Trait selectors::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 first_element_child(&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(
        &self,
        pc: &<Self::Impl as SelectorImpl>::NonTSPseudoClass,
        context: &mut MatchingContext<'_, Self::Impl>,
    ) -> bool;
    fn match_pseudo_element(
        &self,
        pe: &<Self::Impl as SelectorImpl>::PseudoElement,
        context: &mut MatchingContext<'_, Self::Impl>,
    ) -> bool;
    fn apply_selector_flags(&self, flags: ElementSelectorFlags);
    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>::Identifier,
        case_sensitivity: CaseSensitivity,
    ) -> bool;
    fn has_custom_state(
        &self,
        name: &<Self::Impl as SelectorImpl>::Identifier,
    ) -> bool;
    fn imported_part(
        &self,
        name: &<Self::Impl as SelectorImpl>::Identifier,
    ) -> Option<<Self::Impl as SelectorImpl>::Identifier>;
    fn is_part(&self, name: &<Self::Impl as SelectorImpl>::Identifier) -> bool;
    fn is_empty(&self) -> bool;
    fn is_root(&self) -> bool;
    fn add_element_unique_hashes(&self, filter: &mut BloomFilter) -> bool;

    // Provided methods
    fn pseudo_element_originating_element(&self) -> Option<Self> { ... }
    fn has_attr_in_no_namespace(
        &self,
        local_name: &<Self::Impl as SelectorImpl>::LocalName,
    ) -> bool { ... }
    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 first_element_child(&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( &self, pc: &<Self::Impl as SelectorImpl>::NonTSPseudoClass, context: &mut MatchingContext<'_, Self::Impl>, ) -> bool

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

fn apply_selector_flags(&self, flags: ElementSelectorFlags)

Sets selector flags on the elemnt itself or the parent, depending on the flags, which indicate what kind of work may need to be performed when DOM state changes.

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>::Identifier, case_sensitivity: CaseSensitivity, ) -> bool

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

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

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>::Identifier) -> 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.

fn add_element_unique_hashes(&self, filter: &mut BloomFilter) -> bool

Add hashes unique to this element to the given filter, returning true if any got added.

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 has_attr_in_no_namespace( &self, local_name: &<Self::Impl as SelectorImpl>::LocalName, ) -> bool

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