Package com.vaadin.event.dd.acceptcriteria

Examples of com.vaadin.event.dd.acceptcriteria.Not


            this.layout = layout;
        }

        @Override
        public AcceptCriterion getAcceptCriterion() {
            return new Not(SourceIsTarget.get());
        }
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                setDropHandler(new DropHandler() {

                    @Override
                    public AcceptCriterion getAcceptCriterion() {
                        return new Not(SourceIsTarget.get());
                    }

                    @Override
                    public void drop(DragAndDropEvent dropEvent) {
                        File f = null;
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        tree.setDropHandler(new DropHandler() {
            @Override
            public AcceptCriterion getAcceptCriterion() {
                // Accept drops in the middle of container items
                // and below and above all items.
                return new Or(Tree.TargetItemAllowsChildren.get(), new Not(
                        VerticalLocationIs.MIDDLE));
            }

            @Override
            public void drop(DragAndDropEvent event) {
                // Wrapper for the object that is dragged
                DataBoundTransferable t = (DataBoundTransferable) event
                        .getTransferable();

                TreeTargetDetails target = (TreeTargetDetails) event
                        .getTargetDetails();

                // Get ids of the dragged item and the target item
                Object sourceItemId = t.getData("itemId");
                Object targetItemId = target.getItemIdOver();

                // On which side of the target the item was dropped
                VerticalDropLocation location = target.getDropLocation();

                HierarchicalContainer container = (HierarchicalContainer) tree
                        .getContainerDataSource();

                BeanItem<?> beanItem = null;
                if (sourceItemId instanceof BeanItem<?>) {
                    beanItem = (BeanItem<?>) sourceItemId;
                } else if (sourceItemId instanceof InventoryObject) {
                    beanItem = new BeanItem<InventoryObject>(
                            (InventoryObject) sourceItemId);
                }

                // Remove the item from the source container and
                // add it to the tree's container
                Container sourceContainer = t.getSourceContainer();
                sourceContainer.removeItem(sourceItemId);
                tree.addItem(beanItem);
                InventoryObject bean = (InventoryObject) beanItem.getBean();
                tree.setChildrenAllowed(beanItem, bean.isContainer());

                // Drop right on an item -> make it a child
                if (location == VerticalDropLocation.MIDDLE) {
                    tree.setParent(beanItem, targetItemId);
                } else if (location == VerticalDropLocation.TOP) {
                    Object parentId = container.getParent(targetItemId);
                    tree.setParent(beanItem, parentId);
                    container.moveAfterSibling(beanItem, targetItemId);
                    container.moveAfterSibling(targetItemId, beanItem);
                }

                // Drop below another item -> make it next
                else if (location == VerticalDropLocation.BOTTOM) {
                    Object parentId = container.getParent(targetItemId);
                    tree.setParent(beanItem, parentId);
                    container.moveAfterSibling(beanItem, targetItemId);
                }

                tree.setItemCaption(beanItem, bean.getName());
            }
        });

        // Have a table that allows dragging from
        final Table table = new Table("Inventory List");
        table.setDragMode(TableDragMode.ROW);

        // Initialize the table container
        ArrayList<InventoryObject> collection = new ArrayList<InventoryObject>();
        collection.add(new InventoryObject("Dummy Item", 0.0, false));
        final BeanItemContainer<InventoryObject> tableContainer = new BeanItemContainer<InventoryObject>(
                collection);
        table.setContainerDataSource(tableContainer);
        table.setVisibleColumns(new String[] { "name", "weight" });
        table.removeAllItems();

        // Allow the table to receive drops and handle them
        table.setDropHandler(new DropHandler() {
            @Override
            public AcceptCriterion getAcceptCriterion() {
                return new Not(VerticalLocationIs.MIDDLE);
            }

            @Override
            public void drop(DragAndDropEvent event) {
                // Wrapper for the object that is dragged
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