| // Copyright 2018 The Feed Authors. |
| // |
| // 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 com.google.android.libraries.feed.internalapi.modelprovider; |
| |
| /** |
| * Defines an interface which observes changes features within the stream model. The {@link |
| * #onChange(FeatureChange)} is called when a feature changes. |
| */ |
| public interface FeatureChangeObserver { |
| /** Called when children of the feature or the underlying payload proto instance change. */ |
| void onChange(FeatureChange change); |
| } |
