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diff --git a/src/components/conversation/conversation.js b/src/components/conversation/conversation.js
index 4aacd6c967..5ae8f474ba 100644
--- a/src/components/conversation/conversation.js
+++ b/src/components/conversation/conversation.js
@@ -1,307 +1,308 @@
import { get } from 'lodash-es'
import { storeToRefs } from 'pinia'
import {
computed,
nextTick,
provide,
ref,
toRefs,
useTemplateRef,
watch,
} from 'vue'
import { useRouter } from 'vue-router'
import ChatMessageList from 'src/components/chat_message_list/chat_message_list.vue'
import PostStatusForm from 'src/components/post_status_form/post_status_form.vue'
import QuickFilterSettings from 'src/components/quick_filter_settings/quick_filter_settings.vue'
import QuickViewSettings from 'src/components/quick_view_settings/quick_view_settings.vue'
import RichContent from 'src/components/rich_content/rich_content.jsx'
import ThreadTree from 'src/components/thread_tree/thread_tree.vue'
import { useInterfaceStore } from 'src/stores/interface.js'
import { useMergedConfigStore } from 'src/stores/merged_config.js'
import { useStatusesStore } from 'src/stores/statuses.js'
import { useStreamingStore } from 'src/stores/streaming.js'
import { useConversation } from 'src/composables/useConversation.js'
import { useTreeConversationTopology } from 'src/composables/useTreeConversationTopology.js'
import { useVirtualScrolling } from 'src/composables/useVirtualScrolling.js'
import { useScrollPosition } from 'src/composables/useScrollPosition.js'
import { WSConnectionStatus } from 'src/api/websocket.js'
import { library } from '@fortawesome/fontawesome-svg-core'
import {
faAngleDoubleDown,
faAngleDoubleLeft,
faChevronLeft,
faReply,
faTimes,
} from '@fortawesome/free-solid-svg-icons'
library.add(
faAngleDoubleDown,
faAngleDoubleLeft,
faChevronLeft,
faReply,
faTimes,
)
export default {
props: {
statusId: {
// Main thing
type: String,
required: true,
},
isPage: {
// Whether conversation is rendered as a standalone page
// as opposed to embedded into a timeline
type: Boolean,
default: false,
},
},
components: {
ThreadTree,
QuickFilterSettings,
QuickViewSettings,
ChatMessageList,
PostStatusForm,
RichContent,
},
setup(props) {
// # Helpers
const getStatusObject = (id) => useStatusesStore().allStatuses.get(id)
const getConversationId = (statusId) => {
const status = getStatusObject(statusId)
return get(
status,
'retweeted_status.statusnet_conversation_id',
get(status, 'statusnet_conversation_id'),
)
}
const tryScrollTo = async (id) => {
if (!id) {
return
}
if (isPage.value) {
router.push({ name: 'conversation', params: { statusId: id } })
}
setFocused(id)
const target = document.querySelector(`.Status[data-status-id=${id}]`)
await nextTick()
return await target.scrollIntoView({ behavior: 'smooth', block: 'center' })
}
const { statusId } = toRefs(props)
const router = useRouter()
const scroller = useScrollPosition()
// # Main Configuration / global state
const { mergedConfig } = storeToRefs(useMergedConfigStore())
const { mastoUserSocketStatus } = storeToRefs(useStreamingStore())
const displayStyle = computed(() => mergedConfig.value.conversationDisplay)
const streamingEnabled = computed(
() =>
mergedConfig.value.useStreamingApi &&
