self._readings = self._glue.parse_to_meaning(example)
                    self._error = None
                    self._readingCache[index] = self._readings
                except Exception as e:
                    self._readings = []
                    self._error = DrtVariableExpression(Variable('Error: ' + str(e)))
                    self._readingCache[index] = self._error

                    #add a star to the end of the example
                    self._exampleList.delete(index)
                    self._exampleList.insert(index, ('  %s *' % example))
                    self._exampleList.config(height=min(len(self._examples), 25), width=40)

            self._populate_readingListbox()

            self._exampleList.selection_set(index)

            self._drs = None
            self._redraw()


    def _readingList_select(self, event):
        selection = self._readingList.curselection()
        if len(selection) != 1: return
        self._readingList_store_selection(int(selection[0]))

    def _readingList_store_selection(self, index):
        reading = self._readings[index]

        self._readingList.selection_clear(0, 'end')
        if reading:
            self._readingList.selection_set(index)

            self._drs = reading.simplify().normalize().resolve_anaphora()

            self._redraw()
 def _init_status(self, parent):
     self.status = Label(parent, justify=LEFT, relief=SUNKEN, background=self._BACKGROUND_COLOUR, border=0, padx = 1, pady = 0)
     self.status.pack(side='top', anchor='sw')
예제 #46
0
파일: gui.py 프로젝트: 173210/depot_tools
    def init_gui(self):
        """init helper"""

        window = PanedWindow(self.root, orient="vertical")
        window.pack(side=TOP, fill=BOTH, expand=True)

        top_pane = Frame(window)
        window.add(top_pane)
        mid_pane = Frame(window)
        window.add(mid_pane)
        bottom_pane = Frame(window)
        window.add(bottom_pane)

        #setting up frames
        top_frame = Frame(top_pane)
        mid_frame = Frame(top_pane)
        history_frame = Frame(top_pane)
        radio_frame = Frame(mid_pane)
        rating_frame = Frame(mid_pane)
        res_frame = Frame(mid_pane)
        check_frame = Frame(bottom_pane)
        msg_frame = Frame(bottom_pane)
        btn_frame = Frame(bottom_pane)
        top_frame.pack(side=TOP, fill=X)
        mid_frame.pack(side=TOP, fill=X)
        history_frame.pack(side=TOP, fill=BOTH, expand=True)
        radio_frame.pack(side=TOP, fill=X)
        rating_frame.pack(side=TOP, fill=X)
        res_frame.pack(side=TOP, fill=BOTH, expand=True)
        check_frame.pack(side=TOP, fill=X)
        msg_frame.pack(side=TOP, fill=BOTH, expand=True)
        btn_frame.pack(side=TOP, fill=X)

        # Binding F5 application-wide to run lint
        self.root.bind('<F5>', self.run_lint)

        #Message ListBox
        rightscrollbar = Scrollbar(msg_frame)
        rightscrollbar.pack(side=RIGHT, fill=Y)
        bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
        bottomscrollbar.pack(side=BOTTOM, fill=X)
        self.lb_messages = Listbox(
            msg_frame,
            yscrollcommand=rightscrollbar.set,
            xscrollcommand=bottomscrollbar.set,
            bg="white")
        self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
        self.lb_messages.pack(expand=True, fill=BOTH)
        rightscrollbar.config(command=self.lb_messages.yview)
        bottomscrollbar.config(command=self.lb_messages.xview)

        #History ListBoxes
        rightscrollbar2 = Scrollbar(history_frame)
        rightscrollbar2.pack(side=RIGHT, fill=Y)
        bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
        bottomscrollbar2.pack(side=BOTTOM, fill=X)
        self.showhistory = Listbox(
            history_frame,
            yscrollcommand=rightscrollbar2.set,
            xscrollcommand=bottomscrollbar2.set,
            bg="white")
        self.showhistory.pack(expand=True, fill=BOTH)
        rightscrollbar2.config(command=self.showhistory.yview)
        bottomscrollbar2.config(command=self.showhistory.xview)
        self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
        self.set_history_window()

        #status bar
        self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
        self.status.pack(side=BOTTOM, fill=X)

        #labelbl_ratingls
        lbl_rating_label = Label(rating_frame, text='Rating:')
        lbl_rating_label.pack(side=LEFT)
        lbl_rating = Label(rating_frame, textvariable=self.rating)
        lbl_rating.pack(side=LEFT)
        Label(mid_frame, text='Recently Used:').pack(side=LEFT)
        Label(top_frame, text='Module or package').pack(side=LEFT)

        #file textbox
        self.txt_module = Entry(top_frame, background='white')
        self.txt_module.bind('<Return>', self.run_lint)
        self.txt_module.pack(side=LEFT, expand=True, fill=X)

        #results box
        rightscrollbar = Scrollbar(res_frame)
        rightscrollbar.pack(side=RIGHT, fill=Y)
        bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
        bottomscrollbar.pack(side=BOTTOM, fill=X)
        self.results = Listbox(
            res_frame,
            yscrollcommand=rightscrollbar.set,
            xscrollcommand=bottomscrollbar.set,
            bg="white", font="Courier")
        self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
        rightscrollbar.config(command=self.results.yview)
        bottomscrollbar.config(command=self.results.xview)

        #buttons
        Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
        Button(top_frame, text='Open Package',
               command=(lambda: self.file_open(package=True))).pack(side=LEFT)

        self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
        self.btnRun.pack(side=LEFT)
        Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)

