void (Container parent) { Dimension size = getSize(); mainPanel.setSize(size); mainPanel.validate(); if (IdeEventQueue.getInstance().getTrueCurrentEvent().getID() == MouseEvent.MOUSE_DRAGGED) { Dimension preferredSize = preferredLayoutSize(null); if (preferredSize.width != size.width) { UISettings.getInstance().setMaxLookupWidth(Math.max(500, size.width)); } int listHeight = myList.getLastVisibleIndex() - myList.getFirstVisibleIndex() + 1; if (listHeight != myList.getModel().getSize() && listHeight != myList.getVisibleRowCount() && preferredSize.height != size.height) { myLookup.getPresentation().setMaxVisibleItemsCount(listHeight); } } myList.setFixedCellWidth(myScrollPane.getViewport().getWidth()); }