Initial commit
This commit is contained in:
Tulir Asokan
64
web/index.css
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64
web/index.css
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/*
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Copyright (c) 2020 Tulir Asokan
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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* {
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font-family: sans-serif;
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}
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html {
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scrollbar-width: none;
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}
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body {
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margin: 0;
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}
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.main:not(.pack-list) {
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margin: 2rem;
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}
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.main.empty {
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text-align: center;
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}
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.stickerpack > .sticker-list {
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display: flex;
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flex-wrap: wrap;
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}
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.stickerpack > h1 {
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margin: .75rem;
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}
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.sticker {
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display: flex;
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padding: 4px;
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cursor: pointer;
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position: relative;
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width: 25vw;
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height: 25vw;
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box-sizing: border-box;
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}
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.sticker:hover {
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background-color: #eee;
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}
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.sticker > img {
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display: none;
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width: 100%;
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object-fit: contain;
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}
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.sticker > img.visible {
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display: initial;
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}
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h1 {
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font-size: 1rem;
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}
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14
web/index.html
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14
web/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<title>Maunium sticker picker</title>
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<link rel="stylesheet" href="index.css"/>
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<link rel="stylesheet" href="spinner.css"/>
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</head>
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<body>
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<noscript>This sticker picker requires JavaScript</noscript>
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<script src="index.js" type="module"></script>
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</body>
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</html>
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175
web/index.js
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175
web/index.js
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// Copyright (c) 2020 Tulir Asokan
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import { html, render, Component } from "https://unpkg.com/htm/preact/index.mjs?module"
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// The base URL for fetching packs. The app will first fetch ${PACK_BASE_URL}/index.json,
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// then ${PACK_BASE_URL}/${packFile} for each packFile in the packs object of the index.json file.
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const PACKS_BASE_URL = "packs"
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// This is updated from packs/index.json
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let HOMESERVER_URL = "https://matrix-client.matrix.org"
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const makeThumbnailURL = mxc => `${HOMESERVER_URL}/_matrix/media/r0/thumbnail/${mxc.substr(6)}?height=128&width=128&method=scale`
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class App extends Component {
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constructor(props) {
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super(props)
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this.state = {
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packs: [],
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loading: true,
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error: null,
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}
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this.observer = null
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}
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observeIntersection = intersections => {
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for (const entry of intersections) {
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const img = entry.target.children.item(0)
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if (entry.isIntersecting) {
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img.setAttribute("src", img.getAttribute("data-src"))
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img.classList.add("visible")
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} else {
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img.removeAttribute("src")
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img.classList.remove("visible")
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}
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}
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}
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componentDidMount() {
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fetch(`${PACKS_BASE_URL}/index.json`).then(async indexRes => {
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if (indexRes.status >= 400) {
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this.setState({
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loading: false,
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error: indexRes.status !== 404 ? indexRes.statusText : null,
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})
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return
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}
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const indexData = await indexRes.json()
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HOMESERVER_URL = indexData.homeserver_url || HOMESERVER_URL
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// TODO only load pack metadata when scrolled into view?
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for (const packFile of indexData.packs) {
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const packRes = await fetch(`${PACKS_BASE_URL}/${packFile}`)
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const packData = await packRes.json()
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this.setState({
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packs: [...this.state.packs, packData],
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loading: false,
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})
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}
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}, error => this.setState({ loading: false, error }))
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this.observer = new IntersectionObserver(this.observeIntersection, {
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rootMargin: "100px",
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threshold: 0,
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})
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}
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componentDidUpdate() {
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for (const elem of document.getElementsByClassName("sticker")) {
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this.observer.observe(elem)
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}
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}
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componentWillUnmount() {
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this.observer.disconnect()
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}
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render() {
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if (this.state.loading) {
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return html`<div class="main spinner"><${Spinner} size=${80} green /></div>`
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} else if (this.state.error) {
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return html`<div class="main error">
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<h1>Failed to load packs</h1>
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<p>${this.state.error}</p>
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</div>`
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} else if (this.state.packs.length === 0) {
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return html`<div class="main empty"><h1>No packs found :(</h1></div>`
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}
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return html`<div class="main pack-list">
