如何在JTable行内自动换行 [英] How to word wrap inside a JTable row

问题描述

我有一个简单的JTable，它显示了另一个JTable中行的详细信息(以列格式).这很好用.但是，有时一行中的文本很长，因此用户最终不得不滚动查看哪一个不是整齐的.

I have a simple JTable that shows the details (in column format) of a row from another JTable. This works nicely. However, sometimes the text in a row is very long so the user ends up having to scroll across which isnt neat.

如何将文本包装成一行，并允许行高更改以显示其中的所有文本.

How can I wrap the text in a row and allow the row height to change to show all the text in it.

这是代码:

 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);
                }
            }
        });

推荐答案

您可以通过将JTextArea用作表中该列的TableCellRenderer来实现此目的.例如:

You can accomplish this by using a JTextArea as a TableCellRenderer for that column in your table. For example:

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;
    }
}

要在表中使用WordWrapCellRenderer:

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

这篇关于如何在JTable行内自动换行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！