304933 - When binding is changed then previous implementation and handlers aren't removed from bound element

Status: RESOLVED FIXED

(Core :: XBL, defect)

Description

[alexander :surkov (:asurkov)]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; ru-RU; rv:1.7.8) Gecko/20050511 Firefox/1.0.4 (ax)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b3) Gecko/20050719 SeaMonkey/1.0a

I change binding on some element but when binding is changed then implementation
and handlers of previous binding is not removed.

Reproducible: Always

Comment 1

[alexander :surkov (:asurkov)]

Attachment: bindings

Comment 2

[alexander :surkov (:asurkov)]

Attachment: binding css

Comment 3

[alexander :surkov (:asurkov)]

Attachment: testcase

Comment 4

[Boris Zbarsky [:bzbarsky]]

This is a known issue.  The only feasible solution, given xbl:implements, is to
disallow removal of bindings which install an implementation (removal of
presentation-only bindings is ok, of course).  We plan to do just that sometime
in the near future, hopefully, and there are bugs on it.

Comment 5

[John Gaunt (redfive)]

Progressmeter is one xbl object that in the current code changes it's binding based on state. It never gets deleted. This uncovered bug 352260.

Comment 6

[John Gaunt (redfive)]

Whoops, that was supposed to be bug 363163

Comment 7

[Boris Zbarsky [:bzbarsky]]

Fixed in bug 398135 and bug 403162.