1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.window;
18 
19 import android.view.SurfaceControl.Transaction;
20 
21 /**
22  * Interface that is invoked when the ISurfaceSyncGroup has completed. The parent ISurfaceSyncGroup
23  * creates an ITransactionReadyCallback and sends it to the children who will invoke the
24  * {@link onTransactionReady} when they have completed, including waiting on their children.
25  *
26  * @hide
27  */
28 interface ITransactionReadyCallback {
29     /**
30      * Invoked when ISurfaceSyncGroup has completed. This means the ISurfaceSyncGroup has been
31      * marked as ready and all children it was waiting on have been completed.
32      *
33      * @param t The transaction that contains everything to be included in the sync. This can be
34                 null if there's nothing to sync
35      */
onTransactionReady(in @ullable Transaction t)36     void onTransactionReady(in @nullable Transaction t);
37 }