@Override public boolean update(DnDEvent aEvent) { aEvent.setDropPossible(false); aEvent.hideHighlighter(); final Object object = aEvent.getAttachedObject(); if (object instanceof PackagingElementDraggingObject) { final DefaultMutableTreeNode parent = findParentCompositeElementNode(aEvent.getRelativePoint().getPoint(myTree)); if (parent != null) { final PackagingElementDraggingObject draggingObject = (PackagingElementDraggingObject) object; final PackagingElementNode node = getNode(parent); if (node != null && draggingObject.canDropInto(node)) { final PackagingElement element = node.getFirstElement(); if (element instanceof CompositePackagingElement) { draggingObject.setTargetNode(node); draggingObject.setTargetElement((CompositePackagingElement<?>) element); final Rectangle bounds = myTree.getPathBounds(TreeUtil.getPathFromRoot(parent)); aEvent.setHighlighting( new RelativeRectangle(myTree, bounds), DnDEvent.DropTargetHighlightingType.RECTANGLE); aEvent.setDropPossible(true); } } } } return false; }
@Override public boolean update(DnDEvent aEvent) { aEvent.hideHighlighter(); aEvent.setDropPossible(false, ""); Object attached = aEvent.getAttachedObject(); if (!(attached instanceof ChangeListDragBean)) return false; final ChangeListDragBean dragBean = (ChangeListDragBean) attached; if (dragBean.getSourceComponent() != ChangesListView.this) return false; dragBean.setTargetNode(null); RelativePoint dropPoint = aEvent.getRelativePoint(); Point onTree = dropPoint.getPoint(ChangesListView.this); final TreePath dropPath = getPathForLocation(onTree.x, onTree.y); if (dropPath == null) return false; ChangesBrowserNode dropNode = (ChangesBrowserNode) dropPath.getLastPathComponent(); while (!((ChangesBrowserNode) dropNode.getParent()).isRoot()) { dropNode = (ChangesBrowserNode) dropNode.getParent(); } if (!dropNode.canAcceptDrop(dragBean)) { return false; } final Rectangle tableCellRect = getPathBounds(new TreePath(dropNode.getPath())); if (fitsInBounds(tableCellRect)) { aEvent.setHighlighting( new RelativeRectangle(ChangesListView.this, tableCellRect), DnDEvent.DropTargetHighlightingType.RECTANGLE); } aEvent.setDropPossible(true); dragBean.setTargetNode(dropNode); return false; }