org.apache.cayenne.modeler.graph.GraphMap Maven / Gradle / Ivy

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package org.apache.cayenne.modeler.graph;

import java.util.HashMap;

import org.apache.cayenne.CayenneRuntimeException;
import org.apache.cayenne.configuration.DataChannelDescriptor;
import org.apache.cayenne.modeler.Application;
import org.apache.cayenne.modeler.ProjectController;

/**
 * Map that stores graph builders for a single domain by their type 
 * and has additional methods to set currently selected graph and serialize to XML
 */
public class GraphMap extends HashMap {
    /**
     * type that is currently selected
     */
    GraphType selectedType;
    
    /**
     * Domain
     */
    DataChannelDescriptor domain;
    
    public GraphMap(DataChannelDescriptor domain) {
        this.domain = domain;
    }
     
    /**
     * Returns domain
     */
    public DataChannelDescriptor getDomain() {
        return domain;
    }
    
    /**
     * Returns type that is currently selected
     */
    public GraphType getSelectedType() {
        return selectedType;
    }
    
    /**
     * Sets type that is currently selected
     */
    public void setSelectedType(GraphType selectedType) {
        this.selectedType = selectedType;
    }
    
    public GraphBuilder createGraphBuilder(GraphType type, boolean doLayout) {
        try {
            GraphBuilder builder = type.getBuilderClass().getDeclaredConstructor().newInstance();
            builder.buildGraph(getProjectController(), domain, doLayout);
            put(type, builder);
            
            return builder;
        } catch (Exception e) {
            throw new CayenneRuntimeException("Could not instantiate GraphBuilder", e);
        }
    }

    private ProjectController getProjectController() {
        return Application.getInstance().getFrameController().getProjectController();
    }
}