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LibWeb: Ensure EventHandler visits its mouse selection target

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We hold a raw pointer to the mouse selection target, which is a mixin-
style class inherited only by JS::Cell classes. By not visiting this
object, we sometime had a dangling reference to it after it had been
garbage collected.
This commit is contained in:
Timothy Flynn 2025-02-26 20:40:10 -05:00 • committed by Sam Atkins
commit d5be18617e
Notes: github-actions[bot] 2025-02-27 09:54:17 +00:00
7 changed files with 56 additions and 2 deletions
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3
Libraries/LibWeb/Page/EventHandler.cpp
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@ -1375,6 +1375,9 @@ void EventHandler::visit_edges(JS::Cell::Visitor& visitor) const
{
m_drag_and_drop_event_handler->visit_edges(visitor);
visitor.visit(m_mouse_event_tracking_paintable);
if (m_mouse_selection_target)
visitor.visit(m_mouse_selection_target->as_cell());
}
Unicode::Segmenter& EventHandler::word_segmenter()