mirror of
https://github.com/element-hq/element-web
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21e33362e5
This is intended to be hooked up to an external system. Due to the extra events and metadata concerns, this is only available if turned on from the config. See `sendTimePerformanceMetrics.ts` for event schemas.
700 lines
26 KiB
TypeScript
700 lines
26 KiB
TypeScript
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2019 New Vector Ltd
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Copyright 2020 The Matrix.org Foundation C.I.C.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 React from "react";
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import { MatrixClient } from "matrix-js-sdk/src/client";
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import dis from './dispatcher/dispatcher';
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import * as sdk from './index';
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import { _t } from './languageHandler';
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import Modal from './Modal';
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import RoomViewStore from './stores/RoomViewStore';
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import encrypt from "browser-encrypt-attachment";
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import extractPngChunks from "png-chunks-extract";
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import Spinner from "./components/views/elements/Spinner";
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import { Action } from "./dispatcher/actions";
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import CountlyAnalytics from "./CountlyAnalytics";
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import {
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UploadCanceledPayload,
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UploadErrorPayload,
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UploadFinishedPayload,
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UploadProgressPayload,
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UploadStartedPayload,
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} from "./dispatcher/payloads/UploadPayload";
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import { IUpload } from "./models/IUpload";
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import { IAbortablePromise, IImageInfo } from "matrix-js-sdk/src/@types/partials";
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import { BlurhashEncoder } from "./BlurhashEncoder";
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import SettingsStore from "./settings/SettingsStore";
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import { decorateStartSendingTime, sendRoundTripMetric } from "./sendTimePerformanceMetrics";
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const MAX_WIDTH = 800;
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const MAX_HEIGHT = 600;
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// scraped out of a macOS hidpi (5660ppm) screenshot png
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// 5669 px (x-axis) , 5669 px (y-axis) , per metre
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const PHYS_HIDPI = [0x00, 0x00, 0x16, 0x25, 0x00, 0x00, 0x16, 0x25, 0x01];
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export const BLURHASH_FIELD = "xyz.amorgan.blurhash"; // MSC2448
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export class UploadCanceledError extends Error {}
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type ThumbnailableElement = HTMLImageElement | HTMLVideoElement;
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interface IMediaConfig {
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"m.upload.size"?: number;
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}
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interface IContent {
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body: string;
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msgtype: string;
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info: {
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size: number;
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mimetype?: string;
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};
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file?: string;
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url?: string;
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}
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interface IThumbnail {
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info: {
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// eslint-disable-next-line camelcase
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thumbnail_info: {
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w: number;
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h: number;
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mimetype: string;
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size: number;
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};
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w: number;
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h: number;
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[BLURHASH_FIELD]: string;
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};
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thumbnail: Blob;
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}
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/**
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* Create a thumbnail for a image DOM element.
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* The image will be smaller than MAX_WIDTH and MAX_HEIGHT.
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* The thumbnail will have the same aspect ratio as the original.
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* Draws the element into a canvas using CanvasRenderingContext2D.drawImage
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* Then calls Canvas.toBlob to get a blob object for the image data.
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*
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* Since it needs to calculate the dimensions of the source image and the
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* thumbnailed image it returns an info object filled out with information
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* about the original image and the thumbnail.
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*
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* @param {HTMLElement} element The element to thumbnail.
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* @param {number} inputWidth The width of the image in the input element.
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* @param {number} inputHeight the width of the image in the input element.
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* @param {String} mimeType The mimeType to save the blob as.
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* @return {Promise} A promise that resolves with an object with an info key
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* and a thumbnail key.
