Base.h

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#pragma once
 
#include <stdexcept>
 
 
namespace Gorgon { namespace UI {
    
    class WidgetContainer;
    
    namespace Organizers {
        class Base {
        public:
            
            virtual ~Base() { }
            
            void AttachTo(WidgetContainer &container);
            
            void RemoveFrom();
            
 
            bool IsAttached() const {
                return attachedto != nullptr;
            }
            
            WidgetContainer &GetAttached() const {
                if(!attachedto)
                    throw std::runtime_error("Organizer is not attached to any container");
                
                return *attachedto;
            }
            
            void Reorganize();
            
        protected:
            virtual void attachmentchanged() { }
            
            virtual void reorganize() = 0;
            
        private:
            WidgetContainer *attachedto = nullptr;
            bool organizing = false;
        };
    }
} }