Python Tkinter.TclError() Examples

def add_all(self, event):
        if self.frame.current_selection is not None:
            start = self.frame.charindex2position(self.frame.current_selection.lb)
            end = self.frame.charindex2position(self.frame.current_selection.ub)
        else:
            start, end = ("sel.first", "sel.last")
        try:
            target = re.escape(self.frame.text.get(start, end).strip())
            pattern = (u"\\b" if target[0].isalnum() else u"((?<=\\s)|(?<=^))") + target + (u"\\b" if target[-1].isalnum() else u"(?=\\s|$)")
            regex = re.compile(pattern, re.U + re.M)
            for match in regex.finditer(self.frame.doc.content):
                cur_start, cur_end = self.frame.charindex2position(match.start()), self.frame.charindex2position(match.end())
                if Tag(self.type, match.start(), match.end()) not in self.frame.current_annotations:
                    self.frame.wish_to_add = [self.type, cur_start, cur_end]
                    self.frame.add_annotation(None, remove_focus=False)
        except tkinter.TclError:
            raise
        self.frame.type_combos[self.level].current(0)
        self.frame.wish_to_add = None
        self.frame.current_selection = None
        self.frame.current_type_hierarchy_level = 0
        self.frame.update_level()
        self.frame.text.tag_remove("BOLD",  "1.0", 'end') 

def test_theme_use(self):
        self.assertRaises(Tkinter.TclError, self.style.theme_use,
            'nonexistingname')

        curr_theme = self.style.theme_use()
        new_theme = None
        for theme in self.style.theme_names():
            if theme != curr_theme:
                new_theme = theme
                self.style.theme_use(theme)
                break
        else:
            # just one theme available, can't go on with tests
            return

        self.assertFalse(curr_theme == new_theme)
        self.assertFalse(new_theme != self.style.theme_use())

        self.style.theme_use(curr_theme) 

def test_column(self):
        # return a dict with all options/values
        self.assertIsInstance(self.tv.column('#0'), dict)
        # return a single value of the given option
        if self.wantobjects:
            self.assertIsInstance(self.tv.column('#0', width=None), int)
        # set a new value for an option
        self.tv.column('#0', width=10)
        # testing new way to get option value
        self.assertEqual(self.tv.column('#0', 'width'),
                         10 if self.wantobjects else '10')
        self.assertEqual(self.tv.column('#0', width=None),
                         10 if self.wantobjects else '10')
        # check read-only option
        self.assertRaises(tkinter.TclError, self.tv.column, '#0', id='X')

        self.assertRaises(tkinter.TclError, self.tv.column, 'invalid')
        invalid_kws = [
            {'unknown_option': 'some value'},  {'stretch': 'wrong'},
            {'anchor': 'wrong'}, {'width': 'wrong'}, {'minwidth': 'wrong'}
        ]
        for kw in invalid_kws:
            self.assertRaises(tkinter.TclError, self.tv.column, '#0',
                **kw) 

def blit(photoimage, aggimage, bbox=None, colormode=1):
    tk = photoimage.tk

    if bbox is not None:
        bbox_array = bbox.__array__()
    else:
        bbox_array = None
    try:
        tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox_array))
    except Tk.TclError:
        try:
            try:
                _tkagg.tkinit(tk.interpaddr(), 1)
            except AttributeError:
                _tkagg.tkinit(id(tk), 0)
            tk.call("PyAggImagePhoto", photoimage, id(aggimage), colormode, id(bbox_array))
        except (ImportError, AttributeError, Tk.TclError):
            raise 

def test_delete(self):
        self.assertRaises(tkinter.TclError, self.tv.delete, '#0')

        item_id = self.tv.insert('', 'end')
        item2 = self.tv.insert(item_id, 'end')
        self.assertEqual(self.tv.get_children(), (item_id, ))
        self.assertEqual(self.tv.get_children(item_id), (item2, ))

        self.tv.delete(item_id)
        self.assertFalse(self.tv.get_children())

