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LibWeb: Implement HTMLFormElement.requestSubmit()

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This can be used to submit a form using a specific submit button.
This commit is contained in:
Tim Ledbetter 2024-02-15 18:29:53 +00:00 • committed by Tim Flynn
parent 94149db073
commit 816d24f647
Notes: sideshowbarker 2024-07-17 22:01:16 +09:00
5 changed files with 72 additions and 1 deletions
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4
Tests/LibWeb/Text/expected/form-requestSubmit.txt Normal file
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@ -0,0 +1,4 @@
Submitter is null
<INPUT id="form-associated-button" >
Exception: NotFoundError
Exception: TypeError

41
Tests/LibWeb/Text/input/form-requestSubmit.html Normal file
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@ -0,0 +1,41 @@
<!DOCTYPE html>
<span id="not-a-submit-button"></span>
<form>
<input type="Submit" id="form-associated-button" />
</form>
<input type="Submit" id="other-button" />
<script src="./include.js"></script>
<script>
test(() => {
const form = document.forms[0];
form.addEventListener("submit", event => {
event.preventDefault();
if (event.submitter) {
printElement(event.submitter);
} else {
println("Submitter is null");
}
});
form.requestSubmit();
const formAssociatedButton = document.getElementById("form-associated-button");
form.requestSubmit(formAssociatedButton);
const otherButton = document.getElementById("other-button");
try {
form.requestSubmit(otherButton);
println("FAIL");
} catch (e) {
println(`Exception: ${e.name}`);
}
const notASubmitButton = document.getElementById("not-a-submit-button");
try {
form.requestSubmit(notASubmitButton);
println("FAIL");
} catch (e) {
println(`Exception: ${e.name}`);
}
});
</script>

23
Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
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@ -319,6 +319,29 @@ WebIDL::ExceptionOr<void> HTMLFormElement::submit()
return submit_form(*this, { .from_submit_binding = true });
}
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-requestsubmit
WebIDL::ExceptionOr<void> HTMLFormElement::request_submit(JS::GCPtr<Element> submitter)
{
// 1. If submitter is not null, then:
if (submitter) {
// 1. If submitter is not a submit button, then throw a TypeError.
auto* form_associated_element = dynamic_cast<FormAssociatedElement*>(submitter.ptr());
if (!(form_associated_element && form_associated_element->is_submit_button()))
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "The submitter is not a submit button"sv };
// 2. If submitter's form owner is not this form element, then throw a "NotFoundError" DOMException.
if (form_associated_element->form() != this)
return WebIDL::NotFoundError::create(realm(), "The submitter is not owned by this form element"_fly_string);
}
// 2. Otherwise, set submitter to this form element.
else {
submitter = this;
}
// 3. Submit this form element, from submitter.
return submit_form(static_cast<HTMLElement&>(*submitter), {});
}
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-reset
void HTMLFormElement::reset()
{

3
Userland/Libraries/LibWeb/HTML/HTMLFormElement.h
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@ -65,6 +65,9 @@ public:
// NOTE: This is for the JS bindings. Use submit_form instead.
WebIDL::ExceptionOr<void> submit();
// NOTE: This is for the JS bindings. Use submit_form instead.
WebIDL::ExceptionOr<void> request_submit(JS::GCPtr<Element> submitter);
// NOTE: This is for the JS bindings. Use submit_form instead.
void reset();

2
Userland/Libraries/LibWeb/HTML/HTMLFormElement.idl
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@ -25,7 +25,7 @@ interface HTMLFormElement : HTMLElement {
getter (RadioNodeList or Element) (DOMString name);
undefined submit();
// FIXME: undefined requestSubmit(optional HTMLElement? submitter = null);
undefined requestSubmit(optional HTMLElement? submitter = null);
[CEReactions] undefined reset();
boolean checkValidity();
boolean reportValidity();