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Bug 359845 - crash [@nsXULTreeitemAccessibleWrap::GetRole] probably !mColumn, r=Evan.Yan, a=dsicore

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This commit is contained in:
surkov.alexander@gmail.com 2007-09-18 19:54:44 -07:00
parent 68e016bee3
commit 79b7d95d32
1 changed files with 11 additions and 3 deletions
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14
accessible/src/xul/nsXULTreeAccessible.cpp
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@ -504,8 +504,12 @@ NS_IMETHODIMP nsXULTreeAccessible::SelectAllSelection(PRBool *_retval)
return NS_OK;
}
NS_IMETHODIMP nsXULTreeAccessible::GetCachedTreeitemAccessible(PRInt32 aRow, nsITreeColumn* aColumn, nsIAccessible** aAccessible)
NS_IMETHODIMP
nsXULTreeAccessible::GetCachedTreeitemAccessible(PRInt32 aRow,
nsITreeColumn* aColumn,
nsIAccessible** aAccessible)
{
NS_ENSURE_ARG_POINTER(aAccessible);
*aAccessible = nsnull;
NS_ASSERTION(mAccessNodeCache, "No accessibility cache for tree");
@ -524,8 +528,12 @@ NS_IMETHODIMP nsXULTreeAccessible::GetCachedTreeitemAccessible(PRInt32 aRow, nsI
cols->GetKeyColumn(getter_AddRefs(col));
}
if (col)
col->GetIndex(&columnIndex);
// Do not create accessible for treeitem if there is no column in the tree
// because it doesn't render treeitems properly.
if (!col)
return NS_OK;
col->GetIndex(&columnIndex);
nsCOMPtr<nsIAccessNode> accessNode;
GetCacheEntry(*mAccessNodeCache, (void*)(aRow * kMaxTreeColumns + columnIndex), getter_AddRefs(accessNode));