68c51ffdb7
Remove the contextlib pipe close feature -- file descriptors are closed on program exit anyway. Letting that happen normally actually makes exiting with CTRL-C nicer (fewer race conditions). Map "CTRL-Q" to the quit command, but pop up a yes/no dialog. Refactor the MessageDialog into a ButtonDialog base class that can serve MessageDialog and YesNoDialog. Add global help text that is prepended to each screen's help text to deal with the growing number of global commands. Change-Id: I455344cb20fb19032a3964d602fc886e19f256e5
88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
# Copyright 2014 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import urwid
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GLOBAL_HELP = """\
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Global Keys
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===========
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<F1> Help
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<ESC> Back to previous screen
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<CTRL-Q> Quit Gertty
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"""
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class TextButton(urwid.Button):
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def selectable(self):
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return True
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def __init__(self, text, on_press=None, user_data=None):
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super(TextButton, self).__init__('', on_press=on_press, user_data=user_data)
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text = urwid.Text(text)
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self._w = urwid.AttrMap(text, None, focus_map='reversed')
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class FixedButton(urwid.Button):
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def sizing(self):
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return frozenset([urwid.FIXED])
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def pack(self, size, focus=False):
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return (len(self.get_label())+4, 1)
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class TableColumn(urwid.Pile):
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def pack(self, size, focus=False):
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mx = max([len(i[0].text) for i in self.contents])
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return (mx+2, len(self.contents))
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class Table(urwid.WidgetWrap):
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def __init__(self, headers=[]):
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super(Table, self).__init__(
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urwid.Columns([('pack', TableColumn([('pack', w)])) for w in headers]))
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def addRow(self, cells=[]):
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for i, widget in enumerate(cells):
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self._w.contents[i][0].contents.append((widget, ('pack', None)))
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class ButtonDialog(urwid.WidgetWrap):
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def __init__(self, title, message, buttons=[]):
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button_widgets = []
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for button in buttons:
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button_widgets.append(('pack', button))
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button_columns = urwid.Columns(button_widgets, dividechars=2)
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rows = []
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rows.append(urwid.Text(message))
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rows.append(urwid.Divider())
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rows.append(button_columns)
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pile = urwid.Pile(rows)
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fill = urwid.Filler(pile, valign='top')
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super(ButtonDialog, self).__init__(urwid.LineBox(fill, title))
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class MessageDialog(ButtonDialog):
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signals = ['close']
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def __init__(self, title, message):
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ok_button = FixedButton('OK')
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urwid.connect_signal(ok_button, 'click',
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lambda button:self._emit('close'))
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super(MessageDialog, self).__init__(title, message, buttons=[ok_button])
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class YesNoDialog(ButtonDialog):
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signals = ['yes', 'no']
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def __init__(self, title, message):
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yes_button = FixedButton('Yes')
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no_button = FixedButton('No')
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urwid.connect_signal(yes_button, 'click',
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lambda button:self._emit('yes'))
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urwid.connect_signal(no_button, 'click',
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lambda button:self._emit('no'))
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super(YesNoDialog, self).__init__(title, message, buttons=[yes_button,
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no_button])
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