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Edit File: floating-ui.dom.umd.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@floating-ui/core')) :
  typeof define === 'function' && define.amd ? define(['exports', '@floating-ui/core'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.FloatingUIDOM = {}, global.FloatingUICore));
})(this, (function (exports, core) { 'use strict';

/**
   * Custom positioning reference element.
   * @see https://floating-ui.com/docs/virtual-elements
   */

const min = Math.min;
  const max = Math.max;
  const round = Math.round;
  const floor = Math.floor;
  const createCoords = v => ({
    x: v,
    y: v
  });

// https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
    // https://drafts.csswg.org/css-transforms-2/#individual-transforms
    return ['transform', 'translate', 'scale', 'rotate', 'perspective'].some(value => css[value] ? css[value] !== 'none' : false) || (css.containerType ? css.containerType !== 'normal' : false) || !webkit && (css.backdropFilter ? css.backdropFilter !== 'none' : false) || !webkit && (css.filter ? css.filter !== 'none' : false) || ['transform', 'translate', 'scale', 'rotate', 'perspective', 'filter'].some(value => (css.willChange || '').includes(value)) || ['paint', 'layout', 'strict', 'content'].some(value => (css.contain || '').includes(value));
  }
  function getContainingBlock(element) {
    let currentNode = getParentNode(element);
    while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
      if (isContainingBlock(currentNode)) {
        return currentNode;
      } else if (isTopLayer(currentNode)) {
        return null;
      }
      currentNode = getParentNode(currentNode);
    }
    return null;
  }
  function isWebKit() {
    if (typeof CSS === 'undefined' || !CSS.supports) return false;
    return CSS.supports('-webkit-backdrop-filter', 'none');
  }
  function isLastTraversableNode(node) {
    return ['html', 'body', '#document'].includes(getNodeName(node));
  }
  function getComputedStyle(element) {
    return getWindow(element).getComputedStyle(element);
  }
  function getNodeScroll(element) {
    if (isElement(element)) {
      return {
        scrollLeft: element.scrollLeft,
        scrollTop: element.scrollTop
      };
    }
    return {
      scrollLeft: element.scrollX,
      scrollTop: element.scrollY
    };
  }
  function getParentNode(node) {
    if (getNodeName(node) === 'html') {
      return node;
    }
    const result =
    // Step into the shadow DOM of the parent of a slotted node.
    node.assignedSlot ||
    // DOM Element detected.
    node.parentNode ||
    // ShadowRoot detected.
    isShadowRoot(node) && node.host ||
    // Fallback.
    getDocumentElement(node);
    return isShadowRoot(result) ? result.host : result;
  }
  function getNearestOverflowAncestor(node) {
    const parentNode = getParentNode(node);
    if (isLastTraversableNode(parentNode)) {
      return node.ownerDocument ? node.ownerDocument.body : node.body;
    }
    if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
      return parentNode;
    }
    return getNearestOverflowAncestor(parentNode);
  }
  function getOverflowAncestors(node, list, traverseIframes) {
    var _node$ownerDocument2;
    if (list === void 0) {
      list = [];
    }
    if (traverseIframes === void 0) {
      traverseIframes = true;
    }
    const scrollableAncestor = getNearestOverflowAncestor(node);
    const isBody = scrollableAncestor === ((_node$ownerDocument2 = node.ownerDocument) == null ? void 0 : _node$ownerDocument2.body);
    const win = getWindow(scrollableAncestor);
    if (isBody) {
      const frameElement = getFrameElement(win);
      return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : [], frameElement && traverseIframes ? getOverflowAncestors(frameElement) : []);
    }
    return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor, [], traverseIframes));
  }
  function getFrameElement(win) {
    return win.parent && Object.getPrototypeOf(win.parent) ? win.frameElement : null;
  }

function unwrapElement(element) {
    return !isElement(element) ? element.contextElement : element;
  }

function getScale(element) {
    const domElement = unwrapElement(element);
    if (!isHTMLElement(domElement)) {
      return createCoords(1);
    }
    const rect = domElement.getBoundingClientRect();
    const {
      width,
      height,
      $
    } = getCssDimensions(domElement);
    let x = ($ ? round(rect.width) : rect.width) / width;
    let y = ($ ? round(rect.height) : rect.height) / height;

