// Returns true if the element's reverse index is (n * a) + b for a given integer value of n.
bool StyleSheetNodeSelectorNthLastChild::IsApplicable(const Element* element, int a, int b)
{
Element* parent = element->GetParentNode();
if (parent == NULL)
return false;
// Start counting elements until we find this one.
int element_index = 1;
for (int i = parent->GetNumChildren() - 1; i >= 0; --i)
{
Element* child = parent->GetChild(i);
// Skip text nodes.
if (dynamic_cast< ElementText* >(child) != NULL)
continue;
// If we've found our element, then break; the current index is our element's index.
if (child == element)
break;
if (child->GetDisplay() == DISPLAY_NONE)
continue;
element_index++;
}
return IsNth(a, b, element_index);
}
// Returns true if the element index is (n * a) + b for a given integer value of n.
bool StyleSheetNodeSelectorNthOfType::IsApplicable(const Element* element, int a, int b)
{
Element* parent = element->GetParentNode();
if (parent == NULL)
return false;
// Start counting elements until we find this one.
int element_index = 1;
for (int i = 0; i < parent->GetNumChildren(); ++i)
{
Element* child = parent->GetChild(i);
// If we've found our element, then break; the current index is our element's index.
if (child == element)
break;
// Skip nodes that don't share our tag.
if (child->GetTagName() != element->GetTagName() ||
child->GetProperty< int >(DISPLAY) == DISPLAY_NONE)
continue;
element_index++;
}
return IsNth(a, b, element_index);
}
