bwidgets/inc/basic_widgets/w/feat/keyboard_handler.hpp

#ifndef BWIDGETS_KEYBOARD_HANDLER
#define BWIDGETS_KEYBOARD_HANDLER

#include <basic_widgets/w/feat/focus_handler.hpp>

struct SDL_KeyboardEvent;
struct SDL_TextInputEvent;

namespace bwidgets
{
    class KeyboardHandler : public virtual FocusHandler
    {
    protected:
        virtual void _handle_key(const SDL_KeyboardEvent&)         = 0;
        virtual void _handle_text_input(const SDL_TextInputEvent&) = 0;

    public:
        using FocusHandler::FocusHandler;

        KeyboardHandler(const KeyboardHandler&) = delete;
        KeyboardHandler(KeyboardHandler&&)      = delete;
        ~KeyboardHandler() override             = default;
        auto operator=(const KeyboardHandler&) = delete;
        auto operator=(KeyboardHandler&&) = delete;

        virtual auto handle_keyboard(const SDL_KeyboardEvent& ev)
          -> KeyboardHandler* final
        {
            if (_has_focus) _handle_key(ev);
            return this;
        }

        virtual auto handle_keyboard(const SDL_TextInputEvent& ev)
          -> KeyboardHandler* final
        {
            if (_has_focus) _handle_text_input(ev);
            return this;
        }
    };
}

#endif