1 /*
2  * Copyright (C) 2016 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 com.android.systemui.statusbar.policy;
18 
19 import com.android.systemui.statusbar.notification.collection.NotificationEntry;
20 
21 /**
22  * A listener to heads up changes
23  */
24 public interface OnHeadsUpChangedListener {
25     /**
26      * The state whether there exist pinned heads-ups or not changed.
27      *
28      * @param inPinnedMode whether there are any pinned heads-ups
29      */
onHeadsUpPinnedModeChanged(boolean inPinnedMode)30     default void onHeadsUpPinnedModeChanged(boolean inPinnedMode) {}
31 
32     /**
33      * A notification was just pinned to the top.
34      */
onHeadsUpPinned(NotificationEntry entry)35     default void onHeadsUpPinned(NotificationEntry entry) {}
36 
37     /**
38      * A notification was just unpinned from the top.
39      */
onHeadsUpUnPinned(NotificationEntry entry)40     default void onHeadsUpUnPinned(NotificationEntry entry) {}
41 
42     /**
43      * A notification just became a heads up or turned back to its normal state.
44      *
45      * @param entry     the entry of the changed notification
46      * @param isHeadsUp whether the notification is now a headsUp notification
47      */
onHeadsUpStateChanged(NotificationEntry entry, boolean isHeadsUp)48     default void onHeadsUpStateChanged(NotificationEntry entry, boolean isHeadsUp) {}
49 }
50