189 lines
		
	
	
		
			7.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			189 lines
		
	
	
		
			7.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
(function (global, factory) {
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  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
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  typeof define === 'function' && define.amd ? define(['exports'], factory) :
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  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.FloatingUIUtilsDOM = {}));
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})(this, (function (exports) { 'use strict';
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  function hasWindow() {
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    return typeof window !== 'undefined';
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  }
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  function getNodeName(node) {
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    if (isNode(node)) {
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      return (node.nodeName || '').toLowerCase();
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    }
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    // Mocked nodes in testing environments may not be instances of Node. By
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    // returning `#document` an infinite loop won't occur.
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    // https://github.com/floating-ui/floating-ui/issues/2317
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    return '#document';
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  }
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  function getWindow(node) {
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    var _node$ownerDocument;
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    return (node == null || (_node$ownerDocument = node.ownerDocument) == null ? void 0 : _node$ownerDocument.defaultView) || window;
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  }
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  function getDocumentElement(node) {
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    var _ref;
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    return (_ref = (isNode(node) ? node.ownerDocument : node.document) || window.document) == null ? void 0 : _ref.documentElement;
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  }
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  function isNode(value) {
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    if (!hasWindow()) {
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      return false;
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    }
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    return value instanceof Node || value instanceof getWindow(value).Node;
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  }
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  function isElement(value) {
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    if (!hasWindow()) {
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      return false;
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    }
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    return value instanceof Element || value instanceof getWindow(value).Element;
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  }
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  function isHTMLElement(value) {
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    if (!hasWindow()) {
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      return false;
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    }
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    return value instanceof HTMLElement || value instanceof getWindow(value).HTMLElement;
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  }
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  function isShadowRoot(value) {
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    if (!hasWindow() || typeof ShadowRoot === 'undefined') {
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      return false;
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    }
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    return value instanceof ShadowRoot || value instanceof getWindow(value).ShadowRoot;
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  }
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  const invalidOverflowDisplayValues = /*#__PURE__*/new Set(['inline', 'contents']);
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  function isOverflowElement(element) {
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    const {
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      overflow,
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      overflowX,
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      overflowY,
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      display
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    } = getComputedStyle(element);
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    return /auto|scroll|overlay|hidden|clip/.test(overflow + overflowY + overflowX) && !invalidOverflowDisplayValues.has(display);
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  }
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  const tableElements = /*#__PURE__*/new Set(['table', 'td', 'th']);
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  function isTableElement(element) {
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    return tableElements.has(getNodeName(element));
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  }
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  const topLayerSelectors = [':popover-open', ':modal'];
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  function isTopLayer(element) {
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    return topLayerSelectors.some(selector => {
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      try {
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        return element.matches(selector);
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      } catch (_e) {
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        return false;
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      }
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    });
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  }
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  const transformProperties = ['transform', 'translate', 'scale', 'rotate', 'perspective'];
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  const willChangeValues = ['transform', 'translate', 'scale', 'rotate', 'perspective', 'filter'];
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  const containValues = ['paint', 'layout', 'strict', 'content'];
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  function isContainingBlock(elementOrCss) {
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    const webkit = isWebKit();
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    const css = isElement(elementOrCss) ? getComputedStyle(elementOrCss) : elementOrCss;
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    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
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    // https://drafts.csswg.org/css-transforms-2/#individual-transforms
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    return transformProperties.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) || willChangeValues.some(value => (css.willChange || '').includes(value)) || containValues.some(value => (css.contain || '').includes(value));
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  }
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  function getContainingBlock(element) {
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    let currentNode = getParentNode(element);
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    while (isHTMLElement(currentNode) && !isLastTraversableNode(currentNode)) {
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      if (isContainingBlock(currentNode)) {
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        return currentNode;
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      } else if (isTopLayer(currentNode)) {
