Update AOSP Dialer source from internal google3 repository at

cl/152373142.

Test: make, treehugger

This CL updates the AOSP Dialer source with all the changes that have
gone into the private google3 repository. This includes all the
changes from cl/151342913 (3/27/2017) to cl/152373142 (4/06/2017).

This goal of these drops is to keep the AOSP source in sync with the
internal google3 repository. Currently these sync are done by hand
with very minor modifications to the internal source code.
See the Android.mk file for list of modifications.
Our current goal is to do frequent drops (daily if possible) and
eventually switched to an automated process.

Change-Id: I2fbc88cf6867b90ac8b65f75e5e34468988c7217

1 files changed, 170 insertions, 0 deletions

diff --git a/java/com/android/dialer/common/concurrent/DialerUiTaskFragment.java b/java/com/android/dialer/common/concurrent/DialerUiTaskFragment.java
new file mode 100644
index 000000000..627336895
--- /dev/null
+++ b/java/com/android/dialer/common/concurrent/DialerUiTaskFragment.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2017 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.dialer.common.concurrent;
+
+import android.app.Fragment;
+import android.app.FragmentManager;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.annotation.MainThread;
+import android.support.annotation.Nullable;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.common.concurrent.AsyncTaskExecutors.SimpleAsyncTaskExecutor;
+import com.android.dialer.common.concurrent.DialerExecutor.FailureListener;
+import com.android.dialer.common.concurrent.DialerExecutor.SuccessListener;
+import com.android.dialer.common.concurrent.DialerExecutor.Worker;
+import java.util.concurrent.ExecutorService;
+
+/**
+ * Do not use this class directly. Instead use {@link DialerExecutors}.
+ *
+ * @param <InputT> the type of the object sent to the task upon execution
+ * @param <OutputT> the type of the result of the background computation
+ */
+public final class DialerUiTaskFragment<InputT, OutputT> extends Fragment {
+
+  private String taskId;
+  private Worker<InputT, OutputT> worker;
+  private SuccessListener<OutputT> successListener;
+  private FailureListener failureListener;
+
+  private AsyncTaskExecutor serialExecutor = AsyncTaskExecutors.createAsyncTaskExecutor();
+  private AsyncTaskExecutor parallelExecutor = AsyncTaskExecutors.createThreadPoolExecutor();
+
+  /**
+   * Creates a new {@link DialerUiTaskFragment} or gets an existing one in the event that a
+   * configuration change occurred while the previous activity's task was still running. Must be
+   * called from onCreate of your activity or fragment.
+   *
+   * @param taskId used for the headless fragment ID and task ID
+   * @param worker a function executed on a worker thread which accepts an {@link InputT} and
+   *     returns an {@link OutputT}. It should ideally not be an inner class of your
+   *     activity/fragment (meaning it should not be a lambda, anonymous, or non-static) but it can
+   *     be a static nested class. The static nested class should not contain any reference to UI,
+   *     including any activity or fragment or activity context, though it may reference some
+   *     threadsafe system objects such as the application context.
+   * @param successListener a function executed on the main thread upon task success. There are no
+   *     restraints on this as it is executed on the main thread, so lambdas, anonymous, or inner
+   *     classes of your activity or fragment are all fine.
+   * @param failureListener a function executed on the main thread upon task failure. The exception
+   *     is already logged so this can often be a no-op. There are no restraints on this as it is
+   *     executed on the main thread, so lambdas, anonymous, or inner classes of your activity or
+   *     fragment are all fine.
+   * @param <InputT> the type of the object sent to the task upon execution
+   * @param <OutputT> the type of the result of the background computation
+   * @return a {@link DialerUiTaskFragment} which may be used to call the "execute*" methods
+   */
+  @MainThread
+  static <InputT, OutputT> DialerUiTaskFragment<InputT, OutputT> create(
+      FragmentManager fragmentManager,
+      String taskId,
+      Worker<InputT, OutputT> worker,
+      SuccessListener<OutputT> successListener,
+      FailureListener failureListener,
+      @Nullable ExecutorService serialExecutorService,
+      @Nullable ExecutorService parallelExecutorService) {
+    Assert.isMainThread();
+
+    DialerUiTaskFragment<InputT, OutputT> fragment =
+        (DialerUiTaskFragment<InputT, OutputT>) fragmentManager.findFragmentByTag(taskId);
+
+    if (fragment == null) {
+      LogUtil.i("DialerUiTaskFragment.create", "creating new DialerUiTaskFragment");
+      fragment = new DialerUiTaskFragment<>();
+      fragmentManager.beginTransaction().add(fragment, taskId).commit();
+    }
+    fragment.taskId = taskId;
+    fragment.worker = worker;
+    fragment.successListener = successListener;
+    fragment.failureListener = failureListener;
+    if (serialExecutorService != null) {
+      fragment.serialExecutor = new SimpleAsyncTaskExecutor(serialExecutorService);
+    }
+    if (parallelExecutorService != null) {
+      fragment.parallelExecutor = new SimpleAsyncTaskExecutor(parallelExecutorService);
+    }
+    return fragment;
+  }
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setRetainInstance(true);
+  }
+
+  @Override
+  public void onDetach() {
+    super.onDetach();
+    LogUtil.enterBlock("DialerUiTaskFragment.onDetach");
+    taskId = null;
+    successListener = null;
+    failureListener = null;
+  }
+
+  void executeSerial(InputT input) {
+    serialExecutor.submit(taskId, new InternalTask(), input);
+  }
+
+  void executeParallel(InputT input) {
+    parallelExecutor.submit(taskId, new InternalTask(), input);
+  }
+
+  void executeOnCustomExecutor(ExecutorService executor, InputT input) {
+    new SimpleAsyncTaskExecutor(executor).submit(taskId, new InternalTask(), input);
+  }
+
+  private final class InternalTask extends AsyncTask<InputT, Void, InternalTaskResult<OutputT>> {
+
+    @SafeVarargs
+    @Override
+    protected final InternalTaskResult<OutputT> doInBackground(InputT... params) {
+      try {
+        return new InternalTaskResult<>(null, worker.doInBackground(params[0]));
+      } catch (Throwable throwable) {
+        LogUtil.e("InternalTask.doInBackground", "task failed", throwable);
+        return new InternalTaskResult<>(throwable, null);
+      }
+    }
+
+    @Override
+    protected void onPostExecute(InternalTaskResult<OutputT> result) {
+      if (result.throwable != null) {
+        if (failureListener == null) {
+          LogUtil.i("InternalTask.onPostExecute", "task failed but UI is dead");
+        } else {
+          failureListener.onFailure(result.throwable);
+        }
+      } else if (successListener == null) {
+        LogUtil.i("InternalTask.onPostExecute", "task succeeded but UI is dead");
+      } else {
+        successListener.onSuccess(result.result);
+      }
+    }
+  }
+
+  private static class InternalTaskResult<OutputT> {
+
+    private final Throwable throwable;
+    private final OutputT result;
+
+    InternalTaskResult(Throwable throwable, OutputT result) {
+      this.throwable = throwable;
+      this.result = result;
+    }
+  }
+}