Support refreshDueToExternalTransaction in more views

submodules/Postbox/Sources/AdditionalChatListItemsView.swift

@@ -14,6 +14,10 @@ final class MutableAdditionalChatListItemsView: MutablePostboxView {
         }
         return false
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return AdditionalChatListItemsView(self)

submodules/Postbox/Sources/AllChatListHolesView.swift

@@ -48,6 +48,10 @@ final class MutableAllChatListHolesView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return AllChatListHolesView(self)

submodules/Postbox/Sources/CachedItemView.swift

@@ -16,6 +16,10 @@ final class MutableCachedItemView: MutablePostboxView {
         }
         return false
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return CachedItemView(self)

submodules/Postbox/Sources/CachedPeerDataView.swift

@@ -17,6 +17,10 @@ final class MutableCachedPeerDataView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return CachedPeerDataView(self)

submodules/Postbox/Sources/ContactPeersView.swift

@@ -70,6 +70,10 @@ final class MutableContactPeersView: MutablePostboxView {
         return updated
     }
 
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
+
     func immutableView() -> PostboxView {
         return ContactPeersView(self)
     }

submodules/Postbox/Sources/DeletedMessagesView.swift

@@ -33,6 +33,10 @@ final class MutableDeletedMessagesView: MutablePostboxView {
         return updated
     }
 
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
+
     func immutableView() -> PostboxView {
         return DeletedMessagesView(self)
     }

submodules/Postbox/Sources/GlobalMessageTagsView.swift

@@ -202,6 +202,25 @@ final class MutableGlobalMessageTagsView: MutablePostboxView {
         
         return hasChanges
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let (entries, lower, upper) = postbox.messageHistoryTable.entriesAround(globalTagMask: globalTag, index: position, count: count)
+
+        self.entries = entries.map { entry -> InternalGlobalMessageTagsEntry in
+            switch entry {
+                case let .message(message):
+                    return .intermediateMessage(message)
+                case let .hole(index):
+                    return .hole(index)
+            }
+        }
+        self.earlier = lower
+        self.later = upper
+
+        self.render(postbox: postbox)
+
+        return true
+    }
     
     private func add(_ entry: InternalGlobalMessageTagsEntry) -> Bool {
         if self.entries.count == 0 {

submodules/Postbox/Sources/HistoryTagInfoView.swift

@@ -61,6 +61,22 @@ final class MutableHistoryTagInfoView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var currentIndex: MessageIndex?
+        for namespace in postbox.messageHistoryIndexTable.existingNamespaces(peerId: self.peerId) {
+            if let index = postbox.messageHistoryTagsTable.latestIndex(tag: self.tag, peerId: self.peerId, namespace: namespace) {
+                currentIndex = index
+                break
+            }
+        }
+        if self.currentIndex != currentIndex {
+            self.currentIndex = currentIndex
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return HistoryTagInfoView(self)

submodules/Postbox/Sources/InvalidatedMessageHistoryTagSummariesView.swift

@@ -37,6 +37,19 @@ final class MutableInvalidatedMessageHistoryTagSummariesView: MutablePostboxView
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var entries = Set<InvalidatedMessageHistoryTagsSummaryEntry>()
+        for entry in postbox.invalidatedMessageHistoryTagsSummaryTable.get(tagMask: tagMask, namespace: namespace) {
+            entries.insert(entry)
+        }
+        if self.entries != entries {
+            self.entries = entries
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return InvalidatedMessageHistoryTagSummariesView(self)

submodules/Postbox/Sources/ItemCollectionIdsView.swift

@@ -40,6 +40,20 @@ final class MutableItemCollectionIdsView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var idsByNamespace: [ItemCollectionId.Namespace: Set<ItemCollectionId>] = [:]
+        for namespace in namespaces {
+            let ids = postbox.itemCollectionInfoTable.getIds(namespace: namespace)
+            idsByNamespace[namespace] = Set(ids)
+        }
+        if self.idsByNamespace != idsByNamespace {
+            self.idsByNamespace = idsByNamespace
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return ItemCollectionIdsView(self)

submodules/Postbox/Sources/ItemCollectionInfoView.swift

@@ -48,6 +48,10 @@ final class MutableItemCollectionInfoView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return ItemCollectionInfoView(self)

