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

  Library:   CTK

  Copyright (c) Kitware Inc.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.commontk.org/LICENSE

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

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

#ifndef __ctkCheckableComboBox_h
#define __ctkCheckableComboBox_h

// Qt includes
#include <QComboBox>

// CTK includes
#include "ctkWidgetsExport.h"

class ctkCheckableModelHelper;
class ctkCheckableComboBoxPrivate;

/// Description
/// ctkCheckableComboBox is a QComboBox that allow its items to be checkable
class CTK_WIDGETS_EXPORT ctkCheckableComboBox : public QComboBox
{
  Q_OBJECT

public:
  ctkCheckableComboBox(QWidget *parent = 0);
  virtual ~ctkCheckableComboBox();
  
  /// Use setCheckableModel instead of setModel()
  QAbstractItemModel* checkableModel()const;
  void setCheckableModel(QAbstractItemModel *model);
  
  ctkCheckableModelHelper* checkableModelHelper()const;
  
  QModelIndexList checkedIndexes()const;
  bool allChecked()const;
  bool noneChecked()const;

  bool eventFilter(QObject *o, QEvent *e);
  
signals:
  void checkedIndexesChanged();

protected slots:
  void onDataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight);

protected:
  /// Reimplemented for internal reasons
  virtual void paintEvent(QPaintEvent*);

protected:
  QScopedPointer<ctkCheckableComboBoxPrivate> d_ptr;

private:
  Q_DECLARE_PRIVATE(ctkCheckableComboBox);
  Q_DISABLE_COPY(ctkCheckableComboBox);
};

#endif