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Stop generating flows under display: none.

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Because this is a bottom-up traversal it can generates flows and throw them away. To prevent that, this cascades an internal `-servo-under-display-none` property and then checks that during flow construction.  Fixes #1536.
This commit is contained in:
Matt Brubeck 2016-05-25 10:48:09 -07:00
parent 116faa7617
commit 5c09e26e55
5 changed files with 50 additions and 10 deletions
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components/layout/traversal.rs
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@ -72,7 +72,7 @@ impl<'lc, 'ln> DomTraversalContext<ServoLayoutNode<'ln>> for RecalcStyleAndConst
/// A bottom-up, parallelizable traversal.
pub trait PostorderNodeMutTraversal<ConcreteThreadSafeLayoutNode: ThreadSafeLayoutNode> {
/// The operation to perform. Return true to continue or false to stop.
fn process(&mut self, node: &ConcreteThreadSafeLayoutNode) -> bool;
fn process(&mut self, node: &ConcreteThreadSafeLayoutNode);
}
/// The flow construction traversal, which builds flows for styled nodes.