/**
 * ldesign v0.3.13
 * (c) 2023 ldesign
 * @license MIT
 */

import { ref, computed, watch, onBeforeMount } from 'vue';
import { on, off } from '../../utils/dom.js';
import '../../_chunks/dep-512eb181.js';
import 'lodash/isString';
import 'lodash/isFunction';
import 'lodash/isArray';
import '../../utils/easing.js';

function useAffix(props) {
  var tableContentRef = ref();
  var affixHeaderRef = ref();
  var affixFooterRef = ref();
  var horizontalScrollbarRef = ref();
  var paginationRef = ref();
  var showAffixHeader = ref(true);
  var showAffixFooter = ref(true);
  var showAffixPagination = ref(true);
  var isVirtualScroll = computed(function () {
    return props.scroll && props.scroll.type === "virtual" && (props.scroll.threshold || 100) < props.data.length;
  });
  var isAffixed = computed(function () {
    return !!(props.headerAffixedTop || props.footerAffixedBottom || props.horizontalScrollAffixedBottom);
  });
  var lastScrollLeft = 0;
  var onHorizontalScroll = function onHorizontalScroll(scrollElement) {
    if (!isAffixed.value && !isVirtualScroll.value) return;
    var target = scrollElement;
    if (!target && tableContentRef.value) {
      lastScrollLeft = 0;
      target = tableContentRef.value;
    }
    if (!target) return;
    var left = target.scrollLeft;
    if (lastScrollLeft === left) return;
    lastScrollLeft = left;
    var toUpdateScrollElement = [tableContentRef.value, affixHeaderRef.value, affixFooterRef.value, horizontalScrollbarRef.value];
    for (var i = 0, len = toUpdateScrollElement.length; i < len; i++) {
      if (toUpdateScrollElement[i] && scrollElement !== toUpdateScrollElement[i]) toUpdateScrollElement[i].scrollLeft = left;
    }
  };
  var isAffixedBottomElementShow = function isAffixedBottomElementShow(elementRect, tableRect, headerHeight) {
    return tableRect.top + headerHeight < elementRect.top && elementRect.top > elementRect.height;
  };
  var getOffsetTop = function getOffsetTop(props2) {
    if (typeof props2 === "boolean") return 0;
    return props2.offsetTop || 0;
  };
  var updateAffixHeaderOrFooter = function updateAffixHeaderOrFooter() {
    var _tableContentRef$valu, _tableContentRef$valu2, _tableContentRef$valu3, _affixFooterRef$value;
    if (!isAffixed.value && !isVirtualScroll.value) return;
    var pos = (_tableContentRef$valu = tableContentRef.value) === null || _tableContentRef$valu === void 0 ? void 0 : _tableContentRef$valu.getBoundingClientRect();
    var headerRect = (_tableContentRef$valu2 = tableContentRef.value) === null || _tableContentRef$valu2 === void 0 ? void 0 : (_tableContentRef$valu3 = _tableContentRef$valu2.querySelector("thead")) === null || _tableContentRef$valu3 === void 0 ? void 0 : _tableContentRef$valu3.getBoundingClientRect();
    var headerHeight = (headerRect === null || headerRect === void 0 ? void 0 : headerRect.height) || 0;
    var footerRect = (_affixFooterRef$value = affixFooterRef.value) === null || _affixFooterRef$value === void 0 ? void 0 : _affixFooterRef$value.getBoundingClientRect();
    if ((props.headerAffixedTop || isVirtualScroll.value) && affixHeaderRef.value) {
      var offsetTop = getOffsetTop(props.headerAffixProps || props.headerAffixedTop);
      var footerHeight = (footerRect === null || footerRect === void 0 ? void 0 : footerRect.height) || 0;
      var r = Math.abs(pos.top) < pos.height - headerHeight - offsetTop - footerHeight;
      if (isVirtualScroll.value) r = pos.top > -1 * headerRect.height;
      showAffixHeader.value = r;
    }
    if (props.footerAffixedBottom && affixFooterRef !== null && affixFooterRef !== void 0 && affixFooterRef.value) {
      showAffixFooter.value = isAffixedBottomElementShow(footerRect, pos, headerHeight);
    } else if (props.horizontalScrollAffixedBottom && horizontalScrollbarRef !== null && horizontalScrollbarRef !== void 0 && horizontalScrollbarRef.value) {
      var horizontalScrollbarRect = horizontalScrollbarRef.value.getBoundingClientRect();
      showAffixFooter.value = isAffixedBottomElementShow(horizontalScrollbarRect, pos, headerHeight);
    }
    if (props.paginationAffixedBottom && paginationRef.value) {
      var pageRect = paginationRef.value.getBoundingClientRect();
      showAffixPagination.value = isAffixedBottomElementShow(pageRect, pos, headerHeight);
    }
  };
  var onDocumentScroll = function onDocumentScroll() {
    updateAffixHeaderOrFooter();
  };
  var onFootScroll = function onFootScroll() {
    onHorizontalScroll(affixFooterRef.value);
  };
  var onHeaderScroll = function onHeaderScroll() {
    onHorizontalScroll(affixHeaderRef.value);
  };
