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// Copyright 2012 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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//      http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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 * @fileoverview Object which fetches Unicode codepoint names that are locally
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 * stored in a bundled database. Currently, only invisible characters are
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 * covered by this database. See the goog.i18n.uChar.RemoteNameFetcher class for
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 * a remote database option.
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 */
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goog.provide('goog.i18n.uChar.LocalNameFetcher');
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goog.require('goog.i18n.uChar.NameFetcher');
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goog.require('goog.i18n.uCharNames');
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goog.require('goog.log');
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/**
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 * Builds the NameFetcherLocal object. This is a simple object which retrieves
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 * character names from a local bundled database. This database only covers
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 * invisible characters. See the goog.i18n.uChar class for more details.
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 *
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 * @constructor
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 * @implements {goog.i18n.uChar.NameFetcher}
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 * @final
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 */
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goog.i18n.uChar.LocalNameFetcher = function() {};
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/**
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 * A reference to the LocalNameFetcher logger.
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 *
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 * @type {goog.log.Logger}
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 * @private
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 */
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goog.i18n.uChar.LocalNameFetcher.logger_ =
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    goog.log.getLogger('goog.i18n.uChar.LocalNameFetcher');
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/** @override */
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goog.i18n.uChar.LocalNameFetcher.prototype.prefetch = function(character) {};
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/** @override */
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goog.i18n.uChar.LocalNameFetcher.prototype.getName = function(
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    character, callback) {
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  var localName = goog.i18n.uCharNames.toName(character);
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  if (!localName) {
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    goog.i18n.uChar.LocalNameFetcher.logger_.warning(
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        'No local name defined for character ' + character);
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  }
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  callback(localName);
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};
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/** @override */
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goog.i18n.uChar.LocalNameFetcher.prototype.isNameAvailable = function(
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    character) {
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  return !!goog.i18n.uCharNames.toName(character);
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};
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