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/****************************************************************************
**
** 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 documentation 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/****************************************************************************
**
** 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 an example program for Qt.
** EDITIONS: NOLIMITS
**
****************************************************************************/
#include <QtGui>
#include "dragdropmodel.h"
DragDropModel::DragDropModel(const QStringList &strings, QObject *parent)
: TreeModel(strings, parent)
{
}
bool DragDropModel::dropMimeData(const QMimeData *data,
Qt::DropAction action, int row, int column, const QModelIndex &parent)
{
if (action == Qt::IgnoreAction)
return true;
if (!data->hasFormat("text/plain"))
return false;
int beginRow;
if (row != -1)
beginRow = row;
else if (parent.isValid())
beginRow = 0;
else
beginRow = rowCount(QModelIndex());
QByteArray encodedData = data->data("text/plain");
QDataStream stream(&encodedData, QIODevice::ReadOnly);
QHash<qint64, QMap<int,QHash<int,QString> > > newItems;
while (!stream.atEnd()) {
qint64 id;
int row;
int column;
QString text;
stream >> id >> row >> column >> text;
newItems[id][row][column] = text;
}
int rows = newItems.count();
insertRows(beginRow, rows, parent);
QMap<int,QHash<int,QString> > childItems;
foreach (childItems, newItems.values()) {
QHash<int,QString> rowItems;
foreach (rowItems, childItems.values()) {
foreach (int column, rowItems.keys()) {
QModelIndex idx = index(beginRow, column, parent);
setData(idx, rowItems[column]);
}
++beginRow;
}
}
return true;
}
Qt::ItemFlags DragDropModel::flags(const QModelIndex &index) const
{
Qt::ItemFlags defaultFlags = TreeModel::flags(index);
if (index.isValid())
return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
else
return Qt::ItemIsDropEnabled | defaultFlags;
}
QMimeData *DragDropModel::mimeData(const QModelIndexList &indexes) const
{
QMimeData *mimeData = new QMimeData();
QByteArray encodedData;
QDataStream stream(&encodedData, QIODevice::WriteOnly);
foreach (QModelIndex index, indexes) {
if (index.isValid()) {
QString text = data(index, Qt::DisplayRole).toString();
stream << index.internalId() << index.row() << index.column() << text;
}
}
mimeData->setData("text/plain", encodedData);
return mimeData;
}
QStringList DragDropModel::mimeTypes() const
{
QStringList types;
types << "text/plain";
return types;
}
Qt::DropActions DragDropModel::supportedDropActions() const
{
return Qt::CopyAction | Qt::MoveAction;
}
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