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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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 62x 62x 62x 62x 62x 121x 56x 56x 56x 121x 62x 62x 2x 2x 2x 2x 2x 2x 2x 2x 2x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 133x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 205x 197x 205x 205x 205x 66x 8x 8x 8x 8x 8x 8x 66x 58x 58x 58x 58x 58x 66x 205x 205x 191x 191x 191x 191x 191x 130x 191x 191x 191x 171x 171x 171x 171x 171x 171x 171x 166x 166x 166x 166x 166x 166x 171x 191x 191x 191x 191x 62x 62x 62x 191x 191x 205x 205x 205x 205x 205x 205x 133x 133x 133x 122x 133x 133x 133x | import { namespace_svg } from '../../../../constants.js';
import { hydrate_anchor, hydrate_nodes, hydrating } from '../hydration.js';
import { empty } from '../operations.js';
import {
block,
branch,
destroy_effect,
pause_effect,
render_effect,
resume_effect
} from '../../reactivity/effects.js';
import { is_array } from '../../utils.js';
import { set_should_intro } from '../../render.js';
import { current_each_item, set_current_each_item } from './each.js';
import { current_effect } from '../../runtime.js';
/**
* @param {import('#client').Effect} effect
* @param {Element} from
* @param {Element} to
* @returns {void}
*/
function swap_block_dom(effect, from, to) {
const dom = effect.dom;
if (is_array(dom)) {
for (let i = 0; i < dom.length; i++) {
if (dom[i] === from) {
dom[i] = to;
break;
}
}
} else if (dom === from) {
effect.dom = to;
}
}
/**
* @param {Comment} anchor
* @param {() => string} get_tag
* @param {boolean | null} is_svg `null` == not statically known
* @param {undefined | ((element: Element, anchor: Node) => void)} render_fn
* @returns {void}
*/
export function element(anchor, get_tag, is_svg, render_fn) {
const parent_effect = /** @type {import('#client').Effect} */ (current_effect);
render_effect(() => {
/** @type {string | null} */
let tag;
/** @type {string | null} */
let current_tag;
/** @type {null | Element} */
let element = null;
/** @type {import('#client').Effect | null} */
let effect;
/**
* The keyed `{#each ...}` item block, if any, that this element is inside.
* We track this so we can set it when changing the element, allowing any
* `animate:` directive to bind itself to the correct block
*/
let each_item_block = current_each_item;
block(() => {
const next_tag = get_tag() || null;
if (next_tag === tag) return;
// See explanation of `each_item_block` above
var previous_each_item = current_each_item;
set_current_each_item(each_item_block);
// We try our best infering the namespace in case it's not possible to determine statically,
// but on the first render on the client (without hydration) the parent will be undefined,
// since the anchor is not attached to its parent / the dom yet.
const ns =
is_svg || next_tag === 'svg'
? namespace_svg
: is_svg === false || anchor.parentElement?.tagName === 'foreignObject'
? null
: anchor.parentElement?.namespaceURI ?? null;
if (effect) {
if (next_tag === null) {
// start outro
pause_effect(effect, () => {
effect = null;
current_tag = null;
element?.remove();
});
} else if (next_tag === current_tag) {
// same tag as is currently rendered — abort outro
resume_effect(effect);
} else {
// tag is changing — destroy immediately, render contents without intro transitions
destroy_effect(effect);
set_should_intro(false);
}
}
if (next_tag && next_tag !== current_tag) {
effect = branch(() => {
const prev_element = element;
element = hydrating
? /** @type {Element} */ (hydrate_nodes[0])
: ns
? document.createElementNS(ns, next_tag)
: document.createElement(next_tag);
if (render_fn) {
// If hydrating, use the existing ssr comment as the anchor so that the
// inner open and close methods can pick up the existing nodes correctly
var child_anchor = hydrating
? element.firstChild && hydrate_anchor(/** @type {Comment} */ (element.firstChild))
: element.appendChild(empty());
if (child_anchor) {
// `child_anchor` can be undefined if this is a void element with children,
// i.e. `<svelte:element this={"hr"}>...</svelte:element>`. This is
// user error, but we warn on it elsewhere (in dev) so here we just
// silently ignore it
render_fn(element, child_anchor);
}
}
anchor.before(element);
if (prev_element) {
swap_block_dom(parent_effect, prev_element, element);
prev_element.remove();
}
});
}
tag = next_tag;
if (tag) current_tag = tag;
set_should_intro(true);
set_current_each_item(previous_each_item);
});
return () => {
element?.remove();
};
});
}
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