1 files changed, 130 insertions, 0 deletions
diff --git a/src/sugar/graphics/objectchooser.py b/src/sugar/graphics/objectchooser.py
new file mode 100644
index 0000000..fb3703d
--- /dev/null
+++ b/src/sugar/graphics/objectchooser.py
@@ -0,0 +1,130 @@
+# Copyright (C) 2007, One Laptop Per Child
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+"""
+STABLE.
+"""
+
+import logging
+
+import gobject
+import gtk
+import dbus
+
+from sugar.datastore import datastore
+
+J_DBUS_SERVICE = 'org.laptop.Journal'
+J_DBUS_INTERFACE = 'org.laptop.Journal'
+J_DBUS_PATH = '/org/laptop/Journal'
+
+class ObjectChooser(object):
+    def __init__(self, title=None, parent=None, flags=None, buttons=None,
+                 what_filter=None):
+        # For backwards compatibility:
+        # - We ignore title, flags and buttons.
+        # - 'parent' can be a xid or a gtk.Window
+
+        if title is not None or flags is not None or buttons is not None:
+            logging.warning('Invocation of ObjectChooser() has deprecated '
+                            'parameters.')
+
+        if parent is None:
+            parent_xid = 0
+        elif hasattr(parent, 'window') and hasattr(parent.window, 'xid'):
+            parent_xid = parent.window.xid
+        else:
+            parent_xid = parent
+
+        self._parent_xid = parent_xid
+        self._main_loop = None
+        self._object_id = None
+        self._bus = None
+        self._chooser_id = None
+        self._response_code = gtk.RESPONSE_NONE
+        self._what_filter = what_filter
+        
+    def run(self):
+        self._object_id = None
+
+        self._main_loop = gobject.MainLoop()
+
+        self._bus = dbus.SessionBus(mainloop=self._main_loop)
+        self._bus.add_signal_receiver(
+                self.__name_owner_changed_cb,
+                signal_name="NameOwnerChanged",
+                dbus_interface="org.freedesktop.DBus",
+                arg0=J_DBUS_SERVICE)
+
+        obj = self._bus.get_object(J_DBUS_SERVICE, J_DBUS_PATH)
+        journal = dbus.Interface(obj, J_DBUS_INTERFACE)
+        journal.connect_to_signal('ObjectChooserResponse',
+                                  self.__chooser_response_cb)
+        journal.connect_to_signal('ObjectChooserCancelled',
+                                  self.__chooser_cancelled_cb)
+
+        if self._what_filter is None:
+            what_filter = ''
+        else:
+            what_filter = self._what_filter
+
+        self._chooser_id = journal.ChooseObject(self._parent_xid, what_filter)
+
+        gtk.gdk.threads_leave()
+        try:
+            self._main_loop.run()
+        finally:
+            gtk.gdk.threads_enter()
+        self._main_loop = None
+
+        return self._response_code
+
+    def get_selected_object(self):
+        if self._object_id is None:
+            return None
+        else:
+            return datastore.get(self._object_id)
+
+    def destroy(self):
+        self._cleanup()
+
+    def _cleanup(self):
+        if self._main_loop is not None:
+            self._main_loop.quit()
+            self._main_loop = None
+        self._bus = None
+
+    def __chooser_response_cb(self, chooser_id, object_id):
+        if chooser_id != self._chooser_id:
+            return
+        logging.debug('ObjectChooser.__chooser_response_cb: %r' % object_id)
+        self._response_code = gtk.RESPONSE_ACCEPT
+        self._object_id = object_id
+        self._cleanup()
+
+    def __chooser_cancelled_cb(self, chooser_id):
+        if chooser_id != self._chooser_id:
+            return
+        logging.debug('ObjectChooser.__chooser_cancelled_cb: %r' % chooser_id)
+        self._response_code = gtk.RESPONSE_CANCEL
+        self._cleanup()
+
+    def __name_owner_changed_cb(self, name, old, new):
+        logging.debug('ObjectChooser.__name_owner_changed_cb')
+        # Journal service disappeared from the bus
+        self._response_code = gtk.RESPONSE_CANCEL
+        self._cleanup()
+