236727 - mousewheel failure with document.getElementById("foo").innerHTML

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[F. Griesser]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040206 Firefox/0.8
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040206 Firefox/0.8

There is a strange mouse-wheel failure with
'document.getElementById("foo").innerHTML = "...";'

When I display a so called 'tooltipp'-box using .innerHTML, then after closing
the box the wheel doesn't work anymore. I tried styles 'display' (testcase1) AND
'visibility' (testcase2). A completely other behaviour is the result when the
vibility is hidden, but the tooltipp-node isn't cleared by:
'document.getElementById("foo".innerHTML = ""; (as shown in testcase3).

Please have a look at the Testcases 1,2 and 3 which I will append to this
report, for further details.

This problem occurs with 0.80 Firefox (both WinXP, Linux Debian[sid]) and with
Mozilla 1.5 (debian sid). IE6 seems to do it correctly and also opera 7.11 has
the mouse-wheel behaviour what I expected (but another bug).

Reproducible: Always
Steps to Reproduce:
1. Open the testcase 1, 2 and/or 3
2. resize Browser to get scrollbar and move the pointer over the bold words in
the text
3. try to use the wheel after closing the 'tooltip' (testcases 1 and 2) or
DURING the tooltip is visible (testcase 3)

Actual Results:  
The mousewheel does not work as expected.

Expected Results:  
the mousewheel should work all the time.

Comment 1

[F. Griesser]

Attachment: Testcase1: using .style.display

this is based upon the example as mentioned in "DHTML" - book (2003, Franzis',
Poing/Germany) by Stefan Münz.

Comment 2

[F. Griesser]

Attachment: Testcase2: using .style.visibility

this example is modified (using css 'visibility' instead of 'display') but same
result.

Comment 3

[F. Griesser]

Attachment: Testcase3: the document.getElementById("foo").innerHTML part to clear the node is commented out

using css 'visibility' as in testcase2, but the 'clearing' the tooltip.node by
document.getElementById("Tooltip").innerHTML = "";
has been commented out, which cause a completly other behaviour, but as I
suppose, it's still not correct.

Comment 4

[Boris Zbarsky [:bzbarsky]]

probably a focus issue.... 

Comment 5

[F. Griesser]

Attachment: JavaScript Problem with the + Operator

After the "Element" is shown, the closing does not work when the variable has
been extended by the 'closing part' as follows
variable = variable + <closing part>

Comment 6

[F. Griesser]

It is NOT a problem with DOM. It is a problem with JavaScript engine.

Please have a look to testcase 4.  If you are new to this 'bug' please just
refer to the mentioned TestCase "JavaScript Problem with the + Operator". 

The wheel works when the "closing" is already a part of the variable, there is
no problem. But when the closing part is added by the addition-operator (+),
then the wheel is blocked. 

Example: variable = variable + 'link-to-close'

Comment 7

[Jesiah S]

I see this on LInux 2004033108.  When I click anywhere I can then scroll again.

Comment 8

[Bob Clary [:bc] (inactive)]

I can reproduce the problem in
https://bugzilla.mozilla.org/attachment.cgi?id=143308&action=view using Mozilla
1.6 but not Mozilla 1.85a from today on winxp sp2. 

-> wfm

Comment 9

[F. Griesser]

I tried the newest Mozilla-Firefox nightbuild (WinXP/SP1). It also works for me
now. Seems to be resolved with the new mozilla version. Thank you very much!