1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.systemui.plugins;
16 
17 import android.content.Context;
18 
19 /**
20  * Interface for listening to plugins being connected.
21  */
22 public interface PluginListener<T extends Plugin> {
23     /**
24      * Called when the plugin has been loaded and is ready to be used.
25      * This may be called multiple times if multiple plugins are allowed.
26      * It may also be called in the future if the plugin package changes
27      * and needs to be reloaded.
28      */
onPluginConnected(T plugin, Context pluginContext)29     void onPluginConnected(T plugin, Context pluginContext);
30 
31     /**
32      * Called when a plugin has been uninstalled/updated and should be removed
33      * from use.
34      */
onPluginDisconnected(T plugin)35     default void onPluginDisconnected(T plugin) {
36         // Optional.
37     }
38 }
39