site/node_modules/mathjax-full/ts/a11y/sre.ts

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/*************************************************************
*
* Copyright (c) 2018-2022 The MathJax Consortium
*
* 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.
*/
/**
* @fileoverview Provides the interface functionality to SRE.
*
* @author dpvc@mathjax.org (Davide Cervone)
* @author v.sorge@mathjax.org (Volker Sorge)
*/
import * as Api from 'speech-rule-engine/js/common/system.js';
import {Walker} from 'speech-rule-engine/js/walker/walker.js';
import * as WalkerFactory from 'speech-rule-engine/js/walker/walker_factory.js';
import * as SpeechGeneratorFactory from 'speech-rule-engine/js/speech_generator/speech_generator_factory.js';
import * as EngineConst from 'speech-rule-engine/js/common/engine_const.js';
import Engine from 'speech-rule-engine/js/common/engine.js';
import {ClearspeakPreferences} from 'speech-rule-engine/js/speech_rules/clearspeak_preferences.js';
import {Highlighter} from 'speech-rule-engine/js/highlighter/highlighter.js';
import * as HighlighterFactory from 'speech-rule-engine/js/highlighter/highlighter_factory.js';
import {SpeechGenerator} from 'speech-rule-engine/js/speech_generator/speech_generator.js';
import {Variables} from 'speech-rule-engine/js/common/variables.js';
import MathMaps from './mathmaps.js';
export namespace Sre {
export type highlighter = Highlighter;
export type speechGenerator = SpeechGenerator;
export type walker = Walker;
export const locales = Variables.LOCALES;
export const sreReady = Api.engineReady;
export const setupEngine = Api.setupEngine;
export const engineSetup = Api.engineSetup;
export const toEnriched = Api.toEnriched;
export const toSpeech = Api.toSpeech;
export const clearspeakPreferences = ClearspeakPreferences;
export const getHighlighter = HighlighterFactory.highlighter;
export const getSpeechGenerator = SpeechGeneratorFactory.generator;
export const getWalker = WalkerFactory.walker;
export const clearspeakStyle = () => {
return EngineConst.DOMAIN_TO_STYLES['clearspeak'];
};
/**
* Loads locales that are already included in the imported MathMaps. Defaults
* to standard loading if a locale is not yet preloaded.
*/
export const preloadLocales = async function(locale: string) {
const json = MathMaps.get(locale);
return json ? new Promise((res, _rej) => res(JSON.stringify(json))) :
Api.localeLoader()(locale);
};
}
/**
* A promise that resolves when SRE is loaded and ready, and rejects if
* SRE can't be loaded, or does not become ready within the timout period.
*
* @deprecated
*/
export const sreReady = Sre.sreReady;
// Setting delay stops SRE from setting itself up (and loading locales) when it
// is not actually being used. As we are not yet sure in which environment we
// are (browser, node) we can not use a configuration vector.
Engine.getInstance().delay = true;
export default Sre;