diff options
Diffstat (limited to 'src/service.c')
| -rw-r--r-- | src/service.c | 1178 |
1 files changed, 1178 insertions, 0 deletions
diff --git a/src/service.c b/src/service.c new file mode 100644 index 0000000..45bbdad --- /dev/null +++ b/src/service.c @@ -0,0 +1,1178 @@ +/* + * Copyright 2013 Canonical Ltd. + * + * Authors: + * Charles Kerr <charles.kerr@canonical.com> + * + * This program is free software: you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 3, as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranties of + * MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>. + */ + +#include <glib/gi18n.h> +#include <gio/gio.h> + +#include "backend.h" +#include "service.h" + +#define BUS_NAME "com.canonical.indicator.session" +#define BUS_PATH "/com/canonical/indicator/session" + +#define ICON_DEFAULT "system-devices-panel" +#define ICON_INFO "system-devices-panel-information" +#define ICON_ALERT "system-devices-panel-alert" + +G_DEFINE_TYPE (IndicatorSessionService, + indicator_session_service, + G_TYPE_OBJECT) + +/* signals enum */ +enum +{ + NAME_LOST, + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL] = { 0 }; + +enum +{ + PROP_0, + PROP_MAX_USERS, + PROP_LAST +}; + +static GParamSpec * properties[PROP_LAST]; + +enum +{ + SECTION_HEADER = (1<<0), + SECTION_ADMIN = (1<<1), + SECTION_SETTINGS = (1<<2), + SECTION_SWITCH = (1<<3), + SECTION_SESSION = (1<<4) +}; + +enum +{ + PROFILE_DESKTOP, + PROFILE_GREETER, + N_PROFILES +}; + +static const char * const menu_names[N_PROFILES] = +{ + "desktop", + "desktop_greeter" +}; + +struct ProfileMenuInfo +{ + /* the root level -- the header is the only child of this */ + GMenu * menu; + + /* parent of the sections. This is the header's submenu */ + GMenu * submenu; + + guint export_id; +}; + +struct _IndicatorSessionServicePrivate +{ + guint own_id; + guint max_users; + IndicatorSessionUsers * backend_users; + IndicatorSessionGuest * backend_guest; + IndicatorSessionActions * backend_actions; + GSettings * indicator_settings; + GSettings * keybinding_settings; + GSimpleActionGroup * actions; + guint actions_export_id; + struct ProfileMenuInfo menus[N_PROFILES]; + GSimpleAction * header_action; + GSimpleAction * user_switcher_action; + GSimpleAction * guest_switcher_action; + GHashTable * users; + guint rebuild_id; + int rebuild_flags; + GDBusConnection * conn; + GCancellable * cancellable; +}; + +typedef IndicatorSessionServicePrivate priv_t; + +static const char * get_current_real_name (IndicatorSessionService * self); + +/*** +**** +***/ + +static void rebuild_now (IndicatorSessionService * self, int section); +static void rebuild_soon (IndicatorSessionService * self, int section); + +static inline void +rebuild_header_soon (IndicatorSessionService * self) +{ + rebuild_soon (self, SECTION_HEADER); +} +static inline void +rebuild_switch_section_soon (IndicatorSessionService * self) +{ + rebuild_soon (self, SECTION_SWITCH); +} +static inline void +rebuild_session_section_soon (IndicatorSessionService * self) +{ + rebuild_soon (self, SECTION_SESSION); +} +static inline void +rebuild_settings_section_soon (IndicatorSessionService * self) +{ + rebuild_soon (self, SECTION_SETTINGS); +} + +/*** +**** +***/ + +static void +update_header_action (IndicatorSessionService * self) +{ + gchar * a11y; + gboolean need_attn; + gboolean show_name; + GVariant * variant; + const gchar * real_name; + const gchar * label; + const gchar * iconstr; + const priv_t * const p = self->priv; + + g_return_if_fail (p->header_action != NULL); + + if (indicator_session_actions_has_online_account_error (p->backend_actions)) + { + need_attn = TRUE; + iconstr = ICON_ALERT; + } + else + { + need_attn = FALSE; + iconstr = ICON_DEFAULT; + } + + show_name = g_settings_get_boolean (p->indicator_settings, + "show-real-name-on-panel"); + + real_name = get_current_real_name (self); + label = show_name && real_name ? real_name : ""; + + if (*label && need_attn) + { + /* Translators: the name of the menu ("System"), then the user's name, + then a hint that something in this menu requires user attention */ + a11y = g_strdup_printf (_("System, %s (Attention Required)"), real_name); + } + else if (*label) + { + /* Translators: the name of the menu ("System"), then the user's name */ + a11y = g_strdup_printf (_("System, %s"), label); + } + else if (need_attn) + { + a11y = g_strdup (_("System (Attention Required)")); + } + else + { + a11y = g_strdup (_("System")); + } + + variant = g_variant_new ("(sssb)", label, iconstr, a11y, TRUE); + g_simple_action_set_state (p->header_action, variant); + g_free (a11y); +} + +/*** +**** USERS +***/ + +static GMenuModel * create_switch_section (IndicatorSessionService * self); + +static void +add_user (IndicatorSessionService * self, guint uid) +{ + IndicatorSessionUser * u; + + if ((u = indicator_session_users_get_user (self->priv->backend_users, uid))) + { + /* update our user table */ + g_hash_table_insert (self->priv->users, GUINT_TO_POINTER(uid), u); + + /* queue rebuilds for the affected sections */ + rebuild_switch_section_soon (self); + if (u->is_current_user) + rebuild_header_soon (self); + } +} + +static void +on_user_added (IndicatorSessionUsers * backend_users G_GNUC_UNUSED, + guint uid, + gpointer gself) +{ + add_user (INDICATOR_SESSION_SERVICE(gself), uid); +} + +static void +on_user_changed (IndicatorSessionUsers * backend_users G_GNUC_UNUSED, + guint uid, + gpointer gself) +{ + add_user (INDICATOR_SESSION_SERVICE(gself), uid); +} + +static void +on_user_removed (IndicatorSessionUsers * backend_users G_GNUC_UNUSED, + guint uid, + gpointer gself) +{ + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE (gself); + g_return_if_fail (self != NULL); + + /* update our user table */ + g_hash_table_remove (self->priv->users, GUINT_TO_POINTER(uid)); + + /* enqueue rebuilds for the affected sections */ + rebuild_switch_section_soon (self); +} + +static const char * +get_current_real_name (IndicatorSessionService * self) +{ + GHashTableIter iter; + gpointer key, value; + + /* is it the guest? */ + if (indicator_session_guest_is_active (self->priv->backend_guest)) + return _("Guest"); + + /* is it a user? */ + g_hash_table_iter_init (&iter, self->priv->users); + while (g_hash_table_iter_next (&iter, &key, &value)) + { + IndicatorSessionUser * user = value; + if (user->is_current_user) + return user->real_name; + } + + return ""; +} + +/*** +**** +***/ + +static GMenuModel * +create_admin_section (void) +{ + GMenu * menu; + + menu = g_menu_new (); + g_menu_append (menu, _("About This Computer"), "indicator.about"); + g_menu_append (menu, _("Ubuntu Help"), "indicator.help"); + return G_MENU_MODEL (menu); +} + +static GMenuModel * +create_settings_section (IndicatorSessionService * self) +{ + GMenu * menu; + priv_t * p = self->priv; + + menu = g_menu_new (); + g_menu_append (menu, _("System Settings…"), "indicator.settings"); + if (indicator_session_actions_has_online_account_error (p->backend_actions)) + g_menu_append (menu, _("Online Accounts…"), "indicator.online-accounts"); + + return G_MENU_MODEL (menu); +} + +/** + * The switch-to-guest action's state is a dictionary with these entries: + * - "is-active" (boolean) + * - "is-logged-in" (boolean) + */ +static GVariant * +create_guest_switcher_state (IndicatorSessionService * self) +{ + GVariant * val; + GVariantBuilder b; + IndicatorSessionGuest * const g = self->priv->backend_guest; + + g_variant_builder_init (&b, G_VARIANT_TYPE ("a{sv}")); + val = g_variant_new_boolean (indicator_session_guest_is_active (g)); + g_variant_builder_add (&b, "{sv}", "is-active", val); + val = g_variant_new_boolean (indicator_session_guest_is_logged_in (g)); + g_variant_builder_add (&b, "{sv}", "is-logged-in", val); + return g_variant_builder_end (&b); +} + +/** + * The switch-to-user action's state is a dictionary with these entries: + * - "active-user" (username string) + * - "logged-in-users" (array of username strings) + */ +static GVariant * +create_user_switcher_state (IndicatorSessionService * self) +{ + GVariantBuilder a; + GVariantBuilder b; + GVariant * val; + GHashTableIter ht_iter; + gpointer ht_value; + const char * current_user; + + current_user = ""; + g_variant_builder_init (&a, G_VARIANT_TYPE("as")); + g_hash_table_iter_init (&ht_iter, self->priv->users); + while (g_hash_table_iter_next (&ht_iter, NULL, &ht_value)) + { + const IndicatorSessionUser * u = ht_value; + + if (u->is_current_user) + current_user = u->user_name; + + if (u->is_logged_in) + g_variant_builder_add (&a, "s", u->user_name); + } + + g_variant_builder_init (&b, G_VARIANT_TYPE("a{sv}")); + val = g_variant_new_string (current_user); + g_variant_builder_add (&b, "{sv}", "active-user", val); + val = g_variant_builder_end (&a); + g_variant_builder_add (&b, "{sv}", "logged-in-users", val); + return g_variant_builder_end (&b); +} + +static void +update_switch_actions (IndicatorSessionService * self) +{ + g_simple_action_set_state (self->priv->guest_switcher_action, + create_guest_switcher_state (self)); + + g_simple_action_set_state (self->priv->user_switcher_action, + create_user_switcher_state (self)); +} + +static gboolean +use_ellipsis (IndicatorSessionService * self) +{ + /* does the backend support confirmation prompts? */ + if (!indicator_session_actions_can_prompt (self->priv->backend_actions)) + return FALSE; + + /* has the user disabled prompts? */ + if (g_settings_get_boolean (self->priv->indicator_settings, + "suppress-logout-restart-shutdown")) + return FALSE; + + return TRUE; +} + +/* lower index == more useful. + When there are too many users for the menu, + we use this to decide which to cull. */ +static int +compare_users_by_usefulness (gconstpointer ga, gconstpointer gb) +{ + const IndicatorSessionUser * a = *(const IndicatorSessionUser**)ga; + const IndicatorSessionUser * b = *(const IndicatorSessionUser**)gb; + + if (a->is_current_user != b->is_current_user) + return a->is_current_user ? -1 : 1; + + if (a->is_logged_in != b->is_logged_in) + return a->is_logged_in ? -1 : 1; + + if (a->login_frequency != b->login_frequency) + return a->login_frequency > b->login_frequency ? -1 : 1; + + return 0; +} + +/* sorting them for display in the menu */ +static int +compare_users_by_label (gconstpointer ga, gconstpointer gb) +{ + int i; + const IndicatorSessionUser * a = *(const IndicatorSessionUser**)ga; + const IndicatorSessionUser * b = *(const IndicatorSessionUser**)gb; + + if ((i = g_strcmp0 (a->real_name, b->real_name))) + return i; + + return g_strcmp0 (a->user_name, b->user_name); +} + +static GMenuModel * +create_switch_section (IndicatorSessionService * self) +{ + gchar * str; + GMenu * menu; + GMenuItem * item; + guint i; + gpointer guser; + GHashTableIter iter; + GPtrArray * users; + const priv_t * const p = self->priv; + const gboolean ellipsis = use_ellipsis (self); + + menu = g_menu_new (); + + /* lockswitch */ + if (indicator_session_users_is_live_session (p->backend_users)) + { + const char * action = "indicator.switch-to-screensaver"; + item = g_menu_item_new (_("Start Screen Saver"), action); + } + else if (indicator_session_guest_is_active (p->backend_guest)) + { + const char * action = "indicator.switch-to-greeter"; + item = g_menu_item_new (ellipsis ? _("Switch Account…") + : _("Switch Account"), action); + } + else