Move ApplicationsState to SettingsLib

/*

 * Copyright (C) 2015 The Android Open Source 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.settingslib.applications;

import android.content.pm.ActivityInfo;

import android.content.res.Configuration;

import android.content.res.Resources;

public class InterestingConfigChanges {

    private final Configuration mLastConfiguration = new Configuration();

    private int mLastDensity;

    public boolean applyNewConfig(Resources res) {

        int configChanges = mLastConfiguration.updateFrom(res.getConfiguration());

        boolean densityChanged = mLastDensity != res.getDisplayMetrics().densityDpi;

        if (densityChanged || (configChanges&(ActivityInfo.CONFIG_LOCALE

                |ActivityInfo.CONFIG_UI_MODE|ActivityInfo.CONFIG_SCREEN_LAYOUT)) != 0) {

            mLastDensity = res.getDisplayMetrics().densityDpi;

            return true;

        }

        return false;

    }

}