[tepl] App: add option to handle GApplication::activate

[Sébastien Wilmet <swilmet src gnome org>]

commit fdaf3eb6ad5fd96f062aee94226af3284e2a078d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Oct 11 16:25:03 2017 +0200

    App: add option to handle GApplication::activate

 docs/reference/tepl-3.0-sections.txt |    1 +
 tepl/tepl-application.c              |   42 ++++++++++++++++++++++++++++++++++
 tepl/tepl-application.h              |    2 +
 3 files changed, 45 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/tepl-3.0-sections.txt b/docs/reference/tepl-3.0-sections.txt
index 67dac21..64d1162 100644
--- a/docs/reference/tepl-3.0-sections.txt
+++ b/docs/reference/tepl-3.0-sections.txt
@@ -198,6 +198,7 @@ tepl_application_get_app_action_info_store
 tepl_application_get_tepl_action_info_store
 tepl_application_get_active_main_window
 tepl_application_open_simple
+tepl_application_handle_activate
 tepl_application_handle_open
 <SUBSECTION Standard>
 TEPL_APPLICATION
diff --git a/tepl/tepl-application.c b/tepl/tepl-application.c
index 915e2f5..332f780 100644
--- a/tepl/tepl-application.c
+++ b/tepl/tepl-application.c
@@ -42,6 +42,7 @@ struct _TeplApplicationPrivate
        AmtkActionInfoStore *app_action_info_store;
        AmtkActionInfoStore *tepl_action_info_store;
 
+       guint handle_activate : 1;
        guint handle_open : 1;
 };
 
@@ -376,6 +377,47 @@ tepl_application_open_simple (TeplApplication *tepl_app,
 }
 
 static void
+activate_cb (GApplication    *g_app,
+            TeplApplication *tepl_app)
+{
+       TeplAbstractFactory *factory;
+       GtkApplicationWindow *main_window;
+
+       factory = tepl_abstract_factory_get_singleton ();
+       main_window = tepl_abstract_factory_create_main_window (factory, tepl_app->priv->gtk_app);
+       g_return_if_fail (main_window != NULL);
+
+       gtk_widget_show (GTK_WIDGET (main_window));
+}
+
+/**
+ * tepl_application_handle_activate:
+ * @tepl_app: a #TeplApplication.
+ *
+ * Connects a generic function handler for the #GApplication::activate signal.
+ *
+ * It creates a main window with tepl_abstract_factory_create_main_window().
+ *
+ * Since: 3.2
+ */
+void
+tepl_application_handle_activate (TeplApplication *tepl_app)
+{
+       g_return_if_fail (TEPL_IS_APPLICATION (tepl_app));
+
+       if (!tepl_app->priv->handle_activate)
+       {
+               g_signal_connect_object (tepl_app->priv->gtk_app,
+                                        "activate",
+                                        G_CALLBACK (activate_cb),
+                                        tepl_app,
+                                        0);
+
+               tepl_app->priv->handle_activate = TRUE;
+       }
+}
+
+static void
 open_cb (GApplication     *g_app,
         GFile           **files,
         gint              n_files,
diff --git a/tepl/tepl-application.h b/tepl/tepl-application.h
index cc6e530..e79f82a 100644
--- a/tepl/tepl-application.h
+++ b/tepl/tepl-application.h
@@ -71,6 +71,8 @@ GtkApplicationWindow *        tepl_application_get_active_main_window         
(TeplApplication
 void                   tepl_application_open_simple                    (TeplApplication *tepl_app,
                                                                         GFile           *file);
 
+void                   tepl_application_handle_activate                (TeplApplication *tepl_app);
+
 void                   tepl_application_handle_open                    (TeplApplication *tepl_app);
 
 G_END_DECLS