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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial Usage
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of an example program for Qt.
+** EDITIONS: NOLIMITS
+**
+****************************************************************************/
+
+/*
+ model.cpp
+
+ A simple model that uses a QStringList as its data source.
+*/
+
+#include <QtGui>
+
+#include "model.h"
+
+DragDropListModel::DragDropListModel(const QStringList &strings,
+ QObject *parent)
+ : QStringListModel(strings, parent)
+{
+}
+
+//! [0]
+bool DragDropListModel::dropMimeData(const QMimeData *data,
+ Qt::DropAction action, int row, int column, const QModelIndex &parent)
+{
+ if (action == Qt::IgnoreAction)
+ return true;
+
+ if (!data->hasFormat("application/vnd.text.list"))
+ return false;
+
+ if (column > 0)
+//! [0] //! [1]
+ return false;
+//! [1]
+
+//! [2]
+ int beginRow;
+
+ if (row != -1)
+ beginRow = row;
+//! [2] //! [3]
+ else if (parent.isValid())
+ beginRow = parent.row();
+//! [3] //! [4]
+ else
+ beginRow = rowCount(QModelIndex());
+//! [4]
+
+//! [5]
+ QByteArray encodedData = data->data("application/vnd.text.list");
+ QDataStream stream(&encodedData, QIODevice::ReadOnly);
+ QStringList newItems;
+ int rows = 0;
+
+ while (!stream.atEnd()) {
+ QString text;
+ stream >> text;
+ newItems << text;
+ ++rows;
+ }
+//! [5]
+
+//! [6]
+ insertRows(beginRow, rows, QModelIndex());
+ foreach (QString text, newItems) {
+ QModelIndex idx = index(beginRow, 0, QModelIndex());
+ setData(idx, text);
+ beginRow++;
+ }
+
+ return true;
+}
+//! [6]
+
+//! [7]
+Qt::ItemFlags DragDropListModel::flags(const QModelIndex &index) const
+{
+ Qt::ItemFlags defaultFlags = QStringListModel::flags(index);
+
+ if (index.isValid())
+ return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
+ else
+ return Qt::ItemIsDropEnabled | defaultFlags;
+}
+//! [7]
+
+//! [8]
+QMimeData *DragDropListModel::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 << text;
+ }
+ }
+
+ mimeData->setData("application/vnd.text.list", encodedData);
+ return mimeData;
+}
+//! [8]
+
+//! [9]
+QStringList DragDropListModel::mimeTypes() const
+{
+ QStringList types;
+ types << "application/vnd.text.list";
+ return types;
+}
+//! [9]
+
+//! [10]
+Qt::DropActions DragDropListModel::supportedDropActions() const
+{
+ return Qt::CopyAction | Qt::MoveAction;
+}
+//! [10]