43638 - position:absolute elements do not inherit visibility

Status: RESOLVED WORKSFORME

(Core :: CSS Parsing and Computation, defect, P3)

Description

[Dylan Schiemann]

Overview Description: Child Elements that are absolutely positioned do not 
inherit visibility changes.

Steps to Reproduce: 
1) Create a document with a nested absoultely positioned element
2) Change the visibility of the parent element

Actual Results: 
The child element visibility is unchanged

Expected Results: 
The child element visibility changes

Reproducibility: 
Always

Build Date & Platform Bug Found: 
Tested in 20000622 nightly build, Win NT 4 SP 6a

Additional Builds and Platforms Tested On: 
M16 build

Additional Information: 
Testcase to follow

Comment 1

[Dylan Schiemann]

Attachment: testcase

Comment 2

[Dylan Schiemann]

Confirmed on build 20000613 in Windows 2000.  Switching platform to all.

Comment 3

[Pierre Saslawsky]

The visibility is inherited. The problem is that no redraw occurs if, and only 
if, the child element is outside its parent's frame. If you cause a repaint or 
just resize the window, the display is correct.

Comment 4

[Pierre Saslawsky]

Absolutely positioned elements outside their parent's frame is not the norm.
---
This bug has been marked "future" because the original netscape engineer working 
on this is over-burdened. If you feel this is an error, that you or another known 
resource will be working on this bug, or if it blocks your work in some way -- 
please attach your concern to the bug for reconsideration. 

Comment 5

[Dylan Schiemann]

It would seem to me that it is not outside the norm because you don't always 
know the size of the child elements and don't want to have to recalculate the 
parent frame dimensions to do this.  How do you repaint using JavaScript 
without resizing the window.  Thanks.

Comment 6

[Pierre Saslawsky]

I marked this bug "future" because it is not usual, albeit legit - I agree, to 
have children outside the parent frame and show/hide everything with a single 
call on the parent.

A workaround is to show/hide the children that are outside the parent's bounds 
before showing/hiding the parent.

Comment 7

[ckritzer (gone)]

Moving to correct QA Contact - here ya go Ian!

Comment 8

[Robert O'Callahan (:roc) (email my personal email if necessary)]

Works for me in build 2001083106

Comment 9

[Pierre Saslawsky]

Correct: it looks like it's been fixed a long time ago.