表单元格编辑器问题

时间:2012-10-15 11:03:03

标签: java swing jtable keylistener tablecelleditor

我正在构建一个自定义表格单元格编辑器,以便在编辑期间调整行高。我有这个代码,但它没有调整单元格的大小,而是调整整个面板或框架的大小。当我尝试在单元格中输入字符时,主框架宽度会缩小到几个像素。 有谁能看到这个问题?

class MyTableCellEditor extends AbstractCellEditor implements TableCellEditor {

    MyTextpane component = new MyTextpane();
    MyTable table;
    private int row;
    private int col;

    public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected,
            int rowIndex, int vColIndex) {

        ((MyTextpane) component).setText((String) value);
        component.addKeyListener(new KeyListener1());
        this.table =(MyTable) table;
        this.row = rowIndex;
        this.col = vColIndex;
        return component;
    }

    public Object getCellEditorValue() {
        return ((MyTextpane) component).getText();
    }

    public class KeyListener1 implements KeyListener {

        @Override
        public void keyTyped(KeyEvent ke) {
        }

        @Override
        public void keyPressed(KeyEvent ke) {
        }

        @Override
        public void keyReleased(KeyEvent ke) {
            adjustRowHeight(table, row, col);
        }
        private java.util.List<java.util.List<Integer>> rowColHeight = new ArrayList<java.util.List<Integer>>();
        private void adjustRowHeight(JTable table, int row, int column) {
        //The trick to get this to work properly is to set the width of the column to the
        //textarea. The reason for this is that getPreferredSize(), without a width tries
        //to place all the text in one line. By setting the size with the with of the column,
        //getPreferredSize() returnes the proper height which the row should have in
        //order to make room for the text.
        int cWidth = table.getTableHeader().getColumnModel().getColumn(column).getWidth();
        setSize(new Dimension(cWidth, 1000));
        int prefH = getPreferredSize().height;
        while (rowColHeight.size() <= row) {
            rowColHeight.add(new ArrayList<Integer>(column));
        }
        java.util.List<Integer> colHeights = rowColHeight.get(row);
        while (colHeights.size() <= column) {
            colHeights.add(0);
        }
        colHeights.set(column, prefH);
        int maxH = prefH;
        for (Integer colHeight : colHeights) {
            if (colHeight > maxH) {
                maxH = colHeight;
            }
        }
        if (table.getRowHeight(row) != maxH) {
            table.setRowHeight(row, maxH);
        }
    }

    }
}

2 个答案:

答案 0 :(得分:1)

have look at

  • 关于doLayout的答案(可以从CellEditor中解雇)

  • 或(超过使用TextUtils的舒适方式)@kleopatra关于getPreferredSize的评论

  • 这可能(非常)混淆用户,

  • 因为我想念JScrollPane,所以必须覆盖MaxSize,最大尺寸是高度&amp; JScrollPane的权重,否则CellEditor的一部分可以超出screeens边界.........,

  • 不要那样做,把JScrollPane放到JTextComponents中,覆盖CellEditor的PreferredSize,


一切都是错的,我的观点,

  • 使用JTextComponent创建应用程序模态弹出窗口(仅基于JDialog,因为JWindow不支持JTextComponent的输入),实现ESC键的KeyBindings,同样用于JDialog的丢失Fucus,然后可以在没有任何问题的情况下修改

放在那里Save JButton

  • 从保存按钮输出重定向到所选单元格,您无法从JTable中的应用程序模式中失去焦点

  • 内容应格式化,过滤,修改一个来自JTable的所有单元格的JDialog

答案 1 :(得分:1)

作为在编辑时调整行大小的替代方法,请考虑使用JTextArea的{​​{3}}。