190063 - height,bottom, and related vertical positional properties calculate based on window instead of page

Status: RESOLVED DUPLICATE of bug 105286

(Core :: Layout, defect)

Description

[Billy]

User-Agent:       Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.3b) Gecko/20030122
Build Identifier: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.3b) Gecko/20030122

This is the first time I'm submitting a bug here so I apologize for any mistakes
before hand, especially if this isn't a bug, but a feature. =)

I created a page that couldn't be displayed all at onece in my mozilla window
(ie. I get a vertical scrollbar).  In this page I have a body element which has
a large list and 3 div objects.  2 use position:absolute and 1 uses float:right. 

The float:right div element in standards mode w/ height:100%; behaves as though
height:auto; was set.  I assume this is correct behavior(?).

The other 2 div elements which use position:absolute (and the float:right under
quirks mode) seem to calculate vertical positional properties based on the size
of the mozilla window instead of the size of the page.  

position:absolute 1 uses height:100%;top:0px; but the block ends at the end of
the window, not at the end of the page.

position:absolute 2 uses bottom:0px; and again the block appears at the bottom
of the window instead of the bottom of the page. 

Reproducible: Always

Steps to Reproduce:
1. load test page
2.
3.

Actual Results:  
What I described in Details

Expected Results:  
I expected the vertical positional properties to be based on the actual page
size, not the window size.

Comment 1

[Billy]

Attachment: Test page which display's problem (set window size lees than pages size)

My DSL is always reliable so this is the test page I used.

Comment 2

[Boris Zbarsky [:bzbarsky]]

> The float:right div element in standards mode w/ height:100%; behaves as
> though height:auto; was set.  I assume this is correct behavior(?).

Yes, if its parent is height:auto.  See
http://www.w3.org/TR/CSS21/visudet.html#propdef-height

> The other 2 div elements which use position:absolute (and the float:right 
> under quirks mode) seem to calculate vertical positional properties based on
> the size of the mozilla window instead of the size of the page.  

This is likely to be the way CSS2.1 and CSS3 specify it....

The second issue is covered by bug 105286 ("absolutely positioned 100% height
div has height of viewport, not root element? [containing block]")





*** This bug has been marked as a duplicate of 105286 ***