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385 lines
11 KiB
Svelte
385 lines
11 KiB
Svelte
<script>
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// do not use TS here so that this component works in non-ts projects too
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import { onMount } from 'svelte';
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// eslint-disable-next-line node/no-missing-import
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import options from 'virtual:svelte-inspector-options';
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const toggle_combo = options.toggleKeyCombo?.toLowerCase().split('-');
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const nav_keys = Object.values(options.navKeys).map((k) => k.toLowerCase());
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let enabled = false;
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let hasOpened = false;
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const icon = `data:image/svg+xml;base64,${btoa(
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`
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<svg xmlns="http://www.w3.org/2000/svg" width="21" height="25" viewBox="0 0 107 128">
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<title>svelte-inspector-logo</title>
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<path d="M94.1566,22.8189c-10.4-14.8851-30.94-19.2971-45.7914-9.8348L22.2825,29.6078A29.9234,29.9234,0,0,0,8.7639,49.6506a31.5136,31.5136,0,0,0,3.1076,20.2318A30.0061,30.0061,0,0,0,7.3953,81.0653a31.8886,31.8886,0,0,0,5.4473,24.1157c10.4022,14.8865,30.9423,19.2966,45.7914,9.8348L84.7167,98.3921A29.9177,29.9177,0,0,0,98.2353,78.3493,31.5263,31.5263,0,0,0,95.13,58.117a30,30,0,0,0,4.4743-11.1824,31.88,31.88,0,0,0-5.4473-24.1157" style="fill:#ff3e00"/><path d="M45.8171,106.5815A20.7182,20.7182,0,0,1,23.58,98.3389a19.1739,19.1739,0,0,1-3.2766-14.5025,18.1886,18.1886,0,0,1,.6233-2.4357l.4912-1.4978,1.3363.9815a33.6443,33.6443,0,0,0,10.203,5.0978l.9694.2941-.0893.9675a5.8474,5.8474,0,0,0,1.052,3.8781,6.2389,6.2389,0,0,0,6.6952,2.485,5.7449,5.7449,0,0,0,1.6021-.7041L69.27,76.281a5.4306,5.4306,0,0,0,2.4506-3.631,5.7948,5.7948,0,0,0-.9875-4.3712,6.2436,6.2436,0,0,0-6.6978-2.4864,5.7427,5.7427,0,0,0-1.6.7036l-9.9532,6.3449a19.0329,19.0329,0,0,1-5.2965,2.3259,20.7181,20.7181,0,0,1-22.2368-8.2427,19.1725,19.1725,0,0,1-3.2766-14.5024,17.9885,17.9885,0,0,1,8.13-12.0513L55.8833,23.7472a19.0038,19.0038,0,0,1,5.3-2.3287A20.7182,20.7182,0,0,1,83.42,29.6611a19.1739,19.1739,0,0,1,3.2766,14.5025,18.4,18.4,0,0,1-.6233,2.4357l-.4912,1.4978-1.3356-.98a33.6175,33.6175,0,0,0-10.2037-5.1l-.9694-.2942.0893-.9675a5.8588,5.8588,0,0,0-1.052-3.878,6.2389,6.2389,0,0,0-6.6952-2.485,5.7449,5.7449,0,0,0-1.6021.7041L37.73,51.719a5.4218,5.4218,0,0,0-2.4487,3.63,5.7862,5.7862,0,0,0,.9856,4.3717,6.2437,6.2437,0,0,0,6.6978,2.4864,5.7652,5.7652,0,0,0,1.602-.7041l9.9519-6.3425a18.978,18.978,0,0,1,5.2959-2.3278,20.7181,20.7181,0,0,1,22.2368,8.2427,19.1725,19.1725,0,0,1,3.2766,14.5024,17.9977,17.9977,0,0,1-8.13,12.0532L51.1167,104.2528a19.0038,19.0038,0,0,1-5.3,2.3287" style="fill:#fff"/>
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<polygon points="0,0 15,40 40,20" stroke="#ff3e00" fill="#ff3e00"></polygon>
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</svg>
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`
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.replace(/[\n\r\t\s]+/g, ' ')
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.trim()
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)}`;
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// location of code in file
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let file_loc;
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// cursor pos and width for file_loc overlay positioning
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let x, y, w;
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let active_el;
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let enabled_ts;
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$: show_toggle =
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options.showToggleButton === 'always' || (options.showToggleButton === 'active' && enabled);
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function mousemove(event) {
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x = event.x;
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y = event.y;
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}
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function find_selectable_parent(el, include_self = false) {
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if (!include_self) {
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el = el.parentNode;
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}
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while (el) {
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if (is_selectable(el)) {
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return el;
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}
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el = el.parentNode;
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}
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}
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function find_selectable_child(el) {
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return [...el.querySelectorAll('*')].find(is_selectable);
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}
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function find_selectable_sibling(el, prev = false) {
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do {
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el = prev ? el.previousElementSibling : el.nextElementSibling;
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if (is_selectable(el)) {
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return el;
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}
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} while (el);
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}
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function find_selectable_for_nav(key) {
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const el = active_el;
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if (!el) {
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return find_selectable_child(document?.body);
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}
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switch (key) {
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case options.navKeys.parent:
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return find_selectable_parent(el);
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case options.navKeys.child:
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return find_selectable_child(el);
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case options.navKeys.next:
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return find_selectable_sibling(el) || find_selectable_parent(el);
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case options.navKeys.prev:
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return find_selectable_sibling(el, true) || find_selectable_parent(el);
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default:
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return;
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}
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}
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function is_selectable(el) {
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const file = el?.__svelte_meta?.loc?.file;
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if (!file || file.includes('node_modules/')) {
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return false; // no file or 3rd party
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}
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const id = el.getAttribute('id');
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if (id === 'svelte-announcer' || id?.startsWith('svelte-inspector-')) {
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return false; // ignore some elements by id that would be selectable from keyboard nav otherwise
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}
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return true;
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}
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function mouseover({ target }) {
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const el = find_selectable_parent(target, true);
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activate(el, false);
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}
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function activate(el, set_bubble_pos = true) {
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if (options.customStyles && el !== active_el) {
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if (active_el) {
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active_el.classList.remove('svelte-inspector-active-target');
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}
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if (el) {
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el.classList.add('svelte-inspector-active-target');
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}
