bool
PlayableProxyModel::visibilityFilterAcceptsRow( int sourceRow, const QModelIndex& sourceParent, PlayableProxyModelFilterMemo& memo ) const
{
if ( m_maxVisibleItems <= 0 )
return true;
if ( static_cast<size_t>( sourceRow ) < memo.visibilty.size() )
{
// We have already memoized the return value.
return memo.visibilty[sourceRow] < m_maxVisibleItems;
}
// else: We do not have memoized the value, so compute it.
int items = memo.visibilty.back();
for ( int i = memo.visibilty.size() - 1; ( i < sourceRow ) && ( items < m_maxVisibleItems ) ; i++ )
{
PlayableItem* pi = itemFromIndex( sourceModel()->index( i, 0, sourceParent ) );
// We will not change memo in these calls as all values needed in them are already memoized.
if ( pi && dupeFilterAcceptsRow( i, pi, sourceParent, memo ) && nameFilterAcceptsRow( i, pi, sourceParent ) )
{
items++;
memo.visibilty.push_back( items ); // Sets memo.visibilty[i + 1] to items
}
}
return ( items < m_maxVisibleItems );
}
bool BtBookshelfFilterModel::filterAcceptsRow(int row,
const QModelIndex &parent) const
{
if (!m_enabled) return true;
if (!hiddenFilterAcceptsRow(row, parent)) return false;
if (!nameFilterAcceptsRow(row, parent)) return false;
if (!categoryFilterAcceptsRow(row, parent)) return false;
return true;
}
bool
PlayableProxyModel::filterAcceptsRowInternal( int sourceRow, PlayableItem* pi, const QModelIndex& sourceParent, PlayableProxyModelFilterMemo& memo ) const
{
if ( m_maxVisibleItems > 0 && !visibilityFilterAcceptsRow( sourceRow, sourceParent, memo ) )
return false;
if ( m_hideDupeItems && !dupeFilterAcceptsRow( sourceRow, pi, sourceParent, memo ) )
return false;
return nameFilterAcceptsRow( sourceRow, pi, sourceParent );
}