Add StatusNotifier support to the Notification Area applet

The StatusNotifier part of the implementation is based off
gnome-panel's status-notifier applet.

1 files changed, 487 insertions, 0 deletions

diff --git a/applets/notification_area/status-notifier/sn-host-v0.c b/applets/notification_area/status-notifier/sn-host-v0.c
new file mode 100644
index 00000000..eeab0254
--- /dev/null
+++ b/applets/notification_area/status-notifier/sn-host-v0.c
@@ -0,0 +1,487 @@
+/*
+ * Copyright (C) 2016 Alberts Muktupāvels
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "sn-host-v0.h"
+#include "sn-item-v0.h"
+#include "sn-watcher-v0-gen.h"
+
+#define SN_HOST_BUS_NAME "org.kde.StatusNotifierHost"
+#define SN_HOST_OBJECT_PATH "/StatusNotifierHost"
+#define SN_ITEM_OBJECT_PATH "/StatusNotifierItem"
+#define SN_WATCHER_BUS_NAME "org.kde.StatusNotifierWatcher"
+#define SN_WATCHER_OBJECT_PATH "/StatusNotifierWatcher"
+
+struct _SnHostV0
+{
+  SnHostV0GenSkeleton  parent;
+
+  gchar               *bus_name;
+  gchar               *object_path;
+  guint                bus_name_id;
+
+  GCancellable        *cancellable;
+
+  guint                watcher_id;
+  SnWatcherV0Gen      *watcher;
+
+  GSList              *items;
+
+  gint                 icon_padding;
+  gint                 icon_size;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_ICON_PADDING,
+  PROP_ICON_SIZE,
+
+  LAST_PROP
+};
+
+static void sn_host_v0_gen_init (SnHostV0GenIface *iface);
+static void na_host_init        (NaHostInterface  *iface);
+
+G_DEFINE_TYPE_WITH_CODE (SnHostV0, sn_host_v0, SN_TYPE_HOST_V0_GEN_SKELETON,
+                         G_IMPLEMENT_INTERFACE (SN_TYPE_HOST_V0_GEN, sn_host_v0_gen_init)
+                         G_IMPLEMENT_INTERFACE (NA_TYPE_HOST, na_host_init))
+
+static void
+sn_host_v0_gen_init (SnHostV0GenIface *iface)
+{
+}
+
+static void
+na_host_init (NaHostInterface *iface)
+{
+}
+
+static void
+get_bus_name_and_object_path (const gchar  *service,
+                              gchar       **bus_name,
+                              gchar       **object_path)
+{
+  gchar *tmp;
+
+  g_assert (*bus_name == NULL);
+  g_assert (*object_path == NULL);
+
+  tmp = g_strstr_len (service, -1, "/");
+  if (tmp != NULL)
+    {
+      gchar **strings;
+
+      strings = g_strsplit (service, "/", 2);
+
+      *bus_name = g_strdup (strings[0]);
+      *object_path = g_strdup (tmp);
+
+      g_strfreev (strings);
+    }
+  else
+    {
+      *bus_name = g_strdup (service);
+      *object_path = g_strdup (SN_ITEM_OBJECT_PATH);
+    }
+}
+
+static void
+ready_cb (SnItem   *item,
+          SnHostV0 *v0)
+{
+  na_host_emit_item_added (NA_HOST (v0), NA_ITEM (item));
+}
+
+static void
+add_registered_item (SnHostV0    *v0,
+                     const gchar *service)
+{
+  gchar *bus_name;
+  gchar *object_path;
+  SnItem *item;
+
+  bus_name = NULL;
+  object_path = NULL;
+
+  get_bus_name_and_object_path (service, &bus_name, &object_path);
+
+  item = sn_item_v0_new (bus_name, object_path);
+  g_object_ref_sink (item);
+
+  g_object_bind_property (v0, "icon-padding", item, "margin",
+                          G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
+  g_object_bind_property (v0, "icon-size", item, "icon-size",
+                          G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
+
+  v0->items = g_slist_prepend (v0->items, item);
+  g_signal_connect (item, "ready", G_CALLBACK (ready_cb), v0);
+
+  g_free (bus_name);
+  g_free (object_path);
+}
+
+static void
+item_registered_cb (SnWatcherV0Gen *watcher,
+                    const gchar    *service,
+                    SnHostV0       *v0)
+{
+  add_registered_item (v0, service);
+}
+
+static void
+item_unregistered_cb (SnWatcherV0Gen *watcher,
+                      const gchar    *service,
+                      SnHostV0       *v0)
+{
+  GSList *l;
+
+  for (l = v0->items; l != NULL; l = g_slist_next (l))
+    {
+      SnItem *item;
