Examples with ILayoutNode org.eclipse.gmf.runtime.diagram.ui.services.layout.ILayoutNode used on opensource projects

Example 1 with ILayoutNode

use of org.eclipse.gmf.runtime.diagram.ui.services.layout.ILayoutNode in project elk by eclipse.

the class ElkLayoutProvider method layoutLayoutNodes.

@Override
@SuppressWarnings("rawtypes")
public Runnable layoutLayoutNodes(final List layoutNodes, final boolean offsetFromBoundingBox, final IAdaptable layoutHint) {
    // fetch general settings from preferences
    final boolean zoomToFit = Platform.getPreferencesService().getBoolean("org.eclipse.elk.core.ui", "org.eclipse.elk.zoomToFit", false, null);
    final boolean progressDialog = Platform.getPreferencesService().getBoolean("org.eclipse.elk.core.ui", "org.eclipse.elk.progressDialog", false, null);
    // determine the elements to process
    final Object diagramPart;
    if (layoutNodes.isEmpty()) {
        diagramPart = layoutHint.getAdapter(IGraphicalEditPart.class);
    } else {
        List<IGraphicalEditPart> partList = new ArrayList<IGraphicalEditPart>(layoutNodes.size());
        IGraphicalEditPart parent = (IGraphicalEditPart) layoutHint.getAdapter(IGraphicalEditPart.class);
        if (parent != null) {
            Iterator<?> nodeIter = layoutNodes.iterator();
            while (nodeIter.hasNext()) {
                ILayoutNode layoutNode = (ILayoutNode) nodeIter.next();
                IGraphicalEditPart editPart = findEditPart(parent, layoutNode.getNode());
                if (editPart != null) {
                    partList.add(editPart);
                }
            }
        }
        diagramPart = partList;
    }
    return new Runnable() {

        public void run() {
            DiagramLayoutEngine.invokeLayout(null, diagramPart, false, progressDialog, false, zoomToFit);
        }
    };
}

Example 2 with ILayoutNode

use of org.eclipse.gmf.runtime.diagram.ui.services.layout.ILayoutNode in project elk by eclipse.

the class ElkLayoutProvider method canLayoutNodes.

/**
 * {@inheritDoc}<br>
 * <br>
 * This method returns <code>true</code> only for {@link IGraphicalEditPart IGraphicalEditParts}
 * whose figures are visible and that contain at least a {@link ShapeNodeEditPart}, which is not
 * an {@link AbstractBorderItemEditPart} or an {@link AbstractImageEditPart}.<br>
 * <br>
 * In short, returns only true if the provided edit part contains children that can be layouted.
 */
@SuppressWarnings("rawtypes")
public boolean canLayoutNodes(final List layoutNodes, final boolean shouldOffsetFromBoundingBox, final IAdaptable layoutHint) {
    Object o = layoutHint.getAdapter(IGraphicalEditPart.class);
    if (!(o instanceof IGraphicalEditPart)) {
        return false;
    }
    final IGraphicalEditPart parent = (IGraphicalEditPart) o;
    // computing layout on the element wouldn't make sense otherwise
    if (layoutNodes.isEmpty()) {
        return Iterables.any((List<?>) parent.getChildren(), new Predicate<Object>() {

            public boolean apply(final Object o) {
                return o instanceof ShapeNodeEditPart && !(o instanceof AbstractBorderItemEditPart) && !(o instanceof AbstractImageEditPart);
            }
        });
    } else {
        return Iterables.any((List<?>) layoutNodes, new Predicate<Object>() {

            public boolean apply(final Object o) {
                ILayoutNode layoutNode = (ILayoutNode) o;
                IGraphicalEditPart editPart = findEditPart(parent, layoutNode.getNode());
                return editPart instanceof ShapeNodeEditPart && !(editPart instanceof AbstractBorderItemEditPart) && !(editPart instanceof AbstractImageEditPart);
            }
        });
    }
}