Remove panorama checks from supported operations.

 Bug 7351383
 Bug 7349438
 Move panorama support checks from getSupportedOperations so
 that calls to getSupportedOperations are consistent. Panorama
 checks are moved to only based on callbacks.

Change-Id: Id9ff138204df84c6fb0a4c971dcea59f1220aee2

1 files changed, 89 insertions, 0 deletions

diff --git a/src/com/android/gallery3d/app/PanoramaMetadataSupport.java b/src/com/android/gallery3d/app/PanoramaMetadataSupport.java
new file mode 100644
index 000000000..d40422582
--- /dev/null
+++ b/src/com/android/gallery3d/app/PanoramaMetadataSupport.java
@@ -0,0 +1,89 @@
+/*
+ * 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.app;
+
+import com.android.gallery3d.data.MediaObject;
+import com.android.gallery3d.data.MediaObject.PanoramaSupportCallback;
+import com.android.gallery3d.data.PanoramaMetadataJob;
+import com.android.gallery3d.util.Future;
+import com.android.gallery3d.util.FutureListener;
+import com.android.gallery3d.util.LightCycleHelper.PanoramaMetadata;
+
+import java.util.ArrayList;
+
+/**
+ * This class breaks out the off-thread panorama support checks so that the
+ * complexity can be shared between UriImage and LocalImage, which need to
+ * support panoramas.
+ */
+public class PanoramaMetadataSupport implements FutureListener<PanoramaMetadata> {
+    private Object mLock = new Object();
+    private Future<PanoramaMetadata> mGetPanoMetadataTask;
+    private PanoramaMetadata mPanoramaMetadata;
+    private ArrayList<PanoramaSupportCallback> mCallbacksWaiting;
+    private MediaObject mMediaObject;
+
+    public PanoramaMetadataSupport(MediaObject mediaObject) {
+        mMediaObject = mediaObject;
+    }
+
+    public void getPanoramaSupport(GalleryApp app, PanoramaSupportCallback callback) {
+        synchronized (mLock) {
+            if (mPanoramaMetadata != null) {
+                callback.panoramaInfoAvailable(mMediaObject, mPanoramaMetadata.mUsePanoramaViewer,
+                        mPanoramaMetadata.mIsPanorama360);
+            } else {
+                if (mCallbacksWaiting == null) {
+                    mCallbacksWaiting = new ArrayList<PanoramaSupportCallback>();
+                    mGetPanoMetadataTask = app.getThreadPool().submit(
+                            new PanoramaMetadataJob(app.getAndroidContext(),
+                                    mMediaObject.getContentUri()), this);
+
+                }
+                mCallbacksWaiting.add(callback);
+            }
+        }
+    }
+
+    public void clearCachedValues() {
+        synchronized (mLock) {
+            if (mPanoramaMetadata != null) {
+                mPanoramaMetadata = null;
+            } else if (mGetPanoMetadataTask != null) {
+                mGetPanoMetadataTask.cancel();
+                for (PanoramaSupportCallback cb : mCallbacksWaiting) {
+                    cb.panoramaInfoAvailable(mMediaObject, false, false);
+                }
+                mGetPanoMetadataTask = null;
+                mCallbacksWaiting = null;
+            }
+        }
+    }
+
+    @Override
+    public void onFutureDone(Future<PanoramaMetadata> future) {
+        synchronized (mLock) {
+            mPanoramaMetadata = future.get();
+            for (PanoramaSupportCallback cb : mCallbacksWaiting) {
+                cb.panoramaInfoAvailable(mMediaObject,
+                        mPanoramaMetadata.mUsePanoramaViewer,
+                        mPanoramaMetadata.mIsPanorama360);
+            }
+            mGetPanoMetadataTask = null;
+            mCallbacksWaiting = null;
+        }
+   }
+}