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      1 /*
      2  * Copyright (C) 2009 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;
     18 
     19 import android.content.Context;
     20 import android.content.SharedPreferences;
     21 import android.content.res.TypedArray;
     22 import android.util.AttributeSet;
     23 
     24 import com.android.gallery3d.R;
     25 
     26 /**
     27  * The base class of all Preferences used in Camera. The preferences can be
     28  * loaded from XML resource by <code>PreferenceInflater</code>.
     29  */
     30 public abstract class CameraPreference {
     31 
     32     private final String mTitle;
     33     private SharedPreferences mSharedPreferences;
     34     private final Context mContext;
     35 
     36     static public interface OnPreferenceChangedListener {
     37         public void onSharedPreferenceChanged();
     38         public void onRestorePreferencesClicked();
     39         public void onOverriddenPreferencesClicked();
     40         public void onCameraPickerClicked(int cameraId);
     41     }
     42 
     43     public CameraPreference(Context context, AttributeSet attrs) {
     44         mContext = context;
     45         TypedArray a = context.obtainStyledAttributes(
     46                 attrs, R.styleable.CameraPreference, 0, 0);
     47         mTitle = a.getString(R.styleable.CameraPreference_title);
     48         a.recycle();
     49     }
     50 
     51     public String getTitle() {
     52         return mTitle;
     53     }
     54 
     55     public SharedPreferences getSharedPreferences() {
     56         if (mSharedPreferences == null) {
     57             mSharedPreferences = ComboPreferences.get(mContext);
     58         }
     59         return mSharedPreferences;
     60     }
     61 
     62     public abstract void reloadValue();
     63 }
     64