具有许多ActionListeners的MVC模式

问题描述

我正在使用MVC设计模式编写GUI程序。我有一个关于使用ActionListeners的问题。

I am writing program with GUI using MVC design pattern. I have a question concerning using ActionListeners.

根据MVC模式，所有ActionListener都应该包含在Controller中。通常情况下，我认为它们将被实现为内部类，如。

According to the MVC pattern, all of the ActionListeners should be included into Controller. Normally, as I believe they will be implemented into inner classes like.

然而，如果有许多按钮等，将这些内部类移动到单独的文件是个好主意在同一个包裹？我知道他们不再是内班了，所以这是一个好的设计吗？因为我需要使用Controller类中的局部变量，我可以简单地将它们设置为默认访问吗？

However in case of many buttons etc. is it a good idea to move those inner classes to separate files in the same package? I know that they will not be inner classes any more, so is it a good design? And as I would need to use local variable from the Controller class can I simply set them a default access?

控制器类：

public class Controller{

    GoogleMaps gMaps = null; // model
    GUI gui = null;          // view

    public Controller(GoogleMaps gMaps, GUI gui) {
        super();
        this.gMaps = gMaps;
        this.gui = gui;

        this.gui.addButtonDownListener(new ButtonDownListener(this));
    }
}

ButtonDownLister类：

ButtonDownLister class:

class ButtonDownListener implements ActionListener{

    private BudgetController buttonDownListener;

    public ButtonDownListener(BudgetController buttonDownListener) {
        super();
        this.buttonDownListener = buttonDownListener;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // some ActionEvent handler
    }
}

推荐答案

可能不是完美的MVC，但你仍然可以拥有内部类ActionListeners只是调用实际执行工作的控制器。

Might not be perfect MVC, but you can still have inner class ActionListeners that just make calls to the controller that actually carries out the work.

所以 //一些ActionEvent处理程序仍然是在财务主任中完成。

So the // some ActionEvent handler is still completed in the Controller.

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