a11y: ensure text cached when you request an EvPageAccessible

https://bugzilla.gnome.org/show_bug.cgi?id=724965

origin commit:
https://git.gnome.org/browse/evince/commit/?h=gnome-3-14&id=b5fc924

3 files changed, 22 insertions, 0 deletions

diff --git a/libview/ev-page-cache.c b/libview/ev-page-cache.c
index 827cbaf3..b5be8bac 100644
--- a/libview/ev-page-cache.c
+++ b/libview/ev-page-cache.c
@@ -654,3 +654,13 @@ ev_page_cache_get_text_log_attrs (EvPageCache   *cache,
 
         return FALSE;
 }
+
+void
+ev_page_cache_ensure_page (EvPageCache *cache,
+                           gint         page)
+{
+        g_return_if_fail (EV_IS_PAGE_CACHE (cache));
+        g_return_if_fail (page >= 0 && page < cache->n_pages);
+
+        ev_page_cache_schedule_job_if_needed (cache, page);
+}
diff --git a/libview/ev-page-cache.h b/libview/ev-page-cache.h
index a0e56af4..c0f5b82f 100644
--- a/libview/ev-page-cache.h
+++ b/libview/ev-page-cache.h
@@ -72,6 +72,8 @@ gboolean           ev_page_cache_get_text_log_attrs     (EvPageCache       *cach
                                                          gint               page,
                                                          PangoLogAttr     **log_attrs,
                                                          gulong            *n_attrs);
+void               ev_page_cache_ensure_page            (EvPageCache       *cache,
+                                                         gint               page);
 G_END_DECLS
 
 #endif /* EV_PAGE_CACHE_H */
diff --git a/libview/ev-view-accessible.c b/libview/ev-view-accessible.c
index ae55ddd4..2932c5e1 100644
--- a/libview/ev-view-accessible.c
+++ b/libview/ev-view-accessible.c
@@ -138,11 +138,21 @@ ev_view_accessible_ref_child (AtkObject *obj,
 			      gint       i)
 {
 	EvViewAccessible *self;
+	EvView *view;
 
 	g_return_val_if_fail (EV_IS_VIEW_ACCESSIBLE (obj), NULL);
 	self = EV_VIEW_ACCESSIBLE (obj);
 	g_return_val_if_fail (i >= 0 || i < ev_view_accessible_get_n_pages (self), NULL);
 
+	view = EV_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)));
+	if (view == NULL)
+		return NULL;
+
+	/* If a given page is requested, we assume that the text would
+	 * be requested soon, so we need to be sure that is cached.*/
+	if (view->page_cache)
+		ev_page_cache_ensure_page (view->page_cache, i);
+
 	return g_object_ref (g_ptr_array_index (self->priv->children, i));
 }