516991 - Drag selection is broken, drag the selection outside the visible portion the page starts jumping all over the place.

Status: RESOLVED FIXED

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

Description

[Alice0775 White]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2a2pre) Gecko/20090916 Firefox/3.5.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20090916 Minefield/3.7a1pre ID:20090916050534

Drag selection is broken.

Say I want to select a part of a Wikipedia article that is longer than what is displayed. I can select the visible portion just fine but when I drag the selection outside the visible portion the page starts jumping all over the place.

Reproducible: Always

Steps to Reproduce:
1.Start Minefield with new profile.
2.Resize the height of the browser into small if necessary.
3.Open URL
4.Drag selection by mouse. ( Ex. select a paragraph written as "Features")

Actual Results:  
The page will jump while selecting text.


Expected Results:  
The page should not jump.


This issue is not only Wikipedia, I can reproduce on many sites, including forums.mozillazine.org.

Please refer to the discussion of the following forums
http://forums.mozillazine.org/viewtopic.php?p=7525055#p7525055

See YouTube video of the issue here: http://www.youtube.com/watch?v=_j8qDF6yxMY posted to the forum.

[Regression Window as follows]:
Works::
http://hg.mozilla.org/mozilla-central/rev/8afb65205203
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20090913 Minefield/3.7a1pre ID:20090913055114

Broken:
http://hg.mozilla.org/mozilla-central/rev/eda2433181c9
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a1pre) Gecko/20090913 Minefield/3.7a1pre ID:20090913071646

Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=8afb65205203&tochange=eda2433181c9

[Candidate regression]
Bug 503943, add mouse capturing api to elements, remove capturing from views

Comment 1

[Jim Jeffery not reading bug-mail 1/2/11]

Confirmed, setting to 'New'

Comment 2

[Neil Deakin]

Attachment: get the right view when scrolling

I heard that roc might have reworked the selection code to not use views, so this may not be needed soon. Anyway, a quick fix to handle the regression.

Comment 3

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

Comment on attachment 401057 [details] [diff] [review]
get the right view when scrolling

Test?

I noticed this yesterday while I was updating my patches, but yes we should fix this right now

Comment 4

[Neil Deakin]

Attachment: add a test

Comment 5

[Neil Deakin]

http://hg.mozilla.org/mozilla-central/rev/3a45d94015b2

Comment 6

[[e-mail]]

in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.3a4pre) Gecko/20100316 Minefield/3.7a4pre 
similar problem happens whith 2 nested scrollable views