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LibWeb: Speed up computed style calculation
Rather than destroying and rebuilding the entire document layout tree in every call to `ComputedCSSStyleDeclaration::property()`, we now just make sure that the layout tree exists. This speeds up the DOM Inspector significantly, from taking several seconds to select an element, to almost instant. :^)
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3 changed files with 8 additions and 1 deletions
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@ -400,6 +400,12 @@ void Document::force_layout()
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update_layout();
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}
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void Document::ensure_layout()
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{
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if (!m_layout_root)
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update_layout();
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}
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void Document::update_layout()
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{
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if (!browsing_context())
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