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}
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if (el) {
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const { file, line, column } = el.__svelte_meta.loc;
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file_loc = `${file}:${line + 1}:${column + 1}`;
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} else {
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file_loc = null;
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}
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active_el = el;
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if (set_bubble_pos) {
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const pos = el.getBoundingClientRect();
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x = Math.ceil(pos.left);
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y = Math.ceil(pos.bottom - 20);
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}
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}
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function open_editor(event) {
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if (file_loc) {
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stop(event);
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fetch(`${options.__internal.base}/__open-in-editor?file=${encodeURIComponent(file_loc)}`);
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hasOpened = true;
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if (options.holdMode && is_holding()) {
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disable();
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}
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}
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}
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function is_key_active(key, event) {
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switch (key) {
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case 'shift':
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case 'control':
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case 'alt':
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case 'meta':
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return event.getModifierState(key.charAt(0).toUpperCase() + key.slice(1));
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default:
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return key === event.key.toLowerCase();
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}
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}
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function is_combo(event) {
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return toggle_combo?.every((key) => is_key_active(key, event));
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}
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function is_nav(event) {
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return nav_keys?.some((key) => is_key_active(key, event));
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}
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function is_open(event) {
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return options.openKey && options.openKey.toLowerCase() === event.key.toLowerCase();
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}
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function is_holding() {
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return enabled_ts && Date.now() - enabled_ts > 250;
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}
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function stop(event) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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}
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function keydown(event) {
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if (event.repeat || event.key == null) {
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return;
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}
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if (is_combo(event)) {
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toggle();
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if (options.holdMode && enabled) {
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enabled_ts = Date.now();
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}
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} else if (enabled) {
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if (is_nav(event)) {
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const el = find_selectable_for_nav(event.key);
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if (el) {
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activate(el);
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stop(event);
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}
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} else if (is_open(event)) {
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open_editor(event);
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}
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}
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}
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function keyup(event) {
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if (event.repeat || event.key == null) {
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return;
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}
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const k = event.key.toLowerCase();
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if (enabled && is_holding() && toggle_combo.includes(k)) {
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disable();
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} else {
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enabled_ts = null;
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}
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}
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function toggle() {
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enabled ? disable() : enable();
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}
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function listeners(body, enabled) {
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const l = enabled ? body.addEventListener : body.removeEventListener;
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l('mousemove', mousemove);
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l('mouseover', mouseover);
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l('click', open_editor, true);
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}
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function enable() {
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enabled = true;
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const b = document.body;
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if (options.customStyles) {
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b.classList.add('svelte-inspector-enabled');
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}
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listeners(b, enabled);
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activate_initial_el();
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}
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function activate_initial_el() {
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const hov = innermost_hover_el();
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let el = find_selectable_parent(hov, true);
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if (!el) {
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const act = document.activeElement;
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el = find_selectable_parent(act, true);
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}
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if (!el) {
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el = find_selectable_child(document.body);
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}
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if (el) {
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activate(el);
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}
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}
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function innermost_hover_el() {
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let e = document.body.querySelector(':hover');
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let result;
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while (e) {
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result = e;
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e = e.querySelector(':hover');
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}
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return result;
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}
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function disable() {
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enabled = false;
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hasOpened = false;
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enabled_ts = null;
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const b = document.body;
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listeners(b, enabled);
