@base-ui/react/slider/utils/getPushedThumbValues.js

Base UI is a library of headless ('unstyled') React components and low-level hooks. You gain complete control over your app's CSS and accessibility features.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getPushedThumbValues = getPushedThumbValues;
var _clamp = require("../../internals/clamp");
/**
 * Returns a new array of slider values where attempting to move the thumb at `index`
 * beyond its neighbours "pushes" them while respecting `minStepsBetweenValues`.
 *
 * Positional arguments are deliberate: property names of an options object don't
 * minify, so passing them positionally keeps this internal helper smaller in the bundle.
 */
function getPushedThumbValues(values, index, nextValue, min, max, step, minStepsBetweenValues, initialValues) {
  const nextValues = values.slice();
  const minValueDifference = step * minStepsBetweenValues;
  const lastIndex = nextValues.length - 1;
  const baseInitialValues = initialValues ?? values;
  const indexMin = min + index * minValueDifference;
  const indexMax = max - (lastIndex - index) * minValueDifference;
  nextValues[index] = (0, _clamp.clamp)(nextValue, indexMin, indexMax);
  for (let i = index + 1; i <= lastIndex; i += 1) {
    const minAllowed = nextValues[i - 1] + minValueDifference;
    const maxAllowed = max - (lastIndex - i) * minValueDifference;
    const initialValue = baseInitialValues[i];
    let candidate = Math.max(nextValues[i], minAllowed);
    if (initialValue < candidate) {
      candidate = Math.max(initialValue, minAllowed);
    }
    nextValues[i] = (0, _clamp.clamp)(candidate, minAllowed, maxAllowed);
  }
  for (let i = index - 1; i >= 0; i -= 1) {
    const maxAllowed = nextValues[i + 1] - minValueDifference;
    const minAllowed = min + i * minValueDifference;
    const initialValue = baseInitialValues[i];
    let candidate = Math.min(nextValues[i], maxAllowed);
    if (initialValue > candidate) {
      candidate = Math.min(initialValue, maxAllowed);
    }
    nextValues[i] = (0, _clamp.clamp)(candidate, minAllowed, maxAllowed);
  }
  for (let i = 0; i <= lastIndex; i += 1) {
    nextValues[i] = Number(nextValues[i].toFixed(12));
  }
  return nextValues;
}