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.dialer.app;
18 
19 import android.content.Context;
20 import com.android.dialer.app.legacybindings.DialerLegacyBindings;
21 import com.android.dialer.app.legacybindings.DialerLegacyBindingsFactory;
22 import com.android.dialer.app.legacybindings.DialerLegacyBindingsStub;
23 import java.util.Objects;
24 
25 /** Accessor for the in call UI bindings. */
26 public class Bindings {
27 
28   private static DialerLegacyBindings legacyInstance;
29 
Bindings()30   private Bindings() {}
31 
getLegacy(Context context)32   public static DialerLegacyBindings getLegacy(Context context) {
33     Objects.requireNonNull(context);
34     if (legacyInstance != null) {
35       return legacyInstance;
36     }
37 
38     Context application = context.getApplicationContext();
39     if (application instanceof DialerLegacyBindingsFactory) {
40       legacyInstance = ((DialerLegacyBindingsFactory) application).newDialerLegacyBindings();
41     }
42 
43     if (legacyInstance == null) {
44       legacyInstance = new DialerLegacyBindingsStub();
45     }
46     return legacyInstance;
47   }
48 
49 }
50