Add secure album support for lock screen camera.

Secure album only shows the media items added by
the camera.

bug:5955016

Change-Id: Id26abec4dfcc036cf9de682398fed25eed73d1a5

1 files changed, 96 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/data/SecureAlbum.java b/src/com/android/gallery3d/data/SecureAlbum.java
new file mode 100644
index 000000000..a8de5ddcf
--- /dev/null
+++ b/src/com/android/gallery3d/data/SecureAlbum.java
@@ -0,0 +1,96 @@
+/*
+ * 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 android.net.Uri;
+import android.provider.MediaStore.Images;
+import android.provider.MediaStore.Video;
+
+import com.android.gallery3d.app.GalleryApp;
+
+import java.util.ArrayList;
+
+// This class lists all media items added by the client.
+public class SecureAlbum extends MediaSet {
+    @SuppressWarnings("unused")
+    private static final String TAG = "SecureAlbum";
+    private ArrayList<Path> mItems = new ArrayList<Path>();
+    private DataManager mDataManager;
+    private static final Uri[] mWatchUris =
+        {Images.Media.EXTERNAL_CONTENT_URI, Video.Media.EXTERNAL_CONTENT_URI};
+    private final ChangeNotifier mNotifier;
+
+    public SecureAlbum(Path path, GalleryApp application) {
+        super(path, nextVersionNumber());
+        mDataManager = application.getDataManager();
+        mNotifier = new ChangeNotifier(this, mWatchUris, application);
+    }
+
+    public void addMediaItem(boolean isVideo, int id) {
+        if (isVideo) {
+            mItems.add(0, Path.fromString("/local/video/item/" + id));
+        } else {
+            mItems.add(0, Path.fromString("/local/image/item/" + id));
+        }
+        mNotifier.fakeChange();
+    }
+
+    @Override
+    public ArrayList<MediaItem> getMediaItem(int start, int count) {
+        if (start >= mItems.size()) {
+            return new ArrayList<MediaItem>();
+        }
+        int end = Math.min(start + count, mItems.size());
+        ArrayList<Path> subset = new ArrayList<Path>(mItems.subList(start, end));
+        final MediaItem[] buf = new MediaItem[end - start];
+        ItemConsumer consumer = new ItemConsumer() {
+            @Override
+            public void consume(int index, MediaItem item) {
+                buf[index] = item;
+            }
+        };
+        mDataManager.mapMediaItems(subset, consumer, 0);
+        ArrayList<MediaItem> result = new ArrayList<MediaItem>(end - start);
+        for (int i = 0; i < buf.length; i++) {
+            result.add(buf[i]);
+        }
+        return result;
+    }
+
+    @Override
+    public int getMediaItemCount() {
+        return mItems.size();
+    }
+
+    @Override
+    public String getName() {
+        return "secure";
+    }
+
+    @Override
+    public long reload() {
+        if (mNotifier.isDirty()) {
+            mDataVersion = nextVersionNumber();
+        }
+        return mDataVersion;
+    }
+
+    @Override
+    public boolean isLeafAlbum() {
+        return true;
+    }
+}