GWT 2.x $输入功能 [英] GWT 2.x $entry function

问题描述

找不到关于此功能的任何开发者信息。我只知道建议使用这个 $ entry 函数将JSNI JavaScript调用包装到Java方法中。我发现它捕获异常，所以Java代码可以处理它们。如果你想确切地知道发生了什么，看看 com。它是一切吗？

google.gwt.core.client.impl.Impl.entry（JavaScript对象jsFunction）。

这个函数（至少在GWT 2.2.0 ）主要调用 entry0（Object jsFunction，Object thisObj，Object arguments），它执行以下操作：

• 首先，它刷新由 Scheduler.scheduleEntry（）


• 计划的所有内容然后确保执行如果存在这样的处理程序，则可以在try块中将jsFunction转发给 GWT.getUncaughtExceptionHandler（）。
  
• 最后，它会刷新由 Scheduler.scheduleFinally（）

Cannot find any developer information about this function. I just know that it's suggested to wrap JSNI JavaScript calls to Java methods with this $entry function. I found that it catches exceptions so Java code could handle them. Is it all it does?

解决方案

If you want to know exactly what happens, look into com.google.gwt.core.client.impl.Impl.entry(JavaScriptObject jsFunction).

This function (at least in GWT 2.2.0) mainly calls entry0(Object jsFunction, Object thisObj, Object arguments), which does the following:

• First, it flushes anything that has been scheduled by Scheduler.scheduleEntry()
• Then it makes sure to execute the jsFunction in a try block, to forward Exceptions to GWT.getUncaughtExceptionHandler(), if there is such a handler.
• Finally, it flushes anything that has been scheduled by Scheduler.scheduleFinally()

这篇关于GWT 2.x $输入功能的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！