[goffice] Enhance introspection usability

[Jean Bréfort <jbrefort src gnome org>]

commit e56daa9073acb09b83b3013fa415ef07f4dfd9f3
Author: Jean Brefort <jean brefort normalesup org>
Date:   Mon Jan 11 16:44:30 2016 +0100

    Enhance introspection usability

 ChangeLog                  |    8 ++++++++
 goffice/app/go-plugin.c    |    8 ++++----
 goffice/goffice.c          |    1 +
 goffice/graph/gog-object.c |    2 +-
 goffice/math/go-cspline.c  |    2 +-
 5 files changed, 15 insertions(+), 6 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 900c1c0..de88faa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2016-01-11  Jean Brefort  <jean brefort normalesup org>
+
+       * goffice/app/go-plugin.c: add introspection anotations.
+       * goffice/goffice.c (libgoffice_init): initialise GOPluginLoaderModule
+       class to allow plugins initialization through introspection.
+       * goffice/graph/gog-object.c:  add an introspection anotation.
+       * goffice/math/go-cspline.c: typo.
+
 2016-01-01 Andreas J. Guelzow <aguelzow pyrshep ca>
 
        * utils/go-format.c (go_format_output_date_to_odf): write
diff --git a/goffice/app/go-plugin.c b/goffice/app/go-plugin.c
index 94c9c39..76704a4 100644
--- a/goffice/app/go-plugin.c
+++ b/goffice/app/go-plugin.c
@@ -1786,10 +1786,10 @@ go_plugins_set_dirs (GSList *plugin_dirs)
 
 /**
  * go_plugins_init:
- * @context: #GOCmdContext used to report errors
- * @known_states: (element-type char): A list of known states (defined how ?)
- * @active_plugins: (element-type char): A list of active plugins
- * @plugin_dirs: (element-type char): a list of directories to search for plugins
+ * @context: (allow-none): #GOCmdContext used to report errors
+ * @known_states: (allow-none) (element-type char): A list of known states (defined how ?)
+ * @active_plugins: (allow-none) (element-type char): A list of active plugins
+ * @plugin_dirs: (allow-none) (element-type char): a list of directories to search for plugins
  * @activate_new_plugins: activate plugins we have no seen before.
  * @default_loader_type: importer to use by default.
  *
diff --git a/goffice/goffice.c b/goffice/goffice.c
index 44fc279..31e51b6 100644
--- a/goffice/goffice.c
+++ b/goffice/goffice.c
@@ -213,6 +213,7 @@ libgoffice_init (void)
        _goc_plugin_services_init ();
        install_icons ();
 #endif
+       (void) GO_TYPE_PLUGIN_LOADER_MODULE;
        (void) GOG_TYPE_GRAPH;
        (void) GOG_TYPE_CHART;
        (void) GOG_TYPE_PLOT;
diff --git a/goffice/graph/gog-object.c b/goffice/graph/gog-object.c
index d2e96a4..1e3b8cc 100644
--- a/goffice/graph/gog-object.c
+++ b/goffice/graph/gog-object.c
@@ -1810,7 +1810,7 @@ gog_object_add_by_role (GogObject *parent, GogObjectRole const *role, GogObject
  * gog_object_add_by_name:
  * @parent: #GogObject
  * @role:
- * @child: optionally null #GogObject
+ * @child: (transfer full) (allow-none): optionally null #GogObject
  *
  * Returns: (transfer none):  a newly created child of @parent in @role.  If @child is provided,
  * it is assumed to be an unaffiliated object that will be assigned in @role.
diff --git a/goffice/math/go-cspline.c b/goffice/math/go-cspline.c
index 307f6f7..f37bf81 100644
--- a/goffice/math/go-cspline.c
+++ b/goffice/math/go-cspline.c
@@ -82,7 +82,7 @@ GType go_csplinel_get_type (void) { return G_TYPE_NONE; }
  * members of the new structure.
  *
  * Returns: a newly created GOCSpline instance which should be
- * destroyed by a call to go_bezier_spline_destroy.
+ * destroyed by a call to go_cspline_destroy.
  */
 SUFFIX(GOCSpline) *
 SUFFIX(go_cspline_init) (DOUBLE const *x, DOUBLE const *y, int n,