Moving various common executors to a single location

Change-Id: I44bca49b8adb6fa22c3b48d10f674e42c28d792c

7 files changed, 36 insertions, 36 deletions

diff --git a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
index 910fa0df6..7beb9db84 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
@@ -14,16 +14,17 @@
 
 package com.android.launcher3.uioverrides.plugins;
 
+import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
+
 import android.content.Context;
 import android.os.Looper;
 
-import com.android.launcher3.LauncherModel;
 import com.android.systemui.shared.plugins.PluginInitializer;
 
 public class PluginInitializerImpl implements PluginInitializer {
     @Override
     public Looper getBgLooper() {
-        return LauncherModel.getWorkerLooper();
+        return MODEL_EXECUTOR.getLooper();
     }
 
     @Override
diff --git a/quickstep/src/com/android/quickstep/OverviewInteractionState.java b/quickstep/src/com/android/quickstep/OverviewInteractionState.java
index 78b48d77a..858c3b6b3 100644
--- a/quickstep/src/com/android/quickstep/OverviewInteractionState.java
+++ b/quickstep/src/com/android/quickstep/OverviewInteractionState.java
@@ -15,20 +15,21 @@
  */
 package com.android.quickstep;
 
+import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
+
 import android.content.Context;
 import android.os.Handler;
 import android.os.Message;
 import android.os.RemoteException;
 import android.util.Log;
 
+import androidx.annotation.WorkerThread;
+
 import com.android.launcher3.Utilities;
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.util.MainThreadInitializedObject;
-import com.android.launcher3.util.UiThreadHelper;
 import com.android.systemui.shared.recents.ISystemUiProxy;
 
-import androidx.annotation.WorkerThread;
-
 /**
  * Sets alpha for the back button
  */
@@ -62,7 +63,7 @@ public class OverviewInteractionState {
         // because of its high send frequency and data may be very different than the previous value
         // For example, send back alpha on uihandler to avoid flickering when setting its visibility
         mUiHandler = new Handler(this::handleUiMessage);
-        mBgHandler = new Handler(UiThreadHelper.getBackgroundLooper(), this::handleBgMessage);
+        mBgHandler = new Handler(UI_HELPER_EXECUTOR.getLooper(), this::handleBgMessage);
 
         onNavigationModeChanged(SysUINavigationMode.INSTANCE.get(context)
                 .addModeChangeListener(this::onNavigationModeChanged));
diff --git a/quickstep/src/com/android/quickstep/RecentTasksList.java b/quickstep/src/com/android/quickstep/RecentTasksList.java
index 71ce32b28..10f9febfb 100644
--- a/quickstep/src/com/android/quickstep/RecentTasksList.java
+++ b/quickstep/src/com/android/quickstep/RecentTasksList.java
@@ -16,7 +16,7 @@
 
 package com.android.quickstep;
 
-import static com.android.quickstep.TouchInteractionService.BACKGROUND_EXECUTOR;
+import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 
 import android.annotation.TargetApi;
 import android.app.ActivityManager;
@@ -26,11 +26,12 @@ import android.util.SparseBooleanArray;
 
 import androidx.annotation.VisibleForTesting;
 
-import com.android.launcher3.MainThreadExecutor;
+import com.android.launcher3.util.LooperExecutor;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.KeyguardManagerCompat;
 import com.android.systemui.shared.system.TaskStackChangeListener;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -43,7 +44,7 @@ import java.util.function.Consumer;
 public class RecentTasksList extends TaskStackChangeListener {
 
     private final KeyguardManagerCompat mKeyguardManager;
-    private final MainThreadExecutor mMainThreadExecutor;
+    private final LooperExecutor mMainThreadExecutor;
     private final ActivityManagerWrapper mActivityManagerWrapper;
 
     // The list change id, increments as the task list changes in the system
@@ -55,8 +56,7 @@ public class RecentTasksList extends TaskStackChangeListener {
 
     ArrayList<Task> mTasks = new ArrayList<>();
 
