Examples of diva.canvas.interactor.SelectionModel

diva.canvas.interactor.SelectionModel
A model for graph selections. Listeners can add themselves to the model and are notified by SelectionEvents when the model is modified. @author Michael Shilman @version $Id: SelectionModel.java,v 1.9 2005/07/08 19:54:56 cxh Exp $

     * selection interactor will be attached to many figures.
     */
    public void createInteraction() {
        // Create a selection drag-selector on the pane
        SelectionDragger selectionDragger = new SelectionDragger(graphicsPane);
        SelectionModel model = new BasicSelectionModel();
        SelectionInteractor s;
        DragInteractor d;


        // For each figure, create a selection interactor with
        // a drag interactor attached to it. Set a different

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     * smart enough to properly handle terminals.
     */
    public BasicEdgeController(GraphController controller) {
        _controller = controller;


        SelectionModel sm = controller.getSelectionModel();
        _interactor = new EdgeInteractor(sm);


        // Create and set up the manipulator for connectors
        ConnectorManipulator manipulator = new ConnectorManipulator();
        manipulator.setSnapHalo(4.0);

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                default:
                    throw new IllegalStateException(
                            "Cannot handle both ends of an edge being dragged.");
                }
            } catch (GraphException ex) {
                SelectionModel selectionModel = _controller.getSelectionModel();


                // If it is illegal then blow away the edge.
                if (selectionModel.containsSelection(c)) {
                    selectionModel.removeSelection(c);
                }


                removeEdge(edge);
                throw ex;
            }

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     * Create a new basic controller with default node and edge interactors.
     */
    public BasicNodeController(GraphController controller) {
        _controller = controller;


        SelectionModel sm = controller.getSelectionModel();
        _interactor = new NodeInteractor(controller, sm);
    }

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    public void actionPerformed(ActionEvent e) {
        JGraph jgraph = (JGraph) e.getSource();
        GraphPane graphPane = jgraph.getGraphPane();
        GraphController controller = graphPane.getGraphController();
        GraphModel graphModel = controller.getGraphModel();
        SelectionModel model = controller.getSelectionModel();
        Object[] selection = model.getSelectionAsArray();
        Object[] userObjects = new Object[selection.length];


        // First remove the selection.
        for (int i = 0; i < selection.length; i++) {
            userObjects[i] = ((Figure) selection[i]).getUserObject();
            model.removeSelection(selection[i]);
        }


        // Remove all the edges first, since if we remove the nodes first,
        // then removing the nodes might remove some of the edges.
        for (int i = 0; i < userObjects.length; i++) {

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     *  The resulting topology is the same in the sense
     *  of deep connectivities.
     */
    public void createHierarchy() {
        GraphController controller = _getGraphController();
        SelectionModel model = controller.getSelectionModel();
        AbstractBasicGraphModel graphModel = (AbstractBasicGraphModel) controller
                .getGraphModel();
        Object[] selection = model.getSelectionAsArray();


        // A set, because some objects may represent the same
        // ptolemy object.
        HashSet namedObjSet = new HashSet();
        HashSet nodeSet = new HashSet();

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    public void delete() {
        // Note that we previously a delete was handled at the model level.
        // Now a delete is handled by generating MoML to carry out the delete
        // and handing that MoML to the parser
        GraphController controller = _getGraphController();
        SelectionModel model = controller.getSelectionModel();
        AbstractBasicGraphModel graphModel = (AbstractBasicGraphModel) controller
                .getGraphModel();
        Object[] selection = model.getSelectionAsArray();


        // Generate the MoML to carry out the deletion
        StringBuffer moml = _deleteMoML(graphModel, selection, model);


        // Next process the deletion MoML. This should be the large majority

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     *  @return The set of selected objects.
     */
    protected HashSet _getSelectionSet() {
        GraphController controller = _getGraphController();
        GraphModel graphModel = controller.getGraphModel();
        SelectionModel model = controller.getSelectionModel();
        Object[] selection = model.getSelectionAsArray();


        // A set, because some objects may represent the same
        // ptolemy object.
        HashSet namedObjSet = new HashSet();
        HashSet nodeSet = new HashSet();

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        BasicGraphController graphController = (BasicGraphController) _controller
                .getController();
        BasicGraphFrame frame = graphController.getFrame();


        SelectionModel model = graphController.getSelectionModel();
        AbstractBasicGraphModel graphModel = (AbstractBasicGraphModel) graphController
                .getGraphModel();
        Object[] selection = model.getSelectionAsArray();
        Object[] userObjects = new Object[selection.length];


        // First get the user objects from the selection.
        for (int i = 0; i < selection.length; i++) {
            userObjects[i] = ((Figure) selection[i]).getUserObject();

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        // NOTE: This dance is so that the
        // doubleClickInteractor gets the events before the drag interactor.
        interactor.setDragInteractor(interactor.getDragInteractor());


        // Set the selection model to allow this to be independently selected.
        SelectionModel sm = controller.getSelectionModel();
        interactor.setSelectionModel(sm);
    }

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