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.camera.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 {
onSharedPreferenceChanged()37         public void onSharedPreferenceChanged();
onRestorePreferencesClicked()38         public void onRestorePreferencesClicked();
onOverriddenPreferencesClicked()39         public void onOverriddenPreferencesClicked();
40     }
41 
CameraPreference(Context context, AttributeSet attrs)42     public CameraPreference(Context context, AttributeSet attrs) {
43         mContext = context;
44         TypedArray a = context.obtainStyledAttributes(
45                 attrs, R.styleable.CameraPreference, 0, 0);
46         mTitle = a.getString(R.styleable.CameraPreference_title);
47         a.recycle();
48     }
49 
getTitle()50     public String getTitle() {
51         return mTitle;
52     }
53 
getSharedPreferences()54     public SharedPreferences getSharedPreferences() {
55         if (mSharedPreferences == null) {
56             mSharedPreferences = ComboPreferences.get(mContext);
57         }
58         return mSharedPreferences;
59     }
60 
reloadValue()61     public abstract void reloadValue();
62 }
63