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ctrlutil: fix NextControl()

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With this helper we may iterate over the control list and end up
not having any control that match the search criteria (namely: tabStop,
visible and enabled). In that case an index out of bounds error will
happen.

This patch checks for the resulting list and return if no control's
found.

Signed-off-by: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
This commit is contained in:
Leandro Dorileo 2018-06-27 15:54:31 -07:00
parent 9979c8781a
commit a1babea8cb
1 changed files with 4 additions and 0 deletions
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4
ctrlutil.go
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@ -218,6 +218,10 @@ func NextControl(parent Control, curr Control, next bool) Control {
linear := getLinearControlList(parent, fnTab)
if len(linear) == 0 {
return nil
}
var pIndex, nIndex int
for i, ch := range linear {