zent/tabs/lib/components/LazyMount.js

一套前端设计语言和基于React的实现

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports['default'] = undefined;

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; /**
                    * 保存domMount状态
                    */

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

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

var LazyMount = (_temp = _class = function (_Component) {
  _inherits(LazyMount, _Component);

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

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

    _this.state = {
      mounted: props.mountTrigger
    };
    return _this;
  }

  _createClass(LazyMount, [{
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      var mountTrigger = nextProps.mountTrigger;
      var mounted = this.state.mounted;

      if (mountTrigger && !mounted) {
        this.setState({
          mounted: true
        });
      }
    }
  }, {
    key: 'render',
    value: function render() {
      var children = this.props.children;
      var mounted = this.state.mounted;

      if (mounted) {
        return children;
      }
      return null;
    }
  }]);

  return LazyMount;
}(_react.Component), _class.propTypes = {
  mountTrigger: _react2['default'].PropTypes.bool
}, _class.defaultProps = {
  mountTrigger: false
}, _temp);
exports['default'] = LazyMount;
module.exports = exports['default'];