- From: Xidorn Quan <quanxunzhen@gmail.com>
- Date: Wed, 21 Oct 2015 19:11:40 +1100
- To: www-style list <www-style@w3.org>
I propose adding the following readonly attributes to Window: scrollMinX, scrollMaxX, scrollMinY, scrollMaxY, and the following readonly attributes to Element: scrollLeftMin, scrollLeftMax, scrollTopMin, scrollTopMax. These attributes, as their names indicate, return the max/min possible value can be returned from their corresponding attributes in the given context. They can be useful for authors to implement their own scrolling indicators. Previous discussion about scrollMaxX/Y can be found here: * https://lists.w3.org/Archives/Public/www-style/2012Jun/0525.html * https://lists.w3.org/Archives/Public/www-style/2013Apr/0473.html The previous discussion only covers scrollMax*, but given the current spec, scrollLeft and scrollX can be negative in RTL and vertical-rl documents, and in which case, the maximum values would always be zero, so we would need the Min ones. Since we do not have any bottom-to-top mode in spec, scrollMinY and scrollTopMin may not be useful, but we could add them for completeness. Gecko has shipped the Max ones since long ago, and we are currently adding the Min ones for internal use (not going to expose to the web before they get specified, though). Thoughts? - Xidorn
Received on Wednesday, 21 October 2015 08:12:52 UTC