[gnome-software] Do not show subcategories in the categories screen with a small number of apps

[Richard Hughes <rhughes src gnome org>]

commit 5534bdfd036af7ab83799d52ef9fd430bc1e978c
Author: Richard Hughes <richard hughsie com>
Date:   Mon Sep 16 10:47:22 2013 +0100

    Do not show subcategories in the categories screen with a small number of apps
    
    The number chosen here is 4, but that's personal preference.
    Apps not shown are available in the 'General' subcategory.

 src/gs-shell-category.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-shell-category.c b/src/gs-shell-category.c
index 077191c..c4345ec 100644
--- a/src/gs-shell-category.c
+++ b/src/gs-shell-category.c
@@ -29,6 +29,10 @@
 #include "gs-app-tile.h"
 #include "gs-shell-category.h"
 
+/* This is the smallest number of applications that will be shown in a
+ * subcategory. Any smaller than this and the subcategory will be hidden. */
+#define MIN_APPLICATIONS_IN_SUBCATEGORY        4
+
 struct GsShellCategoryPrivate {
        GsPluginLoader  *plugin_loader;
        GtkBuilder      *builder;
@@ -208,6 +212,8 @@ gs_shell_category_create_filter_list (GsShellCategory *shell, GsCategory *catego
 
        for  (l = list; l; l = l->next) {
                s = l->data;
+               if (gs_category_get_size (s) < MIN_APPLICATIONS_IN_SUBCATEGORY)
+                       continue;
                row = gtk_label_new (gs_category_get_name (s));
                g_object_set_data_full (G_OBJECT (row), "category", g_object_ref (s), g_object_unref);
                g_object_set (row, "xalign", 0.0, "margin", 6, NULL);