mastoUserSocketStatus === WSConnectionStatus.JOINED,
)
const { layoutType } = storeToRefs(useInterfaceStore())
const mobileLayout = computed(() => layoutType.value === 'mobile')
// # Conversation Expansion
const expanded = ref(false)
const { isPage } = toRefs(props)
const isExpanded = computed(() => !!(expanded.value || isPage.value))
const toggleExpanded = () => {
expanded.value = !expanded.value
}
provide('isExpanded', isExpanded)
provide('isPage', isPage)
provide('expandable', true)
// # Focus
const focusedId = ref(statusId.value)
const focused = computed(() => (isExpanded.value ? focusedId.value : null))
const setFocused = (id) => {
if (!id) return
focusedId.value = id
if (!streamingEnabled.value) {
useStatusesStore().fetchStatus(id)
}
useStatusesStore().fetchFavsAndRepeats(id)
useStatusesStore().fetchEmojiReactions(id)
}
provide('focused', focused)
// # Main things
const {
currentStatus,
conversation,
replies,
getReplies,
fetchConversation,
loadError,
} = useConversation(focusedId, isExpanded)
watch(expanded, async (value) => {
if (value) {
await fetchConversation()
- await tryScrollTo(currentStatus.value.id)
} else {
resetDisplayState()
}
+ if (isPage.value) return
+ await tryScrollTo(currentStatus.value.id)
}, { flush: 'post' })
const resetDisplayState = () => {
setFocused(statusId.value)
resetThreadDisplay()
}
watch(statusId, (newVal, oldVal) => {
const newConversationId = getConversationId(newVal)
const oldConversationId = getConversationId(oldVal)
if (
newConversationId &&
oldConversationId &&
newConversationId === oldConversationId
) {
setFocused(newVal)
} else {
resetDisplayState()
fetchConversation()
}
})
// Component created
if (isPage.value) {
fetchConversation()
}
// # Misc UI things
const firstStatus = computed(() => conversation.value[0])
const lastStatus = computed(
() => conversation.value[conversation.value.legnth - 1],
)
const getStatusClasses = (status, active) => ({
'-first': status.id === firstStatus.value?.id,
'-last': status.id === lastStatus.value?.id,
})
// # Linear style stuff
const isLinearView = computed(() => displayStyle.value !== 'tree')
const linearElement = useTemplateRef('linear')
const {
heightChart: heightChartLinear,
changeSuspendState: changeSuspendStateLinear,
updateVirtualHeight: updateVirtualHeightLinear,
} = useVirtualScrolling(conversation, linearElement, scroller, true, currentStatus)
// # Tree style stuff
const isTreeView = computed(() => displayStyle.value === 'tree')
const {
topLevel,
currentAncestors,
threadDisplay,
showThreadRecursively,
resetThreadDisplay,
} = useTreeConversationTopology(conversation, replies, focusedId)
provide('threadDisplay', threadDisplay)
const ancestorsElement = useTemplateRef('ancestors')
const {
heightChart: heightChartAncestors,
changeSuspendState: changeSuspendStateAncestors,
updateVirtualHeight: updateVirtualHeightAncestors,
} = useVirtualScrolling(currentAncestors, ancestorsElement, scroller, true)
const currentLevel = computed(() => [currentStatus.value].filter(Boolean))
const currentLevelElement = useTemplateRef('currentLevel')
const {
heightChart: heightChartCurrentLevel,
totalHeight: totalHeightCurrentLevel,
changeSuspendState: changeSuspendStateCurrentLevel,
updateVirtualHeight: updateVirtualHeightCurrentLevel,
