| /* |
| * Copyright (C) 2017 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.systemui.shared.recents.view; |
| |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.view.AppTransitionAnimationSpec; |
| import android.view.IAppTransitionAnimationSpecsFuture; |
| |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.FutureTask; |
| |
| /** |
| * To be implemented by a particular animation to asynchronously provide the animation specs for a |
| * particular transition. |
| */ |
| public abstract class AppTransitionAnimationSpecsFuture { |
| |
| private final Handler mHandler; |
| private FutureTask<List<AppTransitionAnimationSpecCompat>> mComposeTask = new FutureTask<>( |
| new Callable<List<AppTransitionAnimationSpecCompat>>() { |
| @Override |
| public List<AppTransitionAnimationSpecCompat> call() throws Exception { |
| return composeSpecs(); |
| } |
| }); |
| |
| private final IAppTransitionAnimationSpecsFuture mFuture = |
| new IAppTransitionAnimationSpecsFuture.Stub() { |
| @Override |
| public AppTransitionAnimationSpec[] get() throws RemoteException { |
| try { |
| if (!mComposeTask.isDone()) { |
| mHandler.post(mComposeTask); |
| } |
| List<AppTransitionAnimationSpecCompat> specs = mComposeTask.get(); |
| // Clear reference to the compose task this future holds onto the reference to it's |
| // implementation (which can leak references to the bitmap it creates for the |
| // transition) |
| mComposeTask = null; |
| if (specs == null) { |
| return null; |
| } |
| |
| AppTransitionAnimationSpec[] arr = new AppTransitionAnimationSpec[specs.size()]; |
| for (int i = 0; i < specs.size(); i++) { |
| arr[i] = specs.get(i).toAppTransitionAnimationSpec(); |
| } |
| return arr; |
| } catch (Exception e) { |
| return null; |
| } |
| } |
| }; |
| |
| public AppTransitionAnimationSpecsFuture(Handler handler) { |
| mHandler = handler; |
| } |
| |
| /** |
| * Returns the future to handle the call from window manager. |
| */ |
| public final IAppTransitionAnimationSpecsFuture getFuture() { |
| return mFuture; |
| } |
| |
| /** |
| * Called ahead of the future callback to compose the specs to be returned in the future. |
| */ |
| public final void composeSpecsSynchronous() { |
| if (Looper.myLooper() != mHandler.getLooper()) { |
| throw new RuntimeException("composeSpecsSynchronous() called from wrong looper"); |
| } |
| mComposeTask.run(); |
| } |
| |
| public abstract List<AppTransitionAnimationSpecCompat> composeSpecs(); |
| } |