        #radio buttons
        self.information_box = IntVar()
        self.convention_box = IntVar()
        self.refactor_box = IntVar()
        self.warning_box = IntVar()
        self.error_box = IntVar()
        self.fatal_box = IntVar()
        i = Checkbutton(check_frame, text="Information", fg=COLORS['(I)'],
                        variable=self.information_box, command=self.refresh_msg_window)
        c = Checkbutton(check_frame, text="Convention", fg=COLORS['(C)'],
                        variable=self.convention_box, command=self.refresh_msg_window)
        r = Checkbutton(check_frame, text="Refactor", fg=COLORS['(R)'],
                        variable=self.refactor_box, command=self.refresh_msg_window)
        w = Checkbutton(check_frame, text="Warning", fg=COLORS['(W)'],
                        variable=self.warning_box, command=self.refresh_msg_window)
        e = Checkbutton(check_frame, text="Error", fg=COLORS['(E)'],
                        variable=self.error_box, command=self.refresh_msg_window)
        f = Checkbutton(check_frame, text="Fatal", fg=COLORS['(F)'],
                        variable=self.fatal_box, command=self.refresh_msg_window)
        i.select()
        c.select()
        r.select()
        w.select()
        e.select()
        f.select()
        i.pack(side=LEFT)
        c.pack(side=LEFT)
        r.pack(side=LEFT)
        w.pack(side=LEFT)
        e.pack(side=LEFT)
        f.pack(side=LEFT)

        #check boxes
        self.box = StringVar()
        # XXX should be generated
        report = Radiobutton(
            radio_frame, text="Report", variable=self.box,
            value="Report", command=self.refresh_results_window)
        raw_met = Radiobutton(
            radio_frame, text="Raw metrics", variable=self.box,
            value="Raw metrics", command=self.refresh_results_window)
        dup = Radiobutton(
            radio_frame, text="Duplication", variable=self.box,
            value="Duplication", command=self.refresh_results_window)
        ext = Radiobutton(
            radio_frame, text="External dependencies",
            variable=self.box, value="External dependencies",
            command=self.refresh_results_window)
        stat = Radiobutton(
            radio_frame, text="Statistics by type",
            variable=self.box, value="Statistics by type",
            command=self.refresh_results_window)
        msg_cat = Radiobutton(
            radio_frame, text="Messages by category",
            variable=self.box, value="Messages by category",
            command=self.refresh_results_window)
        msg = Radiobutton(
            radio_frame, text="Messages", variable=self.box,
            value="Messages", command=self.refresh_results_window)
        source_file = Radiobutton(
            radio_frame, text="Source File", variable=self.box,
            value="Source File", command=self.refresh_results_window)
        report.select()
        report.grid(column=0, row=0, sticky=W)
        raw_met.grid(column=1, row=0, sticky=W)
        dup.grid(column=2, row=0, sticky=W)
        msg.grid(column=3, row=0, sticky=W)
        stat.grid(column=0, row=1, sticky=W)
        msg_cat.grid(column=1, row=1, sticky=W)
        ext.grid(column=2, row=1, sticky=W)
        source_file.grid(column=3, row=1, sticky=W)

        #dictionary for check boxes and associated error term
        self.msg_type_dict = {
            'I': lambda: self.information_box.get() == 1,
            'C': lambda: self.convention_box.get() == 1,
            'R': lambda: self.refactor_box.get() == 1,
            'E': lambda: self.error_box.get() == 1,
            'W': lambda: self.warning_box.get() == 1,
            'F': lambda: self.fatal_box.get() == 1
        }
        self.txt_module.focus_set()
예제 #47
0
파일: gui.py 프로젝트: 173210/depot_tools
class LintGui(object):
    """Build and control a window to interact with pylint"""

    def __init__(self, root=None):
        """init"""
        self.root = root or Tk()
        self.root.title('Pylint')
        #reporter
        self.reporter = None
        #message queue for output from reporter
        self.msg_queue = six.moves.queue.Queue()
        self.msgs = []
        self.visible_msgs = []
        self.filenames = []
        self.rating = StringVar()
        self.tabs = {}
        self.report_stream = BasicStream(self)
        #gui objects
        self.lb_messages = None
        self.showhistory = None
        self.results = None
        self.btnRun = None
        self.information_box = None
        self.convention_box = None
        self.refactor_box = None
        self.warning_box = None
        self.error_box = None
        self.fatal_box = None
        self.txtModule = None
        self.status = None
        self.msg_type_dict = None
        self.init_gui()

    def init_gui(self):
        """init helper"""

        window = PanedWindow(self.root, orient="vertical")
        window.pack(side=TOP, fill=BOTH, expand=True)

        top_pane = Frame(window)
        window.add(top_pane)
        mid_pane = Frame(window)
        window.add(mid_pane)
        bottom_pane = Frame(window)
        window.add(bottom_pane)

        #setting up frames
        top_frame = Frame(top_pane)
        mid_frame = Frame(top_pane)
        history_frame = Frame(top_pane)
        radio_frame = Frame(mid_pane)
        rating_frame = Frame(mid_pane)
        res_frame = Frame(mid_pane)
        check_frame = Frame(bottom_pane)
        msg_frame = Frame(bottom_pane)
        btn_frame = Frame(bottom_pane)
        top_frame.pack(side=TOP, fill=X)
        mid_frame.pack(side=TOP, fill=X)
        history_frame.pack(side=TOP, fill=BOTH, expand=True)
        radio_frame.pack(side=TOP, fill=X)
        rating_frame.pack(side=TOP, fill=X)
        res_frame.pack(side=TOP, fill=BOTH, expand=True)
        check_frame.pack(side=TOP, fill=X)
        msg_frame.pack(side=TOP, fill=BOTH, expand=True)
        btn_frame.pack(side=TOP, fill=X)

