Examples of com.vaadin.event.dd.acceptcriteria.ServerSideCriterion

com.vaadin.event.dd.acceptcriteria.ServerSideCriterion

Parent class for criteria which are verified on the server side during a drag operation to accept/discard dragged content (presented by {@link Transferable}).

Subclasses should implement the {@link AcceptCriterion#accept(com.vaadin.event.dd.DragAndDropEvent)} method.

As all server side state can be used to make a decision, this is more flexible than {@link ClientSideCriterion}. However, this does require additional requests from the browser to the server during a drag operation. @see AcceptCriterion @see ClientSideCriterion @since 6.3

        label.setSizeUndefined();
        pane1.addComponent(label);


        DragDropPane pane2 = new DragDropPane();
        pane2.setCaption("Pane2 (accept needs server side visit, check for \"Bar\")");
        final AcceptCriterion crit = new ServerSideCriterion() {
            /**
             * 
             */
            private static final long serialVersionUID = 1L;

        wrapper.setSizeFull();
        layout.setSizeFull();
        setWidth("450px");
        setHeight("150px");


        final ServerSideCriterion serverSideCriterion = new ServerSideCriterion() {


            @Override
            public boolean accept(DragAndDropEvent dragEvent) {
                Transferable transferable = dragEvent.getTransferable();
                if (transferable instanceof TransferableImpl) {

Examples of com.vaadin.event.dd.acceptcriteria.ServerSideCriterion

Related Classes of com.vaadin.event.dd.acceptcriteria.ServerSideCriterion