interfaces.py 文件源码

def __init__(self, xface):
        self.xface = xface
        if self.xface.is_installed():
            version_string = xface.installed_version()
            if not version_string:
                version_string = 'unknown'

            if version_string != xface.expectedversion:
                version_string = '<span style="color:red">%s</span>' % version_string

        self.maintext = ipy.HTML(
                ('<span class="nbv-table-row nbv-width-med nbv-monospace">'
                 '           {xface.packagename}</span> '
                 '<span class="nbv-table-row nbv-monospace nbv-width-sm">'
                 '                {localversion}</span> '
                 '<span class="nbv-table-row nbv-monospace nbv-width-sm">'
                 '                {xface.expectedversion}</span>'
                 '<span class="nbv-width-sm nbv-table-row">&nbsp;</span>'  # empty space
                 ).format(xface=xface,
                            localversion=(version_string if self.xface.is_installed()
                                                          else MISSING)))

        if xface.required:
            self.selector = ipy.ToggleButtons(options=['locally'])
        elif not xface.is_installed():
            self.selector = ipy.ToggleButtons(options=['in docker'],
                                              button_style='warning')
        else:
            self.selector = ipy.ToggleButtons(options=['locally', 'in docker'],
                                              value='in docker' if xface.force_remote else 'locally',
                                              button_style='info')
            self.selector.observe(self._toggle, 'value')

        self.selector.add_class('nbv-width-lg')
        self.selector.add_class("nbv-table-row")

        children = [self.maintext, self.selector]

        if not self.xface.required and self.xface.is_installed():
            self.save_button = ipy.Button(description='Make default')
            self.save_button.on_click(self.save_selection)
            self.save_button.add_class('nbv-table-row')
            children.append(self.save_button)

        super().__init__(children=children,
                         layout=ipy.Layout(width='100%', align_items='flex-end'))