react-native/Libraries/Renderer/src/renderers/shared/utils/isTextInputElement.js

A framework for building native apps using React

/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule isTextInputElement
 * @flow
 */

'use strict';

/**
 * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
 */
var supportedInputTypes: {[key: string]: true | void} = {
  'color': true,
  'date': true,
  'datetime': true,
  'datetime-local': true,
  'email': true,
  'month': true,
  'number': true,
  'password': true,
  'range': true,
  'search': true,
  'tel': true,
  'text': true,
  'time': true,
  'url': true,
  'week': true,
};

function isTextInputElement(elem: ?HTMLElement): boolean {
  var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();

  if (nodeName === 'input') {
    return !!supportedInputTypes[((elem: any): HTMLInputElement).type];
  }

  if (nodeName === 'textarea') {
    return true;
  }

  return false;
}

module.exports = isTextInputElement;