        # reattach should fail
        self.assertRaises(tkinter.TclError,
            self.tv.reattach, item_id, '', 'end')

        # test multiple item delete
        item1 = self.tv.insert('', 'end')
        item2 = self.tv.insert('', 'end')
        self.assertEqual(self.tv.get_children(), (item1, item2))

        self.tv.delete(item1, item2)
        self.assertFalse(self.tv.get_children()) 

def test_invoke(self):
        success = []
        def cb_test():
            success.append(1)
            return "cb test called"

        cbtn = ttk.Checkbutton(command=cb_test)
        # the variable automatically created by ttk.Checkbutton is actually
        # undefined till we invoke the Checkbutton
        self.assertEqual(cbtn.state(), ('alternate', ))
        self.assertRaises(Tkinter.TclError, cbtn.tk.globalgetvar,
            cbtn['variable'])

        res = cbtn.invoke()
        self.assertEqual(res, "cb test called")
        self.assertEqual(cbtn['onvalue'],
            cbtn.tk.globalgetvar(cbtn['variable']))
        self.assertTrue(success)

        cbtn['command'] = ''
        res = cbtn.invoke()
        self.assertEqual(res, '')
        self.assertFalse(len(success) > 1)
        self.assertEqual(cbtn['offvalue'],
            cbtn.tk.globalgetvar(cbtn['variable'])) 

def test_sashpos(self):
        self.assertRaises(tkinter.TclError, self.paned.sashpos, None)
        self.assertRaises(tkinter.TclError, self.paned.sashpos, '')
        self.assertRaises(tkinter.TclError, self.paned.sashpos, 0)

        child = ttk.Label(self.paned, text='a')
        self.paned.add(child, weight=1)
        self.assertRaises(tkinter.TclError, self.paned.sashpos, 0)
        child2 = ttk.Label(self.paned, text='b')
        self.paned.add(child2)
        self.assertRaises(tkinter.TclError, self.paned.sashpos, 1)

        self.paned.pack(expand=True, fill='both')
        self.paned.wait_visibility()

        curr_pos = self.paned.sashpos(0)
        self.paned.sashpos(0, 1000)
        self.assertNotEqual(curr_pos, self.paned.sashpos(0))
        self.assertIsInstance(self.paned.sashpos(0), int) 

def test_sashpos(self):
        self.assertRaises(Tkinter.TclError, self.paned.sashpos, None)
        self.assertRaises(Tkinter.TclError, self.paned.sashpos, '')
        self.assertRaises(Tkinter.TclError, self.paned.sashpos, 0)

        child = ttk.Label(self.paned, text='a')
        self.paned.add(child, weight=1)
        self.assertRaises(Tkinter.TclError, self.paned.sashpos, 0)
        child2 = ttk.Label(self.paned, text='b')
        self.paned.add(child2)
        self.assertRaises(Tkinter.TclError, self.paned.sashpos, 1)

        self.paned.pack(expand=True, fill='both')
        self.paned.wait_visibility()

        curr_pos = self.paned.sashpos(0)
        self.paned.sashpos(0, 1000)
        self.assertTrue(curr_pos != self.paned.sashpos(0))
        self.assertTrue(isinstance(self.paned.sashpos(0), int)) 

def test_invoke(self):
        success = []
        def cb_test():
            success.append(1)
            return "cb test called"

        cbtn = ttk.Checkbutton(self.root, command=cb_test)
        # the variable automatically created by ttk.Checkbutton is actually
        # undefined till we invoke the Checkbutton
        self.assertEqual(cbtn.state(), ('alternate', ))
        self.assertRaises(tkinter.TclError, cbtn.tk.globalgetvar,
            cbtn['variable'])

        res = cbtn.invoke()
        self.assertEqual(res, "cb test called")
        self.assertEqual(cbtn['onvalue'],
            cbtn.tk.globalgetvar(cbtn['variable']))
        self.assertTrue(success)

        cbtn['command'] = ''
        res = cbtn.invoke()
        self.assertFalse(str(res))
        self.assertLessEqual(len(success), 1)
        self.assertEqual(cbtn['offvalue'],
            cbtn.tk.globalgetvar(cbtn['variable'])) 

def test_delete(self):
        self.assertRaises(Tkinter.TclError, self.tv.delete, '#0')

        item_id = self.tv.insert('', 'end')
        item2 = self.tv.insert(item_id, 'end')
        self.assertEqual(self.tv.get_children(), (item_id, ))
        self.assertEqual(self.tv.get_children(item_id), (item2, ))

        self.tv.delete(item_id)
        self.assertFalse(self.tv.get_children())

