[apps/code] Handle Home event when in the toolbox

If editing a script, the empty space at the end of the script should be
moved to the end of the storage.

apps/code/app.cpp

@@ -105,6 +105,10 @@ bool App::handleEvent(Ion::Events::Event event) {
   return false;
 }
 
+void App::willExitResponderChain(Responder * nextFirstResponder) {
+  m_menuController.willExitApp();
+}
+
 Toolbox * App::toolboxForInputEventHandler(InputEventHandler * textInput) {
   return &m_toolbox;
 }

apps/code/app.h

@@ -52,6 +52,7 @@ public:
 
   /* Responder */
   bool handleEvent(Ion::Events::Event event) override;
+  void willExitResponderChain(Responder * nextFirstResponder) override;
 
   /* InputEventHandlerDelegate */
   Toolbox * toolboxForInputEventHandler(InputEventHandler * textInput) override;

apps/code/editor_controller.cpp

@@ -38,15 +38,16 @@ void EditorController::setScript(Script script) {
   m_editorView.setText(const_cast<char *>(m_script.scriptContent()), newScriptSize - Script::k_importationStatusSize);
 }
 
+void EditorController::willExitApp() {
+  cleanStorageEmptySpace();
+}
+
 // TODO: this should be done in textAreaDidFinishEditing maybe??
 bool EditorController::handleEvent(Ion::Events::Event event) {
   if (event == Ion::Events::OK || event == Ion::Events::Back || event == Ion::Events::Home || event == Ion::Events::USBEnumeration) {
     /* Exit the edition on USB enumeration, because the storage needs to be in a
      * "clean" state (with all records packed at the beginning of the storage) */
-    Ion::Storage::Record::Data scriptValue = m_script.value();
-    Ion::Storage::sharedStorage()->getAvailableSpaceFromEndOfRecord(
-        m_script,
-        scriptValue.size - Script::k_importationStatusSize - (strlen(m_script.scriptContent()) + 1)); // TODO optimize number of script fetches
+    cleanStorageEmptySpace();
     stackController()->pop();
     return event != Ion::Events::Home && event != Ion::Events::USBEnumeration;
   }
@@ -128,4 +129,15 @@ StackViewController * EditorController::stackController() {
   return static_cast<StackViewController *>(parentResponder());
 }
 
+void EditorController::cleanStorageEmptySpace() {
+  if (m_script.isNull()) {
+    return;
+  }
+  Ion::Storage::Record::Data scriptValue = m_script.value();
+  Ion::Storage::sharedStorage()->getAvailableSpaceFromEndOfRecord(
+      m_script,
+      scriptValue.size - Script::k_importationStatusSize - (strlen(m_script.scriptContent()) + 1)); // TODO optimize number of script fetches
+}
+
+
 }

apps/code/editor_controller.h

@@ -17,6 +17,7 @@ class EditorController : public ViewController, public TextAreaDelegate, public
 public:
   EditorController(MenuController * menuController, App * pythonDelegate);
   void setScript(Script script);
+  void willExitApp();
 
   /* ViewController */
   View * view() override { return &m_editorView; }
@@ -33,6 +34,7 @@ public:
   VariableBoxController * variableBoxForInputEventHandler(InputEventHandler * textInput) override;
 
 private:
+  void cleanStorageEmptySpace();
   StackViewController * stackController();
   EditorView m_editorView;
   Script m_script;

apps/code/menu_controller.cpp

@@ -156,6 +156,10 @@ void MenuController::scriptContentEditionDidFinish() {
   reloadConsole();
 }
 
+void MenuController::willExitApp() {
+  m_editorController.willExitApp();
+}
+
 int MenuController::numberOfRows() const {
   return m_scriptStore->numberOfScripts() + m_shouldDisplayAddScriptRow;
 }

apps/code/menu_controller.h

@@ -23,6 +23,7 @@ public:
   void reloadConsole();
   void openConsoleWithScript(Script script);
   void scriptContentEditionDidFinish();
+  void willExitApp();
 
   /* ViewController */
   View * view() override { return &m_selectableTableView; }