if (g_hash_table_size (p->users) == 1) + { + const char * action = "indicator.switch-to-greeter"; + item = g_menu_item_new (_("Lock"), action); + } + else + { + const char * action = "indicator.switch-to-greeter"; + item = g_menu_item_new (ellipsis ? _("Lock/Switch Account…") + : _("Lock/Switch Account"), action); + } + str = g_settings_get_string (p->keybinding_settings, "screensaver"); + g_menu_item_set_attribute (item, "accel", "s", str); + g_free (str); + g_menu_append_item (menu, item); + g_object_unref (item); + + if (indicator_session_guest_is_allowed (p->backend_guest)) + { + GMenuItem *item; + + item = g_menu_item_new (_("Guest Session"), "indicator.switch-to-guest"); + g_menu_item_set_attribute (item, "x-canonical-type", "s", "indicator.guest-menu-item"); + g_menu_append_item (menu, item); + + g_object_unref (item); + } + + /* build an array of all the users we know of */ + users = g_ptr_array_new (); + g_hash_table_iter_init (&iter, p->users); + while (g_hash_table_iter_next (&iter, NULL, &guser)) + g_ptr_array_add (users, guser); + + /* if there are too many users, cull out the less interesting ones */ + if (users->len > p->max_users) + { + g_ptr_array_sort (users, compare_users_by_usefulness); + g_ptr_array_set_size (users, p->max_users); + } + + /* sort the users by name */ + g_ptr_array_sort (users, compare_users_by_label); + + /* add the users */ + for (i=0; i<users->len; ++i) + { + const IndicatorSessionUser * u = g_ptr_array_index (users, i); + item = g_menu_item_new (u->real_name, NULL); + g_menu_item_set_action_and_target (item, "indicator.switch-to-user", "s", u->user_name); + g_menu_item_set_attribute (item, "x-canonical-type", "s", "indicator.user-menu-item"); + + if (u->icon_file != NULL) + { + GFile * file = g_file_new_for_path (u->icon_file); + GIcon * icon = g_file_icon_new (file); + g_menu_item_set_attribute_value (item, G_MENU_ATTRIBUTE_ICON, g_icon_serialize (icon)); + g_clear_object (&icon); + g_clear_object (&file); + } + + g_menu_append_item (menu, item); + g_object_unref (item); + } + + /* cleanup */ + g_ptr_array_free (users, TRUE); + return G_MENU_MODEL (menu); +} + +static GMenuModel * +create_session_section (IndicatorSessionService * self) +{ + GMenu * menu; + const priv_t * const p = self->priv; + GSettings * const s = p->indicator_settings; + const gboolean ellipsis = use_ellipsis (self); + + menu = g_menu_new (); + + if (indicator_session_actions_can_logout (p->backend_actions) && !g_settings_get_boolean (s, "suppress-logout-menuitem")) + { + const char * label = ellipsis ? _("Log Out…") : _("Log Out"); + g_menu_append (menu, label, "indicator.logout"); + } + + if (indicator_session_actions_can_suspend (p->backend_actions)) + g_menu_append (menu, _("Suspend"), "indicator.suspend"); + + if (indicator_session_actions_can_hibernate (p->backend_actions)) + g_menu_append (menu, _("Hibernate"), "indicator.hibernate"); + + /* NB: check 'ellipsis' here to skip this item if prompting is enabled + because this shows the same prompt as 'Shut Down' in Unity */ + if (!ellipsis && !g_settings_get_boolean (s, "suppress-restart-menuitem")) + { + const char * label = ellipsis ? _("Restart…") : _("Restart"); + g_menu_append (menu, label, "indicator.reboot"); + } + + if (!g_settings_get_boolean (s, "suppress-shutdown-menuitem")) + { + const char * label = ellipsis ? _("Shut Down…") : _("Shut Down"); + g_menu_append (menu, label, "indicator.power-off"); + } + + return G_MENU_MODEL (menu); +} + +static void +create_menu (IndicatorSessionService * self, int profile) +{ + GMenu * menu; + GMenu * submenu; + GMenuItem * header; + GMenuModel * sections[16]; + int i; + int n = 0; + + g_assert (0<=profile && profile<N_PROFILES); + g_assert (self->priv->menus[profile].menu == NULL); + + if (profile == PROFILE_DESKTOP) + { + sections[n++] = create_admin_section (); + sections[n++] = create_settings_section (self); + sections[n++] = create_switch_section (self); + sections[n++] = create_session_section (self); + } + else if (profile == PROFILE_GREETER) + { + sections[n++] = create_session_section (self); + } + + /* add sections to the submenu */ + submenu = g_menu_new (); + for (i=0; i<n; ++i) + { + g_menu_append_section (submenu, NULL, sections[i]); + g_object_unref (sections[i]); + } + + /* add submenu to the header */ + header = g_menu_item_new (NULL, "indicator._header"); + g_menu_item_set_attribute (header, "x-canonical-type", "s", "com.canonical.indicator.root"); + g_menu_item_set_submenu (header, G_MENU_MODEL (submenu)); + g_object_unref (submenu); + + /* add header to the menu */ + menu = g_menu_new (); + g_menu_append_item (menu, header); + g_object_unref (header); + + self->priv->menus[profile].menu = menu; + self->priv->menus[profile].submenu = submenu; +} + +/*** +**** GActions +***/ + +static IndicatorSessionActions * +get_backend_actions (gpointer gself) +{ + return INDICATOR_SESSION_SERVICE(gself)->priv->backend_actions; +} + +static void +on_about_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_about (get_backend_actions(gself)); +} + +static void +on_help_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_help (get_backend_actions(gself)); +} + +static void +on_settings_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_settings (get_backend_actions(gself)); +} + +static void +on_logout_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_logout (get_backend_actions(gself)); +} + +static void +on_suspend_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_suspend (get_backend_actions(gself)); +} + +static void +on_hibernate_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_hibernate (get_backend_actions(gself)); +} + +static void +on_reboot_activated (GSimpleAction * action G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_reboot (get_backend_actions(gself)); +} + +static void +on_power_off_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_power_off (get_backend_actions(gself)); +} + +static void +on_guest_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_switch_to_guest (get_backend_actions(gself)); +} + +static void +on_screensaver_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_switch_to_screensaver (get_backend_actions(gself)); +} + +static void +on_greeter_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param G_GNUC_UNUSED, + gpointer gself) +{ + indicator_session_actions_switch_to_greeter (get_backend_actions(gself)); +} + +static void +on_user_activated (GSimpleAction * a G_GNUC_UNUSED, + GVariant * param, + gpointer gself) +{ + const char * username = g_variant_get_string (param, NULL); + indicator_session_actions_switch_to_username (get_backend_actions(gself), + username); +} + +static void +init_gactions (IndicatorSessionService * self) +{ + GVariant * v; + GSimpleAction * a; + priv_t * p = self->priv; + + GActionEntry entries[] = { + { "about", on_about_activated }, + { "help", on_help_activated }, + { "settings", on_settings_activated }, + { "logout", on_logout_activated }, + { "suspend", on_suspend_activated }, + { "hibernate", on_hibernate_activated }, + { "reboot", on_reboot_activated }, + { "power-off", on_power_off_activated }, + { "switch-to-screensaver", on_screensaver_activated }, + { "switch-to-greeter", on_greeter_activated } + }; + + p->actions = g_simple_action_group_new (); + + g_action_map_add_action_entries (G_ACTION_MAP(p->actions), + entries, + G_N_ELEMENTS(entries), + self); + + /* add switch-to-guest action */ + v = create_guest_switcher_state (self); + a = g_simple_action_new_stateful ("switch-to-guest", NULL, v); + g_signal_connect (a, "activate", G_CALLBACK(on_guest_activated), self); + g_simple_action_group_insert (p->actions, G_ACTION(a)); + p->guest_switcher_action = a; + + /* add switch-to-user action... parameter is the uesrname */ + v = create_user_switcher_state (self); + a = g_simple_action_new_stateful ("switch-to-user", G_VARIANT_TYPE_STRING, v); + g_signal_connect (a, "activate", G_CALLBACK(on_user_activated), self); + g_simple_action_group_insert (p->actions, G_ACTION(a)); + p->user_switcher_action = a; + + /* add the header action */ + v = g_variant_new ("(sssb)", "label", ICON_DEFAULT, "a11y", TRUE); + a = g_simple_action_new_stateful ("_header", NULL, v); + g_simple_action_group_insert (p->actions, G_ACTION(a)); + p->header_action = a; + + rebuild_now (self, SECTION_HEADER); +} + +/*** +**** +***/ + +/** + * A small helper function for rebuild_now(). + * - removes the previous section + * - adds and unrefs the new section + */ +static void +rebuild_section (GMenu * parent, int pos, GMenuModel * new_section) +{ + g_menu_remove (parent, pos); + g_menu_insert_section (parent, pos, NULL, new_section); + g_object_unref (new_section); +} + +static void +rebuild_now (IndicatorSessionService * self, int sections) +{ + priv_t * p = self->priv; + struct ProfileMenuInfo * desktop = &p->menus[PROFILE_DESKTOP]; + struct ProfileMenuInfo * greeter = &p->menus[PROFILE_GREETER]; + + if (sections & SECTION_HEADER) + { + update_header_action (self); + } + + if (sections & SECTION_ADMIN) + { + rebuild_section (desktop->submenu, 0, create_admin_section()); + } + + if (sections & SECTION_SETTINGS) + { + rebuild_section (desktop->submenu, 1, create_settings_section(self)); + } + + if (sections & SECTION_SWITCH) + { + rebuild_section (desktop->submenu, 2, create_switch_section(self)); + update_switch_actions (self); + } + + if (sections & SECTION_SESSION) + { + rebuild_section (desktop->submenu, 3, create_session_section(self)); + rebuild_section (greeter->submenu, 0, create_session_section(self)); + } +} + +static int +rebuild_timeout_func (IndicatorSessionService * self) +{ + priv_t * p = self->priv; + rebuild_now (self, p->rebuild_flags); + p->rebuild_flags = 0; + p->rebuild_id = 0; + return G_SOURCE_REMOVE; +} + +static void +rebuild_soon (IndicatorSessionService * self, int section) +{ + priv_t * p = self->priv; + + p->rebuild_flags |= section; + + if (p->rebuild_id == 0) + { + /* Change events seem to come over the bus in small bursts. This msec + value is an arbitrary number that tries to be large enough to fold + multiple events into a single rebuild, but small enough that the + user won't notice any lag. */ + static const int REBUILD_INTERVAL_MSEC = 500; + + p->rebuild_id = g_timeout_add (REBUILD_INTERVAL_MSEC, + (GSourceFunc)rebuild_timeout_func, + self); + } +} + +/*** +**** GDBus +***/ + +static void +on_bus_acquired (GDBusConnection * connection, + const gchar * name, + gpointer gself) +{ + int i; + guint id; + GError * err = NULL; + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE(gself); + priv_t * p = self->priv; + + g_debug ("bus acquired: %s", name); + + p->conn = g_object_ref (G_OBJECT (connection)); + + /* export the actions */ + if ((id = g_dbus_connection_export_action_group (connection, + BUS_PATH, + G_ACTION_GROUP (p->actions), + &err))) + { + p->actions_export_id = id; + } + else + { + g_warning ("cannot export action group: %s", err->message); + g_clear_error (&err); + } + + /* export the menus */ + for (i=0; i<N_PROFILES; ++i) + { + char * path = g_strdup_printf ("%s/%s", BUS_PATH, menu_names[i]); + struct ProfileMenuInfo * menu = &p->menus[i]; + + if (menu->menu == NULL) + create_menu (self, i); + + if ((id = g_dbus_connection_export_menu_model (connection, + path, + G_MENU_MODEL (menu->menu), + &err))) + { + menu->export_id = id; + } + else + { + g_warning ("cannot export %s menu: %s", menu_names[i], err->message); + g_clear_error (&err); + } + + g_free (path); + } +} + +static void +unexport (IndicatorSessionService * self) +{ + int i; + priv_t * p = self->priv; + + /* unexport the menus */ + for (i=0; i<N_PROFILES; ++i) + { + guint * id = &self->priv->menus[i].export_id; + + if (*id) + { + g_dbus_connection_unexport_menu_model (p->conn, *id); + *id = 0; + } + } + + /* unexport the actions */ + if (p->actions_export_id) + { + g_dbus_connection_unexport_action_group (p->conn, p->actions_export_id); + p->actions_export_id = 0; + } +} + +static void +on_name_lost (GDBusConnection * connection G_GNUC_UNUSED, + const gchar * name, + gpointer gself) +{ + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE (gself); + + g_debug ("%s %s name lost %s", G_STRLOC, G_STRFUNC, name); + + unexport (self); + + g_signal_emit (self, signals[NAME_LOST], 0, NULL); +} + +/*** +**** +***/ + +static void +/* cppcheck-suppress unusedFunction */ +indicator_session_service_init (IndicatorSessionService * self) +{ + GList * l; + GList * uids; + priv_t * p; + gpointer gp; + + /* init our priv pointer */ + p = G_TYPE_INSTANCE_GET_PRIVATE (self, + INDICATOR_TYPE_SESSION_SERVICE, + IndicatorSessionServicePrivate); + p->indicator_settings = g_settings_new ("com.canonical.indicator.session"); + p->keybinding_settings = g_settings_new ("org.gnome.settings-daemon.plugins.media-keys"); + self->priv = p; + + /* init the backend objects */ + p->cancellable = g_cancellable_new (); + backend_get (p->cancellable, &p->backend_actions, + &p->backend_users, + &p->backend_guest); + + /* init our key-to-User table */ + p->users = g_hash_table_new_full (g_direct_hash, + g_direct_equal, + NULL, + (GDestroyNotify)indicator_session_user_free); + uids = indicator_session_users_get_uids (p->backend_users); + for (l=uids; l!=NULL; l=l->next) + add_user (self, GPOINTER_TO_UINT(l->data)); + g_list_free (uids); + + init_gactions (self); + + /* watch for changes in backend_users */ + gp = p->backend_users; + g_signal_connect (gp, INDICATOR_SESSION_USERS_SIGNAL_USER_ADDED, + G_CALLBACK(on_user_added), self); + g_signal_connect (gp, INDICATOR_SESSION_USERS_SIGNAL_USER_CHANGED, + G_CALLBACK(on_user_changed), self); + g_signal_connect (gp, INDICATOR_SESSION_USERS_SIGNAL_USER_REMOVED, + G_CALLBACK(on_user_removed), self); + g_signal_connect_swapped (gp, "notify::is-live-session", + G_CALLBACK(rebuild_switch_section_soon), self); + + /* watch for changes in backend_guest */ + gp = p->backend_guest; + g_signal_connect_swapped (gp, "notify::guest-is-active-session", + G_CALLBACK(rebuild_header_soon), self); + g_signal_connect_swapped (gp, "notify", + G_CALLBACK(rebuild_switch_section_soon), self); + + /* watch for updates in backend_actions */ + gp = p->backend_actions; + g_signal_connect_swapped (gp, "notify", + G_CALLBACK(rebuild_switch_section_soon), self); + g_signal_connect_swapped (gp, "notify", + G_CALLBACK(rebuild_session_section_soon), self); + g_signal_connect_swapped (gp, "notify::has-online-account-error", + G_CALLBACK(rebuild_header_soon), self); + g_signal_connect_swapped (gp, "notify::has-online-account-error", + G_CALLBACK(rebuild_settings_section_soon), self); + + /* watch for changes in the indicator's settings */ + gp = p->indicator_settings; + g_signal_connect_swapped (gp, "changed::suppress-logout-restart-shutdown", + G_CALLBACK(rebuild_switch_section_soon), self); + g_signal_connect_swapped (gp, "changed::suppress-logout-restart-shutdown", + G_CALLBACK(rebuild_session_section_soon), self); + g_signal_connect_swapped (gp, "changed::suppress-logout-menuitem", + G_CALLBACK(rebuild_session_section_soon), self); + g_signal_connect_swapped (gp, "changed::suppress-restart-menuitem", + G_CALLBACK(rebuild_session_section_soon), self); + g_signal_connect_swapped (gp, "changed::suppress-shutdown-menuitem", + G_CALLBACK(rebuild_session_section_soon), self); + g_signal_connect_swapped (gp, "changed::show-real-name-on-panel", + G_CALLBACK(rebuild_header_soon), self); + + /* watch for changes to the lock keybinding */ + gp = p->keybinding_settings; + g_signal_connect_swapped (gp, "changed::screensaver", + G_CALLBACK(rebuild_switch_section_soon), self); + + self->priv->own_id = g_bus_own_name (G_BUS_TYPE_SESSION, + BUS_NAME, + G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT, + on_bus_acquired, + NULL, + on_name_lost, + self, + NULL); +} + +/*** +**** GObject plumbing: properties +***/ + +static void +my_get_property (GObject * o, + guint property_id, + GValue * value, + GParamSpec * pspec) +{ + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE (o); + + switch (property_id) + { + case PROP_MAX_USERS: + g_value_set_uint (value, self->priv->max_users); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (o, property_id, pspec); + } +} + +static void +my_set_property (GObject * o, + guint property_id, + const GValue * value, + GParamSpec * pspec) +{ + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE (o); + + switch (property_id) + { + case PROP_MAX_USERS: + self->priv->max_users = g_value_get_uint (value); + rebuild_switch_section_soon (self); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (o, property_id, pspec); + } +} + +/*** +**** GObject plumbing: life cycle +***/ + +static void +my_dispose (GObject * o) +{ + int i; + IndicatorSessionService * self = INDICATOR_SESSION_SERVICE(o); + priv_t * p = self->priv; + + if (p->own_id) + { + g_bus_unown_name (p->own_id); + p->own_id = 0; + } + + unexport (self); + + if (p->cancellable != NULL) + { + g_cancellable_cancel (p->cancellable); + g_clear_object (&p->cancellable); + } + + if (p->rebuild_id) + { + g_source_remove (p->rebuild_id); + p->rebuild_id = 0; + } + + g_clear_pointer (&p->users, g_hash_table_destroy); + g_clear_object (&p->backend_users); + g_clear_object (&p->backend_guest); + g_clear_object (&p->backend_actions); + g_clear_object (&p->indicator_settings); + g_clear_object (&p->keybinding_settings); + g_clear_object (&p->actions); + + for (i=0; i<N_PROFILES; ++i) + g_clear_object (&p->menus[i].menu); + + g_clear_object (&p->header_action); + g_clear_object (&p->user_switcher_action); + g_clear_object (&p->guest_switcher_action); + g_clear_object (&p->conn); + + G_OBJECT_CLASS (indicator_session_service_parent_class)->dispose (o); +} + +static void +/* cppcheck-suppress unusedFunction */ +indicator_session_service_class_init (IndicatorSessionServiceClass * klass) +{ + GObjectClass * object_class = G_OBJECT_CLASS (klass); + + object_class->dispose = my_dispose; + object_class->get_property = my_get_property; + object_class->set_property = my_set_property; + + g_type_class_add_private (klass, sizeof (IndicatorSessionServicePrivate)); + + signals[NAME_LOST] = g_signal_new (INDICATOR_SESSION_SERVICE_SIGNAL_NAME_LOST, + G_TYPE_FROM_CLASS(klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (IndicatorSessionServiceClass, name_lost), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + properties[PROP_0] = NULL; + + properties[PROP_MAX_USERS] = g_param_spec_uint ("max-users", + "Max Users", + "Max visible users", + 0, INT_MAX, 12, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT | + G_PARAM_STATIC_STRINGS); + + g_object_class_install_properties (object_class, PROP_LAST, properties); +} + +IndicatorSessionService * +indicator_session_service_new (void) +{ + GObject * o = g_object_new (INDICATOR_TYPE_SESSION_SERVICE, NULL); + + return INDICATOR_SESSION_SERVICE (o); +} |