50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# Copyright 2015 Canonical, Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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""" View policy
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Contains some default key navigations
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"""
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from urwid import Overlay, WidgetWrap
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class BaseView(WidgetWrap):
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def show_overlay(self, overlay_widget, **kw):
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self.orig_w = self._w
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args = dict(
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align='center',
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width=('relative', 60),
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min_width=80,
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valign='middle',
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height='pack'
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)
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args.update(kw)
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self._w = Overlay(top_w=overlay_widget, bottom_w=self._w, **args)
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def remove_overlay(self):
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self._w = self.orig_w
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self.orig_w = None
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def keypress(self, size, key):
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if key in ['ctrl x']:
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self.controller.signal.emit_signal('control-x-quit')
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return None
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key = super().keypress(size, key)
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if key == 'esc':
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self.controller.cancel()
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return None
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return key
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