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*/
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async function createThumbnail(
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element: ThumbnailableElement,
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inputWidth: number,
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inputHeight: number,
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mimeType: string,
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): Promise<IThumbnail> {
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let targetWidth = inputWidth;
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let targetHeight = inputHeight;
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if (targetHeight > MAX_HEIGHT) {
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targetWidth = Math.floor(targetWidth * (MAX_HEIGHT / targetHeight));
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targetHeight = MAX_HEIGHT;
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}
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if (targetWidth > MAX_WIDTH) {
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targetHeight = Math.floor(targetHeight * (MAX_WIDTH / targetWidth));
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targetWidth = MAX_WIDTH;
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}
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let canvas: HTMLCanvasElement | OffscreenCanvas;
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if (window.OffscreenCanvas) {
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canvas = new window.OffscreenCanvas(targetWidth, targetHeight);
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} else {
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canvas = document.createElement("canvas");
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canvas.width = targetWidth;
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canvas.height = targetHeight;
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}
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const context = canvas.getContext("2d");
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context.drawImage(element, 0, 0, targetWidth, targetHeight);
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let thumbnailPromise: Promise<Blob>;
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if (window.OffscreenCanvas) {
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thumbnailPromise = (canvas as OffscreenCanvas).convertToBlob({ type: mimeType });
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} else {
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thumbnailPromise = new Promise<Blob>(resolve => (canvas as HTMLCanvasElement).toBlob(resolve, mimeType));
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}
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const imageData = context.getImageData(0, 0, targetWidth, targetHeight);
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// thumbnailPromise and blurhash promise are being awaited concurrently
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const blurhash = await BlurhashEncoder.instance.getBlurhash(imageData);
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const thumbnail = await thumbnailPromise;
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return {
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info: {
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thumbnail_info: {
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w: targetWidth,
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h: targetHeight,
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mimetype: thumbnail.type,
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size: thumbnail.size,
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},
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w: inputWidth,
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h: inputHeight,
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[BLURHASH_FIELD]: blurhash,
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},
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thumbnail,
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};
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}
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/**
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* Load a file into a newly created image element.
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*
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* @param {File} imageFile The file to load in an image element.
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* @return {Promise} A promise that resolves with the html image element.
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*/
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async function loadImageElement(imageFile: File) {
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// Load the file into an html element
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const img = document.createElement("img");
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const objectUrl = URL.createObjectURL(imageFile);
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const imgPromise = new Promise((resolve, reject) => {
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img.onload = function() {
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URL.revokeObjectURL(objectUrl);
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resolve(img);
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};
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img.onerror = function(e) {
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reject(e);
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};
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});
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img.src = objectUrl;
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// check for hi-dpi PNGs and fudge display resolution as needed.
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// this is mainly needed for macOS screencaps
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let parsePromise;
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if (imageFile.type === "image/png") {
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// in practice macOS happens to order the chunks so they fall in
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// the first 0x1000 bytes (thanks to a massive ICC header).
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// Thus we could slice the file down to only sniff the first 0x1000
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// bytes (but this makes extractPngChunks choke on the corrupt file)
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const headers = imageFile; //.slice(0, 0x1000);
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parsePromise = readFileAsArrayBuffer(headers).then(arrayBuffer => {
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const buffer = new Uint8Array(arrayBuffer);
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const chunks = extractPngChunks(buffer);
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for (const chunk of chunks) {
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if (chunk.name === 'pHYs') {
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if (chunk.data.byteLength !== PHYS_HIDPI.length) return;
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return chunk.data.every((val, i) => val === PHYS_HIDPI[i]);
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}
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}
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return false;
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});
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}
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const [hidpi] = await Promise.all([parsePromise, imgPromise]);
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const width = hidpi ? (img.width >> 1) : img.width;
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const height = hidpi ? (img.height >> 1) : img.height;
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return { width, height, img };
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}
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// Minimum size for image files before we generate a thumbnail for them.
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const IMAGE_SIZE_THRESHOLD_THUMBNAIL = 1 << 15; // 32KB
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// Minimum size improvement for image thumbnails, if both are not met then don't bother uploading thumbnail.
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const IMAGE_THUMBNAIL_MIN_REDUCTION_SIZE = 1 << 16; // 1MB
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const IMAGE_THUMBNAIL_MIN_REDUCTION_PERCENT = 0.1; // 10%
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// We don't apply these thresholds to video thumbnails as a poster image is always useful
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// and videos tend to be much larger.
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/**
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* Read the metadata for an image file and create and upload a thumbnail of the image.
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*
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* @param {MatrixClient} matrixClient A matrixClient to upload the thumbnail with.
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* @param {String} roomId The ID of the room the image will be uploaded in.
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* @param {File} imageFile The image to read and thumbnail.
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* @return {Promise} A promise that resolves with the attachment info.
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*/
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async function infoForImageFile(matrixClient: MatrixClient, roomId: string, imageFile: File) {
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let thumbnailType = "image/png";
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if (imageFile.type === "image/jpeg") {
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thumbnailType = "image/jpeg";
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}
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const imageElement = await loadImageElement(imageFile);
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const result = await createThumbnail(imageElement.img, imageElement.width, imageElement.height, thumbnailType);
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const imageInfo = result.info;
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// we do all sizing checks here because we still rely on thumbnail generation for making a blurhash from.
