diff options
Diffstat (limited to 'src/jarabe/model/homemodel.py')
| -rw-r--r-- | src/jarabe/model/homemodel.py | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/src/jarabe/model/homemodel.py b/src/jarabe/model/homemodel.py new file mode 100644 index 0000000..3f116bf --- /dev/null +++ b/src/jarabe/model/homemodel.py @@ -0,0 +1,286 @@ +# Copyright (C) 2006-2007 Owen Williams. +# +# 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 St, Fifth Floor, Boston, MA 02110-1301 USA + +import logging + +import gobject +import wnck +import gtk + +from sugar import wm +from sugar.activity import get_registry + +from jarabe.model.homeactivity import HomeActivity + +def get_sugar_window_type(wnck_window): + window = gtk.gdk.window_foreign_new(wnck_window.get_xid()) + prop_info = window.property_get('_SUGAR_WINDOW_TYPE', 'STRING') + if prop_info is None: + return None + else: + return prop_info[2] + +class HomeModel(gobject.GObject): + """Model of the "Home" view (activity management) + + The HomeModel is basically the point of registration + for all running activities within Sugar. It traps + events that tell the system there is a new activity + being created (generated by the activity factories), + or removed, as well as those which tell us that the + currently focussed activity has changed. + + The HomeModel tracks a set of HomeActivity instances, + which are tracking the window to activity mappings + the activity factories have set up. + """ + __gsignals__ = { + 'activity-added': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'activity-removed': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'active-activity-changed': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'tabbing-activity-changed': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'launch-started': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'launch-completed': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])), + 'launch-failed': (gobject.SIGNAL_RUN_FIRST, + gobject.TYPE_NONE, + ([gobject.TYPE_PYOBJECT])) + } + + def __init__(self): + gobject.GObject.__init__(self) + + self._activities = [] + self._active_activity = None + self._tabbing_activity = None + + screen = wnck.screen_get_default() + screen.connect('window-opened', self._window_opened_cb) + screen.connect('window-closed', self._window_closed_cb) + screen.connect('active-window-changed', + self._active_window_changed_cb) + + def _get_activities_with_window(self): + ret = [] + for i in self._activities: + if i.get_window() is not None: + ret.append(i) + return ret + + def get_previous_activity(self, current=None): + if not current: + current = self._active_activity + + activities = self._get_activities_with_window() + i = activities.index(current) + if len(activities) == 0: + return None + elif i - 1 >= 0: + return activities[i - 1] + else: + return activities[len(activities) - 1] + + def get_next_activity(self, current=None): + if not current: + current = self._active_activity + + activities = self._get_activities_with_window() + i = activities.index(current) + if len(activities) == 0: + return None + elif i + 1 < len(activities): + return activities[i + 1] + else: + return activities[0] + + def get_active_activity(self): + """Returns the activity that the user is currently working in""" + return self._active_activity + + def get_tabbing_activity(self): + """Returns the activity that is currently highlighted during tabbing""" + return self._tabbing_activity + + def set_tabbing_activity(self, activity): + """Sets the activity that is currently highlighted during tabbing""" + self._tabbing_activity = activity + self.emit("tabbing-activity-changed", self._tabbing_activity) + + def _set_active_activity(self, home_activity): + if self._active_activity == home_activity: + return + + if home_activity: + home_activity.set_active(True) + + if self._active_activity: + self._active_activity.set_active(False) + + self._active_activity = home_activity + self.emit('active-activity-changed', self._active_activity) + + def __iter__(self): + return iter(self._activities) + + def __len__(self): + return len(self._activities) + + def __getitem__(self, i): + return self._activities[i] + + def index(self, obj): + return self._activities.index(obj) + + def _window_opened_cb(self, screen, window): + if window.get_window_type() == wnck.WINDOW_NORMAL: + home_activity = None + + activity_id = wm.get_activity_id(window) + + service_name = wm.get_bundle_id(window) + if service_name: + registry = get_registry() + activity_info = registry.get_activity(service_name) + else: + activity_info = None + + if activity_id: + home_activity = self._get_activity_by_id(activity_id) + + if not home_activity: + home_activity = HomeActivity(activity_info, activity_id, window) + self._add_activity(home_activity) + else: + home_activity.set_window(window) + + if get_sugar_window_type(window) != 'launcher': + home_activity.props.launching = False + self.emit('launch-completed', home_activity) + + if self._active_activity is None: + self._set_active_activity(home_activity) + + def _window_closed_cb(self, screen, window): + if window.get_window_type() == wnck.WINDOW_NORMAL: + self._remove_activity_by_xid(window.get_xid()) + + def _get_activity_by_xid(self, xid): + for home_activity in self._activities: + if home_activity.get_xid() == xid: + return home_activity + return None + + def _get_activity_by_id(self, activity_id): + for home_activity in self._activities: + if home_activity.get_activity_id() == activity_id: + return home_activity + return None + + def _active_window_changed_cb(self, screen, previous_window=None): + window = screen.get_active_window() + if window is None: + return + + if window.get_window_type() != wnck.WINDOW_DIALOG: + while window.get_transient() is not None: + window = window.get_transient() + + act = self._get_activity_by_xid(window.get_xid()) + if act is not None: + self._set_active_activity(act) + + def _add_activity(self, home_activity): + self._activities.append(home_activity) + self.emit('activity-added', home_activity) + + def _remove_activity(self, home_activity): + if home_activity == self._active_activity: + windows = wnck.screen_get_default().get_windows_stacked() + windows.reverse() + for window in windows: + new_activity = self._get_activity_by_xid(window.get_xid()) + if new_activity is not None: + self._set_active_activity(new_activity) + break + else: + logging.error('No activities are running') + self._set_active_activity(None) + + self.emit('activity-removed', home_activity) + self._activities.remove(home_activity) + + def _remove_activity_by_xid(self, xid): + home_activity = self._get_activity_by_xid(xid) + if home_activity: + self._remove_activity(home_activity) + else: + logging.error('Model for window %d does not exist.' % xid) + + def notify_launch(self, activity_id, service_name): + registry = get_registry() + activity_info = registry.get_activity(service_name) + if not activity_info: + raise ValueError("Activity service name '%s'" \ + " was not found in the bundle registry." + % service_name) + home_activity = HomeActivity(activity_info, activity_id) + home_activity.props.launching = True + self._add_activity(home_activity) + + self._set_active_activity(home_activity) + + self.emit('launch-started', home_activity) + + # FIXME: better learn about finishing processes by receiving a signal. + # Now just check whether an activity has a window after ~90sec + gobject.timeout_add(90000, self._check_activity_launched, activity_id) + + def notify_launch_failed(self, activity_id): + home_activity = self._get_activity_by_id(activity_id) + if home_activity: + logging.debug("Activity %s (%s) launch failed" % \ + (activity_id, home_activity.get_type())) + home_activity.props.launching = False + self._remove_activity(home_activity) + else: + logging.error('Model for activity id %s does not exist.' + % activity_id) + + self.emit('launch-failed', home_activity) + + def _check_activity_launched(self, activity_id): + home_activity = self._get_activity_by_id(activity_id) + + if not home_activity: + logging.debug('Activity %s has been closed already.' % activity_id) + return False + + if home_activity.props.launching: + logging.debug('Activity %s still launching, assuming it failed...' + % activity_id) + self.notify_launch_failed(activity_id) + return False |