Fix RSS feed UI bug

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.h

@@ -78,6 +78,8 @@ NS_ASSUME_NONNULL_BEGIN
 
 @property (nonatomic, nullable, readonly) OWSLinkPreviewDraft *linkPreviewDraft;
 
+- (void)hideInputMethod;
+
 @end
 
 NS_ASSUME_NONNULL_END

Signal/src/ViewControllers/ConversationView/ConversationInputToolbar.m

@@ -61,6 +61,7 @@ const CGFloat kMaxTextViewHeight = 98;
 @property (nonatomic, readonly) UIButton *voiceMemoButton;
 @property (nonatomic, readonly) UIView *quotedReplyWrapper;
 @property (nonatomic, readonly) UIView *linkPreviewWrapper;
+@property (nonatomic, readonly) UIView *borderView;
 
 @property (nonatomic) CGFloat textViewHeight;
 @property (nonatomic, readonly) NSLayoutConstraint *textViewHeightConstraint;
@@ -250,17 +251,17 @@ const CGFloat kMaxTextViewHeight = 98;
     // The border must reside _outside_ of vStackWrapper so
     // that it doesn't run afoul of its clipping, so we can't
     // use addBorderViewWithColor.
-    UIView *borderView = [UIView new];
-    borderView.userInteractionEnabled = NO;
-    borderView.backgroundColor = UIColor.clearColor;
-    borderView.opaque = NO;
-    borderView.layer.borderColor = Theme.secondaryColor.CGColor;
-    borderView.layer.borderWidth = CGHairlineWidth();
-    borderView.layer.cornerRadius = vStackRounding;
-    [self addSubview:borderView];
-    [borderView autoPinToEdgesOfView:vStackWrapper];
-    [borderView setCompressionResistanceLow];
-    [borderView setContentHuggingLow];
+    _borderView = [UIView new];
+    self.borderView.userInteractionEnabled = NO;
+    self.borderView.backgroundColor = UIColor.clearColor;
+    self.borderView.opaque = NO;
+    self.borderView.layer.borderColor = Theme.secondaryColor.CGColor;
+    self.borderView.layer.borderWidth = CGHairlineWidth();
+    self.borderView.layer.cornerRadius = vStackRounding;
+    [self addSubview:self.borderView];
+    [self.borderView autoPinToEdgesOfView:vStackWrapper];
+    [self.borderView setCompressionResistanceLow];
+    [self.borderView setContentHuggingLow];
 
     [self ensureShouldShowVoiceMemoButtonAnimated:NO doLayout:NO];
 }
@@ -1069,6 +1070,12 @@ const CGFloat kMaxTextViewHeight = 98;
     [self clearLinkPreviewStateAndView];
 }
 
+- (void)hideInputMethod
+{
+    self.hStack.hidden = YES;
+    self.borderView.hidden = YES;
+}
+
 @end
 
 NS_ASSUME_NONNULL_END

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -579,12 +579,16 @@ typedef enum : NSUInteger {
         return;
     }
 
-    if (self.userLeftGroup || self.isRSSFeed) {
+    if (self.userLeftGroup) {
         self.inputToolbar.hidden = YES; // user has requested they leave the group. further sends disallowed
         [self dismissKeyBoard];
     } else {
         self.inputToolbar.hidden = NO;
     }
+
+    if (self.isRSSFeed) {
+        [self.inputToolbar hideInputMethod];
+    }
 }
 
 - (void)viewDidLoad