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path: root/components/script/dom/htmlslotelement.rs
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* Implement ServoLayoutNode::traversal_parent (#35338)Simon Wülker2025-02-071-56/+5
| | | | | | | | | | | | | | | | | | | | | This fixes common crash related to slottables, currently present on wpt.fyi. Previously, the traversal parent of `Text` nodes was incorrectly assumed to always be the parent or shadow host. That caused crashes inside stylo's bloom filter. Now the traversal parent is the slot that the node is assigned to, if any, and the parent/shadow host otherwise. The slottable data for Text/Element nodes is now stored in NodeRareData. This is very cheap, because NodeRareData will already be instantiated for assigned slottables anyways, because the containing_shadow_root field will be set (since assigned slottables are always in a shadow tree). This change is necessary because we need to hand out references to the assigned slot to stylo and that is not possible to do (without unsafe code) if we need to downcast the node first. As a side effect, this reduces the size of `Text` from 256 to 232 bytes, because the slottable data is no longer stored there. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Lay out the contents of slot elements (#35220)Simon Wülker2025-02-021-66/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Make Slottable match layout/alignment of NonNull<Node> Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Implement ServoLayoutElement::slotted_nodes Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Bump mozjs Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Layout the contents of slot elements Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Implement ServoLayoutElement::assigned_slot Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * implement ServoLayoutElement::traversal_parent Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Simplify slottable name update Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Don't iterate over children of shadow hosts Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Recompute slot style when contents change Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Change match_slottable to a function instead of a macro Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Fix crown errors Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update WPT expectations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Reset a slottable's assigned slot when it's removed from the slot Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Don't fire slotchange events when there's already a pending event for the ↵Simon Wülker2025-01-301-2/+28
| | | | | | | | | | | | | | | same slot (#35222) * Don't fire slotchange events if there is already a pending event for the same slot Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update WPT expectations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Use "slot" attribute for slottable name (#35191)Simon Wülker2025-01-291-73/+2
| | | | | | | | | | | | | | | | | * Implement Element::slot attribute Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Simplify slottable name update Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update WPT expectations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Fire slot change events when the slot content changes (#35137)Simon Wülker2025-01-271-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add the onslotchange attribute to ShadowRoot Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Add spec comments to MutationObserver::queue_mutation_observer_microtask Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Add DomRefCell::take Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Add spec comments to notify_mutation_observers Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Fire slotchange events when a slot changes Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * ./mach fmt Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Fix check for when to dispatch slot events Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Potentially fire slot change events in Node::remove Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update WPT expectations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * ./mach fmt Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Bump stylo Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Move "signal a slot change" into ScriptThread impl Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Implement shadow dom slots (#35013)Simon Wülker2025-01-191-0/+547
* Implement slot-related algorithms Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Hook up slot elements to DOM creation logic Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Set a slot assignment mode for servo-internal shadow roots Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Assign slots when a slottable's slot attribute changes Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Properly compute slot name Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * ./mach test-tidy Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update <slot> name when name attribute changes Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Implement fast path for Node::assign_slottables_for_a_tree assign_slottables_for_a_tree traverses all descendants of the node and is potentially very expensive. If the node is not a shadow root then assigning slottables to it won't have any effect, so we take a fast path out. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Move slottable data into ElementRareData This shrinks all element descendants back to their original size. Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Address review comments Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> * Update WPT expectations Signed-off-by: Simon Wülker <simon.wuelker@arcor.de> --------- Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>