summaryrefslogtreecommitdiffstats
path: root/src/corelib/itemmodels/qabstractitemmodel_p.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/corelib/itemmodels/qabstractitemmodel_p.h')
-rw-r--r--src/corelib/itemmodels/qabstractitemmodel_p.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/src/corelib/itemmodels/qabstractitemmodel_p.h b/src/corelib/itemmodels/qabstractitemmodel_p.h
new file mode 100644
index 0000000000..86680dd0bc
--- /dev/null
+++ b/src/corelib/itemmodels/qabstractitemmodel_p.h
@@ -0,0 +1,176 @@
+/****************************************************************************
+**
+** 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 QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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), needsAdjust(c.needsAdjust) {}
+ Change(const QModelIndex &p, int f, int l) : parent(p), first(f), last(l), needsAdjust(false) {}
+ QModelIndex parent;
+ int first, last;
+
+
+ // In cases such as this:
+ // - A
+ // - B
+ // - C
+ // - - D
+ // - - E
+ // - - F
+ //
+ // If B is moved to above E, C is the source parent in the signal and its row is 2. When the move is
+ // completed however, C is at row 1 and there is no row 2 at the same level in the model at all.
+ // The QModelIndex is adjusted to correct that in those cases before reporting it though the
+ // rowsMoved signal.
+ bool needsAdjust;
+
+ 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