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const sizeDifference = imageFile.size - imageInfo.thumbnail_info.size;
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if (
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imageFile.size <= IMAGE_SIZE_THRESHOLD_THUMBNAIL || // image is small enough already
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(sizeDifference <= IMAGE_THUMBNAIL_MIN_REDUCTION_SIZE && // thumbnail is not sufficiently smaller than original
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sizeDifference <= (imageFile.size * IMAGE_THUMBNAIL_MIN_REDUCTION_PERCENT))
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) {
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delete imageInfo["thumbnail_info"];
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return imageInfo;
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}
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const uploadResult = await uploadFile(matrixClient, roomId, result.thumbnail);
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imageInfo["thumbnail_url"] = uploadResult.url;
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imageInfo["thumbnail_file"] = uploadResult.file;
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return imageInfo;
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}
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/**
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* Load a file into a newly created video element and pull some strings
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* in an attempt to guarantee the first frame will be showing.
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*
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* @param {File} videoFile The file to load in an video element.
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* @return {Promise} A promise that resolves with the video image element.
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*/
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function loadVideoElement(videoFile): Promise<HTMLVideoElement> {
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return new Promise((resolve, reject) => {
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// Load the file into an html element
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const video = document.createElement("video");
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video.preload = "metadata";
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video.playsInline = true;
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video.muted = true;
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const reader = new FileReader();
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reader.onload = function(ev) {
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// Wait until we have enough data to thumbnail the first frame.
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video.onloadeddata = async function() {
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resolve(video);
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video.pause();
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};
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video.onerror = function(e) {
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reject(e);
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};
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video.src = ev.target.result as string;
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video.load();
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video.play();
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};
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reader.onerror = function(e) {
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reject(e);
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};
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reader.readAsDataURL(videoFile);
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});
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}
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/**
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* Read the metadata for a video file and create and upload a thumbnail of the video.
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*
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* @param {MatrixClient} matrixClient A matrixClient to upload the thumbnail with.
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* @param {String} roomId The ID of the room the video will be uploaded to.
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* @param {File} videoFile The video to read and thumbnail.
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* @return {Promise} A promise that resolves with the attachment info.
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*/
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function infoForVideoFile(matrixClient, roomId, videoFile) {
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const thumbnailType = "image/jpeg";
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let videoInfo;
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return loadVideoElement(videoFile).then((video) => {
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return createThumbnail(video, video.videoWidth, video.videoHeight, thumbnailType);
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}).then((result) => {
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videoInfo = result.info;
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return uploadFile(matrixClient, roomId, result.thumbnail);
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}).then((result) => {
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videoInfo.thumbnail_url = result.url;
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videoInfo.thumbnail_file = result.file;
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return videoInfo;
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});
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}
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/**
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* Read the file as an ArrayBuffer.
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* @param {File} file The file to read
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* @return {Promise} A promise that resolves with an ArrayBuffer when the file
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* is read.
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*/
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function readFileAsArrayBuffer(file: File | Blob): Promise<ArrayBuffer> {
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return new Promise((resolve, reject) => {
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const reader = new FileReader();
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reader.onload = function(e) {
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resolve(e.target.result as ArrayBuffer);
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};
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reader.onerror = function(e) {
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reject(e);
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};
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reader.readAsArrayBuffer(file);
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});
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}
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/**
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* Upload the file to the content repository.
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* If the room is encrypted then encrypt the file before uploading.
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*
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* @param {MatrixClient} matrixClient The matrix client to upload the file with.
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* @param {String} roomId The ID of the room being uploaded to.
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* @param {File} file The file to upload.
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* @param {Function?} progressHandler optional callback to be called when a chunk of
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* data is uploaded.
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* @return {Promise} A promise that resolves with an object.
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* If the file is unencrypted then the object will have a "url" key.
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* If the file is encrypted then the object will have a "file" key.
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*/
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export function uploadFile(
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matrixClient: MatrixClient,
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roomId: string,
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file: File | Blob,
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progressHandler?: any, // TODO: Types
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): IAbortablePromise<{url?: string, file?: any}> { // TODO: Types
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let canceled = false;
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if (matrixClient.isRoomEncrypted(roomId)) {
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// If the room is encrypted then encrypt the file before uploading it.
