WSJT-X/CandidateKeyFilter.hpp
Bill Somerville dad4863e84 Ensure all model proxy caches are flushed before access
This fixes a defect where station detail changes are not saved.

The Qt sort and filter proxy models utilize an item cache that must be
flushed by  callig submit() before  accessing the underlying  model if
the proxy model has been used for updates.

Also  separated  the   item  model  candidate  key   filter  from  the
implementation  internals of  the foreign  key item  delegate so  that
candidate key filtered models can be used directly as view models.

Make the insert new station details band combo box use a candidate key
filtered item model to avoid constraint violations. Constraint is zero
or one station records per band.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5161 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-04-06 01:57:47 +00:00

37 lines
1.1 KiB
C++

#ifndef CANDIDATE_KEY_FILTER_HPP_
#define CANDIDATE_KEY_FILTER_HPP_
#include <QSortFilterProxyModel>
#include <QModelIndex>
#include "pimpl_h.hpp"
class QAbstractItemModel;
class CandidateKeyFilter final
: public QSortFilterProxyModel
{
public:
explicit CandidateKeyFilter (QAbstractItemModel const * referencing_model
, QAbstractItemModel * referenced_model
, int referencing_key_column = 0
, int referenced_key_column = 0
, int referencing_key_role = Qt::EditRole
, int referenced_key_role = Qt::EditRole);
~CandidateKeyFilter ();
// this key is not to be filtered, usually because we want to allow
// it since we are editing the row that contains it this it is valid
// even though it is in use
void set_active_key (QModelIndex const& index = QModelIndex {});
protected:
bool filterAcceptsRow (int candidate_row, QModelIndex const& candidate_parent) const override;
private:
class impl;
pimpl<impl> m_;
};
#endif