117131 - [FIXr]In DOMCharacterDataModified Mutation event prevValue is always blank

Status: RESOLVED FIXED

(Core :: DOM: Events, defect, P2)

Description

[Vladimir Ermakov]

In DOMCharacterDataModified attribute prevValue is suppose to contain the
previous data value, before it was changed, but is actually blank...

Comment 1

[Vladimir Ermakov]

Attachment: Testcase

Comment 2

[joki (gone)]

Mutation event bugs -> hyatt

Comment 3

[Vladimir Ermakov]

*** Bug 157056 has been marked as a duplicate of this bug. ***

Comment 4

[Gérard Talbot]

The prevValue event attribute is still blank when using another specific
testcase for testing the DOMCharacterDataModified Mutation event.
No bug, no blank value when trying with Opera 7.50 PR1 build 3494.
Using Mozilla 1.7alpha build 2004011009 under XP Pro SP1 here.

Comment 5

[Boris Zbarsky [:bzbarsky]]

Attachment: Possible patch

Comment 6

[Boris Zbarsky [:bzbarsky]]

Comment on attachment 141291 [details] [diff] [review]
Possible patch

Not terribly efficient, but mutation events just aren't efficient.  I tried
making GetCurrentValueAtom create the ASCII version directly, but the codesize
(logic like in GetData), but the codesize there was much bigger (I wonder
why....), so I figured it wasn't worth it.

Comment 7

[Boris Zbarsky [:bzbarsky]]

Checked in.