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frontend/node_modules/antd/es/back-top/index.js

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+"use client";
+
+import * as React from 'react';
+import VerticalAlignTopOutlined from "@ant-design/icons/es/icons/VerticalAlignTopOutlined";
+import classNames from 'classnames';
+import CSSMotion from 'rc-motion';
+import omit from "rc-util/es/omit";
+import getScroll from '../_util/getScroll';
+import { cloneElement } from '../_util/reactNode';
+import scrollTo from '../_util/scrollTo';
+import throttleByAnimationFrame from '../_util/throttleByAnimationFrame';
+import { devUseWarning } from '../_util/warning';
+import { ConfigContext } from '../config-provider';
+import useStyle from './style';
+const BackTop = props => {
+  const {
+    prefixCls: customizePrefixCls,
+    className,
+    rootClassName,
+    visibilityHeight = 400,
+    target,
+    onClick,
+    duration = 450
+  } = props;
+  const [visible, setVisible] = React.useState(visibilityHeight === 0);
+  const ref = React.useRef(null);
+  const getDefaultTarget = () => {
+    var _a;
+    return ((_a = ref.current) === null || _a === void 0 ? void 0 : _a.ownerDocument) || window;
+  };
+  const handleScroll = throttleByAnimationFrame(e => {
+    const scrollTop = getScroll(e.target);
+    setVisible(scrollTop >= visibilityHeight);
+  });
+  if (process.env.NODE_ENV !== 'production') {
+    const warning = devUseWarning('BackTop');
+    warning.deprecated(false, 'BackTop', 'FloatButton.BackTop');
+  }
+  React.useEffect(() => {
+    const getTarget = target || getDefaultTarget;
+    const container = getTarget();
+    handleScroll({
+      target: container
+    });
+    container === null || container === void 0 ? void 0 : container.addEventListener('scroll', handleScroll);
+    return () => {
+      handleScroll.cancel();
+      container === null || container === void 0 ? void 0 : container.removeEventListener('scroll', handleScroll);
+    };
+  }, [target]);
+  const scrollToTop = e => {
+    scrollTo(0, {
+      getContainer: target || getDefaultTarget,
+      duration
+    });
+    onClick === null || onClick === void 0 ? void 0 : onClick(e);
+  };
+  const {
+    getPrefixCls,
+    direction
+  } = React.useContext(ConfigContext);
+  const prefixCls = getPrefixCls('back-top', customizePrefixCls);
+  const rootPrefixCls = getPrefixCls();
+  const [wrapCSSVar, hashId, cssVarCls] = useStyle(prefixCls);
+  const classString = classNames(hashId, cssVarCls, prefixCls, {
+    [`${prefixCls}-rtl`]: direction === 'rtl'
+  }, className, rootClassName);
+  // fix https://fb.me/react-unknown-prop
+  const divProps = omit(props, ['prefixCls', 'className', 'rootClassName', 'children', 'visibilityHeight', 'target']);
+  const defaultElement = /*#__PURE__*/React.createElement("div", {
+    className: `${prefixCls}-content`
+  }, /*#__PURE__*/React.createElement("div", {
+    className: `${prefixCls}-icon`
+  }, /*#__PURE__*/React.createElement(VerticalAlignTopOutlined, null)));
+  return wrapCSSVar(/*#__PURE__*/React.createElement("div", Object.assign({}, divProps, {
+    className: classString,
+    onClick: scrollToTop,
+    ref: ref
+  }), /*#__PURE__*/React.createElement(CSSMotion, {
+    visible: visible,
+    motionName: `${rootPrefixCls}-fade`
+  }, ({
+    className: motionClassName
+  }) => cloneElement(props.children || defaultElement, ({
+    className: cloneCls
+  }) => ({
+    className: classNames(motionClassName, cloneCls)
+  })))));
+};
+if (process.env.NODE_ENV !== 'production') {
+  BackTop.displayName = 'BackTop';
+}
+export default BackTop;