Sharkey/src/client/app/desktop/views/components/notes.vue

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Vue
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<template>
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<div class="mk-notes">
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<div class="newer-indicator" :style="{ top: $store.state.uiHeaderHeight + 'px' }" v-show="queue.length > 0"></div>
<slot name="empty" v-if="notes.length == 0 && !fetching && requestInitPromise == null"></slot>
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<mk-error v-if="!fetching && requestInitPromise != null" @retry="resolveInitPromise"/>
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<div class="placeholder" v-if="fetching">
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<template v-for="i in 10">
<mk-note-skeleton :key="i"/>
</template>
</div>
<!-- トランジションを有効にするとなぜかメモリリークする -->
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<component :is="!$store.state.device.reduceMotion ? 'transition-group' : 'div'" name="mk-notes" class="notes transition" tag="div" ref="notes">
<template v-for="(note, i) in _notes">
<x-note :note="note" :key="note.id" @update:note="onNoteUpdated(i, $event)" ref="note"/>
<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>
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<footer v-if="more">
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<button @click="loadMore" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }">
<template v-if="!moreFetching">{{ $t('@.load-more') }}</template>
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<template v-if="moreFetching"><fa icon="spinner" pulse fixed-width/></template>
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</button>
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</footer>
</div>
</template>
<script lang="ts">
import Vue from 'vue';
import i18n from '../../../i18n';
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import * as config from '../../../config';
import shouldMuteNote from '../../../common/scripts/should-mute-note';
import XNote from './note.vue';
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const displayLimit = 30;
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export default Vue.extend({
i18n: i18n(),
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components: {
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XNote
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},
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props: {
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more: {
type: Function,
required: false
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}
},
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data() {
return {
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requestInitPromise: null as () => Promise<any[]>,
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notes: [],
queue: [],
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fetching: true,
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moreFetching: false
};
},
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computed: {
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_notes(): any[] {
return (this.notes as any).map(note => {
const date = new Date(note.createdAt).getDate();
const month = new Date(note.createdAt).getMonth() + 1;
note._date = date;
note._datetext = this.$t('@.month-and-day').replace('{month}', month.toString()).replace('{day}', date.toString());
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return note;
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});
}
},
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mounted() {
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window.addEventListener('scroll', this.onScroll, { passive: true });
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},
beforeDestroy() {
window.removeEventListener('scroll', this.onScroll);
},
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methods: {
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isScrollTop() {
return window.scrollY <= 8;
},
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focus() {
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(this.$refs.notes as any).children[0].focus ? (this.$refs.notes as any).children[0].focus() : (this.$refs.notes as any).$el.children[0].focus();
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},
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onNoteUpdated(i, note) {
Vue.set((this as any).notes, i, note);
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},
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init(promiseGenerator: () => Promise<any[]>) {
this.requestInitPromise = promiseGenerator;
this.resolveInitPromise();
},
resolveInitPromise() {
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this.queue = [];
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this.notes = [];
this.fetching = true;
const promise = this.requestInitPromise();
promise.then(notes => {
this.notes = notes;
this.requestInitPromise = null;
this.fetching = false;
}, e => {
this.fetching = false;
});
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},
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prepend(note, silent = false) {
// 弾く
if (shouldMuteNote(this.$store.state.i, this.$store.state.settings, note)) return;
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// タブが非表示またはスクロール位置が最上部ではないならタイトルで通知
if (document.hidden || !this.isScrollTop()) {
this.$store.commit('pushBehindNote', note);
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}
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if (this.isScrollTop()) {
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// Prepend the note
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this.notes.unshift(note);
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// サウンドを再生する
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if (this.$store.state.device.enableSounds && !silent) {
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const sound = new Audio(`${config.url}/assets/post.mp3`);
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sound.volume = this.$store.state.device.soundVolume;
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sound.play();
}
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// 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);
}
} else {
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this.queue.push(note);
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}
},
append(note) {
this.notes.push(note);
},
tail() {
return this.notes[this.notes.length - 1];
},
releaseQueue() {
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this.queue.forEach(n => this.prepend(n, true));
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this.queue = [];
},
async loadMore() {
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if (this.more == null) return;
if (this.moreFetching) return;
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this.moreFetching = true;
await this.more();
this.moreFetching = false;
},
onScroll() {
if (this.isScrollTop()) {
this.releaseQueue();
}
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if (this.$store.state.settings.fetchOnScroll !== false) {
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const current = window.scrollY + window.innerHeight;
if (current > document.body.offsetHeight - 8) this.loadMore();
}
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}
}
});
</script>
<style lang="stylus" scoped>
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.mk-notes
.transition
.mk-notes-enter
.mk-notes-leave-to
opacity 0
transform translateY(-30px)
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> *
transition transform .3s ease, opacity .3s ease
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> .placeholder
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padding 32px
opacity 0.3
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> .notes
> .date
display block
margin 0
line-height 32px
font-size 14px
text-align center
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color var(--dateDividerFg)
background var(--dateDividerBg)
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border-bottom solid 1px var(--faceDivider)
span
margin 0 16px
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[data-icon]
margin-right 8px
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> .newer-indicator
position -webkit-sticky
position sticky
z-index 100
height 3px
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background var(--primary)
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> footer
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> button
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display block
margin 0
padding 16px
width 100%
text-align center
color #ccc
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background var(--face)
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border-top solid 1px var(--faceDivider)
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border-bottom-left-radius 6px
border-bottom-right-radius 6px
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&:hover
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box-shadow 0 0 0 100px inset rgba(0, 0, 0, 0.05)
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&:active
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box-shadow 0 0 0 100px inset rgba(0, 0, 0, 0.1)
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</style>