Make IInputMethodPrivilegedOperations to async (1/N)

-. Remove VoidResultCallback of setImeWindowStatus
   and let it be asynchronous.
-. Rename function naming to setImeWindowStatusAsync.

Bug: 183587528
Test: atest CtsInputMethodTestCases
Change-Id: Ia9f19ca5ae418089ce43816dcd50487e1b1172f1

core/java/android/inputmethodservice/InputMethodService.java

@@ -938,7 +938,7 @@ public class InputMethodService extends AbstractInputMethodService {
     }
 
     private void setImeWindowStatus(int visibilityFlags, int backDisposition) {
-        mPrivOps.setImeWindowStatus(visibilityFlags, backDisposition);
+        mPrivOps.setImeWindowStatusAsync(visibilityFlags, backDisposition);
     }
 
     /** Set region of the keyboard to be avoided from back gesture */

core/java/com/android/internal/inputmethod/IInputMethodPrivilegedOperations.aidl

@@ -29,7 +29,7 @@ import com.android.internal.inputmethod.IVoidResultCallback;
  * Actual operations are implemented and handled by InputMethodManagerService.
  */
 oneway interface IInputMethodPrivilegedOperations {
-    void setImeWindowStatus(int vis, int backDisposition, in IVoidResultCallback resultCallback);
+    void setImeWindowStatusAsync(int vis, int backDisposition);
     void reportStartInput(in IBinder startInputToken, in IVoidResultCallback resultCallback);
     void createInputContentUriToken(in Uri contentUri, in String packageName,
             in IIInputContentUriTokenResultCallback resultCallback);

core/java/com/android/internal/inputmethod/InputMethodPrivilegedOperations.java

@@ -95,8 +95,7 @@ public final class InputMethodPrivilegedOperations {
     }
 
     /**
-     * Calls {@link IInputMethodPrivilegedOperations#setImeWindowStatus(int, int,
-     * IVoidResultCallback)}.
+     * Calls {@link IInputMethodPrivilegedOperations#setImeWindowStatusAsync(int, int}.
      *
      * @param vis visibility flags
      * @param backDisposition disposition flags
@@ -107,15 +106,13 @@ public final class InputMethodPrivilegedOperations {
      * @see android.inputmethodservice.InputMethodService#BACK_DISPOSITION_ADJUST_NOTHING
      */
     @AnyThread
-    public void setImeWindowStatus(int vis, int backDisposition) {
+    public void setImeWindowStatusAsync(int vis, int backDisposition) {
         final IInputMethodPrivilegedOperations ops = mOps.getAndWarnIfNull();
         if (ops == null) {
             return;
         }
         try {
-            final Completable.Void value = Completable.createVoid();
-            ops.setImeWindowStatus(vis, backDisposition, ResultCallbacks.of(value));
-            Completable.getResult(value);
+            ops.setImeWindowStatusAsync(vis, backDisposition);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }

services/core/java/com/android/server/inputmethod/InputMethodManagerService.java

@@ -5939,10 +5939,8 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
 
         @BinderThread
         @Override
-        public void setImeWindowStatus(int vis, int backDisposition,
-                IVoidResultCallback resultCallback) {
-            CallbackUtils.onResult(resultCallback,
-                    () -> mImms.setImeWindowStatus(mToken, vis, backDisposition));
+        public void setImeWindowStatusAsync(int vis, int backDisposition) {
+            mImms.setImeWindowStatus(mToken, vis, backDisposition);
         }
 
         @BinderThread