pinafore/routes/_components/timeline/Timeline.html

304 lines
11 KiB
HTML
Raw Normal View History

<h1 class="sr-only">{{label}}</h1>
<div class="timeline"
role="feed"
on:focusWithCapture="saveFocus(event)"
on:blurWithCapture="clearFocus(event)"
>
2018-02-13 07:32:56 +01:00
{{#if virtual}}
<VirtualList component="{{VirtualListComponent}}"
realm="{{$currentInstance + '/' + timeline}}"
containerQuery=".container"
:makeProps
items="{{$timelineItemIds}}"
showFooter="{{$timelineInitialized && $runningUpdate}}"
2018-02-13 07:32:56 +01:00
footerComponent="{{LoadingFooter}}"
2018-02-12 04:15:21 +01:00
showHeader="{{$showHeader}}"
headerComponent="{{MoreHeaderVirtualWrapper}}"
:headerProps
on:scrollToBottom="onScrollToBottom()"
2018-02-12 04:15:21 +01:00
on:scrollToTop="onScrollToTop()"
2018-02-13 18:15:10 +01:00
on:scrollTopChanged="onScrollTopChanged(event)"
on:initialized="initialize()"
on:noNeedToScroll="onNoNeedToScroll()"
/>
{{else}}
<!-- if this is a status thread, it's easier to just render the
whole thing rather than use a virtual list -->
<PseudoVirtualList
component="{{VirtualListComponent}}"
realm="{{$currentInstance + '/' + timeline}}"
containerQuery=".container"
:makeProps
items="{{$timelineItemIds}}"
scrollToItem="{{scrollToItem}}"
on:initialized="initialize()"
/>
{{/if}}
2018-01-15 19:54:02 +01:00
</div>
2018-01-09 03:14:21 +01:00
<script>
2018-01-28 22:09:39 +01:00
import { store } from '../../_store/store'
import StatusVirtualListItem from './StatusVirtualListItem.html'
import NotificationVirtualListItem from './NotificationVirtualListItem.html'
import Status from '../status/Status.html'
2018-01-22 01:07:11 +01:00
import LoadingFooter from './LoadingFooter.html'
2018-02-12 04:15:21 +01:00
import MoreHeaderVirtualWrapper from './MoreHeaderVirtualWrapper.html'
2018-01-28 01:35:44 +01:00
import VirtualList from '../virtualList/VirtualList.html'
import PseudoVirtualList from '../pseudoVirtualList/PseudoVirtualList.html'
2018-01-28 01:35:44 +01:00
import { timelines } from '../../_static/timelines'
import {
getStatus as getStatusFromDatabase,
getNotification as getNotificationFromDatabase
} from '../../_database/timelines/getStatusOrNotification'
2018-03-10 07:31:26 +01:00
import {
fetchTimelineItemsOnScrollToBottom,
setupTimeline,
2018-03-10 19:54:16 +01:00
showMoreItemsForTimeline,
showMoreItemsForThread,
showMoreItemsForCurrentTimeline
2018-03-10 07:31:26 +01:00
} from '../../_actions/timeline'
import { focusWithCapture, blurWithCapture } from '../../_utils/events'
2018-02-12 04:15:21 +01:00
import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
import { mark, stop } from '../../_utils/marks'
import isEqual from 'lodash-es/isEqual'
import { doubleRAF } from '../../_utils/doubleRAF'
2018-01-19 05:25:34 +01:00
2018-01-09 03:14:21 +01:00
export default {
2018-04-20 06:38:01 +02:00
oncreate () {
console.log('timeline oncreate()')
2018-02-11 22:46:57 +01:00
this.setupFocus()
2018-01-28 02:34:08 +01:00
setupTimeline()
this.restoreFocus()
2018-02-12 04:15:21 +01:00
this.setupStreaming()
},
2018-04-20 06:38:01 +02:00
ondestroy () {
console.log('ondestroy')
2018-02-11 22:46:57 +01:00
this.teardownFocus()
2018-01-24 18:47:31 +01:00
},
2018-01-09 03:14:21 +01:00
data: () => ({
LoadingFooter,
2018-02-12 04:15:21 +01:00
MoreHeaderVirtualWrapper,
2018-02-13 18:15:10 +01:00
Status,
scrollTop: 0
2018-01-09 03:14:21 +01:00
}),
2018-01-18 03:35:27 +01:00
computed: {
2018-02-13 07:32:56 +01:00
VirtualListComponent: (timelineType) => {
return timelineType === 'notifications' ? NotificationVirtualListItem : StatusVirtualListItem
},