        # reattach should fail
        self.assertRaises(Tkinter.TclError,
            self.tv.reattach, item_id, '', 'end')

        # test multiple item delete
        item1 = self.tv.insert('', 'end')
        item2 = self.tv.insert('', 'end')
        self.assertEqual(self.tv.get_children(), (item1, item2))

        self.tv.delete(item1, item2)
        self.assertFalse(self.tv.get_children()) 

def test_heading(self):
        # check a dict is returned
        self.assertTrue(isinstance(self.tv.heading('#0'), dict))

        # check a value is returned
        self.tv.heading('#0', text='hi')
        self.assertEqual(self.tv.heading('#0', 'text'), 'hi')
        self.assertEqual(self.tv.heading('#0', text=None), 'hi')

        # invalid option
        self.assertRaises(Tkinter.TclError, self.tv.heading, '#0',
            background=None)
        # invalid value
        self.assertRaises(Tkinter.TclError, self.tv.heading, '#0',
            anchor=1)

    # XXX skipping for now; should be fixed to work with newer ttk 

def test_layout(self):
        style = self.style
        self.assertRaises(tkinter.TclError, style.layout, 'NotALayout')
        tv_style = style.layout('Treeview')

        # "erase" Treeview layout
        style.layout('Treeview', '')
        self.assertEqual(style.layout('Treeview'),
            [('null', {'sticky': 'nswe'})]
        )

        # restore layout
        style.layout('Treeview', tv_style)
        self.assertEqual(style.layout('Treeview'), tv_style)

        # should return a list
        self.assertIsInstance(style.layout('TButton'), list)

        # correct layout, but "option" doesn't exist as option
        self.assertRaises(tkinter.TclError, style.layout, 'Treeview',
            [('name', {'option': 'inexistent'})]) 

def checkInvalidParam(self, widget, name, value, errmsg=None,
                          keep_orig=True):
        orig = widget[name]
        if errmsg is not None:
            errmsg = errmsg.format(value)
        with self.assertRaises(tkinter.TclError) as cm:
            widget[name] = value
        if errmsg is not None:
            self.assertEqual(str(cm.exception), errmsg)
        if keep_orig:
            self.assertEqual(widget[name], orig)
        else:
            widget[name] = orig
        with self.assertRaises(tkinter.TclError) as cm:
            widget.configure({name: value})
        if errmsg is not None:
            self.assertEqual(str(cm.exception), errmsg)
        if keep_orig:
            self.assertEqual(widget[name], orig)
        else:
            widget[name] = orig 

def testLoadTkFailure(self):
        old_display = None
        if sys.platform.startswith(('win', 'darwin', 'cygwin')):
            # no failure possible on windows?

            # XXX Maybe on tk older than 8.4.13 it would be possible,
            # see tkinter.h.
            return
        with test_support.EnvironmentVarGuard() as env:
            if 'DISPLAY' in os.environ:
                del env['DISPLAY']
                # on some platforms, deleting environment variables
                # doesn't actually carry through to the process level
                # because they don't support unsetenv
                # If that's the case, abort.
                display = os.popen('echo $DISPLAY').read().strip()
                if display:
                    return

            tcl = Tcl()
            self.assertRaises(TclError, tcl.winfo_geometry)
            self.assertRaises(TclError, tcl.loadtk) 

def test_search(self):
        text = self.text

        # pattern and index are obligatory arguments.
        self.assertRaises(Tkinter.TclError, text.search, None, '1.0')
        self.assertRaises(Tkinter.TclError, text.search, 'a', None)
        self.assertRaises(Tkinter.TclError, text.search, None, None)

