Trait Element

pub trait Element:
    Sized
    + Clone
    + Debug {
    type Impl: SelectorImpl;

    // Required methods
    fn opaque(&self) -> OpaqueElement;
    fn parent_element(&self) -> Option<Self>;
    fn parent_node_is_shadow_root(&self) -> bool;
    fn containing_shadow_host(&self) -> Option<Self>;
    fn is_pseudo_element(&self) -> bool;
    fn prev_sibling_element(&self) -> Option<Self>;
    fn next_sibling_element(&self) -> Option<Self>;
    fn is_html_element_in_html_document(&self) -> bool;
    fn has_local_name(
        &self,
        local_name: &<Self::Impl as SelectorImpl>::BorrowedLocalName,
    ) -> bool;
    fn has_namespace(
        &self,
        ns: &<Self::Impl as SelectorImpl>::BorrowedNamespaceUrl,
    ) -> bool;
    fn is_same_type(&self, other: &Self) -> bool;
    fn attr_matches(
        &self,
        ns: &NamespaceConstraint<&<Self::Impl as SelectorImpl>::NamespaceUrl>,
        local_name: &<Self::Impl as SelectorImpl>::LocalName,
        operation: &AttrSelectorOperation<&<Self::Impl as SelectorImpl>::AttrValue>,
    ) -> bool;
    fn match_non_ts_pseudo_class<F>(
        &self,
        pc: &<Self::Impl as SelectorImpl>::NonTSPseudoClass,
        context: &mut MatchingContext<'_, Self::Impl>,
        flags_setter: &mut F,
    ) -> bool
       where F: FnMut(&Self, ElementSelectorFlags);
    fn match_pseudo_element(
        &self,
        pe: &<Self::Impl as SelectorImpl>::PseudoElement,
        context: &mut MatchingContext<'_, Self::Impl>,
    ) -> bool;
    fn is_link(&self) -> bool;
    fn is_html_slot_element(&self) -> bool;
    fn has_id(
        &self,
        id: &<Self::Impl as SelectorImpl>::Identifier,
        case_sensitivity: CaseSensitivity,
    ) -> bool;
    fn has_class(
        &self,
        name: &<Self::Impl as SelectorImpl>::ClassName,
        case_sensitivity: CaseSensitivity,
    ) -> bool;
    fn exported_part(
        &self,
        name: &<Self::Impl as SelectorImpl>::PartName,
    ) -> Option<<Self::Impl as SelectorImpl>::PartName>;
    fn imported_part(
        &self,
        name: &<Self::Impl as SelectorImpl>::PartName,
    ) -> Option<<Self::Impl as SelectorImpl>::PartName>;
    fn is_part(&self, name: &<Self::Impl as SelectorImpl>::PartName) -> bool;
    fn is_empty(&self) -> bool;
    fn is_root(&self) -> bool;

    // Provided methods
    fn pseudo_element_originating_element(&self) -> Option<Self> { ... }
    fn assigned_slot(&self) -> Option<Self> { ... }
    fn ignores_nth_child_selectors(&self) -> bool { ... }
}

Required Associated Types

type Impl: SelectorImpl

Required Methods

fn opaque(&self) -> OpaqueElement

Converts self into an opaque representation.

fn parent_element(&self) -> Option<Self>

fn parent_node_is_shadow_root(&self) -> bool

Whether the parent node of this element is a shadow root.

fn containing_shadow_host(&self) -> Option<Self>

The host of the containing shadow root, if any.

fn is_pseudo_element(&self) -> bool

Whether we’re matching on a pseudo-element.

fn prev_sibling_element(&self) -> Option<Self>

Skips non-element nodes

fn next_sibling_element(&self) -> Option<Self>

Skips non-element nodes

fn is_html_element_in_html_document(&self) -> bool

fn has_local_name( &self, local_name: &<Self::Impl as SelectorImpl>::BorrowedLocalName, ) -> bool

fn has_namespace( &self, ns: &<Self::Impl as SelectorImpl>::BorrowedNamespaceUrl, ) -> bool

Empty string for no namespace

fn is_same_type(&self, other: &Self) -> bool

Whether this element and the other element have the same local name and namespace.

fn attr_matches( &self, ns: &NamespaceConstraint<&<Self::Impl as SelectorImpl>::NamespaceUrl>, local_name: &<Self::Impl as SelectorImpl>::LocalName, operation: &AttrSelectorOperation<&<Self::Impl as SelectorImpl>::AttrValue>, ) -> bool

fn match_non_ts_pseudo_class<F>( &self, pc: &<Self::Impl as SelectorImpl>::NonTSPseudoClass, context: &mut MatchingContext<'_, Self::Impl>, flags_setter: &mut F, ) -> bool

where F: FnMut(&Self, ElementSelectorFlags),

fn match_pseudo_element( &self, pe: &<Self::Impl as SelectorImpl>::PseudoElement, context: &mut MatchingContext<'_, Self::Impl>, ) -> bool

fn is_link(&self) -> bool

Whether this element is a link.

fn is_html_slot_element(&self) -> bool

Returns whether the element is an HTML element.

fn has_id( &self, id: &<Self::Impl as SelectorImpl>::Identifier, case_sensitivity: CaseSensitivity, ) -> bool

fn has_class( &self, name: &<Self::Impl as SelectorImpl>::ClassName, case_sensitivity: CaseSensitivity, ) -> bool

fn exported_part( &self, name: &<Self::Impl as SelectorImpl>::PartName, ) -> Option<<Self::Impl as SelectorImpl>::PartName>

Returns the mapping from the exportparts attribute in the regular direction, that is, inner-tree -> outer-tree.

fn imported_part( &self, name: &<Self::Impl as SelectorImpl>::PartName, ) -> Option<<Self::Impl as SelectorImpl>::PartName>

Returns the mapping from the exportparts attribute in the reverse direction, that is, in an outer-tree -> inner-tree direction.

fn is_part(&self, name: &<Self::Impl as SelectorImpl>::PartName) -> bool

fn is_empty(&self) -> bool

Returns whether this element matches :empty.

That is, whether it does not contain any child element or any non-zero-length text node. See http://dev.w3.org/csswg/selectors-3/#empty-pseudo

fn is_root(&self) -> bool

Returns whether this element matches :root, i.e. whether it is the root element of a document.

Note: this can be false even if .parent_element() is None if the parent node is a DocumentFragment.

Provided Methods

fn pseudo_element_originating_element(&self) -> Option<Self>

The parent of a given pseudo-element, after matching a pseudo-element selector.

This is guaranteed to be called in a pseudo-element.

fn assigned_slot(&self) -> Option<Self>

Returns the assigned element this element is assigned to.

Necessary for the ::slotted pseudo-class.

fn ignores_nth_child_selectors(&self) -> bool

Returns whether this element should ignore matching nth child selector.

Object Safety

This trait is not object safe.

Implementors