Current File : //usr/share/virt-manager/virtManager/mediacombo.py
#
# Copyright (C) 2014 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
#
import logging
from gi.repository import Gtk
from . import uiutil
from .baseclass import vmmGObjectUI
class vmmMediaCombo(vmmGObjectUI):
MEDIA_FLOPPY = "floppy"
MEDIA_CDROM = "cdrom"
OPTICAL_FIELDS = 4
(OPTICAL_DEV_PATH,
OPTICAL_LABEL,
OPTICAL_HAS_MEDIA,
OPTICAL_DEV_KEY) = range(OPTICAL_FIELDS)
def __init__(self, conn, builder, topwin, media_type):
vmmGObjectUI.__init__(self, None, None, builder=builder, topwin=topwin)
self.conn = conn
self.media_type = media_type
self.top_box = None
self.combo = None
self._warn_icon = None
self._populated = False
self._init_ui()
def _cleanup(self):
self.conn = None
self.top_box.destroy()
self.top_box = None
##########################
# Initialization methods #
##########################
def _init_ui(self):
self.top_box = Gtk.Box()
self.top_box.set_spacing(6)
self.top_box.set_orientation(Gtk.Orientation.HORIZONTAL)
self._warn_icon = Gtk.Image()
self._warn_icon.set_from_stock(
Gtk.STOCK_DIALOG_WARNING, Gtk.IconSize.MENU)
self.combo = Gtk.ComboBox()
self.top_box.add(self.combo)
self.top_box.add(self._warn_icon)
self.top_box.show_all()
# [Device path, pretty label, has_media?, device key]
fields = []
fields.insert(self.OPTICAL_DEV_PATH, str)
fields.insert(self.OPTICAL_LABEL, str)
fields.insert(self.OPTICAL_HAS_MEDIA, bool)
fields.insert(self.OPTICAL_DEV_KEY, str)
self.combo.set_model(Gtk.ListStore(*fields))
text = Gtk.CellRendererText()
self.combo.pack_start(text, True)
self.combo.add_attribute(text, 'text', self.OPTICAL_LABEL)
self.combo.get_accessible().set_name("physical-device-combo")
error = None
if not self.conn.is_nodedev_capable():
error = _("Libvirt version does not support media listing.")
self._warn_icon.set_tooltip_text(error)
self._warn_icon.set_visible(bool(error))
def _set_mediadev_default(self):
model = self.combo.get_model()
if len(model) != 0:
return
row = [None] * self.OPTICAL_FIELDS
row[self.OPTICAL_DEV_PATH] = None
row[self.OPTICAL_LABEL] = _("No device present")
row[self.OPTICAL_HAS_MEDIA] = False
row[self.OPTICAL_DEV_KEY] = None
model.append(row)
def _pretty_label(self, nodedev):
media_label = nodedev.xmlobj.media_label
if not nodedev.xmlobj.media_available:
media_label = _("No media detected")
elif not nodedev.xmlobj.media_label:
media_label = _("Media Unknown")
return "%s (%s)" % (media_label, nodedev.xmlobj.block)
def _mediadev_set_default_selection(self):
# Set the first active cdrom device as selected, otherwise none
widget = self.combo
model = widget.get_model()
idx = 0
active = widget.get_active()
if active != -1:
# already a selection, don't change it
return
for row in model:
if row[self.OPTICAL_HAS_MEDIA] is True:
widget.set_active(idx)
return
idx += 1
widget.set_active(0)
def _populate_media(self):
if self._populated:
return
widget = self.combo
model = widget.get_model()
model.clear()
for nodedev in self.conn.filter_nodedevs(devtype="storage"):
if not (nodedev.xmlobj.device_type == "storage" and
nodedev.xmlobj.drive_type in ["cdrom", "floppy"]):
continue
if nodedev.xmlobj.drive_type != self.media_type:
continue
row = [None] * self.OPTICAL_FIELDS
row[self.OPTICAL_DEV_PATH] = nodedev.xmlobj.block
row[self.OPTICAL_LABEL] = self._pretty_label(nodedev)
row[self.OPTICAL_HAS_MEDIA] = nodedev.xmlobj.media_available
row[self.OPTICAL_DEV_KEY] = nodedev.xmlobj.name
model.append(row)
self._set_mediadev_default()
widget.set_active(-1)
self._mediadev_set_default_selection()
self._populated = True
##############
# Public API #
##############
def reset_state(self):
try:
self._populate_media()
except Exception:
logging.debug("Error populating mediadev combo", exc_info=True)
def get_path(self):
return uiutil.get_list_selection(
self.combo, column=self.OPTICAL_DEV_PATH)
def has_media(self):
return uiutil.get_list_selection(
self.combo, column=self.OPTICAL_HAS_MEDIA) or False
Mini Shell