edu.stanford.protege.widgetmap.client.RootNodeChangedEvent Maven / Gradle / Ivy

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package edu.stanford.protege.widgetmap.client;

import com.google.web.bindery.event.shared.Event;
import edu.stanford.protege.widgetmap.shared.node.Node;

import java.util.Optional;

/**
 * Author: Matthew Horridge

 * Stanford University

 * Bio-Medical Informatics Research Group

 * Date: 09/01/2014
 */
public class RootNodeChangedEvent extends Event {

    public static final Type TYPE = new Type();

    private Optional from;

    private Optional to;

    public RootNodeChangedEvent(HasRootNode source, Optional from, Optional to) {
        setSource(source);
        this.from = from;
        this.to = to;
    }

    public Optional getFrom() {
        return from;
    }

    public Optional getTo() {
        return to;
    }

    @Override
    public HasRootNode getSource() {
        return (HasRootNode) super.getSource();
    }

    @Override
    public Type getAssociatedType() {
        return TYPE;
    }

    @Override
    protected void dispatch(RootNodeChangedHandler handler) {
        handler.handleRootNodeChanged(this);
    }
}