int DemosDataSource::GetNumRows( const String& table ) {
// table name represents a relative demo path with a trailing "/":
// "/" represents the root path inside the demo directory
// "tutorials/" represents tutorials subdirectory, etc
// if we haven't yet traversed the queried path, do it now
if( demoPaths.find( table ) == demoPaths.end() ) {
std::string pathStr( table.CString() );
// chop off the trailing "/"
if( pathStr.find_last_of( "/" ) + 1 == pathStr.length() ) {
pathStr = pathStr.substr( 0, pathStr.length() - 1 );
}
// the helper will start sending updates the next frame
demoPaths[table] = DemosDataSourceHelper( pathStr, demoExtension );
}
if( !lastQueryTable.Empty() ) {
// reset cache on directory change
if( lastQueryTable != table ) {
demoPaths.erase( demoPaths.find( lastQueryTable ) );
NotifyRowChange( lastQueryTable );
}
}
lastQueryTable = table;
const DemosDataSourceHelper &demoPath = demoPaths[table];
return demoPath.GetUpdateIndex();
}
void ItemViewModel::refresh(int rowIndex)
{
NotifyRowChange("items", rowIndex, 1);
}
