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authorLars Uebernickel <lars.uebernickel@canonical.com>2013-01-18 19:48:04 +0100
committerLars Uebernickel <lars.uebernickel@canonical.com>2013-01-18 19:48:04 +0100
commit3a33240e301a02fa6ee0aa0bd41780a0e3a28633 (patch)
treeeaf5a30bf60208a38b4c4373de96e59cf63639d3 /libindicator/indicator-ng.c
parente7966480ecd14bd6cb4c4ec5f527cfe10a1a0b0f (diff)
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Add IndicatorNg
IndicatorNg is an indicator object that reads an indicator service file and watches the bus for a corresponding service to appear. It turns the menus and actions exported by the service into an indicator entry.
Diffstat (limited to 'libindicator/indicator-ng.c')
-rw-r--r--libindicator/indicator-ng.c444
1 files changed, 444 insertions, 0 deletions
diff --git a/libindicator/indicator-ng.c b/libindicator/indicator-ng.c
new file mode 100644
index 0000000..d0d2177
--- /dev/null
+++ b/libindicator/indicator-ng.c
@@ -0,0 +1,444 @@
+
+#include "indicator-ng.h"
+
+#include <string.h>
+
+struct _IndicatorNg
+{
+ IndicatorObject parent;
+
+ gchar *service_file;
+ gchar *name;
+ gchar *object_path;
+ gchar *profile;
+ gchar *header_action;
+
+ guint name_watch_id;
+
+ GActionGroup *actions;
+ GMenuModel *menu;
+
+ GtkWidget *label;
+ GtkWidget *image;
+ GtkWidget *gtkmenu;
+ gchar *accessible_desc;
+};
+
+static void indicator_ng_initable_iface_init (GInitableIface *initable);
+G_DEFINE_TYPE_WITH_CODE (IndicatorNg, indicator_ng, INDICATOR_OBJECT_TYPE,
+ G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, indicator_ng_initable_iface_init))
+
+enum
+{
+ PROP_0,
+ PROP_SERVICE_FILE,
+ PROP_PROFILE,
+ N_PROPERTIES
+};
+
+static GParamSpec *properties[N_PROPERTIES];
+
+static void
+indicator_ng_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ IndicatorNg *self = INDICATOR_NG (object);
+
+ switch (property_id)
+ {
+ case PROP_SERVICE_FILE:
+ g_value_set_string (value, self->service_file);
+ break;
+
+ case PROP_PROFILE:
+ g_value_set_string (value, self->profile);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+indicator_ng_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ IndicatorNg *self = INDICATOR_NG (object);
+
+ switch (property_id)
+ {
+ case PROP_SERVICE_FILE: /* construct-only */
+ self->service_file = g_strdup (g_value_get_string (value));
+ break;
+
+ case PROP_PROFILE: /* construct-only */
+ self->profile = g_strdup (g_value_get_string (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+indicator_ng_free_actions_and_menu (IndicatorNg *self)
+{
+ if (self->actions)
+ {
+ gtk_widget_insert_action_group (self->gtkmenu, self->name, self->actions);
+ g_signal_handlers_disconnect_by_data (self->actions, self);
+ g_clear_object (&self->actions);
+ }
+
+ if (self->menu)
+ {
+ g_signal_handlers_disconnect_by_data (self->menu, self);
+ g_clear_object (&self->menu);
+ }
+}
+
+static void
+indicator_ng_dispose (GObject *object)
+{
+ IndicatorNg *self = INDICATOR_NG (object);
+
+ if (self->name_watch_id)
+ {
+ g_bus_unwatch_name (self->name_watch_id);
+ self->name_watch_id = 0;
+ }
+
+ indicator_ng_free_actions_and_menu (self);
+
+ g_clear_object (&self->service_file);
+ g_clear_object (&self->label);
+ g_clear_object (&self->image);
+ g_clear_object (&self->gtkmenu);
+
+ G_OBJECT_CLASS (indicator_ng_parent_class)->dispose (object);
+}
+
+static void
+indicator_ng_finalize (GObject *object)
+{
+ IndicatorNg *self = INDICATOR_NG (object);
+
+ g_free (self->service_file);
+ g_free (self->name);
+ g_free (self->object_path);
+ g_free (self->accessible_desc);
+ g_free (self->header_action);
