design-system-govbr-rnp/dist/components/Tabs/Tabs.js

## Padrão Digital de Governo - React Biblioteca de componentes React que implementa o [Padrão Visual digital do governo](https://www.gov.br/ds/). O objetivo da biblioteca é facilitar a implementação e promover a padronização das interfaces de sistemas do

"use strict";

function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _react = _interopRequireWildcard(require("react"));
var _propTypes = _interopRequireDefault(require("prop-types"));
var _TabsContext = require("./TabsContext");
var _styles = require("./styles");
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
var Tabs = function Tabs(_ref) {
  var ariaLabel = _ref.ariaLabel,
    children = _ref.children,
    density = _ref.density,
    inverted = _ref.inverted;
  var _useContext = (0, _react.useContext)(_TabsContext.TabContext),
    currentTab = _useContext.currentTab,
    setCurrentTab = _useContext.setCurrentTab;
  var childrenRefs = (0, _react.useRef)([]);
  var current = childrenRefs.current;
  var childrenWithProps = _react.default.Children.map(children, function (child, index) {
    return /*#__PURE__*/_react.default.cloneElement(child, {
      ref: function ref(_ref2) {
        return current[index] = _ref2;
      }
    });
  });
  var getSelectedIndex = function getSelectedIndex() {
    return current.findIndex(function (children) {
      return children.id === currentTab;
    });
  };
  var setNextTab = function setNextTab(index) {
    var childrenList = current;
    if (index === childrenList.length - 1) {
      return setFirstTab();
    }
    var nextTab = childrenList[index + 1];
    setCurrentTab(nextTab.id);
    nextTab.focus();
  };
  var setPreviousTab = function setPreviousTab(index) {
    var childrenList = current;
    if (index === 0) {
      return setLastTab();
    }
    var nextTab = childrenList[index - 1];
    setCurrentTab(nextTab.id);
    nextTab.focus();
  };
  var setFirstTab = function setFirstTab() {
    var childrenList = current;
    setCurrentTab(childrenList[0].id);
    childrenList[0].focus();
  };
  var setLastTab = function setLastTab() {
    var childrenList = current;
    setCurrentTab(childrenList[childrenList.length - 1].id);
    childrenList[childrenList.length - 1].focus();
  };
  var keyboardHandler = function keyboardHandler(event) {
    switch (event.key) {
      case "ArrowLeft":
        setPreviousTab(getSelectedIndex());
        break;
      case "ArrowRight":
        setNextTab(getSelectedIndex());
        break;
      case "Home":
        setFirstTab();
        break;
      case "End":
        setLastTab();
        break;
      default:
        return;
    }
  };
  return /*#__PURE__*/_react.default.createElement(_styles.TabList, {
    role: "tablist",
    "aria-label": ariaLabel,
    density: density,
    inverted: inverted,
    onKeyDown: function onKeyDown(event) {
      return keyboardHandler(event);
    }
  }, childrenWithProps);
};
Tabs.defaultProps = {
  density: "small",
  inverted: false
};
Tabs.propTypes = {
  ariaLabel: _propTypes.default.string.isRequired,
  children: _propTypes.default.oneOfType([_propTypes.default.arrayOf(_propTypes.default.node), _propTypes.default.node]).isRequired,
  density: _propTypes.default.string,
  inverted: _propTypes.default.bool
};
var _default = Tabs;
exports.default = _default;