Partially fix remaining UI issues

Signal/Signal-Prefix.pch

@@ -19,4 +19,5 @@
     #import <SignalCoreKit/OWSAsserts.h>
     #import <SignalServiceKit/SSKAsserts.h>
     #import <SignalServiceKit/OWSAnalytics.h>
+    #import <SignalServiceKit/NSObject.h>
 #endif

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -406,7 +406,7 @@ typedef enum : NSUInteger {
                                                  name:UIKeyboardDidChangeFrameNotification
                                                object:nil];
     [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(resetContentAndLayout)
+                                             selector:@selector(handleThreadFriendRequestStatusChangedNotification:)
                                                  name:@"threadFriendRequestStatusChanged"
                                                object:nil];
 }
@@ -472,6 +472,14 @@ typedef enum : NSUInteger {
     [self ensureBannerState];
 }
 
+- (void)handleThreadFriendRequestStatusChangedNotification:(NSNotification *)notification
+{
+    [self.thread reload];
+    [self.viewItems.lastObject clearCachedLayoutState]; // Presumably a cell with a friend request view
+    [self resetContentAndLayout];
+    [self updateInputToolbar];
+}
+
 - (void)peekSetup
 {
     _peek = YES;

Signal/src/ViewControllers/ConversationView/ConversationViewItem.m

@@ -402,11 +402,12 @@ NSString *NSStringForOWSMessageCellType(OWSMessageCellType cellType)
         && previousLayoutItem.interaction.interactionType == OWSInteractionType_IncomingMessage) {
         TSIncomingMessage *incomingMessage = (TSIncomingMessage *)self.interaction;
         TSIncomingMessage *previousIncomingMessage = (TSIncomingMessage *)previousLayoutItem.interaction;
-        if ([incomingMessage.authorId isEqualToString:previousIncomingMessage.authorId]) {
+        if ([incomingMessage.authorId isEqualToString:previousIncomingMessage.authorId] && !previousIncomingMessage.isFriendRequest) {
             return 2.f;
         }
     } else if (self.interaction.interactionType == OWSInteractionType_OutgoingMessage
-        && previousLayoutItem.interaction.interactionType == OWSInteractionType_OutgoingMessage) {
+        && previousLayoutItem.interaction.interactionType == OWSInteractionType_OutgoingMessage
+        && !([previousLayoutItem.interaction isKindOfClass:TSOutgoingMessage.class] && ((TSOutgoingMessage *)previousLayoutItem.interaction).isFriendRequest)) {
         return 2.f;
     }
 

SignalServiceKit/src/Loki/Extensions/NSObject.h

@@ -0,0 +1,6 @@
+
+@interface NSObject (Casting)
+
+- (instancetype)as:(Class)cls;
+
+@end

SignalServiceKit/src/Loki/Extensions/NSObject.m

@@ -0,0 +1,10 @@
+#import "NSObject.h"
+
+@implementation NSObject (Casting)
+
+- (instancetype)as:(Class)cls {
+    if ([self isKindOfClass:cls]) { return self; }
+    return nil;
+}
+
+@end

SignalServiceKit/src/TSPrefix.h

@@ -12,6 +12,7 @@ static const NSUInteger ddLogLevel = DDLogLevelAll;
 static const NSUInteger ddLogLevel = DDLogLevelInfo;
 #endif
 #import "OWSAnalytics.h"
+#import "NSObject.h"
 #import "SSKAsserts.h"
 #import "TSConstants.h"
 #import <SignalCoreKit/NSObject+OWS.h>