// 0, NaN, or Infinity should always fallback to 1.

if (!x || !Number.isFinite(x)) {
      x = 1;
    }
    if (!y || !Number.isFinite(y)) {
      y = 1;
    }
    return {
      x,
      y
    };
  }

// If <html> has a CSS width greater than the viewport, then this will be
  // incorrect for RTL.
  function getWindowScrollBarX(element, rect) {
    const leftScroll = getNodeScroll(element).scrollLeft;
    if (!rect) {
      return getBoundingClientRect(getDocumentElement(element)).left + leftScroll;
    }
    return rect.left + leftScroll;
  }

function getClientRects(element) {
    return Array.from(element.getClientRects());
  }

// Gets the entire size of the scrollable document area, even extending outside
  // of the `<html>` and `<body>` rect bounds if horizontally scrollable.
  function getDocumentRect(element) {
    const html = getDocumentElement(element);
    const scroll = getNodeScroll(element);
    const body = element.ownerDocument.body;
    const width = max(html.scrollWidth, html.clientWidth, body.scrollWidth, body.clientWidth);
    const height = max(html.scrollHeight, html.clientHeight, body.scrollHeight, body.clientHeight);
    let x = -scroll.scrollLeft + getWindowScrollBarX(element);
    const y = -scroll.scrollTop;
    if (getComputedStyle(body).direction === 'rtl') {
      x += max(html.clientWidth, body.clientWidth) - width;
    }
    return {
      width,
      height,
      x,
      y
    };
  }

// Returns the inner client rect, subtracting scrollbars if present.
  function getInnerBoundingClientRect(element, strategy) {
    const clientRect = getBoundingClientRect(element, true, strategy === 'fixed');
    const top = clientRect.top + element.clientTop;
    const left = clientRect.left + element.clientLeft;
    const scale = isHTMLElement(element) ? getScale(element) : createCoords(1);
    const width = element.clientWidth * scale.x;
    const height = element.clientHeight * scale.y;
    const x = left * scale.x;
    const y = top * scale.y;
    return {
      width,
      height,
      x,
      y
    };
  }
  function getClientRectFromClippingAncestor(element, clippingAncestor, strategy) {
    let rect;
    if (clippingAncestor === 'viewport') {
      rect = getViewportRect(element, strategy);
    } else if (clippingAncestor === 'document') {
      rect = getDocumentRect(getDocumentElement(element));
    } else if (isElement(clippingAncestor)) {
      rect = getInnerBoundingClientRect(clippingAncestor, strategy);
    } else {
      const visualOffsets = getVisualOffsets(element);
      rect = {
        x: clippingAncestor.x - visualOffsets.x,
        y: clippingAncestor.y - visualOffsets.y,
        width: clippingAncestor.width,
        height: clippingAncestor.height
      };
    }
    return core.rectToClientRect(rect);
  }
  function hasFixedPositionAncestor(element, stopNode) {
    const parentNode = getParentNode(element);
    if (parentNode === stopNode || !isElement(parentNode) || isLastTraversableNode(parentNode)) {
      return false;
    }
    return getComputedStyle(parentNode).position === 'fixed' || hasFixedPositionAncestor(parentNode, stopNode);
  }

// A "clipping ancestor" is an `overflow` element with the characteristic of
  // clipping (or hiding) child elements. This returns all clipping ancestors
  // of the given element up the tree.
  function getClippingElementAncestors(element, cache) {
    const cachedResult = cache.get(element);
    if (cachedResult) {
      return cachedResult;
    }
    let result = getOverflowAncestors(element, [], false).filter(el => isElement(el) && getNodeName(el) !== 'body');
    let currentContainingBlockComputedStyle = null;
    const elementIsFixed = getComputedStyle(element).position === 'fixed';
    let currentNode = elementIsFixed ? getParentNode(element) : element;

