zent/lib/form/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 _defineProperty2 = require('babel-runtime/helpers/defineProperty');

var _defineProperty3 = _interopRequireDefault(_defineProperty2);

var _extends3 = require('babel-runtime/helpers/extends');

var _extends4 = _interopRequireDefault(_extends3);

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

var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2);

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 _react = require('react');

var _isEqual = require('lodash/isEqual');

var _isEqual2 = _interopRequireDefault(_isEqual);

var _omit = require('lodash/omit');

var _omit2 = _interopRequireDefault(_omit);

var _assign = require('lodash/assign');

var _assign2 = _interopRequireDefault(_assign);

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

var _propTypes2 = _interopRequireDefault(_propTypes);

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

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

var _unknownProps2 = _interopRequireDefault(_unknownProps);

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

var Field = function (_Component) {
  (0, _inherits3['default'])(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) {
    (0, _classCallCheck3['default'])(this, Field);

    var _this = (0, _possibleConstructorReturn3['default'])(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,
      _isDirty: false,
      _isValidating: false,
      _initialValue: props.value,
      _validationError: [],
      _externalError: null,
      _asyncValidated: false
    };
    _this._name = (0, _utils.prefixName)(context.zentForm, props.name);
    _this._validations = props.validations || {};
    return _this;
  }

  (0, _createClass3['default'])(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');
      }
      var zentForm = this.context.zentForm;
      zentForm.attachToForm(this);

      this._name = (0, _utils.prefixName)(zentForm, this.props.name);
      if (this.context.zentForm.getSubFieldArray) {
        var currentValue = this.context.zentForm.getSubFieldArray(this._name);
        currentValue && this.setState({
          _value: currentValue
        });
      }
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      if ('validations' in nextProps) {
        this._validations = nextProps.validations;
      }

      this._name = (0, _utils.prefixName)(this.context.zentForm, nextProps.name);
      if (this.context.zentForm.getSubFieldArray) {
        var currentValue = this.context.zentForm.getSubFieldArray(this._name);
        currentValue && this.setState({
          _value: currentValue
        });
      }
    }
  }, {
    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 = (0, _objectWithoutProperties3['default'])(_props, ['component']);

      var passableProps = this.processProps((0, _extends4['default'])({}, rest, {
        ref: function ref(_ref) {
          _this2.wrappedComponent = _ref;
        },
        name: this.getName(),
        isTouched: this.isDirty(),
        isDirty: this.isDirty(),
        isValid: this.isValid(),
        isAsyncValidated: this.isAsyncValidated,
        isActive: this.isActive(),
        value: this.format(this.getValue()),
        error: this.getErrorMessage(),
        errors: this.getErrorMessages(),
        onChange: this.handleChange,
        onBlur: this.handleBlur,
        onFocus: this.handleFocus
      }));

      // 原生的标签不能传非标准属性进去
      if (typeof component === 'string') {
        return (0, _react.createElement)(component, (0, _extends4['default'])({}, (0, _omit2['default'])(passableProps, _unknownProps2['default'])));
      }

      return (0, _react.createElement)(component, passableProps);
    }
  }]);
  return Field;
}(_react.Component); /* eslint-disable no-underscore-dangle */

Field.propTypes = {
  name: _propTypes2['default'].string.isRequired,
  component: _propTypes2['default'].oneOfType([_propTypes2['default'].func, _propTypes2['default'].string]).isRequired,
  normalize: _propTypes2['default'].func,
  format: _propTypes2['default'].func,
  validationError: _propTypes2['default'].string,
  validationErrors: _propTypes2['default'].object,
  validateOnBlur: _propTypes2['default'].bool,
  validateOnChange: _propTypes2['default'].bool,
  clearErrorOnFocus: _propTypes2['default'].bool
};
Field.defaultProps = {
  value: '',
  validationError: '',
  validationErrors: {},
  validateOnBlur: true,
  validateOnChange: true,
  clearErrorOnFocus: true
};
Field.contextTypes = {
  zentForm: _propTypes2['default'].object
};

var _initialiseProps = function _initialiseProps() {
  var _this3 = this;

  this.isDirty = function () {
    return _this3.state._isDirty;
  };

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

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

  this.isActive = function () {
    return _this3.state._active;
  };

  this.getInitialValue = function () {
    return _this3.state._initialValue;
  };

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

  this.getName = function () {
    return _this3._name;
  };

  this.isAsyncValidated = function () {
    return _this3.state._asyncValidated;
  };

  this.setValue = function (value) {
    var needValidate = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;

    _this3.setState({
      _value: value,
      _isDirty: needValidate
    }, function () {
      _this3.context.zentForm.validate(_this3);
    });
  };

  this.resetValue = function () {
    _this3.setState({
      _value: _this3.state._initialValue,
      _isDirty: false
    }, function () {
      _this3.context.zentForm.validate(_this3);
    });
  };

  this.setInitialValue = function (value) {
    _this3.setState({
      _value: value || _this3.state._initialValue,
      _initialValue: value || _this3.state._initialValue,
      _isDirty: false
    }, 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 = (0, _extends4['default'])({}, previousValues, (0, _defineProperty3['default'])({}, _this3.getName(), 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 options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { merge: false };
    var _props2 = _this3.props,
        onChange = _props2.onChange,
        validateOnChange = _props2.validateOnChange;

    var previousValue = _this3.getValue();
    var currentValue = options.merge ? (0, _utils.getCurrentValue)((0, _utils.getValue)(event), previousValue) : (0, _utils.getValue)(event);
    var newValue = _this3.normalize(currentValue);
    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, validateOnChange);
      _this3.context.zentForm.onChangeFieldArray && _this3.context.zentForm.onChangeFieldArray(_this3._name, newValue);
    }
  };

  this.handleFocus = function (event) {
    var _props3 = _this3.props,
        onFocus = _props3.onFocus,
        clearErrorOnFocus = _props3.clearErrorOnFocus;

    var data = {
      _active: true
    };

    if (onFocus) {
      onFocus(event);
    }

    if (clearErrorOnFocus) {
      (0, _assign2['default'])(data, {
        _isValid: true,
        _validationError: [],
        _externalError: null
      });
    }

    _this3.setState(data);
  };

  this.handleBlur = function (event) {
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { merge: false };
    var _props4 = _this3.props,
        onBlur = _props4.onBlur,
        asyncValidation = _props4.asyncValidation,
        validateOnBlur = _props4.validateOnBlur;

    var previousValue = _this3.getValue();
    var currentValue = options.merge ? (0, _utils.getCurrentValue)((0, _utils.getValue)(event), previousValue) : (0, _utils.getValue)(event);
    var newValue = _this3.normalize(currentValue);
    var preventSetValue = false;

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

    _this3.setState({
      _active: false
    });

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

  this.processProps = function (props) {
    var type = props.type,
        value = props.value,
        rest = (0, _objectWithoutProperties3['default'])(props, ['type', 'value']);

    if (type === 'checkbox') {
      return (0, _extends4['default'])({}, rest, {
        checked: !!value,
        type: type
      });
    }
    if (type === 'file') {
      return (0, _extends4['default'])({}, rest, {
        type: type
      });
    }

    return props;
  };
};

exports['default'] = Field;