        # Invalid text index.
        self.assertRaises(Tkinter.TclError, text.search, '', 0)

        # Check if we are getting the indices as strings -- you are likely
        # to get Tcl_Obj under Tk 8.5 if Tkinter doesn't convert it.
        text.insert('1.0', 'hi-test')
        self.assertEqual(text.search('-test', '1.0', 'end'), '1.2')
        self.assertEqual(text.search('test', '1.0', 'end'), '1.3') 

def showtip(self, text):
        "Display text in tooltip window"
        self.text = text
        if self.tipwindow or not self.text:
            return
        x, y, _, _ = self.widget.bbox("insert")
        x = x + self.widget.winfo_rootx() + 27
        y = y + self.widget.winfo_rooty()
        self.tipwindow = tw = Tk.Toplevel(self.widget)
        tw.wm_overrideredirect(1)
        tw.wm_geometry("+%d+%d" % (x, y))
        try:
            # For Mac OS
            tw.tk.call("::tk::unsupported::MacWindowStyle",
                       "style", tw._w,
                       "help", "noActivates")
        except Tk.TclError:
            pass
        label = Tk.Label(tw, text=self.text, justify=Tk.LEFT,
                      background="#ffffe0", relief=Tk.SOLID, borderwidth=1,
                      )
        label.pack(ipadx=1) 

def test_column(self):
        # return a dict with all options/values
        self.assertTrue(isinstance(self.tv.column('#0'), dict))
        # return a single value of the given option
        self.assertTrue(isinstance(self.tv.column('#0', width=None), int))
        # set a new value for an option
        self.tv.column('#0', width=10)
        # testing new way to get option value
        self.assertEqual(self.tv.column('#0', 'width'), 10)
        self.assertEqual(self.tv.column('#0', width=None), 10)
        # check read-only option
        self.assertRaises(Tkinter.TclError, self.tv.column, '#0', id='X')

        self.assertRaises(Tkinter.TclError, self.tv.column, 'invalid')
        invalid_kws = [
            {'unknown_option': 'some value'},  {'stretch': 'wrong'},
            {'anchor': 'wrong'}, {'width': 'wrong'}, {'minwidth': 'wrong'}
        ]
        for kw in invalid_kws:
            self.assertRaises(Tkinter.TclError, self.tv.column, '#0',
                **kw) 

def test_heading(self):
        # check a dict is returned
        self.assertIsInstance(self.tv.heading('#0'), dict)

        # check a value is returned
        self.tv.heading('#0', text='hi')
        self.assertEqual(self.tv.heading('#0', 'text'), 'hi')
        self.assertEqual(self.tv.heading('#0', text=None), 'hi')

        # invalid option
        self.assertRaises(tkinter.TclError, self.tv.heading, '#0',
            background=None)
        # invalid value
        self.assertRaises(tkinter.TclError, self.tv.heading, '#0',
            anchor=1) 

def __init__(self, master, variable, default=None, *values, **kwargs):
        """Construct a themed OptionMenu widget with master as the parent,
        the resource textvariable set to variable, the initially selected
        value specified by the default parameter, the menu values given by
        *values and additional keywords.

        WIDGET-SPECIFIC OPTIONS

            style: stylename
                Menubutton style.
            direction: 'above', 'below', 'left', 'right', or 'flush'
                Menubutton direction.
            command: callback
                A callback that will be invoked after selecting an item.
        """
        kw = {'textvariable': variable, 'style': kwargs.pop('style', None),
              'direction': kwargs.pop('direction', None)}
        Menubutton.__init__(self, master, **kw)
        self['menu'] = Tkinter.Menu(self, tearoff=False)

        self._variable = variable
        self._callback = kwargs.pop('command', None)
        if kwargs:
            raise Tkinter.TclError('unknown option -%s' % (
                kwargs.iterkeys().next()))

        self.set_menu(default, *values) 

def _iscolorstring(self, color):
        """Check if the string color is a legal Tkinter color string.
        """
        try:
            rgb = self.cv.winfo_rgb(color)
            ok = True
        except TK.TclError:
            ok = False
        return ok 

def test_set(self):
        self.tv['columns'] = ['A', 'B']
        item = self.tv.insert('', 'end', values=['a', 'b'])
        self.assertEqual(self.tv.set(item), {'A': 'a', 'B': 'b'})

        self.tv.set(item, 'B', 'a')
        self.assertEqual(self.tv.item(item, values=None),
                         ('a', 'a') if self.wantobjects else 'a a')

        self.tv['columns'] = ['B']
        self.assertEqual(self.tv.set(item), {'B': 'a'})

        self.tv.set(item, 'B', 'b')
        self.assertEqual(self.tv.set(item, column='B'), 'b')
        self.assertEqual(self.tv.item(item, values=None),
                         ('b', 'a') if self.wantobjects else 'b a')

        self.tv.set(item, 'B', 123)
        self.assertEqual(self.tv.set(item, 'B'),
                         123 if self.wantobjects else '123')
        self.assertEqual(self.tv.item(item, values=None),
                         (123, 'a') if self.wantobjects else '123 a')
        self.assertEqual(self.tv.set(item),
                         {'B': 123} if self.wantobjects else {'B': '123'})

