mirror of https://github.com/sveltejs/svelte
move element code (#10778)
* move element code * eslint nonsense --------- Co-authored-by: Rich Harris <rich.harris@vercel.com>pull/10770/head
Rich Harris
10 months ago
committed by
GitHub
parent
84fa18a850
commit
de021aebb5
@ -0,0 +1,363 @@
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import { DEV } from 'esm-env';
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import { hydrating } from '../../hydration.js';
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import { render_effect } from '../../reactivity/effects.js';
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import { get_descriptors, object_assign } from '../../utils.js';
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import { map_get, map_set } from '../../operations.js';
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import { AttributeAliases, DelegatedEvents, namespace_svg } from '../../../../constants.js';
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import { delegate } from './events.js';
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import { autofocus } from './misc.js';
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/**
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* The value/checked attribute in the template actually corresponds to the defaultValue property, so we need
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* to remove it upon hydration to avoid a bug when someone resets the form value.
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* @param {HTMLInputElement | HTMLSelectElement} dom
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* @returns {void}
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*/
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export function remove_input_attr_defaults(dom) {
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if (hydrating) {
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attr(dom, 'value', null);
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attr(dom, 'checked', null);
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}
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}
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/**
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* @param {Element} dom
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* @param {string} attribute
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* @param {() => string} value
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*/
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export function attr_effect(dom, attribute, value) {
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render_effect(() => {
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attr(dom, attribute, value());
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});
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}
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/**
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* @param {Element} dom
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* @param {string} attribute
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* @param {string | null} value
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*/
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export function attr(dom, attribute, value) {
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value = value == null ? null : value + '';
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if (DEV) {
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check_src_in_dev_hydration(dom, attribute, value);
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}
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if (
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!hydrating ||
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(dom.getAttribute(attribute) !== value &&
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// If we reset those, they would result in another network request, which we want to avoid.
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// We assume they are the same between client and server as checking if they are equal is expensive
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// (we can't just compare the strings as they can be different between client and server but result in the
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// same url, so we would need to create hidden anchor elements to compare them)
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attribute !== 'src' &&
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attribute !== 'href' &&
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attribute !== 'srcset')
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) {
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if (value === null) {
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dom.removeAttribute(attribute);
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} else {
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dom.setAttribute(attribute, value);
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}
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}
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}
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/**
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* @param {Element} dom
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* @param {string} attribute
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* @param {() => string} value
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*/
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export function xlink_attr_effect(dom, attribute, value) {
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render_effect(() => {
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xlink_attr(dom, attribute, value());
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});
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}
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/**
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* @param {Element} dom
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* @param {string} attribute
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* @param {string} value
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*/
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export function xlink_attr(dom, attribute, value) {
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dom.setAttributeNS('http://www.w3.org/1999/xlink', attribute, value);
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}
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/**
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* @param {any} node
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* @param {string} prop
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* @param {() => any} value
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*/
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export function set_custom_element_data_effect(node, prop, value) {
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render_effect(() => {
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set_custom_element_data(node, prop, value());
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});
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}
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/**
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* @param {any} node
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* @param {string} prop
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* @param {any} value
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*/
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export function set_custom_element_data(node, prop, value) {
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if (prop in node) {
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node[prop] = typeof node[prop] === 'boolean' && value === '' ? true : value;
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} else {
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attr(node, prop, value);
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}
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}
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/**
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* Like `spread_attributes` but self-contained
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* @param {Element & ElementCSSInlineStyle} dom
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* @param {() => Record<string, unknown>[]} attrs
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* @param {boolean} lowercase_attributes
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* @param {string} css_hash
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*/
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export function spread_attributes_effect(dom, attrs, lowercase_attributes, css_hash) {
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/** @type {Record<string, any> | undefined} */
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var current;
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render_effect(() => {
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current = spread_attributes(dom, current, attrs(), lowercase_attributes, css_hash);
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});
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}
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/**
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* Spreads attributes onto a DOM element, taking into account the currently set attributes
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* @param {Element & ElementCSSInlineStyle} dom
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* @param {Record<string, unknown> | undefined} prev
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* @param {Record<string, unknown>[]} attrs
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* @param {boolean} lowercase_attributes
