GXT 2.2-MessageBox按钮常数 [英] GXT 2.2 - MessageBox button constants

问题描述

这是一个有关如何检测在MessageBox/Dialog中单击哪个按钮的问题. 仅GXT 2.1或2.2. 请不要使用GXT 3进行回答.

This is a question on how to detect which button was clicked in the MessageBox/Dialog. GXT 2.1 or 2.2 only. Please do not answer using GXT 3.

理想情况下，这就是我可以进行确认对话框的方式.

Ideally, this is how I could do a confirm dialog.

final MessageBox box = MessageBox.confirm(
  "Confirm kill avatar",
  "Please remove " + getAvatar().getName(),
  new Listener<MessageBoxEvent>()
  {
    @Override
    public void handleEvent(MessageBoxEvent be)
    {
      Button clicked = be.getButtonClicked();
      if (clicked == box.getDialog().getButtonById("yes"))
        deleteAvatar();
      else
       Info.display("Action cancelled");
    }
  });

• 但是.由于尚未定义box，box.getDialog()将为NPE，
• 并且编译器通过破坏未初始化的框"来抢占这一点，
• 并且不能初始化，因为box必须是最终的
• 框必须是最终的，因为它在anon Listener类中使用.
• However. since box has not been defined, box.getDialog() would be NPE,
• and compiler preempts that by croaking "box not initialised",
• and cannot initialise because box has to be final,
• box has to be final because it is used in the anon Listener class.

相反，我必须使用按钮文本来比较按钮.这不是i18n友好的.不好的做法.

Instead, I have to compare buttons using the button text. Which is not i18n friendly. Very bad practice.

    @Override
    public void handleEvent(MessageBoxEvent be)
    {
      Button clicked = be.getButtonClicked();
      if (clicked.getText().equals("Yes")))
        deleteAvatar();
      else
       Info.display("Action cancelled");
    }

在GXT 2.2中，这是推荐的方法吗?还是有一种更好的方法来检测按钮是否被按下，对i18n友好?

In GXT 2.2, is this the recommended way? Or is there a better way to detect button being pressed, i18n-friendly?

我应该比较按钮而不是按钮的文本.

I SHOULD compare buttons NOT the text of the buttons.

推荐答案

您可以使用:

if (Dialog.CANCEL.equals(be.getButtonClicked().getItemId())) {

    //do action 

}

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