[evince] ev-page-cache: Add method to check if a given page has been cached

[Joanmarie Diggs <joanied src gnome org>]

commit a898d96d18fcb88e9ec2958d2fdde4af817ee7ec
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Jun 23 08:41:00 2014 -0400

    ev-page-cache: Add method to check if a given page has been cached
    
    The Accessibility code will expose child objects (links, images, form
    fields) of the page, but can only do so after that page has been cached.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=728475

 libview/ev-page-cache.c |   14 ++++++++++++++
 libview/ev-page-cache.h |    2 ++
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/libview/ev-page-cache.c b/libview/ev-page-cache.c
index eda5579..6d2312f 100644
--- a/libview/ev-page-cache.c
+++ b/libview/ev-page-cache.c
@@ -664,3 +664,17 @@ ev_page_cache_ensure_page (EvPageCache *cache,
 
         ev_page_cache_schedule_job_if_needed (cache, page);
 }
+
+gboolean
+ev_page_cache_is_page_cached (EvPageCache   *cache,
+                             gint           page)
+{
+       EvPageCacheData *data;
+
+       g_return_val_if_fail (EV_IS_PAGE_CACHE (cache), FALSE);
+       g_return_val_if_fail (page >= 0 && page < cache->n_pages, FALSE);
+
+       data = &cache->page_list[page];
+
+       return data->done;
+}
diff --git a/libview/ev-page-cache.h b/libview/ev-page-cache.h
index 550ac28..904898c 100644
--- a/libview/ev-page-cache.h
+++ b/libview/ev-page-cache.h
@@ -76,6 +76,8 @@ gboolean           ev_page_cache_get_text_log_attrs     (EvPageCache       *cach
                                                          gulong            *n_attrs);
 void               ev_page_cache_ensure_page            (EvPageCache       *cache,
                                                          gint               page);
+gboolean           ev_page_cache_is_page_cached         (EvPageCache       *cache,
+                                                         gint               page);
 G_END_DECLS
 
 #endif /* EV_PAGE_CACHE_H */