WidgetHandler.h

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#pragma once
 
#include <functional>
 
#include <ArmarXCore/util/CPPUtility/cnull.h>
 
#include <ArmarXGui/interface/RemoteGuiInterface.h>
 
class QWidget;
class QObject;
class QString;
 
namespace armarx::RemoteGui
{
 
    std::string toUtf8(QString const& qstring);
    QString toQString(std::string const& string);
 
    using QWidgetPtr = QWidget*;
    using CreateWidgetCallback = std::function<QWidgetPtr(WidgetPtr const&)>;
 
    struct WidgetHandler
    {
        virtual ~WidgetHandler() = default;
 
        virtual bool isValid(Widget const& desc, std::ostream& out = cnull) const = 0;
 
        virtual QWidget* createWidget(Widget const& desc,
                                      ValueVariant const& initialValue,
                                      CreateWidgetCallback const& createChild,
                                      const QObject* stateChangeReceiver,
                                      const char* stateChangeSlot) const = 0;
 
        virtual void
        updateGui(Widget const& desc, QWidget* widget, ValueVariant const& value) const = 0;
 
        virtual RemoteGui::ValueVariant handleGuiChange(Widget const& desc,
                                                        QWidget* widget) const = 0;
 
        virtual std::string getHandlerT() const = 0;
    };
 
} // namespace armarx::RemoteGui