regis@google.com
adb534674c
Review URL: https://codereview.chromium.org//11090016 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@13684 260f80e4-7a28-3924-810f-c04153c831b5
70 lines
3.3 KiB
Dart
70 lines
3.3 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/**
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* This provides a basic example of internationalization usage. It uses the
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* local variant of all the facilities, meaning that libraries with the
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* data for all the locales are directly imported by the program. More realistic
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* examples might read the data from files or over the web, which uses the
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* same APIs but requires different imports.
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*
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* This defines messages for an English locale directly in the program and
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* has separate libraries that define German and Thai messages that say more or
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* less the same thing, and prints the message with the date and time in it
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* formatted appropriately for the locale.
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*/
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#library('intl_basic_example');
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// These can be replaced with package:intl/... references if using this in
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// a separate package.
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// TODO(alanknight): Replace these with package: once pub works in buildbots.
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#import('../../lib/date_symbol_data_local.dart');
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#import('../../lib/intl.dart');
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#import('../../lib/message_lookup_local.dart');
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#import('messages_all.dart');
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Function doThisWithTheOutput;
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void setup(Function program, Function output) {
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// Before we use any messages or use date formatting for a locale we must
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// call their initializtion messages, which are asynchronous, since they
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// might be reading information from files or over the web. Since we are
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// running here in local mode they will all complete immediately.
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doThisWithTheOutput = output;
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var germanDatesFuture = initializeDateFormatting('de_DE', null);
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var thaiDatesFuture = initializeDateFormatting('th_TH', null);
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var germanMessagesFuture = initializeMessages('de_DE');
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var thaiMessagesFuture = initializeMessages('th_TH');
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Futures.wait([germanDatesFuture, thaiDatesFuture, germanMessagesFuture,
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thaiMessagesFuture]).then(program);
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}
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// Because the initialization messages return futures we split out the main
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// part of our program into a separate function that runs once all the
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// futures have completed. We are passed the collection of futures, but we
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// don't need to use them, so ignore the parameter.
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runProgram(List<Future> _) {
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var aDate = new Date.fromMillisecondsSinceEpoch(0, isUtc: true);
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var de = new Intl('de_DE');
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var th = new Intl('th_TH');
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// This defines a message that can be internationalized. It is written as a
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// function that returns the result of an Intl.message call. The primary
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// parameter is a string that may use interpolation.
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runAt(time, date) =>
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Intl.message('Ran at $time on $date', name: 'runAt', args: [time, date]);
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printForLocale(aDate, new Intl(), runAt);
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printForLocale(aDate, de, runAt);
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printForLocale(aDate, th, runAt);
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// Example making use of the return value from withLocale;
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var useReturnValue = Intl.withLocale(th.locale, () => runAt('now', 'today'));
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doThisWithTheOutput(useReturnValue);
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}
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printForLocale(aDate, intl, operation) {
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var hmsFormat = intl.date().add_Hms();
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var dayFormat = intl.date().add_yMMMMEEEEd();
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var time = hmsFormat.format(aDate);
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var day = dayFormat.format(aDate);
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Intl.withLocale(intl.locale, () { doThisWithTheOutput(operation(time,day));});
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} |