[gnome-todo/wip/gbsneto/plugins] activatable: add GtdActivatable interface

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 5016cc06e458b8faff65f374dd6564488deee1f0
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Dec 13 14:45:32 2015 -0200

    activatable: add GtdActivatable interface
    
    Plugins shall implement this interface in order to
    be loaded and executed.

 src/gtd-types.h                  |    1 +
 src/interfaces/gtd-activatable.c |   67 ++++++++++++++++++++++++++++++++++++++
 src/interfaces/gtd-activatable.h |   46 ++++++++++++++++++++++++++
 3 files changed, 114 insertions(+), 0 deletions(-)
---
diff --git a/src/gtd-types.h b/src/gtd-types.h
index d1b3cc9..4d04315 100644
--- a/src/gtd-types.h
+++ b/src/gtd-types.h
@@ -25,6 +25,7 @@
 
 G_BEGIN_DECLS
 
+typedef struct _GtdActivatable          GtdActivatable;
 typedef struct _GtdApplication          GtdApplication;
 typedef struct _GtdInitialSetupWindow   GtdInitialSetupWindow;
 typedef struct _GtdListView             GtdListView;
diff --git a/src/interfaces/gtd-activatable.c b/src/interfaces/gtd-activatable.c
new file mode 100644
index 0000000..6206097
--- /dev/null
+++ b/src/interfaces/gtd-activatable.c
@@ -0,0 +1,67 @@
+/* gtd-activatable.c
+ *
+ * Copyright (C) 2015 Georges Basile Stavracas Neto <georges stavracas gmail com>
+ *
+ * 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 3 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 "gtd-activatable.h"
+
+G_DEFINE_INTERFACE (GtdActivatable, gtd_activatable, PEAS_TYPE_ACTIVATABLE)
+
+static void
+gtd_activatable_default_init (GtdActivatableInterface *iface)
+{
+  /**
+   * GtdActivatable::panels:
+   *
+   * A list of #GtdPanel this plugin carries.
+   */
+  g_object_interface_install_property (iface,
+                                       g_param_spec_boxed ("panels",
+                                                           "Panels this widget has",
+                                                           "A list of panel this widget has",
+                                                           G_TYPE_POINTER,
+                                                           G_PARAM_READABLE));
+
+  /**
+   * GtdActivatable::providers:
+   *
+   * A list of #GtdProvider this plugin carries.
+   */
+  g_object_interface_install_property (iface,
+                                       g_param_spec_boxed ("providers",
+                                                           "Providers this widget has",
+                                                           "A list of providers this widget has",
+                                                           G_TYPE_POINTER,
+                                                           G_PARAM_READABLE));
+}
+
+GList*
+gtd_activatable_get_panels (GtdActivatable *activatable)
+{
+  g_return_val_if_fail (GTD_IS_ACTIVATABLE (activatable), NULL);
+  g_return_val_if_fail (GTD_ACTIVATABLE_GET_IFACE (activatable)->get_panels, NULL);
+
+  return GTD_ACTIVATABLE_GET_IFACE (activatable)->get_panels (activatable);
+}
+
+GList*
+gtd_activatable_get_providers (GtdActivatable *activatable)
+{
+  g_return_val_if_fail (GTD_IS_ACTIVATABLE (activatable), NULL);
+  g_return_val_if_fail (GTD_ACTIVATABLE_GET_IFACE (activatable)->get_providers, NULL);
+
+  return GTD_ACTIVATABLE_GET_IFACE (activatable)->get_providers (activatable);
+}
diff --git a/src/interfaces/gtd-activatable.h b/src/interfaces/gtd-activatable.h
new file mode 100644
index 0000000..4a14807
--- /dev/null
+++ b/src/interfaces/gtd-activatable.h
@@ -0,0 +1,46 @@
+/* gtd-activatable.h
+ *
+ * Copyright (C) 2015 Georges Basile Stavracas Neto <georges stavracas gmail com>
+ *
+ * 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 3 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/>.
+ */
+
+#ifndef GTD_ACTIVATABLE_H
+#define GTD_ACTIVATABLE_H
+
+#include <glib.h>
+#include <libpeas/peas.h>
+
+G_BEGIN_DECLS
+
+#define GTD_TYPE_ACTIVATABLE (gtd_activatable_get_type ())
+
+G_DECLARE_INTERFACE (GtdActivatable, gtd_activatable, GTD, ACTIVATABLE, PeasActivatable)
+
+struct _GtdActivatableInterface
+{
+  PeasActivatableInterface parent;
+
+  GList*           (*get_panels)                           (GtdActivatable     *activatable);
+
+  GList*           (*get_providers)                        (GtdActivatable     *activatable);
+};
+
+GList*               gtd_activatable_get_panels                  (GtdActivatable     *activatable);
+
+GList*               gtd_activatable_get_providers               (GtdActivatable     *activatable);
+
+G_END_DECLS
+
+#endif /* GTD_ACTIVATABLE_H */