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Commit 18754ae4 authored by Vadim Caen's avatar Vadim Caen
Browse files

Flag and skeleton for the back predictability 

Test: N/A
Bug: 131727607
Change-Id: I3d554414bccec8b18036974e6701605e0b5603df
parent 50936e9b

core/java/android/app/IActivityTaskManager.aidl

+6 −0
Original line number Diff line number Diff line
@@ -68,6 +68,7 @@ import android.os.StrictMode; 
import android.os.WorkSource;

import android.service.voice.IVoiceInteractionSession;

import android.view.IRecentsAnimationRunner;

import android.view.IRemoteAnimationRunner;

import android.view.RemoteAnimationDefinition;

import android.view.RemoteAnimationAdapter;

import android.window.IWindowOrganizerController;
@@ -344,4 +345,9 @@ interface IActivityTaskManager { 
     * @param caller is the IApplicationThread representing the calling process.

     */

    void setRunningRemoteTransitionDelegate(in IApplicationThread caller);



    /**

     * Prepare the back preview in the server

     */

    void startBackPreview(IRemoteAnimationRunner runner);

}

libs/WindowManager/Shell/src/com/android/wm/shell/back/BackPreviewHandler.java

0 → 100644
+41 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2021 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.wm.shell.back;



import android.os.SystemProperties;

import android.view.IWindowManager;



import javax.inject.Inject;



/**

 * Handle the preview of what a back gesture will lead to.

 */

public class BackPreviewHandler {



    private static final String BACK_PREDICTABILITY_PROP = "persist.debug.back_predictability";



    public static boolean isEnabled() {

        return SystemProperties.getInt(BACK_PREDICTABILITY_PROP, 0) > 0;

    }



    private final IWindowManager mWmService;



    @Inject

    public BackPreviewHandler(IWindowManager windowManagerService) {

        mWmService = windowManagerService;

    }

}

services/core/java/com/android/server/wm/ActivityTaskManagerService.java

+15 −0
Original line number Diff line number Diff line
@@ -221,6 +221,7 @@ import android.util.SparseArray; 
import android.util.TimeUtils;

import android.util.proto.ProtoOutputStream;

import android.view.IRecentsAnimationRunner;

import android.view.IRemoteAnimationRunner;

import android.view.RemoteAnimationAdapter;

import android.view.RemoteAnimationDefinition;

import android.view.WindowManager;
@@ -455,6 +456,10 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub { 
    VrController mVrController;

    KeyguardController mKeyguardController;

    private final ClientLifecycleManager mLifecycleManager;



    @Nullable

    private final BackGestureController mBackGestureController;



    private TaskChangeNotificationController mTaskChangeNotificationController;

    /** The controller for all operations related to locktask. */

    private LockTaskController mLockTaskController;
@@ -814,6 +819,8 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub { 
        mSystemThread = ActivityThread.currentActivityThread();

        mUiContext = mSystemThread.getSystemUiContext();

        mLifecycleManager = new ClientLifecycleManager();

        mBackGestureController = BackGestureController.isEnabled() ? new BackGestureController()

                : null;

        mVisibleActivityProcessTracker = new VisibleActivityProcessTracker(this);

        mInternal = new LocalService();

        GL_ES_VERSION = SystemProperties.getInt("ro.opengles.version", GL_ES_VERSION_UNDEFINED);
@@ -1747,6 +1754,14 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub { 
        }

    }



    @Override

    public void startBackPreview(IRemoteAnimationRunner runner) {

        if (mBackGestureController == null) {

            return;

        }

        mBackGestureController.startBackPreview();

    }



    /**

     * Public API to check if the client is allowed to start an activity on specified display.

     *

services/core/java/com/android/server/wm/BackGestureController.java

0 → 100644
+37 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2021 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.server.wm;



import android.os.SystemProperties;



/**

 * Controller to handle actions related to the back gesture on the server side.

 */

public class BackGestureController {



    private static final String BACK_PREDICTABILITY_PROP = "persist.debug.back_predictability";



    public static boolean isEnabled() {

        return SystemProperties.getInt(BACK_PREDICTABILITY_PROP, 0) > 0;

    }



    /**

     * Start a remote animation the back gesture.

     */

    public void startBackPreview() {

    }

}