1 /*
2  * Copyright (C) 2018 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 androidx.constraintlayout.core.widgets;
17 
18 /**
19  * interface to virtual objects
20  */
21 
22 public interface Helper {
23     // @TODO: add description
updateConstraints(ConstraintWidgetContainer container)24     void updateConstraints(ConstraintWidgetContainer container);
25 
26     // @TODO: add description
add(ConstraintWidget widget)27     void add(ConstraintWidget widget);
28 
29     // @TODO: add description
removeAllIds()30     void removeAllIds();
31 }
32