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      1 /*
      2  * Copyright (C) 2014 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 android.databinding;
     17 
     18 import android.databinding.Observable.OnPropertyChangedCallback;
     19 
     20 import java.lang.annotation.ElementType;
     21 import java.lang.annotation.Retention;
     22 import java.lang.annotation.RetentionPolicy;
     23 import java.lang.annotation.Target;
     24 
     25 /**
     26  * The Bindable annotation should be applied to any getter accessor method of an
     27  * {@link Observable} class. Bindable will generate a field in the BR class to identify
     28  * the field that has changed.
     29  *
     30  * @see OnPropertyChangedCallback#onPropertyChanged(Observable, int)
     31  */
     32 @Target({ElementType.FIELD, ElementType.METHOD})
     33 @Retention(RetentionPolicy.RUNTIME) // this is necessary for java analyzer to work
     34 public @interface Bindable {
     35 }
     36