fd7a7e2859
- Extend the `fetchData` helper function to also support fetching of "blob" data. - Use the `fetchData` helper function more in the code-base, when fetching non-PDF data. Given that the Fetch API isn't supported for all protocols, this should improve compatibility for the PDF.js library.
88 lines
2.2 KiB
JavaScript
88 lines
2.2 KiB
JavaScript
/* Copyright 2021 Mozilla Foundation
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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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/** @typedef {import("./interfaces").IL10n} IL10n */
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import { fetchData, shadow } from "pdfjs-lib";
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import { FluentBundle, FluentResource } from "fluent-bundle";
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import { DOMLocalization } from "fluent-dom";
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import { L10n } from "./l10n.js";
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/**
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* @implements {IL10n}
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*/
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class ConstL10n extends L10n {
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constructor(lang) {
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super({ lang });
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this._setL10n(
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new DOMLocalization([], ConstL10n.#generateBundles.bind(ConstL10n, lang))
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);
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}
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static async *#generateBundles(lang) {
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const text =
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typeof PDFJSDev === "undefined"
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? await fetchData(
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new URL(`./locale/${lang}/viewer.ftl`, window.location.href),
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/* type = */ "text"
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)
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: PDFJSDev.eval("DEFAULT_FTL");
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const resource = new FluentResource(text);
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const bundle = new FluentBundle(lang);
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const errors = bundle.addResource(resource);
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if (errors.length) {
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console.error("L10n errors", errors);
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}
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yield bundle;
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}
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static get instance() {
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return shadow(this, "instance", new ConstL10n("en-us"));
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}
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}
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/**
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* No-op implementation of the localization service.
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* @implements {IL10n}
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*/
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const NullL10n = {
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getLanguage() {
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return ConstL10n.instance.getLanguage();
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},
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getDirection() {
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return ConstL10n.instance.getDirection();
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},
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async get(ids, args = null, fallback) {
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return ConstL10n.instance.get(ids, args, fallback);
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},
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async translate(element) {
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return ConstL10n.instance.translate(element);
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},
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pause() {
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return ConstL10n.instance.pause();
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},
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resume() {
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return ConstL10n.instance.resume();
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},
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};
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export { NullL10n };
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