react-typing/dist/Typing.js

Typing animation with react

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _utils = require('./utils');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Typing = function (_Component) {
  _inherits(Typing, _Component);

  function Typing(props) {
    _classCallCheck(this, Typing);

    var _this = _possibleConstructorReturn(this, (Typing.__proto__ || Object.getPrototypeOf(Typing)).call(this, props));

    _this.typeCharacter = _this.typeCharacter.bind(_this);

    _this.state = {
      charactersToType: '',
      charactersTyped: [],
      characterIndex: 0,
      keyDelay: props.keyDelay || 100
    };
    return _this;
  }

  _createClass(Typing, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var children = this.props.children;
      var keyDelay = this.state.keyDelay;

      var charactersToType = (0, _utils.extractText)(children);
      this.setState(function () {
        return { charactersToType: charactersToType };
      }); // eslint-disable-line
      this.startTyping(keyDelay);
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if (nextProps.keyDelay !== this.state.keyDelay) {
        this.setState(function () {
          return { keyDelay: nextProps.keyDelay };
        });
        this.startTyping(nextProps.keyDelay);
      }
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      clearInterval(this.typeCharacterInterval);
    }
  }, {
    key: 'startTyping',
    value: function startTyping(keyDelay) {
      clearInterval(this.typeCharacterInterval);
      this.typeCharacterInterval = setInterval(this.typeCharacter, keyDelay);
    }
  }, {
    key: 'typeCharacter',
    value: function typeCharacter() {
      var _props = this.props,
          children = _props.children,
          onDone = _props.onDone;
      var _state = this.state,
          charactersToType = _state.charactersToType,
          characterIndex = _state.characterIndex;

      var composeTreeText = (0, _utils.composeTree)(children, charactersToType, characterIndex);

      this.setState(function () {
        return {
          charactersTyped: composeTreeText,
          characterIndex: characterIndex + 1
        };
      });

      if (charactersToType && charactersToType.length - 1 < characterIndex || !charactersToType) {
        clearInterval(this.typeCharacterInterval);

        if (onDone) {
          onDone();
        }
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var restProps = _objectWithoutProperties(this.props, []);

      delete restProps.children;
      delete restProps.keyDelay;
      delete restProps.onDone;
      var charactersTyped = this.state.charactersTyped;


      return _react2.default.createElement(
        'span',
        restProps,
        charactersTyped
      );
    }
  }]);

  return Typing;
}(_react.Component);

Typing.defaultProps = {
  children: '',
  keyDelay: 100,
  onDone: null
};

Typing.propTypes = {
  children: _propTypes2.default.node,
  keyDelay: _propTypes2.default.number,
  onDone: _propTypes2.default.func
};

exports.default = Typing;