+      gboolean found;
+      gchar *bus_name;
+      gchar *object_path;
+
+      item = SN_ITEM (l->data);
+
+      found = FALSE;
+      bus_name = NULL;
+      object_path = NULL;
+
+      get_bus_name_and_object_path (service, &bus_name, &object_path);
+
+      if (g_strcmp0 (sn_item_get_bus_name (item), bus_name) == 0 &&
+          g_strcmp0 (sn_item_get_object_path (item), object_path) == 0)
+        {
+          v0->items = g_slist_remove (v0->items, item);
+          na_host_emit_item_removed (NA_HOST (v0), NA_ITEM (item));
+          g_object_unref (item);
+
+          found = TRUE;
+        }
+
+      g_free (bus_name);
+      g_free (object_path);
+
+      if (found)
+        break;
+    }
+}
+
+static void
+register_host_cb (GObject      *source_object,
+                  GAsyncResult *res,
+                  gpointer      user_data)
+{
+  GError *error;
+  SnHostV0 *v0;
+  gchar **items;
+  gint i;
+
+  error = NULL;
+  sn_watcher_v0_gen_call_register_host_finish (SN_WATCHER_V0_GEN (source_object),
+                                               res, &error);
+
+  if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+    {
+      g_error_free (error);
+      return;
+    }
+
+  v0 = SN_HOST_V0 (user_data);
+
+  if (error)
+    {
+      g_warning ("%s", error->message);
+      g_error_free (error);
+
+      return;
+    }
+
+  g_signal_connect (v0->watcher, "item-registered",
+                    G_CALLBACK (item_registered_cb), v0);
+
+  g_signal_connect (v0->watcher, "item-unregistered",
+                    G_CALLBACK (item_unregistered_cb), v0);
+
+  items = sn_watcher_v0_gen_dup_registered_items (v0->watcher);
+
+  for (i = 0; items[i] != NULL; i++)
+    add_registered_item (v0, items[i]);
+
+  g_strfreev (items);
+}
+
+static void
+proxy_ready_cb (GObject      *source_object,
+                GAsyncResult *res,
+                gpointer      user_data)
+{
+  GError *error;
+  SnWatcherV0Gen *watcher;
+  SnHostV0 *v0;
+
+  error = NULL;
+  watcher = sn_watcher_v0_gen_proxy_new_finish (res, &error);
+
+  if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+    {
+      g_error_free (error);
+      return;
+    }
+
+  v0 = SN_HOST_V0 (user_data);
+  v0->watcher = watcher;
+
+  if (error)
+    {
+      g_warning ("%s", error->message);
+      g_error_free (error);
+
+      return;
+    }
+
+  sn_watcher_v0_gen_call_register_host (v0->watcher, v0->object_path,
+                                        v0->cancellable, register_host_cb, v0);
+}
+
+static void
+name_appeared_cb (GDBusConnection *connection,
+                  const gchar     *name,
+                  const gchar     *name_owner,
+                  gpointer         user_data)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (user_data);
+
+  g_assert (v0->cancellable == NULL);
+  v0->cancellable = g_cancellable_new ();
+
+  sn_watcher_v0_gen_proxy_new (connection, G_DBUS_PROXY_FLAGS_NONE,
+                               SN_WATCHER_BUS_NAME, SN_WATCHER_OBJECT_PATH,
+                               v0->cancellable, proxy_ready_cb, user_data);
+}
+
+static void
+emit_item_removed_signal (gpointer data,
+                          gpointer user_data)
+{
+  na_host_emit_item_removed (NA_HOST (user_data), NA_ITEM (data));
+}
+
+static void
+name_vanished_cb (GDBusConnection *connection,
+                  const gchar     *name,
+                  gpointer         user_data)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (user_data);
+
+  g_cancellable_cancel (v0->cancellable);
+  g_clear_object (&v0->cancellable);
+
+  g_clear_object (&v0->watcher);
+
+  if (v0->items)
+    {
+      g_slist_foreach (v0->items, emit_item_removed_signal, v0);
+      g_slist_free_full (v0->items, g_object_unref);
+      v0->items = NULL;
+    }
+}
+
+static void
+bus_acquired_cb (GDBusConnection *connection,
+                 const gchar     *name,
+                 gpointer         user_data)
+{
+  SnHostV0 *v0;
