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Diffstat (limited to 'core/java/android/accounts/AccountMonitor.java')
| -rw-r--r-- | core/java/android/accounts/AccountMonitor.java | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/core/java/android/accounts/AccountMonitor.java b/core/java/android/accounts/AccountMonitor.java deleted file mode 100644 index f21385e..0000000 --- a/core/java/android/accounts/AccountMonitor.java +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package android.accounts; - -import android.content.BroadcastReceiver; -import android.content.ComponentName; -import android.content.Context; -import android.content.Intent; -import android.content.IntentFilter; -import android.content.ServiceConnection; -import android.database.SQLException; -import android.os.IBinder; -import android.os.Process; -import android.os.RemoteException; -import android.util.Log; - -/** - * A helper class that calls back on the provided - * AccountMonitorListener with the set of current accounts both when - * it gets created and whenever the set changes. It does this by - * binding to the AccountsService and registering to receive the - * intent broadcast when the set of accounts is changed. The - * connection to the accounts service is only made when it needs to - * fetch the current list of accounts (that is, when the - * AccountMonitor is first created, and when the intent is received). - */ -public class AccountMonitor extends BroadcastReceiver implements ServiceConnection { - private final Context mContext; - private final AccountMonitorListener mListener; - private boolean mClosed = false; - private int pending = 0; - - // This thread runs in the background and runs the code to update accounts - // in the listener. - private class AccountUpdater extends Thread { - private IBinder mService; - - public AccountUpdater(IBinder service) { - mService = service; - } - - @Override - public void run() { - Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); - IAccountsService accountsService = IAccountsService.Stub.asInterface(mService); - String[] accounts = null; - do { - try { - accounts = accountsService.getAccounts(); - } catch (RemoteException e) { - // if the service was killed then the system will restart it and when it does we - // will get another onServiceConnected, at which point we will do a notify. - Log.w("AccountMonitor", "Remote exception when getting accounts", e); - return; - } - - synchronized (AccountMonitor.this) { - --pending; - if (pending == 0) { - break; - } - } - } while (true); - - mContext.unbindService(AccountMonitor.this); - - try { - mListener.onAccountsUpdated(accounts); - } catch (SQLException e) { - // Better luck next time. If the problem was disk-full, - // the STORAGE_OK intent will re-trigger the update. - Log.e("AccountMonitor", "Can't update accounts", e); - } - } - } - - /** - * Initializes the AccountMonitor and initiates a bind to the - * AccountsService to get the initial account list. For 1.0, - * the "list" is always a single account. - * - * @param context the context we are running in - * @param listener the user to notify when the account set changes - */ - public AccountMonitor(Context context, AccountMonitorListener listener) { - if (listener == null) { - throw new IllegalArgumentException("listener is null"); - } - - mContext = context; - mListener = listener; - - // Register a broadcast receiver to monitor account changes - IntentFilter intentFilter = new IntentFilter(); - intentFilter.addAction(AccountsServiceConstants.LOGIN_ACCOUNTS_CHANGED_ACTION); - intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK); // To recover from disk-full. - mContext.registerReceiver(this, intentFilter); - - // Send the listener the initial state now. - notifyListener(); - } - - @Override - public void onReceive(Context context, Intent intent) { - notifyListener(); - } - - public void onServiceConnected(ComponentName className, IBinder service) { - // Create a background thread to update the accounts. - new AccountUpdater(service).start(); - } - - public void onServiceDisconnected(ComponentName className) { - } - - private synchronized void notifyListener() { - if (pending == 0) { - // initiate the bind - if (!mContext.bindService(AccountsServiceConstants.SERVICE_INTENT, - this, Context.BIND_AUTO_CREATE)) { - // This is normal if GLS isn't part of this build. - Log.w("AccountMonitor", - "Couldn't connect to " + - AccountsServiceConstants.SERVICE_INTENT + - " (Missing service?)"); - } - } else { - // already bound. bindService will not trigger another - // call to onServiceConnected, so instead we make sure - // that the existing background thread will call - // getAccounts() after this function returns, by - // incrementing pending. - // - // Yes, this else clause contains only a comment. - } - ++pending; - } - - /** - * calls close() - * @throws Throwable - */ - @Override - protected void finalize() throws Throwable { - close(); - super.finalize(); - } - - /** - * Unregisters the account receiver. Consecutive calls to this - * method are harmless, but also do nothing. Once this call is - * made no more notifications will occur. - */ - public synchronized void close() { - if (!mClosed) { - mContext.unregisterReceiver(this); - mClosed = true; - } - } -} |