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import { clone_node, empty } from './operations.js';
import { create_fragment_from_html } from './reconciler.js';
import { current_effect } from '../runtime.js';
import { TEMPLATE_FRAGMENT, TEMPLATE_USE_IMPORT_NODE } from '../../../constants.js';
import { effect } from '../reactivity/effects.js';
import { is_array } from '../utils.js';
/**
* @param {import("#client").Effect} effect
* @param {import("#client").TemplateNode | import("#client").TemplateNode[]} dom
*/
export function push_template_node(effect, dom) {
var current_dom = effect.dom;
if (current_dom === null) {
effect.dom = dom;
} else {
if (!is_array(current_dom)) {
current_dom = effect.dom = [current_dom];
}
var anchor;
// If we're working with an anchor, then remove it and put it at the end.
if (current_dom[0].nodeType === 8) {
anchor = current_dom.pop();
}
if (is_array(dom)) {
current_dom.push(...dom);
} else {
current_dom.push(dom);
}
if (anchor !== undefined) {
current_dom.push(anchor);
}
}
return dom;
}
/**
* @param {string} content
* @param {number} flags
* @returns {() => Node | Node[]}
*/
/*#__NO_SIDE_EFFECTS__*/
export function template(content, flags) {
var is_fragment = (flags & TEMPLATE_FRAGMENT) !== 0;
var use_import_node = (flags & TEMPLATE_USE_IMPORT_NODE) !== 0;
/** @type {Node} */
var node;
return () => {
var effect = /** @type {import('#client').Effect} */ (current_effect);
if (hydrating) {
var hydration_content = push_template_node(
effect,
is_fragment ? hydrate_nodes : hydrate_nodes[0]
);
return /** @type {Node} */ (hydration_content);
}
if (!node) {
node = create_fragment_from_html(content);
if (!is_fragment) node = /** @type {Node} */ (node.firstChild);
}
var clone = use_import_node ? document.importNode(node, true) : clone_node(node, true);
if (is_fragment) {
push_template_node(
effect,
/** @type {import('#client').TemplateNode[]} */ ([...clone.childNodes])
);
} else {
push_template_node(effect, /** @type {import('#client').TemplateNode} */ (clone));
}
return clone;
};
}
/**
* @param {string} content
* @param {number} flags
* @returns {() => Node | Node[]}
*/
/*#__NO_SIDE_EFFECTS__*/
export function template_with_script(content, flags) {
var first = true;
var fn = template(content, flags);
return () => {
if (hydrating) return fn();
var node = /** @type {Element | DocumentFragment} */ (fn());
if (first) {
first = false;
run_scripts(node);
}
return node;
};
}
/**
* @param {string} content
* @param {number} flags
* @returns {() => Node | Node[]}
*/
/*#__NO_SIDE_EFFECTS__*/
export function svg_template(content, flags) {
var is_fragment = (flags & TEMPLATE_FRAGMENT) !== 0;
var fn = template(`<svg>${content}</svg>`, 0); // we don't need to worry about using importNode for SVGs
/** @type {Element | DocumentFragment} */
var node;
return () => {
var effect = /** @type {import('#client').Effect} */ (current_effect);
if (hydrating) {
var hydration_content = push_template_node(
effect,
is_fragment ? hydrate_nodes : hydrate_nodes[0]
);
return /** @type {Node} */ (hydration_content);
}
if (!node) {
var svg = /** @type {Element} */ (fn());
if ((flags & TEMPLATE_FRAGMENT) === 0) {
node = /** @type {Element} */ (svg.firstChild);
} else {
node = document.createDocumentFragment();
while (svg.firstChild) {
node.appendChild(svg.firstChild);
}
}
}
var clone = clone_node(node, true);
if (is_fragment) {
push_template_node(
effect,
/** @type {import('#client').TemplateNode[]} */ ([...clone.childNodes])
);
} else {
push_template_node(effect, /** @type {import('#client').TemplateNode} */ (clone));
}
return clone;
};
}
/**
* @param {string} content
* @param {number} flags
* @returns {() => Node | Node[]}
*/
/*#__NO_SIDE_EFFECTS__*/
export function svg_template_with_script(content, flags) {
var first = true;
var fn = svg_template(content, flags);
return () => {
if (hydrating) return fn();
var node = /** @type {Element | DocumentFragment} */ (fn());
if (first) {
first = false;
run_scripts(node);
}
return node;
};
}
/**
* Creating a document fragment from HTML that contains script tags will not execute
* the scripts. We need to replace the script tags with new ones so that they are executed.
* @param {Element | DocumentFragment} node
*/
function run_scripts(node) {
// scripts were SSR'd, in which case they will run
if (hydrating) return;
const scripts =
/** @type {HTMLElement} */ (node).tagName === 'SCRIPT'
? [/** @type {HTMLScriptElement} */ (node)]
: node.querySelectorAll('script');
for (const script of scripts) {
var clone = document.createElement('script');
for (var attribute of script.attributes) {
clone.setAttribute(attribute.name, attribute.value);
}
clone.textContent = script.textContent;
// If node === script tag, replaceWith will do nothing because there's no parent yet,
// waiting until that's the case using an effect solves this.
// Don't do it in other circumstances or we could accidentally execute scripts
// in an adjacent @html tag that was instantiated in the meantime.
if (script === node) {
effect(() => script.replaceWith(clone));
} else {
script.replaceWith(clone);
}
}
}
/**
* @param {Text | Comment | Element} anchor
*/
/*#__NO_SIDE_EFFECTS__*/
export function text(anchor) {
var effect = /** @type {import('#client').Effect} */ (current_effect);
if (!hydrating) return push_template_node(effect, empty());
var node = hydrate_nodes[0];
if (!node) {
// if an {expression} is empty during SSR, `hydrate_nodes` will be empty.
// we need to insert an empty text node
anchor.before((node = empty()));
}
return push_template_node(effect, node);
}
export const comment = template('<!>', TEMPLATE_FRAGMENT);
/**
* Assign the created (or in hydration mode, traversed) dom elements to the current block
* and insert the elements into the dom (in client mode).
* @param {Text | Comment | Element} anchor
* @param {import('#client').Dom} dom
*/
export function append(anchor, dom) {
if (!hydrating) {
anchor.before(/** @type {Node} */ (dom));
}
}
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