-
-    public RecentTasksList(MainThreadExecutor mainThreadExecutor,
+    public RecentTasksList(LooperExecutor mainThreadExecutor,
             KeyguardManagerCompat keyguardManager, ActivityManagerWrapper activityManagerWrapper) {
         mMainThreadExecutor = mainThreadExecutor;
         mKeyguardManager = keyguardManager;
@@ -70,7 +70,7 @@ public class RecentTasksList extends TaskStackChangeListener {
      */
     public void getTaskKeys(int numTasks, Consumer<ArrayList<Task>> callback) {
         // Kick off task loading in the background
-        BACKGROUND_EXECUTOR.execute(() -> {
+        UI_HELPER_EXECUTOR.execute(() -> {
             ArrayList<Task> tasks = loadTasksInBackground(numTasks, true /* loadKeysOnly */);
             mMainThreadExecutor.execute(() -> callback.accept(tasks));
         });
@@ -92,12 +92,12 @@ public class RecentTasksList extends TaskStackChangeListener {
         if (mLastLoadedId == mChangeId && (!mLastLoadHadKeysOnly || loadKeysOnly)) {
             // The list is up to date, send the callback on the next frame,
             // so that requestID can be returned first.
-            mMainThreadExecutor.getHandler().post(resultCallback);
+            mMainThreadExecutor.post(resultCallback);
             return requestLoadId;
         }
 
         // Kick off task loading in the background
-        BACKGROUND_EXECUTOR.execute(() -> {
+        UI_HELPER_EXECUTOR.execute(() -> {
             ArrayList<Task> tasks = loadTasksInBackground(Integer.MAX_VALUE, loadKeysOnly);
 
             mMainThreadExecutor.execute(() -> {
diff --git a/quickstep/src/com/android/quickstep/RecentsActivityTracker.java b/quickstep/src/com/android/quickstep/RecentsActivityTracker.java
index f9d2f11cb..4d1d9ef8a 100644
--- a/quickstep/src/com/android/quickstep/RecentsActivityTracker.java
+++ b/quickstep/src/com/android/quickstep/RecentsActivityTracker.java
@@ -15,6 +15,8 @@
  */
 package com.android.quickstep;
 
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Intent;
@@ -22,7 +24,6 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 
-import com.android.launcher3.MainThreadExecutor;
 import com.android.quickstep.ActivityControlHelper.ActivityInitListener;
 import com.android.quickstep.util.RemoteAnimationProvider;
 
@@ -92,14 +93,10 @@ public class RecentsActivityTracker<T extends BaseRecentsActivity> implements Ac
     private static class Scheduler implements Runnable {
 
         private WeakReference<RecentsActivityTracker> mPendingTracker = new WeakReference<>(null);
-        private MainThreadExecutor mMainThreadExecutor;
 
         public synchronized void schedule(RecentsActivityTracker tracker) {
             mPendingTracker = new WeakReference<>(tracker);
-            if (mMainThreadExecutor == null) {
-                mMainThreadExecutor = new MainThreadExecutor();
-            }
-            mMainThreadExecutor.execute(this);
+            MAIN_EXECUTOR.execute(this);
         }
 
         @Override
diff --git a/quickstep/src/com/android/quickstep/RecentsModel.java b/quickstep/src/com/android/quickstep/RecentsModel.java
index d9ecdcd56..2e59ed5e4 100644
--- a/quickstep/src/com/android/quickstep/RecentsModel.java
+++ b/quickstep/src/com/android/quickstep/RecentsModel.java
@@ -15,6 +15,10 @@
  */
 package com.android.quickstep;
 
+import static android.os.Process.THREAD_PRIORITY_BACKGROUND;
+
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+import static com.android.launcher3.util.Executors.createAndStartNewLooper;
 import static com.android.quickstep.TaskUtils.checkCurrentOrManagedUserId;
 
 import android.annotation.TargetApi;
@@ -22,13 +26,12 @@ import android.app.ActivityManager;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
 import android.os.Build;
-import android.os.HandlerThread;
+import android.os.Looper;
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.util.Log;
 
-import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.compat.LauncherAppsCompat;
 import com.android.launcher3.compat.LauncherAppsCompat.OnAppsChangedCallbackCompat;
 import com.android.launcher3.util.MainThreadInitializedObject;
@@ -66,13 +69,12 @@ public class RecentsModel extends TaskStackChangeListener {
 
