Fixed behavior for back key when viewing download.

Bug: 7205463
Bug: 7164238
Bug: 7175040

When viewing an image via the download notification from browser,
changed the default behavior of the back key to take the user to
the downloads folder.

Change-Id: Ia842bfa0f23c3b0ba767e3f0447add2c9b2cc6a7

1 files changed, 32 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/data/UriSource.java b/src/com/android/gallery3d/data/UriSource.java
index f66bacd7b..624747166 100644
--- a/src/com/android/gallery3d/data/UriSource.java
+++ b/src/com/android/gallery3d/data/UriSource.java
@@ -21,6 +21,7 @@ import android.net.Uri;
 import android.webkit.MimeTypeMap;
 
 import com.android.gallery3d.app.GalleryApp;
+import com.android.gallery3d.util.MediaSetUtils;
 
 import java.io.UnsupportedEncodingException;
 import java.net.URLDecoder;
@@ -35,6 +36,22 @@ class UriSource extends MediaSource {
 
     private GalleryApp mApplication;
 
+    //Array of accepted Uri paths
+    private static final String[] ALLOWED_URIS = {
+        "content://downloads/all_downloads/"
+    };
+
+    private static boolean checkIfUriStringAllowed(String uri){
+        boolean ret = false;
+        for(String u : ALLOWED_URIS) {
+                if (uri.startsWith(u)){
+                    ret = true;
+                    break;
+                }
+        }
+        return ret;
+    }
+
     public UriSource(GalleryApp context) {
         super("uri");
         mApplication = context;
@@ -71,6 +88,21 @@ class UriSource extends MediaSource {
     }
 
     @Override
+    public Path getDefaultSetOf(Path item) {
+        MediaObject object = mApplication.getDataManager().getMediaObject(item);
+        if (object instanceof UriImage) {
+            //Check if Uri path is for an item that should appear
+            //in the downloads folder (checks against ALLOWED_URIS).
+            String uri = ((UriImage)object).getContentUri().toString();
+            if(!checkIfUriStringAllowed(uri))
+                return null;
+            return Path.fromString("/local/all").getChild(
+                    MediaSetUtils.DOWNLOAD_BUCKET_ID);
+        }
+        return null;
+    }
+
+    @Override
     public Path findPathByUri(Uri uri, String type) {
         String mimeType = getMimeType(uri);