zent/form/lib/Field.js

一套前端设计语言和基于React的实现

'use strict';

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

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

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 _class, _temp, _initialiseProps; /* eslint-disable no-underscore-dangle */

var _react = require('react');

var _isEqual = require('zent-utils/lodash/isEqual');

var _isEqual2 = _interopRequireDefault(_isEqual);

var _omit = require('zent-utils/lodash/omit');

var _omit2 = _interopRequireDefault(_omit);

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

var _unknownProps = require('./unknownProps');

var _unknownProps2 = _interopRequireDefault(_unknownProps);

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

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return 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 Field = (_temp = _class = function (_Component) {
  _inherits(Field, _Component);

  // validationError为默认错误提示
  // validationErrors为指定校验规则所对应的错误提示
  function Field(props, context) {
    _classCallCheck(this, Field);

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

    _initialiseProps.call(_this);

    if (!context.zentForm) {
      throw new Error('Field must be in zent-form');
    }
    _this.state = {
      _value: props.value,
      _isValid: true,
      _isPristine: true,
      _isValidating: false,
      _pristineValue: props.value,
      _validationError: [],
      _externalError: null
    };
    _this._validations = props.validations || {};
    return _this;
  }

  _createClass(Field, [{
    key: 'shouldComponentUpdate',
    value: function shouldComponentUpdate(nextProps, nextState) {
      return !(0, _isEqual2['default'])(nextState, this.state) || !(0, _isEqual2['default'])(nextProps, this.props);
    }
  }, {
    key: 'componentWillMount',
    value: function componentWillMount() {
      if (!this.props.name) {
        throw new Error('Form Field requires a name property when used');
      }
      this.context.zentForm.attachToForm(this);
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if ('validations' in nextProps) {
        this._validations = nextProps.validations;
      }
    }
  }, {
    key: 'componentDidUpdate',
    value: function componentDidUpdate(prevProps) {
      // 支持props中的value动态更新
      if (!(0, _isEqual2['default'])(this.props.value, prevProps.value)) {
        this.setValue(this.props.value);
      }

      // 动态改变validation方法，重新校验
      // if (!isEqual(this.props.validations, prevProps.validations)) {
      //   this.context.zentForm.validate(this)
      // }
    }
  }, {
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      this.context.zentForm.detachFromForm(this);
    }
  }, {
    key: 'render',
    value: function render() {
      var _this2 = this;

      var _props = this.props,
          component = _props.component,
          rest = _objectWithoutProperties(_props, ['component']);

      var passableProps = this.processProps(_extends({}, rest, {
        ref: function ref(_ref) {
          _this2.wrappedComponent = _ref;
        },
        isTouched: !this.isPristine(),
        isPristine: this.isPristine(),
        isValid: this.isValid(),
        value: this.format(this.getValue()),
        error: this.getErrorMessage(),
        errors: this.getErrorMessages(),
        onChange: this.handleChange,
        onBlur: this.handleBlur
      }));

      // 原生的标签不能传非标准属性进去
      if (typeof component === 'string') {
        return (0, _react.createElement)(component, _extends({}, (0, _omit2['default'])(passableProps, _unknownProps2['default'])));
      }

      return (0, _react.createElement)(component, passableProps);
    }
  }]);

  return Field;
}(_react.Component), _class.propTypes = {
  name: _react.PropTypes.string.isRequired,
  component: _react.PropTypes.oneOfType([_react.PropTypes.func, _react.PropTypes.string]).isRequired,
  normalize: _react.PropTypes.func
}, _class.defaultProps = {
  validationError: '',
  validationErrors: {}
}, _class.contextTypes = {
  zentForm: _react.PropTypes.object
}, _initialiseProps = function _initialiseProps() {
  var _this3 = this;

  this.isPristine = function () {
    return _this3.state._isPristine;
  };

  this.isValid = function () {
    return _this3.state._isValid;
  };

  this.isValidating = function () {
    return _this3.state._isValidating;
  };

  this.getPristineValue = function () {
    return _this3.state._pristineValue;
  };

  this.getValue = function () {
    return _this3.state._value;
  };

  this.setValue = function (value) {
    _this3.setState({
      _value: value,
      _isPristine: false
    }, function () {
      _this3.context.zentForm.validate(_this3);
    });
  };

  this.resetValue = function () {
    _this3.setState({
      _value: _this3.state._pristineValue,
      _isPristine: true
    }, function () {
      _this3.context.zentForm.validate(_this3);
    });
  };

  this.getWrappedComponent = function () {
    return _this3.wrappedComponent;
  };

  this.getErrorMessage = function () {
    var errors = _this3.getErrorMessages();
    return errors.length ? errors[0] : null;
  };

  this.getErrorMessages = function () {
    var _state = _this3.state,
        _externalError = _state._externalError,
        _validationError = _state._validationError;

    return !_this3.isValid() ? _externalError || _validationError || [] : [];
  };

  this.normalize = function (value) {
    var normalize = _this3.props.normalize;

    if (!normalize) {
      return value;
    }
    var previousValues = _this3.context.zentForm.getFormValues();
    var previousValue = _this3.getValue();
    var nextValues = _extends({}, previousValues, _defineProperty({}, _this3.props.name, value));
    return normalize(value, previousValue, nextValues, previousValues);
  };

  this.format = function (value) {
    var format = _this3.props.format;

    if (!format) {
      return value;
    }
    return format(value);
  };

  this.handleChange = function (event) {
    var onChange = _this3.props.onChange;

    var previousValue = _this3.getValue();
    var newValue = _this3.normalize((0, _utils.getValue)(event));
    var preventSetValue = false;

    // 在传入的onChange中可以按需阻止更新value值
    if (onChange) {
      onChange(event, newValue, previousValue, function () {
        return preventSetValue = true;
      });
    }

    if (!preventSetValue) {
      _this3.setValue(newValue);
    }
  };

  this.handleBlur = function (event) {
    var _props2 = _this3.props,
        onBlur = _props2.onBlur,
        asyncValidation = _props2.asyncValidation;

    var previousValue = _this3.getValue();
    var newValue = _this3.normalize((0, _utils.getValue)(event));
    var preventSetValue = false;

    if (onBlur) {
      onBlur(event, newValue, previousValue, function () {
        return preventSetValue = true;
      });
    }

    if (!preventSetValue) {
      _this3.setValue(newValue);
      if (asyncValidation) {
        _this3.context.zentForm.asyncValidate(_this3, newValue);
      }
    }
  };

  this.processProps = function (props) {
    var type = props.type,
        value = props.value,
        rest = _objectWithoutProperties(props, ['type', 'value']);

    if (type === 'checkbox') {
      return _extends({}, rest, {
        checked: !!value,
        type: type
      });
    }
    if (type === 'file') {
      return _extends({}, rest, {
        type: type
      });
    }

    return props;
  };
}, _temp);
exports['default'] = Field;
module.exports = exports['default'];