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The WebView JSExtInvoke event no longer working in EO 2020 Options
Gregory Riggs
Posted: Thursday, March 19, 2020 6:35:12 PM
Rank: Newbie
Groups: Member

Joined: 3/19/2020
Posts: 2
Hello,

I'm looking at upgrading from EO 2017 to EO 2020, and I noticed the WebView's JSExtInvoke is no longer working; our event handlers are never being called when our Angular JavaScript code attempts to make a callback into our C# code.

Is this a known breaking change?
Any ideas or suggestions how to get the JSExtInvoke event working again?

Thanks & Regards,
Greg
eo_support
Posted: Friday, March 20, 2020 1:29:47 PM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 22,032
Hi,

We are not aware of any issue with JSExtInvoke. You may want to use the built-in debugger feature to debug your JavaScript code to make sure that it is called:

https://www.essentialobjects.com/doc/webbrowser/advanced/debug.aspx

Thanks!
Gregory Riggs
Posted: Monday, March 23, 2020 4:08:43 PM
Rank: Newbie
Groups: Member

Joined: 3/19/2020
Posts: 2
Thank you for the tip about the built-in debugger feature; that was very helpful!

We are using C# Windows Forms, and our Angular code was doing this:

declare var EOWebBrowser: any;
EOWebBrowser.ExtInvoke(...

When I used the built-in debugger, I was able to see in the console that we are getting the error:

Error: Exception Thrown by ...:: eoWebBrowser is not defined

I couldn't find EOWebBrowser related to extInvoke in the EO documentation, so I'm unsure where we obtained that from?

https://www.essentialobjects.com/doc/webbrowser/advanced/jsext.aspx

I changed our code to the following to match what I see in the EO documentation which fixed the problem for us.

declare var eoapi: any;
eoapi.extInvoke(...

Thanks!
Greg
eo_support
Posted: Tuesday, March 24, 2020 10:58:38 AM
Rank: Administration
Groups: Administration

Joined: 5/27/2007
Posts: 22,032
Glad to hear that you got it working. Yes. eoWebBrowser only exists in early versions. The current version uses eoapi.


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