[recipes/recipe-link: 7/8] Track recipe for details page in back stack

[Matthias Clasen <matthiasc src gnome org>]

commit a3e886a7caff1779bd9166fbe99762d4f1e4ba56
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Dec 29 11:13:09 2016 -0500

    Track recipe for details page in back stack
    
    We need this now, since with cross-references, we can now go
    from details page to details page.

 src/gr-window.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-window.c b/src/gr-window.c
index 06cd780..a225f9f 100644
--- a/src/gr-window.c
+++ b/src/gr-window.c
@@ -73,6 +73,7 @@ typedef struct
         gchar *header_end_child;
         gchar *header_title;
         gchar *search;
+        GrRecipe *recipe;
 } BackEntry;
 
 static void
@@ -84,6 +85,7 @@ back_entry_free (BackEntry *entry)
         g_free (entry->header_end_child);
         g_free (entry->header_title);
         g_free (entry->search);
+        g_clear_object (&entry->recipe);
         g_free (entry);
 }
 
@@ -104,6 +106,11 @@ save_back_entry (GrWindow *window)
         else
                 entry->search = NULL;
 
+        if (strcmp (entry->page, "details") == 0)
+                entry->recipe = g_object_ref (gr_details_page_get_recipe (GR_DETAILS_PAGE 
(window->details_page)));
+        else
+                entry->recipe = NULL;
+
         g_queue_push_head (window->back_entry_stack, entry);
 }
 
@@ -132,6 +139,10 @@ go_back (GrWindow *window)
                 gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (window->search_bar), FALSE);
         }
 
+        if (strcmp (entry->page, "details") == 0) {
+                gr_details_page_set_recipe (GR_DETAILS_PAGE (window->details_page), entry->recipe);
+        }
+
         back_entry_free (entry);
 }