474 lines
16 KiB
Rust
474 lines
16 KiB
Rust
use crate::{
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participant::{LocalParticipant, ParticipantLocation, RemoteParticipant},
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IncomingCall,
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};
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use anyhow::{anyhow, Result};
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use client::{proto, Client, PeerId, TypedEnvelope, User, UserStore};
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use collections::{BTreeMap, HashSet};
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use futures::StreamExt;
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use gpui::{AsyncAppContext, Entity, ModelContext, ModelHandle, MutableAppContext, Task};
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use project::Project;
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use std::{os::unix::prelude::OsStrExt, sync::Arc};
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use util::ResultExt;
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#[derive(Clone, Debug, PartialEq, Eq)]
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pub enum Event {
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RemoteProjectShared {
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owner: Arc<User>,
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project_id: u64,
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worktree_root_names: Vec<String>,
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},
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RemoteProjectUnshared {
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project_id: u64,
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},
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Left,
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}
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pub struct Room {
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id: u64,
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status: RoomStatus,
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local_participant: LocalParticipant,
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remote_participants: BTreeMap<PeerId, RemoteParticipant>,
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pending_participants: Vec<Arc<User>>,
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participant_user_ids: HashSet<u64>,
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pending_call_count: usize,
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leave_when_empty: bool,
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client: Arc<Client>,
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user_store: ModelHandle<UserStore>,
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subscriptions: Vec<client::Subscription>,
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pending_room_update: Option<Task<()>>,
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}
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impl Entity for Room {
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type Event = Event;
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fn release(&mut self, _: &mut MutableAppContext) {
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self.client.send(proto::LeaveRoom { id: self.id }).log_err();
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}
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}
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impl Room {
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fn new(
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id: u64,
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client: Arc<Client>,
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user_store: ModelHandle<UserStore>,
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cx: &mut ModelContext<Self>,
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) -> Self {
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let mut client_status = client.status();
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cx.spawn_weak(|this, mut cx| async move {
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let is_connected = client_status
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.next()
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.await
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.map_or(false, |s| s.is_connected());
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// Even if we're initially connected, any future change of the status means we momentarily disconnected.
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if !is_connected || client_status.next().await.is_some() {
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if let Some(this) = this.upgrade(&cx) {
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let _ = this.update(&mut cx, |this, cx| this.leave(cx));
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}
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}
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})
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.detach();
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Self {
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id,
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status: RoomStatus::Online,
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participant_user_ids: Default::default(),
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local_participant: Default::default(),
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remote_participants: Default::default(),
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pending_participants: Default::default(),
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pending_call_count: 0,
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subscriptions: vec![client.add_message_handler(cx.handle(), Self::handle_room_updated)],
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leave_when_empty: false,
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pending_room_update: None,
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client,
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user_store,
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}
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}
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pub(crate) fn create(
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recipient_user_id: u64,
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initial_project: Option<ModelHandle<Project>>,
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client: Arc<Client>,
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user_store: ModelHandle<UserStore>,
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cx: &mut MutableAppContext,
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) -> Task<Result<ModelHandle<Self>>> {
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cx.spawn(|mut cx| async move {
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let response = client.request(proto::CreateRoom {}).await?;
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let room = cx.add_model(|cx| Self::new(response.id, client, user_store, cx));
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let initial_project_id = if let Some(initial_project) = initial_project {
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let initial_project_id = room
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.update(&mut cx, |room, cx| {
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room.share_project(initial_project.clone(), cx)
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})
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.await?;
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Some(initial_project_id)
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} else {
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None
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};
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match room
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.update(&mut cx, |room, cx| {
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room.leave_when_empty = true;
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room.call(recipient_user_id, initial_project_id, cx)
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})
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.await
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{
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Ok(()) => Ok(room),
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Err(error) => Err(anyhow!("room creation failed: {:?}", error)),
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}
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})
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}
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pub(crate) fn join(
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call: &IncomingCall,
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client: Arc<Client>,
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user_store: ModelHandle<UserStore>,
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cx: &mut MutableAppContext,
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) -> Task<Result<ModelHandle<Self>>> {
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let room_id = call.room_id;
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cx.spawn(|mut cx| async move {
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let response = client.request(proto::JoinRoom { id: room_id }).await?;
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let room_proto = response.room.ok_or_else(|| anyhow!("invalid room"))?;
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let room = cx.add_model(|cx| Self::new(room_id, client, user_store, cx));
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room.update(&mut cx, |room, cx| {
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room.leave_when_empty = true;
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room.apply_room_update(room_proto, cx)?;
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anyhow::Ok(())
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})?;
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Ok(room)
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})
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}
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fn should_leave(&self) -> bool {
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self.leave_when_empty
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&& self.pending_room_update.is_none()
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&& self.pending_participants.is_empty()
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&& self.remote_participants.is_empty()
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&& self.pending_call_count == 0
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}
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pub(crate) fn leave(&mut self, cx: &mut ModelContext<Self>) -> Result<()> {