// https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
    while (isElement(currentNode) && !isLastTraversableNode(currentNode)) {
      const computedStyle = getComputedStyle(currentNode);
      const currentNodeIsContaining = isContainingBlock(currentNode);
      if (!currentNodeIsContaining && computedStyle.position === 'fixed') {
        currentContainingBlockComputedStyle = null;
      }
      const shouldDropCurrentNode = elementIsFixed ? !currentNodeIsContaining && !currentContainingBlockComputedStyle : !currentNodeIsContaining && computedStyle.position === 'static' && !!currentContainingBlockComputedStyle && ['absolute', 'fixed'].includes(currentContainingBlockComputedStyle.position) || isOverflowElement(currentNode) && !currentNodeIsContaining && hasFixedPositionAncestor(element, currentNode);
      if (shouldDropCurrentNode) {
        // Drop non-containing blocks.
        result = result.filter(ancestor => ancestor !== currentNode);
      } else {
        // Record last containing block for next iteration.
        currentContainingBlockComputedStyle = computedStyle;
      }
      currentNode = getParentNode(currentNode);
    }
    cache.set(element, result);
    return result;
  }

// Gets the maximum area that the element is visible in due to any number of
  // clipping ancestors.
  function getClippingRect(_ref) {
    let {
      element,
      boundary,
      rootBoundary,
      strategy
    } = _ref;
    const elementClippingAncestors = boundary === 'clippingAncestors' ? isTopLayer(element) ? [] : getClippingElementAncestors(element, this._c) : [].concat(boundary);
    const clippingAncestors = [...elementClippingAncestors, rootBoundary];
    const firstClippingAncestor = clippingAncestors[0];
    const clippingRect = clippingAncestors.reduce((accRect, clippingAncestor) => {
      const rect = getClientRectFromClippingAncestor(element, clippingAncestor, strategy);
      accRect.top = max(rect.top, accRect.top);
      accRect.right = min(rect.right, accRect.right);
      accRect.bottom = min(rect.bottom, accRect.bottom);
      accRect.left = max(rect.left, accRect.left);
      return accRect;
    }, getClientRectFromClippingAncestor(element, firstClippingAncestor, strategy));
    return {
      width: clippingRect.right - clippingRect.left,
      height: clippingRect.bottom - clippingRect.top,
      x: clippingRect.left,
      y: clippingRect.top
    };
  }

function getDimensions(element) {
    const {
      width,
      height
    } = getCssDimensions(element);
    return {
      width,
      height
    };
  }

function getRectRelativeToOffsetParent(element, offsetParent, strategy) {
    const isOffsetParentAnElement = isHTMLElement(offsetParent);
    const documentElement = getDocumentElement(offsetParent);
    const isFixed = strategy === 'fixed';
    const rect = getBoundingClientRect(element, true, isFixed, offsetParent);
    let scroll = {
      scrollLeft: 0,
      scrollTop: 0
    };
    const offsets = createCoords(0);

// If the <body> scrollbar appears on the left (e.g. RTL systems). Use
    // Firefox with layout.scrollbar.side = 3 in about:config to test this.
    function setLeftRTLScrollbarOffset() {
      offsets.x = getWindowScrollBarX(documentElement);
    }
    if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
      if (getNodeName(offsetParent) !== 'body' || isOverflowElement(documentElement)) {
        scroll = getNodeScroll(offsetParent);
      }
      if (isOffsetParentAnElement) {
        const offsetRect = getBoundingClientRect(offsetParent, true, isFixed, offsetParent);
        offsets.x = offsetRect.x + offsetParent.clientLeft;
        offsets.y = offsetRect.y + offsetParent.clientTop;
      } else if (documentElement) {
        setLeftRTLScrollbarOffset();
      }
    }
    if (isFixed && !isOffsetParentAnElement && documentElement) {
      setLeftRTLScrollbarOffset();
    }
    const htmlOffset = documentElement && !isOffsetParentAnElement && !isFixed ? getHTMLOffset(documentElement, scroll) : createCoords(0);
    const x = rect.left + scroll.scrollLeft - offsets.x - htmlOffset.x;
    const y = rect.top + scroll.scrollTop - offsets.y - htmlOffset.y;
    return {
      x,
      y,
      width: rect.width,
      height: rect.height
    };
  }

