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/*=========================================================================

  Program:   ParaView
  Module:    vtkSMNewWidgetRepresentationProxy.h

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
// .NAME vtkSMNewWidgetRepresentationProxy - proxy for 3D widgets and
// their representations in ParaView.
// .SECTION Description
// vtkSMNewWidgetRepresentationProxy is a proxy for 3D widgets and their
// representations. It has several responsibilities.
// \li Sets up the link between the Widget and its representation on VTK side.
// \li Sets up event handlers to ensure that the representation proxy's info
// properties are updated any time the widget fires interaction events.
// \li Provides API to perform tasks typical with 3DWidgets in ParaView e.g.
// picking, placing widget on data bounds.

#ifndef vtkSMNewWidgetRepresentationProxy_h
#define vtkSMNewWidgetRepresentationProxy_h

#include "vtkPVServerManagerRenderingModule.h" //needed for exports
#include "vtkSMProxy.h"
class vtkSMViewProxy;
class vtkSMNewWidgetRepresentationObserver;
class vtkAbstractWidget;

struct vtkSMNewWidgetRepresentationInternals;

class VTKPVSERVERMANAGERRENDERING_EXPORT vtkSMNewWidgetRepresentationProxy : public vtkSMProxy
{
public:
  static vtkSMNewWidgetRepresentationProxy* New();
  vtkTypeMacro(vtkSMNewWidgetRepresentationProxy, vtkSMProxy);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Get the widget for the representation.
  vtkGetObjectMacro(Widget, vtkAbstractWidget);

  // Description:
  // Get Representation Proxy.
  vtkGetObjectMacro(RepresentationProxy, vtkSMProxy);

  // Description:
  // Called to link properties from a Widget to \c controlledProxy i.e. a
  // proxy whose properties are being manipulated using this Widget.
  // Currently, we only support linking with one controlled proxy at a time. One
  // must call UnlinkProperties() before one can call this method on another
  // controlledProxy. The \c controlledPropertyGroup is used to determine the
  // mapping between this widget properties and controlledProxy properties.
  bool LinkProperties(vtkSMProxy* controlledProxy, vtkSMPropertyGroup* controlledPropertyGroup);
  bool UnlinkProperties(vtkSMProxy* controlledProxy);

protected:
  vtkSMNewWidgetRepresentationProxy();
  ~vtkSMNewWidgetRepresentationProxy();

  // Description:
  // Overridden from vtkSMProxy to call BeginCreateVTKObjects() and
  // EndCreateVTKObjects().
  virtual void CreateVTKObjects();

  vtkSMProxy* RepresentationProxy;
  vtkSMProxy* WidgetProxy;
  vtkAbstractWidget* Widget;
  vtkSMNewWidgetRepresentationObserver* Observer;
  vtkSMNewWidgetRepresentationInternals* Internal;

  friend class vtkSMNewWidgetRepresentationObserver;

  // Description:
  // Called every time the user interacts with the widget.
  virtual void ExecuteEvent(unsigned long event);

  // Description:
  // Called everytime a controlled property's unchecked values change.
  void ProcessLinkedPropertyEvent(vtkSMProperty* controlledProperty, unsigned long event);
private:

  vtkSMNewWidgetRepresentationProxy(const vtkSMNewWidgetRepresentationProxy&); // Not implemented
  void operator=(const vtkSMNewWidgetRepresentationProxy&); // Not implemented

};

#endif