vtkSMPreselectionPipeline.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkSMPreselectionPipeline_h
#define vtkSMPreselectionPipeline_h

#include "vtkObject.h"
#include "vtkRemotingMiscModule.h" //needed for exports
#include "vtkWeakPointer.h"        // Weak Pointer

// Forward declarations
class vtkCallbackCommand;
class vtkSMProxy;
class vtkSMRenderViewProxy;
class vtkSMSourceProxy;
class VTKREMOTINGMISC_EXPORT vtkSMPreselectionPipeline : public vtkObject
{
public:
  vtkTypeMacro(vtkSMPreselectionPipeline, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  virtual vtkSMProxy* GetSelectionRepresentation() const;
  virtual vtkSMProxy* GetOrCreateSelectionRepresentation();
  virtual vtkSMProxy* CreateSelectionRepresentation(
    vtkSMSourceProxy* extract, vtkSMRenderViewProxy* view);
  virtual vtkSMProxy* CreateSelectionRepresentation(vtkSMSourceProxy* extract)
  {
    return this->CreateSelectionRepresentation(extract, nullptr);
  }

  virtual void Show(vtkSMSourceProxy* sourceRepresentation, vtkSMSourceProxy* selection,
    vtkSMRenderViewProxy* view);
  virtual void Hide(vtkSMRenderViewProxy* view);
  void CopyLabels(vtkSMProxy* representation);

protected:
  vtkSMPreselectionPipeline();
  ~vtkSMPreselectionPipeline() override;
  static void OnColorModified(
    vtkObject* source, unsigned long eid, void* clientdata, void* calldata);
  static void ClearCache(vtkObject* source, unsigned long eid, void* clientdata, void* calldata);
  virtual void ClearCache();
  vtkSMSourceProxy* ConnectPVExtractSelection(
    vtkSMSourceProxy* source, unsigned int sourceOutputPort, vtkSMSourceProxy* selection);

private:
  vtkSMPreselectionPipeline(const vtkSMPreselectionPipeline&) = delete;
  void operator=(const vtkSMPreselectionPipeline&) = delete;

protected:
  vtkSMSourceProxy* ExtractInteractiveSelection;
  vtkSMProxy* SelectionRepresentation;

  vtkWeakPointer<vtkSMRenderViewProxy> PreviousView;
  vtkWeakPointer<vtkSMSourceProxy> PreviousRepresentation;
  vtkCallbackCommand* ColorObserver;
  vtkCallbackCommand* ConnectionObserver;
};

#endif