1 /*
2  * Copyright (C) 2019 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 package com.android.customization.model.clock;
17 
18 import com.android.customization.model.CustomizationManager.OptionsFetchedListener;
19 
20 /**
21  * Interface for a class that can retrieve Themes from the system.
22  */
23 public interface ClockProvider {
24     /**
25      * Returns whether clockfaces are available in the current setup.
26      */
isAvailable()27     boolean isAvailable();
28 
29     /**
30      * Retrieve the available clockfaces.
31      * @param callback called when the clockfaces have been retrieved (or immediately if cached)
32      * @param reload whether to reload clockfaces if they're cached.
33      */
fetch(OptionsFetchedListener<Clockface> callback, boolean reload)34     void fetch(OptionsFetchedListener<Clockface> callback, boolean reload);
35 }
36