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        return null;
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      }
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      currentNode = getParentNode(currentNode);
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    }
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    return null;
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  }
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  function isWebKit() {
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    if (typeof CSS === 'undefined' || !CSS.supports) return false;
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    return CSS.supports('-webkit-backdrop-filter', 'none');
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  }
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  const lastTraversableNodeNames = /*#__PURE__*/new Set(['html', 'body', '#document']);
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  function isLastTraversableNode(node) {
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    return lastTraversableNodeNames.has(getNodeName(node));
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  }
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  function getComputedStyle(element) {
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    return getWindow(element).getComputedStyle(element);
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  }
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  function getNodeScroll(element) {
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    if (isElement(element)) {
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      return {
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        scrollLeft: element.scrollLeft,
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        scrollTop: element.scrollTop
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      };
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    }
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    return {
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      scrollLeft: element.scrollX,
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      scrollTop: element.scrollY
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    };
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  }
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  function getParentNode(node) {
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    if (getNodeName(node) === 'html') {
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      return node;
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    }
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    const result =
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    // Step into the shadow DOM of the parent of a slotted node.
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    node.assignedSlot ||
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    // DOM Element detected.
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    node.parentNode ||
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    // ShadowRoot detected.
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    isShadowRoot(node) && node.host ||
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    // Fallback.
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    getDocumentElement(node);
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    return isShadowRoot(result) ? result.host : result;
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  }
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  function getNearestOverflowAncestor(node) {
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    const parentNode = getParentNode(node);
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    if (isLastTraversableNode(parentNode)) {
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      return node.ownerDocument ? node.ownerDocument.body : node.body;
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    }
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    if (isHTMLElement(parentNode) && isOverflowElement(parentNode)) {
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      return parentNode;
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    }
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    return getNearestOverflowAncestor(parentNode);
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  }
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  function getOverflowAncestors(node, list, traverseIframes) {
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    var _node$ownerDocument2;
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    if (list === void 0) {
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      list = [];
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    }
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    if (traverseIframes === void 0) {
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      traverseIframes = true;
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    }
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    const scrollableAncestor = getNearestOverflowAncestor(node);
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    const isBody = scrollableAncestor === ((_node$ownerDocument2 = node.ownerDocument) == null ? void 0 : _node$ownerDocument2.body);
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    const win = getWindow(scrollableAncestor);
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    if (isBody) {
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      const frameElement = getFrameElement(win);
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      return list.concat(win, win.visualViewport || [], isOverflowElement(scrollableAncestor) ? scrollableAncestor : [], frameElement && traverseIframes ? getOverflowAncestors(frameElement) : []);
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    }
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    return list.concat(scrollableAncestor, getOverflowAncestors(scrollableAncestor, [], traverseIframes));
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  }
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  function getFrameElement(win) {
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    return win.parent && Object.getPrototypeOf(win.parent) ? win.frameElement : null;
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  }
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  exports.getComputedStyle = getComputedStyle;
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  exports.getContainingBlock = getContainingBlock;
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  exports.getDocumentElement = getDocumentElement;
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  exports.getFrameElement = getFrameElement;
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  exports.getNearestOverflowAncestor = getNearestOverflowAncestor;
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  exports.getNodeName = getNodeName;
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  exports.getNodeScroll = getNodeScroll;
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  exports.getOverflowAncestors = getOverflowAncestors;
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  exports.getParentNode = getParentNode;
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  exports.getWindow = getWindow;
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  exports.isContainingBlock = isContainingBlock;
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  exports.isElement = isElement;
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  exports.isHTMLElement = isHTMLElement;
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  exports.isLastTraversableNode = isLastTraversableNode;
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  exports.isNode = isNode;
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  exports.isOverflowElement = isOverflowElement;
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  exports.isShadowRoot = isShadowRoot;
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  exports.isTableElement = isTableElement;
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  exports.isTopLayer = isTopLayer;
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  exports.isWebKit = isWebKit;
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}));
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