util/src/gui/itemviews/qtreewidgetitemiterator_p.h
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the QtGui module of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
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    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
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    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
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    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #ifndef QTREEWIDGETITEMITERATOR_P_H
       
    43 #define QTREEWIDGETITEMITERATOR_P_H
       
    44 
       
    45 //
       
    46 //  W A R N I N G
       
    47 //  -------------
       
    48 //
       
    49 // This file is not part of the Qt API.  It exists purely as an
       
    50 // implementation detail.  This header file may change from version to
       
    51 // version without notice, or even be removed.
       
    52 //
       
    53 // We mean it.
       
    54 //
       
    55 
       
    56 #include <QtCore/qstack.h>
       
    57 
       
    58 #ifndef QT_NO_TREEWIDGET
       
    59 #include "qtreewidgetitemiterator.h"
       
    60 
       
    61 QT_BEGIN_NAMESPACE
       
    62 
       
    63 class QTreeModel;
       
    64 class QTreeWidgetItem;
       
    65 
       
    66 class QTreeWidgetItemIteratorPrivate {
       
    67     Q_DECLARE_PUBLIC(QTreeWidgetItemIterator)
       
    68 public:
       
    69     QTreeWidgetItemIteratorPrivate(QTreeWidgetItemIterator *q, QTreeModel *model)
       
    70         : m_currentIndex(0), m_model(model), q_ptr(q)
       
    71     {
       
    72 
       
    73     }
       
    74 
       
    75     QTreeWidgetItemIteratorPrivate(const QTreeWidgetItemIteratorPrivate& other)
       
    76         : m_currentIndex(other.m_currentIndex), m_model(other.m_model),
       
    77           m_parentIndex(other.m_parentIndex), q_ptr(other.q_ptr)
       
    78     {
       
    79 
       
    80     }
       
    81 
       
    82     QTreeWidgetItemIteratorPrivate &operator=(const QTreeWidgetItemIteratorPrivate& other)
       
    83     {
       
    84         m_currentIndex = other.m_currentIndex;
       
    85         m_parentIndex = other.m_parentIndex;
       
    86         m_model = other.m_model;
       
    87         return (*this);
       
    88     }
       
    89 
       
    90     ~QTreeWidgetItemIteratorPrivate()
       
    91     {
       
    92     }
       
    93 
       
    94     QTreeWidgetItem* nextSibling(const QTreeWidgetItem* item) const;
       
    95     void ensureValidIterator(const QTreeWidgetItem *itemToBeRemoved);
       
    96 
       
    97     QTreeWidgetItem *next(const QTreeWidgetItem *current);
       
    98     QTreeWidgetItem *previous(const QTreeWidgetItem *current);
       
    99 private:
       
   100     int             m_currentIndex;
       
   101     QTreeModel     *m_model;        // This iterator class should not have ownership of the model.
       
   102     QStack<int>     m_parentIndex;
       
   103     QTreeWidgetItemIterator *q_ptr;
       
   104 };
       
   105 
       
   106 QT_END_NAMESPACE
       
   107 
       
   108 #endif // QT_NO_TREEWIDGET
       
   109 
       
   110 #endif //QTREEWIDGETITEMITERATOR_P_H