Merge "Move VibratorHelper to a single threaded executor" into tm-qpr-dev am:...

import android.os.VibrationEffect;

import android.os.Vibrator;

import androidx.annotation.VisibleForTesting;

import com.android.systemui.dagger.SysUISingleton;

import com.android.systemui.dagger.qualifiers.Background;

import org.jetbrains.annotations.NotNull;

import java.util.concurrent.Executor;

import java.util.concurrent.Executors;

import javax.inject.Inject;

/**

 *

 * A Helper class that offloads {@link Vibrator} calls to a different thread.

 * {@link Vibrator} makes blocking calls that may cause SysUI to ANR.

 * TODO(b/245528624): Use regular Vibrator instance once new APIs are available.

 */

@SysUISingleton

public class VibratorHelper {

    private final Executor mExecutor;

    /**

     *

     * Creates a vibrator helper on a new single threaded {@link Executor}.

     */

    @Inject

    public VibratorHelper(@Nullable Vibrator vibrator, @Background Executor executor) {

    public VibratorHelper(@Nullable Vibrator vibrator) {

        this(vibrator, Executors.newSingleThreadExecutor());

    }

    /**

     * Creates new vibrator helper on a specific {@link Executor}.

     */

    @VisibleForTesting

    public VibratorHelper(@Nullable Vibrator vibrator, Executor executor) {

        mExecutor = executor;

        mVibrator = vibrator;

    }