[FLEX-25146] Flex tree scrolling problems with larger item renderer

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 4.0 (Release)
• Component/s: mx: Tree
• Environment: Affected OS(s): Windows; Affected OS(s): Windows XP; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 31/Aug/10 04:20
• Updated: 13/Jan/16 12:39

Description

Steps to reproduce:
Open the applicaltion,This contans flex tree withe MXTreeItemrenderer of variableRowHeight .open the last tree branch(use 1280 X 1024 resolution).

Actual Results:
1. When i open the tree last node and trying to scroll down last item , unable to reach last item and some times scroll thumb is coming out of list and adjusting some other branch in tree.

and working fine with varibale rowheight = false;
2. if itemrenderer height is large if you open tree with mouse wheel scrolling , or scroll down to bottom before branch completely expanded produces an exception.

TypeError: Error #1010: A term is undefined and has no properties.
at mx.controls::List/adjustVerticalScrollPositionDownward()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\List.as:1042]
at mx.controls::List/configureScrollBars()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\List.as:987]
at mx.controls::List/scrollHandler()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\List.as:1626]
at mx.controls::Tree/scrollHandler()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\Tree.as:2893]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:12266]
at mx.controls.scrollClasses::ScrollBar/http://www.adobe.com/2006/flex/mx/internal::dispatchScrollEvent()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\scrollClasses\ScrollBar.as:1438]
at mx.controls.scrollClasses::ScrollThumb/mouseMoveHandler()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\controls\scrollClasses\ScrollThumb.as:216]

Thank you.

Regards
Shashidhar