        # Binding F5 application-wide to run lint
        self.root.bind('<F5>', self.run_lint)

        #Message ListBox
        rightscrollbar = Scrollbar(msg_frame)
        rightscrollbar.pack(side=RIGHT, fill=Y)
        bottomscrollbar = Scrollbar(msg_frame, orient=HORIZONTAL)
        bottomscrollbar.pack(side=BOTTOM, fill=X)
        self.lb_messages = Listbox(
            msg_frame,
            yscrollcommand=rightscrollbar.set,
            xscrollcommand=bottomscrollbar.set,
            bg="white")
        self.lb_messages.bind("<Double-Button-1>", self.show_sourcefile)
        self.lb_messages.pack(expand=True, fill=BOTH)
        rightscrollbar.config(command=self.lb_messages.yview)
        bottomscrollbar.config(command=self.lb_messages.xview)

        #History ListBoxes
        rightscrollbar2 = Scrollbar(history_frame)
        rightscrollbar2.pack(side=RIGHT, fill=Y)
        bottomscrollbar2 = Scrollbar(history_frame, orient=HORIZONTAL)
        bottomscrollbar2.pack(side=BOTTOM, fill=X)
        self.showhistory = Listbox(
            history_frame,
            yscrollcommand=rightscrollbar2.set,
            xscrollcommand=bottomscrollbar2.set,
            bg="white")
        self.showhistory.pack(expand=True, fill=BOTH)
        rightscrollbar2.config(command=self.showhistory.yview)
        bottomscrollbar2.config(command=self.showhistory.xview)
        self.showhistory.bind('<Double-Button-1>', self.select_recent_file)
        self.set_history_window()

        #status bar
        self.status = Label(self.root, text="", bd=1, relief=SUNKEN, anchor=W)
        self.status.pack(side=BOTTOM, fill=X)

        #labelbl_ratingls
        lbl_rating_label = Label(rating_frame, text='Rating:')
        lbl_rating_label.pack(side=LEFT)
        lbl_rating = Label(rating_frame, textvariable=self.rating)
        lbl_rating.pack(side=LEFT)
        Label(mid_frame, text='Recently Used:').pack(side=LEFT)
        Label(top_frame, text='Module or package').pack(side=LEFT)

        #file textbox
        self.txt_module = Entry(top_frame, background='white')
        self.txt_module.bind('<Return>', self.run_lint)
        self.txt_module.pack(side=LEFT, expand=True, fill=X)

        #results box
        rightscrollbar = Scrollbar(res_frame)
        rightscrollbar.pack(side=RIGHT, fill=Y)
        bottomscrollbar = Scrollbar(res_frame, orient=HORIZONTAL)
        bottomscrollbar.pack(side=BOTTOM, fill=X)
        self.results = Listbox(
            res_frame,
            yscrollcommand=rightscrollbar.set,
            xscrollcommand=bottomscrollbar.set,
            bg="white", font="Courier")
        self.results.pack(expand=True, fill=BOTH, side=BOTTOM)
        rightscrollbar.config(command=self.results.yview)
        bottomscrollbar.config(command=self.results.xview)

        #buttons
        Button(top_frame, text='Open', command=self.file_open).pack(side=LEFT)
        Button(top_frame, text='Open Package',
               command=(lambda: self.file_open(package=True))).pack(side=LEFT)

        self.btnRun = Button(top_frame, text='Run', command=self.run_lint)
        self.btnRun.pack(side=LEFT)
        Button(btn_frame, text='Quit', command=self.quit).pack(side=BOTTOM)

        #radio buttons
        self.information_box = IntVar()
        self.convention_box = IntVar()
        self.refactor_box = IntVar()
        self.warning_box = IntVar()
        self.error_box = IntVar()
        self.fatal_box = IntVar()
        i = Checkbutton(check_frame, text="Information", fg=COLORS['(I)'],
                        variable=self.information_box, command=self.refresh_msg_window)
        c = Checkbutton(check_frame, text="Convention", fg=COLORS['(C)'],
                        variable=self.convention_box, command=self.refresh_msg_window)
        r = Checkbutton(check_frame, text="Refactor", fg=COLORS['(R)'],
                        variable=self.refactor_box, command=self.refresh_msg_window)
        w = Checkbutton(check_frame, text="Warning", fg=COLORS['(W)'],
                        variable=self.warning_box, command=self.refresh_msg_window)
        e = Checkbutton(check_frame, text="Error", fg=COLORS['(E)'],
                        variable=self.error_box, command=self.refresh_msg_window)
        f = Checkbutton(check_frame, text="Fatal", fg=COLORS['(F)'],
                        variable=self.fatal_box, command=self.refresh_msg_window)
        i.select()
        c.select()
        r.select()
        w.select()
        e.select()
        f.select()
        i.pack(side=LEFT)
        c.pack(side=LEFT)
        r.pack(side=LEFT)
        w.pack(side=LEFT)
        e.pack(side=LEFT)
        f.pack(side=LEFT)

        #check boxes
        self.box = StringVar()
        # XXX should be generated
        report = Radiobutton(
            radio_frame, text="Report", variable=self.box,
            value="Report", command=self.refresh_results_window)
        raw_met = Radiobutton(
            radio_frame, text="Raw metrics", variable=self.box,
            value="Raw metrics", command=self.refresh_results_window)
        dup = Radiobutton(
            radio_frame, text="Duplication", variable=self.box,
            value="Duplication", command=self.refresh_results_window)
        ext = Radiobutton(
            radio_frame, text="External dependencies",
            variable=self.box, value="External dependencies",
            command=self.refresh_results_window)
        stat = Radiobutton(
            radio_frame, text="Statistics by type",
            variable=self.box, value="Statistics by type",
            command=self.refresh_results_window)
        msg_cat = Radiobutton(
            radio_frame, text="Messages by category",
            variable=self.box, value="Messages by category",
            command=self.refresh_results_window)
        msg = Radiobutton(
            radio_frame, text="Messages", variable=self.box,
            value="Messages", command=self.refresh_results_window)
        source_file = Radiobutton(
            radio_frame, text="Source File", variable=self.box,
            value="Source File", command=self.refresh_results_window)
        report.select()
        report.grid(column=0, row=0, sticky=W)
        raw_met.grid(column=1, row=0, sticky=W)
        dup.grid(column=2, row=0, sticky=W)
        msg.grid(column=3, row=0, sticky=W)
        stat.grid(column=0, row=1, sticky=W)
        msg_cat.grid(column=1, row=1, sticky=W)
        ext.grid(column=2, row=1, sticky=W)
        source_file.grid(column=3, row=1, sticky=W)