+  GDBusInterfaceSkeleton *skeleton;
+  GError *error;
+
+  v0 = SN_HOST_V0 (user_data);
+  skeleton = G_DBUS_INTERFACE_SKELETON (v0);
+
+  error = NULL;
+  g_dbus_interface_skeleton_export (skeleton, connection,
+                                    v0->object_path, &error);
+
+  if (error != NULL)
+    {
+      g_warning ("%s", error->message);
+      g_error_free (error);
+
+      return;
+    }
+
+  v0->watcher_id = g_bus_watch_name (G_BUS_TYPE_SESSION, SN_WATCHER_BUS_NAME,
+                                     G_BUS_NAME_WATCHER_FLAGS_NONE,
+                                     name_appeared_cb, name_vanished_cb,
+                                     v0, NULL);
+}
+
+static void
+sn_host_v0_get_property (GObject    *object,
+                         guint       property_id,
+                         GValue     *value,
+                         GParamSpec *pspec)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (object);
+
+  switch (property_id)
+    {
+      case PROP_ICON_PADDING:
+        g_value_set_int (value, v0->icon_padding);
+        break;
+
+      case PROP_ICON_SIZE:
+        g_value_set_int (value, v0->icon_size);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+sn_host_v0_set_property (GObject      *object,
+                         guint         property_id,
+                         const GValue *value,
+                         GParamSpec   *pspec)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (object);
+
+  switch (property_id)
+    {
+      case PROP_ICON_PADDING:
+        v0->icon_padding = g_value_get_int (value);
+        break;
+
+      case PROP_ICON_SIZE:
+        v0->icon_size = g_value_get_int (value);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+install_properties (GObjectClass *object_class)
+{
+  /* NaHost properties */
+  g_object_class_override_property (object_class, PROP_ICON_PADDING, "icon-padding");
+  g_object_class_override_property (object_class, PROP_ICON_SIZE, "icon-size");
+}
+
+static void
+sn_host_v0_dispose (GObject *object)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (object);
+
+  if (v0->bus_name_id > 0)
+    {
+      g_bus_unown_name (v0->bus_name_id);
+      v0->bus_name_id = 0;
+    }
+
+  if (v0->watcher_id > 0)
+    {
+      g_bus_unwatch_name (v0->watcher_id);
+      v0->watcher_id = 0;
+    }
+
+  g_cancellable_cancel (v0->cancellable);
+  g_clear_object (&v0->cancellable);
+
+  g_clear_object (&v0->watcher);
+
+  if (v0->items)
+    {
+      g_slist_foreach (v0->items, emit_item_removed_signal, v0);
+      g_slist_free_full (v0->items, g_object_unref);
+      v0->items = NULL;
+    }
+
+  G_OBJECT_CLASS (sn_host_v0_parent_class)->dispose (object);
+}
+
+static void
+sn_host_v0_finalize (GObject *object)
+{
+  SnHostV0 *v0;
+
+  v0 = SN_HOST_V0 (object);
+
+  g_clear_pointer (&v0->bus_name, g_free);
+  g_clear_pointer (&v0->object_path, g_free);
+
+  G_OBJECT_CLASS (sn_host_v0_parent_class)->finalize (object);
+}
+
+static void
+sn_host_v0_class_init (SnHostV0Class *v0_class)
+{
+  GObjectClass *object_class;
+
+  object_class = G_OBJECT_CLASS (v0_class);
+
+  object_class->dispose = sn_host_v0_dispose;
+  object_class->finalize = sn_host_v0_finalize;
+  object_class->get_property = sn_host_v0_get_property;
+  object_class->set_property = sn_host_v0_set_property;
+
+  install_properties (object_class);
+}
+
+static void
+sn_host_v0_init (SnHostV0 *v0)
+{
+  GBusNameOwnerFlags flags;
+  static guint id;
+
+  flags = G_BUS_NAME_OWNER_FLAGS_NONE;
+  id++;
+
+  v0->bus_name = g_strdup_printf ("%s-%d-%d", SN_HOST_BUS_NAME, getpid (), id);
+  v0->object_path = g_strdup_printf ("%s/%d", SN_HOST_OBJECT_PATH,id);
+
+  v0->bus_name_id = g_bus_own_name (G_BUS_TYPE_SESSION, v0->bus_name, flags,
+                                    bus_acquired_cb, NULL, NULL, v0, NULL);
+
+  v0->icon_size = 16;
+  v0->icon_padding = 0;
+}
+
+NaHost *
+sn_host_v0_new (void)
+{
+  return g_object_new (SN_TYPE_HOST_V0, NULL);
+}