        # inexistent column
        self.assertRaises(tkinter.TclError, self.tv.set, item, 'A')
        self.assertRaises(tkinter.TclError, self.tv.set, item, 'A', 'b')

        # inexistent item
        self.assertRaises(tkinter.TclError, self.tv.set, 'notme') 

def test_tag_configure(self):
        # Just testing parameter passing for now
        self.assertRaises(TypeError, self.tv.tag_configure)
        self.assertRaises(tkinter.TclError, self.tv.tag_configure,
            'test', sky='blue')
        self.tv.tag_configure('test', foreground='blue')
        self.assertEqual(str(self.tv.tag_configure('test', 'foreground')),
            'blue')
        self.assertEqual(str(self.tv.tag_configure('test', foreground=None)),
            'blue')
        self.assertIsInstance(self.tv.tag_configure('test'), dict) 

def test_index(self):
        # item 'what' doesn't exist
        self.assertRaises(tkinter.TclError, self.tv.index, 'what')

        self.assertEqual(self.tv.index(''), 0)

        item1 = self.tv.insert('', 'end')
        item2 = self.tv.insert('', 'end')
        c1 = self.tv.insert(item1, 'end')
        c2 = self.tv.insert(item1, 'end')
        self.assertEqual(self.tv.index(item1), 0)
        self.assertEqual(self.tv.index(c1), 0)
        self.assertEqual(self.tv.index(c2), 1)
        self.assertEqual(self.tv.index(item2), 1)

        self.tv.move(item2, '', 0)
        self.assertEqual(self.tv.index(item2), 0)
        self.assertEqual(self.tv.index(item1), 1)

        # check that index still works even after its parent and siblings
        # have been detached
        self.tv.detach(item1)
        self.assertEqual(self.tv.index(c2), 1)
        self.tv.detach(c1)
        self.assertEqual(self.tv.index(c2), 0)

        # but it fails after item has been deleted
        self.tv.delete(item1)
        self.assertRaises(tkinter.TclError, self.tv.index, c2) 

def test_widget_destroy(self):
        var = tkinter.StringVar(self.root)
        optmenu = ttk.OptionMenu(self.root, var)
        name = var._name
        optmenu.update_idletasks()
        optmenu.destroy()
        self.assertEqual(optmenu.tk.globalgetvar(name), var.get())
        del var
        self.assertRaises(tkinter.TclError, optmenu.tk.globalgetvar, name) 

def handle_char(self, event):
        if self.adder is None:
            return
        if not self.adder.current_annotation:
            try:
                self.text.index("sel.first")
            except tkinter.TclError:
                return
        
        the_type = self.adder.type_from_letter(event.keysym)
        the_type = the_type or self.adder.type_from_letter(event.keysym.lower())
        if the_type is None:
            return
        if event.keysym.islower():
            fst = (self.charindex2position(self.adder.current_annotation.lb) if self.adder.current_annotation else self.text.index("sel.first"))
            lst = (self.charindex2position(self.adder.current_annotation.ub) if self.adder.current_annotation else self.text.index("sel.last"))
            self.wish_to_add = [self.adder.type_from_letter(event.keysym), fst, lst]
            self.add_annotation(event, remove_focus=False)
        else:
            if self.adder.current_annotation is not None:
                start = self.charindex2position(self.adder.current_annotation.lb)
                end = self.charindex2position(self.adder.current_annotation.ub)
            else:
                start, end = ("sel.first", "sel.last")
            try:
                for match in find_occurrences(self.text.get(start, end), self.doc.content, whole_word=self.whole_word):
                    cur_start, cur_end = self.charindex2position(match.start()), self.charindex2position(match.end())
                    if Tag(the_type, match.start(), match.end()) not in self.current_annotations:
                        self.wish_to_add = [the_type, cur_start, cur_end]
                        self.add_annotation(None, remove_focus=False)
            except tkinter.TclError:
                raise
            self.unselect() 