submodules/Postbox/Sources/ItemCollectionInfosView.swift

@@ -90,12 +90,14 @@ final class MutableItemCollectionInfosView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return ItemCollectionInfosView(self)
     }
-    
-   
 }
 
 public final class ItemCollectionInfosView: PostboxView {

submodules/Postbox/Sources/LocalMessageTagsView.swift

@@ -50,6 +50,10 @@ final class MutableLocalMessageTagsView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return LocalMessageTagsView(self)

submodules/Postbox/Sources/MessageHistoryTagSummaryView.swift

@@ -25,6 +25,16 @@ final class MutableMessageHistoryTagSummaryView: MutablePostboxView {
         
         return hasChanges
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let count = postbox.messageHistoryTagsSummaryTable.get(MessageHistoryTagsSummaryKey(tag: self.tag, peerId: self.peerId, namespace: self.namespace))?.count
+        if self.count != count {
+            self.count = count
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return MessageHistoryTagSummaryView(self)

submodules/Postbox/Sources/MessageHistoryView.swift

@@ -739,7 +739,7 @@ final class MutableMessageHistoryView {
                 }
             case let .peerChatState(peerId, _):
                 if transaction.currentUpdatedPeerChatStates.contains(peerId) {
-                    updated[i] = .peerChatState(peerId, postbox.peerChatStateTable.get(peerId) as? PeerChatState)
+                    updated[i] = .peerChatState(peerId, postbox.peerChatStateTable.get(peerId)?.getLegacy() as? PeerChatState)
                     hasChanges = true
                 }
             case .totalUnreadState:

submodules/Postbox/Sources/MessageOfInterestHolesView.swift

@@ -171,6 +171,10 @@ final class MutableMessageOfInterestHolesView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return MessageOfInterestHolesView(self)

submodules/Postbox/Sources/MessagesView.swift

@@ -51,6 +51,10 @@ final class MutableMessagesView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return MessagesView(self)

submodules/Postbox/Sources/MutableBasicPeerView.swift

@@ -42,6 +42,10 @@ final class MutableBasicPeerView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return BasicPeerView(self)

submodules/Postbox/Sources/MutablePeerChatInclusionView.swift

@@ -22,6 +22,10 @@ final class MutablePeerChatInclusionView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return PeerChatInclusionView(self)

submodules/Postbox/Sources/OrderedItemListView.swift

@@ -51,6 +51,10 @@ final class MutableOrderedItemListView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return OrderedItemListView(self)

submodules/Postbox/Sources/PeerChatStateTable.swift

@@ -5,7 +5,7 @@ final class PeerChatStateTable: Table {
         return ValueBoxTable(id: id, keyType: .int64, compactValuesOnCreation: false)
     }
     
-    private var cachedPeerChatStates: [PeerId: PostboxCoding?] = [:]
+    private var cachedPeerChatStates: [PeerId: CodableEntry?] = [:]
     private var updatedPeerIds = Set<PeerId>()
     
     private let sharedKey = ValueBoxKey(length: 8)
@@ -15,11 +15,12 @@ final class PeerChatStateTable: Table {
         return self.sharedKey
     }
     
-    func get(_ id: PeerId) -> PostboxCoding? {
+    func get(_ id: PeerId) -> CodableEntry? {
         if let state = self.cachedPeerChatStates[id] {
             return state
         } else {
-            if let value = self.valueBox.get(self.table, key: self.key(id)), let state = PostboxDecoder(buffer: value).decodeRootObject() {
+            if let value = self.valueBox.get(self.table, key: self.key(id)) {
+                let state = CodableEntry(data: value.makeData())
                 self.cachedPeerChatStates[id] = state
                 return state
             } else {
@@ -29,7 +30,7 @@ final class PeerChatStateTable: Table {
         }
     }
     
