Update UI to reflect changes to disappearing messages configuration.

Signal/src/ViewControllers/ConversationView/Cells/OWSMessageCell.m

@@ -1134,19 +1134,6 @@ NS_ASSUME_NONNULL_BEGIN
     }
 }
 
-// case TSInfoMessageAdapter: {
-//    // HACK this will get called when we get a new info message, but there's gotta be a better spot for this.
-//    OWSDisappearingMessagesConfiguration *configuration =
-//    [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:self.thread.uniqueId];
-//    [self setBarButtonItemsForDisappearingMessagesConfiguration:configuration];
-//
-//    if (message.shouldStartExpireTimer && [cell conformsToProtocol:@protocol(OWSExpirableMessageView)]) {
-//        id<OWSExpirableMessageView> expirableView = (id<OWSExpirableMessageView>)cell;
-//        [expirableView startExpirationTimerWithExpiresAtSeconds:message.expiresAtSeconds
-//                                         initialDurationSeconds:message.expiresInSeconds];
-//    }
-//
-
 #pragma mark - Gesture recognizers
 
 - (void)handleTapGesture:(UITapGestureRecognizer *)sender

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -586,10 +586,7 @@ typedef NS_ENUM(NSInteger, MessagesRangeSizeMode) {
     // unless it ever becomes possible to load this VC without going via the HomeViewController.
     [self.contactsManager requestSystemContactsOnce];
 
-    [self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *_Nonnull transaction) {
-        self.disappearingMessagesConfiguration =
-            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:self.thread.uniqueId transaction:transaction];
-    }];
+    [self updateDisappearingMessagesConfiguration];
 
     [self updateBarButtonItems];
     [self setNavigationTitle];
@@ -1528,6 +1525,14 @@ typedef NS_ENUM(NSInteger, MessagesRangeSizeMode) {
     }
 }
 
+- (void)updateDisappearingMessagesConfiguration
+{
+    [self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *_Nonnull transaction) {
+        self.disappearingMessagesConfiguration =
+            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:self.thread.uniqueId transaction:transaction];
+    }];
+}
+
 - (void)setDisappearingMessagesConfiguration:
     (nullable OWSDisappearingMessagesConfiguration *)disappearingMessagesConfiguration
 {
@@ -2818,10 +2823,7 @@ typedef NS_ENUM(NSInteger, MessagesRangeSizeMode) {
         [self setNavigationTitle];
     }
 
-    [self.uiDatabaseConnection readWithBlock:^(YapDatabaseReadTransaction *_Nonnull transaction) {
-        self.disappearingMessagesConfiguration =
-            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:self.thread.uniqueId transaction:transaction];
-    }];
+    [self updateDisappearingMessagesConfiguration];
 
     if (![[self.uiDatabaseConnection ext:TSMessageDatabaseViewExtensionName] hasChangesForGroup:self.thread.uniqueId
                                                                                 inNotifications:notifications]) {