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50 lines
1.9 KiB
TypeScript
50 lines
1.9 KiB
TypeScript
// gomuks - A Matrix client written in Go.
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// Copyright (C) 2024 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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import { RefObject, createContext, createRef, use } from "react"
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import { RoomStateStore } from "@/api/statestore"
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import { EventID, EventRowID, MemDBEvent } from "@/api/types"
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import { NonNullCachedEventDispatcher } from "@/util/eventdispatcher.ts"
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const noop = (name: string) => () => {
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console.warn(`${name} called before initialization`)
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}
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export class RoomContextData {
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public timelineBottomRef: RefObject<HTMLDivElement | null> = createRef()
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public setReplyTo: (eventID: EventID | null) => void = noop("setReplyTo")
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public setEditing: (evt: MemDBEvent | null) => void = noop("setEditing")
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public isEditing = new NonNullCachedEventDispatcher<boolean>(false)
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public ownMessages: EventRowID[] = []
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public scrolledToBottom = true
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constructor(public store: RoomStateStore) {}
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scrollToBottom() {
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if (this.scrolledToBottom) {
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this.timelineBottomRef.current?.scrollIntoView()
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}
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}
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}
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export const RoomContext = createContext<RoomContextData | undefined>(undefined)
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export const useRoomContext = () => {
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const roomCtx = use(RoomContext)
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if (!roomCtx) {
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throw new Error("useRoomContext called outside RoomContext provider")
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}
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return roomCtx
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}
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