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Apache License
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package im.delight.android.ddp.firebase; /*from w ww . jav a 2 s .c om*/ /** * Copyright 2014 www.delight.im <info@delight.im> * * 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. */ import java.lang.String; /** Implementations of this interface can be used to receive notifications about data changes in any child location */ public interface ChildEventListener extends EventListener { /** * Method that will be triggered when a new child is added * * @param snapshot the new data snapshot for the child location * @param previousChildName the sibling that is located before the new child or `null` */ public void onChildAdded(DataSnapshot snapshot, String previousChildName); /** * Method that will be triggered when a child has changed * * @param snapshot the new data snapshot for the child location * @param previousChildName the sibling that is located before the new child or `null` */ public void onChildChanged(DataSnapshot snapshot, String previousChildName); /** * Method that will be triggered when a child has been removed * * @param snapshot the old data snapshot for the child location */ public void onChildRemoved(DataSnapshot snapshot); /** * Method that will be triggered when a child has been moved due to an updated priority value * * @param snapshot the data snapshot for the child location * @param previousChildName the sibling that is located before the new child or `null` */ public void onChildMoved(DataSnapshot snapshot, String previousChildName); /** * Method that will be triggered in case of an error with this listener * * @param error the error that occurred */ public void onCancelled(FirebaseError error); }