136 lines
4.8 KiB
JavaScript
136 lines
4.8 KiB
JavaScript
import { defineComponent, shallowRef, ref, computed, watch, onMounted, watchEffect, openBlock, createElementBlock, normalizeClass, unref, normalizeStyle, createElementVNode, renderSlot, nextTick } from 'vue';
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import { useWindowSize, useElementBounding, useEventListener } from '@vueuse/core';
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import { affixProps, affixEmits } from './affix.mjs';
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import _export_sfc from '../../../_virtual/plugin-vue_export-helper.mjs';
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import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
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import { getScrollContainer } from '../../../utils/dom/scroll.mjs';
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import { addUnit } from '../../../utils/dom/style.mjs';
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import { CHANGE_EVENT } from '../../../constants/event.mjs';
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import { throwError } from '../../../utils/error.mjs';
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const COMPONENT_NAME = "ElAffix";
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const __default__ = defineComponent({
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name: COMPONENT_NAME
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});
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const _sfc_main = /* @__PURE__ */ defineComponent({
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...__default__,
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props: affixProps,
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emits: affixEmits,
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setup(__props, { expose, emit }) {
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const props = __props;
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const ns = useNamespace("affix");
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const target = shallowRef();
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const root = shallowRef();
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const scrollContainer = shallowRef();
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const { height: windowHeight } = useWindowSize();
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const {
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height: rootHeight,
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width: rootWidth,
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top: rootTop,
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bottom: rootBottom,
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update: updateRoot
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} = useElementBounding(root, { windowScroll: false });
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const targetRect = useElementBounding(target);
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const fixed = ref(false);
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const scrollTop = ref(0);
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const transform = ref(0);
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const rootStyle = computed(() => {
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return {
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height: fixed.value ? `${rootHeight.value}px` : "",
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width: fixed.value ? `${rootWidth.value}px` : ""
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};
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});
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const affixStyle = computed(() => {
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if (!fixed.value)
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return {};
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const offset = props.offset ? addUnit(props.offset) : 0;
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return {
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height: `${rootHeight.value}px`,
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width: `${rootWidth.value}px`,
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top: props.position === "top" ? offset : "",
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bottom: props.position === "bottom" ? offset : "",
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transform: transform.value ? `translateY(${transform.value}px)` : "",
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zIndex: props.zIndex
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};
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});
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const update = () => {
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if (!scrollContainer.value)
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return;
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scrollTop.value = scrollContainer.value instanceof Window ? document.documentElement.scrollTop : scrollContainer.value.scrollTop || 0;
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const { position, target: target2, offset } = props;
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const rootHeightOffset = offset + rootHeight.value;
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if (position === "top") {
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if (target2) {
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const difference = targetRect.bottom.value - rootHeightOffset;
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fixed.value = offset > rootTop.value && targetRect.bottom.value > 0;
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transform.value = difference < 0 ? difference : 0;
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} else {
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fixed.value = offset > rootTop.value;
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}
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} else if (target2) {
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const difference = windowHeight.value - targetRect.top.value - rootHeightOffset;
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fixed.value = windowHeight.value - offset < rootBottom.value && windowHeight.value > targetRect.top.value;
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transform.value = difference < 0 ? -difference : 0;
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} else {
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fixed.value = windowHeight.value - offset < rootBottom.value;
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}
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};
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const updateRootRect = async () => {
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if (!fixed.value) {
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updateRoot();
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return;
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}
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fixed.value = false;
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await nextTick();
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updateRoot();
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fixed.value = true;
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};
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const handleScroll = async () => {
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updateRoot();
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await nextTick();
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emit("scroll", {
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scrollTop: scrollTop.value,
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fixed: fixed.value
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});
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};
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watch(fixed, (val) => emit(CHANGE_EVENT, val));
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onMounted(() => {
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var _a;
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if (props.target) {
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target.value = (_a = document.querySelector(props.target)) != null ? _a : void 0;
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if (!target.value)
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throwError(COMPONENT_NAME, `Target does not exist: ${props.target}`);
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} else {
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target.value = document.documentElement;
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}
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scrollContainer.value = getScrollContainer(root.value, true);
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updateRoot();
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});
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useEventListener(scrollContainer, "scroll", handleScroll);
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watchEffect(update);
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expose({
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update,
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updateRoot: updateRootRect
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});
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return (_ctx, _cache) => {
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return openBlock(), createElementBlock("div", {
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ref_key: "root",
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ref: root,
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class: normalizeClass(unref(ns).b()),
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style: normalizeStyle(unref(rootStyle))
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}, [
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createElementVNode("div", {
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class: normalizeClass({ [unref(ns).m("fixed")]: fixed.value }),
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style: normalizeStyle(unref(affixStyle))
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}, [
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renderSlot(_ctx.$slots, "default")
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], 6)
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], 6);
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};
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}
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});
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var Affix = /* @__PURE__ */ _export_sfc(_sfc_main, [["__file", "affix.vue"]]);
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export { Affix as default };
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//# sourceMappingURL=affix2.mjs.map
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