4e12906061
- Over time the number and size of these factories have increased, especially the `DOMFilterFactory` class, and this split should thus aid readability/maintainability of the code. - By introducing a couple of new import maps we can avoid bundling the `DOMCMapReaderFactory`/`DOMStandardFontDataFactory` classes in the Firefox PDF Viewer, since they are dead code there given that worker-thread fetching is always being used. - This patch has been successfully tested, by running `$ ./mach test toolkit/components/pdfjs/`, in a local Firefox artifact-build. *Note:* This patch reduces the size of the `gulp mozcentral` output by `1.3` kilo-bytes, which isn't a lot but still cannot hurt.
66 lines
1.8 KiB
JavaScript
66 lines
1.8 KiB
JavaScript
/* Copyright 2015 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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import { fetchData } from "./display_utils.js";
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import { unreachable } from "../shared/util.js";
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class BaseStandardFontDataFactory {
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constructor({ baseUrl = null }) {
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if (
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(typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) &&
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this.constructor === BaseStandardFontDataFactory
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) {
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unreachable("Cannot initialize BaseStandardFontDataFactory.");
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}
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this.baseUrl = baseUrl;
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}
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async fetch({ filename }) {
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if (!this.baseUrl) {
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throw new Error(
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"Ensure that the `standardFontDataUrl` API parameter is provided."
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);
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}
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if (!filename) {
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throw new Error("Font filename must be specified.");
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}
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const url = `${this.baseUrl}${filename}`;
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return this._fetch(url).catch(reason => {
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throw new Error(`Unable to load font data at: ${url}`);
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});
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}
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/**
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* @ignore
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* @returns {Promise<Uint8Array>}
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*/
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async _fetch(url) {
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unreachable("Abstract method `_fetch` called.");
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}
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}
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class DOMStandardFontDataFactory extends BaseStandardFontDataFactory {
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/**
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* @ignore
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*/
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async _fetch(url) {
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const data = await fetchData(url, /* type = */ "arraybuffer");
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return new Uint8Array(data);
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}
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}
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export { BaseStandardFontDataFactory, DOMStandardFontDataFactory };
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