Introduce SystemSettingsCheckBoxPreference

/*

 * Copyright (C) 2013 The CyanogenMod project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.settings.cyanogenmod;

import android.content.Context;

import android.preference.CheckBoxPreference;

import android.provider.Settings;

import android.util.AttributeSet;

public class SystemSettingCheckBoxPreference extends CheckBoxPreference {

    public SystemSettingCheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

    }

    public SystemSettingCheckBoxPreference(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    public SystemSettingCheckBoxPreference(Context context) {

        super(context, null);

    }

    @Override

    protected boolean persistBoolean(boolean value) {

        if (shouldPersist()) {

            if (value == getPersistedBoolean(!value)) {

                // It's already there, so the same as persisting

                return true;

            }

            Settings.System.putInt(getContext().getContentResolver(), getKey(), value ? 1 : 0);

            return true;

        }

        return false;

    }

    @Override

    protected boolean getPersistedBoolean(boolean defaultReturnValue) {

        if (!shouldPersist()) {

            return defaultReturnValue;

        }

        return Settings.System.getInt(getContext().getContentResolver(),

                getKey(), defaultReturnValue ? 1 : 0) != 0;

    }

    @Override

    protected boolean isPersisted() {

        // Using getString instead of getInt so we can simply check for null

        // instead of catching an exception. (All values are stored as strings.)

        return Settings.System.getString(getContext().getContentResolver(), getKey()) != null;

    }

}