'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var vue = require('vue');
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var core = require('@vueuse/core');
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require('../../../utils/index.js');
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var error = require('../../../utils/error.js');
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const useBackTop = (props, emit, componentName) => {
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const el = vue.shallowRef();
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const container = vue.shallowRef();
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const visible = vue.ref(false);
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const handleScroll = () => {
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if (el.value)
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visible.value = el.value.scrollTop >= props.visibilityHeight;
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};
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const handleClick = (event) => {
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var _a;
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(_a = el.value) == null ? void 0 : _a.scrollTo({ top: 0, behavior: "smooth" });
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emit("click", event);
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};
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const handleScrollThrottled = core.useThrottleFn(handleScroll, 300, true);
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core.useEventListener(container, "scroll", handleScrollThrottled);
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vue.onMounted(() => {
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var _a;
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container.value = document;
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el.value = document.documentElement;
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if (props.target) {
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el.value = (_a = document.querySelector(props.target)) != null ? _a : void 0;
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if (!el.value) {
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error.throwError(componentName, `target does not exist: ${props.target}`);
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}
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container.value = el.value;
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}
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});
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return {
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visible,
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handleClick
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};
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};
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exports.useBackTop = useBackTop;
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//# sourceMappingURL=use-backtop.js.map
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