mirror of
https://github.com/servo/servo.git
synced 2025-06-14 03:14:29 +00:00
77 lines
2.9 KiB
Rust
77 lines
2.9 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
//! Traits that nodes must implement. Breaks the otherwise-cyclic dependency between layout and
|
|
//! style.
|
|
|
|
use attr::{AttrSelectorOperation, NamespaceConstraint};
|
|
use matching::{ElementSelectorFlags, MatchingContext};
|
|
use parser::SelectorImpl;
|
|
|
|
pub trait Element: Sized {
|
|
type Impl: SelectorImpl;
|
|
|
|
fn parent_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 pseudo_element_originating_element(&self) -> Option<Self> {
|
|
self.parent_element()
|
|
}
|
|
|
|
/// Skips non-element nodes
|
|
fn first_child_element(&self) -> Option<Self>;
|
|
|
|
/// Skips non-element nodes
|
|
fn last_child_element(&self) -> Option<Self>;
|
|
|
|
/// Skips non-element nodes
|
|
fn prev_sibling_element(&self) -> Option<Self>;
|
|
|
|
/// Skips non-element nodes
|
|
fn next_sibling_element(&self) -> Option<Self>;
|
|
|
|
fn is_html_element_in_html_document(&self) -> bool;
|
|
|
|
fn get_local_name(&self) -> &<Self::Impl as SelectorImpl>::BorrowedLocalName;
|
|
|
|
/// Empty string for no namespace
|
|
fn get_namespace(&self) -> &<Self::Impl as SelectorImpl>::BorrowedNamespaceUrl;
|
|
|
|
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,
|
|
flags_setter: &mut F) -> bool
|
|
where F: FnMut(&Self, ElementSelectorFlags);
|
|
|
|
fn match_pseudo_element(&self,
|
|
pe: &<Self::Impl as SelectorImpl>::PseudoElement,
|
|
context: &mut MatchingContext)
|
|
-> bool;
|
|
|
|
fn get_id(&self) -> Option<<Self::Impl as SelectorImpl>::Identifier>;
|
|
|
|
fn has_class(&self, name: &<Self::Impl as SelectorImpl>::ClassName) -> 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_empty(&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 is_root(&self) -> bool;
|
|
}
|