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https://issues.apache.org/jira/browse/SHINDIG-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Lindner closed SHINDIG-1421.
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part of 2.5.0-beta1 release.
> dynamic-height feature overestimates the height of gadgets that have elements
> with clipped overflow in Webkit
> -------------------------------------------------------------------------------------------------------------
>
> Key: SHINDIG-1421
> URL: https://issues.apache.org/jira/browse/SHINDIG-1421
> Project: Shindig
> Issue Type: Bug
> Components: Javascript
> Affects Versions: 2.0.0-RC2
> Environment: WebKit
> Reporter: Mat Mannion
> Priority: Minor
> Fix For: 2.5.0-beta1
>
> Attachments: shindig-1421.patch
>
>
> In WebKit, the dynamic-height feature has a special-case calculation that
> takes each element in turn and finds the maximal value of the offsetTop and
> the scrollHeight, in an attempt to find the lowest point of the gadgets'
> content. This calculation is only run in WebKit browsers, and only when a
> specific height isn't passed to gadgets.io.adjustHeight()
> The problem with this is when there is an element in the gadget which clips
> the y-overflow (i.e. that has any value other than 'visible') and also
> specifies the height. In this situation, scrollHeight returns the _actual_
> height of the content, not the height as it is displayed. If an element has
> 300px worth of content but has overflow: auto and height: 200px, it will
> display as a 200px element on the page with a vertical scrollbar, but
> element.scrollHeight will still return a value of 300px.
> The fix for this is two-fold. Firstly, we should use offsetHeight instead of
> scrollHeight, and secondly we should not consider elements that are children
> of a clipped-overflow element for determining the maximal height of the
> content (as elements that are below the scroll fold are considered).
> Patch forthcoming.
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