code-lab/node_modules/vuetify/lib/directives/click-outside/index.mjs

// Utilities
import { attachedRoot } from "../../util/index.mjs"; // Types
function defaultConditional() {
  return true;
}
function checkEvent(e, el, binding) {
  // The include element callbacks below can be expensive
  // so we should avoid calling them when we're not active.
  // Explicitly check for false to allow fallback compatibility
  // with non-toggleable components
  if (!e || checkIsActive(e, binding) === false) return false;

  // If we're clicking inside the shadowroot, then the app root doesn't get the same
  // level of introspection as to _what_ we're clicking. We want to check to see if
  // our target is the shadowroot parent container, and if it is, ignore.
  const root = attachedRoot(el);
  if (typeof ShadowRoot !== 'undefined' && root instanceof ShadowRoot && root.host === e.target) return false;

  // Check if additional elements were passed to be included in check
  // (click must be outside all included elements, if any)
  const elements = (typeof binding.value === 'object' && binding.value.include || (() => []))();
  // Add the root element for the component this directive was defined on
  elements.push(el);

  // Check if it's a click outside our elements, and then if our callback returns true.
  // Non-toggleable components should take action in their callback and return falsy.
  // Toggleable can return true if it wants to deactivate.
  // Note that, because we're in the capture phase, this callback will occur before
  // the bubbling click event on any outside elements.
  return !elements.some(el => el?.contains(e.target));
}
function checkIsActive(e, binding) {
  const isActive = typeof binding.value === 'object' && binding.value.closeConditional || defaultConditional;
  return isActive(e);
}
function directive(e, el, binding) {
  const handler = typeof binding.value === 'function' ? binding.value : binding.value.handler;

  // Clicks in the Shadow DOM change their target while using setTimeout, so the original target is saved here
  e.shadowTarget = e.target;
  el._clickOutside.lastMousedownWasOutside && checkEvent(e, el, binding) && setTimeout(() => {
    checkIsActive(e, binding) && handler && handler(e);
  }, 0);
}
function handleShadow(el, callback) {
  const root = attachedRoot(el);
  callback(document);
  if (typeof ShadowRoot !== 'undefined' && root instanceof ShadowRoot) {
    callback(root);
  }
}
export const ClickOutside = {
  // [data-app] may not be found
  // if using bind, inserted makes
  // sure that the root element is
  // available, iOS does not support
  // clicks on body
  mounted(el, binding) {
    const onClick = e => directive(e, el, binding);
    const onMousedown = e => {
      el._clickOutside.lastMousedownWasOutside = checkEvent(e, el, binding);
    };
    handleShadow(el, app => {
      app.addEventListener('click', onClick, true);
      app.addEventListener('mousedown', onMousedown, true);
    });
    if (!el._clickOutside) {
      el._clickOutside = {
        lastMousedownWasOutside: false
      };
    }
    el._clickOutside[binding.instance.$.uid] = {
      onClick,
      onMousedown
    };
  },
  beforeUnmount(el, binding) {
    if (!el._clickOutside) return;
    handleShadow(el, app => {
      if (!app || !el._clickOutside?.[binding.instance.$.uid]) return;
      const {
        onClick,
        onMousedown
      } = el._clickOutside[binding.instance.$.uid];
      app.removeEventListener('click', onClick, true);
      app.removeEventListener('mousedown', onMousedown, true);
    });
    delete el._clickOutside[binding.instance.$.uid];
  }
};
export default ClickOutside;
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