package org.simantics.spreadsheet.solver;

import org.simantics.databoard.binding.mutable.Variant;
import org.simantics.spreadsheet.ExternalRef;

public class ExternalRefConstant implements ExternalRef {

    final private Variant constant;
    
    public ExternalRefConstant(Variant constant) {
        this.constant = constant;
    }
    
    @Override
    public void listen(Object context, ExternalRefListener listener) {
        listener.newValue(constant);
    }
    
    @Override
    public void modify(Object context, Variant newValue) {
    }
    
}