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322 lines
6.7 KiB
322 lines
6.7 KiB
<script context="module">
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export async function preload({ params }) {
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const res = await this.fetch(`tutorial/${params.slug}.json`);
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if (!res.ok) {
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return this.redirect(301, `tutorial/basics`);
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}
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return {
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slug: params.slug,
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chapter: await res.json()
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};
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}
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</script>
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<script>
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import Repl from '@sveltejs/svelte-repl';
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import { getContext } from 'svelte';
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import ScreenToggle from '../../../components/ScreenToggle.svelte';
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import TableOfContents from './_TableOfContents.svelte';
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import {
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mapbox_setup, // needed for context API tutorial
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rollupUrl,
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svelteUrl
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} from '../../../config';
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export let slug;
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export let chapter;
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const { sections } = getContext('tutorial');
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let repl;
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let prev;
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let scrollable;
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const lookup = new Map();
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let width = process.browser ? window.innerWidth : 1000;
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let offset = 0;
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sections.forEach(section => {
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section.chapters.forEach(chapter => {
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const obj = {
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slug: chapter.slug,
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section,
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chapter,
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prev
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};
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lookup.set(chapter.slug, obj);
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if (process.browser) { // pending https://github.com/sveltejs/svelte/issues/2135
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if (prev) prev.next = obj;
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prev = obj;
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}
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});
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});
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// TODO is there a non-hacky way to trigger scroll when chapter changes?
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$: if (scrollable) chapter, scrollable.scrollTo(0, 0);
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// TODO: this will need to be changed to the master branch, and probably should be dynamic instead of included
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// here statically
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const tutorial_repo_link = 'https://github.com/sveltejs/svelte/tree/master/site/content/tutorial';
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$: selected = lookup.get(slug);
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$: improve_link = `${tutorial_repo_link}/${selected.chapter.section_dir}/${selected.chapter.chapter_dir}`;
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const clone = file => ({
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name: file.name,
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type: file.type,
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source: file.source
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});
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$: if (repl) {
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completed = false;
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repl.set({
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components: chapter.app_a.map(clone)
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});
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}
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$: mobile = width < 768;
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function reset() {
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repl.update({
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components: chapter.app_a.map(clone)
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});
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}
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function complete() {
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repl.update({
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components: chapter.app_b.map(clone)
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});
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}
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let completed = false;
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function handle_change(event) {
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completed = event.detail.components.every((file, i) => {
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const expected = chapter.app_b[i];
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return expected && (
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file.name === expected.name &&
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file.type === expected.type &&
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file.source.trim().replace(/\s+$/gm, '') === expected.source.trim().replace(/\s+$/gm, '')
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);
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});
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}
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</script>
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<style>
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.tutorial-outer {
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position: relative;
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height: calc(100vh - var(--nav-h));
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overflow: hidden;
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padding: 0 0 42px 0;
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box-sizing: border-box;
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}
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.viewport {
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display: grid;
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width: 300%;
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height: 100%;
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grid-template-columns: 33.333% 66.666%;
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transition: transform .3s;
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grid-auto-rows: 100%;
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}
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.offset-1 { transform: translate(-33.333%, 0); }
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.offset-2 { transform: translate(-66.666%, 0); }
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@media (min-width: 768px) {
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.tutorial-outer { padding: 0 }
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.viewport {
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width: 100%;
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height: 100%;
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display: grid;
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grid-template-columns: minmax(33.333%, var(--sidebar-large-w)) auto;
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grid-auto-rows: 100%;
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transition: none;
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}
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.offset-1, .offset-2 { transform: none; }
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}
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.tutorial-text {
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display: flex;
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flex-direction: column;
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height: 100%;
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border-right: 1px solid var(--second);
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background-color: var(--second);
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color: var(--sidebar-text);
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}
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.chapter-markup {
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padding: 3.2rem 4rem;
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overflow: auto;
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flex: 1;
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height: 0;
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}
