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authorCharles Kerr <charles.kerr@canonical.com>2013-06-16 23:09:09 -0500
committerCharles Kerr <charles.kerr@canonical.com>2013-06-16 23:09:09 -0500
commitee13ae6fa34d0bc0330bdd68c11a6d8b62e44cfd (patch)
treee1e8b04633223b265716aa3c30278dbc21ee9dde /src
parentda79f94b45b12154b89d3a095844f97115769558 (diff)
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add the heart of the service
Diffstat (limited to 'src')
-rw-r--r--src/service.c1053
-rw-r--r--src/service.h79
2 files changed, 1132 insertions, 0 deletions
diff --git a/src/service.c b/src/service.c
new file mode 100644
index 0000000..5aabefc
--- /dev/null
+++ b/src/service.c
@@ -0,0 +1,1053 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * Authors:
+ * Charles Kerr <charles.kerr@canonical.com>
+ * Ted Gould <ted@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 "config.h"
+
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+
+#include "device.h"
+#include "device-provider.h"
+#include "service.h"
+
+#define BUS_NAME "power.indicator"
+#define BUS_PATH "/com/canonical/indicator/power"
+
+#define SETTINGS_SHOW_TIME_S "show-time"
+#define SETTINGS_ICON_POLICY_S "icon-policy"
+
+G_DEFINE_TYPE (IndicatorPowerService,
+ indicator_power_service,
+ G_TYPE_OBJECT)
+
+enum
+{
+ SIGNAL_NAME_LOST,
+ LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+enum
+{
+ PROP_0,
+ PROP_REPLACE,
+ PROP_DEVICE_PROVIDER,
+ PROP_LAST
+};
+
+static GParamSpec * properties[PROP_LAST];
+
+enum
+{
+ SECTION_HEADER = (1<<0),
+ SECTION_DEVICES = (1<<1),
+ SECTION_SETTINGS = (1<<2),
+};
+
+enum
+{
+ PROFILE_DESKTOP,
+ PROFILE_GREETER,
+ N_PROFILES
+};
+
+static const char * const menu_names[N_PROFILES] =
+{
+ "desktop",
+ "greeter"
+};
+
+enum
+{
+ POWER_INDICATOR_ICON_POLICY_PRESENT,
+ POWER_INDICATOR_ICON_POLICY_CHARGE,
+ POWER_INDICATOR_ICON_POLICY_NEVER
+};
+
+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 _IndicatorPowerServicePrivate
+{
+ GCancellable * cancellable;
+
+ GSettings * settings;
+
+ guint own_id;
+ guint actions_export_id;
+ GDBusConnection * conn;
+
+ struct ProfileMenuInfo menus[N_PROFILES];
+
+ GSimpleActionGroup * actions;
+ GSimpleAction * header_action;
+ GSimpleAction * show_time_action;
+
+ gboolean replace;
+
+ IndicatorPowerDevice * primary_device;
+ GList * devices; /* IndicatorPowerDevice */
+
+ IndicatorPowerDeviceProvider * device_provider;
+};
+
+typedef IndicatorPowerServicePrivate priv_t;
+
+/***
+****
+***/
+
+static void rebuild_now (IndicatorPowerService * self, guint section);
+
+static inline void
+rebuild_header_now (IndicatorPowerService * self)
+{
+ rebuild_now (self, SECTION_HEADER);
+}
+
+static inline void
+rebuild_devices_section_now (IndicatorPowerService * self)
+{
+ rebuild_now (self, SECTION_DEVICES);
+}
+
+static inline void
+rebuild_settings_section_now (IndicatorPowerService * self)
+{
+ rebuild_now (self, SECTION_SETTINGS);
+}
+
+/***
+****
+**** DEVICES
+****
+***/
+
+/* the higher the weight, the more interesting the device */
+static int
+get_device_kind_weight (const IndicatorPowerDevice * device)
+{
+ UpDeviceKind kind;
+ static gboolean initialized = FALSE;
+ static int weights[UP_DEVICE_KIND_LAST];
+
+ kind = indicator_power_device_get_kind (device);
+ g_return_val_if_fail (0<=kind && kind<UP_DEVICE_KIND_LAST, 0);
