in src/main/java/idea/plugin/psiviewer/view/PropertySheetPanel.java [143:154]
private void packColumn(JTable table, int colIndex, int margin)
{
int width = Math.max(getColumnHeaderWidth(table, colIndex),
getColumnCellWidth(table, colIndex));
width += 2 * margin;
TableColumn column = table.getColumnModel().getColumn(colIndex);
column.setPreferredWidth(width);
column.setMinWidth(colIndex==0?width:0);
column.setMaxWidth(colIndex==0?width:Integer.MAX_VALUE);
}