From 1298c791961af7d23eafdda85b89bdabd3dfdc1a Mon Sep 17 00:00:00 2001
From: Christian Colglazier <christian@cacolglazier.com>
Date: Sun, 31 Oct 2021 09:41:21 -0400
Subject: [PATCH] Menu switching text

---
 src/menu.cpp      | 27 ++++++++++++++-------------
 src/menu.h        | 26 +++++++++++---------------
 src/menu_item.cpp | 18 ++++++++++++++++++
 src/menu_item.h   | 31 +++++++++++++++++++++++++++++++
 4 files changed, 74 insertions(+), 28 deletions(-)

diff --git a/src/menu.cpp b/src/menu.cpp
index 61524b1..d6f3c3d 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -8,21 +8,22 @@ Menu::Menu(DaisyPatch* m_patch,
   manager = m_manager;
 
   head = new MenuItem(MenuState::kSplit, "Split");
-  head->AddItemEnd(new MenuItem(MenuState::kChange, "Right"));
+  head->AddItemEnd(new MenuItem(MenuState::kChange, ""));
   head->AddItemEnd(new MenuItem(MenuState::kVCO, "VCO"));
   head->AddItemEnd(new MenuItem(MenuState::kNoise, "Noise"));
+  
   selected = head;
   buffer = selected;
   highlighted = selected;
+
+  head->SetStateVisibility(MenuState::kChange, false);
+
+  if (state == DropletState::kLeft) {
+    head->SetStateTitle(MenuState::kChange, "Right");
+  } else if (state == DropletState::kRight) {
+    head->SetStateTitle(MenuState::kChange, "Left");
+  }
 }
-const std::string MENU_ITEMS[] = {"Split",
-  "Change",
-  "VCO", 
-  "Noise"};
-const int MENU_SIZE = sizeof(MENU_ITEMS)/sizeof(*MENU_ITEMS);
-const int MAX_CHAR_LENGTH = 15;
-const int MENU_X[] = {0,  5,  10,  5,  0};
-const int MENU_Y[] = {0, 11,  22, 41, 52};
 
 bool Menu::InMenu() {
   return this->inMenu;
@@ -53,12 +54,12 @@ void Menu::ProcessMenuOled() {
   CreateMenuItem(highlighted->GetTitle(),   3, true);
 
   // Item 2
-  ptr = highlighted->GetPrevious();
+  ptr = highlighted->GetPreviousVisible();
   if (ptr == NULL) {
     CreateMenuItem("", 2, false);
   } else {
     CreateMenuItem(ptr->GetTitle(), 2, false);
-    ptr = ptr->GetPrevious();
+    ptr = ptr->GetPreviousVisible();
   }
     // Item 1
   if (ptr == NULL) {
@@ -68,12 +69,12 @@ void Menu::ProcessMenuOled() {
   }
 
   // Item 4
-  ptr = highlighted->GetNext();
+  ptr = highlighted->GetNextVisible();
   if (ptr == NULL) {
     CreateMenuItem("", 4, false);
   } else {
     CreateMenuItem(ptr->GetTitle(), 4, false);
-    ptr = ptr->GetNext();
+    ptr = ptr->GetNextVisible();
   }
 
   // Item 5
diff --git a/src/menu.h b/src/menu.h
index 19ca54e..4d1e50c 100644
--- a/src/menu.h
+++ b/src/menu.h
@@ -12,6 +12,10 @@
 
 using namespace daisy;
 
+const int MAX_CHAR_LENGTH = 15;
+const int MENU_X[] = {0,  5,  10,  5,  0};
+const int MENU_Y[] = {0, 11,  22, 41, 52};
+
 class Menu {
  private:
   DaisyPatch* patch;
@@ -24,12 +28,15 @@ class Menu {
   bool inMenu = false;
 
   /*
-   * Converts a number to the related menu state.
+   * Draws a menu item on screen.
    *
-   * @param menu_state state number
-   * @return menu state
+   * @param text menu item name
+   * @param position menu items position in the menu
+   * @param highlighted state of menu items selection
    */
-  MenuState ConvertState(int menu_state);
+  void CreateMenuItem(std::string text,
+		      int position,
+		      bool highlighted);
  public:
   /*
    * Constructor for a menu system to control the state of the patch.
@@ -54,17 +61,6 @@ class Menu {
    */
   void SetInMenu(bool);
 
-  /*
-   * Draws a menu item on screen.
-   *
-   * @param text menu item name
-   * @param position menu items position in the menu
-   * @param highlighted state of menu items selection
-   */
-  void CreateMenuItem(std::string text,
-		      int position,
-		      bool highlighted);
-
   /*
    * Draws droplet information on the screen.
    */
diff --git a/src/menu_item.cpp b/src/menu_item.cpp
index 0f8b522..cda63e3 100644
--- a/src/menu_item.cpp
+++ b/src/menu_item.cpp
@@ -62,6 +62,24 @@ void MenuItem::ToggleVisibility() {
   visible = !visible;
 }
 
+void MenuItem::SetStateVisibility(MenuState m_state, bool visibility) {
+  if (this->GetState() == m_state) {
+    this->SetVisibility(visibility);
+  }
+  if (this->GetNext() != NULL) {
+    this->GetNext()->SetStateVisibility(m_state, visibility);
+  }
+}
+
+void MenuItem::SetStateTitle(MenuState m_state, std::string m_title) {
+  if (this->GetState() == m_state) {
+    this->SetTitle(m_title);
+  }
+  if (this->GetNext() != NULL) {
+    this->GetNext()->SetStateTitle(m_state, m_title);
+  }
+}
+
 MenuState MenuItem::GetState() {
   return state;
 }
diff --git a/src/menu_item.h b/src/menu_item.h
index e6ac39e..e9c00fa 100644
--- a/src/menu_item.h
+++ b/src/menu_item.h
@@ -91,11 +91,42 @@ class MenuItem {
    */
   void ToggleVisibility();
 
+  void SetStateVisibility(MenuState m_state, bool visibility);
+  void SetStateTitle(MenuState m_state, std::string m_title);
+
+  /*
+   * Returns the state of the menu item.
+   *
+   * @return state
+   */
   MenuState GetState();
 
+  /*
+   * Add menu item before other menu item.
+   *
+   * @param menu item to be added
+   */
   void AddItemBefore(MenuItem* item);
+
+  /*
+   * Add menu item after other menu item.
+   *
+   * @param menu item to be added
+   */
   void AddItemAfter(MenuItem* item);
+
+  /*
+   * Add menu item at the beginning of a a menu item list.
+   *
+   * @param menu item to be added
+   */
   void AddItemStart(MenuItem* item);
+
+  /*
+   * Add menu item at the end of a a menu item list.
+   *
+   * @param menu item to be added
+   */
   void AddItemEnd(MenuItem* item);
 };