+
+ if (G_UNLIKELY(!initialized))
+ {
+ int i;
+
+ initialized = TRUE;
+
+ for (i=0; i<UP_DEVICE_KIND_LAST; i++)
+ weights[i] = 1;
+ weights[UP_DEVICE_KIND_BATTERY] = 2;
+ weights[UP_DEVICE_KIND_LINE_POWER] = 0;
+ }
+
+ return weights[kind];
+}
+
+/* sort devices from most interesting to least interesting on this criteria:
+ 1. discharging items from least time remaining until most time remaining
+ 2. discharging items with an unknown time remaining
+ 3. charging items from most time left to charge to least time left to charge
+ 4. charging items with an unknown time remaining
+ 5. batteries, then non-line power, then line-power */
+static gint
+device_compare_func (gconstpointer ga, gconstpointer gb)
+{
+ int ret;
+ int state;
+ const IndicatorPowerDevice * a = ga;
+ const IndicatorPowerDevice * b = gb;
+ const int a_state = indicator_power_device_get_state (a);
+ const int b_state = indicator_power_device_get_state (b);
+ const gdouble a_percentage = indicator_power_device_get_percentage (a);
+ const gdouble b_percentage = indicator_power_device_get_percentage (b);
+ const time_t a_time = indicator_power_device_get_time (a);
+ const time_t b_time = indicator_power_device_get_time (b);
+
+ ret = 0;
+
+ state = UP_DEVICE_STATE_DISCHARGING;
+ if (!ret && ((a_state == state) || (b_state == state)))
+ {
+ if (a_state != state) /* b is discharging */
+ {
+ ret = 1;
+ }
+ else if (b_state != state) /* a is discharging */
+ {
+ ret = -1;
+ }
+ else /* both are discharging; least-time-left goes first */
+ {
+ if (!a_time || !b_time) /* known time always trumps unknown time */
+ ret = a_time ? -1 : 1;
+ else if (a_time != b_time)
+ ret = a_time < b_time ? -1 : 1;
+ else
+ ret = a_percentage < b_percentage ? -1 : 1;
+ }
+ }
+
+ state = UP_DEVICE_STATE_CHARGING;
+ if (!ret && (((a_state == state) && a_time) ||
+ ((b_state == state) && b_time)))
+ {
+ if (a_state != state) /* b is charging */
+ {
+ ret = 1;
+ }
+ else if (b_state != state) /* a is charging */
+ {
+ ret = -1;
+ }
+ else /* both are discharging; most-time-to-charge goes first */
+ {
+ if (!a_time || !b_time) /* known time always trumps unknown time */
+ ret = a_time ? -1 : 1;
+ else if (a_time != b_time)
+ ret = a_time > b_time ? -1 : 1;
+ else
+ ret = a_percentage < b_percentage ? -1 : 1;
+ }
+ }
+
+ if (!ret) /* neither device is charging nor discharging... */
+ {
+ const int weight_a = get_device_kind_weight (a);
+ const int weight_b = get_device_kind_weight (b);
+
+ if (weight_a > weight_b)
+ {
+ ret = -1;
+ }
+ else if (weight_a < weight_b)
+ {
+ ret = 1;
+ }
+ }
+
+ if (!ret)
+ ret = a_state - b_state;
+
+ return ret;
+}
+
+static void
+dispose_devices (IndicatorPowerService * self)
+{
+ priv_t * p = self->priv;
+
+ g_clear_object (&p->primary_device);
+ g_list_free_full (p->devices, g_object_unref);
+ p->devices = NULL;
+}
+
+static void
+on_devices_changed (IndicatorPowerService * self)
+{
+ priv_t * p = self->priv;
+
+ /* update the device list */
+ g_list_free_full (p->devices, (GDestroyNotify)g_object_unref);
+ p->devices = indicator_power_device_provider_get_devices (p->device_provider);
+
+ /* update the primary device */
+ g_clear_object (&p->primary_device);
+ p->primary_device = indicator_power_service_choose_primary_device (p->devices);
+
+ rebuild_now (self, SECTION_HEADER | SECTION_DEVICES);
