Refactor and enhance Keyboard widget

Updated the Keyboard widget with various improvements including the addition of placeholder text, improved key detection, and changes to color and layout. Furthermore, old methods have been refactored to make them more efficient and maintainable. This commit also includes changes in lua_gui.cpp, lua_gui.hpp, Keyboard.cpp, and Keyboard.hpp files.

lib/gui/src/elements/Keyboard.hpp

@@ -8,6 +8,7 @@
 #include "../ElementBase.hpp"
 #include "Box.hpp"
 #include "Image.hpp"
+#include "Label.hpp"
 
 namespace gui::elements
 {
@@ -18,21 +19,32 @@ namespace gui::elements
         ~Keyboard() override;
 
         void render() override;
-        void onReleased() override;
+        void widgetUpdate() override;
 
         /**
          * Returns the content of the keyboard's input AND CLEARS IT.
          * @return the content of the keyboard's input
          */
         std::string getText();
 
-        bool quitting() {return quit;}
+        /**
+         * @deprecated Please use "hasExitKeyBeenPressed()"
+         */
+        [[nodiscard]] bool quitting() const {return m_exit;}
+
+        [[nodiscard]] bool hasExitKeyBeenPressed() const;
+
+        void setPlaceholder(const std::string& placeholder);
 
     private:
         std::string m_buffer;
-        bool quit = false;
+        std::string m_placeholder;
+
+        Label* m_label;
 
-        char **m_currentLayout;
+        bool m_exit = false;
+
+        uint8_t m_currentLayout;
 
         char **m_layoutLowercase;
         char **m_layoutUppercase;
@@ -43,28 +55,38 @@ namespace gui::elements
         Image* m_capsIcon0;
         Image* m_capsIcon1;
         Image* m_capsIcon2;
-
         Image* m_backspaceIcon;
+        Image* m_layoutIcon0;
+        Image* m_layoutIcon1;
+        Image* m_exitIcon;
+        Image* m_confirmIcon;
 
         Box* m_capsBox;
         Box* m_layoutBox;
         Box* m_backspaceBox;
         Box* m_exitBox;
+        Box* m_confirmBox;
+
+        void drawKeys() const;
+        void drawKeyRow(int16_t y, uint8_t count, const char* keys) const;
+        void drawKey(int16_t x, int16_t y, uint16_t w, char key) const;
 
-        void drawKeys();
-        void drawKeyRow(int16_t y, uint8_t count, char* keys);
-        void drawKey(int16_t x, int16_t y, uint16_t w, char key);
+        void drawLastRow(int16_t x, int16_t y) const;
 
-        void drawLastRow(int16_t x, int16_t y);
+        char getKey(int16_t x, int16_t y) const;
 
-        char getKey(int16_t x, int16_t y);
-        uint8_t getKeyCol(int16_t x, uint8_t keyCount);
+        static uint8_t getKeyCol(int16_t x, uint8_t keyCount);
 
         void processKey(char key);
 
-        void drawInputBox();
+        void drawInputBox() const;
 
         void markDirty();
+
+        void updateCapsIcon() const;
+        void updateLayoutIcon() const;
+
+        char** getLayoutCharMap() const;
     };
 } // gui::elements
 

lib/lua/src/lua_gui.cpp

@@ -154,14 +154,14 @@ void LuaGui::update()
     }
 }
 
-std::string LuaGui::keyboard(std::string placeholder)
+std::string LuaGui::keyboard(const std::string& placeholder)
 {
     gui::elements::Window win;
 
     graphics::setScreenOrientation(graphics::LANDSCAPE);
-    Keyboard key;
-
 
+    Keyboard key;
+    key.setPlaceholder(placeholder);
 
     while (!hardware::getHomeButton() && !key.quitting())
     {

lib/lua/src/lua_gui.hpp

@@ -34,7 +34,7 @@ class LuaGui
     LuaRadio* radio(LuaWidget* parent, int x, int y);
     LuaWindow* window();
 
-    std::string keyboard(std::string placeholder);
+    std::string keyboard(const std::string& placeholder);
 
     void del(LuaWidget* widget);