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

  Module:    $RCSfile: vtkKWPopupButton.h,v $

  Copyright (c) Kitware, Inc.
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm 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 vtkKWPopupButton - a button that triggers a popup
// .SECTION Description
// The vtkKWPopupButton class creates a push button that
// will popup a window. User widgets should be inserted inside
// the PopupFrame ivar.

#ifndef __vtkKWPopupButton_h
#define __vtkKWPopupButton_h

#include "vtkKWPushButton.h"

class vtkKWFrame;
class vtkKWTopLevel;

class KWWidgets_EXPORT vtkKWPopupButton : public vtkKWPushButton
{
public:
  static vtkKWPopupButton* New();
  vtkTypeRevisionMacro(vtkKWPopupButton, vtkKWPushButton);
  void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Access to sub-widgets.
  // The PopupFrame widget is the place to put your own sub-widgets.
  vtkGetObjectMacro(PopupTopLevel, vtkKWTopLevel);
  vtkGetObjectMacro(PopupFrame, vtkKWFrame);
  vtkGetObjectMacro(PopupCloseButton, vtkKWPushButton);

  // Description:
  // Set the popup title.
  virtual void SetPopupTitle(const char* title);

  // Description:
  // Update the "enable" state of the object and its internal parts.
  // Depending on different Ivars (this->Enabled, the application's 
  // Limited Edition Mode, etc.), the "enable" state of the object is updated
  // and propagated to its internal parts/subwidgets. This will, for example,
  // enable/disable parts of the widget UI, enable/disable the visibility
  // of 3D widgets, etc.
  virtual void UpdateEnableState();

  // Description:
  // Specifies a command to associate with the widget. This command is 
  // typically invoked when the popup is withdrawn.
  // The 'object' argument is the object that will have the method called on
  // it. The 'method' argument is the name of the method to be called and any
  // arguments in string form. If the object is NULL, the method is still
  // evaluated as a simple command. 
  virtual void SetWithdrawCommand(vtkObject *object, const char* command);

  // Description:
  // Callbacks. Internal, do not use.
  virtual void DisplayPopupCallback();
  virtual void WithdrawPopupCallback();

protected:
  vtkKWPopupButton();
  ~vtkKWPopupButton();

  // Description:
  // Create the widget.
  virtual void CreateWidget();

  vtkKWTopLevel   *PopupTopLevel;
  vtkKWFrame      *PopupFrame;
  vtkKWPushButton *PopupCloseButton;

  char* WithdrawCommand;
  virtual void InvokeWithdrawCommand();

  virtual void Bind();
  virtual void UnBind();

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

#endif