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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 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 12x 12x 12x 12x 12x 16x 16x 12x 12x 12x 12x 16x 16x 12x 12x 12x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 722x 722x 722x 722x 722x 722x 722x 722x 722x 722x 3x 3x 3x 3x 4x 4x 4x 4x 4x 22x 22x 22x 4x 4x 3x 3x 3x 3x 3x 722x | import { render_effect } from '../../../reactivity/effects.js';
/**
* Fires the handler once immediately (unless corresponding arg is set to `false`),
* then listens to the given events until the render effect context is destroyed
* @param {Element | Window} target
* @param {Array<string>} events
* @param {() => void} handler
* @param {any} call_handler_immediately
*/
export function listen(target, events, handler, call_handler_immediately = true) {
if (call_handler_immediately) {
handler();
}
for (var name of events) {
target.addEventListener(name, handler);
}
render_effect(() => {
return () => {
for (var name of events) {
target.removeEventListener(name, handler);
}
};
});
}
let listening_to_form_reset = false;
/**
* Listen to the given event, and then instantiate a global form reset listener if not already done,
* to notify all bindings when the form is reset
* @param {HTMLElement} element
* @param {string} event
* @param {() => void} handler
* @param {() => void} [on_reset]
*/
export function listen_to_event_and_reset_event(element, event, handler, on_reset = handler) {
element.addEventListener(event, handler);
// @ts-expect-error
const prev = element.__on_r;
if (prev) {
// special case for checkbox that can have multiple binds (group & checked)
// @ts-expect-error
element.__on_r = () => {
prev();
on_reset();
};
} else {
// @ts-expect-error
element.__on_r = on_reset;
}
if (!listening_to_form_reset) {
listening_to_form_reset = true;
document.addEventListener(
'reset',
(evt) => {
// Needs to happen one tick later or else the dom properties of the form
// elements have not updated to their reset values yet
Promise.resolve().then(() => {
if (!evt.defaultPrevented) {
for (const e of /**@type {HTMLFormElement} */ (evt.target).elements) {
// @ts-expect-error
e.__on_r?.();
}
}
});
},
// In the capture phase to guarantee we get noticed of it (no possiblity of stopPropagation)
{ capture: true }
);
}
}
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