function isStaticPositioned(element) {
    return getComputedStyle(element).position === 'static';
  }

function getTrueOffsetParent(element, polyfill) {
    if (!isHTMLElement(element) || getComputedStyle(element).position === 'fixed') {
      return null;
    }
    if (polyfill) {
      return polyfill(element);
    }
    let rawOffsetParent = element.offsetParent;

// Firefox returns the <html> element as the offsetParent if it's non-static,
    // while Chrome and Safari return the <body> element. The <body> element must
    // be used to perform the correct calculations even if the <html> element is
    // non-static.
    if (getDocumentElement(element) === rawOffsetParent) {
      rawOffsetParent = rawOffsetParent.ownerDocument.body;
    }
    return rawOffsetParent;
  }

// Gets the closest ancestor positioned element. Handles some edge cases,
  // such as table ancestors and cross browser bugs.
  function getOffsetParent(element, polyfill) {
    const win = getWindow(element);
    if (isTopLayer(element)) {
      return win;
    }
    if (!isHTMLElement(element)) {
      let svgOffsetParent = getParentNode(element);
      while (svgOffsetParent && !isLastTraversableNode(svgOffsetParent)) {
        if (isElement(svgOffsetParent) && !isStaticPositioned(svgOffsetParent)) {
          return svgOffsetParent;
        }
        svgOffsetParent = getParentNode(svgOffsetParent);
      }
      return win;
    }
    let offsetParent = getTrueOffsetParent(element, polyfill);
    while (offsetParent && isTableElement(offsetParent) && isStaticPositioned(offsetParent)) {
      offsetParent = getTrueOffsetParent(offsetParent, polyfill);
    }
    if (offsetParent && isLastTraversableNode(offsetParent) && isStaticPositioned(offsetParent) && !isContainingBlock(offsetParent)) {
      return win;
    }
    return offsetParent || getContainingBlock(element) || win;
  }

function isRTL(element) {
    return getComputedStyle(element).direction === 'rtl';
  }

const platform = {
    convertOffsetParentRelativeRectToViewportRelativeRect,
    getDocumentElement,
    getClippingRect,
    getOffsetParent,
    getElementRects,
    getClientRects,
    getDimensions,
    getScale,
    isElement,
    isRTL
  };

function rectsAreEqual(a, b) {
    return a.x === b.x && a.y === b.y && a.width === b.width && a.height === b.height;
  }

// https://samthor.au/2021/observing-dom/
  function observeMove(element, onMove) {
    let io = null;
    let timeoutId;
    const root = getDocumentElement(element);
    function cleanup() {
      var _io;
      clearTimeout(timeoutId);
      (_io = io) == null || _io.disconnect();
      io = null;
    }
    function refresh(skip, threshold) {
      if (skip === void 0) {
        skip = false;
      }
      if (threshold === void 0) {
        threshold = 1;
      }
      cleanup();
      const elementRectForRootMargin = element.getBoundingClientRect();
      const {
        left,
        top,
        width,
        height
      } = elementRectForRootMargin;
      if (!skip) {
        onMove();
      }
      if (!width || !height) {
        return;
      }
      const insetTop = floor(top);
      const insetRight = floor(root.clientWidth - (left + width));
      const insetBottom = floor(root.clientHeight - (top + height));
      const insetLeft = floor(left);
      const rootMargin = -insetTop + "px " + -insetRight + "px " + -insetBottom + "px " + -insetLeft + "px";
      const options = {
        rootMargin,
        threshold: max(0, min(1, threshold)) || 1
      };
      let isFirstUpdate = true;
      function handleObserve(entries) {
        const ratio = entries[0].intersectionRatio;
        if (ratio !== threshold) {
          if (!isFirstUpdate) {
            return refresh();
          }
          if (!ratio) {
            // If the reference is clipped, the ratio is 0. Throttle the refresh
            // to prevent an infinite loop of updates.
            timeoutId = setTimeout(() => {
              refresh(false, 1e-7);
            }, 1000);
          } else {
            refresh(false, ratio);
          }
        }
        if (ratio === 1 && !rectsAreEqual(elementRectForRootMargin, element.getBoundingClientRect())) {
          // It's possible that even though the ratio is reported as 1, the
          // element is not actually fully within the IntersectionObserver's root
          // area anymore. This can happen under performance constraints. This may
          // be a bug in the browser's IntersectionObserver implementation. To
          // work around this, we compare the element's bounding rect now with
          // what it was at the time we created the IntersectionObserver. If they
          // are not equal then the element moved, so we refresh.
          refresh();
        }
        isFirstUpdate = false;
      }

