refactor(frontend): use composition api

packages/frontend/src/components/MkFoldableSection.vue

@@ -1,5 +1,5 @@
 <template>
-<div class="ssazuxis">
+<div ref="el" class="ssazuxis">
 	<header class="_button" :style="{ background: bg }" @click="showBody = !showBody">
 		<div class="title"><div><slot name="header"></slot></div></div>
 		<div class="divider"></div>
@@ -22,80 +22,67 @@
 </div>
 </template>
 
-<script lang="ts">
-import { defineComponent } from 'vue';
+<script lang="ts" setup>
+import { onMounted, ref, shallowRef, watch } from 'vue';
 import tinycolor from 'tinycolor2';
 import { miLocalStorage } from '@/local-storage';
 import { defaultStore } from '@/store';
 
 const miLocalStoragePrefix = 'ui:folder:' as const;
 
-export default defineComponent({
-	props: {
-		expanded: {
-			type: Boolean,
-			required: false,
-			default: true,
-		},
-		persistKey: {
-			type: String,
-			required: false,
-			default: null,
-		},
-	},
-	data() {
-		return {
-			defaultStore,
-			bg: null,
-			showBody: (this.persistKey && miLocalStorage.getItem(`${miLocalStoragePrefix}${this.persistKey}`)) ? (miLocalStorage.getItem(`${miLocalStoragePrefix}${this.persistKey}`) === 't') : this.expanded,
-		};
-	},
-	watch: {
-		showBody() {
-			if (this.persistKey) {
-				miLocalStorage.setItem(`${miLocalStoragePrefix}${this.persistKey}`, this.showBody ? 't' : 'f');
-			}
-		},
-	},
-	mounted() {
-		function getParentBg(el: Element | null): string {
-			if (el == null || el.tagName === 'BODY') return 'var(--bg)';
-			const bg = el.style.background || el.style.backgroundColor;
-			if (bg) {
-				return bg;
-			} else {
-				return getParentBg(el.parentElement);
-			}
-		}
-		const rawBg = getParentBg(this.$el);
-		const bg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
-		bg.setAlpha(0.85);
-		this.bg = bg.toRgbString();
-	},
-	methods: {
-		toggleContent(show: boolean) {
-			this.showBody = show;
-		},
+const props = withDefaults(defineProps<{
+	expanded?: boolean;
+	persistKey?: string;
+}>(), {
+	expanded: true,
+});
 
-		enter(el) {
-			const elementHeight = el.getBoundingClientRect().height;
-			el.style.height = 0;
-			el.offsetHeight; // reflow
-			el.style.height = elementHeight + 'px';
-		},
-		afterEnter(el) {
-			el.style.height = null;
-		},
-		leave(el) {
-			const elementHeight = el.getBoundingClientRect().height;
-			el.style.height = elementHeight + 'px';
-			el.offsetHeight; // reflow
-			el.style.height = 0;
-		},
-		afterLeave(el) {
-			el.style.height = null;
-		},
-	},
+const el = shallowRef<HTMLDivElement>();
+const bg = ref<string | null>(null);
+const showBody = ref((props.persistKey && miLocalStorage.getItem(`${miLocalStoragePrefix}${props.persistKey}`)) ? (miLocalStorage.getItem(`${miLocalStoragePrefix}${props.persistKey}`) === 't') : props.expanded);
+
+watch(showBody, () => {
+	if (props.persistKey) {
+		miLocalStorage.setItem(`${miLocalStoragePrefix}${props.persistKey}`, showBody.value ? 't' : 'f');
+	}
+});
+
+function enter(el: Element) {
+	const elementHeight = el.getBoundingClientRect().height;
+	el.style.height = 0;
+	el.offsetHeight; // reflow
+	el.style.height = elementHeight + 'px';
+}
+
+function afterEnter(el: Element) {
+	el.style.height = null;
+}
+
+function leave(el: Element) {
+	const elementHeight = el.getBoundingClientRect().height;
+	el.style.height = elementHeight + 'px';
+	el.offsetHeight; // reflow
+	el.style.height = 0;
+}
+
+function afterLeave(el: Element) {
+	el.style.height = null;
+}
+
+onMounted(() => {
+	function getParentBg(el: HTMLElement | null): string {
+		if (el == null || el.tagName === 'BODY') return 'var(--bg)';
+		const bg = el.style.background || el.style.backgroundColor;
+		if (bg) {
+			return bg;
+		} else {
+			return getParentBg(el.parentElement);
+		}
+	}
+	const rawBg = getParentBg(el.value);
+	const _bg = tinycolor(rawBg.startsWith('var(') ? getComputedStyle(document.documentElement).getPropertyValue(rawBg.slice(4, -1)) : rawBg);
+	_bg.setAlpha(0.85);
+	bg.value = _bg.toRgbString();
 });
 </script>