Questions ad JavaScript in JavaFX' WebEngine

[Mike Hearn]

The WebKit binding code is some of the more complex code in JavaFX. Rather
than try to extend the script tag you could instead look at the code for
the <object> tag and the old support for Netscape-style plugins.

https://github.com/openjdk/jfx/tree/master/modules/javafx.web/src/main/native/Source/WebCore/plugins

I've looked at this in the past to investigate embedding of arbitrary
JavaFX nodes into a web page. It doesn't look particularly unfeasible as
there's still a lot of old code lying around that used to do exactly that,
it's just not used much anymore. However wiring it up to the Java level
would require a fairly adventurous programmer with good knowledge of C++,
rendering engines and JavaFX internals.




On Mon, May 11, 2020 at 14:17:07, Rony G. Flatscher <Rony.Flatscher at wu.ac.at
> wrote:

> On 09.05.2020 17:23, Kevin Rushforth wrote:
>
> WebEngine uses WebKit's JavaScriptCore as its JavaScript engine. The
> sources are in the jfx repo, along with the JavaFX-specific classes that
> implement the two-way Java <--> JavaScript bridge. Other than the public
> API docs for WebEngine, which you referred to in your message, there isn't
> any documentation of the interface.
>
> OK, thank you very much, this is reassuring! :)
>
> What sort of information are you looking for?
>
> Well, as event handlers and script tags in HTML have a type attribute that
> allows to denote script languages other than JavaScript, I am interested in
> evaluating what WebEngine/WebView allows for to support this with any of
> the Java script engines.
>
> ---rony
>
> On 5/8/2020 7:01 AM, Rony G. Flatscher wrote:
>
> Wondering which JavaScript engine gets referred to in WebEngine [1].
>
> In case it is currently (JavaFX 14) Nashorn [2], what happens after
> Nashorn gets removed from the next [3] version? In case it is WebKit's
> JavaScriptCore [4] where can one study the interface from WebEngine to it?
>
> ---rony
>
> [1] WebEngine: <https://openjfx.io/javadoc/14/javafx.web/javafx/scene/web/
> class-use/WebEngine.html>
> [2] Nashorn: <https://openjdk.java.net/projects/nashorn/>
> [3] Nashorn removal from JDK 15: <https://openjdk.java.net/jeps/372>
> [4] JavaScriptCore: <https://trac.webkit.org/wiki/JavaScriptCore>
>
>