[gnome-software] Show screenshots for snaps (requires snapd 2.15.2)

[Robert Ancell <rancell src gnome org>]

commit f9cc742b29cb226a24afc7cd28c023b1ec0bffae
Author: Robert Ancell <robert ancell canonical com>
Date:   Mon Oct 3 13:15:49 2016 +1300

    Show screenshots for snaps (requires snapd 2.15.2)

 src/plugins/gs-plugin-snap.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-snap.c b/src/plugins/gs-plugin-snap.c
index 78a9191..5736ff2 100644
--- a/src/plugins/gs-plugin-snap.c
+++ b/src/plugins/gs-plugin-snap.c
@@ -188,6 +188,26 @@ refine_app (GsPlugin *plugin, GsApp *app, JsonObject *package, gboolean from_sea
                gs_app_add_icon (app, icon);
        }
 
+       if (json_object_has_member (package, "screenshots") && gs_app_get_screenshots (app)->len <= 0) {
+               JsonArray *screenshots;
+               guint i;
+
+               screenshots = json_object_get_array_member (package, "screenshots");
+               for (i = 0; i < json_array_get_length (screenshots); i++) {
+                       JsonObject *screenshot = json_array_get_object_element (screenshots, i);
+                       g_autoptr(AsScreenshot) ss = NULL;
+                       g_autoptr(AsImage) image = NULL;
+
+                       ss = as_screenshot_new ();
+                       as_screenshot_set_kind (ss, AS_SCREENSHOT_KIND_NORMAL);
+                       image = as_image_new ();
+                       as_image_set_url (image, json_object_get_string_member (screenshot, "url"));
+                       as_image_set_kind (image, AS_IMAGE_KIND_SOURCE);
+                       as_screenshot_add_image (ss, image);
+                       gs_app_add_screenshot (app, ss);
+               }
+       }
+
        if (!from_search) {
                JsonArray *apps;