     private RecentsModel(Context context) {
         mContext = context;
-        HandlerThread loaderThread = new HandlerThread("TaskThumbnailIconCache",
-                Process.THREAD_PRIORITY_BACKGROUND);
-        loaderThread.start();
-        mTaskList = new RecentTasksList(new MainThreadExecutor(),
+        Looper looper =
+                createAndStartNewLooper("TaskThumbnailIconCache", THREAD_PRIORITY_BACKGROUND);
+        mTaskList = new RecentTasksList(MAIN_EXECUTOR,
                 new KeyguardManagerCompat(context), ActivityManagerWrapper.getInstance());
-        mIconCache = new TaskIconCache(context, loaderThread.getLooper());
-        mThumbnailCache = new TaskThumbnailCache(context, loaderThread.getLooper());
+        mIconCache = new TaskIconCache(context, looper);
+        mThumbnailCache = new TaskThumbnailCache(context, looper);
         ActivityManagerWrapper.getInstance().registerTaskStackListener(this);
         setupPackageListener();
     }
diff --git a/quickstep/src/com/android/quickstep/TaskIconCache.java b/quickstep/src/com/android/quickstep/TaskIconCache.java
index 5e0195806..289a12970 100644
--- a/quickstep/src/com/android/quickstep/TaskIconCache.java
+++ b/quickstep/src/com/android/quickstep/TaskIconCache.java
@@ -16,6 +16,7 @@
 package com.android.quickstep;
 
 import static com.android.launcher3.uioverrides.RecentsUiFactory.GO_LOW_RAM_RECENTS_ENABLED;
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 
 import android.content.ComponentName;
 import android.content.Context;
@@ -27,7 +28,6 @@ import android.os.Looper;
 import android.util.LruCache;
 import android.view.accessibility.AccessibilityManager;
 
-import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.icons.cache.HandlerRunnable;
@@ -47,7 +47,6 @@ import java.util.function.Consumer;
 public class TaskIconCache {
 
     private final Handler mBackgroundHandler;
-    private final MainThreadExecutor mMainThreadExecutor;
     private final AccessibilityManager mAccessibilityManager;
 
     private final NormalizedIconLoader mIconLoader;
@@ -68,7 +67,6 @@ public class TaskIconCache {
 
     public TaskIconCache(Context context, Looper backgroundLooper) {
         mBackgroundHandler = new Handler(backgroundLooper);
-        mMainThreadExecutor = new MainThreadExecutor();
         mAccessibilityManager = context.getSystemService(AccessibilityManager.class);
 
         Resources res = context.getResources();
@@ -104,7 +102,7 @@ public class TaskIconCache {
                     // We don't call back to the provided callback in this case
                     return;
                 }
-                mMainThreadExecutor.execute(() -> {
+                MAIN_EXECUTOR.execute(() -> {
                     task.icon = icon;
                     task.titleDescription = contentDescription;
                     callback.accept(task);
diff --git a/quickstep/src/com/android/quickstep/TaskThumbnailCache.java b/quickstep/src/com/android/quickstep/TaskThumbnailCache.java
index 57c5a2783..3b50c2623 100644
--- a/quickstep/src/com/android/quickstep/TaskThumbnailCache.java
+++ b/quickstep/src/com/android/quickstep/TaskThumbnailCache.java
@@ -15,12 +15,14 @@
  */
 package com.android.quickstep;
 
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+
 import android.app.ActivityManager;
 import android.content.Context;
 import android.content.res.Resources;
 import android.os.Handler;
 import android.os.Looper;
-import com.android.launcher3.MainThreadExecutor;
+
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.icons.cache.HandlerRunnable;
@@ -30,13 +32,13 @@ import com.android.systemui.shared.recents.model.Task.TaskKey;
 import com.android.systemui.shared.recents.model.TaskKeyLruCache;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
+
 import java.util.ArrayList;
 import java.util.function.Consumer;
 
 public class TaskThumbnailCache {
 
     private final Handler mBackgroundHandler;
-    private final MainThreadExecutor mMainThreadExecutor;
 
     private final int mCacheSize;
     private final ThumbnailCache mCache;
@@ -94,7 +96,6 @@ public class TaskThumbnailCache {
 
     public TaskThumbnailCache(Context context, Looper backgroundLooper) {
         mBackgroundHandler = new Handler(backgroundLooper);
-        mMainThreadExecutor = new MainThreadExecutor();
         mHighResLoadingState = new HighResLoadingState(context);
 
         Resources res = context.getResources();
@@ -168,7 +169,7 @@ public class TaskThumbnailCache {
                     // We don't call back to the provided callback in this case
                     return;
                 }
-                mMainThreadExecutor.execute(() -> {
+                MAIN_EXECUTOR.execute(() -> {
                     mCache.put(key, thumbnail);
                     callback.accept(thumbnail);
                     onEnd();