Examples with LayoutManager org.opennms.features.topology.app.internal.support.LayoutManager used on opensource projects

Example 1 with LayoutManager

use of org.opennms.features.topology.app.internal.support.LayoutManager in project opennms by OpenNMS.

the class ManualLayoutAlgorithm method updateLayout.

@Override
public void updateLayout(Graph graph) {
    final LayoutEntity layoutEntity = layoutManager != null ? layoutManager.loadLayout(graph) : null;
    if (layoutEntity != null) {
        // if we have a persisted layout, we apply it ...
        final Layout layout = graph.getLayout();
        final Collection<Vertex> vertices = graph.getDisplayVertices();
        for (Vertex vertex : vertices) {
            PointEntity pointEntity = layoutEntity.getPosition(vertex.getNamespace(), vertex.getId());
            layout.setLocation(vertex, new Point(pointEntity.getX(), pointEntity.getY()));
        }
    } else {
        // otherwise we apply the manual layout ...
        final Collection<Vertex> vertices = graph.getDisplayVertices();
        final Layout layout = graph.getLayout();
        final long notLayedOutCount = vertices.stream().filter(v -> {
            Point location = layout.getLocation(v);
            return location.getX() == 0 && location.getY() == 0;
        }).count();
        final long noVertexLocationCount = vertices.stream().filter(v -> {
            boolean hasNoX = v.getX() == null || v.getX().intValue() == 0;
            boolean hasNoY = v.getY() == null || v.getY().intValue() == 0;
            return hasNoX && hasNoY;
        }).count();
        // manually apply the Grid Layout
        if (notLayedOutCount == vertices.size() && noVertexLocationCount == vertices.size()) {
            new GridLayoutAlgorithm().updateLayout(graph);
        } else if (noVertexLocationCount != vertices.size()) {
            // If we have at least one vertex with coordinates != (0,0), we apply them to the layout
            for (Vertex vertex : vertices) {
                layout.setLocation(vertex, new Point(vertex.getX(), vertex.getY()));
            }
        } else {
            // This is only done when the user explicitly saves the layout
            for (Vertex vertex : vertices) {
                Point p = layout.getLocation(vertex);
                layout.setLocation(vertex, p);
            }
        }
    }
}