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* @param {string} css_hash
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* @returns {Record<string, unknown>}
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*/
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export function spread_attributes(dom, prev, attrs, lowercase_attributes, css_hash) {
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var next = object_assign({}, ...attrs);
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var has_hash = css_hash.length !== 0;
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for (var key in prev) {
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if (!(key in next)) {
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next[key] = null;
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}
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}
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if (has_hash && !next.class) {
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next.class = '';
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}
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var setters = map_get(setters_cache, dom.nodeName);
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if (!setters) map_set(setters_cache, dom.nodeName, (setters = get_setters(dom)));
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for (key in next) {
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var value = next[key];
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if (value === prev?.[key]) continue;
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var prefix = key[0] + key[1]; // this is faster than key.slice(0, 2)
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if (prefix === '$$') continue;
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if (prefix === 'on') {
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/** @type {{ capture?: true }} */
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var opts = {};
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var event_name = key.slice(2);
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var delegated = DelegatedEvents.includes(event_name);
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if (
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event_name.endsWith('capture') &&
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event_name !== 'ongotpointercapture' &&
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event_name !== 'onlostpointercapture'
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) {
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event_name = event_name.slice(0, -7);
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opts.capture = true;
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}
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if (!delegated && prev?.[key]) {
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dom.removeEventListener(event_name, /** @type {any} */ (prev[key]), opts);
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}
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if (value != null) {
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if (!delegated) {
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dom.addEventListener(event_name, value, opts);
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} else {
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// @ts-ignore
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dom[`__${event_name}`] = value;
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delegate([event_name]);
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}
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}
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} else if (value == null) {
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dom.removeAttribute(key);
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} else if (key === 'style') {
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dom.style.cssText = value + '';
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} else if (key === 'autofocus') {
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autofocus(/** @type {HTMLElement} */ (dom), Boolean(value));
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} else if (key === '__value' || key === 'value') {
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// @ts-ignore
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dom.value = dom[key] = dom.__value = value;
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} else {
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var name = key;
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if (lowercase_attributes) {
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name = name.toLowerCase();
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name = AttributeAliases[name] || name;
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}
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if (setters.includes(name)) {
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if (DEV) {
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check_src_in_dev_hydration(dom, name, value);
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}
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if (
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!hydrating ||
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// @ts-ignore see attr method for an explanation of src/srcset
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(dom[name] !== value && name !== 'src' && name !== 'href' && name !== 'srcset')
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) {
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// @ts-ignore
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dom[name] = value;
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}
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} else if (typeof value !== 'function') {
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if (has_hash && name === 'class') {
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if (value) value += ' ';
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value += css_hash;
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}
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attr(dom, name, value);
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}
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}
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}
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return next;
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}
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/**
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* @param {Element} node
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* @param {() => Record<string, unknown>[]} attrs
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* @param {string} css_hash
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*/
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export function spread_dynamic_element_attributes_effect(node, attrs, css_hash) {
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/** @type {Record<string, any> | undefined} */
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var current;
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render_effect(() => {
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current = spread_dynamic_element_attributes(node, current, attrs(), css_hash);
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});
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}
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/**
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* @param {Element} node
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* @param {Record<string, unknown> | undefined} prev
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* @param {Record<string, unknown>[]} attrs
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* @param {string} css_hash
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*/
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export function spread_dynamic_element_attributes(node, prev, attrs, css_hash) {
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if (node.tagName.includes('-')) {
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var next = object_assign({}, ...attrs);
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for (var key in prev) {
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if (!(key in next)) {
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next[key] = null;
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}
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}
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for (key in next) {
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set_custom_element_data(node, key, next[key]);
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}
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return next;
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} else {
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return spread_attributes(
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/** @type {Element & ElementCSSInlineStyle} */ (node),
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prev,
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attrs,
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node.namespaceURI !== namespace_svg,
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css_hash
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);
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}
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}
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/**
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* List of attributes that should always be set through the attr method,
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* because updating them through the property setter doesn't work reliably.
