[Webkit-unassigned] [Bug 175016] getClientRects doesn't work with list box option elements

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175016

--- Comment #9 from zalan <zalan at apple.com> ---
Comment on attachment 316844
  --> https://bugs.webkit.org/attachment.cgi?id=316844
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=316844&action=review

>>> Source/WebCore/dom/Element.cpp:1154
>>> +    if (is<HTMLOptionElement>(*this) || is<HTMLOptGroupElement>(*this)) {
>> 
>> This kind of thing is really unfortunate for long term maintainability of our code. But we do have a lot of code like this. We could consider a more traditional solution where we use virtual functions instead of sprinkling type-specific checks into base classes.
> 
> hmm, maybe we can add a virtual absoluteQuads() to Node? or Element? The default implementation would simply use RenderBoxModelObject::absoluteQuads() and elements not having a renderer would implement it too.

What do you mean by elements not having renderer would implement it too? What would they return? -elements with no renderers don't compute client rects.

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