smooth the hide and show of the input accessory view

Session/Conversations/ConversationVC+Interaction.swift

@@ -546,10 +546,19 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
     }
     
     func delete(_ viewItem: ConversationViewItem) {
+        
+        func showInputAccessoryView() {
+            UIView.animate(withDuration: 0.25, animations: {
+                self.inputAccessoryView?.isHidden = false
+                self.inputAccessoryView?.alpha = 1
+            })
+        }
+        
         if viewItem.interaction.interactionType() == .outgoingMessage {
             let alertVC = UIAlertController.init(title: nil, message: nil, preferredStyle: .actionSheet)
             let deleteLocallyAction = UIAlertAction.init(title: NSLocalizedString("delete_message_for_me", comment: ""), style: .destructive) { _ in
                 self.deleteLocally(viewItem)
+                showInputAccessoryView()
             }
             alertVC.addAction(deleteLocallyAction)
             
@@ -559,12 +568,18 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
             }
             let deleteRemotelyAction = UIAlertAction.init(title: title, style: .destructive) { _ in
                 self.deleteForEveryone(viewItem)
+                showInputAccessoryView()
             }
             alertVC.addAction(deleteRemotelyAction)
             
-            let cancelAction = UIAlertAction.init(title: NSLocalizedString("TXT_CANCEL_TITLE", comment: ""), style: .cancel, handler: nil)
+            let cancelAction = UIAlertAction.init(title: NSLocalizedString("TXT_CANCEL_TITLE", comment: ""), style: .cancel) {_ in
+                showInputAccessoryView()
+            }
             alertVC.addAction(cancelAction)
-            self.navigationController?.presentAlert(alertVC)
+            
+            self.inputAccessoryView?.isHidden = true
+            self.inputAccessoryView?.alpha = 0
+            self.presentAlert(alertVC)
         } else {
             deleteLocally(viewItem)
         }