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notes.vue
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notes.vue
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<template>
<div class="ivaojijs" :class="{ shadow: $store.state.device.useShadow, round: $store.state.device.roundedCorners }">
<div class="empty" v-if="notes.length == 0 && !fetching && inited">{{ $t('@.no-notes') }}</div>
<mk-error v-if="!fetching && !inited" @retry="init()"/>
<div class="placeholder" v-if="fetching">
<template v-for="i in 10">
<mk-note-skeleton :key="i"/>
</template>
</div>
<header v-if="paged">
<button @click="reload">{{ $t('@.newest') }}</button>
</header>
<!-- トランジションを有効にするとなぜかメモリリークする -->
<component :is="!$store.state.device.reduceMotion ? 'transition-group' : 'div'" name="mk-notes" class="transition" tag="div">
<template v-for="(note, i) in _notes">
<mk-note :note="note" :key="note.id" @update:note="onNoteUpdated(i, $event)"/>
<p class="date" :key="note.id + '_date'" v-if="i != notes.length - 1 && note._date != _notes[i + 1]._date">
<span><fa icon="angle-up"/>{{ note._datetext }}</span>
<span><fa icon="angle-down"/>{{ _notes[i + 1]._datetext }}</span>
</p>
</template>
</component>
<footer v-if="cursor != null">
<button @click="more" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }">
<template v-if="moreFetching"><fa icon="spinner" pulse fixed-width/></template>
<template v-else-if="hasNextPage">{{ $t('@.next-page') }}</template>
<template v-else>{{ $t('@.load-more') }}</template>
</button>
</footer>
</div>
</template>
<script lang="ts">
import Vue from 'vue';
import i18n from '../../../i18n';
import shouldMuteNote from '../../../common/scripts/should-mute-note';
const displayLimit = 30;
export default Vue.extend({
i18n: i18n(),
props: {
makePromise: {
required: true
}
},
data() {
return {
notes: [],
queue: [],
fetching: true,
moreFetching: false,
paged: false,
inited: false,
cursor: null
};
},
computed: {
_notes(): any[] {
return (this.notes as any).map(note => {
const date = new Date(note.createdAt).getDate();
const month = new Date(note.createdAt).getMonth() + 1;
note._date = date;
note._datetext = this.$t('@.month-and-day').replace('{month}', month.toString()).replace('{day}', date.toString());
return note;
});
},
hasNextPage(): boolean {
return this.cursor != null && this.notes.length >= displayLimit * 2;
},
},
watch: {
queue(x) {
if (x.length > 0) {
this.$store.commit('indicate', true);
} else {
this.$store.commit('indicate', false);
}
}
},
created() {
this.init();
},
mounted() {
window.addEventListener('scroll', this.onScroll, { passive: true });
},
beforeDestroy() {
window.removeEventListener('scroll', this.onScroll);
},
methods: {
isScrollTop() {
return window.scrollY <= 8;
},
onNoteUpdated(i, note) {
Vue.set((this as any).notes, i, note);
},
reload() {
this.paged = false;
this.queue = [];
this.notes = [];
this.init();
},
init() {
this.fetching = true;
this.makePromise().then(x => {
if (Array.isArray(x)) {
this.notes = x;
} else {
this.notes = x.notes;
this.cursor = x.cursor;
}
this.inited = true;
this.fetching = false;
this.$emit('inited');
}, e => {
this.fetching = false;
});
},
more() {
if (this.cursor == null || this.moreFetching) return;
this.moreFetching = true;
this.makePromise(this.cursor).then(x => {
// 改ページ
if (this.hasNextPage) {
this.paged = true;
this.notes = x.notes;
this.queue = [];
window.scrollTo({
top: 0,
behavior: 'smooth'
});
} else {
this.notes = this.notes.concat(x.notes);
}
this.cursor = x.cursor;
this.moreFetching = false;
}, e => {
this.moreFetching = false;
});
},
prepend(note, silent = false) {
if (this.paged) return;
// 弾く
if (shouldMuteNote(this.$store.state.i, this.$store.state.settings, note)) return;
if (this.isScrollTop()) {
// Prepend the note
this.notes.unshift(note);
// オーバーフローしたら古い投稿は捨てる
if (this.notes.length >= displayLimit) {
this.notes = this.notes.slice(0, displayLimit);
this.cursor = this.notes[this.notes.length - 1].id
}
} else {
this.queue.push(note);
}
},
append(note) {
this.notes.push(note);
this.cursor = this.notes[this.notes.length - 1].id
},
releaseQueue() {
for (const n of this.queue) {
this.prepend(n, true);
}
this.queue = [];
},
onScroll() {
if (this.isScrollTop()) {
this.releaseQueue();
}
if (this.$store.state.settings.fetchOnScroll !== false) {
if (this.hasNextPage) return;
// 親要素が display none だったら弾く
// https://github.com/syuilo/misskey/issues/1569
// http://d.hatena.ne.jp/favril/20091105/1257403319
if (this.$el.offsetHeight == 0) return;
const current = window.scrollY + window.innerHeight;
if (current > document.body.offsetHeight - 8) this.more();
}
}
}
});
</script>
<style lang="stylus" scoped>
.ivaojijs
overflow hidden
background var(--face)
&.round
border-radius 8px
&.shadow
box-shadow 0 4px 16px rgba(#000, 0.1)
@media (min-width 500px)
box-shadow 0 8px 32px rgba(#000, 0.1)
> .empty
padding 16px
text-align center
color var(--text)
.transition
.mk-notes-enter
.mk-notes-leave-to
opacity 0
transform translateY(-30px)
> *
transition transform .3s ease, opacity .3s ease
> .date
display block
margin 0
line-height 32px
text-align center
font-size 0.9em
color var(--dateDividerFg)
background var(--dateDividerBg)
border-bottom solid var(--lineWidth) var(--faceDivider)
span
margin 0 16px
[data-icon]
margin-right 8px
> .placeholder
padding 16px
opacity 0.3
@media (min-width 500px)
padding 32px
> .empty
margin 0 auto
padding 32px
max-width 400px
text-align center
color var(--text)
> header, footer
text-align center
border-top solid var(--lineWidth) var(--faceDivider)
border-bottom solid var(--lineWidth) var(--faceDivider)
&:empty
display none
> button
margin 0
padding 16px
width 100%
color var(--text)
@media (min-width 500px)
padding 20px
&:disabled
opacity 0.7
</style>