SnapdragonGallery: optimize SlideShow start speed

When launch SlideShow in TimeLinePage, the FilterTypeSet
will load data twice. Avoid the useless data load.

Change-Id: I43203bd52d2811ef651435c49e624b8e3d8b0361
CRs-Fixed: 1050332

1 files changed, 10 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/data/FilterTypeSet.java b/src/com/android/gallery3d/data/FilterTypeSet.java
index e778ceb12..50a7c6964 100644..100755
--- a/src/com/android/gallery3d/data/FilterTypeSet.java
+++ b/src/com/android/gallery3d/data/FilterTypeSet.java
@@ -64,6 +64,10 @@ public class FilterTypeSet extends MediaSet implements ContentListener {
                 mPaths, start, count, mDataManager);
     }
 
+    public ArrayList<Path> getPaths() {
+        return mPaths;
+    }
+
     @Override
     public long reload() {
         if (mBaseSet.reload() > mDataVersion) {
@@ -88,12 +92,18 @@ public class FilterTypeSet extends MediaSet implements ContentListener {
             String filteredPath = basePath + "/{" + set.getPath().toString() + "}";
             MediaSet filteredSet = mDataManager.getMediaSet(filteredPath);
             filteredSet.reload();
+            if (filteredSet instanceof FilterTypeSet && ((FilterTypeSet)filteredSet).getPaths() != null) {
+                mPaths.addAll(((FilterTypeSet)filteredSet).getPaths());
+            }
             if (filteredSet.getMediaItemCount() > 0
                     || filteredSet.getSubMediaSetCount() > 0) {
                 mAlbums.add(filteredSet);
             }
         }
 
+        if (mPaths.size() > 0) {
+            return;
+        }
         // Items
         mPaths.clear();
         final int total = mBaseSet.getMediaItemCount();