[recipes: 4/4] Speed up changing to the recipes page

[Matthias Clasen <matthiasc src gnome org>]

commit eee6f2f2491174a8d015d9b81430515f6a1622ed
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 11 14:58:00 2017 -0500

    Speed up changing to the recipes page
    
    I realized that we only ever show readonly recipes on this page,
    so there is no need to recreate all the content when we switch
    to the page.
    
    The one exception is the shopping list tile, so recreate just that
    one.

 src/gr-recipes-page.c |   37 ++++++++++++++++++++++++++++---------
 1 files changed, 28 insertions(+), 9 deletions(-)
---
diff --git a/src/gr-recipes-page.c b/src/gr-recipes-page.c
index 0330988..476b596 100644
--- a/src/gr-recipes-page.c
+++ b/src/gr-recipes-page.c
@@ -57,6 +57,7 @@ G_DEFINE_TYPE (GrRecipesPage, gr_recipes_page, GTK_TYPE_BOX)
 
 static void populate_diets_from_store (GrRecipesPage *page);
 static void populate_recipes_from_store (GrRecipesPage *page);
+static void populate_shopping_from_store (GrRecipesPage *page);
 static void populate_chefs_from_store (GrRecipesPage *page);
 static void connect_store_signals (GrRecipesPage *page);
 
@@ -141,6 +142,7 @@ gr_recipes_page_init (GrRecipesPage *page)
 
         populate_diets_from_store (page);
         populate_recipes_from_store (page);
+        populate_shopping_from_store (page);
         populate_chefs_from_store (page);
         gr_recipe_tile_recreate_css ();
         gr_chef_tile_recreate_css ();
@@ -283,11 +285,7 @@ populate_recipes_from_store (GrRecipesPage *self)
         int i;
         int todays;
         int picks;
-        g_autofree char *shop1 = NULL;
-        g_autofree char *shop2 = NULL;
-        int shopping;
         char *tmp;
-        g_autoptr(GDateTime) now = NULL;
 
         container_remove_all (GTK_CONTAINER (self->today_box));
         container_remove_all (GTK_CONTAINER (self->pick_box));
@@ -309,7 +307,6 @@ populate_recipes_from_store (GrRecipesPage *self)
 
         todays = 0;
         picks = 0;
-        shopping = 0;
         for (i = 0; i < length; i++) {
                 g_autoptr(GrRecipe) recipe = NULL;
                 GtkWidget *tile;
@@ -334,6 +331,31 @@ populate_recipes_from_store (GrRecipesPage *self)
                         gtk_grid_attach (GTK_GRID (self->pick_box), tile, picks, 0, 1, 1);
                         picks++;
                 }
+        }
+}
+
+static void
+populate_shopping_from_store (GrRecipesPage *self)
+{
+        GrRecipeStore *store;
+        g_autofree char **keys = NULL;
+        guint length;
+        int shopping;
+        int i;
+        g_autofree char *shop1 = NULL;
+        g_autofree char *shop2 = NULL;
+        char *tmp;
+        g_autoptr(GDateTime) now = NULL;
+
+        store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
+
+        keys = gr_recipe_store_get_recipe_keys (store, &length);
+
+        shopping = 0;
+        for (i = 0; i < length; i++) {
+                g_autoptr(GrRecipe) recipe = NULL;
+
+                recipe = gr_recipe_store_get_recipe (store, keys[i]);
 
                 if (gr_recipe_store_is_in_shopping (store, recipe)) {
                         if (shopping == 0)
@@ -362,10 +384,7 @@ populate_recipes_from_store (GrRecipesPage *self)
 void
 gr_recipes_page_refresh (GrRecipesPage *self)
 {
-        populate_recipes_from_store (self);
-        populate_diets_from_store (self);
-        gr_recipe_tile_recreate_css ();
-        gr_chef_tile_recreate_css ();
+        populate_shopping_from_store (self);
 }