redux-infinite-scroll
Version:
React infinite scroll component designed for a Redux data-flow.
292 lines (240 loc) • 10.4 kB
JavaScript
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("React"), require("ReactDOM"));
else if(typeof define === 'function' && define.amd)
define(["React", "ReactDOM"], factory);
else if(typeof exports === 'object')
exports["ReduxInfiniteScroll"] = factory(require("React"), require("ReactDOM"));
else
root["ReduxInfiniteScroll"] = factory(root["React"], root["ReactDOM"]);
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/* 0 */
/***/ function(module, exports, __webpack_require__) {
module.exports = __webpack_require__(1);
/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
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 = __webpack_require__(3);
var _react2 = _interopRequireDefault(_react);
var _reactDom = __webpack_require__(4);
var _reactDom2 = _interopRequireDefault(_reactDom);
var _DOMPositionUtils = __webpack_require__(2);
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; }
//import ImmutablePropTypes from 'react-immutable-proptypes';
var ReduxInfiniteScroll = function (_React$Component) {
_inherits(ReduxInfiniteScroll, _React$Component);
function ReduxInfiniteScroll(props) {
_classCallCheck(this, ReduxInfiniteScroll);
var _this = _possibleConstructorReturn(this, Object.getPrototypeOf(ReduxInfiniteScroll).call(this, props));
_this.scrollFunction = _this.scrollListener.bind(_this);
return _this;
}
_createClass(ReduxInfiniteScroll, [{
key: 'componentDidMount',
value: function componentDidMount() {
this.attachScrollListener();
}
}, {
key: 'componentDidUpdate',
value: function componentDidUpdate() {
this.attachScrollListener();
}
}, {
key: '_findElement',
value: function _findElement() {
return this.props.elementIsScrollable ? _reactDom2.default.findDOMNode(this) : window;
}
}, {
key: 'attachScrollListener',
value: function attachScrollListener() {
if (!this.props.hasMore || this.props.loadingMore) return;
var el = this._findElement();
el.addEventListener('scroll', this.scrollFunction, true);
el.addEventListener('resize', this.scrollFunction, true);
this.scrollListener();
}
}, {
key: '_elScrollListener',
value: function _elScrollListener() {
var el = _reactDom2.default.findDOMNode(this);
var topScrollPos = el.scrollTop;
var totalContainerHeight = el.scrollHeight;
var containerFixedHeight = el.offsetHeight;
var bottomScrollPos = topScrollPos + containerFixedHeight;
return totalContainerHeight - bottomScrollPos;
}
}, {
key: '_windowScrollListener',
value: function _windowScrollListener() {
var el = _reactDom2.default.findDOMNode(this);
var windowScrollTop = window.pageYOffset !== undefined ? window.pageYOffset : (document.documentElement || document.body.parentNode || document.body).scrollTop;
var elTotalHeight = (0, _DOMPositionUtils.topPosition)(el) + el.offsetHeight;
var currentBottomPosition = elTotalHeight - windowScrollTop - window.innerHeight;
return currentBottomPosition;
}
}, {
key: 'scrollListener',
value: function scrollListener() {
// This is to prevent the upcoming logic from toggling a load more before
// any data has been passed to the component
if (this._totalItemsSize() <= 0) return;
var bottomPosition = this.props.elementIsScrollable ? this._elScrollListener() : this._windowScrollListener();
if (bottomPosition < Number(this.props.threshold)) {
this.detachScrollListener();
this.props.loadMore();
}
}
}, {
key: 'detachScrollListener',
value: function detachScrollListener() {
var el = this._findElement();
el.removeEventListener('scroll', this.scrollFunction, true);
el.removeEventListener('resize', this.scrollFunction, true);
}
}, {
key: '_renderOptions',
value: function _renderOptions() {
var allItems = this.props.children.concat(this.props.items);
return allItems;
}
}, {
key: '_totalItemsSize',
value: function _totalItemsSize() {
var totalSize = void 0;
totalSize += this.props.children.size ? this.props.children.size : this.props.children.length;
totalSize += this.props.items.size ? this.props.items.size : this.props.items.length;
return totalSize;
}
}, {
key: 'componentWillUnmount',
value: function componentWillUnmount() {
this.detachScrollListener();
}
}, {
key: 'renderLoader',
value: function renderLoader() {
return this.props.loadingMore && this.props.showLoader ? this.props.loader : undefined;
}
}, {
key: '_assignHolderClass',
value: function _assignHolderClass() {
var additionalClass = void 0;
additionalClass = typeof this.props.className === 'function' ? this.props.className() : this.props.className;
return 'redux-infinite-scroll ' + additionalClass;
}
}, {
key: 'render',
value: function render() {
var Holder = this.props.holderType;
return _react2.default.createElement(
Holder,
{ className: this._assignHolderClass(), style: { height: this.props.containerHeight } },
this._renderOptions(),
this.renderLoader()
);
}
}]);
return ReduxInfiniteScroll;
}(_react2.default.Component);
exports.default = ReduxInfiniteScroll;
ReduxInfiniteScroll.propTypes = {
elementIsScrollable: _react2.default.PropTypes.bool,
containerHeight: _react2.default.PropTypes.oneOfType([_react2.default.PropTypes.number, _react2.default.PropTypes.string]),
threshold: _react2.default.PropTypes.number,
hasMore: _react2.default.PropTypes.bool,
loadingMore: _react2.default.PropTypes.bool,
loader: _react2.default.PropTypes.any,
showLoader: _react2.default.PropTypes.bool,
loadMore: _react2.default.PropTypes.func.isRequired,
items: _react2.default.PropTypes.oneOfType([
//ImmutablePropTypes.list,
_react2.default.PropTypes.array]),
children: _react2.default.PropTypes.oneOfType([
//ImmutablePropTypes.list,
_react2.default.PropTypes.array]),
holderType: _react2.default.PropTypes.string,
className: _react2.default.PropTypes.oneOfType([_react2.default.PropTypes.string, _react2.default.PropTypes.func])
};
ReduxInfiniteScroll.defaultProps = {
className: '',
elementIsScrollable: true,
containerHeight: '100%',
threshold: 100,
hasMore: true,
loadingMore: false,
loader: _react2.default.createElement(
'div',
{ style: { textAlign: 'center' } },
'Loading...'
),
showLoader: true,
holderType: 'div',
children: [],
items: []
};
/***/ },
/* 2 */
/***/ function(module, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.topPosition = topPosition;
function topPosition(domElt) {
if (!domElt) {
return 0;
}
return domElt.offsetTop + topPosition(domElt.offsetParent);
}
/***/ },
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module.exports = __WEBPACK_EXTERNAL_MODULE_3__;
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;