Java关闭辅助功能,Java Swing Shift + F10辅助功能

Per accessibility requirements, Shift+F10 is supposed to open right-click context menus.

In Swing, one approach is to just add the key binding to every component you make. However, I've experimented with extending the EventQueue to handle all Shift+F10 presses. In particular, I've overridden dispatchEvent(AWTEvent) to convert Shift+F10 KeyEvents into right-click mousePresses:

protected void dispatchEvent(AWTEvent event) {

if (event instanceof KeyEvent) {

KeyEvent ev = (KeyEvent) event;

if ((ev.getKeyCode() == KeyEvent.VK_F10) &&

(ev.getModifiersEx() & InputEvent.SHIFT_DOWN_MASK) > 0) {

KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager();

Component comp = kfm.getFocusOwner();

Point mouse = MouseInfo.getPointerInfo().getLocation();

SwingUtilities.convertPointFromScreen(mouse, comp);

eventToDispatch = new MouseEvent(comp,

MouseEvent.MOUSE_RELEASED, ev.getWhen(), 0, mouse.x, mouse.y,

1, true);

}

}

}

However, this prevents Shift+F10 from being able to close any JPopupMenus that get launched. Any idea if this solution is workable, or are there better ways to accomplish meeting this requirement?

解决方案

ActionListener actionListener = new ActionListener() {

public void actionPerformed(ActionEvent actionEvent) {

try {

int dotPosition = textField.getCaretPosition();

Rectangle popupLocation = textField

.modelToView(dotPosition);

popup.show(textField, popupLocation.x, popupLocation.y);

} catch (BadLocationException badLocationException) {

System.out.println("Oops");

}

}

};

KeyStroke keystroke = KeyStroke.getKeyStroke(KeyEvent.VK_F10,

InputEvent.SHIFT_MASK);

textField.registerKeyboardAction(actionListener, keystroke,

JComponent.WHEN_FOCUSED);