+
+ G_OBJECT_CLASS (indicator_ng_parent_class)->finalize (object);
+}
+
+static GtkLabel *
+indicator_ng_get_label (IndicatorObject *io)
+{
+ IndicatorNg *self = INDICATOR_NG (io);
+
+ gtk_widget_show (self->label);
+
+ return GTK_LABEL (self->label);
+}
+
+static GtkImage *
+indicator_ng_get_image (IndicatorObject *io)
+{
+ IndicatorNg *self = INDICATOR_NG (io);
+
+ gtk_widget_show (self->image);
+
+ return GTK_IMAGE (self->image);
+}
+
+static GtkMenu *
+indicator_ng_get_menu (IndicatorObject *io)
+{
+ IndicatorNg *self = INDICATOR_NG (io);
+
+ return GTK_MENU (self->gtkmenu);
+}
+
+static const gchar *
+indicator_ng_get_accessible_desc (IndicatorObject *io)
+{
+ IndicatorNg *self = INDICATOR_NG (io);
+
+ return self->accessible_desc;
+}
+
+static const gchar *
+indicator_ng_get_name_hint (IndicatorObject *io)
+{
+ IndicatorNg *self = INDICATOR_NG (io);
+
+ return self->name;
+}
+
+static void
+indicator_ng_set_accessible_desc (IndicatorNg *self,
+ const gchar *accessible_desc)
+{
+ GList *entries;
+
+ g_free (self->accessible_desc);
+
+ self->accessible_desc = g_strdup (accessible_desc);
+
+ entries = indicator_object_get_entries (INDICATOR_OBJECT (self));
+ g_return_if_fail (entries != NULL);
+
+ g_signal_emit_by_name (self, INDICATOR_OBJECT_SIGNAL_ACCESSIBLE_DESC_UPDATE, entries->data);
+
+ g_list_free (entries);
+}
+
+static gboolean
+gtk_image_set_from_gicon_string (GtkImage *img,
+ const gchar *str)
+{
+ GIcon *icon;
+ GError *error = NULL;
+
+ icon = str ? g_icon_new_for_string (str, &error) : NULL;
+ if (icon)
+ {
+ gtk_image_set_from_gicon (img, icon, GTK_ICON_SIZE_LARGE_TOOLBAR);
+ g_object_unref (icon);
+ return TRUE;
+ }
+ else
+ {
+ if (error)
+ {
+ g_warning ("invalid icon string '%s': %s", str, error->message);
+ g_error_free (error);
+ }
+ return FALSE;
+ }
+}
+
+static void
+indicator_ng_update_entry (IndicatorNg *self)
+{
+ GVariant *state;
+
+ g_return_if_fail (self->menu != NULL);
+ g_return_if_fail (self->actions != NULL);
+
+ if (!self->header_action ||
+ !g_action_group_has_action (self->actions, self->header_action))
+ {
+ indicator_object_set_visible (INDICATOR_OBJECT (self), FALSE);
+ return;
+ }
+
+ state = g_action_group_get_action_state (self->actions, self->header_action);
+ if (state && g_variant_is_of_type (state, G_VARIANT_TYPE ("(sssb)")))
+ {
+ gchar *label;
+ gchar *iconstr;
+ gchar *accessible_desc;
+ gboolean visible;
+
+ g_variant_get (state, "(sssb)", &label, &iconstr, &accessible_desc, &visible);
+
+ gtk_label_set_label (GTK_LABEL (self->label), label);
+ if (!gtk_image_set_from_gicon_string (GTK_IMAGE (self->image), iconstr))
+ gtk_widget_hide (self->image);
+ indicator_ng_set_accessible_desc (self, accessible_desc);
+ indicator_object_set_visible (INDICATOR_OBJECT (self), visible);
+
+ g_free (label);
+ g_free (iconstr);
+ g_free (accessible_desc);
+ }
+ else
+ g_warning ("the action of the indicator menu item must have state with type (sssb)");
+
+ if (state)
+ g_variant_unref (state);
+}
+
+static void
+indicator_ng_menu_changed (GMenuModel *menu,
+ gint position,
+ gint removed,
+ gint added,
+ gpointer user_data)
+{
+ IndicatorNg *self = user_data;
+
+ g_return_if_fail (position == 0);
+ g_return_if_fail (added < 2 && removed < 2 && added ^ removed);
+
+ if (removed)
+ indicator_object_set_visible (INDICATOR_OBJECT (self), FALSE);
+
+ if (added)
+ {
+ GMenuModel *popup;
+ gchar *action;
+
+ g_clear_pointer (&self->header_action, g_free);
+ g_menu_model_get_item_attribute (self->menu, 0, G_MENU_ATTRIBUTE_ACTION, "s", &action);
+ if (action && g_str_has_prefix (action, "indicator."))
