Merge "Use a weak reference to the context in InputManager" into udc-dev

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.ref.WeakReference;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

    private final IInputManager mIm;

    /**

     * InputManager has historically used its own static getter {@link #getInstance()} that doesn't

     * provide a context. We provide a Context to the InputManager instance through the

     * {@link android.app.SystemServiceRegistry}. Methods that need a Context must use

     * {@link #getContext()} to obtain it.

     * We hold a weak reference to the context to avoid leaking it indefinitely,

     * since we currently store the input manager instance as a static variable that

     * will outlive any context.

     */

    @Nullable

    private Context mLateInitContext;

    private WeakReference<Context> mWeakContext;

    /**

     * Whether a PointerIcon is shown for stylus pointers.

                    throw new IllegalStateException(e);

                }

            }

            if (sInstance.mLateInitContext == null) {

                sInstance.mLateInitContext = context;

            if (sInstance.mWeakContext == null || sInstance.mWeakContext.get() == null) {

                sInstance.mWeakContext = new WeakReference(context);

            }

            return sInstance;

        }

    @NonNull

    private Context getContext() {

        return Objects.requireNonNull(mLateInitContext,

        WeakReference<Context> weakContext = Objects.requireNonNull(mWeakContext,

                "A context is required for InputManager. Get the InputManager instance using "

                        + "Context#getSystemService before calling this method.");

        // If we get at this point, an app calling this function could potentially expect a

        // Context that has disappeared due to garbage collection. Holding a weak reference

        // is a temporary solution that should be resolved before the release of a

        // production version. This is being tracked in b/267758905

        return Objects.requireNonNull(weakContext.get(), "missing Context");

    }

    /**