摇摆-如何抓住焦点*现在*?

如何指示Swing组件获取焦点 requestFocus() 似乎不是马上就派出去的。

理想情况下,我希望这样(从EDT运行):

textInput.requestFocusInWindow();
System.out.println(textInput.hasFocus());

true .

下面是SSCCE。注意事项/要求:

2. 当我在C2栏中键入一个字母时,编辑就开始了。复合编辑器中的文本组件获得焦点。它需要键入启动编辑器的字母。这一点的实现被标注为注释“技巧”。
3. 文本字段是第三方编辑器,其焦点侦听器会干扰我的代码。这里模拟成 selectAll() .

目前发送的顺序是:在文本组件中键入字母,然后发送焦点侦听器。然后下一个字母被正确发送,因为它是文本字段有焦点。

我需要它将焦点设置在文本组件上,分派焦点侦听器,然后将关键事件传递给它。

public class JTableIssue extends JFrame {
    public JTableIssue() {
        JTable table = new JTable(new Object[][] {
                { "Apple", "Orange", "Strawberry" },
                { "Pineapple", "Orange", "Zergz" } }, new Object[] { "C1",
                "C2", "C3" });
        table.getColumn("C2").setCellEditor(new MyEditor());
        add(new JScrollPane(table));
        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public static void main(String[] args) {
        new JTableIssue().setVisible(true);
    }
}

class MyEditor extends AbstractCellEditor implements TableCellEditor {
    MyTextField textField = new MyTextField();
    JPanel panel;

    MyEditor() {
        panel = new JPanel(new BorderLayout()){
            // Trick: Pass all key typed to text field
            @Override
            protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,
                    int condition, boolean pressed) {
                if (ks.getKeyEventType() == KeyEvent.KEY_TYPED) {
                    textField.processKeyBinding(ks, e, condition, pressed);
                }
                return super.processKeyBinding(ks, e, condition, pressed);
            }
        };
        textField.addFocusListener(new FocusAdapter() {
            @Override
            public void focusGained(FocusEvent e) {
                textField.selectAll();
            }
        });
        panel.add(textField, BorderLayout.CENTER);
        // Trick: Pass focus to text field when editor is added to table
        panel.addAncestorListener(new AncestorListener() {
            public void ancestorRemoved(AncestorEvent event) {
            }

            public void ancestorMoved(AncestorEvent event) {
            }

            public void ancestorAdded(AncestorEvent event) {
                textField.requestFocus();
            }
        });
    }

    public Object getCellEditorValue() {
        return textField.getText();
    }

    public Component getTableCellEditorComponent(JTable table, Object value,
            boolean isSelected, int row, int column) {
        textField.setText(value.toString());
        return panel;
    }
}

class MyTextField extends JTextField {
    // Trick: "public"
    @Override
    public boolean processKeyBinding(javax.swing.KeyStroke ks,
            java.awt.event.KeyEvent e, int condition, boolean pressed) {
        return super.processKeyBinding(ks, e, condition, pressed);
    };
}