Treat groups with only 1 child as child directly in chat room devices fragment

app/src/main/java/org/linphone/chat/DeviceGroupViewHolder.java

@@ -28,12 +28,13 @@ import org.linphone.R;
 class DeviceGroupViewHolder {
     public final RelativeLayout avatarLayout;
     public final TextView participantName, sipUri;
-    public final ImageView groupExpander;
+    public final ImageView groupExpander, securityLevel;
 
     public DeviceGroupViewHolder(View v) {
         avatarLayout = v.findViewById(R.id.avatar_layout);
         participantName = v.findViewById(R.id.name);
         sipUri = v.findViewById(R.id.sipUri);
         groupExpander = v.findViewById(R.id.dropdown);
+        securityLevel = v.findViewById(R.id.device_security_level);
     }
 }

app/src/main/java/org/linphone/chat/DevicesAdapter.java

@@ -33,6 +33,7 @@ import org.linphone.core.Address;
 import org.linphone.core.ChatRoomSecurityLevel;
 import org.linphone.core.Participant;
 import org.linphone.core.ParticipantDevice;
+import org.linphone.core.tools.Log;
 import org.linphone.utils.LinphoneUtils;
 import org.linphone.views.ContactAvatar;
 
@@ -127,8 +128,31 @@ class DevicesAdapter extends BaseExpandableListAdapter {
                 holder.sipUri.setVisibility(View.GONE);
             }
 
-            holder.groupExpander.setImageResource(
+            if (getChildrenCount(groupPosition) == 1) {
-                    isExpanded ? R.drawable.chevron_list_open : R.drawable.chevron_list_close);
+                holder.securityLevel.setVisibility(View.VISIBLE);
+                holder.groupExpander.setVisibility(View.GONE);
+
+                ParticipantDevice device = (ParticipantDevice) getChild(groupPosition, 0);
+                ChatRoomSecurityLevel level = device.getSecurityLevel();
+                switch (level) {
+                    case Safe:
+                        holder.securityLevel.setImageResource(R.drawable.security_2_indicator);
+                        break;
+                    case Encrypted:
+                        holder.securityLevel.setImageResource(R.drawable.security_1_indicator);
+                        break;
+                    case ClearText:
+                    case Unsafe:
+                    default:
+                        holder.securityLevel.setImageResource(R.drawable.security_alert_indicator);
+                        break;
+                }
+            } else {
+                holder.securityLevel.setVisibility(View.GONE);
+                holder.groupExpander.setVisibility(View.VISIBLE);
+                holder.groupExpander.setImageResource(
+                        isExpanded ? R.drawable.chevron_list_open : R.drawable.chevron_list_close);
+            }
         }
 
         return view;

app/src/main/java/org/linphone/chat/DevicesFragment.java

@@ -103,6 +103,13 @@ public class DevicesFragment extends Fragment {
                                     (ParticipantDevice) mAdapter.getGroup(groupPosition);
                             CallManager.getInstance().inviteAddress(device.getAddress(), true);
                             return true;
+                        } else {
+                            if (mAdapter.getChildrenCount(groupPosition) == 1) {
+                                ParticipantDevice device =
+                                        (ParticipantDevice) mAdapter.getChild(groupPosition, 0);
+                                CallManager.getInstance().inviteAddress(device.getAddress(), true);
+                                return true;
+                            }
                         }
                         return false;
                     }

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

@@ -53,6 +53,15 @@
 
         </LinearLayout>
 
+        <ImageView
+            android:id="@+id/device_security_level"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_alignParentRight="true"
+            android:layout_centerVertical="true"
+            android:layout_marginRight="10dp"
+            android:src="@drawable/security_alert_indicator" />
+
         <ImageView
             android:id="@id/dropdown"
             android:layout_width="wrap_content"