//复合鼠标控制器用来建构一个消息处理链
//消息在消息链中被各个控制器处理
public override HandleResult handleMouseEvent(MouseInputEvent e)
{
HandleResult result = HandleResult.Pending;
if (m_current_sub != null)//当前和默认子控制器都可以为null,即没有消息链
{
result = m_current_sub.handleMouseEvent(e); //先使用当前子控制器处理消息
if (result == HandleResult.Leave)
m_current_sub = m_default_sub; //当前子控制器退出之后设置为默认子控制器
else if (result == HandleResult.Done)
return result;
}
result = base.handleMouseEvent(e);
return result;
}
public override HandleResult handleKeyboardEvent(KeyboardInputEvent e)
{
HandleResult result = HandleResult.Pending;
if (m_current_sub != null)
{
result = m_current_sub.handleKeyboardEvent(e);
if (result == HandleResult.Leave)
m_current_sub = m_default_sub;
else if (result == HandleResult.Done)
return result;
}
result = base.handleKeyboardEvent(e);;
return result;
}