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| |
| #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; |
| } |