def test_initialization(self):
        self.assertRaises(tkinter.TclError,
            ttk.OptionMenu, self.root, self.textvar, invalid='thing')

        optmenu = ttk.OptionMenu(self.root, self.textvar, 'b', 'a', 'b')
        self.assertEqual(optmenu._variable.get(), 'b')

        self.assertTrue(optmenu['menu'])
        self.assertTrue(optmenu['textvariable'])

        optmenu.destroy() 

def test_widget_state(self):
        # XXX not sure about the portability of all these tests
        self.assertEqual(self.widget.state(), ())
        self.assertEqual(self.widget.instate(['!disabled']), True)

        # changing from !disabled to disabled
        self.assertEqual(self.widget.state(['disabled']), ('!disabled', ))
        # no state change
        self.assertEqual(self.widget.state(['disabled']), ())
        # change back to !disable but also active
        self.assertEqual(self.widget.state(['!disabled', 'active']),
            ('!active', 'disabled'))
        # no state changes, again
        self.assertEqual(self.widget.state(['!disabled', 'active']), ())
        self.assertEqual(self.widget.state(['active', '!disabled']), ())

        def test_cb(arg1, **kw):
            return arg1, kw
        self.assertEqual(self.widget.instate(['!disabled'],
            test_cb, "hi", **{"msg": "there"}),
            ('hi', {'msg': 'there'}))

        # attempt to set invalid statespec
        currstate = self.widget.state()
        self.assertRaises(tkinter.TclError, self.widget.instate,
            ['badstate'])
        self.assertRaises(tkinter.TclError, self.widget.instate,
            ['disabled', 'badstate'])
        # verify that widget didn't change its state
        self.assertEqual(currstate, self.widget.state())

        # ensuring that passing None as state doesn't modify current state
        self.widget.state(['active', '!disabled'])
        self.assertEqual(self.widget.state(), ('active', )) 

def setUpClass(cls):
        cls._old_support_default_root = tkinter._support_default_root
        destroy_default_root()
        tkinter.NoDefaultRoot()
        cls.root = tkinter.Tk()
        cls.wantobjects = cls.root.wantobjects()
        # De-maximize main window.
        # Some window managers can maximize new windows.
        cls.root.wm_state('normal')
        try:
            cls.root.wm_attributes('-zoomed', False)
        except tkinter.TclError:
            pass 

def test_focus(self):
        # nothing is focused right now
        self.assertEqual(self.tv.focus(), '')

        item1 = self.tv.insert('', 'end')
        self.tv.focus(item1)
        self.assertEqual(self.tv.focus(), item1)

        self.tv.delete(item1)
        self.assertEqual(self.tv.focus(), '')

        # try focusing inexistent item
        self.assertRaises(tkinter.TclError, self.tv.focus, 'hi') 

def test_widget_destroy(self):
        # automatically created variable
        x = ttk.LabeledScale(self.root)
        var = x._variable._name
        x.destroy()
        self.assertRaises(tkinter.TclError, x.tk.globalgetvar, var)

        # manually created variable
        myvar = tkinter.DoubleVar(self.root)
        name = myvar._name
        x = ttk.LabeledScale(self.root, variable=myvar)
        x.destroy()
        if self.wantobjects:
            self.assertEqual(x.tk.globalgetvar(name), myvar.get())
        else:
            self.assertEqual(float(x.tk.globalgetvar(name)), myvar.get())
        del myvar
        self.assertRaises(tkinter.TclError, x.tk.globalgetvar, name)

        # checking that the tracing callback is properly removed
        myvar = tkinter.IntVar(self.root)
        # LabeledScale will start tracing myvar
        x = ttk.LabeledScale(self.root, variable=myvar)
        x.destroy()
        # Unless the tracing callback was removed, creating a new
        # LabeledScale with the same var will cause an error now. This
        # happens because the variable will be set to (possibly) a new
        # value which causes the tracing callback to be called and then
        # it tries calling instance attributes not yet defined.
        ttk.LabeledScale(self.root, variable=myvar)
        if hasattr(sys, 'last_type'):
            self.assertNotEqual(sys.last_type, tkinter.TclError)