+}
+
+/***
+****
+**** HEADER SECTION
+****
+***/
+
+static void
+count_batteries (GList * devices, int *total, int *inuse)
+{
+ GList * l;
+
+ for (l=devices; l!=NULL; l=l->next)
+ {
+ const IndicatorPowerDevice * device = INDICATOR_POWER_DEVICE(l->data);
+
+ if (indicator_power_device_get_kind(device) == UP_DEVICE_KIND_BATTERY ||
+ indicator_power_device_get_kind(device) == UP_DEVICE_KIND_UPS)
+ {
+ ++*total;
+
+ const UpDeviceState state = indicator_power_device_get_state (device);
+ if ((state == UP_DEVICE_STATE_CHARGING) ||
+ (state == UP_DEVICE_STATE_DISCHARGING))
+ ++*inuse;
+ }
+ }
+
+ g_debug ("count_batteries found %d batteries (%d are charging/discharging)",
+ *total, *inuse);
+}
+
+static gboolean
+should_be_visible (IndicatorPowerService * self)
+{
+ gboolean visible = TRUE;
+ priv_t * p = self->priv;
+
+ const int policy = g_settings_get_enum (p->settings, SETTINGS_ICON_POLICY_S);
+ g_debug ("policy is: %d (present==0, charge==1, never==2)", policy);
+
+ if (policy == POWER_INDICATOR_ICON_POLICY_NEVER)
+ {
+ visible = FALSE;
+ }
+ else
+ {
+ int batteries=0, inuse=0;
+
+ count_batteries (p->devices, &batteries, &inuse);
+
+ if (policy == POWER_INDICATOR_ICON_POLICY_PRESENT)
+ {
+ visible = batteries > 0;
+ }
+ else if (policy == POWER_INDICATOR_ICON_POLICY_CHARGE)
+ {
+ visible = inuse > 0;
+ }
+ }
+
+ g_debug ("should_be_visible: %s", visible?"yes":"no");
+ return visible;
+}
+
+static GVariant *
+create_header_state (IndicatorPowerService * self)
+{
+ GVariantBuilder b;
+ gchar * label = NULL;
+ gchar * a11y = NULL;
+ GIcon * icon = NULL;
+ priv_t * p = self->priv;
+
+ if (p->primary_device != NULL)
+ {
+ gchar * details;
+
+ indicator_power_device_get_time_details (p->primary_device,
+ &label,
+ &details,
+ &a11y);
+
+ icon = indicator_power_device_get_gicon (p->primary_device);
+
+ g_free (details);
+ }
+
+ g_variant_builder_init (&b, G_VARIANT_TYPE("a{sv}"));
+
+ g_variant_builder_add (&b, "{sv}", "visible",
+ g_variant_new_boolean (should_be_visible (self)));
+
+ if (label != NULL)
+ {
+ if (g_settings_get_boolean (p->settings, SETTINGS_SHOW_TIME_S))
+ g_variant_builder_add (&b, "{sv}", "label",
+ g_variant_new_string (label));
+
+ g_free (label);
+ }
+
+ if (icon != NULL)
+ {
+ g_variant_builder_add (&b, "{sv}", "icon", g_icon_serialize (icon));
+
+ g_object_unref (icon);
+ }
+
+ if (a11y != NULL)
+ {
+ g_variant_builder_add (&b, "{sv}", "accessible-desc",
+ g_variant_new_string (a11y));
+
+ g_free (a11y);
+ }
+
+ return g_variant_builder_end (&b);
+}
+
+
+/***
+****
+**** DEVICE SECTION
+****
+***/
+
+static void
+append_device_to_menu (GMenu * menu, const IndicatorPowerDevice * device)
+{
+ const UpDeviceKind kind = indicator_power_device_get_kind (device);
+
+ if (kind != UP_DEVICE_KIND_LINE_POWER)
+ {
+ char * brief;
+ char * label;
+ char * a11y;
+ GMenuItem * menu_item;
+ GIcon * icon = indicator_power_device_get_gicon (device);
+
+ indicator_power_device_get_time_details (device,
+ &brief,
+ &label,
+ &a11y);
+
+ menu_item = g_menu_item_new (label, "indicator.activate-statistics");
+
+ if (icon != NULL)
+ {
+ g_menu_item_set_attribute_value (menu_item,
+ G_MENU_ATTRIBUTE_ICON,
+ g_icon_serialize (icon));
+ }
+
+ g_menu_append_item (menu, menu_item);
+ g_object_unref (menu_item);
+
+ g_clear_object (&icon);
+ g_free (brief);
+ g_free (label);
