package org.simantics.selectionview;

import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.exception.DatabaseException;

abstract public class AbstractTypedResourceTabContribution extends AbstractResourceTabContribution {

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

	
	@Override
	public boolean accept(ReadGraph graph, Object input) throws DatabaseException {

		if (!(input instanceof Resource))
			return false;
		Resource resource = (Resource) input;

		SelectionViewResources SEL = SelectionViewResources.getInstance(graph);

		Resource type = graph.getPossibleObject(configuration, SEL.AbstractTypedResourceTabContribution_HasType);
		if(type == null) throw new DatabaseException("No type for " + graph.getPossibleURI(configuration));

		if(!graph.isInstanceOf(resource, type)) return false;
		
		return super.accept(graph, resource);
		
	}
	
}