FileDialog.h

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#pragma once
 
#include <string>
#include <vector>
 
namespace Elevate
{
    class FileDialogImpl
    {
    public:
        FileDialogImpl() = default;
        virtual ~FileDialogImpl() = default;
 
        virtual void OpenFile(const std::string& title, const std::string& defaultPathOrFile,
            const std::vector<std::string>& filters, const std::string& filterDescription, bool allowMultiple) = 0;
 
        virtual void SaveFile(const std::string& title, const std::string& defaultPathOrFile,
            const std::vector<std::string>& filters, const std::string& filterDescription) = 0;
 
        virtual void SelectFolder(const std::string& title, const std::string& defaultPath) = 0;
 
        virtual bool DisplayAndGetResult(std::string& outPath);
 
        bool HasResult();
        std::string ConsumeResult();
 
    protected:
        void SetResult(const std::string& result);
 
    private:
        bool m_hasResult = false;
        std::string m_result = "";
    };
 
    class FileDialog
    {
    public:
        static std::string RequestOpenFile(const std::string& title, const std::string& defaultPathOrFile,
            const std::vector<std::string>& filters, const std::string& filterDescription, bool allowMultiple);
 
        static std::string RequestSaveFile(const std::string& title, const std::string& defaultPathOrFile,
            const std::vector<std::string>& filters, const std::string& filterDescription);
 
        static std::string RequestSelectFolder(const std::string& title, const std::string& defaultPath);
 
        static bool DisplayAndGetResult(std::string& outPath);
    private:
        static bool ValidateImpl();
 
        static FileDialogImpl* s_impl;
    };
}