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Eliminate HAS_CHANGED in favor of explicit RestyleDamage.

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This commit is contained in:
Bobby Holley 2016-11-14 15:32:35 -08:00
parent f1043f6305
commit b31ed2298c
5 changed files with 18 additions and 36 deletions
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15
components/layout/traversal.rs
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@ -118,16 +118,13 @@ impl<'lc, N> DomTraversalContext<N> for RecalcStyleAndConstructFlows<'lc>
return false;
}
// If this node has been marked as damaged in some way, we need to
// traverse it for layout.
if child.has_changed() {
return true;
}
match child.as_element() {
Some(el) => el.styling_mode() != StylingMode::Stop,
// Aside from the has_changed case above, we want to traverse non-element children
// in two additional cases:
// Elements should be traversed if they need styling or flow construction.
Some(el) => el.styling_mode() != StylingMode::Stop ||
el.as_node().to_threadsafe().restyle_damage() != RestyleDamage::empty(),
// Text nodes never need styling. However, there are two cases they may need
// flow construction:
// (1) They child doesn't yet have layout data (preorder traversal initializes it).
// (2) The parent element has restyle damage (so the text flow also needs fixup).
None => child.get_raw_data().is_none() ||