prompt_event_args.h

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#pragma once
#include "prompt.h"
#include "../../any.h"
#include "../../optional.h"
#include "../../event_args.h"
#include "../../system_exception.h"
#include <functional>

namespace xtd {
  namespace speech {
    namespace synthesis {
      class speech_synthesizer;
      
      class prompt_event_args : public xtd::event_args {
        friend class speech_synthesizer;
      public:
        prompt_event_args(const prompt_event_args&) = default;
        prompt_event_args(prompt_event_args&&) = default;
        prompt_event_args& operator =(const prompt_event_args&) = default;
        
        bool cancelled() const noexcept {return cancelled_;}
        
        std::optional<std::reference_wrapper<const xtd::system_exception>> error() const noexcept {return error_ ? std::optional<std::reference_wrapper<const xtd::system_exception>>(*error_) : std::nullopt; }
        
        const xtd::speech::synthesis::prompt& prompt() const noexcept {return *prompt_;}
        
        std::any user_state() const noexcept {return user_state_;}
        
      private:
        prompt_event_args(bool cancelled, const xtd::system_exception* error, xtd::speech::synthesis::prompt* prompt, std::any user_state) : cancelled_(cancelled), error_(error), prompt_(prompt), user_state_(user_state) {}
        prompt_event_args(bool cancelled, const xtd::system_exception* error, xtd::speech::synthesis::prompt* prompt) : cancelled_(cancelled), error_(error), prompt_(prompt) {}
        
        bool cancelled_ = false;
        const xtd::system_exception* error_ = nullptr;
        xtd::speech::synthesis::prompt* prompt_ = nullptr;
        std::any user_state_;
      };
    }
  }
}