New loading model

 Rename reload() to loadIfDirty()
 loadIfDirty is implemented by MediaSet and is final
 loadIfDirty is now blocking instead of async
 Subclasses must implement two protected methods, isDirtyLocked() and load()

 The change from async reload() to sync loadIfDirty() should be fine since
 all users of reload() were doing so from a background thread already, and the
 longest load() is PicasaAlbumSet which is still a fairly brisk 40ms or so

Change-Id: If5cc596a1c13e52e5f4efff1a144bd086d37cfb7

1 files changed, 6 insertions, 2 deletions

diff --git a/src_pd/com/android/gallery3d/picasasource/PicasaSource.java b/src_pd/com/android/gallery3d/picasasource/PicasaSource.java
index 041829169..702b3b5db 100644
--- a/src_pd/com/android/gallery3d/picasasource/PicasaSource.java
+++ b/src_pd/com/android/gallery3d/picasasource/PicasaSource.java
@@ -67,8 +67,12 @@ public class PicasaSource extends MediaSource {
         }
 
         @Override
-        public long reload() {
-            return mDataVersion;
+        protected boolean isDirtyLocked() {
+            return false;
+        }
+
+        @Override
+        protected void load() {
         }
     }