Bill Lin | 32ed3d6 | 2018-10-02 18:10:09 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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.systemui.power; |
| 18 | |
| 19 | import android.app.AlertDialog; |
| 20 | import android.content.BroadcastReceiver; |
| 21 | import android.content.Context; |
| 22 | import android.content.Intent; |
| 23 | |
| 24 | import android.content.IntentFilter; |
| 25 | import android.os.Bundle; |
| 26 | import android.os.UserHandle; |
| 27 | import android.view.KeyEvent; |
| 28 | import android.view.LayoutInflater; |
| 29 | import android.view.MotionEvent; |
| 30 | import android.view.View; |
| 31 | import android.view.WindowManager; |
| 32 | import android.view.accessibility.AccessibilityNodeInfo; |
| 33 | import android.widget.TextView; |
| 34 | |
| 35 | import com.android.internal.annotations.VisibleForTesting; |
| 36 | |
| 37 | import com.android.systemui.R; |
| 38 | |
| 39 | /** |
| 40 | * The alarm dialog shown when the device overheats. |
| 41 | * When the temperature exceeds a threshold, we're showing this dialog to notify the user. |
| 42 | * Once the dialog shows, a sound and vibration will be played until the user touches the dialog. |
| 43 | */ |
| 44 | public class OverheatAlarmDialog extends AlertDialog { |
| 45 | private final OverheatDialogDelegate mOverheatDialogDelegate; |
| 46 | private final View mContentView, mTitleView; |
| 47 | |
| 48 | private static boolean sHasUserInteracted; |
| 49 | |
| 50 | private OverheatAlarmDialog.PowerEventReceiver mPowerEventReceiver; |
| 51 | |
| 52 | /** |
| 53 | * OverheatAlarmDialog should appear over system panels and keyguard. |
| 54 | */ |
| 55 | public OverheatAlarmDialog(Context context) { |
| 56 | super(context, R.style.Theme_SystemUI_Dialog_Alert); |
| 57 | mOverheatDialogDelegate = new OverheatDialogDelegate(); |
| 58 | |
| 59 | // Setup custom views, the purpose of set custom title and message is inject |
| 60 | // AccessibilityDelegate to solve beep sound and talk back mix problem |
| 61 | final LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( |
| 62 | Context.LAYOUT_INFLATER_SERVICE); |
| 63 | mContentView = inflater.inflate(R.layout.overheat_dialog_content, null); |
| 64 | mTitleView = inflater.inflate(R.layout.overheat_dialog_title, null); |
| 65 | setView(mContentView); |
| 66 | setCustomTitle(mTitleView); |
| 67 | |
| 68 | setupDialog(); |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public void dismiss() { |
| 73 | sHasUserInteracted = false; |
| 74 | getContext().unregisterReceiver(mPowerEventReceiver); |
| 75 | super.dismiss(); |
| 76 | } |
| 77 | |
| 78 | private void setupDialog() { |
| 79 | getWindow().getAttributes().privateFlags |= |
| 80 | WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS; |
| 81 | getWindow().setType(WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL); |
| 82 | getWindow().addFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM |
| 83 | | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
| 84 | | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
| 85 | | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); |
| 86 | |
| 87 | // Register ACTION_SCREEN_OFF for power Key event. |
| 88 | IntentFilter filter = new IntentFilter(); |
| 89 | filter.addAction(Intent.ACTION_SCREEN_OFF); |
| 90 | mPowerEventReceiver = new OverheatAlarmDialog.PowerEventReceiver(); |
| 91 | getContext().registerReceiverAsUser(mPowerEventReceiver, UserHandle.CURRENT, filter, null, |
| 92 | null); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void setTitle(CharSequence title) { |
| 97 | if (mTitleView == null) { |
| 98 | super.setTitle(title); |
| 99 | return; |
| 100 | } |
| 101 | final TextView titleTextView = mTitleView.findViewById(R.id.alertTitle); |
| 102 | if (titleTextView != null) { |
| 103 | titleTextView.setText(title); |
| 104 | titleTextView.setAccessibilityDelegate(mOverheatDialogDelegate); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | @Override |
| 109 | public void setMessage(CharSequence message) { |
| 110 | if (mContentView == null) { |
| 111 | super.setMessage(message); |
| 112 | return; |
| 113 | } |
| 114 | final TextView messageView = mContentView.findViewById(android.R.id.message); |
| 115 | if (messageView != null) { |
| 116 | messageView.setAccessibilityDelegate(mOverheatDialogDelegate); |
| 117 | messageView.requestAccessibilityFocus(); |
| 118 | messageView.setText(message); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | @Override |
| 123 | public boolean dispatchKeyEvent(KeyEvent event) { |
| 124 | if (!sHasUserInteracted) { |
| 125 | switch (event.getKeyCode()) { |
| 126 | case KeyEvent.KEYCODE_VOLUME_UP: |
| 127 | case KeyEvent.KEYCODE_VOLUME_DOWN: |
| 128 | case KeyEvent.KEYCODE_BACK: |
| 129 | notifyAlarmBeepSoundChange(); |
| 130 | sHasUserInteracted = true; |
| 131 | break; |
| 132 | } |
| 133 | } |
| 134 | return super.dispatchKeyEvent(event); |
| 135 | } |
| 136 | |
| 137 | @Override |
| 138 | public boolean dispatchTouchEvent(MotionEvent ev) { |
| 139 | // Stop beep sound when touch alarm dialog. |
| 140 | if (!sHasUserInteracted) { |
| 141 | if (ev.getAction() == MotionEvent.ACTION_DOWN |
| 142 | || ev.getAction() == MotionEvent.ACTION_OUTSIDE) { |
| 143 | notifyAlarmBeepSoundChange(); |
| 144 | sHasUserInteracted = true; |
| 145 | } |
| 146 | } |
| 147 | return super.dispatchTouchEvent(ev); |
| 148 | } |
| 149 | |
| 150 | @VisibleForTesting |
| 151 | protected void notifyAlarmBeepSoundChange() { |
| 152 | this.getContext().sendBroadcast(new Intent(Intent.ACTION_ALARM_CHANGED).setPackage( |
| 153 | this.getContext().getPackageName()) |
| 154 | .setFlags(Intent.FLAG_RECEIVER_FOREGROUND)); |
| 155 | } |
| 156 | |
| 157 | private final class PowerEventReceiver extends BroadcastReceiver { |
| 158 | @Override |
| 159 | public void onReceive(Context context, Intent intent) { |
| 160 | if (!sHasUserInteracted) { |
| 161 | notifyAlarmBeepSoundChange(); |
| 162 | sHasUserInteracted = true; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Implement AccessibilityDelegate to stop beep sound while title or message view get |
| 169 | * accessibility focus, in case the alarm beep sound mix up talk back description. |
| 170 | */ |
| 171 | private final class OverheatDialogDelegate extends View.AccessibilityDelegate { |
| 172 | @Override |
| 173 | public boolean performAccessibilityAction(View host, int action, Bundle args) { |
| 174 | if (action == AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS && !sHasUserInteracted) { |
| 175 | notifyAlarmBeepSoundChange(); |
| 176 | sHasUserInteracted = true; |
| 177 | } |
| 178 | return super.performAccessibilityAction(host, action, args); |
| 179 | } |
| 180 | } |
| 181 | } |