package org.simantics.selectionview;

import java.util.Collection;
import java.util.Collections;

import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.variable.Variable;

abstract public class AbstractTypedVariableTabContribution extends AbstractTypedTabContribution<Variable> {

	public AbstractTypedVariableTabContribution(ReadGraph graph, Resource configuration) throws DatabaseException {
		super(graph, configuration);
	}

    @Override
    public boolean accept(ReadGraph graph, Object input, Collection<Resource> types) throws DatabaseException {
        
        if (!(input instanceof Variable))
            return false;
        Variable variable = (Variable) input;

        Resource resource = variable.getPossibleRepresents(graph);
        if (resource == null)
            return false;

        Collection<Resource> ts = graph.getTypes(resource);
        return !Collections.disjoint(types, ts);
    }
}