ActionListener 應該駐留在 MVC 架構中的什麼位置？

MVC and GUI: Where do ActionListeners belong according to MVC pattern?

As you mentioned, this question relates to the placement of ActionListeners in the Model-View-Controller (MVC) architectural pattern. Swing, used for creating GUIs in Java, doesn't strictly follow MVC.

1. View Responsibility:

Technically, the View should be responsible for maintaining ActionListeners attached totrols the Control the Actionls Controlnlerers attached totroller about actions taken. This way, the Controller is isolated from UI components and can work with any implemented View.

2. Dedicated View Listener:

Instead of of Instead.中，您也可以建立一個專門的View Listener。此偵聽器將描述視圖可能產生的操作，例如：

The Controller would then subscribe to the View via this listener, and the View would call didPerformClose when the close button is pressed.

public interface MainViewListener {
    void didPerformClose(MainView mainView);
}

Managing Inter-Layer 。 others.

Updated Example:

Login View Example with Loose Coupling:

Conider a login. and LoginView have specific responsibilities:

CredentialsView:

Gathers credentials (username and password)

LoginView:

• Manages the CredentialsView
• Manages the CredentialsView

Dismisses the view on successful/failed authentication

By using interfaces for communication, both views and the controller can be easily replaced or updated without breaking the Action. Placement:

• In the updated example, the ActionListeners for the authenticate and cancel buttons are still in the LoginView. However, the LoginView acts as both the controller for the Credviews and Controller. approach simplifies the logic while maintaining a clear separation of responsibilities.
• In Conclusion:

• ActionListeners應該由View維護，通知Controller動作。
• 層之間的通訊應該透過介面來促進鬆散耦合。
• 仔細設計視圖職責，控制器職責和層間通訊有助於維護 MVC 模式的完整性。

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