No click fired when mousedown on the text of an element and mouseup on empty area




9 years ago
2 years ago


(Reporter: janne.aukia, Assigned: smaug)


(Depends on: 1 bug)

Firefox Tracking Flags

(Not tracked)



(3 attachments)



9 years ago
User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_1; fi-fi) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; fi; rv: Gecko/20100316 Firefox/3.6.2

A div with text, when you mouse down on the text and mouse up outside the text, no click event is fired, even though the event targets are the same for mousedown and mouseup.

The same surprising behaviour happens in Safari as well.

Reproducible: Always

Comment 1

9 years ago
Created attachment 436452 [details]
Example of the problem


9 years ago
See Also: → bug 326851

Comment 2

9 years ago
This would seem to be related to: . The difference is that no visible parent-child-relationship is needed, but the problem occurs with a div with text content as well.
This is possibly the behavior we need to keep for backward compatibility.
I'll bring this up on WebApps WG / DOM 3 Events.
And the behavior doesn't seem too surprising.
When text is clicked, user clicks actually a text node, and then releasing
happens on the div element.

Comment 5

9 years ago
Thanks for the response!

In practice, this problem shows up with, for example, links that have been styled like buttons by adding padding and background to them. When the user mousedowns on the link text but mouseups in the padded area, the event does not fire. For the user, the button feels like randomly working and not working, since even a small movement of the mouse while clicking the link might prevent the click event.

Work around is to track the mousedown and up elements with javascript, but it is quite difficult. Or to just respond to mouseup event, with the risk of user accidentally mouseupping over a wrong button.
Ok, per current DOM 3 Events draft the click event should be fired.
I'll change this and hopefully the change doesn't cause too many regressions.
Assignee: nobody → Olli.Pettay
Ever confirmed: true

Comment 7

9 years ago
Created attachment 449318 [details] [diff] [review]

I pushed the patch to tryserver.
If everything looks good there, I'll write the tests and ask reviews.
Created attachment 449341 [details] [diff] [review]
with tests

This may break something on the web, so would be great to get this in
reasonable soon.
Attachment #449341 - Flags: review?(jst)


9 years ago
Attachment #449341 - Flags: review?(jst) → review+
Oops, I need to remember to land this.
Will do later today.

Comment 11

8 years ago
This was landed in:
Last Resolved: 8 years ago
Resolution: --- → FIXED


2 years ago
Depends on: 1312867
You need to log in before you can comment on or make changes to this bug.