refactoring

Resolve #7779

packages/client/src/components/global/sticky-container.vue

@@ -0,0 +1,74 @@
+<template>
+<div ref="rootEl">
+	<slot name="header"></slot>
+	<div ref="bodyEl">
+		<slot></slot>
+	</div>
+</div>
+</template>
+
+<script lang="ts">
+import { defineComponent, onMounted, onUnmounted, ref } from 'vue';
+
+export default defineComponent({
+	props: {
+		autoSticky: {
+			type: Boolean,
+			required: false,
+			default: false,
+		},
+	},
+
+	setup(props, context) {
+		const rootEl = ref<HTMLElement>(null);
+		const bodyEl = ref<HTMLElement>(null);
+
+		const calc = () => {
+			const currentStickyTop = getComputedStyle(rootEl.value).getPropertyValue('--stickyTop') || '0px';
+
+			const header = rootEl.value.children[0];
+			if (header === bodyEl.value) {
+				bodyEl.value.style.setProperty('--stickyTop', currentStickyTop);
+			} else {
+				bodyEl.value.style.setProperty('--stickyTop', `calc(${currentStickyTop} + ${header.offsetHeight}px)`);
+
+				if (props.autoSticky) {
+					header.style.setProperty('--stickyTop', currentStickyTop);
+					header.style.position = 'sticky';
+					header.style.top = 'var(--stickyTop)';
+					header.style.zIndex = '1';
+				}
+			}
+		};
+
+		onMounted(() => {
+			calc();
+
+			const observer = new MutationObserver(() => {
+				setTimeout(() => {
+					calc();
+				}, 100);
+			});
+
+			observer.observe(rootEl.value, {
+				attributes: false,
+				childList: true,
+				subtree: false,
+			});
+
+			onUnmounted(() => {
+				observer.disconnect();
+			});
+		});
+
+		return {
+			rootEl,
+			bodyEl,
+		};
+	},
+});
+</script>
+
+<style lang="scss" module>
+
+</style>