// Older browsers don't support a `document` as the root and will throw an
      // error.
      try {
        io = new IntersectionObserver(handleObserve, {
          ...options,
          // Handle <iframe>s
          root: root.ownerDocument
        });
      } catch (_e) {
        io = new IntersectionObserver(handleObserve, options);
      }
      io.observe(element);
    }
    refresh(true);
    return cleanup;
  }

/**
   * Automatically updates the position of the floating element when necessary.
   * Should only be called when the floating element is mounted on the DOM or
   * visible on the screen.
   * @returns cleanup function that should be invoked when the floating element is
   * removed from the DOM or hidden from the screen.
   * @see https://floating-ui.com/docs/autoUpdate
   */
  function autoUpdate(reference, floating, update, options) {
    if (options === void 0) {
      options = {};
    }
    const {
      ancestorScroll = true,
      ancestorResize = true,
      elementResize = typeof ResizeObserver === 'function',
      layoutShift = typeof IntersectionObserver === 'function',
      animationFrame = false
    } = options;
    const referenceEl = unwrapElement(reference);
    const ancestors = ancestorScroll || ancestorResize ? [...(referenceEl ? getOverflowAncestors(referenceEl) : []), ...getOverflowAncestors(floating)] : [];
    ancestors.forEach(ancestor => {
      ancestorScroll && ancestor.addEventListener('scroll', update, {
        passive: true
      });
      ancestorResize && ancestor.addEventListener('resize', update);
    });
    const cleanupIo = referenceEl && layoutShift ? observeMove(referenceEl, update) : null;
    let reobserveFrame = -1;
    let resizeObserver = null;
    if (elementResize) {
      resizeObserver = new ResizeObserver(_ref => {
        let [firstEntry] = _ref;
        if (firstEntry && firstEntry.target === referenceEl && resizeObserver) {
          // Prevent update loops when using the `size` middleware.
          // https://github.com/floating-ui/floating-ui/issues/1740
          resizeObserver.unobserve(floating);
          cancelAnimationFrame(reobserveFrame);
          reobserveFrame = requestAnimationFrame(() => {
            var _resizeObserver;
            (_resizeObserver = resizeObserver) == null || _resizeObserver.observe(floating);
          });
        }
        update();
      });
      if (referenceEl && !animationFrame) {
        resizeObserver.observe(referenceEl);
      }
      resizeObserver.observe(floating);
    }
    let frameId;
    let prevRefRect = animationFrame ? getBoundingClientRect(reference) : null;
    if (animationFrame) {
      frameLoop();
    }
    function frameLoop() {
      const nextRefRect = getBoundingClientRect(reference);
      if (prevRefRect && !rectsAreEqual(prevRefRect, nextRefRect)) {
        update();
      }
      prevRefRect = nextRefRect;
      frameId = requestAnimationFrame(frameLoop);
    }
    update();
    return () => {
      var _resizeObserver2;
      ancestors.forEach(ancestor => {
        ancestorScroll && ancestor.removeEventListener('scroll', update);
        ancestorResize && ancestor.removeEventListener('resize', update);
      });
      cleanupIo == null || cleanupIo();
      (_resizeObserver2 = resizeObserver) == null || _resizeObserver2.disconnect();
      resizeObserver = null;
      if (animationFrame) {
        cancelAnimationFrame(frameId);
      }
    };
  }

