Home | History | Annotate | Download | only in volume 
      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 
     17 package com.android.systemui.volume;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.DialogInterface;
     22 import android.content.Intent;
     23 import android.content.IntentFilter;
     24 import android.content.res.Resources.NotFoundException;
     25 import android.media.AudioManager;
     26 import android.util.Log;
     27 import android.view.KeyEvent;
     28 import android.view.WindowManager;
     29 
     30 import com.android.systemui.statusbar.phone.SystemUIDialog;
     31 
     32 abstract public class SafetyWarningDialog extends SystemUIDialog
     33         implements DialogInterface.OnDismissListener, DialogInterface.OnClickListener {
     34 
     35     private static final String TAG = Util.logTag(SafetyWarningDialog.class);
     36 
     37     private static final int KEY_CONFIRM_ALLOWED_AFTER = 1000; // milliseconds
     38 
     39     private final Context mContext;
     40     private final AudioManager mAudioManager;
     41 
     42     private long mShowTime;
     43     private boolean mNewVolumeUp;
     44     private boolean mDisableOnVolumeUp;
     45 
     46     public SafetyWarningDialog(Context context, AudioManager audioManager) {
     47         super(context);
     48         mContext = context;
     49         mAudioManager = audioManager;
     50         try {
     51             mDisableOnVolumeUp = mContext.getResources().getBoolean(
     52                   com.android.internal.R.bool.config_safe_media_disable_on_volume_up);
     53         } catch (NotFoundException e) {
     54             mDisableOnVolumeUp = true;
     55         }
     56         getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR);
     57         setShowForAllUsers(true);
     58         setMessage(mContext.getString(com.android.internal.R.string.safe_media_volume_warning));
     59         setButton(DialogInterface.BUTTON_POSITIVE,
     60                 mContext.getString(com.android.internal.R.string.yes), this);
     61         setButton(DialogInterface.BUTTON_NEGATIVE,
     62                 mContext.getString(com.android.internal.R.string.no), (OnClickListener) null);
     63         setOnDismissListener(this);
     64 
     65         final IntentFilter filter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
     66         context.registerReceiver(mReceiver, filter);
     67     }
     68 
     69     abstract protected void cleanUp();
     70 
     71     @Override
     72     public boolean onKeyDown(int keyCode, KeyEvent event) {
     73         if (mDisableOnVolumeUp && keyCode == KeyEvent.KEYCODE_VOLUME_UP
     74             && event.getRepeatCount() == 0) {
     75             mNewVolumeUp = true;
     76         }
     77         return super.onKeyDown(keyCode, event);
     78     }
     79 
     80     @Override
     81     public boolean onKeyUp(int keyCode, KeyEvent event) {
     82         if (keyCode == KeyEvent.KEYCODE_VOLUME_UP && mNewVolumeUp
     83                 && (System.currentTimeMillis() - mShowTime) > KEY_CONFIRM_ALLOWED_AFTER) {
     84             if (D.BUG) Log.d(TAG, "Confirmed warning via VOLUME_UP");
     85             mAudioManager.disableSafeMediaVolume();
     86             dismiss();
     87         }
     88         return super.onKeyUp(keyCode, event);
     89     }
     90 
     91     @Override
     92     public void onClick(DialogInterface dialog, int which) {
     93         mAudioManager.disableSafeMediaVolume();
     94     }
     95 
     96     @Override
     97     protected void onStart() {
     98         super.onStart();
     99         mShowTime = System.currentTimeMillis();
    100     }
    101 
    102     @Override
    103     public void onDismiss(DialogInterface unused) {
    104         mContext.unregisterReceiver(mReceiver);
    105         cleanUp();
    106     }
    107 
    108     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    109         @Override
    110         public void onReceive(Context context, Intent intent) {
    111             if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(intent.getAction())) {
    112                 if (D.BUG) Log.d(TAG, "Received ACTION_CLOSE_SYSTEM_DIALOGS");
    113                 cancel();
    114                 cleanUp();
    115             }
    116         }
    117     };
    118 }
    119