        #dictionary for check boxes and associated error term
        self.msg_type_dict = {
            'I': lambda: self.information_box.get() == 1,
            'C': lambda: self.convention_box.get() == 1,
            'R': lambda: self.refactor_box.get() == 1,
            'E': lambda: self.error_box.get() == 1,
            'W': lambda: self.warning_box.get() == 1,
            'F': lambda: self.fatal_box.get() == 1
        }
        self.txt_module.focus_set()


    def select_recent_file(self, event): # pylint: disable=unused-argument
        """adds the selected file in the history listbox to the Module box"""
        if not self.showhistory.size():
            return

        selected = self.showhistory.curselection()
        item = self.showhistory.get(selected)
        #update module
        self.txt_module.delete(0, END)
        self.txt_module.insert(0, item)

    def refresh_msg_window(self):
        """refresh the message window with current output"""
        #clear the window
        self.lb_messages.delete(0, END)
        self.visible_msgs = []
        for msg in self.msgs:
            if self.msg_type_dict.get(msg.C)():
                self.visible_msgs.append(msg)
                msg_str = convert_to_string(msg)
                self.lb_messages.insert(END, msg_str)
                fg_color = COLORS.get(msg_str[:3], 'black')
                self.lb_messages.itemconfigure(END, fg=fg_color)

    def refresh_results_window(self):
        """refresh the results window with current output"""
        #clear the window
        self.results.delete(0, END)
        try:
            for res in self.tabs[self.box.get()]:
                self.results.insert(END, res)
        except KeyError:
            pass

    def process_incoming(self):
        """process the incoming messages from running pylint"""
        while self.msg_queue.qsize():
            try:
                msg = self.msg_queue.get(0)
                if msg == "DONE":
                    self.report_stream.output_contents()
                    return False

                #adding message to list of msgs
                self.msgs.append(msg)

                #displaying msg if message type is selected in check box
                if self.msg_type_dict.get(msg.C)():
                    self.visible_msgs.append(msg)
                    msg_str = convert_to_string(msg)
                    self.lb_messages.insert(END, msg_str)
                    fg_color = COLORS.get(msg_str[:3], 'black')
                    self.lb_messages.itemconfigure(END, fg=fg_color)

            except six.moves.queue.Empty:
                pass
        return True

    def periodic_call(self):
        """determine when to unlock the run button"""
        if self.process_incoming():
            self.root.after(100, self.periodic_call)
        else:
            #enabling button so it can be run again
            self.btnRun.config(state=NORMAL)

    def mainloop(self):
        """launch the mainloop of the application"""
        self.root.mainloop()

    def quit(self, _=None):
        """quit the application"""
        self.root.quit()

    def halt(self): # pylint: disable=no-self-use
        """program halt placeholder"""
        return

    def file_open(self, package=False, _=None):
        """launch a file browser"""
        if not package:
            filename = askopenfilename(parent=self.root,
                                       filetypes=[('pythonfiles', '*.py'),
                                                  ('allfiles', '*')],
                                       title='Select Module')
        else:
            filename = askdirectory(title="Select A Folder", mustexist=1)

        if filename == ():
            return

        self.txt_module.delete(0, END)
        self.txt_module.insert(0, filename)

    def update_filenames(self):
        """update the list of recent filenames"""
        filename = self.txt_module.get()
        if not filename:
            filename = os.getcwd()
        if filename+'\n' in self.filenames:
            index = self.filenames.index(filename+'\n')
            self.filenames.pop(index)

        #ensure only 10 most recent are stored
        if len(self.filenames) == 10:
            self.filenames.pop()
        self.filenames.insert(0, filename+'\n')

    def set_history_window(self):
        """update the history window with info from the history file"""
        #clear the window
        self.showhistory.delete(0, END)
        # keep the last 10 most recent files
        try:
            view_history = open(HOME+HISTORY, 'r')
            for hist in view_history.readlines():
                if not hist in self.filenames:
                    self.filenames.append(hist)
                self.showhistory.insert(END, hist.split('\n')[0])
            view_history.close()
        except IOError:
            # do nothing since history file will be created later
            return

    def run_lint(self, _=None):
        """launches pylint"""
        self.update_filenames()
        self.root.configure(cursor='watch')
        self.reporter = GUIReporter(self, output=self.report_stream)
        module = self.txt_module.get()
        if not module:
            module = os.getcwd()

        #cleaning up msgs and windows
        self.msgs = []
        self.visible_msgs = []
        self.lb_messages.delete(0, END)
        self.tabs = {}
        self.results.delete(0, END)
        self.btnRun.config(state=DISABLED)

        #setting up a worker thread to run pylint
        worker = Thread(target=lint_thread, args=(module, self.reporter, self,))
        self.periodic_call()
        worker.start()

