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<!--
SPDX-FileCopyrightText: syuilo and misskey-project
SPDX-License-Identifier: AGPL-3.0-only
-->
<template>
<div ref="rootEl" :class="$style.root">
<header :class="$style.header" class="_button" @click="showBody = !showBody">
<div :class="$style.title"><div><slot name="header"></slot></div></div>
<div :class="$style.divider"></div>
<button class="_button" :class="$style.button">
<template v-if="showBody"><i class="ti ti-chevron-up"></i></template>
<template v-else><i class="ti ti-chevron-down"></i></template>
</button>
</header>
<Transition
:enterActiveClass="prefer.s.animation ? $style.folderToggleEnterActive : ''"
:leaveActiveClass="prefer.s.animation ? $style.folderToggleLeaveActive : ''"
:enterFromClass="prefer.s.animation ? $style.folderToggleEnterFrom : ''"
:leaveToClass="prefer.s.animation ? $style.folderToggleLeaveTo : ''"
@enter="enter"
@afterEnter="afterEnter"
@leave="leave"
@afterLeave="afterLeave"
>
<div v-show="showBody">
<slot></slot>
</div>
</Transition>
</div>
</template>
<script lang="ts" setup>
import { onMounted, ref, useTemplateRef, watch } from 'vue';
import { miLocalStorage } from '@/local-storage.js';
import { prefer } from '@/preferences.js';
import { getBgColor } from '@/utility/get-bg-color.js';
const miLocalStoragePrefix = 'ui:folder:' as const;
const props = withDefaults(defineProps<{
expanded?: boolean;
persistKey?: string | null;
}>(), {
expanded: true,
persistKey: null,
});
const rootEl = useTemplateRef('rootEl');
const parentBg = ref<string | null>(null);
// eslint-disable-next-line vue/no-setup-props-reactivity-loss
const showBody = ref((props.persistKey && miLocalStorage.getItem(`${miLocalStoragePrefix}${props.persistKey}`)) ? (miLocalStorage.getItem(`${miLocalStoragePrefix}${props.persistKey}`) === 't') : props.expanded);
watch(showBody, () => {
if (props.persistKey) {
miLocalStorage.setItem(`${miLocalStoragePrefix}${props.persistKey}`, showBody.value ? 't' : 'f');
}
});
function enter(el: Element) {
if (!(el instanceof HTMLElement)) return;
const elementHeight = el.getBoundingClientRect().height;
el.style.height = '0';
el.offsetHeight; // reflow
el.style.height = `${elementHeight}px`;
}
function afterEnter(el: Element) {
if (!(el instanceof HTMLElement)) return;
el.style.height = '';
}
function leave(el: Element) {
if (!(el instanceof HTMLElement)) return;
const elementHeight = el.getBoundingClientRect().height;
el.style.height = `${elementHeight}px`;
el.offsetHeight; // reflow
el.style.height = '0';
}
function afterLeave(el: Element) {
if (!(el instanceof HTMLElement)) return;
el.style.height = '';
}
onMounted(() => {
parentBg.value = getBgColor(rootEl.value?.parentElement);
});
</script>
<style lang="scss" module>
.folderToggleEnterActive, .folderToggleLeaveActive {
overflow-y: clip;
transition: opacity 0.5s, height 0.5s !important;
}
.folderToggleEnterFrom, .folderToggleLeaveTo {
opacity: 0;
}
.root {
position: relative;
}
.header {
display: flex;
position: relative;
z-index: 10;
position: sticky;
top: var(--MI-stickyTop, 0px);
-webkit-backdrop-filter: var(--MI-blur, blur(8px));
backdrop-filter: var(--MI-blur, blur(20px));
background-color: color(from v-bind("parentBg ?? 'var(--MI_THEME-bg)'") srgb r g b / 0.85);
}
.title {
display: grid;
place-content: center;
margin: 0;
padding: 12px 16px 12px 0;
}
.divider {
flex: 1;
margin: auto;
height: 1px;
background: var(--MI_THEME-divider);
}
.button {
padding: 12px 0 12px 16px;
}
@container (max-width: 500px) {
.title {
padding: 8px 10px 8px 0;
}
}
</style>
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