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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/html/HTMLFieldSetElement.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/html/HTMLFieldSetElement.cpp')
-rw-r--r--dom/html/HTMLFieldSetElement.cpp314
1 files changed, 314 insertions, 0 deletions
diff --git a/dom/html/HTMLFieldSetElement.cpp b/dom/html/HTMLFieldSetElement.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/BasicEvents.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "mozilla/dom/CustomElementRegistry.h"
+#include "mozilla/dom/HTMLFieldSetElement.h"
+#include "mozilla/dom/HTMLFieldSetElementBinding.h"
+#include "nsContentList.h"
+#include "nsQueryObject.h"
+
+NS_IMPL_NS_NEW_HTML_ELEMENT(FieldSet)
+
+namespace mozilla::dom {
+
+HTMLFieldSetElement::HTMLFieldSetElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : nsGenericHTMLFormControlElement(std::move(aNodeInfo),
+ FormControlType::Fieldset),
+ mElements(nullptr),
+ mFirstLegend(nullptr),
+ mInvalidElementsCount(0) {
+ // <fieldset> is always barred from constraint validation.
+ SetBarredFromConstraintValidation(true);
+
+ // We start out enabled and valid.
+ AddStatesSilently(ElementState::ENABLED | ElementState::VALID);
+}
+
+HTMLFieldSetElement::~HTMLFieldSetElement() {
+ uint32_t length = mDependentElements.Length();
+ for (uint32_t i = 0; i < length; ++i) {
+ mDependentElements[i]->ForgetFieldSet(this);
+ }
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLFieldSetElement,
+ nsGenericHTMLFormControlElement, mValidity,
+ mElements)
+
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(HTMLFieldSetElement,
+ nsGenericHTMLFormControlElement,
+ nsIConstraintValidation)
+
+NS_IMPL_ELEMENT_CLONE(HTMLFieldSetElement)
+
+bool HTMLFieldSetElement::IsDisabledForEvents(WidgetEvent* aEvent) {
+ if (StaticPrefs::dom_forms_fieldset_disable_only_descendants_enabled()) {
+ return false;
+ }
+ return IsElementDisabledForEvents(aEvent, nullptr);
+}
+
+// nsIContent
+void HTMLFieldSetElement::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
+ // Do not process any DOM events if the element is disabled.
+ aVisitor.mCanHandle = false;
+ if (IsDisabledForEvents(aVisitor.mEvent)) {
+ return;
+ }
+
+ nsGenericHTMLFormControlElement::GetEventTargetParent(aVisitor);
+}
+
+void HTMLFieldSetElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
+ const nsAttrValue* aValue,
+ const nsAttrValue* aOldValue,
+ nsIPrincipal* aSubjectPrincipal,
+ bool aNotify) {
+ if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::disabled) {
+ // This *has* to be called *before* calling FieldSetDisabledChanged on our
+ // controls, as they may depend on our disabled state.
+ UpdateDisabledState(aNotify);
+ }
+
+ return nsGenericHTMLFormControlElement::AfterSetAttr(
+ aNameSpaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
+}
+
+void HTMLFieldSetElement::GetType(nsAString& aType) const {
+ aType.AssignLiteral("fieldset");
+}
+
+/* static */
+bool HTMLFieldSetElement::MatchListedElements(Element* aElement,
+ int32_t aNamespaceID,
+ nsAtom* aAtom, void* aData) {
+ nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(aElement);
+ return formControl;
+}
+
+nsIHTMLCollection* HTMLFieldSetElement::Elements() {
+ if (!mElements) {
+ mElements =
+ new nsContentList(this, MatchListedElements, nullptr, nullptr, true);
+ }
+
+ return mElements;
+}
+
+// nsIFormControl
+
+nsresult HTMLFieldSetElement::Reset() { return NS_OK; }
+
+void HTMLFieldSetElement::InsertChildBefore(nsIContent* aChild,
+ nsIContent* aBeforeThis,
+ bool aNotify, ErrorResult& aRv) {
+ bool firstLegendHasChanged = false;
+
+ if (aChild->IsHTMLElement(nsGkAtoms::legend)) {
+ if (!mFirstLegend) {
+ mFirstLegend = aChild;
+ // We do not want to notify the first time mFirstElement is set.
