| 1 | // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | package org.chromium.sync.signin; |
| 6 | |
| 7 | import android.accounts.Account; |
| 8 | import android.content.Context; |
| 9 | import android.os.AsyncTask; |
| 10 | import android.preference.PreferenceManager; |
| 11 | import android.util.Log; |
| 12 | |
| 13 | import com.google.common.annotations.VisibleForTesting; |
| 14 | import com.google.ipc.invalidation.external.client.contrib.MultiplexingGcmListener; |
| 15 | |
| 16 | import org.chromium.base.ObserverList; |
| 17 | |
| 18 | public class ChromeSigninController { |
| 19 | public interface Listener { |
| 20 | /** |
| 21 | * Called when the user signs out of Chrome. |
| 22 | */ |
| 23 | void onClearSignedInUser(); |
| 24 | } |
| 25 | |
| 26 | public static final String TAG = "ChromeSigninController"; |
| 27 | |
| 28 | @VisibleForTesting |
| 29 | public static final String SIGNED_IN_ACCOUNT_KEY = "google.services.username"; |
| 30 | |
| 31 | private static final Object LOCK = new Object(); |
| 32 | |
| 33 | private static ChromeSigninController sChromeSigninController; |
| 34 | |
| 35 | private final Context mApplicationContext; |
| 36 | |
| 37 | private final ObserverList<Listener> mListeners = new ObserverList<Listener>(); |
| 38 | |
| 39 | private boolean mGcmInitialized; |
| 40 | |
| 41 | private ChromeSigninController(Context context) { |
| 42 | mApplicationContext = context.getApplicationContext(); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * A factory method for the ChromeSigninController. |
| 47 | * |
| 48 | * @param context the ApplicationContext is retrieved from the context used as an argument. |
| 49 | * @return a singleton instance of the ChromeSigninController |
| 50 | */ |
| 51 | public static ChromeSigninController get(Context context) { |
| 52 | synchronized (LOCK) { |
| 53 | if (sChromeSigninController == null) { |
| 54 | sChromeSigninController = new ChromeSigninController(context); |
| 55 | } |
| 56 | } |
| 57 | return sChromeSigninController; |
| 58 | } |
| 59 | |
| 60 | public Account getSignedInUser() { |
| 61 | String syncAccountName = getSignedInAccountName(); |
| 62 | if (syncAccountName == null) { |
| 63 | return null; |
| 64 | } |
| 65 | return AccountManagerHelper.createAccountFromName(syncAccountName); |
| 66 | } |
| 67 | |
| 68 | public boolean isSignedIn() { |
| 69 | return getSignedInAccountName() != null; |
| 70 | } |
| 71 | |
| 72 | public void setSignedInAccountName(String accountName) { |
| 73 | PreferenceManager.getDefaultSharedPreferences(mApplicationContext).edit() |
| 74 | .putString(SIGNED_IN_ACCOUNT_KEY, accountName) |
| 75 | .apply(); |
| 76 | } |
| 77 | |
| 78 | public void clearSignedInUser() { |
| 79 | Log.d(TAG, "Clearing user signed in to Chrome"); |
| 80 | setSignedInAccountName(null); |
| 81 | |
| 82 | for (Listener listener : mListeners) { |
| 83 | listener.onClearSignedInUser(); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | public String getSignedInAccountName() { |
| 88 | return PreferenceManager.getDefaultSharedPreferences(mApplicationContext) |
| 89 | .getString(SIGNED_IN_ACCOUNT_KEY, null); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Adds a Listener. |
| 94 | * @param listener Listener to add. |
| 95 | */ |
| 96 | public void addListener(Listener listener) { |
| 97 | mListeners.addObserver(listener); |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Removes a Listener. |
| 102 | * @param listener Listener to remove from the list. |
| 103 | */ |
| 104 | public void removeListener(Listener listener) { |
| 105 | mListeners.removeObserver(listener); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Registers for Google Cloud Messaging (GCM) if there is no existing registration. |
| 110 | */ |
| 111 | public void ensureGcmIsInitialized() { |
| 112 | if (mGcmInitialized) return; |
| 113 | mGcmInitialized = true; |
| 114 | new AsyncTask<Void, Void, Void>() { |
| 115 | @Override |
| 116 | protected Void doInBackground(Void... arg0) { |
| 117 | try { |
| 118 | String regId = MultiplexingGcmListener.initializeGcm(mApplicationContext); |
| 119 | if (!regId.isEmpty()) |
| 120 | Log.d(TAG, "Already registered with GCM"); |
| 121 | } catch (IllegalStateException exception) { |
| 122 | Log.w(TAG, "Application manifest does not correctly configure GCM; " |
| 123 | + "sync notifications will not work", exception); |
| 124 | } catch (UnsupportedOperationException exception) { |
| 125 | Log.w(TAG, "Device does not support GCM; sync notifications will not work", |
| 126 | exception); |
| 127 | } |
| 128 | return null; |
| 129 | } |
| 130 | }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR); |
| 131 | } |
| 132 | } |