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* In the example of `width`/`height`, the problem is that the setter only
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* accepts numeric values, but the attribute can also be set to a string like `50%`.
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* If this list becomes too big, rethink this approach.
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*/
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var always_set_through_set_attribute = ['width', 'height'];
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/** @type {Map<string, string[]>} */
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var setters_cache = new Map();
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/** @param {Element} element */
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function get_setters(element) {
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/** @type {string[]} */
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var setters = [];
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// @ts-expect-error
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var descriptors = get_descriptors(element.__proto__);
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for (var key in descriptors) {
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if (descriptors[key].set && !always_set_through_set_attribute.includes(key)) {
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setters.push(key);
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}
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}
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return setters;
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}
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/**
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* @param {any} dom
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* @param {string} attribute
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* @param {string | null} value
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*/
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function check_src_in_dev_hydration(dom, attribute, value) {
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if (!hydrating) return;
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if (attribute !== 'src' && attribute !== 'href' && attribute !== 'srcset') return;
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if (attribute === 'srcset' && srcset_url_equal(dom, value)) return;
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if (src_url_equal(dom.getAttribute(attribute) ?? '', value ?? '')) return;
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// eslint-disable-next-line no-console
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console.error(
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`Detected a ${attribute} attribute value change during hydration. This will not be repaired during hydration, ` +
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`the ${attribute} value that came from the server will be used. Related element:`,
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dom,
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' Differing value:',
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value
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);
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}
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/**
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* @param {string} element_src
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* @param {string} url
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* @returns {boolean}
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*/
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function src_url_equal(element_src, url) {
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if (element_src === url) return true;
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return new URL(element_src, document.baseURI).href === new URL(url, document.baseURI).href;
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}
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/** @param {string} srcset */
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function split_srcset(srcset) {
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return srcset.split(',').map((src) => src.trim().split(' ').filter(Boolean));
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}
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/**
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* @param {HTMLSourceElement | HTMLImageElement} element
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* @param {string | undefined | null} srcset
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* @returns {boolean}
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*/
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export function srcset_url_equal(element, srcset) {
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var element_urls = split_srcset(element.srcset);
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var urls = split_srcset(srcset ?? '');
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return (
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urls.length === element_urls.length &&
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urls.every(
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([url, width], i) =>
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width === element_urls[i][1] &&
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// We need to test both ways because Vite will create an a full URL with
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// `new URL(asset, import.meta.url).href` for the client when `base: './'`, and the
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// relative URLs inside srcset are not automatically resolved to absolute URLs by
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// browsers (in contrast to img.src). This means both SSR and DOM code could
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// contain relative or absolute URLs.
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(src_url_equal(element_urls[i][0], url) || src_url_equal(url, element_urls[i][0]))
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)
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);
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}
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@ -0,0 +1,78 @@
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import { hydrating } from '../../hydration.js';
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import { set_class_name } from '../../operations.js';
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import { render_effect } from '../../reactivity/effects.js';
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/**
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* @param {Element} dom
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* @param {() => string} value
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* @returns {void}
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*/
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export function class_name_effect(dom, value) {
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render_effect(() => {
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class_name(dom, value());
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});
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}
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/**
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* @param {Element} dom
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* @param {string} value
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* @returns {void}
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*/
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export function class_name(dom, value) {
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// @ts-expect-error need to add __className to patched prototype
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var prev_class_name = dom.__className;
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var next_class_name = to_class(value);
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if (hydrating && dom.className === next_class_name) {
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// In case of hydration don't reset the class as it's already correct.
