1469939 - Svg element does not support passing of 'event' data for 'onmousemove' event. Instead throws ReferenceError: event is not defined

Status: RESOLVED DUPLICATE of bug 854213

(Core :: SVG, defect)

Description

[VaBi]

Attachment: test.html

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/66.0.3359.181 Chrome/66.0.3359.181 Safari/537.36

Steps to reproduce:

1. Created simple web page (see attached web page) containing SVG element with 'onmousemove' event handler.
2. Opened in Firefox
3. Opened Web developer=>Debugger
3. Moved over the SVG element
 


Actual results:

Firefox throws 'ReferenceError: event is not defined'


Expected results:

Should call handler with 'event' argument passed properly.

Comment 1

[Gingerbread Man]

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:62.0) Gecko/20100101 Firefox/62.0
20180621013659

I would've set the needinfo flag for :jwatt because of bug 312286 and bug 323676, but he's unavailable.

Comment 2

[Jonathan Watt [:jwatt]]

Err, this used to work, at least long ago. I'm very surprised this hasn't come up before now!

This is controlled by gSVGEventNames:

https://dxr.mozilla.org/mozilla-central/rev/681eb7dfa324dd50403c382888929ea8b8b11b00/dom/base/nsContentUtils.cpp#3855

It seems that line hasn't changed since we switched from CVS to Mercurial though, so very possibly it's been broken for over a decade. We should certainly fix this though.

Comment 3

[Jonathan Watt [:jwatt]]

Apparently I misremembered - in fact we never did fix bug 854213, of which this is a dup I guess.