QModelIndexList QtTreeWidget::getSelectedIndexes() const {

// Not using selectedIndexes(), because this seems to cause a crash in Qt (4.7.0) in the

// QModelIndexList destructor.

// This is a workaround posted in http://www.qtcentre.org/threads/16933 (although this case

// was resolved by linking against the debug libs, ours isn't, and we're not alone)

QItemSelection ranges = selectionModel()->selection();

QModelIndexList selectedIndexList;

for (int i = 0; i < ranges.count(); ++i) {

QModelIndex parent = ranges.at(i).parent();

int right = ranges.at(i).model()->columnCount(parent) - 1;

if (ranges.at(i).left() == 0 && ranges.at(i).right() == right) {

for (int r = ranges.at(i).top(); r <= ranges.at(i).bottom(); ++r) {

selectedIndexList.append(ranges.at(i).model()->index(r, 0, parent));

}

}

}

return selectedIndexList;

}

void QtTreeWidget::currentChanged(const QModelIndex& current, const QModelIndex& previous) {

RosterItem* item = NULL;

QModelIndexList selectedIndexList = getSelectedIndexes();

if (selectedIndexList.empty() || !selectedIndexList[0].isValid()) {

/* I didn't quite understand why using current didn't seem to work here.*/

}

else if (current.isValid()) {

item = static_cast<RosterItem*>(current.internalPointer());

item = dynamic_cast<ContactRosterItem*>(item);

}

onSomethingSelectedChanged(item);

QTreeView::currentChanged(current, previous);

}

void QtTreeWidget::handleItemActivated(const QModelIndex& index) {

}

}

}

}

void QtTreeWidget::dragEnterEvent(QDragEnterEvent *event) {

if (event->mimeData()->hasUrls() && event->mimeData()->urls().size() == 1) {

event->acceptProposedAction();

}

}

void QtTreeWidget::dropEvent(QDropEvent *event) {

QModelIndex index = indexAt(event->pos());

if (index.isValid()) {

RosterItem* item = static_cast<RosterItem*>(index.internalPointer());

if (ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item)) {

if (contact->supportsFeature(ContactRosterItem::FileTransferFeature)) {

QString filename = event->mimeData()->urls().at(0).toLocalFile();

if (!filename.isEmpty()) {

eventStream_->send(boost::make_shared<SendFileUIEvent>(contact->getJID(), Q2PSTRING(filename)));

}

}

}

}

}

void QtTreeWidget::dragMoveEvent(QDragMoveEvent* event) {

QModelIndex index = indexAt(event->pos());

if (index.isValid()) {

RosterItem* item = static_cast<RosterItem*>(index.internalPointer());

if (ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item)) {

if (contact->supportsFeature(ContactRosterItem::FileTransferFeature)) {

event->accept();

return;

}

}

}

QColor RosterModel::getBackgroundColor(RosterItem* item) const {

return dynamic_cast<ContactRosterItem*>(item) ? intToColor(0xFFFFFF) : intToColor(0x969696);

}

QString RosterModel::getToolTip(RosterItem* item) const {

QString tip(P2QSTRING(item->getDisplayName()));

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

if (contact) {

return RosterTooltip::buildDetailedTooltip(contact, cachedImageScaler_);

}

return tip;

}

QString RosterModel::getAvatar(RosterItem* item) const {

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

if (!contact) {

return "";

}

return P2QSTRING(pathToString(contact->getAvatarPath()));

}

QString RosterModel::getStatusText(RosterItem* item) const {

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

if (!contact) return "";

return P2QSTRING(contact->getStatusText());

}

QString RosterModel::getJID(RosterItem* item) const {

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

return contact ? P2QSTRING(contact->getJID().toString()) : QString();

}

QString RosterModel::getDisplayJID(RosterItem* item) const {

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

}

QIcon RosterModel::getPresenceIcon(RosterItem* item) const {

ContactRosterItem* contact = dynamic_cast<ContactRosterItem*>(item);

if (!contact) return QIcon();

if (contact->blockState() == ContactRosterItem::IsBlocked ||

contact->blockState() == ContactRosterItem::IsDomainBlocked) {

return QIcon(":/icons/stop.png");

}

return QIcon(statusShowTypeToIconPath(contact->getStatusShow()));

}

QModelIndex RosterModel::index(int row, int column, const QModelIndex& parent) const {

if (!roster_) {

return QModelIndex();

}

GroupRosterItem* parentItem;

if (!parent.isValid()) {

//top level

parentItem = roster_->getRoot();

} else {

parentItem = dynamic_cast<GroupRosterItem*>(getItem(parent));

if (!parentItem) return QModelIndex();

}

return static_cast<size_t>(row) < parentItem->getDisplayedChildren().size() ? createIndex(row, column, parentItem->getDisplayedChildren()[row]) : QModelIndex();

}

QModelIndex RosterModel::index(RosterItem* item) const {

GroupRosterItem* parent = item->getParent();

/* Recursive check that it's ok to create such an item

Assuming there are more contacts in a group than groups in a

group, this could save a decent chunk of search time at startup.*/

if (parent == NULL || roster_ == NULL || (parent != roster_->getRoot() && !index(parent).isValid())) {