+ } else {
+ // If mFirstLegend is before aIndex, we do not change it.
+ // Otherwise, mFirstLegend is now aChild.
+ const Maybe<uint32_t> indexOfRef =
+ aBeforeThis ? ComputeIndexOf(aBeforeThis) : Some(GetChildCount());
+ const Maybe<uint32_t> indexOfFirstLegend = ComputeIndexOf(mFirstLegend);
+ if ((indexOfRef.isSome() && indexOfFirstLegend.isSome() &&
+ *indexOfRef <= *indexOfFirstLegend) ||
+ // XXX Keep the odd traditional behavior for now.
+ indexOfRef.isNothing()) {
+ mFirstLegend = aChild;
+ firstLegendHasChanged = true;
+ }
+ }
+ }
+
+ nsGenericHTMLFormControlElement::InsertChildBefore(aChild, aBeforeThis,
+ aNotify, aRv);
+ if (aRv.Failed()) {
+ return;
+ }
+
+ if (firstLegendHasChanged) {
+ NotifyElementsForFirstLegendChange(aNotify);
+ }
+}
+
+void HTMLFieldSetElement::RemoveChildNode(nsIContent* aKid, bool aNotify) {
+ bool firstLegendHasChanged = false;
+
+ if (mFirstLegend && aKid == mFirstLegend) {
+ // If we are removing the first legend we have to found another one.
+ nsIContent* child = mFirstLegend->GetNextSibling();
+ mFirstLegend = nullptr;
+ firstLegendHasChanged = true;
+
+ for (; child; child = child->GetNextSibling()) {
+ if (child->IsHTMLElement(nsGkAtoms::legend)) {
+ mFirstLegend = child;
+ break;
+ }
+ }
+ }
+
+ nsGenericHTMLFormControlElement::RemoveChildNode(aKid, aNotify);
+
+ if (firstLegendHasChanged) {
+ NotifyElementsForFirstLegendChange(aNotify);
+ }
+}
+
+void HTMLFieldSetElement::AddElement(nsGenericHTMLFormElement* aElement) {
+ mDependentElements.AppendElement(aElement);
+
+ // If the element that we are adding aElement is a fieldset, then all the
+ // invalid elements in aElement are also invalid elements of this.
+ HTMLFieldSetElement* fieldSet = FromNode(aElement);
+ if (fieldSet) {
+ for (int32_t i = 0; i < fieldSet->mInvalidElementsCount; i++) {
+ UpdateValidity(false);
+ }
+ return;
+ }
+
+ // If the element is a form-associated custom element, adding element might be
+ // caused by FACE upgrade which won't trigger mutation observer, so mark
+ // mElements dirty manually here.
+ CustomElementData* data = aElement->GetCustomElementData();
+ if (data && data->IsFormAssociated() && mElements) {
+ mElements->SetDirty();
+ }
+
+ // We need to update the validity of the fieldset.
+ nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aElement);
+ if (cvElmt && cvElmt->IsCandidateForConstraintValidation() &&
+ !cvElmt->IsValid()) {
+ UpdateValidity(false);
+ }
+
+#if DEBUG
+ int32_t debugInvalidElementsCount = 0;
+ for (uint32_t i = 0; i < mDependentElements.Length(); i++) {
+ HTMLFieldSetElement* fieldSet = FromNode(mDependentElements[i]);
+ if (fieldSet) {
+ debugInvalidElementsCount += fieldSet->mInvalidElementsCount;
+ continue;
+ }
+ nsCOMPtr<nsIConstraintValidation> cvElmt =
+ do_QueryObject(mDependentElements[i]);
+ if (cvElmt && cvElmt->IsCandidateForConstraintValidation() &&
+ !(cvElmt->IsValid())) {
+ debugInvalidElementsCount += 1;
+ }
+ }
+ MOZ_ASSERT(debugInvalidElementsCount == mInvalidElementsCount);
+#endif
+}
+
+void HTMLFieldSetElement::RemoveElement(nsGenericHTMLFormElement* aElement) {
+ mDependentElements.RemoveElement(aElement);
+
+ // If the element that we are removing aElement is a fieldset, then all the
+ // invalid elements in aElement are also removed from this.
