Stop showing rooms the user has left in the room list. Fixes #35

5 files changed, 52 insertions, 33 deletions

diff --git a/matrix/matrix.go b/matrix/matrix.go
index ee5d9bd..655e272 100644
--- a/matrix/matrix.go
+++ b/matrix/matrix.go
@@ -217,7 +217,10 @@ func (c *Container) Start() {
 }
 
 // HandleMessage is the event handler for the m.room.message timeline event.
-func (c *Container) HandleMessage(evt *gomatrix.Event) {
+func (c *Container) HandleMessage(source EventSource, evt *gomatrix.Event) {
+	if source == EventSourceLeave {
+		return
+	}
 	mainView := c.ui.MainView()
 
 	roomView := mainView.GetRoom(evt.RoomID)
@@ -240,7 +243,7 @@ func (c *Container) HandleMessage(evt *gomatrix.Event) {
 }
 
 // HandlePushRules is the event handler for the m.push_rules account data event.
-func (c *Container) HandlePushRules(evt *gomatrix.Event) {
+func (c *Container) HandlePushRules(source EventSource, evt *gomatrix.Event) {
 	debug.Print("Received updated push rules")
 	var err error
 	c.config.Session.PushRules, err = pushrules.EventToPushRules(evt)
@@ -250,7 +253,7 @@ func (c *Container) HandlePushRules(evt *gomatrix.Event) {
 }
 
 // HandleTag is the event handler for the m.tag account data event.
-func (c *Container) HandleTag(evt *gomatrix.Event) {
+func (c *Container) HandleTag(source EventSource, evt *gomatrix.Event) {
 	room := c.config.Session.GetRoom(evt.RoomID)
 
 	tags, _ := evt.Content["tags"].(map[string]interface{})
@@ -292,11 +295,13 @@ func (c *Container) processOwnMembershipChange(evt *gomatrix.Event) {
 }
 
 // HandleMembership is the event handler for the m.room.membership state event.
-func (c *Container) HandleMembership(evt *gomatrix.Event) {
-	if evt.StateKey != nil && *evt.StateKey == c.config.Session.UserID {
+func (c *Container) HandleMembership(source EventSource, evt *gomatrix.Event) {
+	if !c.config.Session.InitialSyncDone && source == EventSourceLeave {
+		return
+	} else if evt.StateKey != nil && *evt.StateKey == c.config.Session.UserID {
 		c.processOwnMembershipChange(evt)
-	} else if !c.config.Session.InitialSyncDone /*&& evt.Timestamp < time.Now().Add(-1*time.Hour).Unix()*/ {
-		// We don't care about other users' membership events in the initial sync.
+	} else if !c.config.Session.InitialSyncDone || source == EventSourceLeave {
+		// We don't care about other users' membership events in the initial sync or chats we've left.
 		return
 	}
 
@@ -308,11 +313,6 @@ func (c *Container) HandleMembership(evt *gomatrix.Event) {
 
 	message := mainView.ParseEvent(roomView, evt)
 	if message != nil {
-		// TODO this shouldn't be necessary
-		//roomView.MxRoom().UpdateState(evt)
-		// TODO This should probably also be in a different place
-		//roomView.UpdateUserList()
-
 		roomView.AddMessage(message, ifc.AppendMessage)
 		// We don't want notifications at startup.
 		if c.syncer.FirstSyncDone {
@@ -324,7 +324,7 @@ func (c *Container) HandleMembership(evt *gomatrix.Event) {
 }
 
 // HandleTyping is the event handler for the m.typing event.
-func (c *Container) HandleTyping(evt *gomatrix.Event) {
+func (c *Container) HandleTyping(source EventSource, evt *gomatrix.Event) {
 	users := evt.Content["user_ids"].([]interface{})
 
 	strUsers := make([]string, len(users))
diff --git a/matrix/rooms/room.go b/matrix/rooms/room.go
index 95349c3..808eecb 100644
--- a/matrix/rooms/room.go
+++ b/matrix/rooms/room.go
@@ -47,6 +47,9 @@ type RoomTag struct {
 type Room struct {
 	*gomatrix.Room
 
+	// Whether or not the user has left the room.
+	HasLeft bool
+
 	// The first batch of events that has been fetched for this room.
 	// Used for fetching additional history.
 	PrevBatch string
diff --git a/matrix/sync.go b/matrix/sync.go
index 8ff3d39..e2d38df 100644
--- a/matrix/sync.go
+++ b/matrix/sync.go
@@ -31,12 +31,24 @@ type SyncerSession interface {
 	GetUserID() string
 }
 
+type EventSource int
+
+const (
+	EventSourcePresence    EventSource = iota
+	EventSourceAccountData
+	EventSourceJoin
+	EventSourceInvite
+	EventSourceLeave
+)
+
+type EventHandler func(source EventSource, event *gomatrix.Event)
+
 // GomuksSyncer is the default syncing implementation. You can either write your own syncer, or selectively
 // replace parts of this default syncer (e.g. the ProcessResponse method). The default syncer uses the observer
 // pattern to notify callers about incoming events. See GomuksSyncer.OnEventType for more information.
 type GomuksSyncer struct {
 	Session          SyncerSession
-	listeners        map[string][]gomatrix.OnEventListener // event type to listeners array
+	listeners        map[string][]EventHandler // event type to listeners array
 	FirstSyncDone    bool
 	InitDoneCallback func()
 }
@@ -45,22 +57,22 @@ type GomuksSyncer struct {
 func NewGomuksSyncer(session SyncerSession) *GomuksSyncer {
 	return &GomuksSyncer{
 		Session:       session,
-		listeners:     make(map[string][]gomatrix.OnEventListener),
+		listeners:     make(map[string][]EventHandler),
 		FirstSyncDone: false,
 	}
 }
 
