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#ifndef QABSTRACTITEMMODEL_P_H
#define QABSTRACTITEMMODEL_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of QAbstractItemModel*. This header file may change from version
// to version without notice, or even be removed.
//
// We mean it.
//
//
#include "private/qobject_p.h"
#include "QtCore/qstack.h"
#include "QtCore/qset.h"
#include "QtCore/qhash.h"
QT_BEGIN_NAMESPACE
class QPersistentModelIndexData
{
public:
QPersistentModelIndexData() : model(0) {}
QPersistentModelIndexData(const QModelIndex &idx) : index(idx), model(idx.model()) {}
QModelIndex index;
QAtomicInt ref;
const QAbstractItemModel *model;
static QPersistentModelIndexData *create(const QModelIndex &index);
static void destroy(QPersistentModelIndexData *data);
};
class Q_CORE_EXPORT QAbstractItemModelPrivate : public QObjectPrivate
{
Q_DECLARE_PUBLIC(QAbstractItemModel)
public:
QAbstractItemModelPrivate() : QObjectPrivate(), supportedDragActions(-1), roleNames(defaultRoleNames()) {}
void removePersistentIndexData(QPersistentModelIndexData *data);
void movePersistentIndexes(QVector<QPersistentModelIndexData *> indexes, int change, const QModelIndex &parent, Qt::Orientation orientation);
void rowsAboutToBeInserted(const QModelIndex &parent, int first, int last);
void rowsInserted(const QModelIndex &parent, int first, int last);
void rowsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
void rowsRemoved(const QModelIndex &parent, int first, int last);
void columnsAboutToBeInserted(const QModelIndex &parent, int first, int last);
void columnsInserted(const QModelIndex &parent, int first, int last);
void columnsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
void columnsRemoved(const QModelIndex &parent, int first, int last);
static QAbstractItemModel *staticEmptyModel();
static bool variantLessThan(const QVariant &v1, const QVariant &v2);
void itemsAboutToBeMoved(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation);
void itemsMoved(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation orientation);
bool allowMove(const QModelIndex &srcParent, int srcFirst, int srcLast, const QModelIndex &destinationParent, int destinationChild, Qt::Orientation orientation);
inline QModelIndex createIndex(int row, int column, void *data = 0) const {
return q_func()->createIndex(row, column, data);
}
inline QModelIndex createIndex(int row, int column, int id) const {
return q_func()->createIndex(row, column, id);
}
inline bool indexValid(const QModelIndex &index) const {
return (index.row() >= 0) && (index.column() >= 0) && (index.model() == q_func());
}
inline void invalidatePersistentIndexes() {
foreach (QPersistentModelIndexData *data, persistent.indexes) {
data->index = QModelIndex();
data->model = 0;
}
persistent.indexes.clear();
}
/*!
\internal
clean the QPersistentModelIndex relative to the index if there is one.
To be used before an index is invalided
*/
inline void invalidatePersistentIndex(const QModelIndex &index) {
QHash<QModelIndex, QPersistentModelIndexData *>::iterator it = persistent.indexes.find(index);
if(it != persistent.indexes.end()) {
QPersistentModelIndexData *data = *it;
persistent.indexes.erase(it);
data->index = QModelIndex();
data->model = 0;
}
}
struct Change {
Change() : first(-1), last(-1) {}
Change(const Change &c) : parent(c.parent), first(c.first), last(c.last) {}
Change(const QModelIndex &p, int f, int l) : parent(p), first(f), last(l) {}
QModelIndex parent;
int first, last;
bool isValid() { return first >= 0 && last >= 0; }
};
QStack<Change> changes;
struct Persistent {
Persistent() {}
QHash<QModelIndex, QPersistentModelIndexData *> indexes;
QStack<QVector<QPersistentModelIndexData *> > moved;
QStack<QVector<QPersistentModelIndexData *> > invalidated;
void insertMultiAtEnd(const QModelIndex& key, QPersistentModelIndexData *data);
} persistent;
Qt::DropActions supportedDragActions;
QHash<int,QByteArray> roleNames;
static const QHash<int,QByteArray> &defaultRoleNames();
};
QT_END_NAMESPACE
#endif // QABSTRACTITEMMODEL_P_H