[gnome-software] Allow emitting 'button-clicked' from GsUpdateList

[Richard Hughes <rhughes src gnome org>]

commit b26617e4d56cc04b132f0aeb438507215caaf423
Author: Richard Hughes <richard hughsie com>
Date:   Wed Nov 25 16:35:57 2015 +0000

    Allow emitting 'button-clicked' from GsUpdateList
    
    This is much larger than I wanted it to be, as it meant converting from
    final->derivable.

 src/gs-update-list.c |   51 ++++++++++++++++++++++++++++++++++++++++---------
 src/gs-update-list.h |    9 +++++++-
 2 files changed, 49 insertions(+), 11 deletions(-)
---
diff --git a/src/gs-update-list.c b/src/gs-update-list.c
index 40e24e1..da49992 100644
--- a/src/gs-update-list.c
+++ b/src/gs-update-list.c
@@ -30,28 +30,50 @@
 #include "gs-app.h"
 #include "gs-app-row.h"
 
-struct _GsUpdateList
+typedef struct
 {
-       GtkListBox       parent_instance;
-
        GtkSizeGroup    *sizegroup_image;
        GtkSizeGroup    *sizegroup_name;
+} GsUpdateListPrivate;
+
+enum {
+       SIGNAL_BUTTON_CLICKED,
+       SIGNAL_LAST
 };
 
-G_DEFINE_TYPE (GsUpdateList, gs_update_list, GTK_TYPE_LIST_BOX)
+static guint signals [SIGNAL_LAST] = { 0 };
+
+G_DEFINE_TYPE_WITH_PRIVATE (GsUpdateList, gs_update_list, GTK_TYPE_LIST_BOX)
+
+#define GET_PRIV(o)    gs_update_list_get_instance_private(o)
+
+/**
+ * gs_update_list_button_clicked_cb:
+ **/
+static void
+gs_update_list_button_clicked_cb (GsAppRow *app_row,
+                                 GsUpdateList *update_list)
+{
+       GsApp *app = gs_app_row_get_app (app_row);
+       g_signal_emit (update_list, signals[SIGNAL_BUTTON_CLICKED], 0, app);
+}
 
 void
 gs_update_list_add_app (GsUpdateList *update_list,
                        GsApp   *app)
 {
+       GsUpdateListPrivate *priv = GET_PRIV (update_list);
        GtkWidget *app_row;
 
        app_row = gs_app_row_new (app);
        gs_app_row_set_show_update (GS_APP_ROW (app_row), TRUE);
+       g_signal_connect (app_row, "button-clicked",
+                         G_CALLBACK (gs_update_list_button_clicked_cb),
+                         update_list);
        gtk_container_add (GTK_CONTAINER (update_list), app_row);
        gs_app_row_set_size_groups (GS_APP_ROW (app_row),
-                                   update_list->sizegroup_image,
-                                   update_list->sizegroup_name);
+                                   priv->sizegroup_image,
+                                   priv->sizegroup_name);
        gtk_widget_show (app_row);
 }
 
@@ -171,9 +193,10 @@ static void
 gs_update_list_dispose (GObject *object)
 {
        GsUpdateList *update_list = GS_UPDATE_LIST (object);
+       GsUpdateListPrivate *priv = GET_PRIV (update_list);
 
-       g_clear_object (&update_list->sizegroup_image);
-       g_clear_object (&update_list->sizegroup_name);
+       g_clear_object (&priv->sizegroup_image);
+       g_clear_object (&priv->sizegroup_name);
 
        G_OBJECT_CLASS (gs_update_list_parent_class)->dispose (object);
 }
@@ -181,8 +204,9 @@ gs_update_list_dispose (GObject *object)
 static void
 gs_update_list_init (GsUpdateList *update_list)
 {
-       update_list->sizegroup_image = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
-       update_list->sizegroup_name = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+       GsUpdateListPrivate *priv = GET_PRIV (update_list);
+       priv->sizegroup_image = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+       priv->sizegroup_name = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
 
        gtk_list_box_set_header_func (GTK_LIST_BOX (update_list),
                                      list_header_func,
@@ -197,6 +221,13 @@ gs_update_list_class_init (GsUpdateListClass *klass)
 {
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
+       signals [SIGNAL_BUTTON_CLICKED] =
+               g_signal_new ("button-clicked",
+                             G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST,
+                             G_STRUCT_OFFSET (GsUpdateListClass, button_clicked),
+                             NULL, NULL, g_cclosure_marshal_VOID__OBJECT,
+                             G_TYPE_NONE, 1, GS_TYPE_APP);
+
        object_class->dispose = gs_update_list_dispose;
 }
 
diff --git a/src/gs-update-list.h b/src/gs-update-list.h
index d5b61d1..b35c3ec 100644
--- a/src/gs-update-list.h
+++ b/src/gs-update-list.h
@@ -30,7 +30,14 @@ G_BEGIN_DECLS
 
 #define GS_TYPE_UPDATE_LIST (gs_update_list_get_type ())
 
-G_DECLARE_FINAL_TYPE (GsUpdateList, gs_update_list, GS, UPDATE_LIST, GtkListBox)
+G_DECLARE_DERIVABLE_TYPE (GsUpdateList, gs_update_list, GS, UPDATE_LIST, GtkListBox)
+
+struct _GsUpdateListClass
+{
+       GtkListBoxClass          parent_class;
+       void                    (*button_clicked)       (GsUpdateList   *update_list,
+                                                        GsApp          *app);
+};
 
 GtkWidget      *gs_update_list_new             (void);
 void            gs_update_list_add_app         (GsUpdateList   *update_list,