Github user daserge commented on a diff in the pull request:
https://github.com/apache/cordova-plugin-globalization/pull/31#discussion_r21478290
--- Diff: src/windows/GlobalizationProxy.js ---
@@ -0,0 +1,294 @@
+/*
+ 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.
+*/
+
+var GlobalizationError = require('./GlobalizationError');
+var locale = navigator.userLanguage;
+
+var decimalFormatter;
+var currencyFormatter;
+var percentFormatter;
+
+function createRoundingAlgorithm() {
+ // This is undefined in case of Windows 8.0
+ if (Windows.Globalization.NumberFormatting.IncrementNumberRounder) {
+ var rounder = new
Windows.Globalization.NumberFormatting.IncrementNumberRounder();
+ rounder.roundingAlgorithm =
Windows.Globalization.NumberFormatting.RoundingAlgorithm.roundHalfUp;
+ rounder.increment = 0.01;
+
+ return rounder;
+ }
+
+ return null;
+}
+
+function createDecimalFormatter(regionName) {
+ decimalFormatter = new
Windows.Globalization.NumberFormatting.DecimalFormatter([locale], regionName);
+
+ decimalFormatter.numberRounder = createRoundingAlgorithm();
+ decimalFormatter.isGrouped = false;
+
+ return decimalFormatter;
+}
+
+function getDecimalFormatter(regionName) {
+ return decimalFormatter || createDecimalFormatter(regionName);
+}
+
+function createCurrencyFormatter(regionName) {
+ var regionObj = new Windows.Globalization.GeographicRegion(regionName);
+ var currency = regionObj.currenciesInUse[0];
+
+ currencyFormatter = new
Windows.Globalization.NumberFormatting.CurrencyFormatter(currency, [locale],
regionName);
+
+ currencyFormatter.numberRounder = createRoundingAlgorithm();
+ currencyFormatter.isGrouped = true;
+
+ return currencyFormatter;
+}
+
+function getCurrencyFormatter(regionName) {
+ return currencyFormatter || createCurrencyFormatter(regionName);
+}
+
+function createPercentFormatter(regionName) {
+ percentFormatter = new
Windows.Globalization.NumberFormatting.PercentFormatter([locale], regionName);
+
+ percentFormatter.numberRounder = createRoundingAlgorithm();
+ percentFormatter.fractionDigits = 0;
+ percentFormatter.isGrouped = false;
+
+ return percentFormatter;
+}
+
+function getPercentFormatter(regionName) {
+ return percentFormatter || createPercentFormatter(regionName);
+}
+
+function getNumberFormatter(options) {
+ options = options || { type: 'decimal' };
+ options.type = options.type || 'decimal';
+
+ var tags = locale.split('-');
+ var regionName = tags[tags.length - 1];
+
+ switch (options.type) {
+ case 'decimal':
+ {
+ return getDecimalFormatter(regionName);
+ }
+ case 'currency':
+ {
+ return getCurrencyFormatter(regionName);
+ }
+ case 'percent':
+ {
+ return getPercentFormatter(regionName);
+ }
+ default:
+ throw "The options.type can be 'decimal', 'percent', or
'currency' only";
+ };
+}
+
+module.exports = {
+ getPreferredLanguage: function (win, fail) {
+ try {
+ var language =
Windows.System.UserProfile.GlobalizationPreferences.languages[0];
+
+ win({ value: language });
+ } catch (e) {
+ fail(e);
+ }
+ },
+
+ getLocaleName: function (win, fail) {
+ // Corresponds to a user-selected regional format
+ win({ value: locale });
+ },
+
+ dateToString: function (win, fail, args) {
+ tryDoAction(GlobalizationProxy.GlobalizationProxy.dateToString,
+ JSON.stringify({
+ date: args[0].date,
+ options: args[0].options || { formatLength: "short",
selector: "date and time" }
+ }), win, fail);
+ },
+
+ stringToDate: function (win, fail, args) {
+ tryDoAction(GlobalizationProxy.GlobalizationProxy.stringToDate,
+ JSON.stringify({
+ dateString: args[0].dateString,
+ options: args[0].options || { formatLength: "short",
selector: "date and time" }
+ }), win, fail);
+ },
+
+ getDateNames: function (win, fail, args) {
+ try {
+ var options = args[0].options || { type: 'wide', item:
'months' };
+ var type = options.type || 'wide';
+ var item = options.item || 'months';
+
+ var monthFormat =
Windows.Globalization.DateTimeFormatting.MonthFormat.none;
+ var dayOfWeekFormat =
Windows.Globalization.DateTimeFormatting.DayOfWeekFormat.none;
+
+ if (item === 'months' && type === 'wide') {
+ monthFormat =
Windows.Globalization.DateTimeFormatting.MonthFormat.full;
+ } else if (item === 'months' && type === 'narrow') {
+ monthFormat =
Windows.Globalization.DateTimeFormatting.MonthFormat.abbreviated;
+ } else if (item === 'days' && type === 'wide') {
+ dayOfWeekFormat =
Windows.Globalization.DateTimeFormatting.DayOfWeekFormat.full;
+ } else if (item === 'days' && type === 'narrow') {
+ dayOfWeekFormat =
Windows.Globalization.DateTimeFormatting.DayOfWeekFormat.abbreviated;
+ } else {
+ throw "Incorrect item type";
+ }
+
+ var formatter = new
Windows.Globalization.DateTimeFormatting.DateTimeFormatter(
+ Windows.Globalization.DateTimeFormatting.YearFormat.none,
+ monthFormat,
+ Windows.Globalization.DateTimeFormatting.DayFormat.none,
+ dayOfWeekFormat,
+ Windows.Globalization.DateTimeFormatting.HourFormat.none,
+
Windows.Globalization.DateTimeFormatting.MinuteFormat.none,
+
Windows.Globalization.DateTimeFormatting.SecondFormat.none,
+ [locale]);
+
+ var result = [];
+ if (item === 'months') {
+ for (var i = 0; i < 12; i++) {
+ var date = new Date(2014, i, 20, 0, 0, 0, 0);
+ result[i] = formatter.format(date);
+ }
+ } else {
+ for (i = 0; i < 7; i++) {
+ date = new Date(2014, 5, i + 1, 0, 0, 0, 0);
--- End diff --
As Jesse correctly stated:
> It looks like it's just to generate names of days, using a known
month/year which starts on a Sunday by the looks of it.
We are taking 2014 June 1st and a week forward starting with Sunday to
generate the weekdays.
The day week starts on actually can be different and it is defined in
getFirstDayOfWeek method.
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