moment/harmonyqml/backend/signal_manager.py
miruka 102baccbe5 Login loading icon
Add standard mechanism in HButton for loading icon display;
have HImage and HIcon base components.
2019-04-26 21:16:57 -04:00

282 lines
9.4 KiB
Python

# Copyright 2019 miruka
# This file is part of harmonyqml, licensed under GPLv3.
from threading import Lock
from typing import Any, Deque, Dict, List, Optional, Sequence
from PyQt5.QtCore import QDateTime, QObject, pyqtBoundSignal
import nio
from nio.rooms import MatrixRoom
from .backend import Backend
from .client import Client
from .model.items import Room, RoomEvent, User
Inviter = Optional[Dict[str, str]]
LeftEvent = Optional[Dict[str, str]]
class SignalManager(QObject):
_lock: Lock = Lock()
def __init__(self, backend: Backend) -> None:
super().__init__(parent=backend)
self.backend = backend
self.last_room_events: Deque[str] = Deque(maxlen=1000)
self._events_in_transfer: int = 0
cm = self.backend.clientManager
cm.clientAdded.connect(self.onClientAdded)
cm.clientDeleted.connect(self.onClientDeleted)
def onClientAdded(self, client: Client) -> None:
self.connectClient(client)
self.backend.models.accounts.append(User(
userId = client.userId,
displayName = self.backend.getUserDisplayName(client.userId),
))
def onClientDeleted(self, user_id: str) -> None:
accs = self.backend.models.accounts
del accs[accs.indexWhere("userId", user_id)]
def connectClient(self, client: Client) -> None:
for name in dir(client):
attr = getattr(client, name)
if isinstance(attr, pyqtBoundSignal):
def onSignal(*args, name=name) -> None:
func = getattr(self, f"on{name[0].upper()}{name[1:]}")
func(client, *args)
attr.connect(onSignal)
def onRoomInvited(self,
client: Client,
room_id: str,
inviter: Inviter = None) -> None:
self._add_room(client, room_id, client.nio.invited_rooms[room_id],
"Invites", inviter=inviter)
def onRoomJoined(self, client: Client, room_id: str) -> None:
self._add_room(client, room_id, client.nio.rooms[room_id], "Rooms")
def onRoomLeft(self,
client: Client,
room_id: str,
left_event: LeftEvent = None) -> None:
self._add_room(client, room_id, client.nio.rooms.get(room_id), "Left",
left_event=left_event)
def _move_room(self, account_id: str, room_id: str) -> None:
def get_newest_event_date_time(room_id: str) -> QDateTime:
for ev in self.backend.models.roomEvents[room_id]:
if not self.backend.EventIsOurProfileChanged(ev, account_id):
return ev.dateTime
return QDateTime.fromMSecsSinceEpoch(0)
rooms_model = self.backend.models.rooms[account_id]
room_index = rooms_model.indexWhere("roomId", room_id)
category = rooms_model[room_index].category
timestamp = get_newest_event_date_time(room_id)
def get_index(put_before_categories: Sequence[str],
put_after_categories: Sequence[str]) -> int:
for i, room in enumerate(rooms_model):
if room.category not in put_after_categories and \
(room.category in put_before_categories or
timestamp >= get_newest_event_date_time(room.roomId)):
return i
return len(rooms_model) - 1
to = 0
if category == "Invites":
to = get_index(["Rooms", "Left"], [])
if category == "Rooms":
to = get_index(["Left"], ["Invites"])
elif category == "Left":
to = get_index([], ["Invites", "Rooms", "Left"])
rooms_model.move(room_index, to)
def _add_room(self,
client: Client,
room_id: str,
room: MatrixRoom,
category: str,
inviter: Inviter = None,
left_event: LeftEvent = None) -> None:
if (inviter and left_event):
raise ValueError()
model = self.backend.models.rooms[client.userId]
no_update = []
def get_displayname() -> Optional[str]:
if not room:
no_update.append("displayName")
return room_id
name = room.name or room.canonical_alias
if name:
return name
name = room.group_name()
return None if name == "Empty room?" else name
item = Room(
roomId = room_id,
category = category,
displayName = get_displayname(),
topic = room.topic if room else "",
inviter = inviter,
leftEvent = left_event,
no_update = no_update,
)
model.updateOrAppendWhere("roomId", room_id, item)
with self._lock:
self._move_room(client.userId, room_id)
def onRoomSyncPrevBatchTokenReceived(self,
_: Client,
room_id: str,
token: str) -> None:
if room_id not in self.backend.past_tokens:
self.backend.past_tokens[room_id] = token
def onRoomPastPrevBatchTokenReceived(self,
_: Client,
room_id: str,
token: str) -> None:
if self.backend.past_tokens[room_id] == token:
self.backend.fully_loaded_rooms.add(room_id)
self.backend.past_tokens[room_id] = token
def onRoomEventReceived(self,
client: Client,
room_id: str,
etype: str,
edict: Dict[str, Any]) -> None:
def process() -> None:
# Prevent duplicate events in models due to multiple accounts
if edict["event_id"] in self.last_room_events:
return
self.last_room_events.appendleft(edict["event_id"])
model = self.backend.models.roomEvents[room_id]
date_time = QDateTime\
.fromMSecsSinceEpoch(edict["server_timestamp"])
new_event = RoomEvent(type=etype, dateTime=date_time, dict=edict)
if etype == "RoomCreateEvent":
self.backend.fully_loaded_rooms.add(room_id)
if self._events_in_transfer:
local_echoes_met: int = 0
update_at: Optional[int] = None
# Find if any locally echoed event corresponds to new_event
for i, event in enumerate(model):
if not event.isLocalEcho:
continue
sb = (event.dict["sender"], event.dict["body"])
new_sb = (new_event.dict["sender"], new_event.dict["body"])
if sb == new_sb:
# The oldest matching local echo shall be replaced
update_at = max(update_at or 0, i)
local_echoes_met += 1
if local_echoes_met >= self._events_in_transfer:
break
if update_at is not None:
model.update(update_at, new_event)
self._events_in_transfer -= 1
return
for i, event in enumerate(model):
if event.isLocalEcho:
continue
# Model is sorted from newest to oldest message
if new_event.dateTime > event.dateTime:
model.insert(i, new_event)
return
model.append(new_event)
with self._lock:
process()
self._move_room(client.userId, room_id)
def onRoomTypingUsersUpdated(self,
client: Client,
room_id: str,
users: List[str]) -> None:
rooms = self.backend.models.rooms[client.userId]
rooms[rooms.indexWhere("roomId", room_id)].typingUsers = users
def onMessageAboutToBeSent(self,
client: Client,
room_id: str,
content: Dict[str, str]) -> None:
with self._lock:
timestamp = QDateTime.currentMSecsSinceEpoch()
model = self.backend.models.roomEvents[room_id]
nio_event = nio.events.RoomMessage.parse_event({
"event_id": "",
"sender": client.userId,
"origin_server_ts": timestamp,
"content": content,
})
event = RoomEvent(
type = type(nio_event).__name__,
dateTime = QDateTime.fromMSecsSinceEpoch(timestamp),
dict = nio_event.__dict__,
isLocalEcho = True,
)
model.insert(0, event)
self._events_in_transfer += 1
self._move_room(client.userId, room_id)
def onRoomAboutToBeForgotten(self, client: Client, room_id: str) -> None:
with self._lock:
rooms = self.backend.models.rooms[client.userId]
del rooms[rooms.indexWhere("roomId", room_id)]
self.backend.models.roomEvents[room_id].clear()