node_modules/eslint-plugin-jsx-a11y/lib/rules/label-has-for.js

"use strict";

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

var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));

var _jsxAstUtils = require("jsx-ast-utils");

var _schemas = require("../util/schemas");

var _hasAccessibleChild = _interopRequireDefault(require("../util/hasAccessibleChild"));

/**
 * @fileoverview Enforce label tags have htmlFor attribute.
 * @author Ethan Cohen
 */
// ----------------------------------------------------------------------------
// Rule Definition
// ----------------------------------------------------------------------------
var enumValues = ['nesting', 'id'];
var schema = {
  type: 'object',
  properties: {
    components: _schemas.arraySchema,
    required: {
      oneOf: [{
        type: 'string',
        "enum": enumValues
      }, (0, _schemas.generateObjSchema)({
        some: (0, _schemas.enumArraySchema)(enumValues)
      }, ['some']), (0, _schemas.generateObjSchema)({
        every: (0, _schemas.enumArraySchema)(enumValues)
      }, ['every'])]
    },
    allowChildren: {
      type: 'boolean'
    }
  }
}; // Breadth-first search, assuming that HTML for forms is shallow.

function validateNesting(node) {
  var queue = (0, _toConsumableArray2["default"])(node.parent.children);
  var child;
  var opener;

  while (queue.length) {
    child = queue.shift();
    opener = child.openingElement;

    if (child.type === 'JSXElement' && opener && (opener.name.name === 'input' || opener.name.name === 'textarea' || opener.name.name === 'select')) {
      return true;
    }

    if (child.children) {
      queue = queue.concat(child.children);
    }
  }

  return false;
}

var validateId = function validateId(node) {
  var htmlForAttr = (0, _jsxAstUtils.getProp)(node.attributes, 'htmlFor');
  var htmlForValue = (0, _jsxAstUtils.getPropValue)(htmlForAttr);
  return htmlForAttr !== false && !!htmlForValue;
};

var validate = function validate(node, required, allowChildren) {
  if (allowChildren === true) {
    return (0, _hasAccessibleChild["default"])(node.parent);
  }

  if (required === 'nesting') {
    return validateNesting(node);
  }

  return validateId(node);
};

var getValidityStatus = function getValidityStatus(node, required, allowChildren) {
  if (Array.isArray(required.some)) {
    var _isValid = required.some.some(function (rule) {
      return validate(node, rule, allowChildren);
    });

    var _message = !_isValid ? "Form label must have ANY of the following types of associated control: ".concat(required.some.join(', ')) : null;

    return {
      isValid: _isValid,
      message: _message
    };
  }

  if (Array.isArray(required.every)) {
    var _isValid2 = required.every.every(function (rule) {
      return validate(node, rule, allowChildren);
    });

    var _message2 = !_isValid2 ? "Form label must have ALL of the following types of associated control: ".concat(required.every.join(', ')) : null;

    return {
      isValid: _isValid2,
      message: _message2
    };
  }

  var isValid = validate(node, required, allowChildren);
  var message = !isValid ? "Form label must have the following type of associated control: ".concat(required) : null;
  return {
    isValid,
    message
  };
};

module.exports = {
  meta: {
    deprecated: true,
    docs: {
      url: 'https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules/label-has-for.md'
    },
    schema: [schema]
  },
  create: function create(context) {
    return {
      JSXOpeningElement: function JSXOpeningElement(node) {
        var options = context.options[0] || {};
        var componentOptions = options.components || [];
        var typesToValidate = ['label'].concat(componentOptions);
        var nodeType = (0, _jsxAstUtils.elementType)(node); // Only check 'label' elements and custom types.

        if (typesToValidate.indexOf(nodeType) === -1) {
          return;
        }

        var required = options.required || {
          every: ['nesting', 'id']
        };
        var allowChildren = options.allowChildren || false;

        var _getValidityStatus = getValidityStatus(node, required, allowChildren),
            isValid = _getValidityStatus.isValid,
            message = _getValidityStatus.message;

        if (!isValid) {
          context.report({
            node,
            message
          });
        }
      }
    };
  }
};