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Diffstat (limited to 'src/declarative/qml/ftw/qfieldlist_p.h')
| -rw-r--r-- | src/declarative/qml/ftw/qfieldlist_p.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/declarative/qml/ftw/qfieldlist_p.h b/src/declarative/qml/ftw/qfieldlist_p.h new file mode 100644 index 0000000000..65b1d4b4ee --- /dev/null +++ b/src/declarative/qml/ftw/qfieldlist_p.h @@ -0,0 +1,210 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QFIELDLIST_P_H +#define QFIELDLIST_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qglobal.h> + +template<class N, N *N::*nextMember> +class QFieldList +{ +public: + inline QFieldList(); + inline N *first() const; + inline void append(N *); + inline void prepend(N *); + + inline bool isEmpty() const; + inline bool isOne() const; + inline bool isMany() const; + inline int count() const; + + inline void append(QFieldList<N, nextMember> &); + inline void prepend(QFieldList<N, nextMember> &); + inline void insertAfter(N *, QFieldList<N, nextMember> &); + + static inline N *next(N *v); + +private: + N *_first; + N *_last; + int _count; +}; + +template<class N, N *N::*nextMember> +QFieldList<N, nextMember>::QFieldList() +: _first(0), _last(0), _count(0) +{ +} + +template<class N, N *N::*nextMember> +N *QFieldList<N, nextMember>::first() const +{ + return _first; +} + +template<class N, N *N::*nextMember> +void QFieldList<N, nextMember>::append(N *v) +{ + Q_ASSERT(v->*nextMember == 0); + if (isEmpty()) { + _first = v; + _last = v; + } else { + _last->*nextMember = v; + _last = v; + } + ++_count; +} + +template<class N, N *N::*nextMember> +void QFieldList<N, nextMember>::prepend(N *v) +{ + Q_ASSERT(v->*nextMember == 0); + if (isEmpty()) { + _first = v; + _last = v; + } else { + v->*nextMember = _first; + _first = v; + } + ++_count; +} + +template<class N, N *N::*nextMember> +bool QFieldList<N, nextMember>::isEmpty() const +{ + return _count == 0; +} + +template<class N, N *N::*nextMember> +bool QFieldList<N, nextMember>::isOne() const +{ + return _count == 1; +} + +template<class N, N *N::*nextMember> +bool QFieldList<N, nextMember>::isMany() const +{ + return _count > 1; +} + +template<class N, N *N::*nextMember> +int QFieldList<N, nextMember>::count() const +{ + return _count; +} + +template<class N, N *N::*nextMember> +N *QFieldList<N, nextMember>::next(N *v) +{ + Q_ASSERT(v); + return v->*nextMember; +} + +template<class N, N *N::*nextMember> +void QFieldList<N, nextMember>::append(QFieldList<N, nextMember> &o) +{ + if (!o.isEmpty()) { + if (isEmpty()) { + _first = o._first; + _last = o._last; + _count = o._count; + } else { + _last->*nextMember = o._first; + _last = o._last; + _count += o._count; + } + o._first = o._last = 0; o._count = 0; + } +} + +template<class N, N *N::*nextMember> +void QFieldList<N, nextMember>::prepend(QFieldList<N, nextMember> &o) +{ + if (!o.isEmpty()) { + if (isEmpty()) { + _first = o._first; + _last = o._last; + _count = o._count; + } else { + o._last->*nextMember = _first; + _first = o._first; + _count += o._count; + } + o._first = o._last = 0; o._count = 0; + } +} + +template<class N, N *N::*nextMember> +void QFieldList<N, nextMember>::insertAfter(N *after, QFieldList<N, nextMember> &o) +{ + if (after == 0) { + prepend(o); + } else if (after == _last) { + append(o); + } else if (!o.isEmpty()) { + if (isEmpty()) { + _first = o._first; + _last = o._last; + _count = o._count; + } else { + o._last->*nextMember = after->*nextMember; + after->*nextMember = o._first; + _count += o._count; + } + o._first = o._last = 0; o._count = 0; + } +} + +#endif // QFIELDLIST_P_H |