如何使用GWT设置和/或处理onload事件 [英] How do I setup for and/or handle onload event with GWT

问题描述

这是一个非常基本的问题，但是我无法通过Google或这个网站找到任何关于如何做到这一点的事情，这真是令人沮丧，因为我已经通过了GWT教程。

This has to be a pretty basic question but I cannot for the life of me find anything via Google or this site about how to do this and it's really frustrating because I've gone through the GWT tutorial.

我正在尝试将一个JavaScript项目转换为GWT。现在我正在尝试将转换为GWT等效的东西。我看过RootPanel，看不到任何东西。

I'm trying to convert a javascript project I have to GWT. Right now I am trying to convert "" to something GWT equivalent. I've looked at RootPanel and I can't see anything.

显然，我在GWT中缺少一些基本的东西？

Obviously I'm missing something fundamental in GWT ?!

推荐答案

GWT中的大部分小部件和面板都实现了 HasAttachHandlers 界面。向这些小部件/面板添加一个AttachEvent.Handler相当于定义一个运行onload的函数。

Most widgets and panels in GWT implements the HasAttachHandlers interface. Adding an AttachEvent.Handler to these widgets/panels is equivalent to defining a function to run onload.

一个例子：

FlowPanel mainPanel = new FlowPanel();
mainPanel.addAttachHandler(new AttachEvent.Handler() {

  @Override
  public void onAttachOrDetach(AttachEvent event) {
    // do something
  }
});

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