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: / var / canvas / node_modules / react-focus-lock / dist / es2015 /
Filename : Lock.js
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import _extends from "@babel/runtime/helpers/esm/extends";
import React, { useState, useRef, useCallback } from 'react';
import { node, bool, string, any, arrayOf, oneOfType, object, func } from 'prop-types';
import * as constants from 'focus-lock/constants';
import { useMergeRefs } from 'use-callback-ref';
import { hiddenGuard } from './FocusGuard';
import { mediumFocus, mediumBlur, mediumSidecar } from './medium';
var emptyArray = [];
var FocusLock = React.forwardRef(function (props, parentRef) {
  var _extends2;

  var _useState = useState(),
      realObserved = _useState[0],
      setObserved = _useState[1];

  var observed = useRef();
  var isActive = useRef(false);
  var originalFocusedElement = useRef(null);
  var children = props.children,
      disabled = props.disabled,
      noFocusGuards = props.noFocusGuards,
      persistentFocus = props.persistentFocus,
      autoFocus = props.autoFocus,
      allowTextSelection = props.allowTextSelection,
      group = props.group,
      className = props.className,
      whiteList = props.whiteList,
      _props$shards = props.shards,
      shards = _props$shards === void 0 ? emptyArray : _props$shards,
      _props$as = props.as,
      Container = _props$as === void 0 ? 'div' : _props$as,
      _props$lockProps = props.lockProps,
      containerProps = _props$lockProps === void 0 ? {} : _props$lockProps,
      SideCar = props.sideCar,
      shouldReturnFocus = props.returnFocus,
      onActivationCallback = props.onActivation,
      onDeactivationCallback = props.onDeactivation;

  var _useState2 = useState({}),
      id = _useState2[0]; // SIDE EFFECT CALLBACKS


  var onActivation = useCallback(function () {
    originalFocusedElement.current = originalFocusedElement.current || document && document.activeElement;

    if (observed.current && onActivationCallback) {
      onActivationCallback(observed.current);
    }

    isActive.current = true;
  }, [onActivationCallback]);
  var onDeactivation = useCallback(function () {
    isActive.current = false;

    if (onDeactivationCallback) {
      onDeactivationCallback(observed.current);
    }
  }, [onDeactivationCallback]);
  var returnFocus = useCallback(function (allowDefer) {
    var current = originalFocusedElement.current;

    if (Boolean(shouldReturnFocus) && current && current.focus) {
      var focusOptions = typeof shouldReturnFocus === 'object' ? shouldReturnFocus : undefined;
      originalFocusedElement.current = null;

      if (allowDefer) {
        // React might return focus after update
        // it's safer to defer the action
        Promise.resolve().then(function () {
          return current.focus(focusOptions);
        });
      } else {
        current.focus(focusOptions);
      }
    }
  }, [shouldReturnFocus]); // MEDIUM CALLBACKS

  var onFocus = useCallback(function (event) {
    if (isActive.current) {
      mediumFocus.useMedium(event);
    }
  }, []);
  var onBlur = mediumBlur.useMedium; // REF PROPAGATION
  // not using real refs due to race conditions

  var setObserveNode = useCallback(function (newObserved) {
    if (observed.current !== newObserved) {
      observed.current = newObserved;
      setObserved(newObserved);
    }
  }, []);

  if (process.env.NODE_ENV !== 'production') {
    if (typeof allowTextSelection !== 'undefined') {
      // eslint-disable-next-line no-console
      console.warn('React-Focus-Lock: allowTextSelection is deprecated and enabled by default');
    }

    React.useEffect(function () {
      if (!observed.current) {
        // eslint-disable-next-line no-console
        console.error('FocusLock: could not obtain ref to internal node');
      }
    }, []);
  }

  var lockProps = _extends((_extends2 = {}, _extends2[constants.FOCUS_DISABLED] = disabled && 'disabled', _extends2[constants.FOCUS_GROUP] = group, _extends2), containerProps);

  var hasLeadingGuards = noFocusGuards !== true;
  var hasTailingGuards = hasLeadingGuards && noFocusGuards !== 'tail';
  var mergedRef = useMergeRefs([parentRef, setObserveNode]);
  return React.createElement(React.Fragment, null, hasLeadingGuards && [React.createElement("div", {
    key: "guard-first",
    "data-focus-guard": true,
    tabIndex: disabled ? -1 : 0,
    style: hiddenGuard
  }), // nearest focus guard
  React.createElement("div", {
    key: "guard-nearest",
    "data-focus-guard": true,
    tabIndex: disabled ? -1 : 1,
    style: hiddenGuard
  })], !disabled && React.createElement(SideCar, {
    id: id,
    sideCar: mediumSidecar,
    observed: realObserved,
    disabled: disabled,
    persistentFocus: persistentFocus,
    autoFocus: autoFocus,
    whiteList: whiteList,
    shards: shards,
    onActivation: onActivation,
    onDeactivation: onDeactivation,
    returnFocus: returnFocus
  }), React.createElement(Container, _extends({
    ref: mergedRef
  }, lockProps, {
    className: className,
    onBlur: onBlur,
    onFocus: onFocus
  }), children), hasTailingGuards && React.createElement("div", {
    "data-focus-guard": true,
    tabIndex: disabled ? -1 : 0,
    style: hiddenGuard
  }));
});
FocusLock.propTypes = process.env.NODE_ENV !== "production" ? {
  children: node,
  disabled: bool,
  returnFocus: oneOfType([bool, object]),
  noFocusGuards: bool,
  allowTextSelection: bool,
  autoFocus: bool,
  persistentFocus: bool,
  group: string,
  className: string,
  whiteList: func,
  shards: arrayOf(any),
  as: oneOfType([string, func, object]),
  lockProps: object,
  onActivation: func,
  onDeactivation: func,
  sideCar: any.isRequired
} : {};
FocusLock.defaultProps = {
  children: undefined,
  disabled: false,
  returnFocus: false,
  noFocusGuards: false,
  autoFocus: true,
  persistentFocus: false,
  allowTextSelection: undefined,
  group: undefined,
  className: undefined,
  whiteList: undefined,
  shards: undefined,
  as: 'div',
  lockProps: {},
  onActivation: undefined,
  onDeactivation: undefined
};
export default FocusLock;