-    func set(_ id: PeerId, state: PostboxCoding?) {
+    func set(_ id: PeerId, state: CodableEntry?) {
         self.cachedPeerChatStates[id] = state
         self.updatedPeerIds.insert(id)
     }
@@ -41,12 +42,9 @@ final class PeerChatStateTable: Table {
     
     override func beforeCommit() {
         if !self.updatedPeerIds.isEmpty {
-            let sharedEncoder = PostboxEncoder()
             for id in self.updatedPeerIds {
                 if let wrappedState = self.cachedPeerChatStates[id], let state = wrappedState {
-                    sharedEncoder.reset()
-                    sharedEncoder.encodeRootObject(state)
-                    self.valueBox.set(self.table, key: self.key(id), value: sharedEncoder.readBufferNoCopy())
+                    self.valueBox.set(self.table, key: self.key(id), value: ReadBuffer(data: state.data))
                 } else {
                     self.valueBox.remove(self.table, key: self.key(id), secure: false)
                 }

submodules/Postbox/Sources/PeerChatStateView.swift

@@ -2,7 +2,7 @@ import Foundation
 
 final class MutablePeerChatStateView: MutablePostboxView {
     let peerId: PeerId
-    var chatState: PostboxCoding?
+    var chatState: CodableEntry?
     
     init(postbox: PostboxImpl, peerId: PeerId) {
         self.peerId = peerId
@@ -17,6 +17,16 @@ final class MutablePeerChatStateView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let chatState = postbox.peerChatStateTable.get(self.peerId)
+        if self.chatState != chatState {
+            self.chatState = chatState
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return PeerChatStateView(self)
@@ -25,7 +35,7 @@ final class MutablePeerChatStateView: MutablePostboxView {
 
 public final class PeerChatStateView: PostboxView {
     public let peerId: PeerId
-    public let chatState: PostboxCoding?
+    public let chatState: CodableEntry?
     
     init(_ view: MutablePeerChatStateView) {
         self.peerId = view.peerId

submodules/Postbox/Sources/PeerNotificationSettingsBehaviorTimestampView.swift

@@ -19,6 +19,16 @@ final class MutablePeerNotificationSettingsBehaviorTimestampView: MutablePostbox
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let earliestTimestamp = postbox.peerNotificationSettingsBehaviorTable.getEarliest()?.1
+        if self.earliestTimestamp != earliestTimestamp {
+            self.earliestTimestamp = earliestTimestamp
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return PeerNotificationSettingsBehaviorTimestampView(self)

submodules/Postbox/Sources/PeerNotificationSettingsView.swift

@@ -36,6 +36,43 @@ final class MutablePeerNotificationSettingsView: MutablePostboxView {
             return false
         }
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var notificationSettings: [PeerId: PeerNotificationSettings] = [:]
+        for peerId in self.peerIds {
+            var notificationPeerId = peerId
+            if let peer = postbox.peerTable.get(peerId), let associatedPeerId = peer.associatedPeerId {
+                notificationPeerId = associatedPeerId
+            }
+            if let settings = postbox.peerNotificationSettingsTable.getEffective(notificationPeerId) {
+                notificationSettings[peerId] = settings
+            }
+        }
+
+        var updated = false
+        if self.notificationSettings.count != notificationSettings.count {
+            updated = true
+        } else {
+            for (key, value) in self.notificationSettings {
+                if let other = notificationSettings[key] {
+                    if !other.isEqual(to: value) {
+                        updated = true
+                        break
+                    }
+                } else {
+                    updated = true
+                    break
+                }
+            }
+        }
+
+        if updated {
+            self.notificationSettings = notificationSettings
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return PeerNotificationSettingsView(self)

submodules/Postbox/Sources/PeerPresencesView.swift

@@ -26,6 +26,40 @@ final class MutablePeerPresencesView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var presences: [PeerId: PeerPresence] = [:]
+
+        for id in self.ids {
+            if let presence = postbox.peerPresenceTable.get(id) {
+                presences[id] = presence
+            }
+        }
+
+        var updated = false
+        if self.presences.count != presences.count {
+            updated = true
+        } else {
+            for (key, value) in self.presences {
+                if let other = presences[key] {
+                    if !other.isEqual(to: value) {
+                        updated = true
+                        break
+                    }
+                } else {
+                    updated = true
+                    break
+                }
+            }
+        }
+
+        if updated {
+            self.presences = presences
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return PeerPresencesView(self)

submodules/Postbox/Sources/PeerView.swift

@@ -253,6 +253,10 @@ final class MutablePeerView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return PeerView(self)

