Question

我有一个简单的JTable，它显示来自另一个JTable的行的详细信息（以列格式）。这很好用。但是，有时连续的文本很长，因此用户最终不得不滚动而不是整齐。

如何将文本换行并允许行高改变以显示其中的所有文本。

以下是代码：

 table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
            @Override
            public void valueChanged(ListSelectionEvent e) {
                if (!e.getValueIsAdjusting()) {
                    int selectedRow = table.getSelectedRow();
                    DefaultTableModel newModel = new DefaultTableModel();
                    String rowName = "Row: " + selectedRow;
                    newModel.setColumnIdentifiers(new Object[]{rowName});
                    for (int i = 0; i < table.getModel().getColumnCount(); i++) {
                        newModel.addRow(new Object[]{table.getModel().getValueAt(selectedRow, i)});
                    }
                    JTable newTable = new JTable(newModel) {
                        /**
                         * 
                         */
                        private static final long serialVersionUID = 1L;

                        @Override
                        public Dimension getPreferredScrollableViewportSize() {
                            return new Dimension(140, 240);
                        }
                    };
                    newTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
                    newTable.setRowHeight(14, 30);
                    TableColumnAdjuster tcanewTable = new TableColumnAdjuster(newTable);        
                    tcanewTable.setColumnHeaderIncluded(true);
                    tcanewTable.setColumnDataIncluded(true);
                    tcanewTable.setOnlyAdjustLarger( true );
                    tcanewTable.setDynamicAdjustment( true );
                    tcanewTable.adjustColumns();

                    // Apply any custom renderers and editors
                    JOptionPane.showMessageDialog(frame, new JScrollPane(newTable),
                        rowName, JOptionPane.PLAIN_MESSAGE);
                }
            }
        });

Answer 1

您可以使用JTextArea作为表格中该列的TableCellRenderer来完成此操作。例如：

static class WordWrapCellRenderer extends JTextArea implements TableCellRenderer {
    WordWrapCellRenderer() {
        setLineWrap(true);
        setWrapStyleWord(true);
    }

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
        setText(value.toString());
        setSize(table.getColumnModel().getColumn(column).getWidth(), getPreferredSize().height);
        if (table.getRowHeight(row) != getPreferredSize().height) {
            table.setRowHeight(row, getPreferredSize().height);
        }
        return this;
    }
}

在表格中使用WordWrapCellRenderer：

table.getColumnModel().getColumn(columnIndex).setCellRenderer(new WordWrapCellRenderer());

Answer 2

这是接受答案的更新。

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getPreferredSize()

如何在JTable行内自动换行

2 个答案: