Layer.java 文件源码

/**
 * Fire a component event to the Layer component listeners, with the palette
 * as the component, letting them know if it's visible or not.
 */
public void firePaletteEvent(ComponentEvent event) {
    if (localHackList == null) {
        return;
    }

    palette = (Container) event.getSource();
    int eventType = event.getID();
    for (ComponentListener listener : localHackList) {
        if (eventType == ComponentEvent.COMPONENT_HIDDEN) {
            listener.componentHidden(event);
        } else if (eventType == ComponentEvent.COMPONENT_SHOWN) {
            listener.componentShown(event);
        }
    }

    if (eventType == ComponentEvent.COMPONENT_HIDDEN) {
        palette = null;
    }
}