void (boolean groupByPackages, @Nullable Pair<PackageSetBase, NamedScopesHolder> filter, boolean showOnlyFilteredItems) { for (int i = getChildCount() - 1; i >= 0; i--) { final TreeNode node = getChildAt(i); if (node instanceof Disposable) { Disposer.dispose((Disposable)node); } } removeAllChildren(); if (groupByPackages) { buildPackages(); acceptFilter(filter, showOnlyFilteredItems); } else { buildFiles(filter, showOnlyFilteredItems); } setTreeModel(myTreeModel); if (myTreeModel != null) { myTreeModel.nodeStructureChanged(this); } }