web/all: move some things out of layout effects

web/src/App.tsx

@@ -13,7 +13,7 @@
 //
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
-import { useEffect, useLayoutEffect, useMemo } from "react"
+import { useEffect, useMemo } from "react"
 import { ScaleLoader } from "react-spinners"
 import Client from "./api/client.ts"
 import RPCClient from "./api/rpc.ts"
@@ -36,10 +36,10 @@ function App() {
 	const client = useMemo(() => new Client(makeRPCClient()), [])
 	const connState = useEventAsState(client.rpc.connect)
 	const clientState = useEventAsState(client.state)
-	useLayoutEffect(() => {
+	useEffect(() => {
 		window.client = client
+		client.start()
 	}, [client])
-	useEffect(() => client.start(), [client])
 
 	const afterConnectError = Boolean(connState?.error && connState.reconnecting && clientState?.is_verified)
 	useEffect(() => {

web/src/api/statestore/room.ts

@@ -92,6 +92,7 @@ export class RoomStateStore {
 	readonly meta: NonNullCachedEventDispatcher<DBRoom>
 	timeline: TimelineRowTuple[] = []
 	timelineCache: (MemDBEvent | null)[] = []
+	editTargets: EventRowID[] = []
 	state: Map<EventType, Map<string, EventRowID>> = new Map()
 	stateLoaded = false
 	typing: UserID[] = []
@@ -134,16 +135,25 @@ export class RoomStateStore {
 	}
 
 	#updateTimelineCache() {
+		const ownMessages: EventRowID[] = []
 		this.timelineCache = this.timeline.map(rt => {
 			const evt = this.eventsByRowID.get(rt.event_rowid)
 			if (!evt) {
 				return null
 			}
 			evt.timeline_rowid = rt.timeline_rowid
+			if (
+				evt.sender === this.parent.userID
+				&& evt.type === "m.room.message"
+				&& evt.relation_type !== "m.replace"
+			) {
+				ownMessages.push(evt.rowid)
+			}
 			return evt
 		}).concat(this.pendingEvents
 			.map(rowID => this.eventsByRowID.get(rowID))
 			.filter(evt => !!evt))
+		this.editTargets = ownMessages
 	}
 
 	notifyTimelineSubscribers() {

web/src/ui/MainScreen.tsx

@@ -13,7 +13,7 @@
 //
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
-import { JSX, use, useEffect, useLayoutEffect, useMemo, useReducer, useRef, useState } from "react"
+import { JSX, use, useEffect, useMemo, useReducer, useRef, useState } from "react"
 import { SyncLoader } from "react-spinners"
 import Client from "@/api/client.ts"
 import { RoomStateStore } from "@/api/statestore"
@@ -280,10 +280,8 @@ const MainScreen = () => {
 		() => new ContextFields(directSetRightPanel, directSetActiveRoom, client),
 		[client],
 	)
-	useLayoutEffect(() => {
-		window.mainScreenContext = context
-	}, [context])
 	useEffect(() => {
+		window.mainScreenContext = context
 		const listener = (evt: PopStateEvent) => {
 			skipNextTransitionRef.current = evt.hasUAVisualTransition
 			const roomID = evt.state?.room_id ?? null

web/src/ui/composer/MessageComposer.tsx

@@ -310,18 +310,18 @@ const MessageComposer = () => {
 			}
 		} else if (fullKey === "ArrowUp" && inp.selectionStart === 0 && inp.selectionEnd === 0) {
 			const currentlyEditing = editing
-				? roomCtx.ownMessages.indexOf(editing.rowid)
+				? room.editTargets.indexOf(editing.rowid)
-				: roomCtx.ownMessages.length
+				: room.editTargets.length
-			const prevEventToEditID = roomCtx.ownMessages[currentlyEditing - 1]
+			const prevEventToEditID = room.editTargets[currentlyEditing - 1]
 			const prevEventToEdit = prevEventToEditID ? room.eventsByRowID.get(prevEventToEditID) : undefined
 			if (prevEventToEdit) {
 				roomCtx.setEditing(prevEventToEdit)
 				evt.preventDefault()
 			}
 		} else if (editing && fullKey === "ArrowDown" && inp.selectionStart === state.text.length) {
-			const currentlyEditingIdx = roomCtx.ownMessages.indexOf(editing.rowid)
+			const currentlyEditingIdx = room.editTargets.indexOf(editing.rowid)
 			const nextEventToEdit = currentlyEditingIdx
-				? room.eventsByRowID.get(roomCtx.ownMessages[currentlyEditingIdx + 1]) : undefined
+				? room.eventsByRowID.get(room.editTargets[currentlyEditingIdx + 1]) : undefined
 			roomCtx.setEditing(nextEventToEdit ?? null)
 			// This timeout is very hacky and probably doesn't work in every case
 			setTimeout(() => inp.setSelectionRange(0, 0), 0)

web/src/ui/roomview/roomcontext.ts

@@ -15,7 +15,7 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 import { RefObject, createContext, createRef, use } from "react"
 import { RoomStateStore } from "@/api/statestore"
-import { EventID, EventRowID, MemDBEvent } from "@/api/types"
+import { EventID, MemDBEvent } from "@/api/types"
 import { NonNullCachedEventDispatcher } from "@/util/eventdispatcher.ts"
 import { escapeMarkdown } from "@/util/markdown.ts"
 
@@ -29,7 +29,6 @@ export class RoomContextData {
 	public setEditing: (evt: MemDBEvent | null) => void = noop("setEditing")
 	public insertText: (text: string) => void = noop("insertText")
 	public readonly isEditing = new NonNullCachedEventDispatcher<boolean>(false)
-	public ownMessages: EventRowID[] = []
 	public scrolledToBottom = true
 
 	constructor(public store: RoomStateStore) {}

web/src/ui/timeline/TimelineView.tsx

@@ -67,12 +67,6 @@ const TimelineView = () => {
 			timelineViewRef.current.scrollTop += timelineViewRef.current.scrollHeight - oldScrollHeight.current
 		}
 		prevOldestTimelineRow.current = timeline[0]?.timeline_rowid ?? 0
-		roomCtx.ownMessages = timeline
-			.filter(evt => evt !== null
-				&& evt.sender === client.userID
-				&& evt.type === "m.room.message"
-				&& evt.relation_type !== "m.replace")
-			.map(evt => evt!.rowid)
 	}, [client.userID, roomCtx, timeline])
 	useEffect(() => {
 		const newestEvent = timeline[timeline.length - 1]