message.h

#ifndef MESSAGE_H
#define MESSAGE_H

#include <string>
#include <initializer_list>
#include "core/export_handling.h"
#include "streams/stream_object.h"

class MessagePrivate;
class OutputPrivate;
class StreamWidget;

class Message : public StreamObject
{
public:
    struct Entry
    {
        std::string name;

        enum Type
        {
            Invalid,
            String,
            Int,
            Double
        } type;

        std::string s;

        // Can't use it for the string because of its non-trivial constructor/
        // destructor, but let's at least use it here.
        union {
            int i;
            double d;
        };
    };

    Message(const StreamObject &base);
    Message(std::initializer_list<SourceID> sources = {});
    virtual ~Message() = default;

    const Entry &entry(const std::string &name) const;

    const Entry &at(int index) const;

    const Entry &operator[](int index) const;

    int size(void) const;

protected:
    MessagePrivate *_this;

// Handle the displaying of the message
#if ROVIZ_BACKEND == ROVIZ_BACKEND_Dev
public:
    static StreamWidget *initWidget(OutputPrivate *out);
#endif
};

DECLARE_STREAM_OBJECT(Message)

#endif // MESSAGE_H