WtNodeDataModel.h

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#pragma once
 
#include "WtNodeData.hpp"
#include "WtNodeStyle.h"
 
enum class NodeValidationState
{
    Valid,
    Warning,
    Error
};
 
class WtConnection;
class WtNodePainterDelegate;
 
class WtNodeDataModel
{
public:
    WtNodeDataModel();
 
    virtual ~WtNodeDataModel() = default;
 
    virtual std::string caption() const = 0;
 
    virtual std::string nodeTips() const { return "nodeTips"; }
 
    virtual std::string portTips(PortType, PortIndex) const { return "portTips"; }

    virtual bool captionVisible() const { return true; }
 
    virtual bool hotkeyEnabled() const { return true; }

    virtual std::string portCaption(PortType, PortIndex) const { return std::string(); }

    virtual bool portCaptionVisible(PortType, PortIndex) const { return false; }
 
    virtual bool allowExported() const { return true; }

    virtual std::string name() const = 0;
 
public:
    //QJsonObject save() const override;
 
public:
    virtual unsigned int nPorts(PortType portType) const = 0;
 
    virtual NodeDataType dataType(PortType portType, PortIndex portIndex) const = 0;
 
public:
    enum class ConnectionPolicy
    {
        One,
        Many,
    };
 
    virtual ConnectionPolicy portOutConnectionPolicy(PortIndex) const
    {
        return ConnectionPolicy::Many;
    }
 
    virtual ConnectionPolicy portInConnectionPolicy(PortIndex) const
    {
        return ConnectionPolicy::One;
    }
 
    WtNodeStyle const& nodeStyle() const;
 
    void setNodeStyle(WtNodeStyle const& style);
 
public:
    virtual void setInData(std::shared_ptr<WtNodeData> nodeData, PortIndex port) = 0;
 
    virtual bool tryInData(PortIndex portIndex, std::shared_ptr<WtNodeData> nodeData) { return true; }
 
    virtual std::shared_ptr<WtNodeData> outData(PortIndex port) = 0;
 
    //virtual QWidget* embeddedWidget() = 0;
 
    virtual bool resizable() const { return false; }
 
    virtual NodeValidationState validationState() const { return NodeValidationState::Valid; }
 
    virtual std::string validationMessage() const { return std::string(""); }
 
    virtual WtNodePainterDelegate* painterDelegate() const { return nullptr; }
 
public:
    virtual void inputConnectionCreated(WtConnection const&) {}
 
    virtual void inputConnectionDeleted(WtConnection const&) {}
 
    virtual void outputConnectionCreated(WtConnection const&) {}
 
    virtual void outputConnectionDeleted(WtConnection const&) {}
 
    //signal
    //void dataUpdated(PortIndex index);
 
    //void dataInvalidated(PortIndex index);
 
    //void computingStarted();
 
    //void computingFinished();
 
    //void embeddedWidgetSizeUpdated();
 
private:
    WtNodeStyle _nodeStyle;
};