Popup rendering in Cef embedded WPF application

[Ingeniou7]

I have a WPF application that is using CefSharp Web Browser control to load a Web application that I do not own. On the Web application there are validation popups that get triggered upon page validation. In normal browser the popups are rendered appropriately, but the rendering within the CefSharp Web browser control, the popup seems to be inactive and the button ("OK" button) is partially hidden making it diffucult for the user to understand what it is.

Is there anything specific that needs to be done for Popups to be loaded and rendered as expected in CefSharp?

Thanks,

[Alex Maitland]

That's not exactly a lot to go by.

- What version are you using?
- When you say popup, do you mean javascript alerts or full browser popups?
- Can you provide a `jsfiddle` to reproduce the problem?
- Does the problem exist when running a different machine?
- Are you using a `DPI > 1`?

The more info you can include the more likely you are to get a helpful response. Have a quick read over https://github.com/cefsharp/CefSharp/blob/master/CONTRIBUTING.md#what-should-i-include-when-creating-an-issue

[Ingeniou7]

Alex, Thanks for responding. My answers inline here. I've included a screenshot of how the Alert is getting rendered in my application.

On Friday, 27 March 2015 03:20:25 UTC-4, Alex Maitland wrote:

That's not exactly a lot to go by.

- What version are you using?

I'm using CefSharp v39 

- When you say popup, do you mean javascript alerts or full browser popups?

Its a Javascript Alert 

- Can you provide a `jsfiddle` to reproduce the problem?

I'm afraid I cannot as I don't own the Web application  and don't have the code for it

- Does the problem exist when running a different machine?

Yes 

[Alex Maitland]

Without a way to reproduce the issue, my only suggestion would be to program around it. You can implement your own implementation for all `Javascript Dialogs`.

https://github.com/cefsharp/CefSharp/blob/master/CefSharp.Example/JsDialogHandler.cs
https://github.com/cefsharp/CefSharp/blob/master/CefSharp/IWebBrowser.cs#L130

There isn't a while lot of documentation, so you might need to read the source.

Some basics apply though, return false to let `Cef` use it's default implementation, return true to handle yourself. The other params are mostly just strings and bools, so you could be able to work the rest out by trial and error.

[Ingeniou7]

I am able to reproduce the problem using the CefSharp.Wpf.Example project.

I opened this link http://www.w3schools.com/js/js_popup.asp and clicked on one of those Buttons that throw an alert window and see the issue. Can you please check to see the behavior?

Thanks,

[Alex Maitland]

Can you provide a list of steps to reproduce?

I'm not seeing any problems with any of the examples from w3schools.

[Ingeniou7]

Alex, Thanks for being so responsive. Here are the steps with the screenshot.

1. I run the sample WPF project.

2. I load the W3schools link and the click the first "Try it Yourself>>" button.

3. That opens a window within it and on the Result pane, I click the Try it button to see the Alert popup displayed as shown in the attached screenshot.

Thanks,

[Jørn Hansen]

It looks like it's related to https://github.com/cefsharp/CefSharp/issues/777 and this upstream CEF issue https://code.google.com/p/chromiumembedded/issues/detail?id=760

BR,
JornH

[Alex Maitland]

This will be fixed for the final release of `39.0.0` or you can try the `MyGet` CI builds using https://www.myget.org/gallery/cefsharp

[Ingeniou7]

Thanks Alex. Do you know a date when Version 39.0.0 will be released?

[Alex Maitland]

Soon.