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      1 /*
      2  * Copyright (C) 2014 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 static android.provider.Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS;
     20 import static android.provider.Settings.Global.ZEN_MODE_NO_INTERRUPTIONS;
     21 
     22 import android.content.BroadcastReceiver;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.IntentFilter;
     26 import android.content.res.Resources;
     27 import android.graphics.PixelFormat;
     28 import android.os.Handler;
     29 import android.os.Message;
     30 import android.os.UserHandle;
     31 import android.view.Gravity;
     32 import android.view.LayoutInflater;
     33 import android.view.View;
     34 import android.view.View.OnAttachStateChangeListener;
     35 import android.view.WindowManager;
     36 import android.widget.ImageView;
     37 import android.widget.TextView;
     38 
     39 import com.android.systemui.R;
     40 
     41 public class ZenToast {
     42     private static final String ACTION_SHOW = ZenToast.class.getName() + ".SHOW";
     43     private static final String ACTION_HIDE = ZenToast.class.getName() + ".HIDE";
     44     private static final String EXTRA_ZEN = "zen";
     45     private static final String EXTRA_TEXT = "text";
     46 
     47     private static final int MSG_SHOW = 1;
     48     private static final int MSG_HIDE = 2;
     49 
     50     private final Context mContext;
     51     private final WindowManager mWindowManager;
     52 
     53     private View mZenToast;
     54 
     55     public ZenToast(Context context) {
     56         mContext = context;
     57         mWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
     58         final IntentFilter filter = new IntentFilter();
     59         filter.addAction(ACTION_SHOW);
     60         filter.addAction(ACTION_HIDE);
     61         mContext.registerReceiverAsUser(mReceiver, UserHandle.ALL, filter, null, mHandler);
     62     }
     63 
     64     public void show(int zen) {
     65         mHandler.removeMessages(MSG_HIDE);
     66         mHandler.removeMessages(MSG_SHOW);
     67         mHandler.obtainMessage(MSG_SHOW, zen, 0).sendToTarget();
     68     }
     69 
     70     public void hide() {
     71         mHandler.removeMessages(MSG_HIDE);
     72         mHandler.removeMessages(MSG_SHOW);
     73         mHandler.obtainMessage(MSG_HIDE).sendToTarget();
     74     }
     75 
     76     private void handleShow(int zen, String overrideText) {
     77         handleHide();
     78 
     79         String text;
     80         final int iconRes;
     81         switch (zen) {
     82             case ZEN_MODE_NO_INTERRUPTIONS:
     83                 text = mContext.getString(R.string.zen_no_interruptions);
     84                 iconRes = R.drawable.ic_zen_none;
     85                 break;
     86             case ZEN_MODE_IMPORTANT_INTERRUPTIONS:
     87                 text = mContext.getString(R.string.zen_important_interruptions);
     88                 iconRes = R.drawable.ic_zen_important;
     89                 break;
     90             default:
     91                 return;
     92         }
     93         if (overrideText != null) {
     94             text = overrideText;
     95         }
     96         final Resources res = mContext.getResources();
     97         final WindowManager.LayoutParams params = new WindowManager.LayoutParams();
     98         params.height = WindowManager.LayoutParams.WRAP_CONTENT;
     99         params.width = res.getDimensionPixelSize(R.dimen.zen_toast_width);
    100         params.format = PixelFormat.TRANSLUCENT;
    101         params.windowAnimations = R.style.ZenToastAnimations;
    102         params.type = WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL;
    103         params.setTitle(getClass().getSimpleName());
    104         params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
    105                 | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
    106                 | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
    107         params.gravity = Gravity.CENTER;
    108         params.packageName = mContext.getPackageName();
    109         mZenToast = LayoutInflater.from(mContext).inflate(R.layout.zen_toast, null);
    110         final TextView message = (TextView) mZenToast.findViewById(android.R.id.message);
    111         message.setText(text);
    112         final ImageView icon = (ImageView) mZenToast.findViewById(android.R.id.icon);
    113         icon.setImageResource(iconRes);
    114         mZenToast.addOnAttachStateChangeListener(new OnAttachStateChangeListener() {
    115             @Override
    116             public void onViewDetachedFromWindow(View v) {
    117                 // noop
    118             }
    119 
    120             @Override
    121             public void onViewAttachedToWindow(View v) {
    122                 mZenToast.announceForAccessibility(message.getText());
    123             }
    124         });
    125         mWindowManager.addView(mZenToast, params);
    126         final int animDuration = res.getInteger(R.integer.zen_toast_animation_duration);
    127         final int visibleDuration = res.getInteger(R.integer.zen_toast_visible_duration);
    128         mHandler.sendEmptyMessageDelayed(MSG_HIDE, animDuration + visibleDuration);
    129     }
    130 
    131     private void handleHide() {
    132         if (mZenToast != null) {
    133             mWindowManager.removeView(mZenToast);
    134             mZenToast = null;
    135         }
    136     }
    137 
    138     private final Handler mHandler = new Handler() {
    139         public void handleMessage(Message msg) {
    140             switch (msg.what) {
    141                 case MSG_SHOW:
    142                     handleShow(msg.arg1, null);
    143                     break;
    144                 case MSG_HIDE:
    145                     handleHide();
    146                     break;
    147             }
    148         }
    149     };
    150 
    151     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
    152         @Override
    153         public void onReceive(Context context, Intent intent) {
    154             if (ACTION_SHOW.equals(intent.getAction())) {
    155                 final int zen = intent.getIntExtra(EXTRA_ZEN, ZEN_MODE_IMPORTANT_INTERRUPTIONS);
    156                 final String text = intent.getStringExtra(EXTRA_TEXT);
    157                 handleShow(zen, text);
    158             } else if (ACTION_HIDE.equals(intent.getAction())) {
    159                 handleHide();
    160             }
    161         }
    162     };
    163 }
    164