@native-html/heuristic-table-plugin/lib/commonjs/helpers/computeColumnWidths.js

🔠 A 100% native component using heuristics to render tables in react-native-render-html

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = computeColumnWidths;

var _pipe = _interopRequireDefault(require("ramda/src/pipe"));

var _map = _interopRequireDefault(require("ramda/src/map"));

var _prop = _interopRequireDefault(require("ramda/src/prop"));

var _sum = _interopRequireDefault(require("ramda/src/sum"));

var _min = _interopRequireDefault(require("ramda/src/min"));

var _reduce = _interopRequireDefault(require("ramda/src/reduce"));

var _converge = _interopRequireDefault(require("ramda/src/converge"));

var _subtract = _interopRequireDefault(require("ramda/src/subtract"));

var _partialRight = _interopRequireDefault(require("ramda/src/partialRight"));

var _divide = _interopRequireDefault(require("ramda/src/divide"));

var _add = _interopRequireDefault(require("ramda/src/add"));

var _zip = _interopRequireDefault(require("ramda/src/zip"));

var _multiply = _interopRequireDefault(require("ramda/src/multiply"));

var _identity = _interopRequireDefault(require("ramda/src/identity"));

var _reduceColumnConstraints = _interopRequireDefault(require("./reduceColumnConstraints"));

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

const mapMinWidths = (0, _map.default)((0, _prop.default)('minWidth'));
const mapspreads = (0, _map.default)((0, _prop.default)('spread')); // Compute the normal content density for each column,
// that is content density with the zero reference as
// the shortest column.

const mapNormalContentDensity = (0, _converge.default)((m, list) => {
  return (0, _map.default)((0, _partialRight.default)(_subtract.default, [m]))(list);
}, [(0, _reduce.default)(_min.default, Infinity), _identity.default]);
const weightContentDensity = (0, _converge.default)((s, list) => {
  return (0, _map.default)((0, _partialRight.default)(_divide.default, [s]))(list);
}, [_sum.default, _identity.default]);
const mapWeightedColumnCoeffs = (0, _pipe.default)((0, _map.default)((0, _prop.default)('contentDensity')), mapNormalContentDensity, weightContentDensity);
const totalMinWidths = (0, _pipe.default)(mapMinWidths, _sum.default);

function computeColumnWidths(display) {
  const contentWidth = display.contentWidth;
  let shouldClampWidth = !display.forceStretch;
  const columnConstraints = (0, _reduceColumnConstraints.default)(display.cells);
  const minWidths = mapMinWidths(columnConstraints);
  const spreads = mapspreads(columnConstraints);
  const sumOfMinWidths = totalMinWidths(columnConstraints);

  if (contentWidth < sumOfMinWidths) {
    return minWidths;
  }

  const widthToAssign = contentWidth - sumOfMinWidths;
  const clampWidths = (0, _pipe.default)((0, _zip.default)(spreads), (0, _map.default)((0, _reduce.default)(_min.default, Infinity)));
  const columns = (0, _pipe.default)(mapWeightedColumnCoeffs, (0, _map.default)((0, _multiply.default)(widthToAssign)), (0, _zip.default)(minWidths), (0, _map.default)((0, _reduce.default)(_add.default, 0)), shouldClampWidth ? clampWidths : _identity.default)(columnConstraints);
  return columns;
}
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