[FLEX-17183] Virtualization: Removing the only item of a DataGroup throws an RTE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK Previous
• Fix Version/s: Adobe Flex SDK Previous
• Component/s: Spark: DataGroup
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Browser: Firefox 2.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 16/Jan/09 17:05
• Updated: 27/Aug/14 16:02
• Resolved: 22/Jan/09 13:03

Description

Steps to reproduce:
1. Run attached "Bug_removeItems.swf"
2. Click "remove first item"

The equivalent bug exists with a virtualized HorizontalLayout.

Actual Results:

An RTE is thrown:

RangeError: Error #1125: The index -1 is out of range 0.
at mx.layout::LinearLayoutVector/getMajorSize()[E:\dev\trunk\frameworks\projects\flex4\src\mx\layout\LinearLayoutVector.as:254]
at mx.layout::LinearLayoutVector/end()[E:\dev\trunk\frameworks\projects\flex4\src\mx\layout\LinearLayoutVector.as:370]
at mx.layout::VerticalLayout/measureVirtual()[E:\dev\trunk\frameworks\projects\flex4\src\mx\layout\VerticalLayout.as:910]
at mx.layout::VerticalLayout/measure()[E:\dev\trunk\frameworks\projects\flex4\src\mx\layout\VerticalLayout.as:965]
at mx.components.baseClasses::GroupBase/measure()[E:\dev\trunk\frameworks\projects\flex4\src\mx\components\baseClasses\GroupBase.as:638]
at mx.core::UIComponent/measureSizes()[E:\dev\trunk\frameworks\projects\framework\src\mx\core\UIComponent.as:6326]
at mx.core::UIComponent/validateSize()[E:\dev\trunk\frameworks\projects\framework\src\mx\core\UIComponent.as:6257]
at mx.managers::LayoutManager/validateSize()[E:\dev\trunk\frameworks\projects\framework\src\mx\managers\LayoutManager.as:579]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\trunk\frameworks\projects\framework\src\mx\managers\LayoutManager.as:692]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[E:\dev\trunk\frameworks\projects\framework\src\mx\core\UIComponent.as:9065]
at mx.core::UIComponent/callLaterDispatcher()[E:\dev\trunk\frameworks\projects\framework\src\mx\core\UIComponent.as:9005]

Expected Results:

No RTE should be thrown. It should work as it does with virtualization turned off.

Workaround (if any):

Issue Links

• relates to: FLEX-28291 Linear Vector Layout on the ComboBox