cpui-components
Version:
201 lines (164 loc) • 7.83 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Paginator = 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 _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 _NextPageLink = require('./NextPageLink');
var _PrevPageLink = require('./PrevPageLink');
var _PageLinks = require('./PageLinks');
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 Paginator = exports.Paginator = function (_Component) {
_inherits(Paginator, _Component);
function Paginator(props) {
_classCallCheck(this, Paginator);
var _this = _possibleConstructorReturn(this, (Paginator.__proto__ || Object.getPrototypeOf(Paginator)).call(this, props));
_this.changePageToPrev = _this.changePageToPrev.bind(_this);
_this.changePageToNext = _this.changePageToNext.bind(_this);
_this.onPageLinkClick = _this.onPageLinkClick.bind(_this);
return _this;
}
_createClass(Paginator, [{
key: 'isFirstPage',
value: function isFirstPage() {
return this.getPage() === 0;
}
}, {
key: 'isLastPage',
value: function isLastPage() {
return this.getPage() === this.getPageCount() - 1;
}
}, {
key: 'getPageCount',
value: function getPageCount() {
return Math.ceil(this.props.totalRecords / this.props.rows) || 1;
}
}, {
key: 'calculatePageLinkBoundaries',
value: function calculatePageLinkBoundaries() {
var numberOfPages = this.getPageCount();
var visiblePages = Math.min(this.props.pageLinkSize, numberOfPages);
//calculate range, keep current in middle if necessary
var start = Math.max(0, this.getPage() - 3);
var end = Math.min(numberOfPages - 1, start + visiblePages - 1);
//check when approaching to last page
var delta = this.props.pageLinkSize - (end - start + 1);
start = Math.max(0, start - delta);
return [start, end];
}
}, {
key: 'updatePageLinks',
value: function updatePageLinks() {
var pageLinks = [];
var boundaries = this.calculatePageLinkBoundaries();
var start = boundaries[0];
var end = boundaries[1];
for (var i = start; i <= end; i++) {
pageLinks.push(i + 1);
}
return pageLinks;
}
}, {
key: 'changePage',
value: function changePage(first, rows) {
var pc = this.getPageCount();
var p = Math.floor(first / rows);
if (p >= 0 && p < pc) {
var newPageState = {
first: first,
rows: rows,
page: p,
pageCount: pc
};
if (this.props.onPageChange) {
this.props.onPageChange(newPageState);
}
}
}
}, {
key: 'getPage',
value: function getPage() {
return Math.floor(this.props.first / this.props.rows);
}
}, {
key: 'changePageToPrev',
value: function changePageToPrev(event) {
this.changePage(this.props.first - this.props.rows, this.props.rows);
event.preventDefault();
}
}, {
key: 'onPageLinkClick',
value: function onPageLinkClick(event) {
this.changePage((event.value - 1) * this.props.rows, this.props.rows);
}
}, {
key: 'changePageToNext',
value: function changePageToNext(event) {
this.changePage(this.props.first + this.props.rows, this.props.rows);
event.preventDefault();
}
}, {
key: 'render',
value: function render() {
var _this2 = this;
var className = (0, _classnames2.default)('Pagination cp-Pagination', this.props.className);
var paginatorElements = this.props.template.split(' ').map(function (value) {
var key = value.trim();
var element = void 0;
switch (key) {
case 'PrevPageLink':
element = _react2.default.createElement(_PrevPageLink.PrevPageLink, { key: key, onClick: _this2.changePageToPrev, disabled: _this2.isFirstPage() });
break;
case 'NextPageLink':
element = _react2.default.createElement(_NextPageLink.NextPageLink, { key: key, onClick: _this2.changePageToNext, disabled: _this2.isLastPage() });
break;
case 'PageLinks':
element = _react2.default.createElement(_PageLinks.PageLinks, { key: key, value: _this2.updatePageLinks(), page: _this2.getPage() + 1, onClick: _this2.onPageLinkClick,
pageLinkSize: _this2.props.pageLinkSize, totalRecords: _this2.props.totalRecords, rows: _this2.props.rows });
break;
default:
element = null;
break;
}
return element;
});
return _react2.default.createElement(
'div',
{ className: className, style: this.props.style },
paginatorElements
);
}
}]);
return Paginator;
}(_react.Component);
Paginator.defaultProps = {
totalRecords: 0,
rows: 0,
first: 0,
pageLinkSize: 8,
rowsPerPageOptions: null,
style: null,
className: null,
template: 'PrevPageLink PageLinks NextPageLink',
onPageChange: null
};
Paginator.propsTypes = {
totalRecords: _propTypes2.default.number,
rows: _propTypes2.default.number,
first: _propTypes2.default.number,
pageLinkSize: _propTypes2.default.number,
rowsPerPageOptions: _propTypes2.default.array,
style: _propTypes2.default.object,
className: _propTypes2.default.string,
template: _propTypes2.default.string,
onPageChange: _propTypes2.default.func
};