1 /*
2  * Copyright 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 
17 package androidx.constraintlayout.core.state;
18 
19 import androidx.constraintlayout.core.state.helpers.Facade;
20 import androidx.constraintlayout.core.widgets.ConstraintWidget;
21 
22 public interface Reference {
23     // @TODO: add description
getConstraintWidget()24     ConstraintWidget getConstraintWidget();
25 
26     // @TODO: add description
setConstraintWidget(ConstraintWidget widget)27     void setConstraintWidget(ConstraintWidget widget);
28 
29     // @TODO: add description
setKey(Object key)30     void setKey(Object key);
31 
32     // @TODO: add description
getKey()33     Object getKey();
34 
35     // @TODO: add description
apply()36     void apply();
37 
38     // @TODO: add description
getFacade()39     Facade getFacade();
40 }
41