[recipes/async-write: 4/5] Do less work when recipes change

[Matthias Clasen <matthiasc src gnome org>]

commit a2f2bc6d038f8a743d1bb4bafca3fa8ee50c5cdd
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Feb 11 14:41:54 2017 -0500

    Do less work when recipes change
    
    We were just rebuilding all the pages, all the time, regardless
    whether they are currently shown or not. This was very noticable
    when using the serves spin on the shopping page - it took a
    long time for the page to refresh, several hundred milliseconds.
    With this change, we update in ~20.

 src/gr-cuisine-page.c  |    4 ++--
 src/gr-cuisines-page.c |   12 +++++++++---
 src/gr-cuisines-page.h |    3 ++-
 src/gr-details-page.c  |    3 +++
 src/gr-list-page.c     |   14 ++++++++++----
 src/gr-recipes-page.c  |   13 ++++++++++---
 src/gr-recipes-page.h  |    1 +
 src/gr-search-page.c   |    4 ++--
 src/gr-shopping-page.c |    7 ++++++-
 src/gr-window.c        |    2 ++
 10 files changed, 47 insertions(+), 16 deletions(-)
---
diff --git a/src/gr-cuisine-page.c b/src/gr-cuisine-page.c
index 664ce9b..d49e208 100644
--- a/src/gr-cuisine-page.c
+++ b/src/gr-cuisine-page.c
@@ -299,7 +299,8 @@ gr_cuisine_page_set_cuisine (GrCuisinePage *self,
 static void
 cuisine_page_reload (GrCuisinePage *page)
 {
-        gr_cuisine_page_set_cuisine (page, page->cuisine);
+        if (gtk_widget_is_drawable (GTK_WIDGET (page)))
+                gr_cuisine_page_set_cuisine (page, page->cuisine);
 }
 
 static void
@@ -309,7 +310,6 @@ connect_store_signals (GrCuisinePage *page)
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
         g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (cuisine_page_reload), page);
         g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (cuisine_page_reload), page);
         g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (cuisine_page_reload), page);
diff --git a/src/gr-cuisines-page.c b/src/gr-cuisines-page.c
index 7f820de..d184052 100644
--- a/src/gr-cuisines-page.c
+++ b/src/gr-cuisines-page.c
@@ -227,21 +227,27 @@ gr_cuisines_page_new (void)
         return GTK_WIDGET (page);
 }
 
-static void
-cuisines_page_reload (GrCuisinesPage *page)
+void
+gr_cuisines_page_refresh (GrCuisinesPage *page)
 {
         populate_cuisines (page);
         populate_seasonal (page);
 }
 
 static void
+cuisines_page_reload (GrCuisinesPage *page)
+{
+        if (gtk_widget_is_drawable (GTK_WIDGET (page)))
+                gr_cuisines_page_refresh (page);
+}
+
+static void
 connect_store_signals (GrCuisinesPage *page)
 {
         GrRecipeStore *store;
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
         g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (cuisines_page_reload), page);
         g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (cuisines_page_reload), page);
         g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (cuisines_page_reload), page);
diff --git a/src/gr-cuisines-page.h b/src/gr-cuisines-page.h
index 9cc72e6..7aed577 100644
--- a/src/gr-cuisines-page.h
+++ b/src/gr-cuisines-page.h
@@ -28,8 +28,9 @@ G_BEGIN_DECLS
 
 G_DECLARE_FINAL_TYPE (GrCuisinesPage, gr_cuisines_page, GR, CUISINES_PAGE, GtkBox)
 
-GtkWidget       *gr_cuisines_page_new (void);
+GtkWidget       *gr_cuisines_page_new      (void);
 
+void             gr_cuisines_page_refresh  (GrCuisinesPage *page);
 void             gr_cuisines_page_unexpand (GrCuisinesPage *page);
 
 
diff --git a/src/gr-details-page.c b/src/gr-details-page.c
index 687ed41..b39e6e3 100644
--- a/src/gr-details-page.c
+++ b/src/gr-details-page.c
@@ -718,6 +718,9 @@ details_page_reload (GrDetailsPage *page,
         if (recipe == NULL || page->recipe == NULL)
                 return;
 
+        if (!gtk_widget_is_drawable (GTK_WIDGET (page)))
+                return;
+
         name = gr_recipe_get_id (page->recipe);
         new_name = gr_recipe_get_id (recipe);
         if (g_strcmp0 (name, new_name) == 0)
diff --git a/src/gr-list-page.c b/src/gr-list-page.c
index 1332ba5..fc6fbb4 100644
--- a/src/gr-list-page.c
+++ b/src/gr-list-page.c
@@ -443,16 +443,22 @@ gr_list_page_repopulate (GrListPage *page)
 }
 
 static void
+repopulate (GrListPage *page)
+{
+        if (gtk_widget_is_drawable (GTK_WIDGET (page)))
+                gr_list_page_repopulate (page);
+}
+
+static void
 connect_store_signals (GrListPage *page)
 {
         GrRecipeStore *store;
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
-        g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (gr_list_page_repopulate), page);
-        g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (gr_list_page_repopulate), page);
-        g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (gr_list_page_repopulate), page);
+        g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (repopulate), page);
+        g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (repopulate), page);
+        g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (repopulate), page);
 }
 
 void
diff --git a/src/gr-recipes-page.c b/src/gr-recipes-page.c
index 27fca34..0330988 100644
--- a/src/gr-recipes-page.c
+++ b/src/gr-recipes-page.c
@@ -359,8 +359,8 @@ populate_recipes_from_store (GrRecipesPage *self)
         update_shopping_time (self);
 }
 
