MainThreadExecutor.java
/*
* Copyright 2023 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.wear.protolayout.expression.pipeline;
import android.os.Handler;
import android.os.Looper;
import java.util.concurrent.Executor;
/** Implements an Executor that runs on the main thread. */
class MainThreadExecutor implements Executor {
private final Handler mHandler;
MainThreadExecutor() {
this(new Handler(Looper.getMainLooper()));
}
MainThreadExecutor(Handler handler) {
this.mHandler = handler;
}
@Override
public void execute(Runnable r) {
if (mHandler.getLooper().isCurrentThread()) {
r.run();
} else {
mHandler.post(r);
}
}
}