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#include "DraggableListModel.h"
#include "../dictionary/CardPack.h"
#include "../dictionary/Field.h"
#include <QMimeData>
Qt::ItemFlags DraggableListModel::flags(const QModelIndex &index) const
{
Qt::ItemFlags defaultFlags = QAbstractListModel::flags(index);
if (index.isValid())
return Qt::ItemIsDragEnabled | defaultFlags;
else
return Qt::ItemIsDropEnabled | defaultFlags;
}
Qt::DropActions DraggableListModel::supportedDropActions() const
{
return Qt::MoveAction;
}
QStringList DraggableListModel::mimeTypes() const
{
QStringList types;
types << "application/octet-stream";
return types;
}
QMimeData *DraggableListModel::mimeData(const QModelIndexList &indexes) const
{
QStringList list;
QModelIndexList validIndexes;
foreach (QModelIndex index, indexes)
if (index.isValid() && index.column() == 0)
validIndexes << index;
qSort(validIndexes);
int num = validIndexes.size();
QByteArray encodedData;
QDataStream stream( &encodedData, QIODevice::WriteOnly );
const void** ptrs = new const void*[num];
int i=0;
foreach (QModelIndex index, validIndexes)
ptrs[i++] = dataPtr( index );
stream.writeBytes( (char*)ptrs, num*sizeof(void*) );
delete ptrs;
QMimeData *mimeData = new QMimeData();
mimeData->setData( "application/octet-stream", encodedData );
return mimeData;
}
bool DraggableListModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
int row, int /*column*/, const QModelIndex &parent)
{
if (action == Qt::IgnoreAction)
return true;
if (!data->hasFormat("application/octet-stream"))
return false;
int beginRow;
if (row != -1)
beginRow = row;
else if (parent.isValid())
beginRow = parent.row();
else
beginRow = rowCount(QModelIndex());
QByteArray encodedData = data->data("application/octet-stream");
QDataStream stream( &encodedData, QIODevice::ReadOnly );
void** ptrs = new void*[ rowCount() ];
uint num;
stream.readBytes( (char*&)ptrs, num ); //TODO: Avoid converting pointer to other types
num /= sizeof(void*);
QList<QPersistentModelIndex> movedIndexes;
for(uint i=0; i<num; i++)
{
insertPointer( beginRow + i, ptrs[i] );
movedIndexes << QPersistentModelIndex( index(beginRow + i, 0, QModelIndex()) );
}
delete ptrs;
emit indexesDropped( movedIndexes );
return true;
}
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