1 files changed, 116 insertions, 0 deletions
diff --git a/core/java/android/accessibilityservice/AccessibilityInputMethodSessionWrapper.java b/core/java/android/accessibilityservice/AccessibilityInputMethodSessionWrapper.java
new file mode 100644
index 000000000000..3252ab23486f
--- /dev/null
+++ b/core/java/android/accessibilityservice/AccessibilityInputMethodSessionWrapper.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2022 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 android.accessibilityservice;
+
+import android.annotation.AnyThread;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Handler;
+import android.os.Looper;
+import android.view.inputmethod.EditorInfo;
+
+import com.android.internal.inputmethod.IAccessibilityInputMethodSession;
+import com.android.internal.inputmethod.IRemoteAccessibilityInputConnection;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+final class AccessibilityInputMethodSessionWrapper extends IAccessibilityInputMethodSession.Stub {
+    private final Handler mHandler;
+
+    @NonNull
+    private final AtomicReference<AccessibilityInputMethodSession> mSessionRef;
+
+    AccessibilityInputMethodSessionWrapper(
+            @NonNull Looper looper, @NonNull AccessibilityInputMethodSession session) {
+        mSessionRef = new AtomicReference<>(session);
+        mHandler = Handler.createAsync(looper);
+    }
+
+    @AnyThread
+    @Nullable
+    AccessibilityInputMethodSession getSession() {
+        return mSessionRef.get();
+    }
+
+    @Override
+    public void updateSelection(int oldSelStart, int oldSelEnd,
+            int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) {
+        if (mHandler.getLooper().isCurrentThread()) {
+            doUpdateSelection(oldSelStart, oldSelEnd, newSelStart, newSelEnd, candidatesStart,
+                    candidatesEnd);
+        } else {
+            mHandler.post(() -> doUpdateSelection(oldSelStart, oldSelEnd, newSelStart,
+                    newSelEnd, candidatesStart, candidatesEnd));
+        }
+    }
+
+    private void doUpdateSelection(int oldSelStart, int oldSelEnd,
+            int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) {
+        final AccessibilityInputMethodSession session = mSessionRef.get();
+        if (session != null) {
+            session.updateSelection(oldSelStart, oldSelEnd, newSelStart, newSelEnd, candidatesStart,
+                    candidatesEnd);
+        }
+    }
+
+    @Override
+    public void finishInput() {
+        if (mHandler.getLooper().isCurrentThread()) {
+            doFinishInput();
+        } else {
+            mHandler.post(this::doFinishInput);
+        }
+    }
+
+    private void doFinishInput() {
+        final AccessibilityInputMethodSession session = mSessionRef.get();
+        if (session != null) {
+            session.finishInput();
+        }
+    }
+
+    @Override
+    public void finishSession() {
+        if (mHandler.getLooper().isCurrentThread()) {
+            doFinishSession();
+        } else {
+            mHandler.post(this::doFinishSession);
+        }
+    }
+
+    private void doFinishSession() {
+        mSessionRef.set(null);
+    }
+
+    @Override
+    public void invalidateInput(EditorInfo editorInfo,
+            IRemoteAccessibilityInputConnection connection, int sessionId) {
+        if (mHandler.getLooper().isCurrentThread()) {
+            doInvalidateInput(editorInfo, connection, sessionId);
+        } else {
+            mHandler.post(() -> doInvalidateInput(editorInfo, connection, sessionId));
+        }
+    }
+
+    private void doInvalidateInput(EditorInfo editorInfo,
+            IRemoteAccessibilityInputConnection connection, int sessionId) {
+        final AccessibilityInputMethodSession session = mSessionRef.get();
+        if (session != null) {
+            session.invalidateInput(editorInfo, connection, sessionId);
+        }
+    }
+}