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if (options.customStyles) {
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b.classList.remove('svelte-inspector-enabled');
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active_el?.classList.remove('svelte-inspector-active-target');
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}
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active_el = null;
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}
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function visibilityChange() {
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if (document.visibilityState === 'hidden') {
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onLeave();
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}
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}
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function onLeave() {
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if (hasOpened) {
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disable();
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}
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}
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onMount(() => {
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const s = document.createElement('style');
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s.setAttribute('type', 'text/css');
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s.setAttribute('id', 'svelte-inspector-style');
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s.textContent = `:root { --svelte-inspector-icon: url(${icon})};`;
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document.head.append(s);
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if (toggle_combo) {
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document.body.addEventListener('keydown', keydown);
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if (options.holdMode) {
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document.body.addEventListener('keyup', keyup);
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}
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}
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document.addEventListener('visibilitychange', visibilityChange);
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document.documentElement.addEventListener('mouseleave', onLeave);
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return () => {
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// make sure we get rid of everything
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disable();
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const s = document.head.querySelector('#svelte-inspector-style');
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if (s) {
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document.head.removeChild(s);
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}
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if (toggle_combo) {
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document.body.removeEventListener('keydown', keydown);
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if (options.holdMode) {
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document.body.removeEventListener('keyup', keyup);
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}
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}
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document.removeEventListener('visibilitychange', visibilityChange);
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document.documentElement.removeEventListener('mouseleave', onLeave);
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};
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});
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</script>
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{#if show_toggle}
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<button
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id="svelte-inspector-toggle"
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class:enabled
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style={`background-image: var(--svelte-inspector-icon);${options.toggleButtonPos
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.split('-')
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.map((p) => `${p}: 8px;`)
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.join('')}`}
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on:click={() => toggle()}
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aria-label={`${enabled ? 'disable' : 'enable'} svelte-inspector`}
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/>
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{/if}
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{#if enabled && active_el && file_loc}
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{@const loc = active_el.__svelte_meta.loc}
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<div
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id="svelte-inspector-overlay"
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style:left="{Math.min(x + 3, document.documentElement.clientWidth - w - 10)}px"
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style:top="{document.documentElement.clientHeight < y + 50 ? y - 30 : y + 30}px"
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bind:offsetWidth={w}
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>
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<{active_el.tagName.toLowerCase()}> {file_loc}
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</div>
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<div id="svelte-inspector-announcer" aria-live="assertive" aria-atomic="true">
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{active_el.tagName.toLowerCase()} in file {loc.file} on line {loc.line} column {loc.column}
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</div>
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{/if}
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<style>
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:global(body.svelte-inspector-enabled *) {
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cursor: var(--svelte-inspector-icon), crosshair !important;
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}
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:global(.svelte-inspector-active-target) {
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outline: 2px dashed #ff3e00 !important;
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}
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#svelte-inspector-overlay {
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position: fixed;
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background-color: rgba(0, 0, 0, 0.8);
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color: #fff;
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padding: 2px 4px;
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border-radius: 5px;
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z-index: 999999;
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pointer-events: none;
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}
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#svelte-inspector-toggle {
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all: unset;
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border: 1px solid #ff3e00;
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border-radius: 8px;
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position: fixed;
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height: 32px;
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width: 32px;
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background-color: white;
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background-position: center;
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background-repeat: no-repeat;
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cursor: pointer;
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}
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#svelte-inspector-announcer {
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position: absolute;
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left: 0px;
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top: 0px;
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clip: rect(0px, 0px, 0px, 0px);
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clip-path: inset(50%);
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overflow: hidden;
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white-space: nowrap;
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width: 1px;
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height: 1px;
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}
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#svelte-inspector-toggle:not(.enabled) {
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filter: grayscale(1);
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}
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#svelte-inspector-toggle:hover {
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background-color: #facece;
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}
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</style>
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