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| |
| #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 <QtQmlModels/private/qtqmlmodelsglobal_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class Q_QMLMODELS_PRIVATE_EXPORT QQmlChangeSet |
| { |
| public: |
| struct MoveKey |
| { |
| MoveKey() {} |
| MoveKey(int moveId, int offset) : moveId(moveId), offset(offset) {} |
| int moveId = -1; |
| int offset = 0; |
| }; |
| |
| // The storrage for Change (below). This struct is trivial, which it has to be in order to store |
| // it in a QV4::Heap::Base object. The Change struct doesn't add any storage fields, so it is |
| // safe to cast ChangeData to/from Change. |
| struct ChangeData |
| { |
| int index; |
| int count; |
| int moveId; |
| int offset; |
| }; |
| |
| struct Change: ChangeData |
| { |
| Change() { |
| index = 0; |
| count = 0; |
| moveId = -1; |
| offset = 0; |
| } |
| Change(int index, int count, int moveId = -1, int offset = 0) { |
| this->index = index; |
| this->count = count; |
| this->moveId = moveId; |
| this->offset = 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; } |
| }; |
| |
| QQmlChangeSet(); |
| QQmlChangeSet(const QQmlChangeSet &changeSet); |
| ~QQmlChangeSet(); |
| |
| QQmlChangeSet &operator =(const QQmlChangeSet &changeSet); |
| |
| const QVector<Change> &removes() const { return m_removes; } |
| const QVector<Change> &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<Change> &inserts); |
| void remove(const QVector<Change> &removes, QVector<Change> *inserts = nullptr); |
| void move(const QVector<Change> &removes, const QVector<Change> &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<Change> *removes, QVector<Change> *inserts); |
| void change(QVector<Change> *changes); |
| |
| QVector<Change> m_removes; |
| QVector<Change> m_inserts; |
| QVector<Change> m_changes; |
| int m_difference; |
| }; |
| |
| Q_DECLARE_TYPEINFO(QQmlChangeSet::Change, 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_QMLMODELS_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet::Change &change); |
| Q_QMLMODELS_PRIVATE_EXPORT QDebug operator <<(QDebug debug, const QQmlChangeSet &change); |
| |
| QT_END_NAMESPACE |
| |
| #endif |