+ HTMLFieldSetElement* fieldSet = FromNode(aElement);
+ if (fieldSet) {
+ for (int32_t i = 0; i < fieldSet->mInvalidElementsCount; i++) {
+ UpdateValidity(true);
+ }
+ return;
+ }
+
+ // We need to update the validity of the fieldset.
+ nsCOMPtr<nsIConstraintValidation> cvElmt = do_QueryObject(aElement);
+ if (cvElmt && cvElmt->IsCandidateForConstraintValidation() &&
+ !cvElmt->IsValid()) {
+ UpdateValidity(true);
+ }
+
+#if DEBUG
+ int32_t debugInvalidElementsCount = 0;
+ for (uint32_t i = 0; i < mDependentElements.Length(); i++) {
+ HTMLFieldSetElement* fieldSet = FromNode(mDependentElements[i]);
+ if (fieldSet) {
+ debugInvalidElementsCount += fieldSet->mInvalidElementsCount;
+ continue;
+ }
+ nsCOMPtr<nsIConstraintValidation> cvElmt =
+ do_QueryObject(mDependentElements[i]);
+ if (cvElmt && cvElmt->IsCandidateForConstraintValidation() &&
+ !(cvElmt->IsValid())) {
+ debugInvalidElementsCount += 1;
+ }
+ }
+ MOZ_ASSERT(debugInvalidElementsCount == mInvalidElementsCount);
+#endif
+}
+
+void HTMLFieldSetElement::UpdateDisabledState(bool aNotify) {
+ nsGenericHTMLFormControlElement::UpdateDisabledState(aNotify);
+
+ for (nsGenericHTMLFormElement* element : mDependentElements) {
+ element->FieldSetDisabledChanged(aNotify);
+ }
+}
+
+void HTMLFieldSetElement::NotifyElementsForFirstLegendChange(bool aNotify) {
+ /**
+ * NOTE: this could be optimized if only call when the fieldset is currently
+ * disabled.
+ * This should also make sure that mElements is set when we happen to be here.
+ * However, this method shouldn't be called very often in normal use cases.
+ */
+ if (!mElements) {
+ mElements =
+ new nsContentList(this, MatchListedElements, nullptr, nullptr, true);
+ }
+
+ uint32_t length = mElements->Length(true);
+ for (uint32_t i = 0; i < length; ++i) {
+ static_cast<nsGenericHTMLFormElement*>(mElements->Item(i))
+ ->FieldSetFirstLegendChanged(aNotify);
+ }
+}
+
+void HTMLFieldSetElement::UpdateValidity(bool aElementValidity) {
+ if (aElementValidity) {
+ --mInvalidElementsCount;
+ } else {
+ ++mInvalidElementsCount;
+ }
+
+ MOZ_ASSERT(mInvalidElementsCount >= 0);
+
+ // The fieldset validity has just changed if:
+ // - there are no more invalid elements ;
+ // - or there is one invalid elmement and an element just became invalid.
+ if (!mInvalidElementsCount ||
+ (mInvalidElementsCount == 1 && !aElementValidity)) {
+ AutoStateChangeNotifier notifier(*this, true);
+ RemoveStatesSilently(ElementState::VALID | ElementState::INVALID);
+ AddStatesSilently(mInvalidElementsCount ? ElementState::INVALID
+ : ElementState::VALID);
+ }
+
+ // We should propagate the change to the fieldset parent chain.
+ if (mFieldSet) {
+ mFieldSet->UpdateValidity(aElementValidity);
+ }
+}
+
+JSObject* HTMLFieldSetElement::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return HTMLFieldSetElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace mozilla::dom