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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3134x 3134x 3134x 3134x 3134x 3134x 1149x 1145x 1145x 1145x 1149x 1147x 1147x 1149x 3134x 3134x 3134x 3134x 3134x 28x 28x 28x 28x 28x 28x 3134x 2x 2x 2x 2x 2x 2x 155x 157x 157x 155x 155x 465x 465x 155x 2x 2x 2x 2x 2x 2x 2x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 195465x 195465x 195465x 195309x 195465x 194807x 194807x 194807x 194807x 194807x 194807x 194807x 658x 658x 658x 658x 658x 658x 658x 195465x 6x 6x 6x 6x 652x 195465x 638x 638x 638x 638x 195465x 1926x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 196739x 2194x 2194x 2194x 2194x 2194x 2194x 2194x 2194x 397x 269x 269x 397x 128x 128x 397x 2194x 2194x 2194x 2194x 1787x 2194x 1844x 1844x 350x 350x 350x 1926x 1926x 1926x 1926x 1926x 1926x | import { render_effect } from '../../reactivity/effects.js';
import { all_registered_events, root_event_handles } from '../../render.js';
import { define_property, is_array } from '../../utils.js';
/**
* @param {string} event_name
* @param {Element} dom
* @param {EventListener} handler
* @param {boolean} capture
* @param {boolean} [passive]
* @returns {void}
*/
export function event(event_name, dom, handler, capture, passive) {
var options = { capture, passive };
/**
* @this {EventTarget}
*/
function target_handler(/** @type {Event} */ event) {
if (!capture) {
// Only call in the bubble phase, else delegated events would be called before the capturing events
handle_event_propagation(dom, event);
}
if (!event.cancelBubble) {
return handler.call(this, event);
}
}
dom.addEventListener(event_name, target_handler, options);
// @ts-ignore
if (dom === document.body || dom === window || dom === document) {
render_effect(() => {
return () => {
dom.removeEventListener(event_name, target_handler, options);
};
});
}
}
/**
* @param {Array<string>} events
* @returns {void}
*/
export function delegate(events) {
for (var i = 0; i < events.length; i++) {
all_registered_events.add(events[i]);
}
for (var fn of root_event_handles) {
fn(events);
}
}
/**
* @param {Node} handler_element
* @param {Event} event
* @returns {void}
*/
export function handle_event_propagation(handler_element, event) {
var owner_document = handler_element.ownerDocument;
var event_name = event.type;
var path = event.composedPath?.() || [];
var current_target = /** @type {null | Element} */ (path[0] || event.target);
if (event.target !== current_target) {
define_property(event, 'target', {
configurable: true,
value: current_target
});
}
// composedPath contains list of nodes the event has propagated through.
// We check __root to skip all nodes below it in case this is a
// parent of the __root node, which indicates that there's nested
// mounted apps. In this case we don't want to trigger events multiple times.
var path_idx = 0;
// @ts-expect-error is added below
var handled_at = event.__root;
if (handled_at) {
var at_idx = path.indexOf(handled_at);
if (
at_idx !== -1 &&
(handler_element === document || handler_element === /** @type {any} */ (window))
) {
// This is the fallback document listener or a window listener, but the event was already handled
// -> ignore, but set handle_at to document/window so that we're resetting the event
// chain in case someone manually dispatches the same event object again.
// @ts-expect-error
event.__root = handler_element;
return;
}
// We're deliberately not skipping if the index is higher, because
// someone could create an event programmatically and emit it multiple times,
// in which case we want to handle the whole propagation chain properly each time.
// (this will only be a false negative if the event is dispatched multiple times and
// the fallback document listener isn't reached in between, but that's super rare)
var handler_idx = path.indexOf(handler_element);
if (handler_idx === -1) {
// handle_idx can theoretically be -1 (happened in some JSDOM testing scenarios with an event listener on the window object)
// so guard against that, too, and assume that everything was handled at this point.
return;
}
if (at_idx <= handler_idx) {
// +1 because at_idx is the element which was already handled, and there can only be one delegated event per element.
// Avoids on:click and onclick on the same event resulting in onclick being fired twice.
path_idx = at_idx + 1;
}
}
current_target = /** @type {Element} */ (path[path_idx] || event.target);
// Proxy currentTarget to correct target
define_property(event, 'currentTarget', {
configurable: true,
get() {
return current_target || owner_document;
}
});
while (current_target !== null) {
/** @type {null | Element} */
var parent_element =
current_target.parentNode || /** @type {any} */ (current_target).host || null;
var internal_prop_name = '__' + event_name;
// @ts-ignore
var delegated = current_target[internal_prop_name];
if (delegated !== undefined && !(/** @type {any} */ (current_target).disabled)) {
if (is_array(delegated)) {
var [fn, ...data] = delegated;
fn.apply(current_target, [event, ...data]);
} else {
delegated.call(current_target, event);
}
}
if (
event.cancelBubble ||
parent_element === handler_element ||
current_target === handler_element
) {
break;
}
current_target = parent_element;
}
// @ts-expect-error is used above
event.__root = handler_element;
// @ts-expect-error is used above
current_target = handler_element;
}
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