260 lines
8.9 KiB
JavaScript
260 lines
8.9 KiB
JavaScript
import Status from '../status/status.vue'
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import timelineFetcher from '../../services/timeline_fetcher/timeline_fetcher.service.js'
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import Conversation from '../conversation/conversation.vue'
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import TimelineMenu from '../timeline_menu/timeline_menu.vue'
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import TimelineMenuTabs from '../timeline_menu_tabs/timeline_menu_tabs.vue'
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import TimelineQuickSettings from './timeline_quick_settings.vue'
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import { debounce, throttle, keyBy } from 'lodash'
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import { library } from '@fortawesome/fontawesome-svg-core'
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import { faCircleNotch, faCog } from '@fortawesome/free-solid-svg-icons'
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library.add(
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faCircleNotch,
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faCog
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)
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const Timeline = {
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props: [
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'timeline',
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'timelineName',
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'title',
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'userId',
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'listId',
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'tag',
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'embedded',
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'count',
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'pinnedStatusIds',
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'inProfile',
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'footerSlipgate' // reference to an element where we should put our footer
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],
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data () {
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return {
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paused: false,
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unfocused: false,
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bottomedOut: false,
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virtualScrollIndex: 0,
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blockingClicks: false
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}
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},
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components: {
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Status,
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Conversation,
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TimelineMenu,
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TimelineMenuTabs,
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TimelineQuickSettings
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},
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computed: {
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filteredVisibleStatuses () {
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return this.timeline.visibleStatuses.filter(status => this.timelineName !== 'user' || (status.id >= this.timeline.minId && status.id <= this.timeline.maxId))
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},
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filteredPinnedStatusIds () {
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return (this.pinnedStatusIds || []).filter(statusId => this.timeline.statusesObject[statusId])
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},
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newStatusCount () {
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return this.timeline.newStatusCount
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},
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showLoadButton () {
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return this.timeline.newStatusCount > 0 || this.timeline.flushMarker !== 0
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},
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loadButtonString () {
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if (this.timeline.flushMarker !== 0) {
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return this.$t('timeline.reload')
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} else {
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return `${this.$t('timeline.show_new')} (${this.newStatusCount})`
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}
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},
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classes () {
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let rootClasses = !this.embedded ? ['panel', 'panel-default'] : ['-nonpanel']
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if (this.blockingClicks) rootClasses = rootClasses.concat(['-blocked', '_misclick-prevention'])
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return {
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root: rootClasses,
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header: ['timeline-heading'].concat(!this.embedded ? ['panel-heading', '-sticky'] : []),
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body: ['timeline-body'].concat(!this.embedded ? ['panel-body'] : []),
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footer: ['timeline-footer'].concat(!this.embedded ? ['panel-footer'] : [])
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}
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},
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// id map of statuses which need to be hidden in the main list due to pinning logic
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pinnedStatusIdsObject () {
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return keyBy(this.pinnedStatusIds)
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},
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statusesToDisplay () {
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const amount = this.timeline.visibleStatuses.length
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const statusesPerSide = Math.ceil(Math.max(3, window.innerHeight / 80))
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const nonPinnedIndex = this.virtualScrollIndex - this.filteredPinnedStatusIds.length
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const min = Math.max(0, nonPinnedIndex - statusesPerSide)
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const max = Math.min(amount, nonPinnedIndex + statusesPerSide)
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return this.timeline.visibleStatuses.slice(min, max).map(_ => _.id)
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},
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virtualScrollingEnabled () {
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return this.$store.getters.mergedConfig.virtualScrolling
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},
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showPanelNavShortcuts () {
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return this.$store.getters.mergedConfig.showPanelNavShortcuts
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}
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},
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created () {
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const store = this.$store
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const credentials = store.state.users.currentUser.credentials
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const showImmediately = this.timeline.visibleStatuses.length === 0
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window.addEventListener('scroll', this.handleScroll)
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if (store.state.api.fetchers[this.timelineName]) { return false }
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timelineFetcher.fetchAndUpdate({
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store,
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credentials,
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timeline: this.timelineName,
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showImmediately,
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userId: this.userId,
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listId: this.listId,
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tag: this.tag
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})
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},
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mounted () {
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if (typeof document.hidden !== 'undefined') {
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document.addEventListener('visibilitychange', this.handleVisibilityChange, false)
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this.unfocused = document.hidden
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}
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window.addEventListener('keydown', this.handleShortKey)
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setTimeout(this.determineVisibleStatuses, 250)
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},
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unmounted () {
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window.removeEventListener('scroll', this.handleScroll)
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window.removeEventListener('keydown', this.handleShortKey)
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if (typeof document.hidden !== 'undefined') document.removeEventListener('visibilitychange', this.handleVisibilityChange, false)
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this.$store.commit('setLoading', { timeline: this.timelineName, value: false })