        # Overwrite the .pylint-gui-history file with all the new recently added files
        # in order from filenames but only save last 10 files
        write_history = open(HOME+HISTORY, 'w')
        write_history.writelines(self.filenames)
        write_history.close()
        self.set_history_window()

        self.root.configure(cursor='')

    def show_sourcefile(self, event=None):  # pylint: disable=unused-argument
        selected = self.lb_messages.curselection()
        if not selected:
            return

        msg = self.visible_msgs[int(selected[0])]
        scroll = msg.line - 3
        if scroll < 0:
            scroll = 0

        self.tabs["Source File"] = open(msg.path, "r").readlines()
        self.box.set("Source File")
        self.refresh_results_window()
        self.results.yview(scroll)
        self.results.select_set(msg.line - 1)
예제 #48
0
class ConcordanceSearchView(object):
    _BACKGROUND_COLOUR = '#FFF'  #white

    #Colour of highlighted results
    _HIGHLIGHT_WORD_COLOUR = '#F00'  #red
    _HIGHLIGHT_WORD_TAG = 'HL_WRD_TAG'

    _HIGHLIGHT_LABEL_COLOUR = '#C0C0C0'  # dark grey
    _HIGHLIGHT_LABEL_TAG = 'HL_LBL_TAG'

    #Percentage of text left of the scrollbar position
    _FRACTION_LEFT_TEXT = 0.30

    def __init__(self):
        self.queue = q.Queue()
        self.model = ConcordanceSearchModel(self.queue)
        self.top = Tk()
        self._init_top(self.top)
        self._init_menubar()
        self._init_widgets(self.top)
        self.load_corpus(self.model.DEFAULT_CORPUS)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def _init_top(self, top):
        top.geometry('950x680+50+50')
        top.title('NLTK Concordance Search')
        top.bind('<Control-q>', self.destroy)
        top.protocol('WM_DELETE_WINDOW', self.destroy)
        top.minsize(950, 680)

    def _init_widgets(self, parent):
        self.main_frame = Frame(
            parent,
            dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
        self._init_corpus_select(self.main_frame)
        self._init_query_box(self.main_frame)
        self._init_results_box(self.main_frame)
        self._init_paging(self.main_frame)
        self._init_status(self.main_frame)
        self.main_frame.pack(fill='both', expand=True)

    def _init_menubar(self):
        self._result_size = IntVar(self.top)
        self._cntx_bf_len = IntVar(self.top)
        self._cntx_af_len = IntVar(self.top)
        menubar = Menu(self.top)

        filemenu = Menu(menubar, tearoff=0, borderwidth=0)
        filemenu.add_command(label='Exit',
                             underline=1,
                             command=self.destroy,
                             accelerator='Ctrl-q')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        editmenu = Menu(menubar, tearoff=0)
        rescntmenu = Menu(editmenu, tearoff=0)
        rescntmenu.add_radiobutton(label='20',
                                   variable=self._result_size,
                                   underline=0,
                                   value=20,
                                   command=self.set_result_size)
        rescntmenu.add_radiobutton(label='50',
                                   variable=self._result_size,
                                   underline=0,
                                   value=50,
                                   command=self.set_result_size)
        rescntmenu.add_radiobutton(label='100',
                                   variable=self._result_size,
                                   underline=0,
                                   value=100,
                                   command=self.set_result_size)
        rescntmenu.invoke(1)
        editmenu.add_cascade(label='Result Count',
                             underline=0,
                             menu=rescntmenu)

        cntxmenu = Menu(editmenu, tearoff=0)
        cntxbfmenu = Menu(cntxmenu, tearoff=0)
        cntxbfmenu.add_radiobutton(label='60 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0,
                                   value=60,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.add_radiobutton(label='80 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0,
                                   value=80,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.add_radiobutton(label='100 characters',
                                   variable=self._cntx_bf_len,
                                   underline=0,
                                   value=100,
                                   command=self.set_cntx_bf_len)
        cntxbfmenu.invoke(1)
        cntxmenu.add_cascade(label='Before', underline=0, menu=cntxbfmenu)

        cntxafmenu = Menu(cntxmenu, tearoff=0)
        cntxafmenu.add_radiobutton(label='70 characters',
                                   variable=self._cntx_af_len,
                                   underline=0,
                                   value=70,
                                   command=self.set_cntx_af_len)
        cntxafmenu.add_radiobutton(label='90 characters',
                                   variable=self._cntx_af_len,
                                   underline=0,
                                   value=90,
                                   command=self.set_cntx_af_len)
        cntxafmenu.add_radiobutton(label='110 characters',
                                   variable=self._cntx_af_len,
                                   underline=0,
                                   value=110,
                                   command=self.set_cntx_af_len)
        cntxafmenu.invoke(1)
        cntxmenu.add_cascade(label='After', underline=0, menu=cntxafmenu)

        editmenu.add_cascade(label='Context', underline=0, menu=cntxmenu)

        menubar.add_cascade(label='Edit', underline=0, menu=editmenu)

        self.top.config(menu=menubar)

    def set_result_size(self, **kwargs):
        self.model.result_count = self._result_size.get()

    def set_cntx_af_len(self, **kwargs):
        self._char_after = self._cntx_af_len.get()

    def set_cntx_bf_len(self, **kwargs):
        self._char_before = self._cntx_bf_len.get()

    def _init_corpus_select(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.var = StringVar(innerframe)
        self.var.set(self.model.DEFAULT_CORPUS)
        Label(innerframe,
              justify=LEFT,
              text=' Corpus: ',
              background=self._BACKGROUND_COLOUR,
              padx=2,
              pady=1,
              border=0).pack(side='left')

        other_corpora = list(self.model.CORPORA.keys()).remove(
            self.model.DEFAULT_CORPUS)
        om = OptionMenu(innerframe,
                        self.var,
                        self.model.DEFAULT_CORPUS,
                        command=self.corpus_selected,
                        *self.model.non_default_corpora())
        om['borderwidth'] = 0
        om['highlightthickness'] = 1
        om.pack(side='left')
        innerframe.pack(side='top', fill='x', anchor='n')

