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Diffstat (limited to 'src/com/android/email/EmailConnectivityManager.java')
| -rw-r--r-- | src/com/android/email/EmailConnectivityManager.java | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/src/com/android/email/EmailConnectivityManager.java b/src/com/android/email/EmailConnectivityManager.java deleted file mode 100644 index 90a511f06..000000000 --- a/src/com/android/email/EmailConnectivityManager.java +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (C) 2011 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 com.android.email; - -import android.content.BroadcastReceiver; -import android.content.ContentResolver; -import android.content.Context; -import android.content.Intent; -import android.content.IntentFilter; -import android.net.ConnectivityManager; -import android.net.NetworkInfo; -import android.net.NetworkInfo.State; -import android.os.Bundle; -import android.os.PowerManager; -import android.os.PowerManager.WakeLock; - -import com.android.mail.utils.LogUtils; - -/** - * Encapsulates functionality of ConnectivityManager for use in the Email application. In - * particular, this class provides callbacks for connectivity lost, connectivity restored, and - * background setting changed, as well as providing a method that waits for connectivity - * to be available without holding a wake lock - * - * To use, EmailConnectivityManager mgr = new EmailConnectivityManager(context, "Name"); - * When done, mgr.unregister() to unregister the internal receiver - * - * TODO: Use this class in ExchangeService - */ -public class EmailConnectivityManager extends BroadcastReceiver { - private static final String TAG = "EmailConnectivityMgr"; - - // Loop time while waiting (stopgap in case we don't get a broadcast) - private static final int CONNECTIVITY_WAIT_TIME = 10*60*1000; - - // Sentinel value for "no active network" - public static final int NO_ACTIVE_NETWORK = -1; - - // The name of this manager (used for logging) - private final String mName; - // The monitor lock we use while waiting for connectivity - private final Object mLock = new Object(); - // The instantiator's context - private final Context mContext; - // The wake lock used while running (so we don't fall asleep during execution/callbacks) - private final WakeLock mWakeLock; - private final android.net.ConnectivityManager mConnectivityManager; - - // Set when we abort waitForConnectivity() via stopWait - private boolean mStop = false; - // The thread waiting for connectivity - private Thread mWaitThread; - // Whether or not we're registered with the system connectivity manager - private boolean mRegistered = true; - - public EmailConnectivityManager(Context context, String name) { - mContext = context; - mName = name; - mConnectivityManager = - (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); - PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); - mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, name); - mContext.registerReceiver(this, new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)); - } - - public boolean isAutoSyncAllowed() { - return ContentResolver.getMasterSyncAutomatically(); - } - - public void stopWait() { - mStop = true; - Thread thread= mWaitThread; - if (thread != null) { - thread.interrupt(); - } - } - - /** - * Called when network connectivity has been restored; this method should be overridden by - * subclasses as necessary. NOTE: CALLED ON UI THREAD - * @param networkType as defined by ConnectivityManager - */ - public void onConnectivityRestored(int networkType) { - } - - /** - * Called when network connectivity has been lost; this method should be overridden by - * subclasses as necessary. NOTE: CALLED ON UI THREAD - * @param networkType as defined by ConnectivityManager - */ - public void onConnectivityLost(int networkType) { - } - - public void unregister() { - try { - mContext.unregisterReceiver(this); - } catch (RuntimeException e) { - // Don't crash if we didn't register - } finally { - mRegistered = false; - } - } - - @Override - public void onReceive(Context context, Intent intent) { - if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) { - Bundle extras = intent.getExtras(); - if (extras != null) { - NetworkInfo networkInfo = - (NetworkInfo)extras.get(ConnectivityManager.EXTRA_NETWORK_INFO); - if (networkInfo == null) return; - State state = networkInfo.getState(); - if (state == State.CONNECTED) { - synchronized (mLock) { - mLock.notifyAll(); - } - onConnectivityRestored(networkInfo.getType()); - } else if (state == State.DISCONNECTED) { - onConnectivityLost(networkInfo.getType()); - } - } - } - } - - /** - * Request current connectivity status - * @return whether there is connectivity at this time - */ - public boolean hasConnectivity() { - NetworkInfo info = mConnectivityManager.getActiveNetworkInfo(); - return (info != null); - } - - /** - * Get the type of the currently active data network - * @return the type of the active network (or NO_ACTIVE_NETWORK) - */ - public int getActiveNetworkType() { - return getActiveNetworkType(mConnectivityManager); - } - - static public int getActiveNetworkType(Context context) { - ConnectivityManager cm = - (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); - return getActiveNetworkType(cm); - } - - static public int getActiveNetworkType(ConnectivityManager cm) { - NetworkInfo info = cm.getActiveNetworkInfo(); - if (info == null) return NO_ACTIVE_NETWORK; - return info.getType(); - } - - public void waitForConnectivity() { - // If we're unregistered, throw an exception - if (!mRegistered) { - throw new IllegalStateException("ConnectivityManager not registered"); - } - boolean waiting = false; - mWaitThread = Thread.currentThread(); - // Acquire the wait lock while we work - mWakeLock.acquire(); - try { - while (!mStop) { - NetworkInfo info = mConnectivityManager.getActiveNetworkInfo(); - if (info != null) { - // We're done if there's an active network - if (waiting) { - if (DebugUtils.DEBUG) { - LogUtils.d(TAG, mName + ": Connectivity wait ended"); - } - } - return; - } else { - if (!waiting) { - if (DebugUtils.DEBUG) { - LogUtils.d(TAG, mName + ": Connectivity waiting..."); - } - waiting = true; - } - // Wait until a network is connected (or 10 mins), but let the device sleep - synchronized (mLock) { - // Don't hold a lock during our wait - mWakeLock.release(); - try { - mLock.wait(CONNECTIVITY_WAIT_TIME); - } catch (InterruptedException e) { - // This is fine; we just go around the loop again - } - // Get the lock back and check again for connectivity - mWakeLock.acquire(); - } - } - } - } finally { - // Make sure we always release the wait lock - if (mWakeLock.isHeld()) { - mWakeLock.release(); - } - mWaitThread = null; - } - } -} |