@renderlesskit/react/dist/cjs/pagination/PaginationState.js

Collection of headless components/hooks that are accessible, composable, customizable from low level to build your own UI & Design System powered by Reakit

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.usePaginationState = void 0;

var _react = _interopRequireDefault(require("react"));

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

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

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { var _i = arr == null ? null : typeof Symbol !== "undefined" && arr[Symbol.iterator] || arr["@@iterator"]; if (_i == null) return; var _arr = []; var _n = true; var _d = false; var _s, _e; try { for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

var usePaginationState = function usePaginationState() {
  var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  var _props$defaultPage = props.defaultPage,
      defaultPage = _props$defaultPage === void 0 ? 1 : _props$defaultPage,
      currentPageProp = props.page,
      onChange = props.onChange,
      _props$count = props.count,
      count = _props$count === void 0 ? 1 : _props$count,
      _props$boundaryCount = props.boundaryCount,
      boundaryCount = _props$boundaryCount === void 0 ? 1 : _props$boundaryCount,
      _props$siblingCount = props.siblingCount,
      siblingCount = _props$siblingCount === void 0 ? 1 : _props$siblingCount;

  var _useControllableState = (0, _utils.useControllableState)({
    value: currentPageProp,
    defaultValue: defaultPage,
    onChange: onChange
  }),
      _useControllableState2 = _slicedToArray(_useControllableState, 2),
      currentPage = _useControllableState2[0],
      setCurrentPage = _useControllableState2[1];

  var startPages = range(1, Math.min(boundaryCount, count));
  var endPages = range(Math.max(count - boundaryCount + 1, boundaryCount + 1), count);
  var siblingsStart = Math.max(Math.min( // Natural start
  currentPage - siblingCount, // Lower boundary when page is high
  count - boundaryCount - siblingCount * 2 - 1), // Greater than startPages
  boundaryCount + 2);
  var siblingsEnd = Math.min(Math.max( // Natural end
  currentPage + siblingCount, // Upper boundary when page is low
  boundaryCount + siblingCount * 2 + 2), // Less than endPages
  endPages[0] - 2); // Page to render
  // e.g. pages = [1, 'start-ellipsis', 4, 5, 6, 'end-ellipsis', 10]

  var pages = [].concat(_toConsumableArray(startPages), _toConsumableArray(siblingsStart > boundaryCount + 2 ? ["start-ellipsis"] : boundaryCount + 1 < count - boundaryCount ? [boundaryCount + 1] : []), _toConsumableArray(range(siblingsStart, siblingsEnd)), _toConsumableArray(siblingsEnd < count - boundaryCount - 1 ? ["end-ellipsis"] : count - boundaryCount > boundaryCount ? [count - boundaryCount] : []), _toConsumableArray(endPages));

  var nextPage = _react.default.useCallback(function () {
    setCurrentPage(function (prevPage) {
      return prevPage + 1;
    });
  }, [setCurrentPage]);

  var prevPage = _react.default.useCallback(function () {
    setCurrentPage(function (prevPage) {
      return prevPage - 1;
    });
  }, [setCurrentPage]);

  var firstPage = _react.default.useCallback(function () {
    setCurrentPage(1);
  }, [setCurrentPage]);

  var lastPage = _react.default.useCallback(function () {
    setCurrentPage(count);
  }, [count, setCurrentPage]);

  var movePage = _react.default.useCallback(function (page) {
    if (page >= 1 && page <= count) setCurrentPage(page);
  }, [count, setCurrentPage]);

  return {
    pages: pages,
    currentPage: currentPage,
    isAtLastPage: currentPage >= count,
    isAtFirstPage: currentPage <= 1,
    nextPage: nextPage,
    prevPage: prevPage,
    movePage: movePage,
    firstPage: firstPage,
    lastPage: lastPage
  };
};

exports.usePaginationState = usePaginationState;

function range(start, end) {
  var length = end - start + 1;
  return Array.from({
    length: length
  }, function (_, i) {
    return start + i;
  });
}
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