} = useVirtualScrolling(currentLevel, currentLevelElement, scroller, false)
const treeViewIsSimple = computed(
() => !mergedConfig.value.conversationTreeAdvanced,
)
const shouldShowAllConversationButton = computed(
() => currentAncestors.value.length > 0 && topLevel.value.length > 1,
)
const shouldShowAncestors = computed(
() => isExpanded.value && heightChartAncestors.value.length > 0,
)
const shouldFadeAncestors = computed(
() => mergedConfig.value.conversationTreeFadeAncestors,
)
// # Scrolling
const diveIntoStatus = (id) => tryScrollTo(id)
const diveToTopLevel = () => tryScrollTo(currentAncestors.value[0].id)
return {
// # Misc
loadError,
mobileLayout,
// # Conversation Expansion
isPage,
isExpanded,
toggleExpanded,
// # Focus
focused,
setFocused,
// # Main things
conversation,
currentStatus,
getReplies,
// # Misc UI things
getStatusClasses,
// # Linear style stuff
isLinearView,
// ## Linear virtual scrolling
heightChartLinear,
changeSuspendStateLinear,
updateVirtualHeightLinear,
// # Tree style stuff
isTreeView,
// ## Tree virtual scrolling
heightChartAncestors,
changeSuspendStateAncestors,
updateVirtualHeightAncestors,
heightChartCurrentLevel,
changeSuspendStateCurrentLevel,
updateVirtualHeightCurrentLevel,
// ## Tree state
// ### Topology
topLevel,
currentAncestors,
// ### Thread Display
showThreadRecursively,
// ### Derived values and config
treeViewIsSimple,
shouldShowAllConversationButton,
shouldShowAncestors,
shouldFadeAncestors,
// # Scrolling
diveToTopLevel,
diveIntoStatus,
}
},
}
diff --git a/src/composables/useVirtualScrolling.js b/src/composables/useVirtualScrolling.js
index d66d0d91d3..34874378b9 100644
--- a/src/composables/useVirtualScrolling.js
+++ b/src/composables/useVirtualScrolling.js
@@ -1,214 +1,214 @@
import { storeToRefs } from 'pinia'
import { computed, ref, watch, nextTick } from 'vue'
import { useMergedConfigStore } from 'src/stores/merged_config.js'
import { useStatusesStore } from 'src/stores/statuses.js'
import { useWindowSize } from 'src/composables/useWindowSize.js'
export function useVirtualScrolling(
conversation,
body,
scrollPosition,
scrollCompensation,
anchorStatus,
) {
const getStatusObject = (id) => useStatusesStore().allStatuses.get(id)
const { mergedConfig } = storeToRefs(useMergedConfigStore())
const anchor = computed(() => anchorStatus?.value.id)
const unsuspendibleIds = ref(new Set())
const changeSuspendState = ({ id, suspend }) => {
if (!suspend) {
unsuspendibleIds.value.add(id)
} else {
unsuspendibleIds.value.delete(id)
}
}
// Getting the actual font size in pixels since UI might have
// a different scale
const fontSizeSetting = computed(() => mergedConfig.value.textSize)
const fontSize = ref(0)
const updateFontSize = () => {
const string = window
.getComputedStyle(document.body)
.getPropertyValue('font-size')
fontSize.value = Number.parseInt(string.slice(0, -2), 10) // remove the 'px'
}
// Update font size if user changed UI scale
watch(fontSizeSetting, updateFontSize, { immediate: true })
// Placeholder heights.
const mutedStatusHeight = computed(() => {
return fontSize.value * 1.5
})
const normalStatusHeight = computed(() => {
return fontSize.value * 10
})
// Add buffer zone to boundary, equal to approx 3 statuses heights
const buffer = computed(() => normalStatusHeight.value * 3)
// Heights map.
