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LibWeb: Implement the HTMLOutputElement.htmlFor attribute

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This returns a DOMTokenList that reflects the `for` attribute.
This commit is contained in:
Tim Ledbetter 2024-05-16 18:54:42 +01:00 • committed by Andreas Kling
commit 3dc86747f0
Notes: sideshowbarker 2024-07-17 03:03:37 +09:00
5 changed files with 61 additions and 1 deletions
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9
Tests/LibWeb/Text/expected/HTML/HTMLOutputElement-htmlfor.txt Normal file
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@ -0,0 +1,9 @@
output.htmlFor is initially empty: true
output.htmlFor always returns the same object: true
output.htmlFor after setting output.htmlFor to "a": a
for attribute value after setting output.htmlFor to "a": a
output.htmlFor after calling output.setAttribute("for", "b"): b
output.htmlFor after setting output.htmlFor to "c d": c d
for attribute value after setting output.htmlFor to "c d": c d
output.htmlFor.contains("c"): true
output.htmlFor.contains("a"): false

20
Tests/LibWeb/Text/input/HTML/HTMLOutputElement-htmlfor.html Normal file
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@ -0,0 +1,20 @@
<!DOCTYPE html>
<script src="../include.js"></script>
<script>
test(() => {
const outputElement = document.createElement("output");
const htmlFor = outputElement.htmlFor;
println(`output.htmlFor is initially empty: ${htmlFor.length === 0}`);
println(`output.htmlFor always returns the same object: ${outputElement.htmlFor === htmlFor}`);
outputElement.htmlFor = "a";
println(`output.htmlFor after setting output.htmlFor to "a": ${outputElement.htmlFor}`);
println(`for attribute value after setting output.htmlFor to "a": ${outputElement.getAttribute("for")}`);
outputElement.setAttribute("for", "b");
println(`output.htmlFor after calling output.setAttribute("for", "b"): ${outputElement.htmlFor}`);
outputElement.htmlFor = "c d";
println(`output.htmlFor after setting output.htmlFor to "c d": ${outputElement.htmlFor}`);
println(`for attribute value after setting output.htmlFor to "c d": ${outputElement.getAttribute("for")}`);
println(`output.htmlFor.contains("c"): ${outputElement.htmlFor.contains("c")}`);
println(`output.htmlFor.contains("a"): ${outputElement.htmlFor.contains("a")}`);
});
</script>

24
Userland/Libraries/LibWeb/HTML/HTMLOutputElement.cpp
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@ -6,6 +6,7 @@
#include <LibWeb/Bindings/HTMLOutputElementPrototype.h> #include <LibWeb/Bindings/HTMLOutputElementPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h> #include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/DOM/DOMTokenList.h>
#include <LibWeb/HTML/HTMLOutputElement.h> #include <LibWeb/HTML/HTMLOutputElement.h>
namespace Web::HTML { namespace Web::HTML {
@ -25,6 +26,29 @@ void HTMLOutputElement::initialize(JS::Realm& realm)
WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOutputElement); WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOutputElement);
} }
void HTMLOutputElement::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_html_for);
}
void HTMLOutputElement::form_associated_element_attribute_changed(FlyString const& name, Optional<String> const& value)
{
if (name == HTML::AttributeNames::for_) {
if (m_html_for)
m_html_for->associated_attribute_changed(value.value_or(String {}));
}
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-htmlfor
JS::NonnullGCPtr<DOM::DOMTokenList> HTMLOutputElement::html_for()
{
// The htmlFor IDL attribute must reflect the for content attribute.
if (!m_html_for)
m_html_for = DOM::DOMTokenList::create(*this, HTML::AttributeNames::for_);
return *m_html_for;
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-defaultvalue // https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-defaultvalue
String HTMLOutputElement::default_value() const String HTMLOutputElement::default_value() const
{ {

7
Userland/Libraries/LibWeb/HTML/HTMLOutputElement.h
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@ -23,6 +23,8 @@ class HTMLOutputElement final
public: public:
virtual ~HTMLOutputElement() override; virtual ~HTMLOutputElement() override;
JS::NonnullGCPtr<DOM::DOMTokenList> html_for();
String const& type() const String const& type() const
{ {
static String const output = "output"_string; static String const output = "output"_string;
@ -58,6 +60,11 @@ private:
HTMLOutputElement(DOM::Document&, DOM::QualifiedName); HTMLOutputElement(DOM::Document&, DOM::QualifiedName);
virtual void initialize(JS::Realm&) override; virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor& visitor) override;
virtual void form_associated_element_attribute_changed(FlyString const& name, Optional<String> const& value) override;
JS::GCPtr<DOM::DOMTokenList> m_html_for;
Optional<String> m_default_value_override {}; Optional<String> m_default_value_override {};
}; };

2
Userland/Libraries/LibWeb/HTML/HTMLOutputElement.idl
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@ -6,7 +6,7 @@
interface HTMLOutputElement : HTMLElement { interface HTMLOutputElement : HTMLElement {
[HTMLConstructor] constructor(); [HTMLConstructor] constructor();
// FIXME: [SameObject, PutForwards=value] readonly attribute DOMTokenList htmlFor; [SameObject, PutForwards=value] readonly attribute DOMTokenList htmlFor;
readonly attribute HTMLFormElement? form; readonly attribute HTMLFormElement? form;
[CEReactions, Reflect] attribute DOMString name; [CEReactions, Reflect] attribute DOMString name;