From 894e8a603290f2168f71b6bd90c9b345a84f273e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Fri, 22 Dec 2017 17:36:44 +0100
Subject: [PATCH] [poincare] Fix main layout edition.

If its only child is empty, remove it before adding another child.

Change-Id: I3047f17c69ff14787e172d99b6e0b3e1f4096f26
---
 poincare/src/layout/expression_layout.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/poincare/src/layout/expression_layout.cpp b/poincare/src/layout/expression_layout.cpp
index 3b5bc8316..d4410fb08 100644
--- a/poincare/src/layout/expression_layout.cpp
+++ b/poincare/src/layout/expression_layout.cpp
@@ -141,6 +141,10 @@ void ExpressionLayout::addBrother(ExpressionLayoutCursor * cursor, ExpressionLay
   }
   // If there is no parent, the pointed layout is the main horizontal layout.
   // Add the "brother" as a child.
+  // If there is only one empty child, remove it before adding the layout.
+  if (numberOfChildren() == 1 && editableChild(0)->isEmpty()) {
+    removeChildAtIndex(0, true);
+  }
   if (cursor->position() == ExpressionLayoutCursor::Position::Left) {
     addChildAtIndex(brother, 0);
     return;