1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5 * except in compliance with the License. You may obtain a copy of the License at
6 *
7 *      http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the
10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11 * KIND, either express or implied. See the License for the specific language governing
12 * permissions and limitations under the License.
13 */
14package com.android.settings.applications;
15
16import android.content.Context;
17import android.support.v7.preference.Preference;
18import com.android.settings.R;
19import com.android.settings.core.PreferenceControllerMixin;
20import com.android.settings.datausage.DataSaverBackend;
21import com.android.settingslib.core.AbstractPreferenceController;
22
23public class SpecialAppAccessPreferenceController extends AbstractPreferenceController
24        implements PreferenceControllerMixin {
25
26    private static final String KEY_SPECIAL_ACCESS = "special_access";
27
28    private DataSaverBackend mDataSaverBackend;
29
30    public SpecialAppAccessPreferenceController(Context context) {
31        super(context);
32    }
33
34    @Override
35    public boolean isAvailable() {
36        return true;
37    }
38
39    @Override
40    public String getPreferenceKey() {
41        return KEY_SPECIAL_ACCESS;
42    }
43
44    @Override
45    public void updateState(Preference preference) {
46        if (mDataSaverBackend == null) {
47            mDataSaverBackend = new DataSaverBackend(mContext);
48        }
49        final int count = mDataSaverBackend.getWhitelistedCount();
50        preference.setSummary(mContext.getResources().getQuantityString(
51            R.plurals.special_access_summary, count, count));
52    }
53}
54