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// First read the file into memory.
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let uploadPromise;
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let encryptInfo;
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const prom = readFileAsArrayBuffer(file).then(function(data) {
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if (canceled) throw new UploadCanceledError();
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// Then encrypt the file.
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return encrypt.encryptAttachment(data);
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}).then(function(encryptResult) {
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if (canceled) throw new UploadCanceledError();
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// Record the information needed to decrypt the attachment.
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encryptInfo = encryptResult.info;
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// Pass the encrypted data as a Blob to the uploader.
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const blob = new Blob([encryptResult.data]);
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uploadPromise = matrixClient.uploadContent(blob, {
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progressHandler: progressHandler,
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includeFilename: false,
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});
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return uploadPromise;
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}).then(function(url) {
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if (canceled) throw new UploadCanceledError();
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// If the attachment is encrypted then bundle the URL along
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// with the information needed to decrypt the attachment and
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// add it under a file key.
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encryptInfo.url = url;
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if (file.type) {
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encryptInfo.mimetype = file.type;
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}
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return { "file": encryptInfo };
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}) as IAbortablePromise<{ file: any }>;
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prom.abort = () => {
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canceled = true;
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if (uploadPromise) matrixClient.cancelUpload(uploadPromise);
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};
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return prom;
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} else {
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const basePromise = matrixClient.uploadContent(file, {
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progressHandler: progressHandler,
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});
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const promise1 = basePromise.then(function(url) {
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if (canceled) throw new UploadCanceledError();
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// If the attachment isn't encrypted then include the URL directly.
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return { url };
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}) as IAbortablePromise<{ url: string }>;
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promise1.abort = () => {
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canceled = true;
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matrixClient.cancelUpload(basePromise);
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};
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return promise1;
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}
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}
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export default class ContentMessages {
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private inprogress: IUpload[] = [];
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private mediaConfig: IMediaConfig = null;
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sendStickerContentToRoom(url: string, roomId: string, info: IImageInfo, text: string, matrixClient: MatrixClient) {
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const startTime = CountlyAnalytics.getTimestamp();
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const prom = matrixClient.sendStickerMessage(roomId, url, info, text).catch((e) => {
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console.warn(`Failed to send content with URL ${url} to room ${roomId}`, e);
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throw e;
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});
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CountlyAnalytics.instance.trackSendMessage(startTime, prom, roomId, false, false, { msgtype: "m.sticker" });
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return prom;
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}
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getUploadLimit() {
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if (this.mediaConfig !== null && this.mediaConfig["m.upload.size"] !== undefined) {
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return this.mediaConfig["m.upload.size"];
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} else {
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return null;
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}
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}
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async sendContentListToRoom(files: File[], roomId: string, matrixClient: MatrixClient) {
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if (matrixClient.isGuest()) {
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dis.dispatch({ action: 'require_registration' });
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return;
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}
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const isQuoting = Boolean(RoomViewStore.getQuotingEvent());
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if (isQuoting) {
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// FIXME: Using an import will result in Element crashing
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const QuestionDialog = sdk.getComponent("dialogs.QuestionDialog");
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const { finished } = Modal.createTrackedDialog<[boolean]>('Upload Reply Warning', '', QuestionDialog, {
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title: _t('Replying With Files'),
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description: (
