1 /* 2 * Copyright (C) 2019 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.nfc.cardemulation.util; 18 19 import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS; 20 21 import android.annotation.SuppressLint; 22 import android.app.Activity; 23 import android.app.AlertDialog; 24 import android.app.Dialog; 25 import android.content.DialogInterface; 26 import android.os.Bundle; 27 import android.view.ViewGroup; 28 import android.view.Window; 29 import android.view.accessibility.AccessibilityEvent; 30 import android.widget.Button; 31 32 import com.android.internal.annotations.VisibleForTesting; 33 34 /** 35 * An activity that follows the visual style of an AlertDialog. 36 * 37 * @see #mAlert 38 * @see #setupAlert() 39 * 40 * Copied from {@code packages/modules/Bluetooth/android/app/src/com/android/bluetooth/ 41 * AlertActivity.java} 42 */ 43 public abstract class AlertActivity extends Activity implements DialogInterface.OnDismissListener, 44 DialogInterface.OnCancelListener { 45 46 /** 47 * The model for the alert. 48 * 49 */ 50 protected AlertDialog.Builder mAlertBuilder; 51 private AlertDialog mAlert; 52 AlertActivity()53 public AlertActivity() {} 54 55 @Override onCreate(Bundle savedInstanceState)56 protected void onCreate(Bundle savedInstanceState) { 57 super.onCreate(savedInstanceState); 58 59 getWindow().addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS); 60 requestWindowFeature(Window.FEATURE_NO_TITLE); 61 mAlertBuilder = new AlertDialog.Builder(this); 62 mAlertBuilder.setOnDismissListener(this); 63 mAlertBuilder.setOnCancelListener(this); 64 } 65 66 @Override onDismiss(DialogInterface dialog)67 public void onDismiss(DialogInterface dialog) { 68 if (!isFinishing()) { 69 finish(); 70 } 71 } 72 73 @Override onCancel(DialogInterface dialog)74 public void onCancel(DialogInterface dialog) { 75 if (!isFinishing()) { 76 finish(); 77 } 78 } 79 80 @Override dispatchPopulateAccessibilityEvent(AccessibilityEvent event)81 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 82 return dispatchPopulateAccessibilityEvent(this, event); 83 } 84 dispatchPopulateAccessibilityEvent(Activity act, AccessibilityEvent event)85 private static boolean dispatchPopulateAccessibilityEvent(Activity act, 86 AccessibilityEvent event) { 87 event.setClassName(Dialog.class.getName()); 88 event.setPackageName(act.getPackageName()); 89 90 ViewGroup.LayoutParams params = act.getWindow().getAttributes(); 91 boolean isFullScreen = (params.width == ViewGroup.LayoutParams.MATCH_PARENT) 92 && (params.height == ViewGroup.LayoutParams.MATCH_PARENT); 93 event.setFullScreen(isFullScreen); 94 95 return false; 96 } 97 setupAlert()98 protected void setupAlert() { 99 mAlert = mAlertBuilder.create(); 100 mAlert.show(); 101 } 102 103 @Override onDestroy()104 protected void onDestroy() { 105 if (mAlert != null) { 106 mAlert.dismiss(); 107 } 108 super.onDestroy(); 109 } 110 111 } 112