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// @ts-expect-error need to add __className to patched prototype
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dom.__className = next_class_name;
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} else if (
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prev_class_name !== next_class_name ||
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(hydrating && dom.className !== next_class_name)
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) {
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if (next_class_name === '') {
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dom.removeAttribute('class');
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} else {
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set_class_name(dom, next_class_name);
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}
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// @ts-expect-error need to add __className to patched prototype
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dom.__className = next_class_name;
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}
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}
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/**
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* @template V
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* @param {V} value
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* @returns {string | V}
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*/
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export function to_class(value) {
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return value == null ? '' : value;
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}
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/**
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* @param {Element} dom
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* @param {string} class_name
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* @param {boolean} value
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* @returns {void}
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*/
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export function class_toggle(dom, class_name, value) {
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if (value) {
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dom.classList.add(class_name);
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} else {
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dom.classList.remove(class_name);
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}
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}
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/**
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* @param {Element} dom
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* @param {string} class_name
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* @param {() => boolean} value
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* @returns {void}
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*/
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export function class_toggle_effect(dom, class_name, value) {
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render_effect(() => {
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class_toggle(dom, class_name, value());
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});
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}
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@ -0,0 +1,154 @@
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import { render_effect } from '../../reactivity/effects.js';
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import { all_registered_events, root_event_handles } from '../../render.js';
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import { define_property, is_array } from '../../utils.js';
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/**
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* @param {string} event_name
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* @param {Element} dom
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* @param {EventListener} handler
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* @param {boolean} capture
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* @param {boolean} [passive]
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* @returns {void}
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*/
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export function event(event_name, dom, handler, capture, passive) {
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var options = { capture, passive };
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/**
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* @this {EventTarget}
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*/
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function target_handler(/** @type {Event} */ event) {
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handle_event_propagation(dom, event);
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if (!event.cancelBubble) {
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return handler.call(this, event);
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}
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}
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dom.addEventListener(event_name, target_handler, options);
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// @ts-ignore
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if (dom === document.body || dom === window || dom === document) {
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render_effect(() => {
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return () => {
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dom.removeEventListener(event_name, target_handler, options);
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};
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});
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}
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}
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/**
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* @param {Array<string>} events
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* @returns {void}
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*/
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export function delegate(events) {
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for (var i = 0; i < events.length; i++) {
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all_registered_events.add(events[i]);
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}
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for (var fn of root_event_handles) {
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fn(events);
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}
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}
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/**
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* @param {Node} handler_element
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* @param {Event} event
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* @returns {void}
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*/
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export function handle_event_propagation(handler_element, event) {
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var owner_document = handler_element.ownerDocument;
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var event_name = event.type;
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var path = event.composedPath?.() || [];
|
||||
var current_target = /** @type {null | Element} */ (path[0] || event.target);
|
||||
|
||||
if (event.target !== current_target) {
|
||||
define_property(event, 'target', {
|
||||
configurable: true,
|
||||
value: current_target
|
||||
});
|
||||
}
|
||||
|
||||
// composedPath contains list of nodes the event has propagated through.
|
||||
// We check __root to skip all nodes below it in case this is a
|
||||
// parent of the __root node, which indicates that there's nested
|
||||
// mounted apps. In this case we don't want to trigger events multiple times.
|
||||
var path_idx = 0;
|
||||
|
||||
// @ts-expect-error is added below
|
||||
var handled_at = event.__root;
|
||||
|
||||
if (handled_at) {
|
||||
var at_idx = path.indexOf(handled_at);
|
||||
if (
|
||||
at_idx !== -1 &&
|
||||
(handler_element === document || handler_element === /** @type {any} */ (window))
|
||||
) {
|
||||
// This is the fallback document listener or a window listener, but the event was already handled
|
||||
// -> ignore, but set handle_at to document/window so that we're resetting the event
|
||||
// chain in case someone manually dispatches the same event object again.
|
||||
// @ts-expect-error
|
||||
event.__root = handler_element;
|
||||
return;
|
||||
}
|
||||
|
||||
// We're deliberately not skipping if the index is higher, because
|
||||
// someone could create an event programmatically and emit it multiple times,
|
||||
// in which case we want to handle the whole propagation chain properly each time.
|
||||
// (this will only be a false negative if the event is dispatched multiple times and
|
||||
// the fallback document listener isn't reached in between, but that's super rare)
|
||||
var handler_idx = path.indexOf(handler_element);
|
||||
if (handler_idx === -1) {
|
||||
// handle_idx can theoretically be -1 (happened in some JSDOM testing scenarios with an event listener on the window object)
|
||||
// so guard against that, too, and assume that everything was handled at this point.
|
||||
return;
|
||||
}
|
||||
|
||||
if (at_idx <= handler_idx) {
|
||||
// +1 because at_idx is the element which was already handled, and there can only be one delegated event per element.
