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

  Program:   ParaView
  Module:    vtkPVPointWidget.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$

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 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

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 * Neither the name of Kitware nor the names of any contributors may be used
   to endorse or promote products derived from this software without specific 
   prior written permission.

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   misrepresented as being the original software.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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=========================================================================*/
// .NAME vtkPVPointWidget - A widget to manipulate an implicit plane.
// .SECTION Description
// This widget creates and manages its own vtkPlane on each process.
// I could not descide whether to include the bounds display or not. 
// (I did not.) 


#ifndef __vtkPVPointWidget_h
#define __vtkPVPointWidget_h

#include "vtkPV3DWidget.h"

class vtkPVSource;
class vtkKWEntry;
class vtkKWPushButton;
class vtkKWWidget;
class vtkKWLabel;

class VTK_EXPORT vtkPVPointWidget : public vtkPV3DWidget
{
public:
  static vtkPVPointWidget* New();
  vtkTypeRevisionMacro(vtkPVPointWidget, vtkPV3DWidget);

  void PrintSelf(ostream& os, vtkIndent indent);
    
  // Description:
  // Callback that set the center to the middle of the bounds.
  void PositionResetCallback();

  // Description:
  // Called when the PVSources reset button is called.
  virtual void Reset();
    
  // Description:
  // Called when the PVSources accept button is called.
  // It can also puts an entry in the trace file.
  virtual void Accept();

  // Description:
  // For saving the widget into a VTK tcl script.
  void SaveInTclScript(ofstream *file);

  // Description:
  // This method sets the input to the 3D widget and places the widget.
  virtual void ActualPlaceWidget();

//BTX
  // Description:
  // Creates and returns a copy of this widget. It will create
  // a new instance of the same type as the current object
  // using NewInstance() and then copy some necessary state 
  // parameters.
  vtkPVPointWidget* ClonePrototype(vtkPVSource* pvSource,
                                 vtkArrayMap<vtkPVWidget*, vtkPVWidget*>* map);
//ETX

  void SetPosition();
  void SetPosition(float,float,float);
  void GetPosition(float pt[3]);

protected:
  vtkPVPointWidget();
  ~vtkPVPointWidget();

  // Description:
  // Call creation on the child.
  virtual void ChildCreate(vtkPVApplication*);

  // Description:
  // Execute event of the 3D Widget.
  virtual void ExecuteEvent(vtkObject*, unsigned long, void*);

  void UpdateVTKObject();

  vtkKWEntry *PositionEntry[3];
  vtkKWPushButton *PositionResetButton;

  vtkKWLabel* Labels[2];
  vtkKWLabel* CoordinateLabel[3];

  int ReadXMLAttributes(vtkPVXMLElement* element,
                        vtkPVXMLPackageParser* parser);

private:
  vtkPVPointWidget(const vtkPVPointWidget&); // Not implemented
  void operator=(const vtkPVPointWidget&); // Not implemented
};

#endif
