// Copyright (c) 2020 Tulir Asokan // // This Source Code Form is subject to the terms of the Mozilla Public // License, v. 2.0. If a copy of the MPL was not distributed with this // file, You can obtain one at http://mozilla.org/MPL/2.0/. import { html, render, Component } from "../lib/htm/preact.js" import { Spinner } from "./spinner.js" import * as widgetAPI from "./widget-api.js" import * as frequent from "./frequently-used.js" // The base URL for fetching packs. The app will first fetch ${PACK_BASE_URL}/index.json, // then ${PACK_BASE_URL}/${packFile} for each packFile in the packs object of the index.json file. const PACKS_BASE_URL = "packs" // This is updated from packs/index.json let HOMESERVER_URL = "https://matrix-client.matrix.org" const makeThumbnailURL = mxc => `${HOMESERVER_URL}/_matrix/media/r0/thumbnail/${mxc.substr(6)}?height=128&width=128&method=scale` // We need to detect iOS webkit because it has a bug related to scrolling non-fixed divs // This is also used to fix scrolling to sections on Element iOS const isMobileSafari = navigator.userAgent.match(/(iPod|iPhone|iPad)/) && navigator.userAgent.match(/AppleWebKit/) export const parseQuery = str => Object.fromEntries( str.split("&") .map(part => part.split("=")) .map(([key, value = ""]) => [key, value])) const supportedThemes = ["light", "dark", "black"] class App extends Component { constructor(props) { super(props) this.defaultTheme = parseQuery(location.search.substr(1)).theme this.state = { packs: [], loading: true, error: null, stickersPerRow: parseInt(localStorage.mauStickersPerRow || "4"), theme: localStorage.mauStickerThemeOverride || this.defaultTheme, frequentlyUsed: { id: "frequently-used", title: "Frequently used", stickerIDs: frequent.get(), stickers: [], }, } if (!supportedThemes.includes(this.state.theme)) { this.state.theme = "light" } if (!supportedThemes.includes(this.defaultTheme)) { this.defaultTheme = "light" } this.stickersByID = new Map(JSON.parse(localStorage.mauFrequentlyUsedStickerCache || "[]")) this.state.frequentlyUsed.stickers = this._getStickersByID(this.state.frequentlyUsed.stickerIDs) this.imageObserver = null this.packListRef = null this.navRef = null this.sendSticker = this.sendSticker.bind(this) this.navScroll = this.navScroll.bind(this) this.reloadPacks = this.reloadPacks.bind(this) this.observeSectionIntersections = this.observeSectionIntersections.bind(this) this.observeImageIntersections = this.observeImageIntersections.bind(this) } _getStickersByID(ids) { return ids.map(id => this.stickersByID.get(id)).filter(sticker => !!sticker) } updateFrequentlyUsed() { const stickerIDs = frequent.get() const stickers = this._getStickersByID(stickerIDs) this.setState({ frequentlyUsed: { ...this.state.frequentlyUsed, stickerIDs, stickers, }, }) localStorage.mauFrequentlyUsedStickerCache = JSON.stringify(stickers.map(sticker => [sticker.id, sticker])) } setStickersPerRow(val) { localStorage.mauStickersPerRow = val document.documentElement.style.setProperty("--stickers-per-row", localStorage.mauStickersPerRow) this.setState({ stickersPerRow: val, }) this.packListRef.scrollTop = this.packListRef.scrollHeight } setTheme(theme) { if (theme === "default") { delete localStorage.mauStickerThemeOverride this.setState({ theme: this.defaultTheme }) } else { localStorage.mauStickerThemeOverride = theme this.setState({ theme: theme }) } } reloadPacks() { this.imageObserver.disconnect() this.sectionObserver.disconnect() this.setState({ packs: [] }) this._loadPacks(true) } _loadPacks(disableCache = false) { const cache = disableCache ? "no-cache" : undefined fetch(`${PACKS_BASE_URL}/index.json`, { cache }).then(async indexRes => { if (indexRes.status >= 400) { this.setState({ loading: false, error: indexRes.status !== 404 ? indexRes.statusText : null, }) return } const indexData = await indexRes.json() HOMESERVER_URL = indexData.homeserver_url || HOMESERVER_URL // TODO only load pack metadata when scrolled into view? for (const packFile of indexData.packs) { const packRes = await fetch(`${PACKS_BASE_URL}/${packFile}`, { cache }) const packData = await packRes.json() for (const sticker of packData.stickers) { this.stickersByID.set(sticker.id, sticker) } this.setState({ packs: [...this.state.packs, packData], loading: false, }) } this.updateFrequentlyUsed() }, error => this.setState({ loading: false, error })) } componentDidMount() { document.documentElement.style.setProperty("--stickers-per-row", this.state.stickersPerRow.toString()) this._loadPacks() this.imageObserver = new IntersectionObserver(this.observeImageIntersections, { rootMargin: "100px", }) this.sectionObserver = new IntersectionObserver(this.observeSectionIntersections) } observeImageIntersections(intersections) { for (const entry of intersections) { const img = entry.target.children.item(0) if (entry.isIntersecting) { img.setAttribute("src", img.getAttribute("data-src")) img.classList.add("visible") } else { img.removeAttribute("src") img.classList.remove("visible") } } } observeSectionIntersections(intersections) { const navWidth = this.navRef.getBoundingClientRect().width let minX = 0, maxX = navWidth let minXElem = null let maxXElem = null for (const entry of intersections) { const packID = entry.target.getAttribute("data-pack-id") const navElement = document.getElementById(`nav-${packID}`) if (entry.isIntersecting) { navElement.classList.add("visible") const bb = navElement.getBoundingClientRect() if (bb.x < minX) { minX = bb.x minXElem = navElement } else if (bb.right > maxX) { maxX = bb.right maxXElem = navElement } } else { navElement.classList.remove("visible") } } if (minXElem !== null) { minXElem.scrollIntoView({ inline: "start" }) } else if (maxXElem !== null) { maxXElem.scrollIntoView({ inline: "end" }) } } componentDidUpdate() { if (this.packListRef === null) { return } for (const elem of this.packListRef.getElementsByClassName("sticker")) { this.imageObserver.observe(elem) } for (const elem of this.packListRef.children) { this.sectionObserver.observe(elem) } } componentWillUnmount() { this.imageObserver.disconnect() this.sectionObserver.disconnect() } sendSticker(evt) { const id = evt.currentTarget.getAttribute("data-sticker-id") const sticker = this.stickersByID.get(id) frequent.add(id) this.updateFrequentlyUsed() widgetAPI.sendSticker(sticker) } navScroll(evt) { this.navRef.scrollLeft += evt.deltaY * 12 } render() { const theme = `theme-${this.state.theme}` if (this.state.loading) { return html`<main class="spinner ${theme}"><${Spinner} size=${80} green /></main>` } else if (this.state.error) { return html`<main class="error ${theme}"> <h1>Failed to load packs</h1> <p>${this.state.error}</p> </main>` } else if (this.state.packs.length === 0) { return html`<main class="empty ${theme}"><h1>No packs found 😿</h1></main>` } return html`<main class="has-content ${theme}"> <nav onWheel=${this.navScroll} ref=${elem => this.navRef = elem}> <${NavBarItem} pack=${this.state.frequentlyUsed} iconOverride="recent" /> ${this.state.packs.map(pack => html`<${NavBarItem} id=${pack.id} pack=${pack}/>`)} <${NavBarItem} pack=${{ id: "settings", title: "Settings" }} iconOverride="settings" /> </nav> <div class="pack-list ${isMobileSafari ? "ios-safari-hack" : ""}" ref=${elem => this.packListRef = elem}> <${Pack} pack=${this.state.frequentlyUsed} send=${this.sendSticker} /> ${this.state.packs.map(pack => html`<${Pack} id=${pack.id} pack=${pack} send=${this.sendSticker} />`)} <${Settings} app=${this}/> </div> </main>` } } const Settings = ({ app }) => html` <section class="stickerpack settings" id="pack-settings" data-pack-id="settings"> <h1>Settings</h1> <div class="settings-list"> <button onClick=${app.reloadPacks}>Reload</button> <div> <label for="stickers-per-row">Stickers per row: ${app.state.stickersPerRow}</label> <input type="range" min=2 max=10 id="stickers-per-row" id="stickers-per-row" value=${app.state.stickersPerRow} onInput=${evt => app.setStickersPerRow(evt.target.value)} /> </div> <div> <label for="theme">Theme: </label> <select name="theme" id="theme" onChange=${evt => app.setTheme(evt.target.value)}> <option value="default">Default</option> <option value="light">Light</option> <option value="dark">Dark</option> <option value="black">Black</option> </select> </div> </div> </section> ` // By default we just let the browser handle scrolling to sections, but webviews on Element iOS // open the link in the browser instead of just scrolling there, so we need to scroll manually: const scrollToSection = (evt, id) => { const pack = document.getElementById(`pack-${id}`) pack.scrollIntoView({ block: "start", behavior: "instant" }) evt.preventDefault() } const NavBarItem = ({ pack, iconOverride = null }) => html` <a href="#pack-${pack.id}" id="nav-${pack.id}" data-pack-id=${pack.id} title=${pack.title} onClick=${isMobileSafari ? (evt => scrollToSection(evt, pack.id)) : undefined}> <div class="sticker"> ${iconOverride ? html` <span class="icon icon-${iconOverride}"/> ` : html` <img src=${makeThumbnailURL(pack.stickers[0].url)} alt=${pack.stickers[0].body} class="visible" /> `} </div> </a> ` const Pack = ({ pack, send }) => html` <section class="stickerpack" id="pack-${pack.id}" data-pack-id=${pack.id}> <h1>${pack.title}</h1> <div class="sticker-list"> ${pack.stickers.map(sticker => html` <${Sticker} key=${sticker.id} content=${sticker} send=${send}/> `)} </div> </section> ` const Sticker = ({ content, send }) => html` <div class="sticker" onClick=${send} data-sticker-id=${content.id}> <img data-src=${makeThumbnailURL(content.url)} alt=${content.body} /> </div> ` render(html`<${App} />`, document.body)