Google Sketchup 插件的 Javascript 事件循环/消息泵
我正在开发一个使用 Ruby API 编写的 Google Sketchup 插件。此 API 中有一个 WebDialog 类，可用于呈现HTML 并在插件代码的 WebDialog 和 Ruby 端之间移动数据。我正在使用此类为我的插件构建 UI。
数据从 WebDialog 异步发送到 Ruby 端。由于文档不合格，我最初并没有意识到这一点，现在我已经开始使用我的插件了，它开始给我带来一些问题。具体来说：当从WebDialog向Ruby端进行多次连续调用时，仅执行最后一次调用。因此，我显然需要设计某种“桥梁”来防止从 WebDialog 到 Ruby 端的调用丢失——我认为，这基本上是一个“事件循环”或“消息泵”系统。
我的问题是我不知道如何做到这一点。我希望有人能为我提供某种资源，为这样的系统如何工作奠定一个框架——需要什么样的检查、执行的顺序等等。我知道这可能是一项非常复杂的任务，但我只需要一些基本的东西：基本上，一种在我向 Ruby 发送请求时使 Javascript 停止的方法，直到我得到我需要的数据为止，并处理可能出现的任何潜在错误。作物。
任何帮助将非常感激！
I'm working on a plugin for Google Sketchup that is written using the Ruby API. Within this API is a WebDialog class which one can use to render HTML and move data between the WebDialog and the Ruby side of the plugin code. I'm using this class to build a UI for my plugin.
Data is sent from the WebDialog to the Ruby side asynchronously. Due to subpar documentation I was not initially aware of this and now that I'm a ways into my plugin it's began to create some problems for me. Specifically: when multiple successive calls are made from the WebDialog to the Ruby side, only the last call is executed. So, I clearly need to devise some sort of "bridge" which will prevent calls from the WebDialog to the Ruby side from getting lost -- which is, I think, basically an "event loop" or "message pump" system.
My problem is that I haven't a good idea of how to do this. What I'm hoping is that someone can provide me with some sort of resource that lays out a framework for how such a system should work -- what sort of checks are needed, the sequence in which they're performed, etc. I know this can be a terrifically complex task, but I only need something basic: basically, a way of making Javascript stop when I send a request to Ruby, not proceeding until I get the data I need back, and dealing with any potential errors that may crop up.
Any help would be very much appreciated!
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我在 WebDialog 类上花费了大量时间。我计划写一个这样的泵，但我发现我可以用不同的方式来做，并获得更可靠的结果。
（我的 WebDialog 发现：http://forums.sketchucation.com/viewtopic。 php?f=180&t=23445 )
替代方法
SketchUp > JavaScript
我的替代方法是我没有尝试将数据从 WebDialog 推送到 Ruby。但相反，Ruby 泵送了 WebDialog，因为
Webdialog.execute_script是同步的。我向 WebDialog 发送一条带有查询的命令。然后 Javascript 对其进行处理并将结果放入隐藏的 INPUT 元素中，然后我使用“WebDialog.get_element_value”来获取其中的内容。
我将所有这些都封装到一个包装方法中，该方法将处理返回值并将其转换为适当的 Ruby 对象。 http://www.thomthom.net /software/sketchup/tt_lib2/doc/TT/GUI/Window.html#call_script-instance_method
概要是：
所有这些都是同步的。
Javascript泵
Javascript> SketchUp
如果你确实需要从 JS 中获取信息，那么我认为你需要这样做：
这个概念是存储您的消息，然后将控制权移交给 SketchUp 端，SketchUp 端可以同步泵送消息。
（未经检验的理论。）
I've spent a great deal of time with the WebDialog class. I planned to write such a pump, but I found that I could do it differently with more reliable results.
( My WebDialog findings: http://forums.sketchucation.com/viewtopic.php?f=180&t=23445 )
Alternative Method
SketchUp > JavaScript
My alternative method was that I didn't try to push data from the WebDialog to Ruby. But instead had Ruby pump the WebDialog because
Webdialog.execute_scriptis synchronous.I send a command to the WebDialog with a query. The Javascript then processes this and put the result into a hidden INPUT element which I then use ´WebDialog.get_element_value` to fetch the content of.
All of this I wrapped up into a wrapper method the will process the return value and convert it into appropriate Ruby objects. http://www.thomthom.net/software/sketchup/tt_lib2/doc/TT/GUI/Window.html#call_script-instance_method
The outline is:
All this is synchronous.
Javascript Pump
Javascript > SketchUp
If you really need to pump information from JS, then I think you need to do something like this:
The concept would be to store up your messages and then hand over control to the SketchUp side which can pump it synchronously.
(Untested theory.)