mobile/android/base/fxa/sync/FxAccountSyncStatusHelper.java@6474c204b198 (annotated)
mobile/android/base/fxa/sync/FxAccountSyncStatusHelper.java
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | package org.mozilla.gecko.fxa.sync; |
| michael@0 | 6 | |
| michael@0 | 7 | import java.util.Map; |
| michael@0 | 8 | import java.util.Map.Entry; |
| michael@0 | 9 | import java.util.WeakHashMap; |
| michael@0 | 10 | |
| michael@0 | 11 | import org.mozilla.gecko.fxa.FirefoxAccounts; |
| michael@0 | 12 | import org.mozilla.gecko.fxa.authenticator.AndroidFxAccount; |
| michael@0 | 13 | |
| michael@0 | 14 | import android.content.ContentResolver; |
| michael@0 | 15 | import android.content.SyncStatusObserver; |
| michael@0 | 16 | |
| michael@0 | 17 | /** |
| michael@0 | 18 | * Abstract away some details of Android's SyncStatusObserver. |
| michael@0 | 19 | * <p> |
| michael@0 | 20 | * Provides a simplified sync started/sync finished delegate. |
| michael@0 | 21 | */ |
| michael@0 | 22 | public class FxAccountSyncStatusHelper implements SyncStatusObserver { |
| michael@0 | 23 | @SuppressWarnings("unused") |
| michael@0 | 24 | private static final String LOG_TAG = FxAccountSyncStatusHelper.class.getSimpleName(); |
| michael@0 | 25 | |
| michael@0 | 26 | protected static FxAccountSyncStatusHelper sInstance = null; |
| michael@0 | 27 | |
| michael@0 | 28 | public synchronized static FxAccountSyncStatusHelper getInstance() { |
| michael@0 | 29 | if (sInstance == null) { |
| michael@0 | 30 | sInstance = new FxAccountSyncStatusHelper(); |
| michael@0 | 31 | } |
| michael@0 | 32 | return sInstance; |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | // Used to unregister this as a listener. |
| michael@0 | 36 | protected Object handle = null; |
| michael@0 | 37 | |
| michael@0 | 38 | // Maps delegates to whether their underlying Android account was syncing the |
| michael@0 | 39 | // last time we observed a status change. |
| michael@0 | 40 | protected Map<FirefoxAccounts.SyncStatusListener, Boolean> delegates = new WeakHashMap<FirefoxAccounts.SyncStatusListener, Boolean>(); |
| michael@0 | 41 | |
| michael@0 | 42 | @Override |
| michael@0 | 43 | public synchronized void onStatusChanged(int which) { |
| michael@0 | 44 | for (Entry<FirefoxAccounts.SyncStatusListener, Boolean> entry : delegates.entrySet()) { |
| michael@0 | 45 | final FirefoxAccounts.SyncStatusListener delegate = entry.getKey(); |
| michael@0 | 46 | final AndroidFxAccount fxAccount = new AndroidFxAccount(delegate.getContext(), delegate.getAccount()); |
| michael@0 | 47 | final boolean active = fxAccount.isCurrentlySyncing(); |
| michael@0 | 48 | // Remember for later. |
| michael@0 | 49 | boolean wasActiveLastTime = entry.getValue(); |
| michael@0 | 50 | // It's okay to update the value of an entry while iterating the entrySet. |
| michael@0 | 51 | entry.setValue(active); |
| michael@0 | 52 | |
| michael@0 | 53 | if (active && !wasActiveLastTime) { |
| michael@0 | 54 | // We've started a sync. |
| michael@0 | 55 | delegate.onSyncStarted(); |
| michael@0 | 56 | } |
| michael@0 | 57 | if (!active && wasActiveLastTime) { |
| michael@0 | 58 | // We've finished a sync. |
| michael@0 | 59 | delegate.onSyncFinished(); |
| michael@0 | 60 | } |
| michael@0 | 61 | } |
| michael@0 | 62 | } |
| michael@0 | 63 | |
| michael@0 | 64 | protected void addListener() { |
| michael@0 | 65 | final int mask = ContentResolver.SYNC_OBSERVER_TYPE_ACTIVE; |
| michael@0 | 66 | if (this.handle != null) { |
| michael@0 | 67 | throw new IllegalStateException("Already registered this as an observer?"); |
| michael@0 | 68 | } |
| michael@0 | 69 | this.handle = ContentResolver.addStatusChangeListener(mask, this); |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | protected void removeListener() { |
| michael@0 | 73 | Object handle = this.handle; |
| michael@0 | 74 | this.handle = null; |
| michael@0 | 75 | if (handle != null) { |
| michael@0 | 76 | ContentResolver.removeStatusChangeListener(handle); |
| michael@0 | 77 | } |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | public synchronized void startObserving(FirefoxAccounts.SyncStatusListener delegate) { |
| michael@0 | 81 | if (delegate == null) { |
| michael@0 | 82 | throw new IllegalArgumentException("delegate must not be null"); |
| michael@0 | 83 | } |
| michael@0 | 84 | if (delegates.containsKey(delegate)) { |
| michael@0 | 85 | return; |
| michael@0 | 86 | } |
| michael@0 | 87 | // If we are the first delegate to the party, start listening. |
| michael@0 | 88 | if (delegates.isEmpty()) { |
| michael@0 | 89 | addListener(); |
| michael@0 | 90 | } |
| michael@0 | 91 | delegates.put(delegate, Boolean.FALSE); |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | public synchronized void stopObserving(FirefoxAccounts.SyncStatusListener delegate) { |
| michael@0 | 95 | delegates.remove(delegate); |
| michael@0 | 96 | // If we are the last delegate leaving the party, stop listening. |
| michael@0 | 97 | if (delegates.isEmpty()) { |
| michael@0 | 98 | removeListener(); |
| michael@0 | 99 | } |
| michael@0 | 100 | } |
| michael@0 | 101 | } |