submodules/Postbox/Sources/PendingMessageActionsSummaryView.swift

@@ -16,6 +16,10 @@ final class MutablePendingMessageActionsSummaryView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return PendingMessageActionsSummaryView(self)

submodules/Postbox/Sources/PendingMessageActionsView.swift

@@ -38,6 +38,10 @@ final class MutablePendingMessageActionsView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return PendingMessageActionsView(self)

submodules/Postbox/Sources/PendingPeerNotificationSettingsView.swift

@@ -25,6 +25,10 @@ final class MutablePendingPeerNotificationSettingsView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
     
     func immutableView() -> PostboxView {
         return PendingPeerNotificationSettingsView(self)

submodules/Postbox/Sources/Postbox.swift

@@ -2212,7 +2212,7 @@ final class PostboxImpl {
     }
     
     fileprivate func setPeerChatState(_ id: PeerId, state: PeerChatState) {
-        self.peerChatStateTable.set(id, state: state)
+        self.peerChatStateTable.set(id, state: CodableEntry(legacyValue: state))
         self.currentUpdatedPeerChatStates.insert(id)
     }
     

submodules/Postbox/Sources/PostboxView.swift

@@ -5,6 +5,7 @@ public protocol PostboxView {
 
 protocol MutablePostboxView {
     func replay(postbox: PostboxImpl, transaction: PostboxTransaction) -> Bool
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool
     func immutableView() -> PostboxView
 }
 
@@ -24,6 +25,16 @@ final class CombinedMutableView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var updated = false
+        for (_, view) in self.views {
+            if view.refreshDueToExternalTransaction(postbox: postbox) {
+                updated = true
+            }
+        }
+        return updated
+    }
     
     func immutableView() -> CombinedView {
         var result: [PostboxViewKey: PostboxView] = [:]

submodules/Postbox/Sources/PreferencesEntry.swift

@@ -13,11 +13,37 @@ public final class CodableEntry: Equatable {
         self.data = encoder.makeData()
     }
 
+    public init(legacyValue: PostboxCoding) {
+        let encoder = PostboxEncoder()
+        encoder.encodeRootObject(legacyValue)
+        self.data = encoder.makeData()
+    }
+
     public func get<T: Decodable>(_ type: T.Type) -> T? {
         let decoder = PostboxDecoder(buffer: MemoryBuffer(data: self.data))
         return decoder.decode(T.self, forKey: "_")
     }
 
+    public func getLegacy<T: PostboxCoding>(_ type: T.Type) -> T? {
+        let decoder = PostboxDecoder(buffer: MemoryBuffer(data: self.data))
+        let object = decoder.decodeRootObject()
+        if let object = object as? T {
+            return object
+        } else {
+            return nil
+        }
+    }
+
+    public func getLegacy() -> PostboxCoding? {
+        let decoder = PostboxDecoder(buffer: MemoryBuffer(data: self.data))
+        let object = decoder.decodeRootObject()
+        if let object = object {
+            return object
+        } else {
+            return nil
+        }
+    }
+
     public static func ==(lhs: CodableEntry, rhs: CodableEntry) -> Bool {
         return lhs.data == rhs.data
     }

submodules/Postbox/Sources/PreferencesView.swift

@@ -44,6 +44,21 @@ final class MutablePreferencesView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var values: [ValueBoxKey: PreferencesEntry] = [:]
+        for key in self.keys {
+            if let value = postbox.preferencesTable.get(key: key) {
+                values[key] = value
+            }
+        }
+        if self.values != values {
+            self.values = values
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return PreferencesView(self)

submodules/Postbox/Sources/SynchronizeGroupMessageStatsView.swift

@@ -26,6 +26,16 @@ final class MutableSynchronizeGroupMessageStatsView: MutablePostboxView {
         }
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let groupsAndNamespaces = postbox.synchronizeGroupMessageStatsTable.get()
+        if self.groupsAndNamespaces != groupsAndNamespaces {
+            self.groupsAndNamespaces = groupsAndNamespaces
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return SynchronizeGroupMessageStatsView(self)

