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Diffstat (limited to 'src/qml/util/qqmlchangeset_p.h')
| -rw-r--r-- | src/qml/util/qqmlchangeset_p.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/qml/util/qqmlchangeset_p.h b/src/qml/util/qqmlchangeset_p.h new file mode 100644 index 0000000000..acafbd4eec --- /dev/null +++ b/src/qml/util/qqmlchangeset_p.h @@ -0,0 +1,167 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLCHANGESET_P_H +#define QQMLCHANGESET_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/qdebug.h> +#include <QtCore/qvector.h> +#include <QtQml/private/qtqmlglobal_p.h> + +QT_BEGIN_NAMESPACE + +class Q_QML_PRIVATE_EXPORT QQmlChangeSet +{ +public: + struct MoveKey + { + MoveKey() : moveId(-1), offset(0) {} + MoveKey(int moveId, int offset) : moveId(moveId), offset(offset) {} + int moveId; + int offset; + }; + + struct Change + { + Change() : index(0), count(0), moveId(-1) {} + Change(int index, int count, int moveId = -1, int offset = 0) + : index(index), count(count), moveId(moveId), offset(offset) {} + + int index; + int count; + int moveId; + int offset; + + bool isMove() const { return moveId >= 0; } + + MoveKey moveKey(int index) const { + return MoveKey(moveId, index - Change::index + offset); } + + int start() const { return index; } + int end() const { return index + count; } + }; + + + struct Insert : public Change + { + Insert() {} + Insert(int index, int count, int moveId = -1, int offset = 0) + : Change(index, count, moveId, offset) {} + }; + + struct Remove : public Change + { + Remove() {} + Remove(int index, int count, int moveId = -1, int offset = 0) + : Change(index, count, moveId, offset) {} + }; + + QQmlChangeSet(); + QQmlChangeSet(const QQmlChangeSet &changeSet); + ~QQmlChangeSet(); + + QQmlChangeSet &operator =(const QQmlChangeSet &changeSet); + + const QVector<Remove> &removes() const { return m_removes; } + const QVector<Insert> &inserts() const { return m_inserts; } + const QVector<Change> &changes() const { return m_changes; } + + void insert(int index, int count); + void remove(int index, int count); + void move(int from, int to, int count, int moveId); + void change(int index, int count); + + void insert(const QVector<Insert> &inserts); + void remove(const QVector<Remove> &removes, QVector<Insert> *inserts = 0); + void move(const QVector<Remove> &removes, const QVector<Insert> &inserts); + void change(const QVector<Change> &changes); + void apply(const QQmlChangeSet &changeSet); + + bool isEmpty() const { return m_removes.empty() && m_inserts.empty() && m_changes.isEmpty(); } + + void clear() + { + m_removes.clear(); + m_inserts.clear(); + m_changes.clear(); + m_difference = 0; + } + + int difference() const { return m_difference; } + +private: + void remove(QVector<Remove> *removes, QVector<Insert> *inserts); + void change(QVector<Change> *changes); + + QVector<Remove> m_removes; + QVector<Insert> m_inserts; + QVector<Change> m_changes; + int m_difference; +}; + +Q_DECLARE_TYPEINFO(QQmlChangeSet::Change, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(QQmlChangeSet::Remove, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(QQmlChangeSet::Insert, Q_PRIMITIVE_TYPE); +Q_DECLARE_TYPEINFO(QQmlChangeSet::MoveKey, Q_PRIMITIVE_TYPE); + +inline uint qHash(const QQmlChangeSet::MoveKey &key) { return qHash(qMakePair(key.moveId, key.offset)); } +inline bool operator ==(const QQmlChangeSet::MoveKey &l, const QQmlChangeSet::MoveKey &r) { + return l.moveId == r.moveId && l.offset == r.offset; } + +Q_QML_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet::Remove &remove); +Q_QML_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet::Insert &insert); +Q_QML_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet::Change &change); +Q_QML_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet &change); + +QT_END_NAMESPACE + +#endif |