makeProps: ($currentInstance, timelineType, timelineValue) => async (itemId) => {
let res = {
timelineType,
timelineValue
}
if (timelineType === 'notifications') {
res.notification = await getNotificationFromDatabase($currentInstance, itemId)
} else {
res.status = await getStatusFromDatabase($currentInstance, itemId)
}
return res
},
2018-01-29 00:44:33 +01:00
label: (timeline, $currentInstance, timelineType, timelineValue) => {
2018-01-22 05:02:32 +01:00
if (timelines[timeline]) {
2018-01-29 00:44:33 +01:00
return `${timelines[timeline].label} timeline for ${$currentInstance}`
2018-01-22 05:02:32 +01:00
}
2018-01-29 00:44:33 +01:00
switch (timelineType) {
case 'tag':
return `#${timelineValue} timeline for ${$currentInstance}`
case 'status':
return 'Status context'
case 'account':
return `Account #${timelineValue} on ${$currentInstance}`
2018-02-08 18:15:25 +01:00
case 'list':
return `List #${timelineValue} on ${$currentInstance}`
case 'notifications':
return `Notifications for ${$currentInstance}`
2018-01-29 00:44:33 +01:00
}
},
timelineType: (timeline) => {
return timeline.split('/')[0]
},
timelineValue: (timeline) => {
return timeline.split('/').slice(-1)[0]
},
// for threads, it's simpler to just render all items as a pseudo-virtual list
// due to need to scroll to the right item and thus calculate all item heights up-front
2018-04-20 06:38:01 +02:00
virtual: (timelineType) => timelineType !== 'status',
// Scroll to the first item if this is a "status in own thread" timeline.
// Don't scroll to the first item because it obscures the "back" button.
scrollToItem: (timelineType, timelineValue, $firstTimelineItemId) => (
timelineType === 'status' && $firstTimelineItemId &&
timelineValue !== $firstTimelineItemId && timelineValue
),
itemIdsToAdd: ($itemIdsToAdd) => $itemIdsToAdd,
2018-02-12 04:15:21 +01:00
headerProps: (itemIdsToAdd) => {
return {
2018-02-25 19:50:04 +01:00
count: itemIdsToAdd ? itemIdsToAdd.length : 0,
2018-02-12 04:15:21 +01:00
onClick: showMoreItemsForCurrentTimeline
}
}
2018-01-18 03:35:27 +01:00
},
2018-01-11 05:45:02 +01:00
store: () => store,
components: {
VirtualList,
PseudoVirtualList
},
events: {
focusWithCapture,
blurWithCapture
},
methods: {
2018-04-20 06:38:01 +02:00
initialize () {
let { initializeStarted } = this.get()
if (initializeStarted) {
return
}
2018-02-12 01:10:39 +01:00
this.set({initializeStarted: true})
mark('initializeTimeline')
doubleRAF(() => {
console.log('timeline initialized')
this.store.set({timelineInitialized: true})
stop('initializeTimeline')
})
},
2018-04-20 06:38:01 +02:00
onScrollTopChanged (scrollTop) {
2018-02-13 18:15:10 +01:00
this.set({scrollTop: scrollTop})
},
2018-04-20 06:38:01 +02:00
onScrollToBottom () {
let {
timelineInitialized,
runningUpdate
} = this.store.get()
let {
timelineType
} = this.get()
if (!timelineInitialized ||
runningUpdate ||
timelineType === 'status') { // for status contexts, we've already fetched the whole thread
2018-01-19 05:25:34 +01:00
return
}
let { currentInstance } = this.store.get()
let { timeline } = this.get()
2018-03-10 19:54:16 +01:00
fetchTimelineItemsOnScrollToBottom(
currentInstance,
timeline
2018-03-10 19:54:16 +01:00
)
},
2018-04-20 06:38:01 +02:00
onScrollToTop () {
let { shouldShowHeader } = this.store.get()
if (shouldShowHeader) {
2018-02-12 04:15:21 +01:00
this.store.setForCurrentTimeline({
showHeader: true,
shouldShowHeader: false
})
}
},
2018-04-20 06:38:01 +02:00
setupStreaming () {
let { currentInstance } = this.store.get()
let { timeline } = this.get()
2018-02-12 04:15:21 +01:00
let handleItemIdsToAdd = () => {
let { itemIdsToAdd } = this.get() || {} // TODO: wtf svelte?
