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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#undef QT_NO_FOREACH // this file contains unported legacy Q_FOREACH uses
#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 (const 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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