[gnome-software] Add a 'More...' button on the overview page

[Richard Hughes <rhughes src gnome org>]

commit ab8b1facae7625fc03c1761278e56d60160ec95f
Author: Richard Hughes <richard hughsie com>
Date:   Tue Jul 12 16:21:50 2016 +0100

    Add a 'More...' button on the overview page
    
    Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=734782

 src/gs-shell-overview.c |   50 ++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 47 insertions(+), 3 deletions(-)
---
diff --git a/src/gs-shell-overview.c b/src/gs-shell-overview.c
index 795a7e2..6b35473 100644
--- a/src/gs-shell-overview.c
+++ b/src/gs-shell-overview.c
@@ -52,6 +52,7 @@ typedef struct
        gboolean                 empty;
        gchar                   *category_of_day;
        GtkWidget               *search_button;
+       GHashTable              *category_hash;         /* id : GsCategory */
 
        GtkWidget               *bin_featured;
        GtkWidget               *box_overview;
@@ -168,6 +169,22 @@ out:
 }
 
 static void
+gs_shell_overview_category_more_cb (GtkButton *button, GsShellOverview *self)
+{
+       GsShellOverviewPrivate *priv = gs_shell_overview_get_instance_private (self);
+       GsCategory *cat;
+       const gchar *id;
+
+       id = g_object_get_data (G_OBJECT (button), "GnomeSoftware::CategoryId");
+       if (id == NULL)
+               return;
+       cat = g_hash_table_lookup (priv->category_hash, id);
+       if (cat == NULL)
+               return;
+       gs_shell_show_category (priv->shell, cat);
+}
+
+static void
 gs_shell_overview_get_category_apps_cb (GObject *source_object,
                                        GAsyncResult *res,
                                        gpointer user_data)
@@ -178,9 +195,11 @@ gs_shell_overview_get_category_apps_cb (GObject *source_object,
        GsPluginLoader *plugin_loader = GS_PLUGIN_LOADER (source_object);
        guint i;
        GsApp *app;
-       GtkWidget *tile;
-       GtkWidget *label;
        GtkWidget *box;
+       GtkWidget *button;
+       GtkWidget *headerbox;
+       GtkWidget *label;
+       GtkWidget *tile;
        g_autoptr(GError) error = NULL;
        g_autoptr(GsAppList) list = NULL;
 
@@ -199,14 +218,31 @@ gs_shell_overview_get_category_apps_cb (GObject *source_object,
        gs_app_list_randomize (list);
 
        /* add header */
+       headerbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 9);
+       gtk_widget_set_visible (headerbox, TRUE);
+
+       /* add label */
        label = gtk_label_new (load_data->title);
        gtk_widget_set_visible (label, TRUE);
        gtk_label_set_xalign (GTK_LABEL (label), 0.f);
        gtk_widget_set_margin_top (label, 24);
        gtk_widget_set_margin_bottom (label, 6);
+       gtk_widget_set_hexpand (label, TRUE);
        gtk_style_context_add_class (gtk_widget_get_style_context (label),
                                     "index-title-alignment-software");
-       gtk_container_add (GTK_CONTAINER (priv->box_overview), label);
+       gtk_container_add (GTK_CONTAINER (headerbox), label);
+
+       /* add button */
+       button = gtk_button_new_with_label (_("More…"));
+       g_object_set_data_full (G_OBJECT (button), "GnomeSoftware::CategoryId",
+                               g_strdup (gs_category_get_id (load_data->category)),
+                               g_free);
+       gtk_widget_set_visible (button, TRUE);
+       gtk_widget_set_valign (button, GTK_ALIGN_CENTER);
+       g_signal_connect (button, "clicked",
+                         G_CALLBACK (gs_shell_overview_category_more_cb), self);
+       gtk_container_add (GTK_CONTAINER (headerbox), button);
+       gtk_container_add (GTK_CONTAINER (priv->box_overview), headerbox);
 
        /* add hiding box */
        box = gs_hiding_box_new ();
@@ -375,6 +411,11 @@ gs_shell_overview_get_categories_cb (GObject *source_object,
                gtk_flow_box_insert (flowbox, tile, -1);
                gtk_widget_set_can_focus (gtk_widget_get_parent (tile), FALSE);
                has_category = TRUE;
+
+               /* we save these for the 'More...' buttons */
+               g_hash_table_insert (priv->category_hash,
+                                    g_strdup (gs_category_get_id (cat)),
+                                    g_object_ref (cat));
        }
 
        /* show the expander if we have too many children */
@@ -605,6 +646,8 @@ gs_shell_overview_setup (GsShellOverview *self,
        priv->plugin_loader = g_object_ref (plugin_loader);
        priv->builder = g_object_ref (builder);
        priv->cancellable = g_object_ref (cancellable);
+       priv->category_hash = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                                    g_free, (GDestroyNotify) g_object_unref);
 
        /* avoid a ref cycle */
        priv->shell = shell;
@@ -653,6 +696,7 @@ gs_shell_overview_dispose (GObject *object)
        g_clear_object (&priv->plugin_loader);
        g_clear_object (&priv->cancellable);
        g_clear_pointer (&priv->category_of_day, g_free);
+       g_clear_pointer (&priv->category_hash, g_hash_table_unref);
 
        G_OBJECT_CLASS (gs_shell_overview_parent_class)->dispose (object);
 }