show msg for empty search result

app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsFragment.kt

@@ -163,7 +163,11 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
             /*val diff = async(CommonPool) {
                 DiffUtil.calculateDiff(RoomsDiffCallback(adapter.baseAdapter.dataSet, newDataSet))
             }.await()*/
-
+            if (newDataSet.isEmpty()) {
+                text_no_search.visibility = View.VISIBLE
+            }else{
+                text_no_search.visibility = View.GONE
+            }
             if (isActive) {
                 adapter.baseAdapter.updateRooms(newDataSet)
                 // TODO - fix crash to re-enable diff.dispatchUpdatesTo(adapter)

app/src/main/res/layout/fragment_chat_rooms.xml

@@ -45,4 +45,15 @@
         tools:text="connected"
         tools:visibility="visible" />
 
+    <TextView
+        android:id="@+id/text_no_search"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="56dp"
+        android:text="@string/msg_no_search_found"
+        android:textSize="20sp"
+        android:layout_centerHorizontal="true"
+        android:visibility="gone"
+        tools:visibility="visible" />
+
 </RelativeLayout>
\ No newline at end of file

app/src/main/res/values-es/strings.xml

@@ -111,6 +111,7 @@
     <string name="msg_no_chat_title">Sin mensajes de chat</string>
     <string name="msg_no_chat_description">Comience a conversar para ver\nsus mensajes aquí.</string>
     <string name="msg_edited">(editado)</string>
+    <string name="msg_no_search_found">No se han encontrado resultados</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Nombre de la sala cambiado para: %1$s por %2$s</string>

app/src/main/res/values-fr/strings.xml

@@ -111,6 +111,7 @@
     <string name="msg_no_chat_title">Aucun message de discussion</string>
     <string name="msg_no_chat_description">Commencez à converser pour voir\nvos messages ici.</string>
     <string name="msg_edited">(édité)</string>
+    <string name="msg_no_search_found">Aucun résultat trouvé</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Le nom de le salle a changé à: %1$s par %2$s</string>

app/src/main/res/values-hi-rIN/strings.xml

@@ -113,6 +113,7 @@
     <string name="msg_no_chat_title">कोई चैट संदेश नहीं</string>
     <string name="msg_no_chat_description">यहां अपने संदेश देखने के लिए\nबातचीत शुरू करें।</string>
     <string name="msg_edited">(संपादित)</string>
+    <string name="msg_no_search_found">कोई परिणाम नहीं मिला</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">%2$s ने रूम का नाम बदलकर %1$s किया</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -107,6 +107,7 @@
     <string name="msg_image_saved_successfully">Imagem salva na galeria</string>
     <string name="msg_image_saved_failed">Falha ao salvar a imagem</string>
     <string name="msg_edited">(editado)</string>
+    <string name="msg_no_search_found">nenhum resultado encontrado</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Nome da sala alterado para: %1$s por %2$s</string>

app/src/main/res/values/strings.xml

@@ -108,6 +108,7 @@
     <string name="msg_image_saved_successfully">Image has been saved to gallery</string>
     <string name="msg_image_saved_failed">Failed to save image</string>
     <string name="msg_edited">(edited)</string>
+    <string name="msg_no_search_found">No result found</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Room name changed to: %1$s by %2$s</string>