Java SWT：widgetSelected vs widgetDefaultSelected [英] Java SWT: widgetSelected vs widgetDefaultSelected

问题描述

例如，我想在用户点击按钮时执行某些操作。我用哪一个？文件似乎并不清楚。

更新

A快速测试显示Widget Selected被触发，但不是默认选择。

在 TasksView.main（）

  TasksView view = new TasksView（shell，SWT.None）; 
 TasksController controller = new TasksController（view）; 
  

在 TasksController

  public class TasksController extends ControllerAbstract {
 protected TasksView view; 
 
 public TasksController（TasksView view）{
 this.view = view; 
 view.addTaskListener（new AddTaskListener（））; 
} 
 
 protected class AddTaskListener implements SelectionListener {
 
 @Override 
 public void widgetDefaultSelected（SelectionEvent arg0）{
 System.out.println （默认选择）; 
 
} 
 
 @Override 
 public void widgetSelected（SelectionEvent arg0）{
 System.out.println（Widget Selected）; 
 
} 
 
} 
} 
  

btw，我是否正确地进行MVC？

解决方案

使用 widgetSelected 。事实上，更好的是简单地扩展 SelectionAdapter ，并且仅覆盖 widgetSelected 方法，并完全忽略 widgetDefaultSelected 。

For example I want to execute something when user clicks on a button. Which do I use? The documentation didn't appear to make it very clear

UPDATE

A quick test shows that Widget Selected is triggered but not Default Selected.

In TasksView.main()

TasksView view = new TasksView(shell, SWT.None);
TasksController controller = new TasksController(view);

In TasksController

public class TasksController extends ControllerAbstract {
    protected TasksView view;

    public TasksController(TasksView view) {
        this.view = view;
        view.addTaskListener(new AddTaskListener());
    }

    protected class AddTaskListener implements SelectionListener {

        @Override
        public void widgetDefaultSelected(SelectionEvent arg0) {
            System.out.println("Default Selected");

        }

        @Override
        public void widgetSelected(SelectionEvent arg0) {
            System.out.println("Widget Selected");

        }

    }
}

btw, Did I do MVC correctly?

解决方案

Use widgetSelected. In fact, all the better is to simply extend SelectionAdapter and only override the widgetSelected method and completely ignore widgetDefaultSelected.

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