-static void
-repopulate_recipes (GrRecipesPage *self)
+void
+gr_recipes_page_refresh (GrRecipesPage *self)
 {
         populate_recipes_from_store (self);
         populate_diets_from_store (self);
@@ -368,6 +368,14 @@ repopulate_recipes (GrRecipesPage *self)
         gr_chef_tile_recreate_css ();
 }
 
+
+static void
+repopulate_recipes (GrRecipesPage *self)
+{
+        if (gtk_widget_is_drawable (GTK_WIDGET (self)))
+                gr_recipes_page_refresh (self);
+}
+
 static void
 populate_chefs_from_store (GrRecipesPage *self)
 {
@@ -421,7 +429,6 @@ connect_store_signals (GrRecipesPage *page)
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
         g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (repopulate_recipes), page);
         g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (repopulate_recipes), page);
         g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (repopulate_recipes), page);
diff --git a/src/gr-recipes-page.h b/src/gr-recipes-page.h
index 3a29b01..05ec3ba 100644
--- a/src/gr-recipes-page.h
+++ b/src/gr-recipes-page.h
@@ -30,6 +30,7 @@ G_DECLARE_FINAL_TYPE (GrRecipesPage, gr_recipes_page, GR, RECIPES_PAGE, GtkBox)
 
 GtkWidget      *gr_recipes_page_new      (void);
 
+void            gr_recipes_page_refresh  (GrRecipesPage *page);
 void            gr_recipes_page_unexpand (GrRecipesPage *page);
 
 G_END_DECLS
diff --git a/src/gr-search-page.c b/src/gr-search-page.c
index 3d1e51e..4e5f23f 100644
--- a/src/gr-search-page.c
+++ b/src/gr-search-page.c
@@ -192,7 +192,8 @@ gr_search_page_update_search (GrSearchPage  *page,
 static void
 search_page_reload (GrSearchPage *page)
 {
-        gr_search_page_update_search (page, gr_recipe_search_get_terms (page->search));
+        if (gtk_widget_is_drawable (GTK_WIDGET (page)))
+                gr_search_page_update_search (page, gr_recipe_search_get_terms (page->search));
 }
 
 static void
@@ -202,7 +203,6 @@ connect_store_signals (GrSearchPage *page)
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
         g_signal_connect_swapped (store, "recipe-added", G_CALLBACK (search_page_reload), page);
         g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (search_page_reload), page);
         g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (search_page_reload), page);
diff --git a/src/gr-shopping-page.c b/src/gr-shopping-page.c
index 2e49578..b5bd44d 100644
--- a/src/gr-shopping-page.c
+++ b/src/gr-shopping-page.c
@@ -849,6 +849,9 @@ recipe_added (GrShoppingPage *page,
         GList *children, *l;
         int serves;
 
+        if (!gtk_widget_is_drawable (GTK_WIDGET (page)))
+                return;
+
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
         serves = gr_recipe_store_get_shopping_serves (store, recipe);
@@ -883,6 +886,9 @@ recipe_changed (GrShoppingPage *page,
 {
         GrRecipeStore *store;
 
+        if (!gtk_widget_is_drawable (GTK_WIDGET (page)))
+                return;
+
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
         if (gr_recipe_store_is_in_shopping (store, recipe))
@@ -898,7 +904,6 @@ connect_store_signals (GrShoppingPage *page)
 
         store = gr_app_get_recipe_store (GR_APP (g_application_get_default ()));
 
-        /* FIXME: inefficient */
         g_signal_connect_swapped (store, "recipe-removed", G_CALLBACK (recipe_removed), page);
         g_signal_connect_swapped (store, "recipe-changed", G_CALLBACK (recipe_changed), page);
 }
diff --git a/src/gr-window.c b/src/gr-window.c
index acd774f..00438b5 100644
--- a/src/gr-window.c
+++ b/src/gr-window.c
@@ -268,10 +268,12 @@ visible_page_changed (GrWindow *window)
         }
 
         if (strcmp (visible, "recipes") == 0) {
+                gr_recipes_page_refresh (GR_RECIPES_PAGE (window->recipes_page));
                 gr_recipes_page_unexpand (GR_RECIPES_PAGE (window->recipes_page));
         }
 
         if (strcmp (visible, "cuisines") == 0) {
+                gr_cuisines_page_refresh (GR_CUISINES_PAGE (window->cuisines_page));
                 gr_cuisines_page_unexpand (GR_CUISINES_PAGE (window->cuisines_page));
         }
 }