    def _init_status(self, parent):
        self.status = Label(parent,
                            justify=LEFT,
                            relief=SUNKEN,
                            background=self._BACKGROUND_COLOUR,
                            border=0,
                            padx=1,
                            pady=0)
        self.status.pack(side='top', anchor='sw')

    def _init_query_box(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        another = Frame(innerframe, background=self._BACKGROUND_COLOUR)
        self.query_box = Entry(another, width=60)
        self.query_box.pack(side='left', fill='x', pady=25, anchor='center')
        self.search_button = Button(another,
                                    text='Search',
                                    command=self.search,
                                    borderwidth=1,
                                    highlightthickness=1)
        self.search_button.pack(side='left',
                                fill='x',
                                pady=25,
                                anchor='center')
        self.query_box.bind('<KeyPress-Return>',
                            self.search_enter_keypress_handler)
        another.pack()
        innerframe.pack(side='top', fill='x', anchor='n')

    def search_enter_keypress_handler(self, *event):
        self.search()

    def _init_results_box(self, parent):
        innerframe = Frame(parent)
        i1 = Frame(innerframe)
        i2 = Frame(innerframe)
        vscrollbar = Scrollbar(i1, borderwidth=1)
        hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
        self.results_box = Text(i1,
                                font=Font(family='courier', size='16'),
                                state='disabled',
                                borderwidth=1,
                                yscrollcommand=vscrollbar.set,
                                xscrollcommand=hscrollbar.set,
                                wrap='none',
                                width='40',
                                height='20',
                                exportselection=1)
        self.results_box.pack(side='left', fill='both', expand=True)
        self.results_box.tag_config(self._HIGHLIGHT_WORD_TAG,
                                    foreground=self._HIGHLIGHT_WORD_COLOUR)
        self.results_box.tag_config(self._HIGHLIGHT_LABEL_TAG,
                                    foreground=self._HIGHLIGHT_LABEL_COLOUR)
        vscrollbar.pack(side='left', fill='y', anchor='e')
        vscrollbar.config(command=self.results_box.yview)
        hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
        hscrollbar.config(command=self.results_box.xview)
        #there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
        Label(i2, text='   ',
              background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
        i1.pack(side='top', fill='both', expand=True, anchor='n')
        i2.pack(side='bottom', fill='x', anchor='s')
        innerframe.pack(side='top', fill='both', expand=True)

    def _init_paging(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.prev = prev = Button(innerframe,
                                  text='Previous',
                                  command=self.previous,
                                  width='10',
                                  borderwidth=1,
                                  highlightthickness=1,
                                  state='disabled')
        prev.pack(side='left', anchor='center')
        self.next = next = Button(innerframe,
                                  text='Next',
                                  command=self.__next__,
                                  width='10',
                                  borderwidth=1,
                                  highlightthickness=1,
                                  state='disabled')
        next.pack(side='right', anchor='center')
        innerframe.pack(side='top', fill='y')
        self.current_page = 0

    def previous(self):
        self.clear_results_box()
        self.freeze_editable()
        self.model.prev(self.current_page - 1)

    def __next__(self):
        self.clear_results_box()
        self.freeze_editable()
        self.model.next(self.current_page + 1)

    def about(self, *e):
        ABOUT = ("NLTK Concordance Search Demo\n")
        TITLE = 'About: NLTK Concordance Search Demo'
        try:
            from six.moves.tkinter_messagebox import Message
            Message(message=ABOUT, title=TITLE, parent=self.main_frame).show()
        except:
            ShowText(self.top, TITLE, ABOUT)

    def _bind_event_handlers(self):
        self.top.bind(CORPUS_LOADED_EVENT, self.handle_corpus_loaded)
        self.top.bind(SEARCH_TERMINATED_EVENT, self.handle_search_terminated)
        self.top.bind(SEARCH_ERROR_EVENT, self.handle_search_error)
        self.top.bind(ERROR_LOADING_CORPUS_EVENT,
                      self.handle_error_loading_corpus)

    def _poll(self):
        try:
            event = self.queue.get(block=False)
        except q.Empty:
            pass
        else:
            if event == CORPUS_LOADED_EVENT:
                self.handle_corpus_loaded(event)
            elif event == SEARCH_TERMINATED_EVENT:
                self.handle_search_terminated(event)
            elif event == SEARCH_ERROR_EVENT:
                self.handle_search_error(event)
            elif event == ERROR_LOADING_CORPUS_EVENT:
                self.handle_error_loading_corpus(event)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def handle_error_loading_corpus(self, event):
        self.status['text'] = 'Error in loading ' + self.var.get()
        self.unfreeze_editable()
        self.clear_all()
        self.freeze_editable()

    def handle_corpus_loaded(self, event):
        self.status['text'] = self.var.get() + ' is loaded'
        self.unfreeze_editable()
        self.clear_all()
        self.query_box.focus_set()

    def handle_search_terminated(self, event):
        #todo: refactor the model such that it is less state sensitive
        results = self.model.get_results()
        self.write_results(results)
        self.status['text'] = ''
        if len(results) == 0:
            self.status['text'] = 'No results found for ' + self.model.query
        else:
            self.current_page = self.model.last_requested_page
        self.unfreeze_editable()
        self.results_box.xview_moveto(self._FRACTION_LEFT_TEXT)

    def handle_search_error(self, event):
        self.status['text'] = 'Error in query ' + self.model.query
        self.unfreeze_editable()

    def corpus_selected(self, *args):
        new_selection = self.var.get()
        self.load_corpus(new_selection)

    def load_corpus(self, selection):
        if self.model.selected_corpus != selection:
            self.status['text'] = 'Loading ' + selection + '...'
            self.freeze_editable()
            self.model.load_corpus(selection)

