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/* 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 https://mozilla.org/MPL/2.0/. */
use script_layout_interface::wrapper_traits::LayoutNode;
use style::context::{SharedStyleContext, StyleContext};
use style::data::ElementData;
use style::dom::{NodeInfo, TElement, TNode};
use style::traversal::{recalc_style_at, DomTraversal, PerLevelTraversalData};
use crate::context::LayoutContext;
use crate::dom::DOMLayoutData;
pub struct RecalcStyle<'a> {
context: LayoutContext<'a>,
}
impl<'a> RecalcStyle<'a> {
pub fn new(context: LayoutContext<'a>) -> Self {
RecalcStyle { context }
}
pub fn context(&self) -> &LayoutContext<'a> {
&self.context
}
pub fn destroy(self) -> LayoutContext<'a> {
self.context
}
}
#[allow(unsafe_code)]
impl<'dom, E> DomTraversal<E> for RecalcStyle<'_>
where
E: TElement,
E::ConcreteNode: 'dom + LayoutNode<'dom>,
{
fn process_preorder<F>(
&self,
traversal_data: &PerLevelTraversalData,
context: &mut StyleContext<E>,
node: E::ConcreteNode,
note_child: F,
) where
F: FnMut(E::ConcreteNode),
{
unsafe {
node.initialize_style_and_layout_data::<DOMLayoutData>();
if !node.is_text_node() {
let el = node.as_element().unwrap();
let mut data = el.mutate_data().unwrap();
recalc_style_at(self, traversal_data, context, el, &mut data, note_child);
el.unset_dirty_descendants();
}
}
}
#[inline]
fn needs_postorder_traversal() -> bool {
false
}
fn process_postorder(&self, _style_context: &mut StyleContext<E>, _node: E::ConcreteNode) {
panic!("this should never be called")
}
fn text_node_needs_traversal(node: E::ConcreteNode, parent_data: &ElementData) -> bool {
node.layout_data().is_none() || !parent_data.damage.is_empty()
}
fn shared_context(&self) -> &SharedStyleContext {
&self.context.style_context
}
}
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