widgets.py 文件源码

def __init__(self, data, field_labels, btn_label, callbacks):
        self.app = data["app"]
        self.error = False
        self.fields, self.callbacks = [], callbacks
        for label in field_labels:
            self.fields.append(InputField(label, next_callback=self.next))
        input_fields = urwid.Pile(self.fields)
        self.message_field = urwid.Text('')
        error_row = urwid.Columns([(17, urwid.Text('')), self.message_field])
        buttons = [TextButton(btn_label, on_press=self.next)]

        if callbacks['back']:
            buttons.insert(0, TextButton('< Back', align='left', on_press=callbacks['back']))
        footer = urwid.AttrMap(urwid.Columns(buttons), 'button')

        card = Card(urwid.Pile(
            [data["content"], input_fields, error_row]), footer=footer)
        urwid.WidgetWrap.__init__(self, card)