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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /servo/components/style/gecko/traversal.rs | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'servo/components/style/gecko/traversal.rs')
-rw-r--r-- | servo/components/style/gecko/traversal.rs | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/servo/components/style/gecko/traversal.rs b/servo/components/style/gecko/traversal.rs new file mode 100644 index 0000000000..71d1a2f949 --- /dev/null +++ b/servo/components/style/gecko/traversal.rs @@ -0,0 +1,53 @@ +/* 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/. */ + +//! Gecko-specific bits for the styling DOM traversal. + +use crate::context::{SharedStyleContext, StyleContext}; +use crate::dom::{TElement, TNode}; +use crate::gecko::wrapper::{GeckoElement, GeckoNode}; +use crate::traversal::{recalc_style_at, DomTraversal, PerLevelTraversalData}; + +/// This is the simple struct that Gecko uses to encapsulate a DOM traversal for +/// styling. +pub struct RecalcStyleOnly<'a> { + shared: SharedStyleContext<'a>, +} + +impl<'a> RecalcStyleOnly<'a> { + /// Create a `RecalcStyleOnly` traversal from a `SharedStyleContext`. + pub fn new(shared: SharedStyleContext<'a>) -> Self { + RecalcStyleOnly { shared: shared } + } +} + +impl<'recalc, 'le> DomTraversal<GeckoElement<'le>> for RecalcStyleOnly<'recalc> { + fn process_preorder<F>( + &self, + traversal_data: &PerLevelTraversalData, + context: &mut StyleContext<GeckoElement<'le>>, + node: GeckoNode<'le>, + note_child: F, + ) where + F: FnMut(GeckoNode<'le>), + { + if let Some(el) = node.as_element() { + let mut data = unsafe { el.ensure_data() }; + recalc_style_at(self, traversal_data, context, el, &mut data, note_child); + } + } + + fn process_postorder(&self, _: &mut StyleContext<GeckoElement<'le>>, _: GeckoNode<'le>) { + unreachable!(); + } + + /// We don't use the post-order traversal for anything. + fn needs_postorder_traversal() -> bool { + false + } + + fn shared_context(&self) -> &SharedStyleContext { + &self.shared + } +} |