const heights = ref(new Map())
const totalHeight = computed(() =>
conversation.value.reduce((acc, item) => {
if (heights.value.has(item.id)) {
return acc + heights.value.get(item.id)
} else if (item.muted) {
return acc + mutedStatusHeight.value
} else {
return acc + normalStatusHeight.value
}
}, 0),
)
const updateVirtualHeight = ({ id, height }) => {
heights.value.set(id, height)
}
// Scrolling
const { y: scrollY, inProgress: scrollInProgress } = scrollPosition
const { height: windowHeight } = useWindowSize()
const topScrollBoundary = ref(0)
const bottomScrollBoundary = ref(0)
const updateBoundaries = () => {
if (!body.value) return // Not mounted yet
const { top } = body.value.getBoundingClientRect()
const distanceItemTopToWindowTop = 0 - top
const distanceItemTopToWindowBottom = windowHeight.value - top
topScrollBoundary.value = distanceItemTopToWindowTop
bottomScrollBoundary.value = distanceItemTopToWindowBottom
}
const windowWatcher = watch(windowHeight, updateBoundaries)
const scrollWatcher = watch(scrollY, updateBoundaries)
const heightWatcher = watch(totalHeight, updateBoundaries)
const bodyWatcher = watch(body, updateBoundaries)
const pauseWatchers = () => {
windowWatcher.pause()
scrollWatcher.pause()
heightWatcher.pause()
bodyWatcher.pause()
}
const resumeWatchers = () => {
windowWatcher.resume()
scrollWatcher.resume()
heightWatcher.resume()
bodyWatcher.resume()
}
const heightChart = computed(() => {
// Map every height and suspendable state
const chart = conversation.value.map(({ id }) => {
const status = getStatusObject(id)
const height =
(() => {
if (heights.value.has(id)) {
return heights.value.get(id)
} else if (status?.muted) {
return mutedStatusHeight.value
} else {
return normalStatusHeight.value
}
})() + 1 //including border
const suspendable = !unsuspendibleIds.value.has(id)
return { id, height, suspendable, status }
})
// Walk over the list to set top offsets
chart.reduce((sum, item) => {
item.top = sum
return sum + item.height
}, 0)
return chart
})
watch(heightChart, async (newVal, oldVal) => {
- if (scrollInProgress) return
+ if (scrollInProgress.value) return
if (!scrollCompensation) return
pauseWatchers()
const getAnchoredEl = (list) => anchor.value
? list.find(({ id }) => id === anchor.value)
: list[list.length - 1]
const oldElement = getAnchoredEl(oldVal)
const newElement = getAnchoredEl(newVal)
const oldOffset = oldElement?.top ?? 0
const newOffset = newElement?.top ?? 0
const diff = newOffset - oldOffset // Positive = down, Negative = up
topScrollBoundary.value += diff
bottomScrollBoundary.value += diff
await nextTick()
- window.scrollBy(0, diff)
+ scrollPosition.scrollBy(0, diff)
updateBoundaries()
resumeWatchers()
})
const heightChartGrouped = computed(() => {
// Determine visibility state
const chart = heightChart.value.map((heightChartItem) => {
const itemBottomBoundary = heightChartItem.top + heightChartItem.height
const itemTopBoundary = heightChartItem.top
const finalTopScrollBoundary = topScrollBoundary.value - buffer.value
const finalBottomScrollBoundary =
bottomScrollBoundary.value + buffer.value
// To be visible, item's bottom boundary shoud be below top scroll boundary)
const isBelowTopBoundary = itemBottomBoundary > finalTopScrollBoundary
// To be visible, item's top boundary shoud be above bottom scroll boundary)
const isAboveBottomBoundary = itemTopBoundary < finalBottomScrollBoundary
// This accounts for the case where item's boundaries exceed scroll boundary
return { ...heightChartItem, visible: isBelowTopBoundary && isAboveBottomBoundary }
})
// Group invisible statuses into spacers
return chart.reduce((acc, heightChartItem) => {
const { suspendable, visible, height, top, bottom, id, status } =
heightChartItem
const present = visible || !suspendable
if (present) {
return [...acc, { type: 'status', height, top, bottom, id, status }]
} else {
const previousItem = acc[acc.length - 1]
const spacer =
previousItem?.type === 'spacer'
? previousItem
: {
type: 'spacer',
top: Number.POSITIVE_INFINITY,
bottom: Number.POSITIVE_INFINITY,
height: 0,
ids: new Set(),
}
spacer.ids.add(id)
spacer.id = [...spacer.ids].join()
spacer.height += height
if (top < spacer.top) spacer.top = top
if (bottom < spacer.bottom) spacer.bottom = bottom
if (previousItem?.type === 'spacer') {
return acc
} else {
return [...acc, spacer]
}
}
}, [])
})
return {
heightChart: heightChartGrouped,
changeSuspendState,
updateVirtualHeight,
}
}

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