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 
17 package android.view;
18 
19 import 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  */
29 public interface CollapsibleActionView {
30     /**
31      * Called when this view is expanded as an action view.
32      * See {@link MenuItem#expandActionView()}.
33      */
onActionViewExpanded()34     public void onActionViewExpanded();
35 
36     /**
37      * Called when this view is collapsed as an action view.
38      * See {@link MenuItem#collapseActionView()}.
39      */
onActionViewCollapsed()40     public void onActionViewCollapsed();
41 }
42