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LibWeb: Don't crash when resolving style of grid template properties

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Previously, attempting to get the computed value for a
grid-template-rows or grid-template-columns property would cause a crash
if the element had no associated paintable.
This commit is contained in:
Tim Ledbetter
2024-09-12 16:28:31 +01:00
committed by Tim Ledbetter
parent fa907029ee
commit 779de840af
3 changed files with 26 additions and 6 deletions
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16
Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
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@@ -523,14 +523,18 @@ RefPtr<CSSStyleValue const> ResolvedCSSStyleDeclaration::style_value_for_propert
// For grid-template-columns and grid-template-rows the resolved value is the used value.
// https://www.w3.org/TR/css-grid-2/#resolved-track-list-standalone
if (property_id == PropertyID::GridTemplateColumns) {
auto const& paintable_box = verify_cast<Painting::PaintableBox const>(*layout_node.paintable());
if (auto used_values_for_grid_template_columns = paintable_box.used_values_for_grid_template_columns()) {
return used_values_for_grid_template_columns;
if (layout_node.paintable()) {
auto const& paintable_box = verify_cast<Painting::PaintableBox const>(*layout_node.paintable());
if (auto used_values_for_grid_template_columns = paintable_box.used_values_for_grid_template_columns()) {
return used_values_for_grid_template_columns;
}
}
} else if (property_id == PropertyID::GridTemplateRows) {
auto const& paintable_box = verify_cast<Painting::PaintableBox const>(*layout_node.paintable());
if (auto used_values_for_grid_template_rows = paintable_box.used_values_for_grid_template_rows()) {
return used_values_for_grid_template_rows;
if (layout_node.paintable()) {
auto const& paintable_box = verify_cast<Painting::PaintableBox const>(*layout_node.paintable());
if (auto used_values_for_grid_template_rows = paintable_box.used_values_for_grid_template_rows()) {
return used_values_for_grid_template_rows;
}
}
}