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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x | import { namespace_svg } from '../../../../constants.js';
import { hydrate_anchor, hydrate_nodes, hydrating } from '../hydration.js';
import { empty } from '../operations.js';
import { render_effect } from '../../reactivity/effects.js';
import { remove } from '../reconciler.js';
/**
* @param {Element | Text | Comment} anchor
* @param {boolean} is_html
* @param {() => Record<string, string>} props
* @param {(anchor: Element | Text | Comment) => any} component
* @returns {void}
*/
export function css_props(anchor, is_html, props, component) {
/** @type {HTMLElement | SVGElement} */
let element;
/** @type {Text | Comment} */
let component_anchor;
if (hydrating) {
// Hydration: css props element is surrounded by a ssr comment ...
element = /** @type {HTMLElement | SVGElement} */ (hydrate_nodes[0]);
// ... and the child(ren) of the css props element is also surround by a ssr comment
component_anchor = /** @type {Comment} */ (
hydrate_anchor(/** @type {Comment} */ (element.firstChild))
);
} else {
if (is_html) {
element = document.createElement('div');
element.style.display = 'contents';
} else {
element = document.createElementNS(namespace_svg, 'g');
}
anchor.before(element);
component_anchor = element.appendChild(empty());
}
component(component_anchor);
render_effect(() => {
/** @type {Record<string, string>} */
let current_props = {};
render_effect(() => {
const next_props = props();
for (const key in current_props) {
if (!(key in next_props)) {
element.style.removeProperty(key);
}
}
for (const key in next_props) {
element.style.setProperty(key, next_props[key]);
}
current_props = next_props;
});
return () => {
remove(element);
};
});
}
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