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      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 android.support.car;
     18 
     19 import java.util.HashMap;
     20 import java.util.Map;
     21 
     22 /**
     23  * Implementation of {@link CarAppContextManager} for embedded.
     24  * @hide
     25  */
     26 public class CarAppContextManagerEmbedded extends CarAppContextManager {
     27 
     28     private final android.car.CarAppContextManager mManager;
     29     private AppContextChangeListenerProxy mListener;
     30     private final Map<Integer, AppContextOwnershipChangeListenerProxy> mOwnershipListeners;
     31 
     32     /**
     33      * @hide
     34      */
     35     CarAppContextManagerEmbedded(Object manager) {
     36         mManager = (android.car.CarAppContextManager) manager;
     37         mOwnershipListeners = new HashMap<Integer, AppContextOwnershipChangeListenerProxy>();
     38     }
     39 
     40     @Override
     41     public void registerContextListener(AppContextChangeListener listener, int contextFilter)
     42             throws CarNotConnectedException {
     43         if (listener == null) {
     44             throw new IllegalArgumentException("null listener");
     45         }
     46         AppContextChangeListenerProxy proxy = new AppContextChangeListenerProxy(listener);
     47         synchronized(this) {
     48             mListener = proxy;
     49         }
     50         try {
     51             mManager.registerContextListener(proxy, contextFilter);
     52         } catch (android.car.CarNotConnectedException e) {
     53             throw new CarNotConnectedException(e);
     54         }
     55     }
     56 
     57     @Override
     58     public void unregisterContextListener() throws CarNotConnectedException {
     59         synchronized(this) {
     60             mListener = null;
     61         }
     62         try {
     63             mManager.unregisterContextListener();
     64         } catch (android.car.CarNotConnectedException e) {
     65             throw new CarNotConnectedException(e);
     66         }
     67 
     68     }
     69 
     70     @Override
     71     public int getActiveAppContexts() throws CarNotConnectedException {
     72         try {
     73             return mManager.getActiveAppContexts();
     74         } catch (android.car.CarNotConnectedException e) {
     75             throw new CarNotConnectedException(e);
     76         }
     77     }
     78 
     79     @Override
     80     public boolean isOwningContext(int context) throws CarNotConnectedException {
     81         try {
     82             return mManager.isOwningContext(context);
     83         } catch (android.car.CarNotConnectedException e) {
     84             throw new CarNotConnectedException(e);
     85         }
     86     }
     87 
     88     @Override
     89     public void setActiveContexts(AppContextOwnershipChangeListener ownershipListener,
     90             int contexts) throws IllegalStateException, SecurityException,
     91             CarNotConnectedException {
     92         if (ownershipListener == null) {
     93             throw new IllegalArgumentException("null listener");
     94         }
     95         AppContextOwnershipChangeListenerProxy proxy =
     96                 new AppContextOwnershipChangeListenerProxy(ownershipListener);
     97         synchronized(this) {
     98             for (int flag = APP_CONTEXT_START_FLAG; flag <= APP_CONTEXT_END_FLAG; flag <<= 1) {
     99                 if ((flag & contexts) != 0) {
    100                     mOwnershipListeners.put(flag, proxy);
    101                 }
    102             }
    103         }
    104         try{
    105             mManager.setActiveContexts(proxy, contexts);
    106         } catch (android.car.CarNotConnectedException e) {
    107             throw new CarNotConnectedException(e);
    108         }
    109     }
    110 
    111     @Override
    112     public void resetActiveContexts(int contexts) throws CarNotConnectedException {
    113         try {
    114             mManager.resetActiveContexts(contexts);
    115         } catch (android.car.CarNotConnectedException e) {
    116             throw new CarNotConnectedException(e);
    117         }
    118         synchronized (this) {
    119             for (int flag = APP_CONTEXT_START_FLAG; flag <= APP_CONTEXT_END_FLAG; flag <<= 1) {
    120                 if ((flag & contexts) != 0) {
    121                    mOwnershipListeners.remove(flag);
    122                 }
    123             }
    124         }
    125     }
    126 
    127     @Override
    128     public void onCarDisconnected() {
    129         // nothing to do
    130     }
    131 
    132     private static class AppContextChangeListenerProxy implements
    133             android.car.CarAppContextManager.AppContextChangeListener {
    134 
    135         private final AppContextChangeListener mListener;
    136 
    137         public AppContextChangeListenerProxy(AppContextChangeListener listener) {
    138             mListener = listener;
    139         }
    140 
    141         @Override
    142         public void onAppContextChange(int activeContexts) {
    143             mListener.onAppContextChange(activeContexts);
    144         }
    145     }
    146 
    147     private static class AppContextOwnershipChangeListenerProxy implements
    148             android.car.CarAppContextManager.AppContextOwnershipChangeListener {
    149 
    150         private final AppContextOwnershipChangeListener mListener;
    151 
    152         public AppContextOwnershipChangeListenerProxy(AppContextOwnershipChangeListener listener) {
    153             mListener = listener;
    154         }
    155 
    156         @Override
    157         public void onAppContextOwnershipLoss(int context) {
    158             mListener.onAppContextOwnershipLoss(context);
    159         }
    160     }
    161 }
    162