#pragma once
#include "Menu.h"

class MenuComponent:IAttributable{
    friend class Menu;
    friend class MenuItemButton;
    friend class ScrollableWindowComponent;
    friend class InventoryScrollableWindowComponent;
    MenuType menuDest;
private:
    float hoverEffect=0;
    virtual bool GetHoverState(Crawler*game);
    //CALL THIS FOR A PARENT to check a child's DrawDecal validity!
    virtual bool PointWithinParent(MenuComponent*child,vi2d drawPos);
    std::pair<MenuType,std::string>memoryLeakInfo; //Used to identify memory leak hints for this component.
protected:
    std::string name="";
    geom2d::rect<float>rect;
    std::string label;
    bool border=true;
    bool draggable=false;
    bool background=true;
    bool showDefaultLabel=true;
    MenuFunc onClick;
    MenuType parentMenu=MenuType::ENUM_END;
    MenuComponent*parentComponent=nullptr;
    bool hovered=false;
    bool selectable=true;
    bool selectableViaKeyboard=true;
    bool disabled=false; //If set to true, this component will not be rendered or updated.
    bool renderInMain=true; //If set to false, this component is the responsibility of some other windowing system and won't be rendered or updated via the main window loop.
    bool valid=true; //If set to false, this would cause the component to be removed.
    virtual void Update(Crawler*game);
    virtual void Draw(Crawler*game,vf2d parentPos,bool focused);
    virtual void DrawDecal(Crawler*game,vf2d parentPos,bool focused);
    virtual bool GetHoverState(Crawler*game,MenuComponent*child);
    virtual void AfterCreate(); //Called after the creation of all menus finish.
public:
    MenuComponent(MenuType parent,geom2d::rect<float>rect,std::string label,MenuFunc onClick,bool selectable=true,bool selectableViaKeyboard=true);
    MenuComponent(MenuType parent,geom2d::rect<float>rect,std::string label,MenuType menuDest,MenuFunc onClick,bool selectable=true,bool selectableViaKeyboard=true);
    virtual ~MenuComponent();
    void _Update(Crawler*game);
    void _Draw(Crawler*game,vf2d parentPos,bool focused);
    void _DrawDecal(Crawler*game,vf2d parentPos,bool focused);
    vf2d GetPos();
    //We picked up a draggable component, we should make a copy and return it here. If a nullptr is returned here, the pickup is not allowed.
    //WARNING!!! This allocates a brand new component when successful!!! Be prepared to clear it!
    virtual MenuComponent*PickUpDraggableItem();
    //We are attempting to drop draggable onto this item. If it's not allowed, return false.
    virtual bool DropDraggableItem(MenuComponent*draggable);
    //A notification that a button outside the region has been selected. Return false if it's not allowed.
    virtual bool HandleOutsideDisabledButtonSelection(MenuComponent*disabledButton);
    //Called whenever an inventory slot gets updated, whether it's adding or removing an item.
    virtual void OnInventorySlotsUpdate(ITCategory cat);
    std::string GetLabel();
};