From 5107343a448c0ec53f4c5284f63f30b0d0a5c1b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Tue, 2 Jan 2018 17:01:40 +0100
Subject: [PATCH] [ExpressionEditor] Handle EXE events: show serialized layout.

Change-Id: I19be0ab5263cba42caca2ca71fe0082f3339e473
---
 apps/expression_editor/controller.cpp | 9 +++++++++
 apps/expression_editor/controller.h   | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/apps/expression_editor/controller.cpp b/apps/expression_editor/controller.cpp
index 1679d3303..888192d9f 100644
--- a/apps/expression_editor/controller.cpp
+++ b/apps/expression_editor/controller.cpp
@@ -29,6 +29,10 @@ void Controller::didBecomeFirstResponder() {
 }
 
 bool Controller::handleEvent(Ion::Events::Event event) {
+  if (event == Ion::Events::EXE) {
+    serializeLayout();
+    return true;
+  }
   if (privateHandleEvent(event)) {
     m_view.cursorPositionChanged();
     return true;
@@ -139,4 +143,9 @@ bool Controller::handleDeleteEvent(Ion::Events::Event event) {
   return false;
 }
 
+void Controller::serializeLayout() {
+  m_expressionLayout->writeTextInBuffer(m_buffer, k_bufferSize);
+  m_view.setText(const_cast<const char *>(m_buffer));
+}
+
 }
diff --git a/apps/expression_editor/controller.h b/apps/expression_editor/controller.h
index 3910844fa..e777e4103 100644
--- a/apps/expression_editor/controller.h
+++ b/apps/expression_editor/controller.h
@@ -29,9 +29,12 @@ private:
   bool handleMoveEvent(Ion::Events::Event event);
   Poincare::ExpressionLayout * handleAddEvent(Ion::Events::Event event);
   bool handleDeleteEvent(Ion::Events::Event event);
+  void serializeLayout();
   ExpressionEditorView m_view;
   Poincare::ExpressionLayout * m_expressionLayout;
   Poincare::ExpressionLayoutCursor m_cursor;
+  static constexpr int k_bufferSize = 256;
+  char m_buffer[k_bufferSize];
 };
 
 }