How to exit FullScreen mode with native code?

[lwttai]

I need to enable ESC key for exiting the full screen mode.
What I am doing now is to invoke javascript

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document.webkitExitFullscreen()

in OnKeyEvent callback.
As know as, js function may override by website js code like:

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document.webkitExitFullscreen = function(){console.log("hook webkitExitFullscreen");}

Is there any native way or any secure js code which will not be override by the js from website to exit full screen mode?

[magreenblatt]

JavaScript could also override the ESC key handling unless you use OnPreKeyEvent instead of OnKeyEvent.

Chromium internally has a WebContents::ExitFullscreen method that is not currently exposed by CEF. It would be reasonable to add a CefBrowserHost::ExitFullscreen method to support this.

[lwttai]

JavaScript could also override the ESC key handling unless you use OnPreKeyEvent instead of OnKeyEvent.

Chromium internally has a WebContents::ExitFullscreen method that is not currently exposed by CEF. It would be reasonable to add a CefBrowserHost::ExitFullscreen method to support this.

Yep, seems that should be a ability provide by CEF. I will create a issue for this.

[amaitland]

You can take a copy of `document.exitFullscreen` and store it in your own global javascript variable for later execution.

OnContextCreated should be called before all other javascript has executed, so there's plenty of options at your disposal.

Alternatively you can try execute the following in OnContextCreated (this runs in devtools, never tried it in a real world application);

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Object.seal(document);