All files / roosterjs-content-model-dom/lib/domUtils/hiddenProperties undeletableLink.ts

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import { getHiddenProperty, setHiddenProperty } from './hiddenProperty';
import type { HiddenProperty } from './hiddenProperty';
 
const UndeletableLinkKey: keyof HiddenProperty = 'undeletable';
 
/**
 * Set a hidden property on a link element to indicate whether it is undeletable or not.
 * This is used to prevent the link from being deleted when the user tries to delete it.
 * @param a The link element to set the property on
 * @param undeletable Whether the link is undeletable or not
 */
export function setLinkUndeletable(a: HTMLAnchorElement, undeletable: boolean) {
    setHiddenProperty(a, UndeletableLinkKey, undeletable);
}
 
/**
 * Check if a link element is undeletable or not.
 * This is used to determine if the link can be deleted when the user tries to delete it.
 * @param a The link element to check
 * @returns True if the link is undeletable, false otherwise
 */
export function isLinkUndeletable(a: HTMLAnchorElement): boolean {
    return !!getHiddenProperty(a, UndeletableLinkKey);
}