misskey/packages/frontend/src/components/MkFoldableSection.vue
2023-04-01 13:42:40 +09:00

155 lines
3.4 KiB
Vue

<template>
<div 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>
<button class="_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
:name="defaultStore.state.animation ? 'folder-toggle' : ''"
@enter="enter"
@after-enter="afterEnter"
@leave="leave"
@after-leave="afterLeave"
>
<div v-show="showBody">
<slot></slot>
</div>
</Transition>
</div>
</template>
<script lang="ts">
import { defineComponent } 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;
},
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;
},
},
});
</script>
<style lang="scss" scoped>
.folder-toggle-enter-active, .folder-toggle-leave-active {
overflow-y: clip;
transition: opacity 0.5s, height 0.5s !important;
}
.folder-toggle-enter-from {
opacity: 0;
}
.folder-toggle-leave-to {
opacity: 0;
}
.ssazuxis {
position: relative;
> header {
display: flex;
position: relative;
z-index: 10;
position: sticky;
top: var(--stickyTop, 0px);
-webkit-backdrop-filter: var(--blur, blur(8px));
backdrop-filter: var(--blur, blur(20px));
> .title {
display: grid;
place-content: center;
margin: 0;
padding: 12px 16px 12px 0;
}
> .divider {
flex: 1;
margin: auto;
height: 1px;
background: var(--divider);
}
> button {
padding: 12px 0 12px 16px;
}
}
}
@container (max-width: 500px) {
.ssazuxis {
> header {
> .title {
padding: 8px 10px 8px 0;
}
}
}
}
</style>