+ g_free (a11y);
+ }
+}
+
+
+static GMenuModel *
+create_devices_section (IndicatorPowerService * self)
+{
+ GList * l;
+ GMenu * menu = g_menu_new ();
+
+ for (l=self->priv->devices; l!=NULL; l=l->next)
+ append_device_to_menu (menu, l->data);
+
+ return G_MENU_MODEL (menu);
+}
+
+
+/***
+****
+**** SETTINGS SECTION
+****
+***/
+
+static GMenuModel *
+create_settings_section (IndicatorPowerService * self G_GNUC_UNUSED)
+{
+ GMenu * menu = g_menu_new ();
+
+ g_menu_append (menu,
+ _("Show Time in Menu Bar"),
+ "indicator.show-time");
+
+ g_menu_append (menu,
+ _("Power Settings\342\200\246"),
+ "indicator.activate-settings");
+
+ return G_MENU_MODEL (menu);
+}
+
+/***
+****
+****
+***/
+
+/**
+ * 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 (IndicatorPowerService * self, guint sections)
+{
+ priv_t * p = self->priv;
+ struct ProfileMenuInfo * desktop = &p->menus[PROFILE_DESKTOP];
+ struct ProfileMenuInfo * greeter = &p->menus[PROFILE_GREETER];
+
+ if (p->conn == NULL) /* we haven't built the menus yet */
+ return;
+
+ if (sections & SECTION_HEADER)
+ {
+ g_simple_action_set_state (p->header_action, create_header_state (self));
+ }
+
+ if (sections & SECTION_DEVICES)
+ {
+ rebuild_section (desktop->submenu, 0, create_devices_section (self));
+ rebuild_section (greeter->submenu, 0, create_devices_section (self));
+ }
+
+ if (sections & SECTION_SETTINGS)
+ {
+ rebuild_section (desktop->submenu, 1, create_settings_section (self));
+ }
+}
+
+static void
+create_menu (IndicatorPowerService * self, int profile)
+{
+ GMenu * menu;
+ GMenu * submenu;
+ GMenuItem * header;
+ GMenuModel * sections[16];
+ guint i;
+ guint n = 0;
+
+ g_assert (0<=profile && profile<N_PROFILES);
+ g_assert (self->priv->menus[profile].menu == NULL);
+
+ if (profile == PROFILE_DESKTOP)
+ {
+ sections[n++] = create_devices_section (self);
+ sections[n++] = create_settings_section (self);
+ }
+ else if (profile == PROFILE_GREETER)
+ {
+ sections[n++] = create_devices_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
+***/
+
+/* Run a particular program based on an activation */
+static void
+execute_command (const gchar * cmd)
+{
+ GError * err = NULL;
+
+ g_debug ("Issuing command '%s'", cmd);
+
+ if (!g_spawn_command_line_async (cmd, &err))
+ {
+ g_warning ("Unable to start %s: %s", cmd, err->message);
+ g_error_free (err);
+ }
+}
+
+static void
+on_settings_activated (GSimpleAction * a G_GNUC_UNUSED,
+ GVariant * param G_GNUC_UNUSED,
+ gpointer gself G_GNUC_UNUSED)
+{
+ execute_command ("gnome-control-center power");
+}
+
+static void
+on_statistics_activated (GSimpleAction * a G_GNUC_UNUSED,
+ GVariant * param G_GNUC_UNUSED,
+ gpointer gself G_GNUC_UNUSED)
+{
+ execute_command ("gnome-power-statistics");
+}
+
+static void
+set_show_time_flag (IndicatorPowerService * self, gboolean b)
+{
+ GVariant * v;
+ priv_t * p = self->priv;
+
+ /* update the settings */
+ if (b != g_settings_get_boolean (p->settings, SETTINGS_SHOW_TIME_S))
+ g_settings_set_boolean (p->settings, SETTINGS_SHOW_TIME_S, b);
+
+ /* update the action state */
+ v = g_action_get_state (G_ACTION(p->show_time_action));
+ if (b != g_variant_get_boolean (v))
+ g_simple_action_set_state (p->show_time_action, g_variant_new_boolean (b));
+ g_variant_unref (v);
+
+ rebuild_header_now (self);
+}
+static void
