1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14package android.support.v17.leanback.widget; 15 16import android.view.View; 17import android.view.ViewGroup; 18 19/** 20 * Interface definition for a callback to be invoked when a child of this 21 * viewgroup has been selected. 22 */ 23public interface OnChildSelectedListener { 24 /** 25 * Callback method to be invoked when a child of this viewgroup has been 26 * selected. 27 * 28 * <p>This method may be called during layout, so implementations of this 29 * interface need to be careful not to ... (todo). 30 * 31 * @param parent The ViewGroup where the selection happened. 32 * @param view The view within the ViewGroup that is selected, or null if no 33 * view is selected. 34 * @param position The position of the view in the adapter, or NO_POSITION 35 * if no view is selected. 36 * @param id The id of the child that is selected, or NO_ID if no view is 37 * selected. 38 */ 39 void onChildSelected(ViewGroup parent, View view, int position, long id); 40} 41