| /* |
| * Copyright 2011 Google Inc. |
| * |
| * 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.google.ipc.invalidation.ticl.android2; |
| |
| import com.google.ipc.invalidation.external.client.SystemResources; |
| import com.google.ipc.invalidation.external.client.SystemResources.Scheduler; |
| import com.google.ipc.invalidation.external.client.android.service.AndroidLogger; |
| import com.google.ipc.invalidation.ticl.BasicSystemResources; |
| import com.google.ipc.invalidation.ticl.android2.channel.AndroidNetworkChannel; |
| import com.google.ipc.invalidation.util.Preconditions; |
| |
| import android.content.Context; |
| |
| /** |
| * Factory class for Android system resources. |
| * |
| */ |
| public class ResourcesFactory { |
| /** |
| * A scheduler that supports no operations. Used as the listener scheduler, which should never be |
| * called in Android. |
| */ |
| private static class InvalidScheduler implements Scheduler { |
| @Override |
| public void setSystemResources(SystemResources resources) { |
| } |
| |
| @Override |
| public void schedule(int delayMs, Runnable runnable) { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public boolean isRunningOnThread() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public long getCurrentTimeMs() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| } |
| |
| /** Implementation of {@link SystemResources} for the Android Ticl. */ |
| public static class AndroidResources extends BasicSystemResources { |
| /** Android system context. */ |
| private final Context context; |
| |
| /** Ticl-provided receiver for network events. */ |
| private NetworkChannel.NetworkListener networkListener; |
| |
| /** |
| * Creates an instance of resources for production code. |
| * |
| * @param context Android system context |
| * @param clock source of time for the internal scheduler |
| * @param logPrefix log prefix |
| */ |
| private AndroidResources(Context context, AndroidClock clock, String logPrefix) { |
| super(AndroidLogger.forPrefix(logPrefix), new AndroidInternalScheduler(context, clock), |
| new InvalidScheduler(), new AndroidNetworkChannel(context), new AndroidStorage(context), |
| getPlatformString()); |
| this.context = Preconditions.checkNotNull(context); |
| } |
| |
| /** Creates an instance for test from the provided resources and context. */ |
| |
| AndroidResources(Logger logger, AndroidInternalScheduler internalScheduler, |
| NetworkChannel network, Storage storage, Context context) { |
| super(logger, internalScheduler, new InvalidScheduler(), network, storage, |
| getPlatformString()); |
| this.context = Preconditions.checkNotNull(context); |
| } |
| |
| /** Returns the Android system context. */ |
| Context getContext() { |
| return context; |
| } |
| |
| /** |
| * Sets the network message listener provided by the Ticl. The network calls this method when |
| * the Ticl provides it with a listener; the Ticl service later retrieves the listener when |
| * it has a network event to communicate to the Ticl. |
| */ |
| public void setNetworkListener(NetworkChannel.NetworkListener networkListener) { |
| if (this.networkListener != null) { |
| throw new IllegalStateException("Listener already set: " + networkListener); |
| } |
| this.networkListener = Preconditions.checkNotNull(networkListener); |
| } |
| |
| /** Clears the network listener. */ |
| void clearNetworkListener() { |
| this.networkListener = null; |
| } |
| |
| /** Returns the network listener provided by the Ticl. */ |
| NetworkChannel.NetworkListener getNetworkListener() { |
| return Preconditions.checkNotNull(networkListener, "network listener not yet set"); |
| } |
| |
| /** Returns the platform string to use when constructing the resources. */ |
| private static String getPlatformString() { |
| return "Android-" + android.os.Build.VERSION.RELEASE; |
| } |
| } |
| |
| /** |
| * Creates a production instance. |
| * |
| * @param context Android system context |
| * @param clock source of time for the internal scheduler |
| * @param prefix log prefix |
| */ |
| static AndroidResources createResources(Context context, AndroidClock clock, String prefix) { |
| return new AndroidResources(context, clock, prefix); |
| } |
| |
| private ResourcesFactory() { |
| // Prevent instantiation. |
| } |
| } |