@roderickhsiao/react-i13n/dist-es/hooks/useScanLinks.js

[Experiment] React I13n provides a performant and scalable solution to application instrumentation.

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

/**
 * Copyright 2015 - Present, Yahoo Inc.
 * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
 */
import { useEffect, useState } from 'react';
import { findDOMNode } from 'react-dom';
import { listen } from 'subscribe-ui-event';
import { IS_DEBUG_MODE } from '../utils/variables';
import clickHandler from '../libs/clickHandler';
import DebugDashboard from '../libs/DebugDashboard';
import I13nNode from '../core/I13nNode';
var DEFAULT_SCAN_TAGS = ['a', 'button'];
/**
 * Scan matched tags and
 * 1. create i13n node
 * 2. bind the click event
 * 3. fire created event
 * 4. (if enabled) create debug node for it
 */

var useScanLinks = (_ref) => {
  var {
    enabled,
    executeEvent,
    i13nInstance,
    i13nNode: parentI13nNode,
    node,
    shouldFollowLink,
    tags = DEFAULT_SCAN_TAGS
  } = _ref;
  var [subI13nComponents, setSubI13nComponents] = useState([]);

  if (!enabled) {
    return;
  }

  useEffect(() => {
    var DOMNode = findDOMNode(node);

    if (!DOMNode) {
      return;
    }

    var foundElements = []; // find all links

    tags.forEach(tagName => {
      var collections = DOMNode.getElementsByTagName(tagName);

      if (collections) {
        foundElements = foundElements.concat(_toConsumableArray(collections));
      }
    }); // for each link
    // 1. create a i13n node
    // 2. bind the click event
    // 3. fire created event
    // 4. (if enabled) create debug node for it

    var newSubI13nComponents = foundElements.map(element => {
      var I13nNodeClass = i13nInstance.getI13nNodeClass() || I13nNode;
      var subI13nNode = new I13nNodeClass(parentI13nNode, {}, true, i13nInstance.isViewportEnabled());
      subI13nNode.setDOMNode(element);

      var handleClick = e => {
        clickHandler(e, {
          executeEvent,
          i13nNode: subI13nNode,
          props: {
            href: element.href,
            follow: true
          },
          shouldFollowLink
        });
      };

      i13nInstance.execute('created', {
        i13nNode: subI13nNode
      });
      return {
        componentClickListener: listen(element, 'click', handleClick),
        debugDashboard: IS_DEBUG_MODE ? new DebugDashboard(subI13nNode) : null,
        domElement: element,
        i13nNode: subI13nNode
      };
    });

    if (newSubI13nComponents) {
      setSubI13nComponents(newSubI13nComponents);
    }

    return () => {
      subI13nComponents.forEach(subI13nComponent => {
        var _subI13nComponent$com, _subI13nComponent$vie, _subI13nComponent$deb;

        subI13nComponent === null || subI13nComponent === void 0 ? void 0 : (_subI13nComponent$com = subI13nComponent.componentClickListener) === null || _subI13nComponent$com === void 0 ? void 0 : _subI13nComponent$com.remove();
        subI13nComponent === null || subI13nComponent === void 0 ? void 0 : (_subI13nComponent$vie = subI13nComponent.viewportDetector) === null || _subI13nComponent$vie === void 0 ? void 0 : _subI13nComponent$vie.unsubscribeAll();
        subI13nComponent === null || subI13nComponent === void 0 ? void 0 : (_subI13nComponent$deb = subI13nComponent.debugDashboard) === null || _subI13nComponent$deb === void 0 ? void 0 : _subI13nComponent$deb.destroy();
      });
    };
  }, [tags, node, parentI13nNode, shouldFollowLink]);
  return {
    subI13nComponents
  };
};

export default useScanLinks;