377292 - xulrunner 1.9a3 breaks customizing scrollbars with XBL

Status: RESOLVED INCOMPLETE

(Toolkit Graveyard :: XULRunner, defect)

Description

[Bernhard Rosenkraenzer]

User-Agent:       Mozilla/5.0 (compatible; Konqueror/3.5; en_US) KHTML/3.5.6 (like Gecko)
Build Identifier: MOZILLA_1_9a3_RELEASE

When customizing scrollbars with XBL (e.g. using the example at http://xulfr.org/wiki/RessourcesLibs/xbl_scrollable ), xulrunner 1.8 works as expected. In 1.9a3, the constructor for the XBL scrollbar never gets called and a standard scrollbar is displayed.

Reproducible: Always

Comment 1

[Neil Deakin]

How is the stylesheet attached in this example?

Comment 2

[Bernhard Rosenkraenzer]

<?xml-stylesheet href="css/sbar.css" type="text/css"?>

Comment 3

[Bernhard Rosenkraenzer]

Looks like the cause of the problem is rather complicated.

We have a top-level xul file that does

<script src="js/functions.js">

then an XBL file based on the posted example that makes use of one of the functions defined in js/functions.js.

Apparently in 1.9, calling js functions across different modules works differently.

Comment 4

[John Mellor (Jomel)]

This was (deliberately) caused by Bug 369676.

I have the same problem, I used the

scrollbar { -moz-binding: url(chrome://blah/code-to-expose-scrollbar-dom.xml) }

trick so I could script overflow:auto scrollbars. Adjusting curpos was the most important part, but I also used this to set increment and pageincrement to appropriate values.

Comment 5

[John Mellor (Jomel)]

To clarify, (as I understand it) since scrollbars are native-anonymous there is no way to access them via normal getAnonymousNodes-style methods, so applying a binding like this was the _only_ way to script an overflow-auto scrollbar. Wrapping elements in a <scrollbox> isn't always possible, especially when trying to add overflow:auto to elements defined elsewhere (e.g. parts of the browser), as this would often break other scripts etc.

See also Bug 30522 and Bug 243128 which were trying to make access to scrollbars easier - though both seem to have been abandoned.

Comment 6

[Boris Zbarsky [:bzbarsky]]

As bug 369676 says, you can still style scrollbars.  You just have to do it from a UA stylesheet....

Comment 7

[Benjamin Smedberg]

XULRunner has been removed from the Mozilla tree: see https://groups.google.com/forum/#!topic/mozilla.dev.platform/_rFMunG2Bgw for context.

I am closing all the bugs currently in the XULRunner bugzilla component, in preparation for moving this component to the graveyard. If this bug is still valid in a XULRunner-less world, it will need to be moved to a different bugzilla component to be reopened.