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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 | 4923x 4923x 4923x | import eventTarget from '../eventTarget';
/**
* Small utility to trigger a custom event for a given EventTarget.
*
* @example
*
* ```javascript
* triggerEvent(element, Events.IMAGE_RENDERED, { element })
* ```
* or it can trigger event on the eventTarget itself
*
* ```javascript
* triggerEvent(eventTarget, CSTOOLS_EVENTS.ANNOTATION_MODIFIED, { viewportId, annotationUID })
* ```
*
* @param el - The element or EventTarget to trigger the event upon
* @param type - The event type name
* @param detail - The event detail to be sent
* @returns false if event is cancelable and at least one of the event handlers
* which received event called Event.preventDefault(). Otherwise it returns true.
*/
export default function triggerEvent(
el: EventTarget = eventTarget,
type: string,
detail: unknown = null
): boolean {
Iif (!type) {
throw new Error('Event type was not defined');
}
const event = new CustomEvent(type, {
detail,
cancelable: true,
});
return el.dispatchEvent(event);
}
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