Merge "Removing reflection from AlphabeticIndexCompat" into ub-launcher3-calgary-polish

package com.android.launcher3.compat;

import android.annotation.TargetApi;

import android.content.Context;

import android.content.res.Configuration;

import android.icu.text.AlphabeticIndex;

import android.os.Build;

import android.os.LocaleList;

import android.util.Log;

import com.android.launcher3.Utilities;

import java.lang.reflect.Constructor;

import java.lang.reflect.Method;

import java.util.Locale;

    }

    /**

     * Reflected android.icu.text.AlphabeticIndex implementation, falls back to the base

     * alphabetic index.

     * Implementation based on {@link AlphabeticIndex}.

     */

    @TargetApi(Build.VERSION_CODES.N)

    private static class AlphabeticIndexVN extends BaseIndex {

        private Object mAlphabeticIndex;

        private Method mGetBucketIndexMethod;

        private Method mGetBucketMethod;

        private Method mGetLabelMethod;

        public AlphabeticIndexVN(Context context) throws Exception {

            // TODO: Replace this with locale list once available.

            Object locales = Configuration.class.getDeclaredMethod("getLocales").invoke(

                    context.getResources().getConfiguration());

            int localeCount = (Integer) locales.getClass().getDeclaredMethod("size").invoke(locales);

            Method localeGetter = locales.getClass().getDeclaredMethod("get", int.class);

            Locale primaryLocale = localeCount == 0 ? Locale.ENGLISH :

                    (Locale) localeGetter.invoke(locales, 0);

        private final AlphabeticIndex.ImmutableIndex mAlphabeticIndex;

            Class clazz = Class.forName("android.icu.text.AlphabeticIndex");

            mAlphabeticIndex = clazz.getConstructor(Locale.class).newInstance(primaryLocale);

        public AlphabeticIndexVN(Context context) {

            LocaleList locales = context.getResources().getConfiguration().getLocales();

            int localeCount = locales.size();

            Method addLocales = clazz.getDeclaredMethod("addLabels", Locale[].class);

            Locale primaryLocale = localeCount == 0 ? Locale.ENGLISH : locales.get(0);

            AlphabeticIndex indexBuilder = new AlphabeticIndex(primaryLocale);

            for (int i = 1; i < localeCount; i++) {

                Locale l = (Locale) localeGetter.invoke(locales, i);

                addLocales.invoke(mAlphabeticIndex, new Object[]{ new Locale[] {l}});

                indexBuilder.addLabels(locales.get(i));

            }

            addLocales.invoke(mAlphabeticIndex, new Object[]{ new Locale[] {Locale.ENGLISH}});

            indexBuilder.addLabels(Locale.ENGLISH);

            mAlphabeticIndex = mAlphabeticIndex.getClass()

                    .getDeclaredMethod("buildImmutableIndex")

                    .invoke(mAlphabeticIndex);

            mGetBucketIndexMethod = mAlphabeticIndex.getClass().getDeclaredMethod(

                    "getBucketIndex", CharSequence.class);

            mGetBucketMethod = mAlphabeticIndex.getClass().getDeclaredMethod("getBucket", int.class);

            mGetLabelMethod = mGetBucketMethod.getReturnType().getDeclaredMethod("getLabel");

            mAlphabeticIndex = indexBuilder.buildImmutableIndex();

        }

        /**

         * Returns the index of the bucket in which {@param s} should appear.

         */

        protected int getBucketIndex(String s) {

            try {

                return (Integer) mGetBucketIndexMethod.invoke(mAlphabeticIndex, s);

            } catch (Exception e) {

                e.printStackTrace();

            }

            return super.getBucketIndex(s);

            return mAlphabeticIndex.getBucketIndex(s);

        }

        /**

         * Returns the label for the bucket at the given index

         */

        protected String getBucketLabel(int index) {

            try {

                return (String) mGetLabelMethod.invoke(

                        mGetBucketMethod.invoke(mAlphabeticIndex, index));

            } catch (Exception e) {

                e.printStackTrace();

            }

            return super.getBucketLabel(index);

            return mAlphabeticIndex.getBucket(index).getLabel();

        }

    }

}