submodules/Postbox/Sources/TopChatMessageView.swift

@@ -29,6 +29,41 @@ final class MutableTopChatMessageView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        var messages: [PeerId: Message] = [:]
+
+        for peerId in self.peerIds {
+            if let index = postbox.chatListIndexTable.get(peerId: peerId).topMessageIndex {
+                messages[peerId] = postbox.getMessage(index.id)
+            }
+        }
+
+        var updated = false
+
+        if self.messages.count != messages.count {
+            updated = true
+        } else {
+            for (key, value) in self.messages {
+                if let other = messages[key] {
+                    if other.stableId != value.stableId || other.stableVersion != value.stableVersion {
+                        updated = true
+                        break
+                    }
+                } else {
+                    updated = true
+                    break
+                }
+            }
+        }
+
+        if updated {
+            self.messages = messages
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return TopChatMessageView(self)

submodules/Postbox/Sources/UnreadMessageCountsView.swift

@@ -6,10 +6,42 @@ public enum UnreadMessageCountsItem: Equatable {
     case peer(PeerId)
 }
 
-private enum MutableUnreadMessageCountsItemEntry {
+private enum MutableUnreadMessageCountsItemEntry: Equatable {
     case total((ValueBoxKey, PreferencesEntry?)?, ChatListTotalUnreadState)
     case totalInGroup(PeerGroupId, ChatListTotalUnreadState)
     case peer(PeerId, CombinedPeerReadState?)
+
+    static func ==(lhs: MutableUnreadMessageCountsItemEntry, rhs: MutableUnreadMessageCountsItemEntry) -> Bool {
+        switch lhs {
+        case let .total(lhsKeyAndEntry, lhsUnreadState):
+            if case let .total(rhsKeyAndEntry, rhsUnreadState) = rhs {
+                if lhsKeyAndEntry?.0 != rhsKeyAndEntry?.0 {
+                    return false
+                }
+                if lhsKeyAndEntry?.1 != rhsKeyAndEntry?.1 {
+                    return false
+                }
+                if lhsUnreadState != rhsUnreadState {
+                    return false
+                }
+                return true
+            } else {
+                return false
+            }
+        case let .totalInGroup(groupId, state):
+            if case .totalInGroup(groupId, state) = rhs {
+                return true
+            } else {
+                return false
+            }
+        case let .peer(peerId, readState):
+            if case .peer(peerId, readState) = rhs {
+                return true
+            } else {
+                return false
+            }
+        }
+    }
 }
 
 public enum UnreadMessageCountsItemEntry {
@@ -19,9 +51,12 @@ public enum UnreadMessageCountsItemEntry {
 }
 
 final class MutableUnreadMessageCountsView: MutablePostboxView {
+    private let items: [UnreadMessageCountsItem]
     fileprivate var entries: [MutableUnreadMessageCountsItemEntry]
     
     init(postbox: PostboxImpl, items: [UnreadMessageCountsItem]) {
+        self.items = items
+
         self.entries = items.map { item in
             switch item {
             case let .total(preferencesKey):
@@ -80,6 +115,25 @@ final class MutableUnreadMessageCountsView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let entries: [MutableUnreadMessageCountsItemEntry] = self.items.map { item -> MutableUnreadMessageCountsItemEntry in
+            switch item {
+            case let .total(preferencesKey):
+                return .total(preferencesKey.flatMap({ ($0, postbox.preferencesTable.get(key: $0)) }), postbox.messageHistoryMetadataTable.getTotalUnreadState(groupId: .root))
+            case let .totalInGroup(groupId):
+                return .totalInGroup(groupId, postbox.messageHistoryMetadataTable.getTotalUnreadState(groupId: groupId))
+            case let .peer(peerId):
+                return .peer(peerId, postbox.readStateTable.getCombinedState(peerId))
+            }
+        }
+        if self.entries != entries {
+            self.entries = entries
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return UnreadMessageCountsView(self)
@@ -151,6 +205,16 @@ final class MutableCombinedReadStateView: MutablePostboxView {
         
         return updated
     }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let state = postbox.readStateTable.getCombinedState(self.peerId)
+        if state != self.state {
+            self.state = state
+            return true
+        } else {
+            return false
+        }
+    }
     
     func immutableView() -> PostboxView {
         return CombinedReadStateView(self)