DurationNodes.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 androidx.annotation.UiThread;
import androidx.wear.protolayout.expression.proto.FixedProto.FixedDuration;
import java.time.Duration;
import java.time.Instant;
/** Dynamic data nodes which yield durations. */
class DurationNodes {
private DurationNodes() {}
/** Dynamic duration node that has a fixed value. */
static class FixedDurationNode implements DynamicDataSourceNode<Duration> {
private final Duration mValue;
private final DynamicTypeValueReceiverWithPreUpdate<Duration> mDownstream;
FixedDurationNode(
FixedDuration protoNode,
DynamicTypeValueReceiverWithPreUpdate<Duration> downstream) {
this.mValue = Duration.ofSeconds(protoNode.getSeconds());
this.mDownstream = downstream;
}
@Override
@UiThread
public void preInit() {
mDownstream.onPreUpdate();
}
@Override
@UiThread
public void init() {
mDownstream.onData(mValue);
}
@Override
public void destroy() {}
}
/** Dynamic duration node that gets the duration between two time instants. */
static class BetweenInstancesNode
extends DynamicDataBiTransformNode<Instant, Instant, Duration> {
BetweenInstancesNode(DynamicTypeValueReceiverWithPreUpdate<Duration> downstream) {
super(downstream, Duration::between);
}
}
}