/**
   * Resolves with an object of overflow side offsets that determine how much the
   * element is overflowing a given clipping boundary on each side.
   * - positive = overflowing the boundary by that number of pixels
   * - negative = how many pixels left before it will overflow
   * - 0 = lies flush with the boundary
   * @see https://floating-ui.com/docs/detectOverflow
   */
  const detectOverflow = core.detectOverflow;

/**
   * Modifies the placement by translating the floating element along the
   * specified axes.
   * A number (shorthand for `mainAxis` or distance), or an axes configuration
   * object may be passed.
   * @see https://floating-ui.com/docs/offset
   */
  const offset = core.offset;

/**
   * Optimizes the visibility of the floating element by choosing the placement
   * that has the most space available automatically, without needing to specify a
   * preferred placement. Alternative to `flip`.
   * @see https://floating-ui.com/docs/autoPlacement
   */
  const autoPlacement = core.autoPlacement;

/**
   * Optimizes the visibility of the floating element by shifting it in order to
   * keep it in view when it will overflow the clipping boundary.
   * @see https://floating-ui.com/docs/shift
   */
  const shift = core.shift;

/**
   * Optimizes the visibility of the floating element by flipping the `placement`
   * in order to keep it in view when the preferred placement(s) will overflow the
   * clipping boundary. Alternative to `autoPlacement`.
   * @see https://floating-ui.com/docs/flip
   */
  const flip = core.flip;

/**
   * Provides data that allows you to change the size of the floating element —
   * for instance, prevent it from overflowing the clipping boundary or match the
   * width of the reference element.
   * @see https://floating-ui.com/docs/size
   */
  const size = core.size;

/**
   * Provides data to hide the floating element in applicable situations, such as
   * when it is not in the same clipping context as the reference element.
   * @see https://floating-ui.com/docs/hide
   */
  const hide = core.hide;

/**
   * Provides data to position an inner element of the floating element so that it
   * appears centered to the reference element.
   * @see https://floating-ui.com/docs/arrow
   */
  const arrow = core.arrow;

/**
   * Provides improved positioning for inline reference elements that can span
   * over multiple lines, such as hyperlinks or range selections.
   * @see https://floating-ui.com/docs/inline
   */
  const inline = core.inline;

/**
   * Built-in `limiter` that will stop `shift()` at a certain point.
   */
  const limitShift = core.limitShift;

/**
   * Computes the `x` and `y` coordinates that will place the floating element
   * next to a given reference element.
   */
  const computePosition = (reference, floating, options) => {
    // This caches the expensive `getClippingElementAncestors` function so that
    // multiple lifecycle resets re-use the same result. It only lives for a
    // single call. If other functions become expensive, we can add them as well.
    const cache = new Map();
    const mergedOptions = {
      platform,
      ...options
    };
    const platformWithCache = {
      ...mergedOptions.platform,
      _c: cache
    };
    return core.computePosition(reference, floating, {
      ...mergedOptions,
      platform: platformWithCache
    });
  };

exports.arrow = arrow;
  exports.autoPlacement = autoPlacement;
  exports.autoUpdate = autoUpdate;
  exports.computePosition = computePosition;
  exports.detectOverflow = detectOverflow;
  exports.flip = flip;
  exports.getOverflowAncestors = getOverflowAncestors;
  exports.hide = hide;
  exports.inline = inline;
  exports.limitShift = limitShift;
  exports.offset = offset;
  exports.platform = platform;
  exports.shift = shift;
  exports.size = size;

}));