[wpe-webkit] Synchronous JS interactions with native code

Munez Bn munezbn.dev at gmail.com
Mon Jun 24 22:54:23 PDT 2019

Hi Ryan,
I am not sure  if it is really helpful , but i was looking something
similar  [1]  and then after getting all help from folks here, I wrote a
sample web-extension using JSC Glib API which you can find  at [2] .
If you want to learn more about web extension then refer [3] and for
understanding JSC Glib API  refer [4]

[1]  https://lists.webkit.org/pipermail/webkit-wpe/2019-June/000175.html
[2] https://github.com/munezbn/sample_webkit_extension
[4] https://webkitgtk.org/reference/jsc-glib/stable/index.html

Thanks & Regards

On Tue, Jun 25, 2019 at 5:51 AM Ryan Walklin <ryan at testtoast.com> wrote:

> Hi All,
> I'm currently experimenting with implementing a basic subset of the
> WebExtension API (
> https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions)
> with WPE, and struggling with some basics. This may be due to my poor
> knowledge of JS, or sheer impossibility, but I'd love some help.
> I know that Midori has a stub implementation using WebKitGTK (
> https://github.com/midori-browser/core/pull/250) and they use a
> combination of webkit_user_content_manager_register_script_message_handler
> to register a script handler, then in JS call
> window.webkit.messageHandlers.midori.postMessage to get back to UI code,
> then in their UI code use webkit_web_view_run_javascript to call
> "Promise.resolve()" to execute the callback.
> So far they have implemented functions that themselves return promises,
> however I need to implement APIs to directly return function results and
> variables, e.g. browser.runtime.getManifest() that returns the
> WebExtension's manifest.json file. I've tried to modify Midori's JS
> function to use async/await to return the value once the promise resolves,
> but have had no success so far.
> Has anyone else tried anything like this? Or is there any way to have
> synchronous communication between the JS context and my app?
> Regards,
> Ryan
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