Accessible*
XULTreeColumAccessible::GetSiblingAtOffset(int32_t aOffset,
nsresult* aError) const
{
if (aOffset < 0)
return XULColumAccessible::GetSiblingAtOffset(aOffset, aError);
if (aError)
*aError = NS_OK; // fail peacefully
nsCOMPtr<nsITreeBoxObject> tree = nsCoreUtils::GetTreeBoxObject(mContent);
if (tree) {
nsCOMPtr<nsITreeView> treeView;
tree->GetView(getter_AddRefs(treeView));
if (treeView) {
int32_t rowCount = 0;
treeView->GetRowCount(&rowCount);
if (rowCount > 0 && aOffset <= rowCount) {
XULTreeAccessible* treeAcc = Parent()->AsXULTree();
if (treeAcc)
return treeAcc->GetTreeItemAccessible(aOffset - 1);
}
}
}
return nullptr;
}
Relation
XULTreeItemAccessibleBase::RelationByType(RelationType aType)
{
switch (aType) {
case RelationType::NODE_CHILD_OF: {
int32_t parentIndex = -1;
if (!NS_SUCCEEDED(mTreeView->GetParentIndex(mRow, &parentIndex)))
return Relation();
if (parentIndex == -1)
return Relation(mParent);
XULTreeAccessible* treeAcc = mParent->AsXULTree();
return Relation(treeAcc->GetTreeItemAccessible(parentIndex));
}
case RelationType::NODE_PARENT_OF: {
bool isTrue = false;
if (NS_FAILED(mTreeView->IsContainerEmpty(mRow, &isTrue)) || isTrue)
return Relation();
if (NS_FAILED(mTreeView->IsContainerOpen(mRow, &isTrue)) || !isTrue)
return Relation();
XULTreeAccessible* tree = mParent->AsXULTree();
return Relation(new XULTreeItemIterator(tree, mTreeView, mRow));
}
default:
return Relation();
}
}
Relation
XULTreeItemAccessibleBase::RelationByType(uint32_t aType)
{
if (!mTreeView)
return Relation();
if (aType != nsIAccessibleRelation::RELATION_NODE_CHILD_OF)
return Relation();
int32_t parentIndex = -1;
if (!NS_SUCCEEDED(mTreeView->GetParentIndex(mRow, &parentIndex)))
return Relation();
if (parentIndex == -1)
return Relation(mParent);
XULTreeAccessible* treeAcc = mParent->AsXULTree();
return Relation(treeAcc->GetTreeItemAccessible(parentIndex));
}