[FLEX-20647] LinkBar bug with fix

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK 3.2 (Release)
• Component/s: mx: LinkBar
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 18/Aug/09 12:03
• Updated: 18/Aug/09 12:03

Description

Steps to reproduce:

N/A its a line of code that needs fixing.
The problem is in this function :

override protected function hiliteSelectedNavItem(index:int):void
{
var child:Button;

// Un-hilite the current selection.
if (selectedIndex != -1 && selectedIndex < numChildren)
{
child = Button(getChildAt(selectedIndex));
child.enabled = true;
}

// Set new index.
super.selectedIndex = index;

// Hilite the new selection.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
child = Button(getChildAt(selectedIndex));
child.enabled = false;
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
}

the highlighted 2 lines should be in a conditional as selectedIndex might be -1 and getchildat(-1) will break.
Solution:

replace these two lines with:

if (selectedIndex != -1)
{
child = Button(getChildAt(selectedIndex));
child.enabled = false;
}