+on_show_time_setting_changed (GSettings * settings, gchar * key, gpointer gself)
+{
+ set_show_time_flag (gself, g_settings_get_boolean (settings, key));
+}
+static void
+on_show_time_action_state_changed (GAction * action,
+ GParamSpec * pspec G_GNUC_UNUSED,
+ gpointer gself)
+{
+ GVariant * v = g_action_get_state (action);
+ set_show_time_flag (gself, g_variant_get_boolean (v));
+ g_variant_unref (v);
+}
+
+/* toggles the state */
+static void
+on_show_time_action_activated (GSimpleAction * simple,
+ GVariant * parameter G_GNUC_UNUSED,
+ gpointer unused G_GNUC_UNUSED)
+{
+ GVariant * v = g_action_get_state (G_ACTION (simple));
+ gboolean flag = g_variant_get_boolean (v);
+ g_simple_action_set_state (simple, g_variant_new_boolean (!flag));
+ g_variant_unref (v);
+}
+
+static void
+init_gactions (IndicatorPowerService * self)
+{
+ GSimpleAction * a;
+ gboolean show_time;
+ priv_t * p = self->priv;
+
+ GActionEntry entries[] = {
+ { "activate-settings", on_settings_activated },
+ { "activate-statistics", on_statistics_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 the header action */
+ a = g_simple_action_new_stateful ("_header", NULL, create_header_state (self));
+ g_simple_action_group_insert (p->actions, G_ACTION(a));
+ p->header_action = a;
+
+ /* add the show-time action */
+ show_time = g_settings_get_boolean (p->settings, SETTINGS_SHOW_TIME_S);
+ a = g_simple_action_new_stateful ("show-time",
+ NULL,
+ g_variant_new_boolean(show_time));
+ g_signal_connect (a, "activate",
+ G_CALLBACK(on_show_time_action_activated), self);
+ g_signal_connect (a, "notify",
+ G_CALLBACK(on_show_time_action_state_changed), self);
+ g_simple_action_group_insert (p->actions, G_ACTION(a));
+ p->show_time_action = a;
+
+ rebuild_header_now (self);
+}
+
+/***
+**** GDBus
+***/
+
+static void
+on_bus_acquired (GDBusConnection * connection,
+ const gchar * name,
+ gpointer gself)
+{
+ int i;
+ guint id;
+ GError * err = NULL;
+ IndicatorPowerService * self = INDICATOR_POWER_SERVICE(gself);
+ priv_t * p = self->priv;
+ GString * path = g_string_new (NULL);
+
+ 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)
+ {
+ struct ProfileMenuInfo * menu = &p->menus[i];
+
+ g_string_printf (path, "%s/%s", BUS_PATH, menu_names[i]);
+
+ if (menu->menu == NULL)
+ create_menu (self, i);
+
+ if ((id = g_dbus_connection_export_menu_model (connection,
+ path->str,
+ G_MENU_MODEL (menu->menu),
+ &err)))
+ {
+ menu->export_id = id;
+ }
+ else
+ {
+ g_warning ("cannot export %s menu: %s", path->str, err->message);
+ g_clear_error (&err);
+ }
+ }
+
+ g_string_free (path, TRUE);
+}
+
+static void
+unexport (IndicatorPowerService * 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)
+{
+ IndicatorPowerService * self = INDICATOR_POWER_SERVICE (gself);
+
+ g_debug ("%s %s name lost %s", G_STRLOC, G_STRFUNC, name);
+
+ unexport (self);
+
+ g_signal_emit (self, signals[SIGNAL_NAME_LOST], 0, NULL);
+}
+
+
+/***
+**** GObject virtual functions
+***/
+
+static void
+my_constructed (GObject * o)
+{
+ GBusNameOwnerFlags owner_flags;
+ IndicatorPowerService * self = INDICATOR_POWER_SERVICE(o);
+ priv_t * p = self->priv;
+
+ /* own the name in constructed() instead of init() so that
+ we'll know the value of the 'replace' property */
+ owner_flags = G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT;
+ if (p->replace)
