private void setUserInputEnabled(boolean enable, boolean convertToAscii) {
if (enable == isUserInputEnabled) return;
isUserInputEnabled = enable;
if (enable) {
if (null == mouseEventListener) {
mouseEventListener = new MouseEventListener(this, context);
}
addMouseListener(mouseEventListener);
addMouseMotionListener(mouseEventListener);
addMouseWheelListener(mouseEventListener);
setFocusTraversalKeysEnabled(false);
if (null == keyEventListener) {
keyEventListener = new KeyEventListener(context);
if (modifierButtonListener != null) {
keyEventListener.addModifierListener(modifierButtonListener);
}
}
keyEventListener.setConvertToAscii(convertToAscii);
addKeyListener(keyEventListener);
enableInputMethods(false);
} else {
removeMouseListener(mouseEventListener);
removeMouseMotionListener(mouseEventListener);
removeMouseWheelListener(mouseEventListener);
removeKeyListener(keyEventListener);
}
}
public void addModifierListener(ModifierButtonEventListener modifierButtonListener) {
this.modifierButtonListener = modifierButtonListener;
if (keyEventListener != null) {
keyEventListener.addModifierListener(modifierButtonListener);
}
}