How to use the pudb.ui_tools.text_width function in pudb

for i in xrange(fullcols + bool(rem))]

            return make_canvas(text, attr, maxcol, apfx+"value")

        lprefix = len(self.prefix)

        if self.value_str is not None:
            if self.var_label is not None:
                if len(self.prefix) + text_width(self.var_label) > self.SIZE_LIMIT:
                    # label too long? generate separate value line
                    text = [self.prefix + self.var_label,
                            self.prefix+"  " + self.value_str]

                    attr = [
                        [(apfx+"label", lprefix+text_width(self.var_label))],
                        [(apfx+"value", lprefix+2+text_width(self.value_str))]
                        ]
                else:
                    text = [self.prefix + self.var_label + ": " + self.value_str]

                    attr = [[
                            (apfx+"label", lprefix+text_width(self.var_label)+2),
                            (apfx+"value", text_width(self.value_str)),
                            ]]
            else:
                text = [self.prefix + self.value_str]

                attr = [[
                        (apfx+"label", len(self.prefix)),
                        (apfx+"value", text_width(self.value_str)),
                        ]]
        else:

def _get_text(self, size):
        maxcol = size[0] - len(self.prefix)  # self.prefix is a padding
        var_label = self.var_label or ''
        value_str = self.value_str or ''
        alltext = var_label + ": " + value_str
        # The first line is not indented
        firstline = self.prefix + alltext[:maxcol]
        if not alltext[maxcol:]:
            return [firstline]
        fulllines, rest = divmod(text_width(alltext) - maxcol, maxcol - 2)
        restlines = [alltext[(maxcol - 2)*i + maxcol:(maxcol - 2)*i + 2*maxcol - 2]
            for i in xrange(fulllines + bool(rest))]
        return [firstline] + ["  " + self.prefix + i for i in restlines]

attr = [[
                            (apfx+"label", lprefix+text_width(self.var_label)+2),
                            (apfx+"value", text_width(self.value_str)),
                            ]]
            else:
                text = [self.prefix + self.value_str]

                attr = [[
                        (apfx+"label", len(self.prefix)),
                        (apfx+"value", text_width(self.value_str)),
                        ]]
        else:
            text = [self.prefix + self.var_label]

            attr = [[(apfx+"label", lprefix + text_width(self.var_label)), ]]

        # Ellipses to show text was cut off
        #encoding = urwid.util.detected_encoding

        if False:  # encoding[:3] == "UTF":
            # Unicode is supported, use single character ellipsis
            for i in xrange(len(text)):
                if len(text[i]) > maxcol:
                    text[i] = (unicode(text[i][:maxcol-1])  # noqa: F821
                            + ELLIPSIS + unicode(text[i][maxcol:]))  # noqa: F821
                    # XXX: This doesn't work.  It just gives a ?
                    # Strangely, the following does work (it gives the …
                    # three characters from the right):
                    #
                    # text[i] = (unicode(text[i][:maxcol-3])
                    # + unicode(u'…')) + unicode(text[i][maxcol-2:])

def render(self, size, focus=False):
        from pudb.ui_tools import make_canvas

        maxcol = size[0]
        if focus:
            apfx = "focused "+self.attr_prefix+" "
        else:
            apfx = self.attr_prefix+" "

        var_label = self.var_label or ''

        if self.wrap:
            text = self._get_text(size)

            extralabel_full, extralabel_rem = divmod(
                    text_width(var_label[maxcol:]), maxcol)
            totallen = sum([text_width(i) for i in text])
            labellen = (
                    len(self.prefix)  # Padding of first line

                    + (len(self.prefix) + 2)  # Padding of subsequent lines
                    * (extralabel_full + bool(extralabel_rem))

                    + text_width(var_label)

                    + 2  # for ": "
                    )

            _attr = [(apfx+"label", labellen), (apfx+"value", totallen - labellen)]
            from urwid.util import rle_subseg

            fullcols, rem = divmod(totallen, maxcol)

if False:  # encoding[:3] == "UTF":
            # Unicode is supported, use single character ellipsis
            for i in xrange(len(text)):
                if len(text[i]) > maxcol:
                    text[i] = (unicode(text[i][:maxcol-1])  # noqa: F821
                            + ELLIPSIS + unicode(text[i][maxcol:]))  # noqa: F821
                    # XXX: This doesn't work.  It just gives a ?
                    # Strangely, the following does work (it gives the …
                    # three characters from the right):
                    #
                    # text[i] = (unicode(text[i][:maxcol-3])
                    # + unicode(u'…')) + unicode(text[i][maxcol-2:])
        else:
            for i in xrange(len(text)):
                if text_width(text[i]) > maxcol:
                    text[i] = text[i][:maxcol-3] + "..."

        return make_canvas(text, attr, maxcol, apfx+"value")

from pudb.ui_tools import make_canvas

        maxcol = size[0]
        if focus:
            apfx = "focused "+self.attr_prefix+" "
        else:
            apfx = self.attr_prefix+" "

        var_label = self.var_label or ''

        if self.wrap:
            text = self._get_text(size)

            extralabel_full, extralabel_rem = divmod(
                    text_width(var_label[maxcol:]), maxcol)
            totallen = sum([text_width(i) for i in text])
            labellen = (
                    len(self.prefix)  # Padding of first line

                    + (len(self.prefix) + 2)  # Padding of subsequent lines
                    * (extralabel_full + bool(extralabel_rem))

                    + text_width(var_label)

                    + 2  # for ": "
                    )

            _attr = [(apfx+"label", labellen), (apfx+"value", totallen - labellen)]
            from urwid.util import rle_subseg

            fullcols, rem = divmod(totallen, maxcol)

var_label = self.var_label or ''

        if self.wrap:
            text = self._get_text(size)

            extralabel_full, extralabel_rem = divmod(
                    text_width(var_label[maxcol:]), maxcol)
            totallen = sum([text_width(i) for i in text])
            labellen = (
                    len(self.prefix)  # Padding of first line

                    + (len(self.prefix) + 2)  # Padding of subsequent lines
                    * (extralabel_full + bool(extralabel_rem))

                    + text_width(var_label)

                    + 2  # for ": "
                    )

            _attr = [(apfx+"label", labellen), (apfx+"value", totallen - labellen)]
            from urwid.util import rle_subseg

            fullcols, rem = divmod(totallen, maxcol)

            attr = [rle_subseg(_attr, i*maxcol, (i + 1)*maxcol)
                for i in xrange(fullcols + bool(rem))]

            return make_canvas(text, attr, maxcol, apfx+"value")

        lprefix = len(self.prefix)

def rows(self, size, focus=False):
        if self.wrap:
            return len(self._get_text(size))

        if (self.value_str is not None
                and self.var_label is not None
                and len(self.prefix) + text_width(self.var_label) > self.SIZE_LIMIT):
            return 2
        else:
            return 1