    def search(self):
        self.current_page = 0
        self.clear_results_box()
        self.model.reset_results()
        query = self.query_box.get()
        if (len(query.strip()) == 0): return
        self.status['text'] = 'Searching for ' + query
        self.freeze_editable()
        self.model.search(
            query,
            self.current_page + 1,
        )

    def write_results(self, results):
        self.results_box['state'] = 'normal'
        row = 1
        for each in results:
            sent, pos1, pos2 = each[0].strip(), each[1], each[2]
            if len(sent) != 0:
                if (pos1 < self._char_before):
                    sent, pos1, pos2 = self.pad(sent, pos1, pos2)
                sentence = sent[pos1 - self._char_before:pos1 +
                                self._char_after]
                if not row == len(results):
                    sentence += '\n'
                self.results_box.insert(str(row) + '.0', sentence)
                word_markers, label_markers = self.words_and_labels(
                    sent, pos1, pos2)
                for marker in word_markers:
                    self.results_box.tag_add(self._HIGHLIGHT_WORD_TAG,
                                             str(row) + '.' + str(marker[0]),
                                             str(row) + '.' + str(marker[1]))
                for marker in label_markers:
                    self.results_box.tag_add(self._HIGHLIGHT_LABEL_TAG,
                                             str(row) + '.' + str(marker[0]),
                                             str(row) + '.' + str(marker[1]))
                row += 1
        self.results_box['state'] = 'disabled'

    def words_and_labels(self, sentence, pos1, pos2):
        search_exp = sentence[pos1:pos2]
        words, labels = [], []
        labeled_words = search_exp.split(' ')
        index = 0
        for each in labeled_words:
            if each == '':
                index += 1
            else:
                word, label = each.split('/')
                words.append((self._char_before + index,
                              self._char_before + index + len(word)))
                index += len(word) + 1
                labels.append((self._char_before + index,
                               self._char_before + index + len(label)))
                index += len(label)
            index += 1
        return words, labels

    def pad(self, sent, hstart, hend):
        if hstart >= self._char_before:
            return sent, hstart, hend
        d = self._char_before - hstart
        sent = ''.join([' '] * d) + sent
        return sent, hstart + d, hend + d

    def destroy(self, *e):
        if self.top is None: return
        self.top.after_cancel(self.after)
        self.top.destroy()
        self.top = None

    def clear_all(self):
        self.query_box.delete(0, END)
        self.model.reset_query()
        self.clear_results_box()

    def clear_results_box(self):
        self.results_box['state'] = 'normal'
        self.results_box.delete("1.0", END)
        self.results_box['state'] = 'disabled'

    def freeze_editable(self):
        self.query_box['state'] = 'disabled'
        self.search_button['state'] = 'disabled'
        self.prev['state'] = 'disabled'
        self.next['state'] = 'disabled'

    def unfreeze_editable(self):
        self.query_box['state'] = 'normal'
        self.search_button['state'] = 'normal'
        self.set_paging_button_states()

    def set_paging_button_states(self):
        if self.current_page == 0 or self.current_page == 1:
            self.prev['state'] = 'disabled'
        else:
            self.prev['state'] = 'normal'
        if self.model.has_more_pages(self.current_page):
            self.next['state'] = 'normal'
        else:
            self.next['state'] = 'disabled'

    def fire_event(self, event):
        #Firing an event so that rendering of widgets happen in the mainloop thread
        self.top.event_generate(event, when='tail')

    def mainloop(self, *args, **kwargs):
        if in_idle(): return
        self.top.mainloop(*args, **kwargs)
class CollocationsView:
    _BACKGROUND_COLOUR='#FFF' #white

    def __init__(self):
        self.queue = q.Queue()
        self.model = CollocationsModel(self.queue)
        self.top = Tk()
        self._init_top(self.top)
        self._init_menubar()
        self._init_widgets(self.top)
        self.load_corpus(self.model.DEFAULT_CORPUS)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def _init_top(self, top):
        top.geometry('550x650+50+50')
        top.title('NLTK Collocations List')
        top.bind('<Control-q>', self.destroy)
        top.protocol('WM_DELETE_WINDOW', self.destroy)
        top.minsize(550,650)

    def _init_widgets(self, parent):
        self.main_frame = Frame(parent, dict(background=self._BACKGROUND_COLOUR, padx=1, pady=1, border=1))
        self._init_corpus_select(self.main_frame)
        self._init_results_box(self.main_frame)
        self._init_paging(self.main_frame)
        self._init_status(self.main_frame)
        self.main_frame.pack(fill='both', expand=True)

    def _init_corpus_select(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.var = StringVar(innerframe)
        self.var.set(self.model.DEFAULT_CORPUS)
        Label(innerframe, justify=LEFT, text=' Corpus: ', background=self._BACKGROUND_COLOUR, padx = 2, pady = 1, border = 0).pack(side='left')

        other_corpora = list(self.model.CORPORA.keys()).remove(self.model.DEFAULT_CORPUS)
        om = OptionMenu(innerframe, self.var, self.model.DEFAULT_CORPUS, command=self.corpus_selected, *self.model.non_default_corpora())
        om['borderwidth'] = 0
        om['highlightthickness'] = 1
        om.pack(side='left')
        innerframe.pack(side='top', fill='x', anchor='n')

    def _init_status(self, parent):
        self.status = Label(parent, justify=LEFT, relief=SUNKEN, background=self._BACKGROUND_COLOUR, border=0, padx = 1, pady = 0)
        self.status.pack(side='top', anchor='sw')

    def _init_menubar(self):
        self._result_size = IntVar(self.top)
        menubar = Menu(self.top)

        filemenu = Menu(menubar, tearoff=0, borderwidth=0)
        filemenu.add_command(label='Exit', underline=1,
                   command=self.destroy, accelerator='Ctrl-q')
        menubar.add_cascade(label='File', underline=0, menu=filemenu)

