Question

为了让应用更有条理，我在新课程中定义了例如Frame，然后是Panel或GridBagPanel，如：

class TestGridBagPanel extends GridBagPanel { }
class TestFrame extends MainFrame { 
   contents = new TestGridBagPanel
   reactions = new React // ??
}
class React extends WHAT??  { }

... // and so on and then called in top() method like this:

object TestApp extends SimpleSwingApplication {
  def top = new TestFrame { }
 }

我的问题是我无法知道Reaction类中extend的哪个Component，我必须从Buttons，TextFields和CheckBoxes收听。

Answer 1

你的React类应该是

class React extends PartialFunction[Event,Unit]{
    override def isDefinedAt(x: Event): Boolean = ...

    override def apply(e: Event): Unit = e match {
        case e: MouseDragged => {}
        case e: MousePressed => {}
    }
}

Scala - 扩展MainFrame（），GridBagPanel（）以及'反应'

1 个答案: