使用注册表管理Swing操作 [英] Managing Swing Actions with a Registry

问题描述

通常，当我创建Swing（或任何UI）应用程序时，我会在菜单项和按钮上显示各种操作。我通常创建一个动作注册表并将动作存储在那里，然后当发生某些事情时，我会根据应用程序的状态在注册表中禁用/启用动作。
我不会称自己是一个狂热的Swing开发人员，虽然我知道我的方法很好，但这是一个非常典型的管理动作的模式吗？或者有更标准的方法吗？

Typically when I'm creating a Swing (or any UI) application, I have various Actions that appear on menu items and buttons. I usually create an action registry and store the actions in there and then when certain things occur, I disable/enable actions in the registry based on the state of the application. I wouldn't call myself an avid Swing developer, although I know my way around it well enough, but is this a pretty typical pattern for managing Actions? Or is there a more standard way of doing it?

谢谢，

杰夫

推荐答案

杰夫，你的方法似乎是一个很好的方法。我做同样的事情。我调用注册表ActionHandler，它看起来像这样：

Jeff, your approach seems like a good approach. I do the same thing. I call the registry ActionHandler and it looks like this:

import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.ImmutableClassToInstanceMap;

import javax.swing.*;
import javax.swing.text.DefaultEditorKit;

public class ActionHandler {

    private static final ClassToInstanceMap<Action> actionMap =
            new ImmutableClassToInstanceMap.Builder<Action>().
                    put(DefaultEditorKit.CutAction.class, new DefaultEditorKit.CutAction()).
                    put(DefaultEditorKit.CopyAction.class, new DefaultEditorKit.CopyAction()).
                    put(DefaultEditorKit.PasteAction.class, new DefaultEditorKit.PasteAction()).
                    put(RefreshAction.class, new RefreshAction()).
                    put(MinimizeAction.class, new MinimizeAction()).
                    put(ZoomAction.class, new ZoomAction()).
                    build();

    public static Action getActionFor(Class<? extends Action> actionClasss) {
        return actionMap.getInstance(actionClasss);
    }
}

现在禁用，比如ZoomAction，我用

Now to disable, say ZoomAction, I use

   ActionHandler.getActionFor(ZoomAction.class).setEnabled(false);

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