@tamagui/react-native-web-lite/dist/cjs/ScrollView/ScrollViewBase.cjs

React Native for Web

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all) __defProp(target, name, {
    get: all[name],
    enumerable: true
  });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from)) if (!__hasOwnProp.call(to, key) && key !== except) __defProp(to, key, {
      get: () => from[key],
      enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable
    });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", {
  value: mod,
  enumerable: true
}) : target, mod));
var __toCommonJS = mod => __copyProps(__defProp({}, "__esModule", {
  value: true
}), mod);
var ScrollViewBase_exports = {};
__export(ScrollViewBase_exports, {
  ScrollViewBase: () => ScrollViewBase,
  default: () => ScrollViewBase_default
});
module.exports = __toCommonJS(ScrollViewBase_exports);
var import_react_native_web_internals = require("@tamagui/react-native-web-internals");
var React = __toESM(require("react"), 1);
var import_View = require("../View/index.cjs");
var import_jsx_runtime = require("react/jsx-runtime");
function normalizeScrollEvent(e) {
  return {
    nativeEvent: {
      contentOffset: {
        get x() {
          return e.target.scrollLeft;
        },
        get y() {
          return e.target.scrollTop;
        }
      },
      contentSize: {
        get height() {
          return e.target.scrollHeight;
        },
        get width() {
          return e.target.scrollWidth;
        }
      },
      layoutMeasurement: {
        get height() {
          return e.target.offsetHeight;
        },
        get width() {
          return e.target.offsetWidth;
        }
      }
    },
    timeStamp: Date.now()
  };
}
function shouldEmitScrollEvent(lastTick, eventThrottle) {
  const timeSinceLastTick = Date.now() - lastTick;
  return eventThrottle > 0 && timeSinceLastTick >= eventThrottle;
}
const ScrollViewBase = React.forwardRef((props, forwardedRef) => {
  const {
    onScroll,
    onTouchMove,
    onWheel,
    scrollEnabled = true,
    scrollEventThrottle = 0,
    showsHorizontalScrollIndicator,
    showsVerticalScrollIndicator,
    style,
    // strip RN-only props that shouldn't reach the DOM
    onMomentumScrollBegin,
    onMomentumScrollEnd,
    onScrollBeginDrag,
    onScrollEndDrag,
    ...rest
  } = props;
  const scrollState = React.useRef({
    isScrolling: false,
    scrollLastTick: 0
  });
  const scrollTimeout = React.useRef(null);
  const scrollRef = React.useRef(null);
  function createPreventableScrollHandler(handler) {
    return e => {
      if (scrollEnabled) {
        if (handler) {
          handler(e);
        }
      }
    };
  }
  function handleScroll(e) {
    e.stopPropagation();
    if (e.target === scrollRef.current) {
      e.persist();
      if (scrollTimeout.current != null) {
        clearTimeout(scrollTimeout.current);
      }
      scrollTimeout.current = setTimeout(() => {
        handleScrollEnd(e);
      }, 100);
      if (scrollState.current.isScrolling) {
        if (shouldEmitScrollEvent(scrollState.current.scrollLastTick, scrollEventThrottle)) {
          handleScrollTick(e);
        }
      } else {
        handleScrollStart(e);
      }
    }
  }
  function handleScrollStart(e) {
    scrollState.current.isScrolling = true;
    handleScrollTick(e);
  }
  function handleScrollTick(e) {
    scrollState.current.scrollLastTick = Date.now();
    if (onScroll) {
      onScroll(normalizeScrollEvent(e));
    }
  }
  function handleScrollEnd(e) {
    scrollState.current.isScrolling = false;
    if (onScroll) {
      onScroll(normalizeScrollEvent(e));
    }
  }
  const hideHorizontalScrollbar = showsHorizontalScrollIndicator === false;
  const hideVerticalScrollbar = showsVerticalScrollIndicator === false;
  return /* @__PURE__ */(0, import_jsx_runtime.jsx)(import_View.View, {
    ...rest,
    className: "_dsp_contents" + (hideHorizontalScrollbar ? " _hsb-x" : "") + (hideVerticalScrollbar ? " _hsb-y" : ""),
    onScroll: handleScroll,
    onTouchMove: createPreventableScrollHandler(onTouchMove),
    onWheel: createPreventableScrollHandler(onWheel),
    ref: (0, import_react_native_web_internals.useMergeRefs)(scrollRef, forwardedRef),
    style: [style,
    // @ts-ignore
    !scrollEnabled && styles.scrollDisabled]
  });
});
const styles = {
  scrollDisabled: {
    overflowX: "hidden",
    overflowY: "hidden",
    touchAction: "none"
  }
};
var ScrollViewBase_default = ScrollViewBase;