780526 - Event listener isn't called on drag an element

Status: UNCONFIRMED

(Core :: DOM: Copy & Paste and Drag & Drop, defect, P5)

Description

[Willian Gustavo Veiga]

Attachment: drag-and-drop.html

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.6) Gecko/20100101 Firefox/10.0.6 Iceweasel/10.0.6
Build ID: 20120717093035

Steps to reproduce:

I've create a code (http://jsfiddle.net/EeddL/) with an HTML div. I've registered the drag event.


Actual results:

The event isn't called in Firefox.


Expected results:

Like in Chromium (20.0.1132.57 Debian wheezy/sid (f14a6e4)) and Opera (12.01 Build 1532), the drag event listener must be called and display event.clientX and event.clientY.

Comment 1

[Alice0775 White]

The drag event will be fired if you set any data to dataTransfer in dragstart event handler.


div.addEventListener('dragstart', function(e){
      // xxxx something to set dataTransfer
      e.dataTransfer.setData('Text', e.target.textContent);
});

Comment 2

[Willian Gustavo Veiga]

You're right. Why is it just required by Firefox? What if I don't need to pass data, just move the target element, for example. In this case it wouldn't make sense (at least to me). Why event.clientX and event.clientY are always 0 just in Firefox?
Thank you.

Comment 3

[Alice0775 White]

(In reply to Willian Gustavo Veiga from comment #2)
Why event.clientX and event.clientY
> are always 0 just in Firefox?

May be Bug 505521

Comment 5

[Jens Stutte [:jstutte]]

Bulk-downgrade of unassigned, >=5 years untouched DOM/Storage bugs' priority.

If you have reason to believe this is wrong (especially for the severity), please write a comment and ni :jstutte.