class DummySliders:

    def valueOut(self, name, value):

        pass

    def close(self):

        pass

    def reopen(self):

        pass

class SubScale(tk.Scale, Fadable):

    def __init__(self, master, *args, **kw):

        self.scale_var = kw.get('variable') or tk.DoubleVar()

        kw.update({

            'variable': self.scale_var,

            'from': 1,

            'to': 0,

            'showvalue': 0,

            'sliderlength': 15,

            'width': 40,

            'troughcolor': 'black',

            'bg': 'grey40',

            'highlightthickness': 1,

            'bd': 1,

            'highlightcolor': 'red',

            'highlightbackground': 'black',

            'activebackground': 'red'

        })

        tk.Scale.__init__(self, master, *args, **kw)

        Fadable.__init__(self, var=self.scale_var, wheel_step=0.05)

        self.draw_indicator_colors()

    def draw_indicator_colors(self):

        if self.scale_var.get() == 0:

            self['troughcolor'] = 'black'

        else:

            self['troughcolor'] = 'blue'

class SubmasterBox(tk.Frame):

    """

    this object owns the level of the submaster (the rdf graph is the

    real authority)

        row.pack(expand=1, fill=tk.BOTH)

        self.setup_key_nudgers(row)

        self.rows.append(row)

        return row

    def change_group(self, sub, row):

        """update this sub's group, and maybe other sub groups as needed, so

        this sub displays in this row"""

        group = row.subGroup

        self.graph.patchObject(context=self.session,

                               subject=sub,

                               predicate=L9['group'],

                               newObject=group)

    def highlight_row(self, row):

        row = self.rows[row]

        row['bg'] = 'red'

    def unhighlight_row(self, row):

        row = self.rows[row]

        row['bg'] = 'black'

    def get_levels(self):

    def get_output_settings(self, _graph=None):

        _graph = _graph or self.graph

        outputSettings = []

        for setting in _graph.objects(self.session, L9['subSetting']):

            effect = _graph.value(setting, L9['sub'])

            strength = _graph.value(setting, L9['level'])

            if strength:

                now = time.time()

                out, report = self.effectEval[effect].outputFromEffect(

                    [(L9['strength'], strength)],

                    songTime=now,

                    # should be counting from when you bumped up from 0

                    noteTime=now)

                outputSettings.append(out)

        return DeviceSettings.fromList(_graph, outputSettings)

    def save_current_stage(self, subname):

        log.info("saving current levels as %s", subname)

        with self.graph.currentState() as g:

            ds = self.get_output_settings(_graph=g)

        effect = L9['effect/%s' % subname]

        ctx = URIRef(showconfig.showUri() + '/effect/' + subname)