material-ui/TextField/EnhancedTextarea.js

React Components that Implement Google's Material Design.

'use strict';

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

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

var _objectWithoutProperties2 = require('babel-runtime/helpers/objectWithoutProperties');

var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2);

var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');

var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _simpleAssign = require('simple-assign');

var _simpleAssign2 = _interopRequireDefault(_simpleAssign);

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

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

var _propTypes2 = _interopRequireDefault(_propTypes);

var _reactEventListener = require('react-event-listener');

var _reactEventListener2 = _interopRequireDefault(_reactEventListener);

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

var rowsHeight = 24;

function getStyles(props, context, state) {
  return {
    root: {
      position: 'relative' // because the shadow has position: 'absolute'
    },
    textarea: {
      height: state.height,
      width: '100%',
      resize: 'none',
      font: 'inherit',
      padding: 0,
      cursor: 'inherit'
    },
    shadow: {
      resize: 'none',
      // Overflow also needed to here to remove the extra row
      // added to textareas in Firefox.
      overflow: 'hidden',
      // Visibility needed to hide the extra text area on ipads
      visibility: 'hidden',
      position: 'absolute',
      height: 'auto'
    }
  };
}

var EnhancedTextarea = function (_Component) {
  (0, _inherits3.default)(EnhancedTextarea, _Component);

  function EnhancedTextarea() {
    var _ref;

    var _temp, _this, _ret;

    (0, _classCallCheck3.default)(this, EnhancedTextarea);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = (0, _possibleConstructorReturn3.default)(this, (_ref = EnhancedTextarea.__proto__ || (0, _getPrototypeOf2.default)(EnhancedTextarea)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
      height: null
    }, _this.handleResize = function (event) {
      _this.syncHeightWithShadow(_this.props.value, event);
    }, _this.handleChange = function (event) {
      if (!_this.props.hasOwnProperty('value')) {
        _this.syncHeightWithShadow(event.target.value);
      }

      if (_this.props.hasOwnProperty('valueLink')) {
        _this.props.valueLink.requestChange(event.target.value);
      }

      if (_this.props.onChange) {
        _this.props.onChange(event);
      }
    }, _temp), (0, _possibleConstructorReturn3.default)(_this, _ret);
  }

  (0, _createClass3.default)(EnhancedTextarea, [{
    key: 'componentWillMount',
    value: function componentWillMount() {
      this.setState({
        height: this.props.rows * rowsHeight
      });
    }
  }, {
    key: 'componentDidMount',
    value: function componentDidMount() {
      this.syncHeightWithShadow(this.props.value);
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if (nextProps.value !== this.props.value || nextProps.rowsMax !== this.props.rowsMax) {
        this.syncHeightWithShadow(nextProps.value, null, nextProps);
      }
    }
  }, {
    key: 'getInputNode',
    value: function getInputNode() {
      return this.refs.input;
    }
  }, {
    key: 'setValue',
    value: function setValue(value) {
      this.getInputNode().value = value;
      this.syncHeightWithShadow(value);
    }
  }, {
    key: 'syncHeightWithShadow',
    value: function syncHeightWithShadow(newValue, event, props) {
      var shadow = this.refs.shadow;
      var displayText = this.props.hintText && (newValue === '' || newValue === undefined || newValue === null) ? this.props.hintText : newValue;

      if (displayText !== undefined) {
        shadow.value = displayText;
      }

      var newHeight = shadow.scrollHeight;

      // Guarding for jsdom, where scrollHeight isn't present.
      // See https://github.com/tmpvar/jsdom/issues/1013
      if (newHeight === undefined) return;

      props = props || this.props;

      if (props.rowsMax >= props.rows) {
        newHeight = Math.min(props.rowsMax * rowsHeight, newHeight);
      }

      newHeight = Math.max(newHeight, rowsHeight);

      if (this.state.height !== newHeight) {
        var input = this.refs.input;
        var cursorPosition = input.selectionEnd;
        this.setState({
          height: newHeight
        }, function () {
          input.setSelectionRange(cursorPosition, cursorPosition);
        });

        if (props.onHeightChange) {
          props.onHeightChange(event, newHeight);
        }
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var _props = this.props,
          onChange = _props.onChange,
          onHeightChange = _props.onHeightChange,
          rows = _props.rows,
          rowsMax = _props.rowsMax,
          shadowStyle = _props.shadowStyle,
          style = _props.style,
          hintText = _props.hintText,
          textareaStyle = _props.textareaStyle,
          valueLink = _props.valueLink,
          other = (0, _objectWithoutProperties3.default)(_props, ['onChange', 'onHeightChange', 'rows', 'rowsMax', 'shadowStyle', 'style', 'hintText', 'textareaStyle', 'valueLink']);
      var prepareStyles = this.context.muiTheme.prepareStyles;

      var styles = getStyles(this.props, this.context, this.state);
      var rootStyles = (0, _simpleAssign2.default)(styles.root, style);
      var textareaStyles = (0, _simpleAssign2.default)(styles.textarea, textareaStyle);
      var shadowStyles = (0, _simpleAssign2.default)({}, textareaStyles, styles.shadow, shadowStyle);
      var props = {};

      if (this.props.hasOwnProperty('valueLink')) {
        other.value = valueLink.value;
        props.valueLink = valueLink;
      }

      return _react2.default.createElement(
        'div',
        { style: prepareStyles(rootStyles) },
        _react2.default.createElement(_reactEventListener2.default, { target: 'window', onResize: this.handleResize }),
        _react2.default.createElement('textarea', (0, _extends3.default)({
          ref: 'shadow',
          style: prepareStyles(shadowStyles),
          tabIndex: '-1',
          rows: this.props.rows,
          defaultValue: this.props.defaultValue,
          readOnly: true,
          value: this.props.value
        }, props)),
        _react2.default.createElement('textarea', (0, _extends3.default)({}, other, {
          ref: 'input',
          rows: this.props.rows,
          style: prepareStyles(textareaStyles),
          onChange: this.handleChange
        }))
      );
    }
  }]);
  return EnhancedTextarea;
}(_react.Component);

EnhancedTextarea.defaultProps = {
  rows: 1
};
EnhancedTextarea.contextTypes = {
  muiTheme: _propTypes2.default.object.isRequired
};
EnhancedTextarea.propTypes = process.env.NODE_ENV !== "production" ? {
  defaultValue: _propTypes2.default.any,
  disabled: _propTypes2.default.bool,
  hintText: _propTypes2.default.node,
  onChange: _propTypes2.default.func,
  onHeightChange: _propTypes2.default.func,
  rows: _propTypes2.default.number,
  rowsMax: _propTypes2.default.number,
  shadowStyle: _propTypes2.default.object,
  /**
   * Override the inline-styles of the root element.
   */
  style: _propTypes2.default.object,
  textareaStyle: _propTypes2.default.object,
  value: _propTypes2.default.string,
  valueLink: _propTypes2.default.object
} : {};
exports.default = EnhancedTextarea;