JTable-调整行大小时调整行标题

时间:2013-12-30 12:02:14

标签: java swing jtable rowheader

我有gridJTable),看起来像MS Excel的网格。我想允许用户调整行和列的大小。对于列,我只是使用了这个:

grid.getTableHeader().setResizingAllowed(true);

对于行,我从here获取了TableRowResizer类,我正在使用这个类:

new TableRowResizer(grid);

这很好用。但是,我有一个问题:在调整行大小时,行标题也不会调整大小。

enter image description here

以下是我如何制作行标题:

    AbstractListModel lm = null;
    lm = new TableListModel(grid);
    final JList list = new JList(lm);
    list.setFixedCellWidth(60);         
    list.setFixedCellHeight(grid.getRowHeight());
    list.setCellRenderer(new TableRowHeaderRenderer(grid));
    list.setBackground(grid.getTableHeader().getBackground());
    scrollPane.setRowHeaderView(list);

这是TableRowHeaderRenderer类:

    class TableRowHeaderRenderer extends JLabel implements ListCellRenderer {   

        private JTable table;

        public TableRowHeaderRenderer(JTable table)
        {
            this.table = table;
            JTableHeader header = table.getTableHeader();
            setOpaque(true);
            setBorder(BorderFactory.createEtchedBorder());
            setHorizontalAlignment(CENTER);
            setForeground(header.getForeground());
            setBackground(header.getBackground());
            setFont(header.getFont());
        }

        public Component getListCellRendererComponent(JList list, 
        Object value, int index, boolean isSelected, boolean cellHasFocus) 
        {
            Color bg = UIManager.getColor("TableHeader.background");
            int selectedrow =  table.getSelectedRow();
            if (selectedrow==index) bg = new Color(107, 142, 35);
            setBackground(bg);
            setText("" + Grid.getRowName(index));
            return this;
        }
        }

这是TableListModel类:

    class TableListModel extends AbstractListModel{
        private JTable mytable;

        public TableListModel(JTable table) {
            super();
            mytable = table;
            }

        public int getSize() {
            return mytable.getRowCount();
            }

        public Object getElementAt(int index) {
            return "" + index;
            }
        }

1 个答案:

答案 0 :(得分:2)

查看Row Number Table。它使用JTable(而不是JList)来呈现行号。因此,您可以将行高保持与主表同步。

但是,当主表的行高更改时,我无法自动重绘行标题,因为更改单个行高时不会触发任何事件。因此,您还需要修改调整大小代码,如下所示:

table.setRowHeight(resizingRow, newHeight);
JScrollPane scrollPane = (JScrollPane)SwingUtilities.getAncestorOfClass(JScrollPane.class, table);
scrollPane.getRowHeader().repaint();