400920 - mouse wheel scrolling doesn't work if scroll bar not visible

Status: NEW

(Firefox :: General, defect)

Description

[Mikel Ward]

The linked page opens a window with no scroll bars.  I can scroll down using the Down or Page Down key, but not using the mouse wheel.

1. Open http://www.news.com.au/feature/0,,5012863,00.html
2. Scroll down to ELECTORATEFINDER
3. Enter 3185 in the POST CODE SEARCH field and click the Show Electorate button
4. Click on the VIEW WEBSITE link next to Phillip Walker in the bottom right corner
5. Try to scroll the page down by using the mouse scroll wheel

(You may need to enable popups to complete these steps)

The window is opened using the following parameters to JavaScript's window.open function:
toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=810,height=675

I assume mouse scrolling is somehow linked to the scroll bars.

Comment 1

[Mikel Ward]

Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.6) Gecko/2007100814 Ubuntu/7.10 (gutsy) Firefox/2.0.0.6

Comment 2

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

The page has gone, would you attach a testcase?

Comment 4

[Alice0775 White]

Attachment: testcase

Can not mouse wheel scroll when window.open without "scrollbars=yes"

On the other hand, the scroll with arrow key or PageUp/Down key is possible.
And Autoscroll works, too.

Steps to Reproduce:
1. Open test case
2. Click popuop button
3. Mouse wheel scroll

Actual Results:
 I can not scroll by wheel scroll

Expected Results:
 I can scroll by mouse scroll

Comment 5

[Alice0775 White]

This issue still exist on

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a3pre) Gecko/20100309 Minefield/3.7a3pre ID:20100309041426
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.2pre) Gecko/20100309 Namoroka/3.6.2pre ID:20100309041925
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.9pre) Gecko/20100309 Firefox/3.5.9pre ID:20100309040105

Comment 6

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I think that this is designed in bug 259615.

dbaron, would you check this?

Comment 7

[Alice0775 White]

(In reply to comment #6)
> I think that this is designed in bug 259615.
> 
> dbaron, would you check this?

I do not think so.
There are not any 'overflow: hidden' style/attribute.

Comment 8

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

because there is no "scrollbars" in the argument.

See
http://mxr.mozilla.org/mozilla-central/source/layout/generic/nsGfxScrollFrame.cpp#1863

it makes overflow:hidden; internally.

Comment 9

[Alice0775 White]

If it is so, Scroll by keyboard or autoscroll should not be permitted, too.
Is it other bugs?

Comment 10

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

(In reply to comment #9)
> If it is so, Scroll by keyboard or autoscroll should not be permitted, too.
> Is it other bugs?

I forget the bug#, but smaug were working for the keyboard problem, I'm not sure for the other.

Comment 11

[Alice0775 White]

Anyway there is WORKAROUND( setting dom.disable_window_open_feature.scrollbars to true).
It is not a so big problem.

Comment 12

[Tyler Downer [He/Him]]

No reply, INCOMPLETE. Please retest with Firefox 3.6.x or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.

Comment 13

[Mikel Ward]

Sorry, I thought Alice0775 White's comments were sufficient.

Yes, so it sounds like Mozilla's default for scrollbars is no

https://developer.mozilla.org/en/DOM/window.open
"If you define the strWindowFeatures parameter, then the features that are not listed, requested in the string will be disabled or removed (except titlebar and close which are by default yes)."

Whereas Internet Explorer's default is yes
http://msdn.microsoft.com/en-us/library/ms536651(VS.85).aspx
"scrollbars = { yes | no | 1 | 0 }
Specifies whether to display horizontal and vertical scroll bars. The default is yes."

Comment 14

[Mikel Ward]

Chrome's (5.375 beta) default is yes, Opera's (10.54) is no, but it still allows scrolling.

So it might be worth reconsidering the Firefox default for compatibility reasons.

Comment 15

[Mats Palmgren (inactive)]

IE10 (beta) defaults to scrollbars=no, does not allow scroll by mouse wheel or
kbd UP/DOWN, but it does scroll when click-dragging to select text.

Comment 16

[Manish Goregaokar [:manishearth]]

Still exists on 26. Scroll when click dragging doesn't work either.