/*
 * Java-Gnome Bindings Library
 *
 * Copyright 1998-2004 the Java-Gnome Team, all rights reserved.
 *
 * The Java-Gnome bindings library is free software distributed under
 * the terms of the GNU Library General Public License version 2.
 */

package org.gnu.atk;

import org.gnu.glib.GObject;
import org.gnu.glib.Handle;

public class RelationSet extends GObject 
{
	/**
	 * Create a new empty RelationSet
	 */
	public RelationSet() {
		super(atk_relation_set_new());
	}
	
	/**
	 * Add a new relation to the current relation set if it is not already present.
	 */
	public void add(Relation relation) {
		atk_relation_set_add(getHandle(), relation.getHandle());
	}
	
    public void add(RelationType type, AtkObject target) {
        atk_relation_set_add_relation_by_type(getHandle(), type.getValue(), target.getHandle());
    }

    /**
	 * Remove a relation from the relation set.
	 */
	public void remove(Relation relation) {
		atk_relation_set_remove(getHandle(), relation.getHandle());
	}
	
	/**
	 * Determines whether the relation set contains a relation that matches
	 * the specified type.
	 */
	public boolean contains(RelationType relationship) {
		return atk_relation_set_contains(getHandle(), relationship.getValue());
	}

    public int getNumRelations() {
        return atk_relation_set_get_n_relations(getHandle()); 
    }
    
    public Relation getRelation(int index) {
        return new Relation(atk_relation_set_get_relation(getHandle(), index));
    }
    
    public Relation getRelationByType(RelationType type) {
        return new Relation(atk_relation_set_get_relation_by_type(getHandle(), type.getValue()));
    }
    
	
    native static final protected int atk_relation_set_get_type ();
    native static final protected Handle atk_relation_set_new ();
    native static final protected boolean atk_relation_set_contains (Handle set, int relationship);
    native static final protected void atk_relation_set_remove (Handle set, Handle relation);
    native static final protected void atk_relation_set_add (Handle set, Handle relation);
    native static final protected int atk_relation_set_get_n_relations (Handle set);
    native static final protected Handle atk_relation_set_get_relation (Handle set, int index);
    native static final protected Handle atk_relation_set_get_relation_by_type (Handle set, int relationship);
    native static final protected void atk_relation_set_add_relation_by_type(Handle set, int relationship, Handle target);
    
}