bool MailboxModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
int row, int column, const QModelIndex &parent)
{
Q_UNUSED(row); Q_UNUSED(column);
if (action != Qt::CopyAction && action != Qt::MoveAction)
return false;
if (! parent.isValid())
return false;
if (! static_cast<Model *>(sourceModel())->isNetworkAvailable())
return false;
TreeItemMailbox *target = dynamic_cast<TreeItemMailbox *>(static_cast<TreeItem *>(parent.internalPointer()));
Q_ASSERT(target);
if (! target->isSelectable())
return false;
QByteArray encodedData = data->data(QLatin1String("application/x-trojita-message-list"));
QDataStream stream(&encodedData, QIODevice::ReadOnly);
Q_ASSERT(! stream.atEnd());
QString origMboxName;
stream >> origMboxName;
TreeItemMailbox *origMbox = static_cast<Model *>(sourceModel())->findMailboxByName(origMboxName);
if (! origMbox) {
qDebug() << "Can't find original mailbox when performing a drag&drop on messages";
return false;
}
uint uidValidity;
stream >> uidValidity;
if (uidValidity != origMbox->syncState.uidValidity()) {
qDebug() << "UID validity for original mailbox got changed, can't copy messages";
return false;
}
Imap::Uids uids;
stream >> uids;
static_cast<Model *>(sourceModel())->copyMoveMessages(origMbox, target->mailbox(), uids,
(action == Qt::MoveAction) ? MOVE : COPY);
return true;
}
Qt::ItemFlags MailboxModel::flags(const QModelIndex &index) const
{
if (! index.isValid())
return QAbstractProxyModel::flags(index);
TreeItemMailbox *mbox = dynamic_cast<TreeItemMailbox *>(static_cast<TreeItem *>(index.internalPointer()));
Q_ASSERT(mbox);
Qt::ItemFlags res = QAbstractProxyModel::flags(index);
if (!mbox->isSelectable()) {
res &= ~Qt::ItemIsSelectable;
res |= Qt::ItemIsEnabled;
}
if (static_cast<Model *>(sourceModel())->isNetworkAvailable()) {
res |= Qt::ItemIsDropEnabled;
}
return res;
}
