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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 
     17 package com.android.camera.one;
     18 
     19 import com.android.camera.async.ForwardingObservable;
     20 import com.android.camera.async.Observable;
     21 import com.android.camera.async.Observables;
     22 import com.google.common.base.Function;
     23 
     24 /**
     25  * Translates from the Flash Mode setting (stored as a string) to the
     26  * appropriate {@link OneCamera.PhotoCaptureParameters.Flash} value.
     27  */
     28 public class FlashSetting extends ForwardingObservable<OneCamera.PhotoCaptureParameters.Flash> {
     29     private static class FlashStringToEnum implements
     30             Function<String, OneCamera.PhotoCaptureParameters.Flash> {
     31         @Override
     32         public OneCamera.PhotoCaptureParameters.Flash apply(String settingString) {
     33             return OneCamera.PhotoCaptureParameters.Flash.decodeSettingsString(settingString);
     34         }
     35     }
     36 
     37     public FlashSetting(Observable<String> flashSettingString) {
     38         super(Observables.transform(flashSettingString, new FlashStringToEnum()));
     39     }
     40 }
     41