162643 - focus trapped in form controls when using mousewheel

Status: VERIFIED DUPLICATE of bug 33732

(Core :: Disability Access APIs, defect)

Description

[Sven Burgener]

When trying to use the mouse wheel to scroll through a page, the focus for the
mouse wheel sometimes (seldom) stays on an HTML <select ...> list.

This happens, for example, on this very page, where the focus remains on the
Component list (where you can choose which component to report a bug on) such
that scrolling the page using the mouse wheel becomes impossible.

Comment 1

[Nicu Buculei]

This is happening also in textarea, with mousewheel you scroll inside the
textarea box.

Comment 2

[Sam J. Fleet]

That is not really a bug.  Once you select the textarea or the scrollbar on the
webpage.  You just only shift the focus away from the browser to that part of
the html.  When you see the cursor in the textarea or the blue highlight on the
scrollbar, this showed that you had the focus set on it.  There is only one
focus and that focus is the active focus which we get to act on.  There is no
such a thing as having two focuses or more.  Really, it is the way it is.  It is
also the way it is with all other web browsers.  The only way you can break free
is by clicking on the webpage beside the textarea & scrollbar.  This is where
the focus shift away to the active page and from there you're able to use the
scroll button on the mouse to move around the webpage.

This bug should be marked as invalid.

Comment 3

[Sven Burgener]

I understand what you're saying, but my experience tells me differently (unless
we misunderstand each other).

As an example, visit http://bugzilla.mozilla.org/enter_bug.cgi?product=Browser
(when logged in). Now, with Mozilla Build ID 2002053012 when I scroll my mouse
the Component <select ...> scrolls up and down, and not the page.

This persists, even if I click on - or even select some text just to be very
sure - of the page and then scroll the mouse wheel again (having the mouse
cursor over the page and not the Component <select ...>).

With IE, the behaviour is correct in that you can scroll either the page or the
Component <select ...> by clicking on the desired one and thereby transfering
the focus. Same applies to Netscape v4.75.


With textarea boxes everything happens as expected (click to transfer the
focus). I don't see any problem there.

Comment 4

[Sam J. Fleet]

OIC, yep, an misunderstanding here.  Okay, I tested the hyperlink you had
provided and it worked okay to me.  Althought the build id is a day old.  Did
you try with the latest build?

Comment 5

[Sven Burgener]

Yup, I have just tested this with the new 1.1 release:

Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.1) Gecko/20020826

An example of where it happens is here:
http://bugzilla.mozilla.org/enter_bug.cgi?product=Browser&format=guided

Load the page and try using the wheel mouse and you'll see that the only thing
that scrolls up and down is the "Component" list just under the heading "Browser".

Comment 6

[Michael Lefevre]

this is a known bug since forever, unfortunately...

*** This bug has been marked as a duplicate of 33732 ***

Comment 7

[Nick Bebout]

Verified Dupe