Svetoslav Ganov | 54d068e | 2011-03-02 12:58:40 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006-2011 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.server.am; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.database.ContentObserver; |
| 21 | import android.net.Uri; |
| 22 | import android.os.Bundle; |
| 23 | import android.provider.Settings; |
| 24 | import android.provider.Settings.SettingNotFoundException; |
| 25 | import android.util.Log; |
| 26 | |
| 27 | import java.util.HashMap; |
| 28 | import java.util.Map; |
| 29 | |
| 30 | /** |
| 31 | * Helper class for watching a set of core settings which the framework |
| 32 | * propagates to application processes to avoid multiple lookups and potentially |
| 33 | * disk I/O operations. Note: This class assumes that all core settings reside |
| 34 | * in {@link Settings.Secure}. |
| 35 | */ |
Dianne Hackborn | be4e6aa | 2013-06-07 13:25:29 -0700 | [diff] [blame^] | 36 | final class CoreSettingsObserver extends ContentObserver { |
Svetoslav Ganov | 54d068e | 2011-03-02 12:58:40 -0800 | [diff] [blame] | 37 | private static final String LOG_TAG = CoreSettingsObserver.class.getSimpleName(); |
| 38 | |
| 39 | // mapping form property name to its type |
| 40 | private static final Map<String, Class<?>> sCoreSettingToTypeMap = new HashMap< |
| 41 | String, Class<?>>(); |
| 42 | static { |
| 43 | sCoreSettingToTypeMap.put(Settings.Secure.LONG_PRESS_TIMEOUT, int.class); |
| 44 | // add other core settings here... |
| 45 | } |
| 46 | |
| 47 | private final Bundle mCoreSettings = new Bundle(); |
| 48 | |
| 49 | private final ActivityManagerService mActivityManagerService; |
| 50 | |
| 51 | public CoreSettingsObserver(ActivityManagerService activityManagerService) { |
| 52 | super(activityManagerService.mHandler); |
| 53 | mActivityManagerService = activityManagerService; |
| 54 | beginObserveCoreSettings(); |
Svetoslav Ganov | 9aa597e | 2011-03-03 18:17:41 -0800 | [diff] [blame] | 55 | sendCoreSettings(); |
Svetoslav Ganov | 54d068e | 2011-03-02 12:58:40 -0800 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | public Bundle getCoreSettingsLocked() { |
| 59 | return (Bundle) mCoreSettings.clone(); |
| 60 | } |
| 61 | |
| 62 | @Override |
| 63 | public void onChange(boolean selfChange) { |
| 64 | synchronized (mActivityManagerService) { |
Svetoslav Ganov | 9aa597e | 2011-03-03 18:17:41 -0800 | [diff] [blame] | 65 | sendCoreSettings(); |
Svetoslav Ganov | 54d068e | 2011-03-02 12:58:40 -0800 | [diff] [blame] | 66 | } |
| 67 | } |
| 68 | |
Svetoslav Ganov | 9aa597e | 2011-03-03 18:17:41 -0800 | [diff] [blame] | 69 | private void sendCoreSettings() { |
| 70 | populateCoreSettings(mCoreSettings); |
| 71 | mActivityManagerService.onCoreSettingsChange(mCoreSettings); |
| 72 | } |
| 73 | |
Svetoslav Ganov | 54d068e | 2011-03-02 12:58:40 -0800 | [diff] [blame] | 74 | private void beginObserveCoreSettings() { |
| 75 | for (String setting : sCoreSettingToTypeMap.keySet()) { |
| 76 | Uri uri = Settings.Secure.getUriFor(setting); |
| 77 | mActivityManagerService.mContext.getContentResolver().registerContentObserver( |
| 78 | uri, false, this); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | private void populateCoreSettings(Bundle snapshot) { |
| 83 | Context context = mActivityManagerService.mContext; |
| 84 | for (Map.Entry<String, Class<?>> entry : sCoreSettingToTypeMap.entrySet()) { |
| 85 | String setting = entry.getKey(); |
| 86 | Class<?> type = entry.getValue(); |
| 87 | try { |
| 88 | if (type == String.class) { |
| 89 | String value = Settings.Secure.getString(context.getContentResolver(), |
| 90 | setting); |
| 91 | snapshot.putString(setting, value); |
| 92 | } else if (type == int.class) { |
| 93 | int value = Settings.Secure.getInt(context.getContentResolver(), |
| 94 | setting); |
| 95 | snapshot.putInt(setting, value); |
| 96 | } else if (type == float.class) { |
| 97 | float value = Settings.Secure.getFloat(context.getContentResolver(), |
| 98 | setting); |
| 99 | snapshot.putFloat(setting, value); |
| 100 | } else if (type == long.class) { |
| 101 | long value = Settings.Secure.getLong(context.getContentResolver(), |
| 102 | setting); |
| 103 | snapshot.putLong(setting, value); |
| 104 | } |
| 105 | } catch (SettingNotFoundException snfe) { |
| 106 | Log.w(LOG_TAG, "Cannot find setting \"" + setting + "\"", snfe); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | } |