Distinguish room state and timeline events in embedded clients #4574
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robintown
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This change enables room widget clients to take advantage of the more reliable method of communicating room state over the widget API provided by a recent update to MSC2762.
robintown
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t3chguy
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Dec 18, 2024
dbkr
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Dec 18, 2024
toger5
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Jan 13, 2025
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@robintown Do you think those changes could make it work without needing changes on the rust sdk?
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| // Backfill the requested events | ||
| // We only get the most recent event for every type + state key combo, | ||
| // so it doesn't really matter what order we inject them in | ||
| await Promise.all( | ||
| this.capabilities.receiveState?.map(async ({ eventType, stateKey }) => { | ||
| const rawEvents = await this.widgetApi.readStateEvents(eventType, undefined, stateKey, [this.roomId]); | ||
| const events = rawEvents.map((rawEvent) => new MatrixEvent(rawEvent as Partial<IEvent>)); | ||
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| if (this.syncApi instanceof SyncApi) { | ||
| // Passing undefined for `stateAfterEventList` allows will make `injectRoomEvents` run in legacy mode | ||
| // -> state events in `timelineEventList` will update the state. | ||
| await this.syncApi.injectRoomEvents(this.room!, undefined, events); | ||
| } else { | ||
| await this.syncApi!.injectRoomEvents(this.room!, events); // Sliding Sync | ||
| } | ||
| events.forEach((event) => { | ||
| this.emit(ClientEvent.Event, event); | ||
| logger.info(`Backfilled event ${event.getId()} ${event.getType()} ${event.getStateKey()}`); | ||
| }); | ||
| }) ?? [], | ||
| ); |
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we could add this code back in case the driver does not support the update_state (or state_after) version.
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| // Passing undefined for `stateAfterEventList` allows will make `injectRoomEvents` run in legacy mode | ||
| // -> state events in `timelineEventList` will update the state. | ||
| await this.syncApi.injectRoomEvents(this.room!, [], undefined, [event]); |
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Use the state_after version is not supported use:
await this.syncApi.injectRoomEvents(this.room!, [], undefined, [event]); as before.
| // this.injectRoomEvents(this.room!, params.addToState ? [event] : [], params.addToTimeline ? [event] : []); | ||
| // } | ||
| // ``` | ||
| await this.syncApi!.injectRoomEvents(this.room!, [], [event]); // Sliding Sync |
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also use this if the version is not supported.
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This change enables room widget clients to take advantage of the more reliable method of communicating room state over the widget API provided by this update to MSC2762.
Depends on matrix-org/matrix-widget-api#116