ConversationCallbackDelegateImpl.java
/*
* Copyright 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 androidx.car.app.messaging.model;
import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import static java.util.Objects.requireNonNull;
import android.os.RemoteException;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
import androidx.car.app.IOnDoneCallback;
import androidx.car.app.OnDoneCallback;
import androidx.car.app.annotations.CarProtocol;
import androidx.car.app.annotations.ExperimentalCarApi;
import androidx.car.app.annotations.KeepFields;
import androidx.car.app.annotations.RequiresCarApi;
import androidx.car.app.utils.RemoteUtils;
/**
* Handles binder transactions related to {@link ConversationCallback}
*
* <p> This class exists because we don't want to expose {@link IConversationCallback} to the A4C
* client.
*
* @hide
*/
@ExperimentalCarApi
@RestrictTo(LIBRARY)
@CarProtocol
@RequiresCarApi(6)
@KeepFields
class ConversationCallbackDelegateImpl implements ConversationCallbackDelegate {
@Nullable
private final IConversationCallback mConversationCallbackBinder;
ConversationCallbackDelegateImpl(@NonNull ConversationCallback conversationCallback) {
mConversationCallbackBinder = new ConversationCallbackStub(conversationCallback);
}
/** Default constructor for serialization. */
private ConversationCallbackDelegateImpl() {
mConversationCallbackBinder = null;
}
@Override
public void sendMarkAsRead(@NonNull OnDoneCallback onDoneCallback) {
try {
requireNonNull(mConversationCallbackBinder)
.onMarkAsRead(RemoteUtils.createOnDoneCallbackStub(onDoneCallback));
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@Override
public void sendTextReply(@NonNull String replyText, @NonNull OnDoneCallback onDoneCallback) {
try {
requireNonNull(mConversationCallbackBinder).onTextReply(
RemoteUtils.createOnDoneCallbackStub(onDoneCallback),
replyText
);
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@KeepFields
private static class ConversationCallbackStub extends IConversationCallback.Stub {
@NonNull
private final ConversationCallback mConversationCallback;
ConversationCallbackStub(@NonNull ConversationCallback conversationCallback) {
mConversationCallback = conversationCallback;
}
@Override
public void onMarkAsRead(@NonNull IOnDoneCallback onDoneCallback) {
RemoteUtils.dispatchCallFromHost(
onDoneCallback,
"onMarkAsRead", () -> {
mConversationCallback.onMarkAsRead();
return null;
}
);
}
@Override
public void onTextReply(
@NonNull IOnDoneCallback onDoneCallback,
@NonNull String replyText
) {
RemoteUtils.dispatchCallFromHost(
onDoneCallback,
"onReply", () -> {
mConversationCallback.onTextReply(replyText);
return null;
}
);
}
}
}