Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/Postbox/Sources/IsContactView.swift

@@ -0,0 +1,43 @@
+import Foundation
+
+final class MutableIsContactView: MutablePostboxView {
+    fileprivate let id: PeerId
+    fileprivate var isContact: Bool
+
+    init(postbox: PostboxImpl, id: PeerId) {
+        self.id = id
+        self.isContact = postbox.contactsTable.isContact(peerId: self.id)
+    }
+    
+    func replay(postbox: PostboxImpl, transaction: PostboxTransaction) -> Bool {
+        var updated = false
+        if transaction.replaceContactPeerIds != nil {
+            let isContact = postbox.contactsTable.isContact(peerId: self.id)
+            if self.isContact != isContact {
+                self.isContact = isContact
+                updated = true
+            }
+        }
+        if updated {
+            return true
+        } else {
+            return false
+        }
+    }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        return false
+    }
+    
+    func immutableView() -> PostboxView {
+        return IsContactView(self)
+    }
+}
+
+public final class IsContactView: PostboxView {
+    public let isContact: Bool
+    
+    init(_ view: MutableIsContactView) {
+        self.isContact = view.isContact
+    }
+}