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<div>{ _t(
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'At this time it is not possible to reply with a file. ' +
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'Would you like to upload this file without replying?',
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) }</div>
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),
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hasCancelButton: true,
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button: _t("Continue"),
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});
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const [shouldUpload] = await finished;
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if (!shouldUpload) return;
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}
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if (!this.mediaConfig) { // hot-path optimization to not flash a spinner if we don't need to
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const modal = Modal.createDialog(Spinner, null, 'mx_Dialog_spinner');
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await this.ensureMediaConfigFetched(matrixClient);
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modal.close();
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}
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const tooBigFiles = [];
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const okFiles = [];
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for (let i = 0; i < files.length; ++i) {
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if (this.isFileSizeAcceptable(files[i])) {
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okFiles.push(files[i]);
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} else {
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tooBigFiles.push(files[i]);
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}
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}
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if (tooBigFiles.length > 0) {
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// FIXME: Using an import will result in Element crashing
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const UploadFailureDialog = sdk.getComponent("dialogs.UploadFailureDialog");
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const { finished } = Modal.createTrackedDialog<[boolean]>('Upload Failure', '', UploadFailureDialog, {
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badFiles: tooBigFiles,
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totalFiles: files.length,
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contentMessages: this,
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});
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const [shouldContinue] = await finished;
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if (!shouldContinue) return;
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}
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let uploadAll = false;
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// Promise to complete before sending next file into room, used for synchronisation of file-sending
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// to match the order the files were specified in
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let promBefore: Promise<any> = Promise.resolve();
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|
for (let i = 0; i < okFiles.length; ++i) {
|
|
const file = okFiles[i];
|
|
if (!uploadAll) {
|
|
// FIXME: Using an import will result in Element crashing
|
|
const UploadConfirmDialog = sdk.getComponent("dialogs.UploadConfirmDialog");
|
|
const { finished } = Modal.createTrackedDialog<[boolean, boolean]>('Upload Files confirmation',
|
|
'', UploadConfirmDialog, {
|
|
file,
|
|
currentIndex: i,
|
|
totalFiles: okFiles.length,
|
|
},
|
|
);
|
|
const [shouldContinue, shouldUploadAll] = await finished;
|
|
if (!shouldContinue) break;
|
|
if (shouldUploadAll) {
|
|
uploadAll = true;
|
|
}
|
|
}
|
|
promBefore = this.sendContentToRoom(file, roomId, matrixClient, promBefore);
|
|
}
|
|
}
|
|
|
|
getCurrentUploads() {
|
|
return this.inprogress.filter(u => !u.canceled);
|
|
}
|
|
|
|
cancelUpload(promise: Promise<any>, matrixClient: MatrixClient) {
|
|
let upload: IUpload;
|
|
for (let i = 0; i < this.inprogress.length; ++i) {
|
|
if (this.inprogress[i].promise === promise) {
|
|
upload = this.inprogress[i];
|
|
break;
|
|
}
|
|
}
|
|
if (upload) {
|
|
upload.canceled = true;
|
|
matrixClient.cancelUpload(upload.promise);
|
|
dis.dispatch<UploadCanceledPayload>({ action: Action.UploadCanceled, upload });
|
|
}
|
|
}
|
|
|
|
private sendContentToRoom(file: File, roomId: string, matrixClient: MatrixClient, promBefore: Promise<any>) {
|
|
const startTime = CountlyAnalytics.getTimestamp();
|
|
const content: IContent = {
|
|
body: file.name || 'Attachment',
|
|
info: {
|
|
size: file.size,
|
|
},
|
|
msgtype: "", // set later
|
|
};
|
|
|
|
if (SettingsStore.getValue("Performance.addSendMessageTimingMetadata")) {
|
|
decorateStartSendingTime(content);
|
|
}
|
|
|
|
// if we have a mime type for the file, add it to the message metadata
|
|
if (file.type) {
|
|
content.info.mimetype = file.type;
|
|
}
|
|
|
|
const prom = new Promise<void>((resolve) => {
|
|
if (file.type.indexOf('image/') === 0) {
|
|
content.msgtype = 'm.image';
|
|
infoForImageFile(matrixClient, roomId, file).then((imageInfo) => {
|
|
Object.assign(content.info, imageInfo);
|
|
resolve();
|
|
}, (e) => {
|
|
console.error(e);
|
|
content.msgtype = 'm.file';
|
|
resolve();
|
|
});
|
|
} else if (file.type.indexOf('audio/') === 0) {
|
|
content.msgtype = 'm.audio';
|
|
resolve();
|
|
} else if (file.type.indexOf('video/') === 0) {
|
|
content.msgtype = 'm.video';
|
|
infoForVideoFile(matrixClient, roomId, file).then((videoInfo) => {
|
|
Object.assign(content.info, videoInfo);
|
|
resolve();
|
|
}, (e) => {
|
|
content.msgtype = 'm.file';
|
|
resolve();
|
|
});
|
|
} else {
|
|
content.msgtype = 'm.file';
|
|
resolve();
|
|
}
|
|
}) as IAbortablePromise<void>;
|
|
|
|
// create temporary abort handler for before the actual upload gets passed off to js-sdk
|
|
prom.abort = () => {
|
|
upload.canceled = true;
|
|
};
|
|
|
|
const upload: IUpload = {
|
|
fileName: file.name || 'Attachment',
|
|
roomId: roomId,
|
|
total: file.size,
|
|
loaded: 0,
|
|
promise: prom,
|
|
};
|
|
this.inprogress.push(upload);
|
|
dis.dispatch<UploadStartedPayload>({ action: Action.UploadStarted, upload });
|
|
|
|
// Focus the composer view
|
|
dis.fire(Action.FocusSendMessageComposer);
|
|
|
|
function onProgress(ev) {
|
|
upload.total = ev.total;
|
|
upload.loaded = ev.loaded;
|
|
dis.dispatch<UploadProgressPayload>({ action: Action.UploadProgress, upload });
|
|
}
|
|
|
|
let error;
|
|
return prom.then(function() {
|
|
if (upload.canceled) throw new UploadCanceledError();
|
|
// XXX: upload.promise must be the promise that
|
|
// is returned by uploadFile as it has an abort()
|
|
// method hacked onto it.