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if self.status.is_offline() {
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return Err(anyhow!("room is offline"));
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}
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cx.notify();
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cx.emit(Event::Left);
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self.status = RoomStatus::Offline;
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self.remote_participants.clear();
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self.pending_participants.clear();
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self.participant_user_ids.clear();
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self.subscriptions.clear();
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self.client.send(proto::LeaveRoom { id: self.id })?;
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Ok(())
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}
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pub fn id(&self) -> u64 {
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self.id
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}
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pub fn status(&self) -> RoomStatus {
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self.status
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}
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pub fn local_participant(&self) -> &LocalParticipant {
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&self.local_participant
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}
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pub fn remote_participants(&self) -> &BTreeMap<PeerId, RemoteParticipant> {
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&self.remote_participants
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}
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pub fn pending_participants(&self) -> &[Arc<User>] {
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&self.pending_participants
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}
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pub fn contains_participant(&self, user_id: u64) -> bool {
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self.participant_user_ids.contains(&user_id)
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}
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async fn handle_room_updated(
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this: ModelHandle<Self>,
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envelope: TypedEnvelope<proto::RoomUpdated>,
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_: Arc<Client>,
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mut cx: AsyncAppContext,
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) -> Result<()> {
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let room = envelope
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.payload
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.room
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.ok_or_else(|| anyhow!("invalid room"))?;
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this.update(&mut cx, |this, cx| this.apply_room_update(room, cx))
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}
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fn apply_room_update(
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&mut self,
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mut room: proto::Room,
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cx: &mut ModelContext<Self>,
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) -> Result<()> {
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// Filter ourselves out from the room's participants.
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let local_participant_ix = room
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.participants
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.iter()
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.position(|participant| Some(participant.user_id) == self.client.user_id());
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let local_participant = local_participant_ix.map(|ix| room.participants.swap_remove(ix));
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let remote_participant_user_ids = room
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.participants
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.iter()
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.map(|p| p.user_id)
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.collect::<Vec<_>>();
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let (remote_participants, pending_participants) =
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self.user_store.update(cx, move |user_store, cx| {
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(
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user_store.get_users(remote_participant_user_ids, cx),
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user_store.get_users(room.pending_participant_user_ids, cx),
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)
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});
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self.pending_room_update = Some(cx.spawn(|this, mut cx| async move {
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let (remote_participants, pending_participants) =
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futures::join!(remote_participants, pending_participants);
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this.update(&mut cx, |this, cx| {
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this.participant_user_ids.clear();
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if let Some(participant) = local_participant {
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this.local_participant.projects = participant.projects;
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} else {
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this.local_participant.projects.clear();
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}
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if let Some(participants) = remote_participants.log_err() {
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for (participant, user) in room.participants.into_iter().zip(participants) {
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let peer_id = PeerId(participant.peer_id);
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this.participant_user_ids.insert(participant.user_id);
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let old_projects = this
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.remote_participants
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.get(&peer_id)
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.into_iter()
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.flat_map(|existing| &existing.projects)
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.map(|project| project.id)
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.collect::<HashSet<_>>();
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let new_projects = participant
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.projects
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.iter()
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.map(|project| project.id)
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.collect::<HashSet<_>>();
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for project in &participant.projects {
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if !old_projects.contains(&project.id) {
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cx.emit(Event::RemoteProjectShared {
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owner: user.clone(),
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project_id: project.id,
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worktree_root_names: project.worktree_root_names.clone(),
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});
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}
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}
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for unshared_project_id in old_projects.difference(&new_projects) {
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cx.emit(Event::RemoteProjectUnshared {
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project_id: *unshared_project_id,
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});
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}
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this.remote_participants.insert(
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peer_id,
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RemoteParticipant {
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user: user.clone(),
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projects: participant.projects,
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location: ParticipantLocation::from_proto(participant.location)
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.unwrap_or(ParticipantLocation::External),
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},
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);
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}
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this.remote_participants.retain(|_, participant| {
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if this.participant_user_ids.contains(&participant.user.id) {
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true
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} else {
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for project in &participant.projects {
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cx.emit(Event::RemoteProjectUnshared {
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project_id: project.id,
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});
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}
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false
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}
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});
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}
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if let Some(pending_participants) = pending_participants.log_err() {
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this.pending_participants = pending_participants;
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for participant in &this.pending_participants {
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this.participant_user_ids.insert(participant.id);
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}
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}
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this.pending_room_update.take();
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if this.should_leave() {
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let _ = this.leave(cx);
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}