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},
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methods: {
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stopBlockingClicks: debounce( function() {
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this.blockingClicks = false
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}, 1000),
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blockClicksTemporarily () {
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if (!this.blockingClicks) {
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this.blockingClicks = true
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}
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this.stopBlockingClicks()
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},
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handleShortKey (e) {
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// Ignore when input fields are focused
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if (['textarea', 'input'].includes(e.target.tagName.toLowerCase())) return
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if (e.key === '.') this.showNewStatuses()
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},
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showNewStatuses () {
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if (this.timeline.flushMarker !== 0) {
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this.$store.commit('clearTimeline', { timeline: this.timelineName, excludeUserId: true })
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this.$store.commit('queueFlush', { timeline: this.timelineName, id: 0 })
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this.fetchOlderStatuses()
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} else {
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this.blockClicksTemporarily()
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this.$store.commit('showNewStatuses', { timeline: this.timelineName })
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this.paused = false
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}
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if (!this.inProfile) {
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window.scrollTo({ top: 0 })
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}
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},
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fetchOlderStatuses: throttle( function () {
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const store = this.$store
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const credentials = store.state.users.currentUser.credentials
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store.commit('setLoading', { timeline: this.timelineName, value: true })
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timelineFetcher.fetchAndUpdate({
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store,
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credentials,
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timeline: this.timelineName,
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older: true,
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showImmediately: true,
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userId: this.userId,
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listId: this.listId,
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tag: this.tag
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}).then(({ statuses }) => {
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if (statuses && statuses.length === 0) {
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this.bottomedOut = true
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}
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}).finally(() =>
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store.commit('setLoading', { timeline: this.timelineName, value: false })
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)
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}, 1000, this),
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determineVisibleStatuses () {
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if (!this.$refs.timeline) return
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if (!this.virtualScrollingEnabled) return
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const statuses = this.$refs.timeline.children
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const cappedScrollIndex = Math.max(0, Math.min(this.virtualScrollIndex, statuses.length - 1))
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if (statuses.length === 0) return
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const height = Math.max(document.body.offsetHeight, window.pageYOffset)
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const centerOfScreen = window.pageYOffset + (window.innerHeight * 0.5)
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// Start from approximating the index of some visible status by using
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// the center of the screen on the timeline.
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let approxIndex = Math.floor(statuses.length * (centerOfScreen / height))
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let err = statuses[approxIndex].getBoundingClientRect().y
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// if we have a previous scroll index that can be used, test if it's
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// closer than the previous approximation, use it if so
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const virtualScrollIndexY = statuses[cappedScrollIndex].getBoundingClientRect().y
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if (Math.abs(err) > virtualScrollIndexY) {
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approxIndex = cappedScrollIndex
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err = virtualScrollIndexY
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}
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// if the status is too far from viewport, check the next/previous ones if
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// they happen to be better
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while (err < -20 && approxIndex < statuses.length - 1) {
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err += statuses[approxIndex].offsetHeight
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approxIndex++
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}
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while (err > window.innerHeight + 100 && approxIndex > 0) {
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approxIndex--
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err -= statuses[approxIndex].offsetHeight
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}
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// this status is now the center point for virtual scrolling and visible
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// statuses will be nearby statuses before and after it
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this.virtualScrollIndex = approxIndex
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},
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scrollLoad (e) {
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const bodyBRect = document.body.getBoundingClientRect()
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const height = Math.max(bodyBRect.height, -(bodyBRect.y))
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if (this.timeline.loading === false &&
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this.$el.offsetHeight > 0 &&
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(window.innerHeight + window.pageYOffset) >= (height - 750)) {
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this.fetchOlderStatuses()
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}
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},
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handleScroll: throttle( function (e) {
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this.determineVisibleStatuses()
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this.scrollLoad(e)
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}, 200),
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handleVisibilityChange () {
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this.unfocused = document.hidden
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}
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},
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watch: {
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newStatusCount (count) {
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if (!this.$store.getters.mergedConfig.streaming) {
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return
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}
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if (count > 0) {
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// only 'stream' them when you're scrolled to the top
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const doc = document.documentElement
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const top = (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0)
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if (top < 15 &&
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!this.paused &&
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!(this.unfocused && this.$store.getters.mergedConfig.pauseOnUnfocused)
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) {
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this.showNewStatuses()
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} else {
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this.paused = true
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}
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}
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}
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}
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}
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export default Timeline
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