Screen.h

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#pragma once 

#include "Page.h"

class Screen
{
        //Logger* logger;
        //D3D10_VIEWPORT viewport;
        //DeviceObject* pDevice;
        //ID3DX10Font* pFont = nullptr;
        //ID3D10RasterizerState* state = nullptr;
        int lastPage = -1;
        HRESULT hr = 0;
        Bus* bus;

public:
        /*
        D3DXMATRIX matProjection;
        D3DXMATRIX matView;
        bool initialized = false;*/
        UINT currentPage = 0; 

        // config items
        std::string name;
        std::vector<Page> pages;

        int width = 0;
        int height = 0;
        int x = 0;
        int y = 0;
        RECT rect = RECT();

        void Render()
        {
                if (currentPage >= pages.size())
                        throw std::exception("Tried to render a current page that is outside of the pages collection!");
                pages.at(currentPage).Render();
        }

        ~Screen()
        {
                pages.clear();
        }

        bool HandleKeyPress(short key, bool shift)
        {
                if (currentPage >= pages.size())
                        throw std::exception("Tried to handle keypress for current page that is outside of the pages collection!");
                return pages.at(currentPage).HandleKeyPress(key, shift);
        }

        void FrameMove(float fElapsed)
        {
                if (currentPage >= pages.size())
                        throw std::exception("Tried to frameMove a current page that is outside of the pages collection!");
                pages.at(currentPage).FrameMove(fElapsed);
        }

        bool ChangePage(const std::string& pageName)
        {
                for (UINT i = 0; i < pages.size(); i++)
                {
                        if (pages.at(i).name == pageName)
                        {
                                ChangePage(i);
                                return true;
                        }
                }
                return false;
        }

        void OnPageChange(bool sendUpdate = true)
        {
                pages.at(currentPage).OnPageChanged();

                if (!sendUpdate)
                        return;
                
                Command command;
                command.name = "UpdateMfdPage";
                command.ivalues[0] = currentPage;
                command.ivalues[1] = lastPage;
                bus->commandStream.emplace_back(command);
        }
        
        void ChangePage(int i)
        {
                if (currentPage == i) 
                        return; // no change

                if (i < 0 || i >= static_cast<int>(pages.size()))
                        throw std::exception("Tried to ChangePage using a current page that is outside of the pages collection!");

                lastPage = currentPage;
                currentPage = i;
                
                OnPageChange(false);
        }

        void RestorePage()
        {
                if (lastPage != -1)
                {
                        currentPage = lastPage;
                        lastPage = -1;
                        if (currentPage < 0 || currentPage >= pages.size())
                                throw std::exception("Tried to RestorePage on a current page that is outside of the pages collection!");
                        OnPageChange();
                }
        }

        Screen(Bus* prmBus)
        {
                bus = prmBus;
        }
};