1f9533bae9
This is consistent with the implementation used in the (now removed) webL10n-library, and by only using lowercase language-codes internally in the `L10n`-implementations we should avoid future issues e.g. when users manually set the `locale`-option (in the default viewer).
88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
/* Copyright 2021 Mozilla Foundation
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/** @typedef {import("./interfaces").IL10n} IL10n */
|
|
|
|
import { FluentBundle, FluentResource } from "fluent-bundle";
|
|
import { DOMLocalization } from "fluent-dom";
|
|
import { L10n } from "./l10n.js";
|
|
import { shadow } from "pdfjs-lib";
|
|
|
|
/**
|
|
* @implements {IL10n}
|
|
*/
|
|
class ConstL10n extends L10n {
|
|
constructor(lang) {
|
|
super({ lang });
|
|
this._setL10n(
|
|
new DOMLocalization([], ConstL10n.#generateBundles.bind(ConstL10n, lang))
|
|
);
|
|
}
|
|
|
|
static async *#generateBundles(lang) {
|
|
let text;
|
|
if (typeof PDFJSDev === "undefined") {
|
|
const url = new URL(`./locale/${lang}/viewer.ftl`, window.location.href);
|
|
const data = await fetch(url);
|
|
text = await data.text();
|
|
} else {
|
|
text = PDFJSDev.eval("DEFAULT_FTL");
|
|
}
|
|
const resource = new FluentResource(text);
|
|
const bundle = new FluentBundle(lang);
|
|
const errors = bundle.addResource(resource);
|
|
if (errors.length) {
|
|
console.error("L10n errors", errors);
|
|
}
|
|
yield bundle;
|
|
}
|
|
|
|
static get instance() {
|
|
return shadow(this, "instance", new ConstL10n("en-us"));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* No-op implementation of the localization service.
|
|
* @implements {IL10n}
|
|
*/
|
|
const NullL10n = {
|
|
getLanguage() {
|
|
return ConstL10n.instance.getLanguage();
|
|
},
|
|
|
|
getDirection() {
|
|
return ConstL10n.instance.getDirection();
|
|
},
|
|
|
|
async get(ids, args = null, fallback) {
|
|
return ConstL10n.instance.get(ids, args, fallback);
|
|
},
|
|
|
|
async translate(element) {
|
|
return ConstL10n.instance.translate(element);
|
|
},
|
|
|
|
pause() {
|
|
return ConstL10n.instance.pause();
|
|
},
|
|
|
|
resume() {
|
|
return ConstL10n.instance.resume();
|
|
},
|
|
};
|
|
|
|
export { NullL10n };
|