577360 - document.body.clientWidth changes during onresize event (unmaximize)

Status: RESOLVED INVALID

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Thue Janus Kristensen]

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4
Build Identifier: Firefox 3.6.6

document.body.clientWidth changes while body.onresize() is running.

Reproducible: Always

Steps to Reproduce:
1. Go to http://thuejk.dk/test.html
2. Maximize window
3. Unmaximize window
Actual Results:  
My javascript onresize handler detects that document.body.clientWidth has changed while the handler was running.

Expected Results:  
The size of the document body should be finalized before the body onresize handler is run.

Comment 1

[Boris Zbarsky [:bzbarsky]]

I can't reproduce the problem using either trunk or 3.6.6 on Mac...

Comment 2

[Thue Janus Kristensen]

It is probably a timing issue.

I was able to reproduce it on 2 different computers, but the line in the resize handler where document.body.clientWidth changed was not the same.

Comment 3

[Boris Zbarsky [:bzbarsky]]

That seems fairly unlikely, unless the timing is in when the window manager resizes the window.  When you get clientWidth the first time we make sure all the pending changes we control are flushed out....

Comment 4

[Thue Janus Kristensen]

E pur si muove!

I tested and reproduced the bug on Linux (Iceweasel 3.5.10) and Windows 3.6.6, btw.

Comment 5

[Boris Zbarsky [:bzbarsky]]

Martijn, can you reproduce on Windows?

Comment 6

[Martijn Wargers (dead)]

So when the bug occurs, the red cross doesn't get its position updated when the window gets unmaximized? In that case, I can't reproduce the bug.

Comment 7

[Boris Zbarsky [:bzbarsky]]

When the bug occurs you get an alert saying "document.body.clientWidth changed from NNN to MMM" where NNN and MMM are some numbers.

Speaking of which... Thue, what numbers do you typically see there?

Comment 8

[Thue Janus Kristensen]

Ah bugger. I figured out that it was the scrollbars which disappears once I move the positioned elements inside the frame, which causes clientwidth to update.

Sorry for the false bug report. :(

Comment 9

[Boris Zbarsky [:bzbarsky]]

Ah, ok.  Thanks for sorting that out!