Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 795x 1638x 1406x 1406x 1406x 1406x 1638x 370x 370x 370x 1x 1x 1x 1x 1x 1x 370x 1406x 1638x 736x 34x 736x 702x 702x 665x 736x 52x 52x 52x 52x 1638x 670x 670x 194x 194x 670x 670x 276x 234x 276x 276x 670x 1335x 1638x 1x 1x 1x 795x 795x | import { EFFECT_TRANSPARENT } from '../../constants.js';
import { hydrate_nodes, hydrating, set_hydrating } from '../hydration.js';
import { remove } from '../reconciler.js';
import { block, branch, pause_effect, resume_effect } from '../../reactivity/effects.js';
import { HYDRATION_END_ELSE } from '../../../../constants.js';
/**
* @param {Comment} anchor
* @param {() => boolean} get_condition
* @param {(anchor: Node) => import('#client').Dom} consequent_fn
* @param {null | ((anchor: Node) => import('#client').Dom)} [alternate_fn]
* @param {boolean} [elseif] True if this is an `{:else if ...}` block rather than an `{#if ...}`, as that affects which transitions are considered 'local'
* @returns {void}
*/
export function if_block(
anchor,
get_condition,
consequent_fn,
alternate_fn = null,
elseif = false
) {
/** @type {import('#client').Effect | null} */
let consequent_effect = null;
/** @type {import('#client').Effect | null} */
let alternate_effect = null;
/** @type {boolean | null} */
let condition = null;
block(() => {
if (condition === (condition = !!get_condition())) return;
/** Whether or not there was a hydration mismatch. Needs to be a `let` or else it isn't treeshaken out */
let mismatch = false;
if (hydrating) {
const is_else = anchor.data === HYDRATION_END_ELSE;
if (condition === is_else) {
// Hydration mismatch: remove everything inside the anchor and start fresh.
// This could happen with `{#if browser}...{/if}`, for example
remove(hydrate_nodes);
set_hydrating(false);
mismatch = true;
}
}
if (condition) {
if (consequent_effect) {
resume_effect(consequent_effect);
} else {
consequent_effect = branch(() => consequent_fn(anchor));
}
if (alternate_effect) {
pause_effect(alternate_effect, () => {
alternate_effect = null;
});
}
} else {
if (alternate_effect) {
resume_effect(alternate_effect);
} else if (alternate_fn) {
alternate_effect = branch(() => alternate_fn(anchor));
}
if (consequent_effect) {
pause_effect(consequent_effect, () => {
consequent_effect = null;
});
}
}
if (mismatch) {
// continue in hydration mode
set_hydrating(true);
}
}, EFFECT_TRANSPARENT);
}
|