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      1 /*
      2  * Copyright (C) 2010 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.settings;
     18 
     19 import android.app.AlertDialog;
     20 import android.app.Dialog;
     21 import android.bluetooth.BluetoothDevice;
     22 import android.content.BroadcastReceiver;
     23 import android.content.ContentResolver;
     24 import android.content.Context;
     25 import android.content.Intent;
     26 import android.content.IntentFilter;
     27 import android.os.Bundle;
     28 import android.preference.CheckBoxPreference;
     29 import android.preference.Preference;
     30 import android.preference.PreferenceActivity;
     31 import android.preference.PreferenceScreen;
     32 import android.provider.Settings;
     33 
     34 import com.android.settings.bluetooth.DockEventReceiver;
     35 
     36 public class DockSettings extends PreferenceActivity {
     37 
     38     private static final int DIALOG_NOT_DOCKED = 1;
     39     private static final String KEY_AUDIO_SETTINGS = "dock_audio";
     40     private static final String KEY_DOCK_SOUNDS = "dock_sounds";
     41     private Preference mAudioSettings;
     42     private CheckBoxPreference mDockSounds;
     43     private Intent mDockIntent;
     44 
     45     private BroadcastReceiver mReceiver = new BroadcastReceiver() {
     46         @Override
     47         public void onReceive(Context context, Intent intent) {
     48             if (intent.getAction().equals(Intent.ACTION_DOCK_EVENT)) {
     49                 handleDockChange(intent);
     50             }
     51         }
     52     };
     53 
     54     @Override
     55     protected void onCreate(Bundle savedInstanceState) {
     56         super.onCreate(savedInstanceState);
     57         ContentResolver resolver = getContentResolver();
     58         addPreferencesFromResource(R.xml.dock_settings);
     59 
     60         initDockSettings();
     61     }
     62 
     63     @Override
     64     protected void onResume() {
     65         super.onResume();
     66 
     67         IntentFilter filter = new IntentFilter(Intent.ACTION_DOCK_EVENT);
     68         registerReceiver(mReceiver, filter);
     69     }
     70 
     71     @Override
     72     protected void onPause() {
     73         super.onPause();
     74 
     75         unregisterReceiver(mReceiver);
     76     }
     77 
     78     private void initDockSettings() {
     79         ContentResolver resolver = getContentResolver();
     80 
     81         mAudioSettings = findPreference(KEY_AUDIO_SETTINGS);
     82         if (mAudioSettings != null) {
     83             mAudioSettings.setSummary(R.string.dock_audio_summary_none);
     84         }
     85 
     86         mDockSounds = (CheckBoxPreference) findPreference(KEY_DOCK_SOUNDS);
     87         mDockSounds.setPersistent(false);
     88         mDockSounds.setChecked(Settings.System.getInt(resolver,
     89                 Settings.System.DOCK_SOUNDS_ENABLED, 0) != 0);
     90     }
     91 
     92     private void handleDockChange(Intent intent) {
     93         if (mAudioSettings != null) {
     94             int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0);
     95 
     96             boolean isBluetooth = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE) != null;
     97 
     98             if (!isBluetooth) {
     99                 // No dock audio if not on Bluetooth.
    100                 mAudioSettings.setEnabled(false);
    101                 mAudioSettings.setSummary(R.string.dock_audio_summary_unknown);
    102             } else {
    103                 mAudioSettings.setEnabled(true);
    104 
    105                 mDockIntent = intent;
    106                 int resId = R.string.dock_audio_summary_unknown;
    107                 switch (dockState) {
    108                 case Intent.EXTRA_DOCK_STATE_CAR:
    109                     resId = R.string.dock_audio_summary_car;
    110                     break;
    111                 case Intent.EXTRA_DOCK_STATE_DESK:
    112                     resId = R.string.dock_audio_summary_desk;
    113                     break;
    114                 case Intent.EXTRA_DOCK_STATE_UNDOCKED:
    115                     resId = R.string.dock_audio_summary_none;
    116                 }
    117                 mAudioSettings.setSummary(resId);
    118             }
    119 
    120             if (dockState != Intent.EXTRA_DOCK_STATE_UNDOCKED) {
    121                 // remove undocked dialog if currently showing.
    122                 try {
    123                     dismissDialog(DIALOG_NOT_DOCKED);
    124                 } catch (IllegalArgumentException iae) {
    125                     // Maybe it was already dismissed
    126                 }
    127             }
    128         }
    129     }
    130 
    131     @Override
    132     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
    133         if (preference == mAudioSettings) {
    134             int dockState = mDockIntent != null
    135                     ? mDockIntent.getIntExtra(Intent.EXTRA_DOCK_STATE, 0)
    136                     : Intent.EXTRA_DOCK_STATE_UNDOCKED;
    137             if (dockState == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
    138                 showDialog(DIALOG_NOT_DOCKED);
    139             } else {
    140                 Intent i = new Intent(mDockIntent);
    141                 i.setAction(DockEventReceiver.ACTION_DOCK_SHOW_UI);
    142                 i.setClass(this, DockEventReceiver.class);
    143                 sendBroadcast(i);
    144             }
    145         } else if (preference == mDockSounds) {
    146             Settings.System.putInt(getContentResolver(), Settings.System.DOCK_SOUNDS_ENABLED,
    147                     mDockSounds.isChecked() ? 1 : 0);
    148         }
    149 
    150         return true;
    151     }
    152 
    153     @Override
    154     public Dialog onCreateDialog(int id) {
    155         if (id == DIALOG_NOT_DOCKED) {
    156             return createUndockedMessage();
    157         }
    158         return null;
    159     }
    160 
    161     private Dialog createUndockedMessage() {
    162         final AlertDialog.Builder ab = new AlertDialog.Builder(this);
    163         ab.setTitle(R.string.dock_not_found_title);
    164         ab.setMessage(R.string.dock_not_found_text);
    165         ab.setPositiveButton(android.R.string.ok, null);
    166         return ab.create();
    167     }
    168 }
    169