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servo: Merge #3213 - Make use of the list of Atoms in the class attribute in selector matchin (from gilles-leblanc:issue-3111)
Source-Repo: https://github.com/servo/servo Source-Revision: 97cabf204e2793fa54bcf58375af4ed8ee8c6ae4
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@ -417,6 +417,12 @@ impl<'le> TElement for LayoutElement<'le> {
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self.element.node.get_enabled_state_for_layout()
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}
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}
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fn has_class(&self, name: &str) -> bool {
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unsafe {
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self.element.has_class_for_layout(name)
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}
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}
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}
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fn get_content(content_list: &content::T) -> String {
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@ -188,6 +188,7 @@ impl<'a> AttrHelpers for JSRef<'a, Attr> {
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pub trait AttrHelpersForLayout {
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unsafe fn value_ref_forever(&self) -> &'static str;
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unsafe fn value_atom_forever(&self) -> Option<Atom>;
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unsafe fn value_tokens_forever(&self) -> Option<Items<Atom>>;
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unsafe fn local_name_atom_forever(&self) -> Atom;
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}
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@ -207,6 +208,15 @@ impl AttrHelpersForLayout for Attr {
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}
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}
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unsafe fn value_tokens_forever(&self) -> Option<Items<Atom>> {
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// cast to point to T in RefCell<T> directly
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let value = mem::transmute::<&RefCell<AttrValue>, &AttrValue>(self.value.deref());
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match *value {
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TokenListAttrValue(_, ref tokens) => Some(tokens.iter()),
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_ => None,
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}
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}
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unsafe fn local_name_atom_forever(&self) -> Atom {
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self.local_name.clone()
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}
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@ -168,6 +168,7 @@ impl Element {
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pub trait RawLayoutElementHelpers {
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unsafe fn get_attr_val_for_layout(&self, namespace: &Namespace, name: &str) -> Option<&'static str>;
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unsafe fn get_attr_atom_for_layout(&self, namespace: &Namespace, name: &str) -> Option<Atom>;
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unsafe fn has_class_for_layout(&self, name: &str) -> bool;
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}
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impl RawLayoutElementHelpers for Element {
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@ -200,6 +201,18 @@ impl RawLayoutElementHelpers for Element {
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(*attr).value_atom_forever()
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})
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}
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#[inline]
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unsafe fn has_class_for_layout(&self, name: &str) -> bool {
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let attrs: *const Vec<JS<Attr>> = mem::transmute(&self.attrs);
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(*attrs).iter().find(|attr: & &JS<Attr>| {
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let attr = attr.unsafe_get();
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(*attr).local_name_atom_forever().as_slice() == "class"
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}).map_or(false, |attr| {
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let attr = attr.unsafe_get();
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(*attr).value_tokens_forever().map(|mut tokens| { tokens.any(|atom| atom.as_slice() == name) })
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}.take().unwrap())
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}
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}
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pub trait LayoutElementHelpers {
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@ -955,4 +968,7 @@ impl<'a> style::TElement for JSRef<'a, Element> {
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let node: &JSRef<Node> = NodeCast::from_ref(self);
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node.get_enabled_state()
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}
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fn has_class(&self, name: &str) -> bool {
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(self as &AttributeHandlers).has_class(name)
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}
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}
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@ -30,5 +30,6 @@ pub trait TElement {
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fn get_id(&self) -> Option<Atom>;
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fn get_disabled_state(&self) -> bool;
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fn get_enabled_state(&self) -> bool;
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fn has_class(&self, name: &str) -> bool;
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}
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@ -626,11 +626,7 @@ fn matches_simple_selector<E:TElement,
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// TODO: cache and intern class names on elements.
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ClassSelector(ref class) => {
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let element = element.as_element();
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element.get_attr(&namespace::Null, "class")
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.map_or(false, |attr| {
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// TODO: case-sensitivity depends on the document type and quirks mode
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attr.split(SELECTOR_WHITESPACE).any(|c| c == class.as_slice())
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})
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element.has_class(class.as_slice())
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}
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AttrExists(ref attr) => {
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