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 android.bluetooth; 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 @SuppressLint("AndroidFrameworkBluetoothPermission") 41 public abstract class AlertActivity extends Activity implements DialogInterface.OnDismissListener, 42 DialogInterface.OnCancelListener { 43 44 /** 45 * The model for the alert. 46 * 47 */ 48 protected AlertDialog.Builder mAlertBuilder; 49 private AlertDialog mAlert; 50 AlertActivity()51 public AlertActivity() {} 52 53 @Override onCreate(Bundle savedInstanceState)54 protected void onCreate(Bundle savedInstanceState) { 55 super.onCreate(savedInstanceState); 56 57 getWindow().addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS); 58 requestWindowFeature(Window.FEATURE_NO_TITLE); 59 mAlertBuilder = new AlertDialog.Builder(this); 60 mAlertBuilder.setOnDismissListener(this); 61 mAlertBuilder.setOnCancelListener(this); 62 } 63 64 @Override onDismiss(DialogInterface dialog)65 public void onDismiss(DialogInterface dialog) { 66 if (!isFinishing()) { 67 finish(); 68 } 69 } 70 71 @Override onCancel(DialogInterface dialog)72 public void onCancel(DialogInterface dialog) { 73 if (!isFinishing()) { 74 finish(); 75 } 76 } 77 78 @Override dispatchPopulateAccessibilityEvent(AccessibilityEvent event)79 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 80 return dispatchPopulateAccessibilityEvent(this, event); 81 } 82 dispatchPopulateAccessibilityEvent(Activity act, AccessibilityEvent event)83 private static boolean dispatchPopulateAccessibilityEvent(Activity act, 84 AccessibilityEvent event) { 85 event.setClassName(Dialog.class.getName()); 86 event.setPackageName(act.getPackageName()); 87 88 ViewGroup.LayoutParams params = act.getWindow().getAttributes(); 89 boolean isFullScreen = (params.width == ViewGroup.LayoutParams.MATCH_PARENT) 90 && (params.height == ViewGroup.LayoutParams.MATCH_PARENT); 91 event.setFullScreen(isFullScreen); 92 93 return false; 94 } 95 setupAlert()96 protected void setupAlert() { 97 mAlert = mAlertBuilder.create(); 98 mAlert.show(); 99 } 100 changeIconAttribute(int attrId)101 protected void changeIconAttribute(int attrId) { 102 if (mAlert == null) return; 103 mAlert.setIconAttribute(attrId); 104 } changeTitle(CharSequence title)105 protected void changeTitle(CharSequence title) { 106 if (mAlert == null) return; 107 mAlert.setTitle(title); 108 } 109 changeButtonVisibility(int identifier, int visibility)110 protected void changeButtonVisibility(int identifier, int visibility) { 111 if (mAlert == null) return; 112 mAlert.getButton(identifier).setVisibility(visibility); 113 } 114 changeButtonText(int identifier, CharSequence text)115 protected void changeButtonText(int identifier, CharSequence text) { 116 if (mAlert == null) return; 117 mAlert.getButton(identifier).setText(text); 118 } 119 changeButtonEnabled(int identifier, boolean enable)120 protected void changeButtonEnabled(int identifier, boolean enable) { 121 if (mAlert == null) return; 122 mAlert.getButton(identifier).setEnabled(enable); 123 } 124 125 @VisibleForTesting getButton(int identifier)126 public Button getButton(int identifier) { 127 return mAlert.getButton(identifier); 128 } 129 130 @Override onDestroy()131 protected void onDestroy() { 132 if (mAlert != null) { 133 mAlert.dismiss(); 134 } 135 super.onDestroy(); 136 } 137 138 } 139