Examples of ptolemy.kernel.util.Locatable

ptolemy.kernel.util.Locatable
An interface for objects storing a location.
This interface is generally implemented by attributes of objects in a model and is used by the Vergil user interface to store the location of objects in the visual editor. @author Edward A. Lee @version $Id: Locatable.java,v 1.15 2005/07/08 19:59:17 cxh Exp $ @since Ptolemy II 2.1 @Pt.ProposedRating Green (cxh) @Pt.AcceptedRating Green (cxh) @see Location

            NamedObj topObject = (NamedObj) topObjects.next();
            try {
                Iterator locations = topObject.attributeList(Locatable.class)
                        .iterator();
                while (locations.hasNext()) {
                    Locatable location = (Locatable) locations.next();
                    double[] locationValue = location.getLocation();
                    for (int i = 0; i < locationValue.length; i++) {
                        locationValue[i] += _PASTE_OFFSET;
                    }
                    location.setLocation(locationValue);
                }
            } catch (IllegalActionException e) {
                MessageHandler.error("Change failed", e);
            }
        }

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     *  @param node The node.
     *  @return True if the node is associated with a desired location.
     */
    public boolean hasLocation(Object node) {
        if (node instanceof Locatable) {
            Locatable object = (Locatable) node;
            double[] location = object.getLocation();


            if ((location != null) && (location.length == 2)) {
                return true;
            }
        }

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         *  @param node The node, which is assumed to be a location.
         *  @return An iterator of Arc objects, all of which have
         *   the given node as their head.
         */
        public Iterator inEdges(Object node) {
            Locatable icon = (Locatable) node;


            // Go through all the links, creating a list of
            // those we are connected to.
            List stateLinkList = new LinkedList();
            Iterator links = _linkSet.iterator();

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         *  @param node The node, which is assumed to be a location.
         *  @return An iterator of Arc objects, all of which have
         *   the given node as their tail.
         */
        public Iterator outEdges(Object node) {
            Locatable icon = (Locatable) node;


            // Go through all the links, creating a list of
            // those we are connected to.
            List stateLinkList = new LinkedList();
            Iterator links = _linkSet.iterator();

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    public class LinkTarget extends PerimeterTarget {
        public boolean acceptHead(Connector c, Figure f) {
            Object object = f.getUserObject();


            if (object instanceof Locatable) {
                Locatable location = (Locatable) object;


                if (location.getContainer() instanceof Entity) {
                    return true;
                } else {
                    return false;
                }
            }

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