Canvas.java 文件源码

/**
 * Removes components that is only used when in game.
 */
public void removeInGameComponents() {
    // remove listeners, they will be added when launching the new game...
    KeyListener[] keyListeners = getKeyListeners();
    for (KeyListener keyListener : keyListeners) {
        removeKeyListener(keyListener);
    }

    MouseListener[] mouseListeners = getMouseListeners();
    for (MouseListener mouseListener : mouseListeners) {
        removeMouseListener(mouseListener);
    }

    MouseMotionListener[] mouseMotionListeners = getMouseMotionListeners();
    for (MouseMotionListener mouseMotionListener : mouseMotionListeners) {
        removeMouseMotionListener(mouseMotionListener);
    }

    for (Component c : getComponents()) {
        removeFromCanvas(c);
    }
}