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.chapter-markup :global(h2) {
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margin: 4rem 0 1.6rem 0;
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font-size: var(--h3);
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line-height: 1;
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font-weight: 400;
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color: white;
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}
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.chapter-markup :global(h2:first-child) {
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margin-top: .4rem;
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}
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.chapter-markup :global(a) {
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color: var(--sidebar-text);
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}
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.chapter-markup :global(a:hover) {
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color: white;
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}
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.chapter-markup :global(ul) {
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padding: 0 0 0 2em;
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}
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.chapter-markup :global(blockquote) {
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background-color: rgba(0,0,0,.17);
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color: var(--sidebar-text);
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}
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.chapter-markup::-webkit-scrollbar {
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background-color: var(--second);
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width: 8px;
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}
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.chapter-markup::-webkit-scrollbar-thumb {
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background-color: rgba(255,255,255,.7);
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border-radius: 1em;
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outline: 1px solid green;
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}
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.chapter-markup :global(p) > :global(code),
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.chapter-markup :global(ul) :global(code) {
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color: var(--sidebar-text);
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background: rgba(0,0,0,.12);
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padding: .2em .4em .3em;
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white-space: nowrap;
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position: relative;
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top: -0.1em;
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}
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.controls {
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border-top: 1px solid rgba(255,255,255,.15);
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padding: 1em 0 0 0;
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display: flex;
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}
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.show {
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background: var(--prime);
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padding: .3em .7em;
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border-radius: var(--border-r);
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top: .1em;
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position: relative;
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font-size: var(--h5);
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font-weight: 300;
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box-shadow: 0 0 20px #444;
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color: #fff;
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transition: box-shadow .2s;
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}
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.show:hover {
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box-shadow: 0 0 30px 2px #333;
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}
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a.next {
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padding-right: 1.2em;
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background: no-repeat 100% 50% url(/icons/arrow-right.svg);
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background-size: 1em 1em;
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margin-left: auto;
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}
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.improve-chapter {
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padding: 1em 0 .5em 0;
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}
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.improve-chapter a {
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padding: 0 .1em;
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font-size: 14px;
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text-decoration: none;
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opacity: .3;
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padding-left: 1.2em;
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background: no-repeat 0 50% url(/icons/edit.svg);
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background-size: 1em 1em;
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}
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.improve-chapter a:hover {
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opacity: 1;
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}
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</style>
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<svelte:head>
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<title>{selected.section.title} / {selected.chapter.title} • Svelte Tutorial</title>
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<meta name="twitter:title" content="Svelte tutorial">
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<meta name="twitter:description" content="{selected.section.title} / {selected.chapter.title}">
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<meta name="Description" content="{selected.section.title} / {selected.chapter.title}">
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</svelte:head>
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<svelte:window bind:innerWidth={width}/>
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<div class="tutorial-outer">
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<div class="viewport offset-{offset}">
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<div class="tutorial-text">
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<div class="table-of-contents">
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<TableOfContents {sections} {slug} {selected}/>
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</div>
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<div class="chapter-markup" bind:this={scrollable}>
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{@html chapter.html}
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<div class="controls">
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{#if chapter.app_b}
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<!-- TODO disable this button when the contents of the REPL
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matches the expected end result -->
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<button class="show" on:click="{() => completed ? reset() : complete()}">
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{completed ? 'Reset' : 'Show me'}
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</button>
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{/if}
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{#if selected.next}
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<a class="next" href="tutorial/{selected.next.slug}">Next</a>
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{/if}
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</div>
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<div class="improve-chapter">
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<a class="no-underline" href={improve_link}>Edit this chapter</a>
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</div>
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</div>
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</div>
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<div class="tutorial-repl">
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<Repl
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bind:this={repl}
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workersUrl="workers"
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{svelteUrl}
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{rollupUrl}
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orientation={mobile ? 'columns' : 'rows'}
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fixed={mobile}
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on:change={handle_change}
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injectedJS={mapbox_setup}
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relaxed
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/>
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</div>
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</div>
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{#if mobile}
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<ScreenToggle bind:offset labels={['tutorial', 'input', 'output']}/>
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{/if}
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</div>
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