        editmenu = Menu(menubar, tearoff=0)
        rescntmenu = Menu(editmenu, tearoff=0)
        rescntmenu.add_radiobutton(label='20', variable=self._result_size,
                     underline=0, value=20, command=self.set_result_size)
        rescntmenu.add_radiobutton(label='50', variable=self._result_size,
                     underline=0, value=50, command=self.set_result_size)
        rescntmenu.add_radiobutton(label='100', variable=self._result_size,
                     underline=0, value=100, command=self.set_result_size)
        rescntmenu.invoke(1)
        editmenu.add_cascade(label='Result Count', underline=0, menu=rescntmenu)

        menubar.add_cascade(label='Edit', underline=0, menu=editmenu)
        self.top.config(menu=menubar)

    def set_result_size(self, **kwargs):
        self.model.result_count = self._result_size.get()

    def _init_results_box(self, parent):
        innerframe = Frame(parent)
        i1 = Frame(innerframe)
        i2 = Frame(innerframe)
        vscrollbar = Scrollbar(i1, borderwidth=1)
        hscrollbar = Scrollbar(i2, borderwidth=1, orient='horiz')
        self.results_box = Text(i1,
                    font=Font(family='courier', size='16'),
                    state='disabled', borderwidth=1,
                    yscrollcommand=vscrollbar.set,
                    xscrollcommand=hscrollbar.set, wrap='none', width='40', height = '20', exportselection=1)
        self.results_box.pack(side='left', fill='both', expand=True)
        vscrollbar.pack(side='left', fill='y', anchor='e')
        vscrollbar.config(command=self.results_box.yview)
        hscrollbar.pack(side='left', fill='x', expand=True, anchor='w')
        hscrollbar.config(command=self.results_box.xview)
        #there is no other way of avoiding the overlap of scrollbars while using pack layout manager!!!
        Label(i2, text='   ', background=self._BACKGROUND_COLOUR).pack(side='left', anchor='e')
        i1.pack(side='top', fill='both', expand=True, anchor='n')
        i2.pack(side='bottom', fill='x', anchor='s')
        innerframe.pack(side='top', fill='both', expand=True)

    def _init_paging(self, parent):
        innerframe = Frame(parent, background=self._BACKGROUND_COLOUR)
        self.prev = prev = Button(innerframe, text='Previous', command=self.previous, width='10', borderwidth=1, highlightthickness=1, state='disabled')
        prev.pack(side='left', anchor='center')
        self.next = next = Button(innerframe, text='Next', command=self.__next__, width='10', borderwidth=1, highlightthickness=1, state='disabled')
        next.pack(side='right', anchor='center')
        innerframe.pack(side='top', fill='y')
        self.reset_current_page()

    def reset_current_page(self):
        self.current_page = -1

    def _poll(self):
        try:
            event = self.queue.get(block=False)
        except q.Empty:
            pass
        else:
            if event == CORPUS_LOADED_EVENT:
                self.handle_corpus_loaded(event)
            elif event == ERROR_LOADING_CORPUS_EVENT:
                self.handle_error_loading_corpus(event)
        self.after = self.top.after(POLL_INTERVAL, self._poll)

    def handle_error_loading_corpus(self, event):
        self.status['text'] = 'Error in loading ' + self.var.get()
        self.unfreeze_editable()
        self.clear_results_box()
        self.freeze_editable()
        self.reset_current_page()

    def handle_corpus_loaded(self, event):
        self.status['text'] = self.var.get() + ' is loaded'
        self.unfreeze_editable()
        self.clear_results_box()
        self.reset_current_page()
        #self.next()
        collocations = self.model.next(self.current_page + 1)
        self.write_results(collocations)
        self.current_page += 1

    def corpus_selected(self, *args):
        new_selection = self.var.get()
        self.load_corpus(new_selection)

    def previous(self):
        self.freeze_editable()
        collocations = self.model.prev(self.current_page - 1)
        self.current_page= self.current_page - 1
        self.clear_results_box()
        self.write_results(collocations)
        self.unfreeze_editable()

    def __next__(self):
        self.freeze_editable()
        collocations = self.model.next(self.current_page + 1)
        self.clear_results_box()
        self.write_results(collocations)
        self.current_page += 1
        self.unfreeze_editable()

    def load_corpus(self, selection):
        if self.model.selected_corpus != selection:
            self.status['text'] = 'Loading ' + selection + '...'
            self.freeze_editable()
            self.model.load_corpus(selection)

    def freeze_editable(self):
        self.prev['state'] = 'disabled'
        self.next['state'] = 'disabled'

    def clear_results_box(self):
        self.results_box['state'] = 'normal'
        self.results_box.delete("1.0", END)
        self.results_box['state'] = 'disabled'

    def fire_event(self, event):
        #Firing an event so that rendering of widgets happen in the mainloop thread
        self.top.event_generate(event, when='tail')

    def destroy(self, *e):
        if self.top is None: return
        self.top.after_cancel(self.after)
        self.top.destroy()
        self.top = None

    def mainloop(self, *args, **kwargs):
        if in_idle(): return
        self.top.mainloop(*args, **kwargs)

    def unfreeze_editable(self):
        self.set_paging_button_states()

    def set_paging_button_states(self):
        if self.current_page == -1 or self.current_page == 0:
            self.prev['state'] = 'disabled'
        else:
            self.prev['state'] = 'normal'
        if self.model.is_last_page(self.current_page):
            self.next['state'] = 'disabled'
        else:
            self.next['state'] = 'normal'

    def write_results(self, results):
        self.results_box['state'] = 'normal'
        row = 1
        for each in results:
            self.results_box.insert(str(row) + '.0', each[0] + " " + each[1] + "\n")
            row += 1
        self.results_box['state'] = 'disabled'