@wordpress/components/build/slot-fill/bubbles-virtually/fill.js

UI components for WordPress.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = Fill;

var _element = require("@wordpress/element");

var _useSlot = _interopRequireDefault(require("./use-slot"));

/**
 * WordPress dependencies
 */

/**
 * Internal dependencies
 */
function useForceUpdate() {
  const [, setState] = (0, _element.useState)({});
  const mounted = (0, _element.useRef)(true);
  (0, _element.useEffect)(() => {
    return () => {
      mounted.current = false;
    };
  }, []);
  return () => {
    if (mounted.current) {
      setState({});
    }
  };
}

function Fill({
  name,
  children
}) {
  const slot = (0, _useSlot.default)(name);
  const ref = (0, _element.useRef)({
    rerender: useForceUpdate()
  });
  (0, _element.useEffect)(() => {
    // We register fills so we can keep track of their existance.
    // Some Slot implementations need to know if there're already fills
    // registered so they can choose to render themselves or not.
    slot.registerFill(ref);
    return () => {
      slot.unregisterFill(ref);
    };
  }, [slot.registerFill, slot.unregisterFill]);

  if (!slot.ref || !slot.ref.current) {
    return null;
  }

  if (typeof children === 'function') {
    children = children(slot.fillProps);
  }

  return (0, _element.createPortal)(children, slot.ref.current);
}
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