 // ProcessResponse processes a Matrix sync response.
 func (s *GomuksSyncer) ProcessResponse(res *gomatrix.RespSync, since string) (err error) {
-	s.processSyncEvents(nil, res.Presence.Events, false, false)
-	s.processSyncEvents(nil, res.AccountData.Events, false, false)
+	s.processSyncEvents(nil, res.Presence.Events, EventSourcePresence, false, false)
+	s.processSyncEvents(nil, res.AccountData.Events, EventSourceAccountData, false, false)
 
 	for roomID, roomData := range res.Rooms.Join {
 		room := s.Session.GetRoom(roomID)
-		s.processSyncEvents(room, roomData.State.Events, true, false)
-		s.processSyncEvents(room, roomData.Timeline.Events, false, false)
-		s.processSyncEvents(room, roomData.Ephemeral.Events, false, false)
-		s.processSyncEvents(room, roomData.AccountData.Events, false, false)
+		s.processSyncEvents(room, roomData.State.Events, EventSourceJoin, true, false)
+		s.processSyncEvents(room, roomData.Timeline.Events, EventSourceJoin, false, false)
+		s.processSyncEvents(room, roomData.Ephemeral.Events, EventSourceJoin, false, false)
+		s.processSyncEvents(room, roomData.AccountData.Events, EventSourceJoin, false, false)
 
 		if len(room.PrevBatch) == 0 {
 			room.PrevBatch = roomData.Timeline.PrevBatch
@@ -69,13 +81,14 @@ func (s *GomuksSyncer) ProcessResponse(res *gomatrix.RespSync, since string) (er
 
 	for roomID, roomData := range res.Rooms.Invite {
 		room := s.Session.GetRoom(roomID)
-		s.processSyncEvents(room, roomData.State.Events, true, false)
+		s.processSyncEvents(room, roomData.State.Events, EventSourceInvite, true, false)
 	}
 
 	for roomID, roomData := range res.Rooms.Leave {
 		room := s.Session.GetRoom(roomID)
-		s.processSyncEvents(room, roomData.State.Events, true, true)
-		s.processSyncEvents(room, roomData.Timeline.Events, false, false)
+		room.HasLeft = true
+		s.processSyncEvents(room, roomData.State.Events, EventSourceLeave, true, true)
+		s.processSyncEvents(room, roomData.Timeline.Events, EventSourceLeave, false, false)
 
 		if len(room.PrevBatch) == 0 {
 			room.PrevBatch = roomData.Timeline.PrevBatch
@@ -90,41 +103,41 @@ func (s *GomuksSyncer) ProcessResponse(res *gomatrix.RespSync, since string) (er
 	return
 }
 
-func (s *GomuksSyncer) processSyncEvents(room *rooms.Room, events []*gomatrix.Event, isState bool, checkStateKey bool) {
+func (s *GomuksSyncer) processSyncEvents(room *rooms.Room, events []*gomatrix.Event, source EventSource, isState bool, checkStateKey bool) {
 	for _, event := range events {
 		if !checkStateKey || event.StateKey != nil {
-			s.processSyncEvent(room, event, isState)
+			s.processSyncEvent(room, event, source, isState)
 		}
 	}
 }
 
-func (s *GomuksSyncer) processSyncEvent(room *rooms.Room, event *gomatrix.Event, isState bool) {
+func (s *GomuksSyncer) processSyncEvent(room *rooms.Room, event *gomatrix.Event, source EventSource, isState bool) {
 	if room != nil {
 		event.RoomID = room.ID
 	}
 	if isState {
 		room.UpdateState(event)
 	}
-	s.notifyListeners(event)
+	s.notifyListeners(source, event)
 }
 
 // OnEventType allows callers to be notified when there are new events for the given event type.
 // There are no duplicate checks.
-func (s *GomuksSyncer) OnEventType(eventType string, callback gomatrix.OnEventListener) {
+func (s *GomuksSyncer) OnEventType(eventType string, callback EventHandler) {
 	_, exists := s.listeners[eventType]
 	if !exists {
-		s.listeners[eventType] = []gomatrix.OnEventListener{}
+		s.listeners[eventType] = []EventHandler{}
 	}
 	s.listeners[eventType] = append(s.listeners[eventType], callback)
 }
 
-func (s *GomuksSyncer) notifyListeners(event *gomatrix.Event) {
+func (s *GomuksSyncer) notifyListeners(source EventSource, event *gomatrix.Event) {
 	listeners, exists := s.listeners[event.Type]
 	if !exists {
 		return
 	}
 	for _, fn := range listeners {
-		fn(event)
+		fn(source, event)
 	}
 }
 
diff --git a/matrix/sync_test.go b/matrix/sync_test.go
index 14f8969..56f62f9 100644
--- a/matrix/sync_test.go
+++ b/matrix/sync_test.go
@@ -177,7 +177,7 @@ type mockListener struct {
 	received []*gomatrix.Event
 }
 
-func (ml *mockListener) receive(evt *gomatrix.Event) {
+func (ml *mockListener) receive(source matrix.EventSource, evt *gomatrix.Event) {
 	ml.received = append(ml.received, evt)
 }
 
diff --git a/ui/view-main.go b/ui/view-main.go
index b7bbf6d..8d6941f 100644
--- a/ui/view-main.go
+++ b/ui/view-main.go
@@ -358,6 +358,9 @@ func (view *MainView) SetRooms(rooms map[string]*rooms.Room) {
 	view.roomView.Clear()
 	view.rooms = make(map[string]*RoomView)
 	for _, room := range rooms {
+		if room.HasLeft {
+			continue
+		}
 		view.roomList.Add(room)
 		view.addRoomPage(room)
 	}