public async Task ToggleFavs()
{
if ( !FavOnly )
{
BookStorage BS = new BookStorage();
string[] BookIds = BS.GetIdList();
List<ActiveItem> SS = new List<ActiveItem>();
foreach ( string Id in BookIds )
{
if ( Data != null && Data.Any( x => ( x as LocalBook ).aid == Id ) )
{
continue;
}
LocalBook LB = await LocalBook.CreateAsync( Id );
if ( !( LB.CanProcess || LB.ProcessSuccess ) )
{
XParameter Param = BS.GetBook( Id );
LB.Name = Param.GetValue( AppKeys.GLOBAL_NAME );
LB.Desc = "Source is unavailable";
LB.CanProcess = false;
}
LB.IsFav = true;
SS.Add( LB );
}
if ( 0 < SS.Count )
{
if ( Data == null ) Data = SS;
else Data = Data.Concat( SS );
}
FavOnly = true;
}
else
{
FavOnly = false;
if ( Data != null )
{
Data = Data.Where( x =>
{
LocalBook LB = x as LocalBook;
if ( LB.IsFav ) return LB.ProcessSuccess || LB.Processing || LB.CanProcess;
return true;
} );
}
}
NotifyChanged( "SearchSet" );
}