+ owner_flags |= G_BUS_NAME_OWNER_FLAGS_REPLACE;
+
+ p->own_id = g_bus_own_name (G_BUS_TYPE_SESSION,
+ BUS_NAME,
+ owner_flags,
+ on_bus_acquired,
+ NULL,
+ on_name_lost,
+ self,
+ NULL);
+}
+
+static void
+my_get_property (GObject * o,
+ guint property_id,
+ GValue * value,
+ GParamSpec * pspec)
+{
+ IndicatorPowerService * self = INDICATOR_POWER_SERVICE (o);
+ priv_t * p = self->priv;
+
+ switch (property_id)
+ {
+ case PROP_REPLACE:
+ g_value_set_boolean (value, p->replace);
+ break;
+
+ case PROP_DEVICE_PROVIDER:
+ g_value_set_object (value, p->device_provider);
+ 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)
+{
+ IndicatorPowerService * self = INDICATOR_POWER_SERVICE (o);
+
+ switch (property_id)
+ {
+ case PROP_REPLACE:
+ self->priv->replace = g_value_get_boolean (value);
+ break;
+
+ case PROP_DEVICE_PROVIDER:
+ indicator_power_service_set_device_provider (self, g_value_get_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (o, property_id, pspec);
+ }
+}
+
+static void
+my_dispose (GObject * o)
+{
+ IndicatorPowerService * self = INDICATOR_POWER_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->settings != NULL)
+ {
+ g_signal_handlers_disconnect_by_data (p->settings, self);
+
+ g_clear_object (&p->settings);
+ }
+
+ if (p->show_time_action != NULL)
+ {
+ g_signal_handlers_disconnect_by_data (p->show_time_action, self);
+
+ g_clear_object (&p->show_time_action);
+ }
+
+ g_clear_object (&p->header_action);
+ g_clear_object (&p->show_time_action);
+ g_clear_object (&p->actions);
+
+ g_clear_object (&p->conn);
+
+ indicator_power_service_set_device_provider (self, NULL);
+
+ G_OBJECT_CLASS (indicator_power_service_parent_class)->dispose (o);
+}
+
+/***
+**** Instantiation
+***/
+
+static void
+indicator_power_service_init (IndicatorPowerService * self)
+{
+ priv_t * p = G_TYPE_INSTANCE_GET_PRIVATE (self,
+ INDICATOR_TYPE_POWER_SERVICE,
+ IndicatorPowerServicePrivate);
+ self->priv = p;
+
+ p->cancellable = g_cancellable_new ();
+
+ p->settings = g_settings_new ("com.canonical.indicator.power");
+
+ init_gactions (self);
+
+ g_signal_connect_swapped (p->settings, "changed::" SETTINGS_ICON_POLICY_S,
+ G_CALLBACK(rebuild_header_now), self);
+ g_signal_connect (p->settings, "changed::" SETTINGS_SHOW_TIME_S,
+ G_CALLBACK(on_show_time_setting_changed), self);
+}
+
+static void
+indicator_power_service_class_init (IndicatorPowerServiceClass * klass)
+{
+ GObjectClass * object_class = G_OBJECT_CLASS (klass);
+
+ object_class->dispose = my_dispose;
+ object_class->constructed = my_constructed;
+ object_class->get_property = my_get_property;
+ object_class->set_property = my_set_property;
+
+ g_type_class_add_private (klass, sizeof (IndicatorPowerServicePrivate));
+
+ signals[SIGNAL_NAME_LOST] = g_signal_new (
+ INDICATOR_POWER_SERVICE_SIGNAL_NAME_LOST,
+ G_TYPE_FROM_CLASS(klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (IndicatorPowerServiceClass, name_lost),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ properties[PROP_0] = NULL;
+
+ properties[PROP_REPLACE] = g_param_spec_boolean ("replace",
+ "Replace Service",
+ "Replace existing service",
+ FALSE,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_DEVICE_PROVIDER] = g_param_spec_object ("device-provider",
+ "Device Provider",
+ "Source for power devices",
+ G_TYPE_OBJECT,
+ G_PARAM_READWRITE |