|
|
upload.promise = uploadFile(matrixClient, roomId, file, onProgress);
|
|
return upload.promise.then(function(result) {
|
|
content.file = result.file;
|
|
content.url = result.url;
|
|
});
|
|
}).then(() => {
|
|
// Await previous message being sent into the room
|
|
return promBefore;
|
|
}).then(function() {
|
|
if (upload.canceled) throw new UploadCanceledError();
|
|
const prom = matrixClient.sendMessage(roomId, content);
|
|
if (SettingsStore.getValue("Performance.addSendMessageTimingMetadata")) {
|
|
prom.then(resp => {
|
|
sendRoundTripMetric(matrixClient, roomId, resp.event_id);
|
|
});
|
|
}
|
|
CountlyAnalytics.instance.trackSendMessage(startTime, prom, roomId, false, false, content);
|
|
return prom;
|
|
}, function(err) {
|
|
error = err;
|
|
if (!upload.canceled) {
|
|
let desc = _t("The file '%(fileName)s' failed to upload.", { fileName: upload.fileName });
|
|
if (err.http_status === 413) {
|
|
desc = _t(
|
|
"The file '%(fileName)s' exceeds this homeserver's size limit for uploads",
|
|
{ fileName: upload.fileName },
|
|
);
|
|
}
|
|
// FIXME: Using an import will result in Element crashing
|
|
const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
|
|
Modal.createTrackedDialog('Upload failed', '', ErrorDialog, {
|
|
title: _t('Upload Failed'),
|
|
description: desc,
|
|
});
|
|
}
|
|
}).finally(() => {
|
|
for (let i = 0; i < this.inprogress.length; ++i) {
|
|
if (this.inprogress[i].promise === upload.promise) {
|
|
this.inprogress.splice(i, 1);
|
|
break;
|
|
}
|
|
}
|
|
if (error) {
|
|
// 413: File was too big or upset the server in some way:
|
|
// clear the media size limit so we fetch it again next time
|
|
// we try to upload
|
|
if (error && error.http_status === 413) {
|
|
this.mediaConfig = null;
|
|
}
|
|
dis.dispatch<UploadErrorPayload>({ action: Action.UploadFailed, upload, error });
|
|
} else {
|
|
dis.dispatch<UploadFinishedPayload>({ action: Action.UploadFinished, upload });
|
|
dis.dispatch({ action: 'message_sent' });
|
|
}
|
|
});
|
|
}
|
|
|
|
private isFileSizeAcceptable(file: File) {
|
|
if (this.mediaConfig !== null &&
|
|
this.mediaConfig["m.upload.size"] !== undefined &&
|
|
file.size > this.mediaConfig["m.upload.size"]) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private ensureMediaConfigFetched(matrixClient: MatrixClient) {
|
|
if (this.mediaConfig !== null) return;
|
|
|
|
console.log("[Media Config] Fetching");
|
|
return matrixClient.getMediaConfig().then((config) => {
|
|
console.log("[Media Config] Fetched config:", config);
|
|
return config;
|
|
}).catch(() => {
|
|
// Media repo can't or won't report limits, so provide an empty object (no limits).
|
|
console.log("[Media Config] Could not fetch config, so not limiting uploads.");
|
|
return {};
|
|
}).then((config) => {
|
|
this.mediaConfig = config;
|
|
});
|
|
}
|
|
|
|
static sharedInstance() {
|
|
if (window.mxContentMessages === undefined) {
|
|
window.mxContentMessages = new ContentMessages();
|
|
}
|
|
return window.mxContentMessages;
|
|
}
|
|
}
|