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@@ -89,28 +89,35 @@ bool Label::is_associated_label_hovered(LabelableNode& control)
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return false;
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}
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+// https://html.spec.whatwg.org/multipage/forms.html#labeled-control
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Label* Label::label_for_control_node(LabelableNode& control)
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{
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- Label* label = nullptr;
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-
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if (!control.document().layout_node())
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- return label;
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-
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- String id = control.dom_node().attribute(HTML::AttributeNames::id);
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- if (id.is_empty())
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- return label;
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-
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- control.document().layout_node()->for_each_in_inclusive_subtree_of_type<Label>([&](auto& node) {
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- if (node.dom_node().for_() == id) {
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- label = &node;
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- return IterationDecision::Break;
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- }
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- return IterationDecision::Continue;
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- });
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+ return nullptr;
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+
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+ // The for attribute may be specified to indicate a form control with which the caption is to be associated.
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+ // If the attribute is specified, the attribute's value must be the ID of a labelable element in the
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+ // same tree as the label element. If the attribute is specified and there is an element in the tree
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+ // whose ID is equal to the value of the for attribute, and the first such element in tree order is
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+ // a labelable element, then that element is the label element's labeled control.
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+ if (auto id = control.dom_node().attribute(HTML::AttributeNames::id); !id.is_empty()) {
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+ Label* label = nullptr;
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- // FIXME: The spec also allows for associating a label with a labelable node by putting the
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- // labelable node inside the label.
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- return label;
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+ control.document().layout_node()->for_each_in_inclusive_subtree_of_type<Label>([&](auto& node) {
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+ if (node.dom_node().for_() == id) {
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+ label = &node;
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+ return IterationDecision::Break;
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+ }
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+ return IterationDecision::Continue;
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+ });
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+
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+ if (label)
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+ return label;
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+ }
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+
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+ // If the for attribute is not specified, but the label element has a labelable element descendant,
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+ // then the first such descendant in tree order is the label element's labeled control.
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+ return control.first_ancestor_of_type<Label>();
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}
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// https://html.spec.whatwg.org/multipage/forms.html#labeled-control
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Timothy Flynn