OnClickDelegateImpl.java
/*
* Copyright 2020 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.model;
import static androidx.annotation.RestrictTo.Scope.LIBRARY;
import static java.util.Objects.requireNonNull;
import android.annotation.SuppressLint;
import android.os.RemoteException;
import androidx.annotation.Keep;
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.utils.RemoteUtils;
/**
* Implementation class for {@link OnClickDelegate} to allow IPC for click-related events.
*
* @hide
*/
@RestrictTo(LIBRARY)
@CarProtocol
public class OnClickDelegateImpl implements OnClickDelegate {
@Keep
private final boolean mIsParkedOnly;
@Keep
@Nullable
private final IOnClickListener mListener;
/**
* Whether the click listener is for parked-only scenarios.
*/
@Override
public boolean isParkedOnly() {
return mIsParkedOnly;
}
@Override
public void sendClick(@NonNull OnDoneCallback callback) {
try {
requireNonNull(mListener).onClick(RemoteUtils.createOnDoneCallbackStub(callback));
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@NonNull
// This listener relates to UI event and is expected to be triggered on the main thread.
@SuppressLint("ExecutorRegistration")
static OnClickDelegate create(@NonNull OnClickListener listener) {
return new OnClickDelegateImpl(
listener,
listener instanceof ParkedOnlyOnClickListener);
}
private OnClickDelegateImpl(@NonNull OnClickListener listener,
boolean isParkedOnly) {
mListener = new OnClickListenerStub(listener);
mIsParkedOnly = isParkedOnly;
}
/** For serialization. */
private OnClickDelegateImpl() {
mListener = null;
mIsParkedOnly = false;
}
@Keep // We need to keep these stub for Bundler serialization logic.
private static class OnClickListenerStub extends IOnClickListener.Stub {
private final OnClickListener mOnClickListener;
OnClickListenerStub(OnClickListener onClickListener) {
mOnClickListener = onClickListener;
}
@Override
public void onClick(IOnDoneCallback callback) {
RemoteUtils.dispatchCallFromHost(callback, "onClick", () -> {
mOnClickListener.onClick();
return null;
});
}
}
}