2018-02-25 20:20:40 +01:00
if (!itemIdsToAdd || !itemIdsToAdd.length) {
return
}
mark('handleItemIdsToAdd')
let { scrollTop } = this.get()
let {
shouldShowHeader,
showHeader
} = this.store.get()
if (timeline.startsWith('status/')) {
2018-03-10 07:31:26 +01:00
// this is a thread, just insert the statuses already
showMoreItemsForThread(currentInstance, timeline)
2018-03-10 07:31:26 +01:00
} else if (scrollTop === 0 && !shouldShowHeader && !showHeader) {
2018-02-12 04:15:21 +01:00
// if the user is scrolled to the top and we're not showing the header, then
// just insert the statuses. this is "chat room mode"
showMoreItemsForTimeline(currentInstance, timeline)
2018-02-12 04:15:21 +01:00
} else {
// user hasn't scrolled to the top, show a header instead
this.store.setForTimeline(currentInstance, timeline, {shouldShowHeader: true})
2018-02-12 04:15:21 +01:00
}
stop('handleItemIdsToAdd')
2018-02-12 04:15:21 +01:00
}
2018-02-25 19:50:04 +01:00
this.observe('itemIdsToAdd', (newItemIdsToAdd, oldItemIdsToAdd) => {
if (!newItemIdsToAdd ||
!newItemIdsToAdd.length ||
isEqual(newItemIdsToAdd, oldItemIdsToAdd)) {
return
2018-02-21 06:29:59 +01:00
}
2018-02-25 19:50:04 +01:00
scheduleIdleTask(handleItemIdsToAdd)
2018-02-12 04:15:21 +01:00
})
},
2018-04-20 06:38:01 +02:00
setupFocus () {
2018-02-11 22:46:57 +01:00
this.onPushState = this.onPushState.bind(this)
2018-03-21 08:53:52 +01:00
this.store.setForCurrentTimeline({
ignoreBlurEvents: false
2018-03-21 08:53:52 +01:00
})
2018-02-11 22:46:57 +01:00
window.addEventListener('pushState', this.onPushState)
},
2018-04-20 06:38:01 +02:00
teardownFocus () {
2018-02-11 22:46:57 +01:00
window.removeEventListener('pushState', this.onPushState)
},
2018-04-20 06:38:01 +02:00
onPushState () {
2018-02-11 22:46:57 +01:00
this.store.setForCurrentTimeline({ ignoreBlurEvents: true })
},
2018-04-20 06:38:01 +02:00
saveFocus (e) {
2018-03-23 03:56:08 +01:00
try {
let { currentInstance } = this.store.get()
let { timeline } = this.get()
2018-03-23 03:56:08 +01:00
let lastFocusedElementSelector
let activeElement = e.target
if (activeElement) {
let focusKey = activeElement.getAttribute('focus-key')
if (focusKey) {
lastFocusedElementSelector = `[focus-key=${JSON.stringify(focusKey)}]`
}
}
2018-03-23 03:56:08 +01:00
console.log('saving focus to ', lastFocusedElementSelector)
this.store.setForTimeline(currentInstance, timeline, {
2018-03-23 03:56:08 +01:00
lastFocusedElementSelector
})
} catch (err) {
console.error('unable to save focus', err)
}
},
2018-04-20 06:38:01 +02:00
clearFocus () {
2018-03-23 03:56:08 +01:00
try {
let { ignoreBlurEvents } = this.store.get()
if (ignoreBlurEvents) {
2018-03-23 03:56:08 +01:00
return
}
console.log('clearing focus')
let { currentInstance } = this.store.get()
let { timeline } = this.get()
this.store.setForTimeline(currentInstance, timeline, {
2018-03-23 03:56:08 +01:00
lastFocusedElementSelector: null
})
} catch (err) {
console.error('unable to clear focus', err)
}
},
2018-04-20 06:38:01 +02:00
restoreFocus () {
let { lastFocusedElementSelector } = this.store.get()
if (!lastFocusedElementSelector) {
return
}
console.log('restoreFocus', lastFocusedElementSelector)
requestAnimationFrame(() => {
requestAnimationFrame(() => {
let element = document.querySelector(lastFocusedElementSelector)
if (element) {
element.focus()
}
})
})
},
2018-04-20 06:38:01 +02:00
onNoNeedToScroll () {
// If the timeline doesn't need to scroll, then we can safely "preinitialize,"
// i.e. render anything above the fold of the timeline. This avoids the affect
// where the scrollable content appears to jump around if we need to scroll it.
console.log('timeline preinitialized')
this.store.set({timelinePreinitialized: true})
}
2018-01-11 05:45:02 +01:00
}
2018-01-09 03:14:21 +01:00
}
</script>