1 files changed, 82 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/FilterEmptyPromptSet.java b/src/com/android/gallery3d/data/FilterEmptyPromptSet.java
new file mode 100644
index 000000000..b576e06d4
--- /dev/null
+++ b/src/com/android/gallery3d/data/FilterEmptyPromptSet.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.data;
+
+import java.util.ArrayList;
+
+public class FilterEmptyPromptSet extends MediaSet implements ContentListener {
+    @SuppressWarnings("unused")
+    private static final String TAG = "FilterEmptyPromptSet";
+
+    private ArrayList<MediaItem> mEmptyItem;
+    private MediaSet mBaseSet;
+
+    public FilterEmptyPromptSet(Path path, MediaSet baseSet, MediaItem emptyItem) {
+        super(path, INVALID_DATA_VERSION);
+        mEmptyItem = new ArrayList<MediaItem>(1);
+        mEmptyItem.add(emptyItem);
+        mBaseSet = baseSet;
+        mBaseSet.addContentListener(this);
+    }
+
+    @Override
+    public int getMediaItemCount() {
+        int itemCount = mBaseSet.getMediaItemCount();
+        if (itemCount > 0) {
+            return itemCount;
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public ArrayList<MediaItem> getMediaItem(int start, int count) {
+        int itemCount = mBaseSet.getMediaItemCount();
+        if (itemCount > 0) {
+            return mBaseSet.getMediaItem(start, count);
+        } else if (start == 0 && count == 1) {
+            return mEmptyItem;
+        } else {
+            throw new ArrayIndexOutOfBoundsException();
+        }
+    }
+
+    @Override
+    public void onContentDirty() {
+        notifyContentChanged();
+    }
+
+    @Override
+    public boolean isLeafAlbum() {
+        return true;
+    }
+
+    @Override
+    public boolean isCameraRoll() {
+        return mBaseSet.isCameraRoll();
+    }
+
+    @Override
+    public long reload() {
+        return mBaseSet.reload();
+    }
+
+    @Override
+    public String getName() {
+        return mBaseSet.getName();
+    }
+}