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/*
* 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);
}
}
}
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