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this.check_invariants();
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cx.notify();
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});
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}));
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cx.notify();
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Ok(())
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}
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fn check_invariants(&self) {
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#[cfg(any(test, feature = "test-support"))]
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{
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for participant in self.remote_participants.values() {
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assert!(self.participant_user_ids.contains(&participant.user.id));
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}
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for participant in &self.pending_participants {
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assert!(self.participant_user_ids.contains(&participant.id));
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}
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assert_eq!(
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self.participant_user_ids.len(),
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self.remote_participants.len() + self.pending_participants.len()
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);
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}
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}
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pub(crate) fn call(
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&mut self,
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recipient_user_id: u64,
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initial_project_id: Option<u64>,
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cx: &mut ModelContext<Self>,
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) -> Task<Result<()>> {
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if self.status.is_offline() {
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return Task::ready(Err(anyhow!("room is offline")));
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}
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cx.notify();
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let client = self.client.clone();
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let room_id = self.id;
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self.pending_call_count += 1;
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cx.spawn(|this, mut cx| async move {
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let result = client
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.request(proto::Call {
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room_id,
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recipient_user_id,
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initial_project_id,
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})
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.await;
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this.update(&mut cx, |this, cx| {
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this.pending_call_count -= 1;
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if this.should_leave() {
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this.leave(cx)?;
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}
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result
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})?;
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Ok(())
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})
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}
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pub(crate) fn share_project(
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&mut self,
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project: ModelHandle<Project>,
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cx: &mut ModelContext<Self>,
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) -> Task<Result<u64>> {
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if let Some(project_id) = project.read(cx).remote_id() {
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return Task::ready(Ok(project_id));
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}
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let request = self.client.request(proto::ShareProject {
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room_id: self.id(),
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worktrees: project
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.read(cx)
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.worktrees(cx)
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.map(|worktree| {
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let worktree = worktree.read(cx);
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proto::WorktreeMetadata {
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id: worktree.id().to_proto(),
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root_name: worktree.root_name().into(),
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visible: worktree.is_visible(),
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abs_path: worktree.abs_path().as_os_str().as_bytes().to_vec(),
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}
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})
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.collect(),
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});
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cx.spawn(|this, mut cx| async move {
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let response = request.await?;
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project.update(&mut cx, |project, cx| {
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project
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.shared(response.project_id, cx)
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.detach_and_log_err(cx)
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});
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// If the user's location is in this project, it changes from UnsharedProject to SharedProject.
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this.update(&mut cx, |this, cx| {
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let active_project = this.local_participant.active_project.as_ref();
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if active_project.map_or(false, |location| *location == project) {
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this.set_location(Some(&project), cx)
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} else {
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Task::ready(Ok(()))
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}
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})
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.await?;
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Ok(response.project_id)
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})
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}
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pub fn set_location(
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&mut self,
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project: Option<&ModelHandle<Project>>,
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cx: &mut ModelContext<Self>,
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) -> Task<Result<()>> {
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if self.status.is_offline() {
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return Task::ready(Err(anyhow!("room is offline")));
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}
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let client = self.client.clone();
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let room_id = self.id;
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let location = if let Some(project) = project {
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self.local_participant.active_project = Some(project.downgrade());
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if let Some(project_id) = project.read(cx).remote_id() {
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proto::participant_location::Variant::SharedProject(
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proto::participant_location::SharedProject { id: project_id },
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)
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} else {
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proto::participant_location::Variant::UnsharedProject(
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proto::participant_location::UnsharedProject {},
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)
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}
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} else {
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self.local_participant.active_project = None;
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proto::participant_location::Variant::External(proto::participant_location::External {})
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};
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cx.notify();
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cx.foreground().spawn(async move {
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client
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.request(proto::UpdateParticipantLocation {
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room_id,
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location: Some(proto::ParticipantLocation {
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variant: Some(location),
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}),
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})
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.await?;
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Ok(())
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})
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}
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}
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|
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#[derive(Copy, Clone, PartialEq, Eq)]
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pub enum RoomStatus {
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Online,
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Offline,
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}
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|
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impl RoomStatus {
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pub fn is_offline(&self) -> bool {
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matches!(self, RoomStatus::Offline)
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}
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}
|