+ G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties (object_class, PROP_LAST, properties);
+}
+
+/***
+**** Public API
+***/
+
+IndicatorPowerService *
+indicator_power_service_new (gboolean replace,
+ IndicatorPowerDeviceProvider * device_provider)
+{
+ GObject * o = g_object_new (INDICATOR_TYPE_POWER_SERVICE,
+ "replace", replace,
+ "device-provider", device_provider,
+ NULL);
+
+ return INDICATOR_POWER_SERVICE (o);
+}
+
+void
+indicator_power_service_set_device_provider (IndicatorPowerService * self,
+ IndicatorPowerDeviceProvider * dp)
+{
+ priv_t * p;
+
+ g_return_if_fail (INDICATOR_IS_POWER_SERVICE (self));
+ g_return_if_fail (!dp || INDICATOR_IS_POWER_DEVICE_PROVIDER (dp));
+ p = self->priv;
+
+ if (p->device_provider != NULL)
+ {
+ g_signal_handlers_disconnect_by_func (p->device_provider,
+ G_CALLBACK(on_devices_changed), self);
+ g_clear_object (&p->device_provider);
+
+ dispose_devices (self);
+ }
+
+ if (dp != NULL)
+ {
+ p->device_provider = g_object_ref (dp);
+
+ g_signal_connect_swapped (p->device_provider, "devices-changed",
+ G_CALLBACK(on_devices_changed), self);
+
+ on_devices_changed (self);
+ }
+}
+
+IndicatorPowerDevice *
+indicator_power_service_choose_primary_device (GList * devices)
+{
+ IndicatorPowerDevice * primary = NULL;
+
+ if (devices != NULL)
+ {
+ GList * tmp;
+
+ tmp = g_list_copy (devices);
+ tmp = g_list_sort (tmp, device_compare_func);
+ primary = g_object_ref (tmp->data);
+
+ g_list_free (tmp);
+ }
+
+ return primary;
+}
diff --git a/src/service.h b/src/service.h
new file mode 100644
index 0000000..77cc362
--- /dev/null
+++ b/src/service.h
@@ -0,0 +1,79 @@
+/*
+ * 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/>.
+ */
+
+#ifndef __INDICATOR_POWER_SERVICE_H__
+#define __INDICATOR_POWER_SERVICE_H__
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include "device-provider.h"
+
+G_BEGIN_DECLS
+
+/* standard GObject macros */
+#define INDICATOR_POWER_SERVICE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), INDICATOR_TYPE_POWER_SERVICE, IndicatorPowerService))
+#define INDICATOR_TYPE_POWER_SERVICE (indicator_power_service_get_type())
+#define INDICATOR_IS_POWER_SERVICE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), INDICATOR_TYPE_POWER_SERVICE))
+
+typedef struct _IndicatorPowerService IndicatorPowerService;
+typedef struct _IndicatorPowerServiceClass IndicatorPowerServiceClass;
+typedef struct _IndicatorPowerServicePrivate IndicatorPowerServicePrivate;
+
+/* signal keys */
+#define INDICATOR_POWER_SERVICE_SIGNAL_NAME_LOST "name-lost"
+
+/**
+ * The Indicator Power Service.
+ */
+struct _IndicatorPowerService
+{
+ /*< private >*/
+ GObject parent;
+ IndicatorPowerServicePrivate * priv;
+};
+
+struct _IndicatorPowerServiceClass
+{
+ GObjectClass parent_class;
+
+ /* signals */
+
+ void (* name_lost)(IndicatorPowerService * self);
+};
+
+/***
+****
+***/
+
+GType indicator_power_service_get_type (void);
+
+IndicatorPowerService * indicator_power_service_new (gboolean replace,
+ IndicatorPowerDeviceProvider * provider);
+
+void indicator_power_service_set_device_provider (IndicatorPowerService * self,
+ IndicatorPowerDeviceProvider * provider);
+
+IndicatorPowerDevice * indicator_power_service_choose_primary_device (GList * devices);
+
+
+
+G_END_DECLS
+
+#endif /* __INDICATOR_POWER_SERVICE_H__ */