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#include "modelutils.h"
#include <QAbstractProxyModel>
QModelIndexList flatIndex(
const QAbstractItemModel* model, int column, const QModelIndex& parent)
{
QModelIndexList index;
for (std::size_t i = 0; i < model->rowCount(parent); ++i) {
index.append(model->index(i, column, parent));
index.append(flatIndex(model, column, index.back()));
}
return index;
}
QModelIndex indexModelToView(const QModelIndex& index, const QAbstractItemView* view)
{
// we need to stack the proxy
std::vector<QAbstractProxyModel*> proxies;
{
auto* currentModel = view->model();
while (auto* proxy = qobject_cast<QAbstractProxyModel*>(currentModel)) {
proxies.push_back(proxy);
currentModel = proxy->sourceModel();
}
}
if (proxies.empty() || proxies.back()->sourceModel() != index.model()) {
return QModelIndex();
}
auto qindex = index;
for (auto rit = proxies.rbegin(); rit != proxies.rend(); ++rit) {
qindex = (*rit)->mapFromSource(qindex);
}
return qindex;
}
QModelIndexList indexModelToView(const QModelIndexList& index, const QAbstractItemView* view)
{
QModelIndexList result;
for (auto& idx : index) {
result.append(indexModelToView(idx, view));
}
return result;
}
QModelIndex indexViewToModel(const QModelIndex& index, const QAbstractItemModel* model)
{
if (index.model() == model) {
return index;
}
else if (auto* proxy = qobject_cast<const QAbstractProxyModel*>(index.model())) {
return indexViewToModel(proxy->mapToSource(index), model);
}
else {
return QModelIndex();
}
}
QModelIndexList indexViewToModel(const QModelIndexList& index, const QAbstractItemModel* model)
{
QModelIndexList result;
for (auto& idx : index) {
result.append(indexViewToModel(idx, model));
}
return result;
}
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