@base-ui/react/scroll-area/thumb/ScrollAreaThumb.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";
'use client';

var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ScrollAreaThumb = void 0;
var React = _interopRequireWildcard(require("react"));
var _ScrollAreaRootContext = require("../root/ScrollAreaRootContext");
var _ScrollAreaScrollbarContext = require("../scrollbar/ScrollAreaScrollbarContext");
var _useRenderElement = require("../../internals/useRenderElement");
/**
 * The draggable part of the scrollbar that indicates the current scroll position.
 * Renders a `<div>` element.
 *
 * Documentation: [Base UI Scroll Area](https://base-ui.com/react/components/scroll-area)
 */
const ScrollAreaThumb = exports.ScrollAreaThumb = /*#__PURE__*/React.forwardRef(function ScrollAreaThumb(componentProps, forwardedRef) {
  const {
    render,
    className,
    style,
    ...elementProps
  } = componentProps;
  const {
    thumbYRef,
    thumbXRef,
    handlePointerDown,
    handlePointerMove,
    handlePointerUp,
    scrollingX,
    scrollingY,
    hasMeasuredScrollbar
  } = (0, _ScrollAreaRootContext.useScrollAreaRootContext)();
  const orientation = (0, _ScrollAreaScrollbarContext.useScrollAreaScrollbarContext)();
  const vertical = orientation === 'vertical';
  const state = {
    scrolling: vertical ? scrollingY : scrollingX,
    orientation
  };
  const element = (0, _useRenderElement.useRenderElement)('div', componentProps, {
    ref: [forwardedRef, vertical ? thumbYRef : thumbXRef],
    state,
    props: [{
      onPointerDown: handlePointerDown,
      onPointerMove: handlePointerMove,
      onPointerUp: handlePointerUp,
      onPointerCancel: handlePointerUp,
      style: {
        visibility: hasMeasuredScrollbar ? undefined : 'hidden',
        ...(vertical ? {
          height: 'var(--scroll-area-thumb-height)'
        } : {
          width: 'var(--scroll-area-thumb-width)'
        })
      }
    }, elementProps]
  });
  return element;
});
if (process.env.NODE_ENV !== "production") ScrollAreaThumb.displayName = "ScrollAreaThumb";