/** * Copyright 2020 Google LLC * * 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. */ // @license © 2020 Google LLC. Licensed under the Apache License, Version 2.0. /** * Opens a file from disk using the legacy `` method. * @type { typeof import("../../index").fileOpen } */ export default async (options = {}) => { return new Promise((resolve, reject) => { const input = document.createElement('input'); input.type = 'file'; const accept = [ ...(options.mimeTypes ? options.mimeTypes : []), options.extensions ? options.extensions : [], ].join(); input.multiple = options.multiple || false; // Empty string allows everything. input.accept = accept || ''; // ToDo: Remove this workaround once // https://github.com/whatwg/html/issues/6376 is specified and supported. const rejectOnPageInteraction = () => { window.removeEventListener('pointermove', rejectOnPageInteraction); window.removeEventListener('pointerdown', rejectOnPageInteraction); window.removeEventListener('keydown', rejectOnPageInteraction); reject(new DOMException('The user aborted a request.', 'AbortError')); }; window.addEventListener('pointermove', rejectOnPageInteraction); window.addEventListener('pointerdown', rejectOnPageInteraction); window.addEventListener('keydown', rejectOnPageInteraction); input.addEventListener('change', () => { window.removeEventListener('pointermove', rejectOnPageInteraction); window.removeEventListener('pointerdown', rejectOnPageInteraction); window.removeEventListener('keydown', rejectOnPageInteraction); resolve(input.multiple ? input.files : input.files[0]); }); input.click(); }); };