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 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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package org.apache.cayenne.modeler.graph;

import javax.swing.event.UndoableEditListener;

import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.map.Entity;
import org.apache.cayenne.modeler.ProjectController;
import org.apache.cayenne.util.XMLSerializable;
import org.jgraph.JGraph;
import org.jgraph.graph.DefaultGraphCell;

/**
 * Interface for building graphs which represent some perspective of a domain
 */
public interface GraphBuilder extends XMLSerializable, UndoableEditListener {

    double ZOOM_FACTOR = 1.3;
    
    /**
     * Builds graph
     */
    void buildGraph(ProjectController mediator, DataChannelDescriptor domain, boolean layout);
    
    /**
     * Invoked at destroying of the builder
     */
    void destroy();
    
    /**
     * Returns built graph for this builder
     */
    JGraph getGraph();
    
    /**
     * Returns domain.
     */
    DataChannelDescriptor getDataDomain();
        
    /**
     * Returns type of the graph
     */
    GraphType getType();
    
    /**
     * Returns selected entity, null if none is selected
     */
    Entity getSelectedEntity();
    
    /**
     * Returns cell of an entity
     */
    DefaultGraphCell getEntityCell(String entityName);
}