void (@NotNull AnActionEvent e) { TreeModel treeModel = myTree.getModel(); Object root = treeModel.getRoot(); if (!(root instanceof CheckedTreeNode)) { return; } if (!myShowSelectedRowsOnly) { myTree.setNodeState((CheckedTreeNode)root, true); } else { myShowSelectedRowsOnly = false; reloadTree(); myTree.setNodeState((CheckedTreeNode)root, true); myShowSelectedRowsOnly = true; } }