|
||||
// Avoids on:click and onclick on the same event resulting in onclick being fired twice.
|
||||
path_idx = at_idx + 1;
|
||||
}
|
||||
}
|
||||
|
||||
current_target = /** @type {Element} */ (path[path_idx] || event.target);
|
||||
|
||||
// Proxy currentTarget to correct target
|
||||
define_property(event, 'currentTarget', {
|
||||
configurable: true,
|
||||
get() {
|
||||
return current_target || owner_document;
|
||||
}
|
||||
});
|
||||
|
||||
while (current_target !== null) {
|
||||
/** @type {null | Element} */
|
||||
var parent_element =
|
||||
current_target.parentNode || /** @type {any} */ (current_target).host || null;
|
||||
var internal_prop_name = '__' + event_name;
|
||||
// @ts-ignore
|
||||
var delegated = current_target[internal_prop_name];
|
||||
|
||||
if (delegated !== undefined && !(/** @type {any} */ (current_target).disabled)) {
|
||||
if (is_array(delegated)) {
|
||||
var [fn, ...data] = delegated;
|
||||
fn.apply(current_target, [event, ...data]);
|
||||
} else {
|
||||
delegated.call(current_target, event);
|
||||
}
|
||||
}
|
||||
|
||||
if (
|
||||
event.cancelBubble ||
|
||||
parent_element === handler_element ||
|
||||
current_target === handler_element
|
||||
) {
|
||||
break;
|
||||
}
|
||||
|
||||
current_target = parent_element;
|
||||
}
|
||||
|
||||
// @ts-expect-error is used above
|
||||
event.__root = handler_element;
|
||||
// @ts-expect-error is used above
|
||||
current_target = handler_element;
|
||||
}
|
||||
@ -0,0 +1,37 @@
|
||||
import { hydrating } from '../../hydration.js';
|
||||
import { render_effect } from '../../reactivity/effects.js';
|
||||
import { current_block } from '../../runtime.js';
|
||||
|
||||
/**
|
||||
* @param {HTMLElement} dom
|
||||
* @param {boolean} value
|
||||
* @returns {void}
|
||||
*/
|
||||
export function autofocus(dom, value) {
|
||||
if (value) {
|
||||
const body = document.body;
|
||||
dom.autofocus = true;
|
||||
render_effect(
|
||||
() => {
|
||||
if (document.activeElement === body) {
|
||||
dom.focus();
|
||||
}
|
||||
},
|
||||
current_block,
|
||||
true,
|
||||
false
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* The child of a textarea actually corresponds to the defaultValue property, so we need
|
||||
* to remove it upon hydration to avoid a bug when someone resets the form value.
|
||||
* @param {HTMLTextAreaElement} dom
|
||||
* @returns {void}
|
||||
*/
|
||||
export function remove_textarea_child(dom) {
|
||||
if (hydrating && dom.firstChild !== null) {
|
||||
dom.textContent = '';
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,33 @@
|
||||
import { render_effect } from '../../reactivity/effects.js';
|
||||
|
||||
/**
|
||||
* @param {HTMLElement} dom
|
||||
* @param {string} key
|
||||
* @param {string} value
|
||||
* @param {boolean} [important]
|
||||
*/
|
||||
export function style(dom, key, value, important) {
|
||||
const style = dom.style;
|
||||
const prev_value = style.getPropertyValue(key);
|
||||
if (value == null) {
|
||||
if (prev_value !== '') {
|
||||
style.removeProperty(key);
|
||||
}
|
||||
} else if (prev_value !== value) {
|
||||
style.setProperty(key, value, important ? 'important' : '');
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {HTMLElement} dom
|
||||
* @param {string} key
|
||||
* @param {() => string} value
|
||||
* @param {boolean} [important]
|
||||
* @returns {void}
|
||||
*/
|
||||
export function style_effect(dom, key, value, important) {
|
||||
render_effect(() => {
|
||||
const string = value();
|
||||
style(dom, key, string, important);
|
||||
});
|
||||
}
|
||||
Loading…
Reference in new issue