//=========================================================================
//  Copyright (c) Kitware, Inc.
//  All rights reserved.
//  See LICENSE.txt 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 qtAttributeRefItem - UI component for attribute RefItem
// .SECTION Description
// .SECTION See Also
// qtItem

#ifndef __smtk_extension_qtAttributeRefItem_h
#define __smtk_extension_qtAttributeRefItem_h

#include "smtk/extension/qt/Exports.h"
#include "smtk/extension/qt/qtItem.h"
#include <QComboBox>

class qtAttributeRefItemInternals;

namespace smtk
{
namespace extension
{
class qtBaseView;
class qtAttribute;

class SMTKQTEXT_EXPORT qtAttributeRefItem : public qtItem
{
  Q_OBJECT

public:
  qtAttributeRefItem(smtk::attribute::ItemPtr, QWidget* parent, qtBaseView* view,
    Qt::Orientation enVectorItemOrient = Qt::Horizontal);
  virtual ~qtAttributeRefItem();

  virtual void setLabelVisible(bool);
  // this will turn on/off the Edit button.
  // Also, if the turning off, the Attribute widget will be turned off too
  virtual void setAttributeEditorVisible(bool);
  // turn on/off the attribute widget and the Collapse button.
  virtual void setAttributeWidgetVisible(bool);

public slots:
  void onInputValueChanged();
  void onToggleAttributeWidgetVisibility();
  void onLaunchAttributeView();

protected slots:
  virtual void updateItemData();
  virtual void setOutputOptional(int);

protected:
  virtual void createWidget();
  virtual void refreshUI(QComboBox* combo);
  virtual void updateAttWidgetState(qtAttribute* qa);
  virtual void setAttributesVisible(bool visible);

private:
  qtAttributeRefItemInternals* Internals;

}; // class

//A sublcass of QComboBox to refresh the list on popup
class SMTKQTEXT_EXPORT qtAttRefCombo : public QComboBox
{
  Q_OBJECT
public:
  qtAttRefCombo(smtk::attribute::ItemPtr, QWidget* parent);
  virtual void showPopup();
  //virtual QSize sizeHint() const;
private:
  smtk::attribute::WeakItemPtr m_RefItem;
};

}; // namespace attribute
}; // namespace smtk

#endif
