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