+ self->header_action = g_strdup (action + 10);
+
+ popup = g_menu_model_get_item_link (self->menu, 0, G_MENU_LINK_SUBMENU);
+ if (popup)
+ {
+ gtk_menu_shell_bind_model (GTK_MENU_SHELL (self->gtkmenu), popup, NULL, TRUE);
+ g_object_unref (popup);
+ }
+
+ indicator_ng_update_entry (self);
+
+ g_free (action);
+ }
+}
+
+static void
+indicator_ng_service_appeared (GDBusConnection *connection,
+ const gchar *name,
+ const gchar *name_owner,
+ gpointer user_data)
+{
+ IndicatorNg *self = user_data;
+ gchar *menu_object_path;
+
+ g_assert (!self->actions);
+ g_assert (!self->menu);
+
+ self->actions = G_ACTION_GROUP (g_dbus_action_group_get (connection, name_owner, self->object_path));
+ gtk_widget_insert_action_group (self->gtkmenu, "indicator", self->actions);
+ g_signal_connect_swapped (self->actions, "action-added", G_CALLBACK (indicator_ng_update_entry), self);
+ g_signal_connect_swapped (self->actions, "action-removed", G_CALLBACK (indicator_ng_update_entry), self);
+ g_signal_connect_swapped (self->actions, "action-state-changed", G_CALLBACK (indicator_ng_update_entry), self);
+
+ menu_object_path = g_strconcat (self->object_path, "/", self->profile, NULL);
+ self->menu = G_MENU_MODEL (g_dbus_menu_model_get (connection, name_owner, menu_object_path));
+ g_signal_connect (self->menu, "items-changed", G_CALLBACK (indicator_ng_menu_changed), self);
+ if (g_menu_model_get_n_items (self->menu))
+ indicator_ng_menu_changed (self->menu, 0, 0, 1, self);
+
+ indicator_ng_update_entry (self);
+
+ g_free (menu_object_path);
+}
+
+static void
+indicator_ng_service_vanished (GDBusConnection *connection,
+ const gchar *name,
+ gpointer user_data)
+{
+ IndicatorNg *self = user_data;
+
+ indicator_ng_free_actions_and_menu (self);
+
+ indicator_object_set_visible (INDICATOR_OBJECT (self), FALSE);
+}
+
+static gboolean
+indicator_ng_initable_init (GInitable *initable,
+ GCancellable *cancellable,
+ GError **error)
+{
+ IndicatorNg *self = INDICATOR_NG (initable);
+ GKeyFile *keyfile;
+ gchar *bus_name = NULL;
+
+ keyfile = g_key_file_new ();
+ if (!g_key_file_load_from_file (keyfile,
+ self->service_file,
+ G_KEY_FILE_NONE,
+ error))
+ {
+ g_key_file_free (keyfile);
+ return FALSE;
+ }
+
+ if ((self->name = g_key_file_get_string (keyfile, "Indicator Service", "Name", error)) &&
+ (bus_name = g_key_file_get_string (keyfile, "Indicator Service", "BusName", error)) &&
+ (self->object_path = g_key_file_get_string (keyfile, "Indicator Service", "ObjectPath", error)))
+ {
+
+ self->name_watch_id = g_bus_watch_name (G_BUS_TYPE_SESSION,
+ bus_name,
+ G_BUS_NAME_WATCHER_FLAGS_NONE,
+ indicator_ng_service_appeared,
+ indicator_ng_service_vanished,
+ self, NULL);
+ }
+
+ g_free (bus_name);
+ g_key_file_free (keyfile);
+
+ return self->name_watch_id > 0;
+}
+
+static void
+indicator_ng_class_init (IndicatorNgClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+ IndicatorObjectClass *io_class = INDICATOR_OBJECT_CLASS (class);
+
+ object_class->get_property = indicator_ng_get_property;
+ object_class->set_property = indicator_ng_set_property;
+ object_class->dispose = indicator_ng_dispose;
+ object_class->finalize = indicator_ng_finalize;
+
+ io_class->get_label = indicator_ng_get_label;
+ io_class->get_image = indicator_ng_get_image;
+ io_class->get_menu = indicator_ng_get_menu;
+ io_class->get_accessible_desc = indicator_ng_get_accessible_desc;
+ io_class->get_name_hint = indicator_ng_get_name_hint;
+
+ properties[PROP_SERVICE_FILE] = g_param_spec_string ("service-file",
+ "Service file",
+ "Path of the service file",
+ NULL,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS);
+
+ properties[PROP_PROFILE] = g_param_spec_string ("profile",
+ "Profile",
+ "Indicator profile",
+ "desktop",
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS);
+
+ g_object_class_install_properties(object_class, N_PROPERTIES, properties);
+}
+
+static void
+indicator_ng_initable_iface_init (GInitableIface *initable)
+{
+ initable->init = indicator_ng_initable_init;
+}
+
+static void
+indicator_ng_init (IndicatorNg *self)
+{
+ self->label = g_object_ref_sink (gtk_label_new (NULL));
+ self->image = g_object_ref_sink (gtk_image_new ());
+ self->gtkmenu = g_object_ref_sink (gtk_menu_new ());
+
+ indicator_object_set_visible (INDICATOR_OBJECT (self), FALSE);
+}
+
+IndicatorNg *
+indicator_ng_new (const gchar *service_file,
+ GError **error)
+{
+ return g_initable_new (INDICATOR_TYPE_NG, NULL, error,
+ "service-file", service_file,
+ NULL);
+}