1 /* 2 * Copyright (C) 2016 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.internal.telephony.dataconnection; 18 19 20 import android.os.Handler; 21 import android.os.RegistrantList; 22 import android.util.Pair; 23 24 /** 25 * The class to hold different data enabled/disabled settings. Also it allows clients to register 26 * for overall data enabled setting changed event. 27 * @hide 28 */ 29 public class DataEnabledSettings { 30 31 public static final int REASON_REGISTERED = 0; 32 33 public static final int REASON_INTERNAL_DATA_ENABLED = 1; 34 35 public static final int REASON_USER_DATA_ENABLED = 2; 36 37 public static final int REASON_POLICY_DATA_ENABLED = 3; 38 39 public static final int REASON_DATA_ENABLED_BY_CARRIER = 4; 40 41 /** 42 * responds to the setInternalDataEnabled call - used internally to turn off data. 43 * For example during emergency calls 44 */ 45 private boolean mInternalDataEnabled = true; 46 47 /** 48 * responds to public (user) API to enable/disable data use independent of 49 * mInternalDataEnabled and requests for APN access persisted 50 */ 51 private boolean mUserDataEnabled = true; 52 53 /** 54 * Flag indicating data allowed by network policy manager or not. 55 */ 56 private boolean mPolicyDataEnabled = true; 57 58 /** 59 * Indicate if metered APNs are enabled by the carrier. set false to block all the metered APNs 60 * from continuously sending requests, which causes undesired network load. 61 */ 62 private boolean mCarrierDataEnabled = true; 63 64 private final RegistrantList mDataEnabledChangedRegistrants = new RegistrantList(); 65 setInternalDataEnabled(boolean enabled)66 public synchronized void setInternalDataEnabled(boolean enabled) { 67 boolean prevDataEnabled = isDataEnabled(true); 68 mInternalDataEnabled = enabled; 69 if (prevDataEnabled != isDataEnabled(true)) { 70 notifyDataEnabledChanged(!prevDataEnabled, REASON_INTERNAL_DATA_ENABLED); 71 } 72 } isInternalDataEnabled()73 public synchronized boolean isInternalDataEnabled() { 74 return mInternalDataEnabled; 75 } 76 setUserDataEnabled(boolean enabled)77 public synchronized void setUserDataEnabled(boolean enabled) { 78 boolean prevDataEnabled = isDataEnabled(true); 79 mUserDataEnabled = enabled; 80 if (prevDataEnabled != isDataEnabled(true)) { 81 notifyDataEnabledChanged(!prevDataEnabled, REASON_USER_DATA_ENABLED); 82 } 83 } isUserDataEnabled()84 public synchronized boolean isUserDataEnabled() { 85 return mUserDataEnabled; 86 } 87 setPolicyDataEnabled(boolean enabled)88 public synchronized void setPolicyDataEnabled(boolean enabled) { 89 boolean prevDataEnabled = isDataEnabled(true); 90 mPolicyDataEnabled = enabled; 91 if (prevDataEnabled != isDataEnabled(true)) { 92 notifyDataEnabledChanged(!prevDataEnabled, REASON_POLICY_DATA_ENABLED); 93 } 94 } isPolicyDataEnabled()95 public synchronized boolean isPolicyDataEnabled() { 96 return mPolicyDataEnabled; 97 } 98 setCarrierDataEnabled(boolean enabled)99 public synchronized void setCarrierDataEnabled(boolean enabled) { 100 boolean prevDataEnabled = isDataEnabled(true); 101 mCarrierDataEnabled = enabled; 102 if (prevDataEnabled != isDataEnabled(true)) { 103 notifyDataEnabledChanged(!prevDataEnabled, REASON_DATA_ENABLED_BY_CARRIER); 104 } 105 } isCarrierDataEnabled()106 public synchronized boolean isCarrierDataEnabled() { 107 return mCarrierDataEnabled; 108 } 109 isDataEnabled(boolean checkUserDataEnabled)110 public synchronized boolean isDataEnabled(boolean checkUserDataEnabled) { 111 return (mInternalDataEnabled 112 && (!checkUserDataEnabled || mUserDataEnabled) 113 && (!checkUserDataEnabled || mPolicyDataEnabled) 114 && (!checkUserDataEnabled || mCarrierDataEnabled)); 115 } 116 notifyDataEnabledChanged(boolean enabled, int reason)117 private void notifyDataEnabledChanged(boolean enabled, int reason) { 118 mDataEnabledChangedRegistrants.notifyResult(new Pair<>(enabled, reason)); 119 } 120 registerForDataEnabledChanged(Handler h, int what, Object obj)121 public void registerForDataEnabledChanged(Handler h, int what, Object obj) { 122 mDataEnabledChangedRegistrants.addUnique(h, what, obj); 123 notifyDataEnabledChanged(isDataEnabled(true), REASON_REGISTERED); 124 } 125 unregisterForDataEnabledChanged(Handler h)126 public void unregisterForDataEnabledChanged(Handler h) { 127 mDataEnabledChangedRegistrants.remove(h); 128 } 129 } 130