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      1 /*
      2  * Copyright (C) 2007 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 android.widget;
     18 
     19 /**
     20  * Defines an extension for views that make them checkable.
     21  *
     22  */
     23 public interface Checkable {
     24 
     25     /**
     26      * Change the checked state of the view
     27      *
     28      * @param checked The new checked state
     29      */
     30     void setChecked(boolean checked);
     31 
     32     /**
     33      * @return The current checked state of the view
     34      */
     35     boolean isChecked();
     36 
     37     /**
     38      * Change the checked state of the view to the inverse of its current state
     39      *
     40      */
     41     void toggle();
     42 }
     43