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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 com.android.settings.dashboard;
     18 
     19 import android.accounts.Account;
     20 import android.accounts.AccountManager;
     21 import android.accounts.OnAccountsUpdateListener;
     22 import android.app.Activity;
     23 import android.content.Context;
     24 import android.net.ConnectivityManager;
     25 import android.net.Network;
     26 import android.net.NetworkCapabilities;
     27 import android.net.NetworkInfo;
     28 import android.net.NetworkRequest;
     29 import android.os.Bundle;
     30 import android.os.Handler;
     31 import android.os.Looper;
     32 import android.support.v7.widget.LinearLayoutManager;
     33 import android.support.v7.widget.RecyclerView;
     34 import android.view.LayoutInflater;
     35 import android.view.View;
     36 import android.view.ViewGroup;
     37 
     38 import com.android.internal.logging.MetricsProto;
     39 import com.android.settings.InstrumentedFragment;
     40 import com.android.settings.R;
     41 import com.android.settings.overlay.FeatureFactory;
     42 import com.android.settings.overlay.SupportFeatureProvider;
     43 
     44 /**
     45  * Fragment for support tab in SettingsGoogle.
     46  */
     47 public final class SupportFragment extends InstrumentedFragment implements View.OnClickListener,
     48         OnAccountsUpdateListener {
     49 
     50     private final Handler mHandler = new Handler(Looper.getMainLooper());
     51     private final ConnectivityManager.NetworkCallback mNetworkCallback =
     52             new ConnectivityManager.NetworkCallback() {
     53 
     54                 @Override
     55                 public void onCapabilitiesChanged(Network network,
     56                         NetworkCapabilities capabilities) {
     57                     postConnectivityChanged();
     58                 }
     59 
     60                 @Override
     61                 public void onAvailable(Network network) {
     62                     postConnectivityChanged();
     63                 }
     64 
     65                 @Override
     66                 public void onLost(Network network) {
     67                     postConnectivityChanged();
     68                 }
     69             };
     70 
     71     private Activity mActivity;
     72     private View mContent;
     73     private RecyclerView mRecyclerView;
     74     private SupportItemAdapter mSupportItemAdapter;
     75     private AccountManager mAccountManager;
     76     private SupportFeatureProvider mSupportFeatureProvider;
     77     private ConnectivityManager mConnectivityManager;
     78 
     79     @Override
     80     protected int getMetricsCategory() {
     81         return MetricsProto.MetricsEvent.SUPPORT_FRAGMENT;
     82     }
     83 
     84     @Override
     85     public void onCreate(Bundle savedInstanceState) {
     86         super.onCreate(savedInstanceState);
     87         mActivity = getActivity();
     88         mAccountManager = AccountManager.get(mActivity);
     89         mSupportFeatureProvider =
     90                 FeatureFactory.getFactory(mActivity).getSupportFeatureProvider(mActivity);
     91         mSupportItemAdapter = new SupportItemAdapter(mActivity, savedInstanceState,
     92                 mSupportFeatureProvider, this /* itemClickListener */);
     93         mConnectivityManager =
     94                 (ConnectivityManager) mActivity.getSystemService(Context.CONNECTIVITY_SERVICE);
     95     }
     96 
     97     @Override
     98     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     99             Bundle savedInstanceState) {
    100         mContent = inflater.inflate(R.layout.support_fragment, container, false);
    101         mRecyclerView = (RecyclerView) mContent.findViewById(R.id.support_items);
    102         mRecyclerView.setLayoutManager(new LinearLayoutManager(
    103                 getActivity(), LinearLayoutManager.VERTICAL, false /* reverseLayout */));
    104         mRecyclerView.setAdapter(mSupportItemAdapter);
    105         return mContent;
    106     }
    107 
    108     @Override
    109     public void onResume() {
    110         super.onResume();
    111         // Monitor account change.
    112         mAccountManager.addOnAccountsUpdatedListener(
    113                 this /* listener */, null /* handler */, true /* updateImmediately */);
    114         // Monitor connectivity
    115         mConnectivityManager.registerNetworkCallback(
    116                 new NetworkRequest.Builder()
    117                         .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
    118                         .build(),
    119                 mNetworkCallback);
    120         mSupportItemAdapter.setHasInternet(hasInternet());
    121     }
    122 
    123     @Override
    124     public void onPause() {
    125         super.onPause();
    126         // Stop monitor account change.
    127         mAccountManager.removeOnAccountsUpdatedListener(this /* listener */);
    128         // Stop monitor connectivity.
    129         mConnectivityManager.unregisterNetworkCallback(mNetworkCallback);
    130     }
    131 
    132     @Override
    133     public void onSaveInstanceState(Bundle outState) {
    134         super.onSaveInstanceState(outState);
    135         mSupportItemAdapter.onSaveInstanceState(outState);
    136     }
    137 
    138     @Override
    139     public void onAccountsUpdated(Account[] accounts) {
    140         // Account changed, update support items.
    141         mSupportItemAdapter.setAccount(
    142                 mSupportFeatureProvider.getSupportEligibleAccount(mActivity));
    143     }
    144 
    145     @Override
    146     public void onClick(View v) {
    147         final SupportItemAdapter.ViewHolder vh =
    148                 (SupportItemAdapter.ViewHolder) mRecyclerView.getChildViewHolder(v);
    149         mSupportItemAdapter.onItemClicked(vh.getAdapterPosition());
    150     }
    151 
    152     private void postConnectivityChanged() {
    153         mHandler.post(new Runnable() {
    154             @Override
    155             public void run() {
    156                 if (mSupportItemAdapter != null) {
    157                     mSupportItemAdapter.setHasInternet(hasInternet());
    158                 }
    159             }
    160         });
    161     }
    162 
    163     private boolean hasInternet() {
    164         final NetworkInfo activeNetwork = mConnectivityManager.getActiveNetworkInfo();
    165         return activeNetwork != null && activeNetwork.isConnectedOrConnecting();
    166     }
    167 }
    168