131 lines
4.2 KiB
Python
131 lines
4.2 KiB
Python
# Copyright (C) 2007, One Laptop Per Child
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library 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 GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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"""
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STABLE.
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"""
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import logging
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import gobject
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import gtk
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import dbus
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from sugar.datastore import datastore
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J_DBUS_SERVICE = 'org.laptop.Journal'
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J_DBUS_INTERFACE = 'org.laptop.Journal'
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J_DBUS_PATH = '/org/laptop/Journal'
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class ObjectChooser(object):
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def __init__(self, title=None, parent=None, flags=None, buttons=None,
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what_filter=None):
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# For backwards compatibility:
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# - We ignore title, flags and buttons.
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# - 'parent' can be a xid or a gtk.Window
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if title is not None or flags is not None or buttons is not None:
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logging.warning('Invocation of ObjectChooser() has deprecated '
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'parameters.')
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if parent is None:
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parent_xid = 0
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elif hasattr(parent, 'window') and hasattr(parent.window, 'xid'):
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parent_xid = parent.window.xid
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else:
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parent_xid = parent
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self._parent_xid = parent_xid
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self._main_loop = None
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self._object_id = None
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self._bus = None
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self._chooser_id = None
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self._response_code = gtk.RESPONSE_NONE
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self._what_filter = what_filter
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def run(self):
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self._object_id = None
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self._main_loop = gobject.MainLoop()
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self._bus = dbus.SessionBus(mainloop=self._main_loop)
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self._bus.add_signal_receiver(
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self.__name_owner_changed_cb,
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signal_name="NameOwnerChanged",
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dbus_interface="org.freedesktop.DBus",
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arg0=J_DBUS_SERVICE)
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obj = self._bus.get_object(J_DBUS_SERVICE, J_DBUS_PATH)
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journal = dbus.Interface(obj, J_DBUS_INTERFACE)
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journal.connect_to_signal('ObjectChooserResponse',
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self.__chooser_response_cb)
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journal.connect_to_signal('ObjectChooserCancelled',
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self.__chooser_cancelled_cb)
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if self._what_filter is None:
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what_filter = ''
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else:
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what_filter = self._what_filter
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self._chooser_id = journal.ChooseObject(self._parent_xid, what_filter)
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gtk.gdk.threads_leave()
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try:
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self._main_loop.run()
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finally:
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gtk.gdk.threads_enter()
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self._main_loop = None
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return self._response_code
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def get_selected_object(self):
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if self._object_id is None:
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return None
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else:
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return datastore.get(self._object_id)
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def destroy(self):
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self._cleanup()
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def _cleanup(self):
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if self._main_loop is not None:
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self._main_loop.quit()
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self._main_loop = None
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self._bus = None
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def __chooser_response_cb(self, chooser_id, object_id):
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if chooser_id != self._chooser_id:
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return
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logging.debug('ObjectChooser.__chooser_response_cb: %r' % object_id)
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self._response_code = gtk.RESPONSE_ACCEPT
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self._object_id = object_id
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self._cleanup()
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def __chooser_cancelled_cb(self, chooser_id):
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if chooser_id != self._chooser_id:
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return
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logging.debug('ObjectChooser.__chooser_cancelled_cb: %r' % chooser_id)
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self._response_code = gtk.RESPONSE_CANCEL
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self._cleanup()
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def __name_owner_changed_cb(self, name, old, new):
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logging.debug('ObjectChooser.__name_owner_changed_cb')
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# Journal service disappeared from the bus
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self._response_code = gtk.RESPONSE_CANCEL
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self._cleanup()
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