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.view;
18
19import android.view.MenuItem.OnActionExpandListener;
20
21/**
22 * When a {@link View} implements this interface it will receive callbacks
23 * when expanded or collapsed as an action view alongside the optional,
24 * app-specified callbacks to {@link OnActionExpandListener}.
25 *
26 * <p>See {@link MenuItem} for more information about action views.
27 * See {@link android.app.ActionBar} for more information about the action bar.
28 */
29public interface CollapsibleActionView {
30    /**
31     * Called when this view is expanded as an action view.
32     * See {@link MenuItem#expandActionView()}.
33     */
34    public void onActionViewExpanded();
35
36    /**
37     * Called when this view is collapsed as an action view.
38     * See {@link MenuItem#collapseActionView()}.
39     */
40    public void onActionViewCollapsed();
41}
42