component.h

#ifndef OE_GUI_COMPONENT_H
#define OE_GUI_COMPONENT_H
 
#include <glm/vec2.hpp>
#include "manager.h"
 
struct nk_context;
struct nk_font;
 
namespace oe::gui
{
    namespace component
    {
        class Row;
    }
 
    class Component;
 
    class Component
    {
        public:
            Component(Manager* manager = nullptr);
 
            virtual ~Component() {}

            template <typename T>
            Component* addChild(T* child)
            {
                assert(child);
 
                _children.push_back(child);
                child->_parent = this;
 
                return this;
            }

            template <typename T>
            Component* addSibling(T* component)
            {
                _parent->addChild(component);
 
                return this;
            }

            template <typename T, typename... Args>
            T* createChild(Args&&... args)
            {
                T* component = _manager->createComponent<T>(std::forward<Args>(args)...);
                addChild(component);
 
                component->_font = _font;
 
                return component;
            }

            template <typename T, typename... Args>
            T& createSibling(Args&&... args)
            {
                T& component = _manager->createComponent<T>(std::forward<Args>(args)...);
                _parent->addChild(component);
 
                return component;
            }
 
            template <typename T>
            T* getParent()
            {
                return (T*)_parent;
            }

            template <typename... Args>
            component::Row* createRow(const float& height, const int& cols = 0)
            {
                return createChild<component::Row>(height, cols);
            }

            Component* setFont(const std::string& font_name);

            Component* setManager(Manager* manager);

            void generateChildren();
 
            virtual void generate() = 0;
 
        protected:
            gui_id_t _id = 0;
 
            Manager* _manager;
            nk_context* _context;
            nk_font* _font = nullptr;
            Component* _parent;
            std::vector<Component*> _children;
 
            friend class Manager;
    };
}
 
#include "component/all.h" // IWYU pragma: keep
 
#endif