sortfilterproxymodel.cpp Example File

tableview/src/sortfilterproxymodel.cpp
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 #include "sortfilterproxymodel.h"
 #include <QtDebug>
 #include <QtQml>

 SortFilterProxyModel::SortFilterProxyModel(QObject *parent) : QSortFilterProxyModel(parent), m_complete(false)
 {
     connect(this, &QSortFilterProxyModel::rowsInserted, this, &SortFilterProxyModel::countChanged);
     connect(this, &QSortFilterProxyModel::rowsRemoved, this, &SortFilterProxyModel::countChanged);
 }

 int SortFilterProxyModel::count() const
 {
     return rowCount();
 }

 QObject *SortFilterProxyModel::source() const
 {
     return sourceModel();
 }

 void SortFilterProxyModel::setSource(QObject *source)
 {
     setSourceModel(qobject_cast<QAbstractItemModel *>(source));
 }

 QByteArray SortFilterProxyModel::sortRole() const
 {
     return m_sortRole;
 }

 void SortFilterProxyModel::setSortRole(const QByteArray &role)
 {
     if (m_sortRole != role) {
         m_sortRole = role;
         if (m_complete)
             QSortFilterProxyModel::setSortRole(roleKey(role));
     }
 }

 void SortFilterProxyModel::setSortOrder(Qt::SortOrder order)
 {
     QSortFilterProxyModel::sort(0, order);
 }

 QByteArray SortFilterProxyModel::filterRole() const
 {
     return m_filterRole;
 }

 void SortFilterProxyModel::setFilterRole(const QByteArray &role)
 {
     if (m_filterRole != role) {
         m_filterRole = role;
         if (m_complete)
             QSortFilterProxyModel::setFilterRole(roleKey(role));
     }
 }

 QString SortFilterProxyModel::filterString() const
 {
     return filterRegExp().pattern();
 }

 void SortFilterProxyModel::setFilterString(const QString &filter)
 {
     setFilterRegExp(QRegExp(filter, filterCaseSensitivity(), static_cast<QRegExp::PatternSyntax>(filterSyntax())));
 }

 SortFilterProxyModel::FilterSyntax SortFilterProxyModel::filterSyntax() const
 {
     return static_cast<FilterSyntax>(filterRegExp().patternSyntax());
 }

 void SortFilterProxyModel::setFilterSyntax(SortFilterProxyModel::FilterSyntax syntax)
 {
     setFilterRegExp(QRegExp(filterString(), filterCaseSensitivity(), static_cast<QRegExp::PatternSyntax>(syntax)));
 }

 QJSValue SortFilterProxyModel::get(int idx) const
 {
     QJSEngine *engine = qmlEngine(this);
     QJSValue value = engine->newObject();
     if (idx >= 0 && idx < count()) {
         QHash<int, QByteArray> roles = roleNames();
         QHashIterator<int, QByteArray> it(roles);
         while (it.hasNext()) {
             it.next();
             value.setProperty(QString::fromUtf8(it.value()), data(index(idx, 0), it.key()).toString());
         }
     }
     return value;
 }

 void SortFilterProxyModel::classBegin()
 {
 }

 void SortFilterProxyModel::componentComplete()
 {
     m_complete = true;
     if (!m_sortRole.isEmpty())
         QSortFilterProxyModel::setSortRole(roleKey(m_sortRole));
     if (!m_filterRole.isEmpty())
         QSortFilterProxyModel::setFilterRole(roleKey(m_filterRole));
 }

 int SortFilterProxyModel::roleKey(const QByteArray &role) const
 {
     QHash<int, QByteArray> roles = roleNames();
     QHashIterator<int, QByteArray> it(roles);
     while (it.hasNext()) {
         it.next();
         if (it.value() == role)
             return it.key();
     }
     return -1;
 }

 QHash<int, QByteArray> SortFilterProxyModel::roleNames() const
 {
     if (QAbstractItemModel *source = sourceModel())
         return source->roleNames();
     return QHash<int, QByteArray>();
 }

 bool SortFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const
 {
     QRegExp rx = filterRegExp();
     if (rx.isEmpty())
         return true;
     QAbstractItemModel *model = sourceModel();
     if (filterRole().isEmpty()) {
         QHash<int, QByteArray> roles = roleNames();
         QHashIterator<int, QByteArray> it(roles);
         while (it.hasNext()) {
             it.next();
             QModelIndex sourceIndex = model->index(sourceRow, 0, sourceParent);
             QString key = model->data(sourceIndex, it.key()).toString();
             if (key.contains(rx))
                 return true;
         }
         return false;
     }
     QModelIndex sourceIndex = model->index(sourceRow, 0, sourceParent);
     if (!sourceIndex.isValid())
         return true;
     QString key = model->data(sourceIndex, roleKey(filterRole())).toString();
     return key.contains(rx);
 }