1 /*
2  * Copyright (C) 2020 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.notification.collection.inflation;
18 import com.android.systemui.statusbar.notification.collection.NotificationEntry;
19 import com.android.systemui.statusbar.notification.collection.coordinator.PreparationCoordinator;
20 
21 /**
22  * Used by the {@link PreparationCoordinator}.  When notifications are added or updated, the
23  * NotifInflater is asked to (re)inflated and prepare their views.  This inflation occurs off the
24  * main thread. When the inflation is finished, NotifInflater will trigger its InflationCallback.
25  */
26 public interface NotifInflater {
27     /**
28      * Called to rebind the entry's views.
29      *
30      * @param callback callback called after inflation finishes
31      */
rebindViews(NotificationEntry entry, InflationCallback callback)32     void rebindViews(NotificationEntry entry, InflationCallback callback);
33 
34     /**
35      * Called to inflate the views of an entry.  Views are not considered inflated until all of its
36      * views are bound. Once all views are inflated, the InflationCallback is triggered.
37      *
38      * @param callback callback called after inflation finishes
39      */
inflateViews(NotificationEntry entry, InflationCallback callback)40     void inflateViews(NotificationEntry entry, InflationCallback callback);
41 
42     /**
43      * Request to stop the inflation of an entry.  For example, called when a notification is
44      * removed and no longer needs to be inflated.
45      */
abortInflation(NotificationEntry entry)46     void abortInflation(NotificationEntry entry);
47 
48     /**
49      * Callback once all the views are inflated and bound for a given NotificationEntry.
50      */
51     interface InflationCallback {
onInflationFinished(NotificationEntry entry)52         void onInflationFinished(NotificationEntry entry);
53     }
54 }
55