@Override public void pack(boolean width, boolean height) { if (!isVisible() || (!width && !height)) return; Dimension size = getSize(); Dimension prefSize = myContent.computePreferredSize(); if (width) { size.width = prefSize.width; } if (height) { size.height = prefSize.height; } size = computeWindowSize(size); final Window window = SwingUtilities.getWindowAncestor(myContent); window.setSize(size); }