choerodon-ui/pro/lib/_util/focusable.js

An enterprise-class UI design language and React-based implementation

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = focusable;
exports.findFirstFocusableElement = findFirstFocusableElement;
exports.findFocusableElements = findFocusableElements;
exports.findFocusableParent = findFocusableParent;
var selector = 'a[href], area[href], input:not([disabled]):not([type="hidden"]), select:not([disabled]), textarea:not([disabled]), button:not([disabled]), iframe, object, embed, [tabindex="0"], [contenteditable], audio[controls], video[controls], summary, [tabindex^="0"], [tabindex^="1"], [tabindex^="2"], [tabindex^="3"], [tabindex^="4"], [tabindex^="5"], [tabindex^="6"], [tabindex^="7"], [tabindex^="8"], [tabindex^="9"]';

function focusable(node) {
  return ['matches', 'msMatchesSelector', 'webkitMatchesSelector', 'mozMatchesSelector'].some(function (method) {
    return method in node && node[method](selector);
  });
}

function findFirstFocusableElement(node) {
  return node.querySelector(selector);
}

function findFocusableElements(node) {
  return Array.from(node.querySelectorAll(selector));
}

function findFocusableParent(node, root) {
  var parentElement = node.parentElement;

  if (parentElement) {
    if (focusable(parentElement)) {
      return parentElement;
    }

    if (root && parentElement === root) {
      return null;
    }

    return findFocusableParent(parentElement, root);
  }

  return null;
}
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