Improve code.

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

@@ -809,39 +809,46 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         recycler_view.addOnScrollListener(fabScrollListener)
 
         if (!isReadOnly) {
-            val touchCallback: ItemTouchHelper.SimpleCallback = object : ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
-                override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder): Boolean {
-                    return true
-                }
+            val touchCallback: ItemTouchHelper.SimpleCallback =
+                object : ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
+                    override fun onMove(
+                        recyclerView: RecyclerView,
+                        viewHolder: RecyclerView.ViewHolder,
+                        target: RecyclerView.ViewHolder
+                    ): Boolean {
+                        return true
+                    }
 
-                override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
-                    var replyId: String? = null
+                    override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+                        var replyId: String? = null
 
-                    when (viewHolder) {
-                        is MessageViewHolder -> replyId = viewHolder.data?.messageId
-                        is AttachmentViewHolder -> replyId = viewHolder.data?.messageId
-                    }
+                        when (viewHolder) {
+                            is MessageViewHolder -> replyId = viewHolder.data?.messageId
+                            is AttachmentViewHolder -> replyId = viewHolder.data?.messageId
+                        }
+
+                        replyId?.let {
+                            citeMessage(chatRoomName, chatRoomType, it, true)
+                        }
 
-                    replyId?.let {
-                        citeMessage(chatRoomName, chatRoomType, it, true)
+                        adapter.notifyItemChanged(viewHolder.adapterPosition)
                     }
 
-                    adapter.notifyItemChanged(viewHolder.adapterPosition)
-                }
+                    override fun getSwipeDirs(
+                        recyclerView: RecyclerView,
+                        viewHolder: RecyclerView.ViewHolder
+                    ): Int {
+                        // Currently enable swipes for text and attachment messages only
 
-                override fun getSwipeDirs(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder): Int {
-                    // Currently enable swipes for text and attachment messages only
+                        if (viewHolder is MessageViewHolder || viewHolder is AttachmentViewHolder) {
+                            return super.getSwipeDirs(recyclerView, viewHolder)
+                        }
 
-                    if (viewHolder is MessageViewHolder || viewHolder is AttachmentViewHolder) {
-                        return super.getSwipeDirs(recyclerView, viewHolder)
+                        return 0
                     }
-
-                    return 0
                 }
-            }
 
-            val itemTouchHelper = ItemTouchHelper(touchCallback)
-            itemTouchHelper.attachToRecyclerView(recycler_view)
+            ItemTouchHelper(touchCallback).attachToRecyclerView(recycler_view)
         }
     }