Layer.h

#pragma once
#include "AL/usdmaya/Common.h"
#include "AL/maya/NodeHelper.h"
#include "pxr/usd/usd/stage.h"

#include "maya/MPxLocatorNode.h"

#include <map>
#include <set>

namespace AL {
namespace usdmaya {
namespace nodes {


//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
class Layer
  : public MPxNode,
    public maya::NodeHelper
{
public:

  inline Layer()
    : MPxNode(), NodeHelper(), m_handle(), m_shape(0) {}

  void init(ProxyShape* shape, SdfLayerHandle handle);

  inline SdfLayerHandle getHandle()
    { return m_handle; }

  static MString toMayaNodeName(std::string name);

  //--------------------------------------------------------------------------------------------------------------------
  //--------------------------------------------------------------------------------------------------------------------

  std::vector<Layer*> getSubLayers();

  std::vector<Layer*> getChildLayers();

  void buildSubLayers(MDGModifier* pmodifier = 0);

  void addSubLayer(Layer* subLayer, MDGModifier* pmodifier = 0);

  bool removeSubLayer(Layer* subLayer);

  Layer* getParentLayer();

  MPlug parentLayerPlug();

  Layer* findLayer(SdfLayerHandle handle);

  //--------------------------------------------------------------------------------------------------------------------
  //--------------------------------------------------------------------------------------------------------------------

  bool hasBeenTheEditTarget() const;

  void setHasBeenTheEditTarget(bool value);

  void setLayerAndClearAttribute(SdfLayerHandle handle);

  void populateSerialisationAttributes();

  //--------------------------------------------------------------------------------------------------------------------
  //--------------------------------------------------------------------------------------------------------------------
  AL_MAYA_DECLARE_NODE();

  //--------------------------------------------------------------------------------------------------------------------
  //--------------------------------------------------------------------------------------------------------------------

  AL_DECL_ATTRIBUTE(comment);
  AL_DECL_ATTRIBUTE(defaultPrim);
  AL_DECL_ATTRIBUTE(documentation);
  AL_DECL_ATTRIBUTE(startTime);
  AL_DECL_ATTRIBUTE(endTime);
  AL_DECL_ATTRIBUTE(timeCodesPerSecond);
  AL_DECL_ATTRIBUTE(framePrecision);
  AL_DECL_ATTRIBUTE(owner);
  AL_DECL_ATTRIBUTE(sessionOwner);
  AL_DECL_ATTRIBUTE(permissionToEdit);
  AL_DECL_ATTRIBUTE(permissionToSave);
  AL_DECL_ATTRIBUTE(proxyShape);
  AL_DECL_ATTRIBUTE(subLayers);
  AL_DECL_ATTRIBUTE(childLayers);
  AL_DECL_ATTRIBUTE(parentLayer);

  // read only identification
  AL_DECL_ATTRIBUTE(displayName);
  AL_DECL_ATTRIBUTE(realPath);
  AL_DECL_ATTRIBUTE(fileExtension);
  AL_DECL_ATTRIBUTE(version);
  AL_DECL_ATTRIBUTE(repositoryPath);
  AL_DECL_ATTRIBUTE(assetName);

  // attribute to store the serialised layer (used for file IO only)
  AL_DECL_ATTRIBUTE(serialized);
  AL_DECL_ATTRIBUTE(nameOnLoad);
  AL_DECL_ATTRIBUTE(hasBeenEditTarget);

private:
  SdfLayerHandle m_handle; 
  ProxyShape* m_shape; 

  //--------------------------------------------------------------------------------------------------------------------
  //--------------------------------------------------------------------------------------------------------------------

  void postConstructor() override;
  bool getInternalValueInContext(const MPlug& plug, MDataHandle& dataHandle, MDGContext& ctx) override;
  bool setInternalValueInContext(const MPlug& plug, const MDataHandle& dataHandle, MDGContext& ctx) override;

















































};

//----------------------------------------------------------------------------------------------------------------------
} // nodes
} // usdmaya
} // AL
//----------------------------------------------------------------------------------------------------------------------