import EventEmitter from "../../../EventEmitter.js";
export default class RoomViewModel extends EventEmitter {
constructor(room) {
super();
this._room = room;
this._timeline = null;
this._onRoomChange = this._onRoomChange.bind(this);
this._timelineError = null;
}
async enable() {
this._room.on("change", this._onRoomChange);
try {
this._timeline = await this._room.openTimeline();
this.emit("change", "timelineEntries");
} catch (err) {
this._timelineError = err;
this.emit("change", "error");
disable() {
if (this._timeline) {
this._timeline.close();
// room doesn't tell us yet which fields changed,
// so emit all fields originating from summary
_onRoomChange() {
this.emit("change", "name");
get name() {
return this._room.name;
get timelineEntries() {
return this._timeline && this._timeline.entries;
get error() {
if (this._timelineError) {
return `Something went wrong loading the timeline: ${this._timelineError.message}`;
return null;