1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v7.view;
18
19/**
20 * When a {@link android.view.View} implements this interface it will receive callbacks when expanded or
21 * collapsed as an action view alongside the optional, app-specified callbacks to {@link
22 * android.support.v4.view.MenuItemCompat.OnActionExpandListener}.
23 *
24 * <p>See {@link android.support.v4.view.MenuItemCompat} for more information about action views.
25 * See {@link android.app.ActionBar} for more information about the action bar.
26 */
27public interface CollapsibleActionView {
28
29    /**
30     * Called when this view is expanded as an action view. See
31     * {@link android.view.MenuItem#expandActionView()}.
32     */
33    void onActionViewExpanded();
34
35    /**
36     * Called when this view is collapsed as an action view. See
37     * {@link android.view.MenuItem#collapseActionView()}.
38     */
39    void onActionViewCollapsed();
40}
41