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${this.state.packs.map(pack => html`<${Pack} id=${pack.id} ...${pack}/>`)}
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</div>`
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}
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}
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const Spinner = ({ size = 40, noCenter = false, noMargin = false, green = false }) => {
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let margin = 0
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if (!isNaN(+size)) {
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size = +size
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margin = noMargin ? 0 : `${Math.round(size / 6)}px`
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size = `${size}px`
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}
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const noInnerMargin = !noCenter || !margin
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const comp = html`
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<div style="width: ${size}; height: ${size}; margin: ${noInnerMargin ? 0 : margin} 0;"
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class="sk-chase ${green && "green"}">
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<div class="sk-chase-dot" />
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<div class="sk-chase-dot" />
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<div class="sk-chase-dot" />
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<div class="sk-chase-dot" />
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<div class="sk-chase-dot" />
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<div class="sk-chase-dot" />
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</div>
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`
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if (!noCenter) {
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return html`<div style="margin: ${margin} 0;" class="sk-center-wrapper">${comp}</div>`
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}
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return comp
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}
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const Pack = ({ title, stickers }) => html`<div class="stickerpack">
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<h1>${title}</h1>
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<div class="sticker-list">
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${stickers.map(sticker => html`
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<${Sticker} key=${sticker["net.maunium.telegram.sticker"].id} content=${sticker}/>
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`)}
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</div>
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</div>`
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const Sticker = ({ content }) => html`<div class="sticker" onClick=${() => sendSticker(content)}>
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<img data-src=${makeThumbnailURL(content.url)} alt=${content.body} />
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</div>`
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function sendSticker(content) {
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window.parent.postMessage({
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api: "fromWidget",
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action: "m.sticker",
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requestId: `sticker-${Date.now()}`,
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widgetId,
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data: {
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name: content.body,
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content,
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},
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}, "*")
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}
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let widgetId = null
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window.onmessage = event => {
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if (!window.parent || !event.data) {
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return
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}
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const request = event.data
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if (!request.requestId || !request.widgetId || !request.action || request.api !== "toWidget") {
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return
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}
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if (widgetId) {
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if (widgetId !== request.widgetId) {
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return
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}
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} else {
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widgetId = request.widgetId
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}
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window.parent.postMessage({
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...request,
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response: request.action === "capabilities" ? {
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capabilities: ["m.sticker"],
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} : {
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error: { message: "Action not supported" },
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},
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}, event.origin)
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}
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render(html`<${App} />`, document.body)
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64
web/spinner.css
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64
web/spinner.css
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/* Chase spinner from https://tobiasahlin.com/spinkit/. MIT license */
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.sk-center-wrapper {
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width: 100%;
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display: flex;
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justify-content: space-around;
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}
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.sk-chase {
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position: relative;
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animation: sk-chase 2.5s infinite linear both;
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}
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.sk-chase-dot {
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width: 100%;
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height: 100%;
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position: absolute;
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left: 0;
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top: 0;
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animation: sk-chase-dot 2.0s infinite ease-in-out both;
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}
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.sk-chase-dot:before {
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content: '';
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display: block;
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width: 25%;
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height: 25%;
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border-radius: 100%;
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animation: sk-chase-dot-before 2.0s infinite ease-in-out both;
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background-color: #FFF;
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}
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.sk-chase.green > .sk-chase-dot:before {
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background-color: #00C853;
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}
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.sk-chase-dot:nth-child(1) { animation-delay: -1.1s; }
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.sk-chase-dot:nth-child(2) { animation-delay: -1.0s; }
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.sk-chase-dot:nth-child(3) { animation-delay: -0.9s; }
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.sk-chase-dot:nth-child(4) { animation-delay: -0.8s; }
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.sk-chase-dot:nth-child(5) { animation-delay: -0.7s; }
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.sk-chase-dot:nth-child(6) { animation-delay: -0.6s; }
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.sk-chase-dot:nth-child(1):before { animation-delay: -1.1s; }
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.sk-chase-dot:nth-child(2):before { animation-delay: -1.0s; }
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.sk-chase-dot:nth-child(3):before { animation-delay: -0.9s; }
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.sk-chase-dot:nth-child(4):before { animation-delay: -0.8s; }
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.sk-chase-dot:nth-child(5):before { animation-delay: -0.7s; }
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.sk-chase-dot:nth-child(6):before { animation-delay: -0.6s; }
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@keyframes sk-chase {
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100% { transform: rotate(360deg); }
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}
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@keyframes sk-chase-dot {
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80%, 100% { transform: rotate(360deg); }
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}
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@keyframes sk-chase-dot-before {
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50% {
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transform: scale(0.4);
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}
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100%, 0% {
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transform: scale(1.0);
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}
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}
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