Internet Explorer 11 - compatibility mode

Hello,

I had some trouble with embedded IE11-webviews. The useragent contains msie and the documentMode is 11. This is why they get the IE10 permutation. But the IE11-"browser" has removed some functions in the compat mode. (createStyleSheet for example)

So I used a custom UserAgentPropertyGenerator based on

https://gwt.googlesource.com/gwt/+/2.6.1/user/src/com/google/gwt/useragent/rebind/UserAgentPropertyGenerator.java

to rewrite the binding for IE11. In fact the IE11 compatibility mode is not compatible with older IE.
See: http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.85).aspx

I added a new Block before the IE10-code block

1. // IE11
2. new UserAgentPropertyGeneratorPredicate("gecko1_8")
3. .getPredicateBlock()
4. .println("return ($doc.documentMode >= 11);")
5. .returns("'gecko1_8'"),
6. // IE10

The first tests looked good to me. But I am not sure, if I will cause some serious trouble with this approach.

The IE11 will get the gecko1_8 permutation in Standard mode and Compatibility mode now.

There may be errors, if one sets a variable "documentMode=11" onto the document. I may also need to add another condition to the oterh IE-code blocks

return (ua.indexOf('msie') != -1 && ($doc.documentMode >= 10) && $doc.createStyleSheet);

I know I may also get into trouble with IE12. But ....uhm .... One always get into trouble with never IE-versions.

Is there a problem with this approach I don't see?

Thanks,

Christian Kütbach

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