1 /* 2 * Copyright (C) 2015 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 package com.android.settings.applications; 17 18 import android.Manifest; 19 import android.app.AppOpsManager; 20 import android.content.Context; 21 22 import com.android.settingslib.applications.ApplicationsState; 23 import com.android.settingslib.applications.ApplicationsState.AppEntry; 24 import com.android.settingslib.applications.ApplicationsState.AppFilter; 25 26 import java.util.ArrayList; 27 import java.util.List; 28 29 /* 30 * Connects info of apps that draw overlay to the ApplicationsState. Wraps around the generic 31 * AppStateAppOpsBridge class to tailor to the semantics of SYSTEM_ALERT_WINDOW. Also provides app 32 * filters that can use the info. 33 */ 34 public class AppStateOverlayBridge extends AppStateAppOpsBridge { 35 36 private static final String TAG = "AppStateOverlayBridge"; 37 private static final int APP_OPS_OP_CODE = AppOpsManager.OP_SYSTEM_ALERT_WINDOW; 38 private static final String PM_SYSTEM_ALERT_WINDOW = Manifest.permission.SYSTEM_ALERT_WINDOW; 39 private static final String[] PM_PERMISSION = { 40 PM_SYSTEM_ALERT_WINDOW 41 }; 42 AppStateOverlayBridge(Context context, ApplicationsState appState, Callback callback)43 public AppStateOverlayBridge(Context context, ApplicationsState appState, Callback callback) { 44 super(context, appState, callback, APP_OPS_OP_CODE, PM_PERMISSION); 45 } 46 47 @Override updateExtraInfo(AppEntry app, String pkg, int uid)48 protected void updateExtraInfo(AppEntry app, String pkg, int uid) { 49 app.extraInfo = getOverlayInfo(pkg, uid); 50 } 51 getOverlayInfo(String pkg, int uid)52 public OverlayState getOverlayInfo(String pkg, int uid) { 53 PermissionState permissionState = super.getPermissionInfo(pkg, uid); 54 return new OverlayState(permissionState); 55 } 56 57 // TODO: figure out how to filter out system apps for this method getNumberOfPackagesWithPermission()58 public int getNumberOfPackagesWithPermission() { 59 return super.getNumPackagesDeclaredPermission(); 60 } 61 62 // TODO: figure out how to filter out system apps for this method getNumberOfPackagesCanDrawOverlay()63 public int getNumberOfPackagesCanDrawOverlay() { 64 return super.getNumPackagesAllowedByAppOps(); 65 } 66 67 public static class OverlayState extends AppStateAppOpsBridge.PermissionState { 68 public final boolean controlEnabled; 69 70 private static final List<String> DISABLE_PACKAGE_LIST = new ArrayList<>(); 71 72 static { 73 DISABLE_PACKAGE_LIST.add("com.android.systemui"); 74 } 75 OverlayState(PermissionState permissionState)76 public OverlayState(PermissionState permissionState) { 77 super(permissionState.packageName, permissionState.userHandle); 78 this.packageInfo = permissionState.packageInfo; 79 this.appOpMode = permissionState.appOpMode; 80 this.permissionDeclared = permissionState.permissionDeclared; 81 this.staticPermissionGranted = permissionState.staticPermissionGranted; 82 controlEnabled = !DISABLE_PACKAGE_LIST.contains(permissionState.packageName); 83 } 84 } 85 86 public static final AppFilter FILTER_SYSTEM_ALERT_WINDOW = new AppFilter() { 87 @Override 88 public void init() { 89 } 90 91 @Override 92 public boolean filterApp(AppEntry info) { 93 return info.extraInfo != null; 94 } 95 }; 96 } 97