1 /* 2 * Copyright (C) 2020 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 com.android.server.wm; 18 19 import android.os.IBinder; 20 21 import java.util.Collection; 22 23 /** 24 * Callback to decide activity starts and related operations based on originating tokens. 25 */ 26 public interface BackgroundActivityStartCallback { 27 BackgroundActivityStartCallbackResult RESULT_FALSE = 28 new BackgroundActivityStartCallbackResult(false, null); 29 BackgroundActivityStartCallbackResult RESULT_TRUE = 30 new BackgroundActivityStartCallbackResult(true, null); 31 BackgroundActivityStartCallbackResult( boolean allowed, IBinder token )32 record BackgroundActivityStartCallbackResult( 33 boolean allowed, 34 IBinder token 35 ) {} 36 37 /** 38 * Returns true if the background activity start originating from {@code tokens} should be 39 * allowed or not. 40 * 41 * Note that if the start was allowed due to a mechanism other than tokens (eg. permission), 42 * this won't be called. 43 * 44 * This will be called holding the WM and local lock, don't do anything costly or invoke AM/WM 45 * methods here directly. 46 */ isActivityStartAllowed(Collection<IBinder> tokens, int uid, String packageName)47 BackgroundActivityStartCallbackResult isActivityStartAllowed(Collection<IBinder> tokens, 48 int uid, String packageName); 49 50 /** 51 * Returns whether {@code uid} can send {@link android.content.Intent 52 * #ACTION_CLOSE_SYSTEM_DIALOGS}, presumably to start activities, based on the originating 53 * tokens {@code tokens} currently associated with potential activity starts. 54 * 55 * This will be called holding the AM and local lock, don't do anything costly or invoke AM/WM 56 * methods here directly. 57 */ canCloseSystemDialogs(Collection<IBinder> tokens, int uid)58 boolean canCloseSystemDialogs(Collection<IBinder> tokens, int uid); 59 } 60