  var horizontalScrollbarScroll = function horizontalScrollbarScroll() {
    onHorizontalScroll(horizontalScrollbarRef.value);
  };
  var onTableContentScroll = function onTableContentScroll() {
    onHorizontalScroll(tableContentRef.value);
  };
  var onFootMouseEnter = function onFootMouseEnter() {
    on(affixFooterRef.value, "scroll", onFootScroll);
  };
  var onFootMouseLeave = function onFootMouseLeave() {
    off(affixFooterRef.value, "scroll", onFootScroll);
  };
  var onHeaderMouseEnter = function onHeaderMouseEnter() {
    on(affixHeaderRef.value, "scroll", onHeaderScroll);
  };
  var onHeaderMouseLeave = function onHeaderMouseLeave() {
    off(affixHeaderRef.value, "scroll", onHeaderScroll);
  };
  var onScrollbarMouseEnter = function onScrollbarMouseEnter() {
    on(horizontalScrollbarRef.value, "scroll", horizontalScrollbarScroll);
  };
  var onScrollbarMouseLeave = function onScrollbarMouseLeave() {
    off(horizontalScrollbarRef.value, "scroll", horizontalScrollbarScroll);
  };
  var onTableContentMouseEnter = function onTableContentMouseEnter() {
    on(tableContentRef.value, "scroll", onTableContentScroll);
  };
  var onTableContentMouseLeave = function onTableContentMouseLeave() {
    off(tableContentRef.value, "scroll", onTableContentScroll);
  };
  var addHorizontalScrollListeners = function addHorizontalScrollListeners() {
    if (affixHeaderRef.value) {
      on(affixHeaderRef.value, "mouseenter", onHeaderMouseEnter);
      on(affixHeaderRef.value, "mouseleave", onHeaderMouseLeave);
    }
    if (props.footerAffixedBottom && affixFooterRef.value) {
      on(affixFooterRef.value, "mouseenter", onFootMouseEnter);
      on(affixFooterRef.value, "mouseleave", onFootMouseLeave);
    }
    if (props.horizontalScrollAffixedBottom && horizontalScrollbarRef.value) {
      on(horizontalScrollbarRef.value, "mouseenter", onScrollbarMouseEnter);
      on(horizontalScrollbarRef.value, "mouseleave", onScrollbarMouseLeave);
    }
    if ((isAffixed.value || isVirtualScroll.value) && tableContentRef.value) {
      on(tableContentRef.value, "mouseenter", onTableContentMouseEnter);
      on(tableContentRef.value, "mouseleave", onTableContentMouseLeave);
    }
  };
  var removeHorizontalScrollListeners = function removeHorizontalScrollListeners() {
    if (affixHeaderRef.value) {
      off(affixHeaderRef.value, "mouseenter", onHeaderMouseEnter);
      off(affixHeaderRef.value, "mouseleave", onHeaderMouseLeave);
    }
    if (affixFooterRef.value) {
      off(affixFooterRef.value, "mouseenter", onFootMouseEnter);
      off(affixFooterRef.value, "mouseleave", onFootMouseLeave);
    }
    if (tableContentRef.value) {
      off(tableContentRef.value, "mouseenter", onTableContentMouseEnter);
      off(tableContentRef.value, "mouseleave", onTableContentMouseLeave);
    }
    if (horizontalScrollbarRef.value) {
      off(horizontalScrollbarRef.value, "mouseenter", onScrollbarMouseEnter);
      off(horizontalScrollbarRef.value, "mouseleave", onScrollbarMouseLeave);
    }
  };
  var addVerticalScrollListener = function addVerticalScrollListener() {
    if (!isAffixed.value && !props.paginationAffixedBottom) return;
    var timer = setTimeout(function () {
      if (isAffixed.value || props.paginationAffixedBottom) on(document, "scroll", onDocumentScroll);else off(document, "scroll", onDocumentScroll);
      clearTimeout(timer);
    });
  };
  watch([affixHeaderRef, affixFooterRef, horizontalScrollbarRef, tableContentRef], function () {
    addHorizontalScrollListeners();
    onHorizontalScroll();
    updateAffixHeaderOrFooter();
  });
  watch(isAffixed, addVerticalScrollListener);
  watch(function () {
    return [props.data, props.columns, props.headerAffixedTop, props.footerAffixedBottom, props.horizontalScrollAffixedBottom];
  }, function () {
    onHorizontalScroll();
  });
  onBeforeMount(function () {
    off(document, "scroll", onDocumentScroll);
    removeHorizontalScrollListeners();
  });
  var setTableContentRef = function setTableContentRef(tableContent) {
    tableContentRef.value = tableContent;
    addVerticalScrollListener();
  };
  return {
    showAffixHeader: showAffixHeader,
    showAffixFooter: showAffixFooter,
    showAffixPagination: showAffixPagination,
    affixHeaderRef: affixHeaderRef,
    affixFooterRef: affixFooterRef,
    horizontalScrollbarRef: horizontalScrollbarRef,
    paginationRef: paginationRef,
    onHorizontalScroll: onHorizontalScroll,
    setTableContentRef: setTableContentRef,
    updateAffixHeaderOrFooter: updateAffixHeaderOrFooter
  };
}

export { useAffix as default };
//# sourceMappingURL=useAffix.js.map
