lm-form/lib/textarea.js

* 作者：liuduan * 邮箱：liuduan.05.05@163.com * 版本：**`1.0.2`**

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
var _jsxFileName = 'src/textarea.js';

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 _classnames = require('classnames');

var _classnames2 = _interopRequireDefault(_classnames);

var _autoclear = require('./autoclear');

var _autoclear2 = _interopRequireDefault(_autoclear);

require('./index.scss');

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 _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 _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; }

// wrapper for Textarea
var Textarea = function (_Component) {
    _inherits(Textarea, _Component);

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

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

        _this.state = {
            value: 'value' in props ? props.value : props.defaultValue,
            xshow: false,
            textCounter: 0
        };

        _this.handleChange = _this.handleChange.bind(_this);
        _this.handleFocus = _this.handleFocus.bind(_this);
        _this.handleBlur = _this.handleBlur.bind(_this);
        _this.handleClear = _this.handleClear.bind(_this);

        _this.timer = null;
        return _this;
    }

    _createClass(Textarea, [{
        key: 'componentDidMount',
        value: function componentDidMount() {
            var value = this.state.value;

            if (('' + value).length) this.setState({ textCounter: ('' + value).length });
        }
    }, {
        key: 'componentWillReceiveProps',
        value: function componentWillReceiveProps(nextProps) {
            if ('value' in nextProps) {
                this.setState({
                    value: nextProps.value
                });
            } else if ('defaultValue' in nextProps) {
                this.setState({
                    value: nextProps.defaultValue
                });
            }
        }
    }, {
        key: 'componentWillUnmount',
        value: function componentWillUnmount() {
            clearTimeout(this.timer);
        }
    }, {
        key: 'handleChange',
        value: function handleChange(e) {
            var _this2 = this;

            e.persist(); // 在React.js中执行去抖动
            var value = e.target.value;

            this.setState({
                value: value,
                textCounter: ('' + value).length
            }, function () {
                _this2.controlXshow(value); // 自动显示clear btn
                _this2.props.onChange(value);
            });
        }
    }, {
        key: 'handleFocus',
        value: function handleFocus(e) {
            e.persist(); // 在React.js中执行去抖动
            // readonly直接返回
            if (this.props.readOnly || this.props.readonly) return;
            var value = this.state.value;
            // 如果有值则显示x

            this.controlXshow(value); // 自动显示clear btn
            this.props.onFocus(value);
        }
    }, {
        key: 'handleBlur',
        value: function handleBlur(e) {
            var _this3 = this;

            e.persist(); // 在React.js中执行去抖动
            // 通过异步操作保证先执行clearbtn中click事件，后执行input的onblur事件，保证clearbtn的存在可以清楚value
            var _state = this.state,
                value = _state.value,
                xshow = _state.xshow;


            clearTimeout(this.timer);
            this.timer = setTimeout(function () {
                // 异步执行 需要先判断目标是否被删除
                if (!e.target) return;
                // 自动隐藏clear btn
                if (xshow && !_this3.isUnmount) {
                    _this3.controlXshow('');
                }
            }, 20);

            this.props.onBlur(value);
        }
    }, {
        key: 'handleClear',
        value: function handleClear() {
            var _this4 = this;

            this.setState({
                value: '',
                textCounter: 0
            }, function () {
                _this4.props.onChange('');
            });
        }
    }, {
        key: 'controlXshow',
        value: function controlXshow(value) {
            this.setState({
                xshow: !!('' + value)
            });
        }
    }, {
        key: 'renderCounter',
        value: function renderCounter(maxLength) {
            return _react2.default.createElement(
                'div',
                _defineProperty({ className: 'lm-textarea-counter', __source: {
                        fileName: _jsxFileName,
                        lineNumber: 134
                    },
                    __self: this
                }, '__self', this),
                _react2.default.createElement(
                    'span',
                    _defineProperty({
                        __source: {
                            fileName: _jsxFileName,
                            lineNumber: 135
                        },
                        __self: this
                    }, '__self', this),
                    this.state.textCounter
                ),
                maxLength ? '/' + maxLength : false
            );
        }
    }, {
        key: 'render',
        value: function render() {
            var _props = this.props,
                className = _props.className,
                defaultValue = _props.defaultValue,
                value = _props.value,
                placeholder = _props.placeholder,
                onChange = _props.onChange,
                onFocus = _props.onFocus,
                onBlur = _props.onBlur,
                err = _props.err,
                maxLength = _props.maxLength,
                showCounter = _props.showCounter,
                children = _props.children,
                useClear = _props.useClear,
                others = _objectWithoutProperties(_props, ['className', 'defaultValue', 'value', 'placeholder', 'onChange', 'onFocus', 'onBlur', 'err', 'maxLength', 'showCounter', 'children', 'useClear']);

            var xshow = this.state.xshow;

            var clsPrefix = 'lm-textarea';
            var cls = (0, _classnames2.default)(clsPrefix, _defineProperty({}, clsPrefix + '-err', err), className);

            return _react2.default.createElement(
                'div',
                _defineProperty({ className: cls, __source: {
                        fileName: _jsxFileName,
                        lineNumber: 163
                    },
                    __self: this
                }, '__self', this),
                _react2.default.createElement('textarea', Object.assign({
                    maxLength: maxLength,
                    value: this.state.value || this.state.value === 0 ? this.state.value : '',
                    placeholder: placeholder,
                    onChange: this.handleChange,
                    onFocus: this.handleFocus,
                    onBlur: this.handleBlur
                }, others, _defineProperty({
                    __source: {
                        fileName: _jsxFileName,
                        lineNumber: 164
                    },
                    __self: this
                }, '__self', this))),
                _react2.default.createElement(
                    'div',
                    _defineProperty({ className: clsPrefix + '-tip', __source: {
                            fileName: _jsxFileName,
                            lineNumber: 172
                        },
                        __self: this
                    }, '__self', this),
                    useClear ? _react2.default.createElement(_autoclear2.default, _defineProperty({ show: xshow, err: err, onClear: this.handleClear, __source: {
                            fileName: _jsxFileName,
                            lineNumber: 173
                        },
                        __self: this
                    }, '__self', this)) : null,
                    showCounter ? this.renderCounter(maxLength) : null,
                    children
                )
            );
        }
    }]);

    return Textarea;
}(_react.Component);

Textarea.propTypes = {
    className: _propTypes2.default.string, // 自定义类名
    placeholder: _propTypes2.default.string, // 提示信息
    defaultValue: _propTypes2.default.string, // 默认值，用于非控制input
    value: _propTypes2.default.oneOfType([// 值，配合onChange使用
    _propTypes2.default.string, _propTypes2.default.number]),
    err: _propTypes2.default.bool, // 判断输入是否符合错误，错误：true，正确：false
    maxLength: _propTypes2.default.number, // 最大输入字数
    showCounter: _propTypes2.default.bool, // 是否显示字数提示，默认显示
    onChange: _propTypes2.default.func,
    onFocus: _propTypes2.default.func,
    onBlur: _propTypes2.default.func,
    useClear: _propTypes2.default.bool // 是否使用clear组件
};
Textarea.defaultProps = {
    placeholder: '请输入',
    defaultValue: '',
    err: false,
    maxLength: 50,
    showCounter: true,
    onChange: function onChange() {},
    onFocus: function onFocus() {},
    onBlur: function onBlur() {},

    useClear: true
};
;

exports.default = Textarea;
module.exports = exports['default'];