Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 460 insertions, 0 deletions

diff --git a/dom/html/ElementInternals.cpp b/dom/html/ElementInternals.cpp
new file mode 100644
index 0000000000..62101f2922
--- /dev/null
+++ b/dom/html/ElementInternals.cpp
@@ -0,0 +1,460 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/dom/ElementInternals.h"
+
+#include "mozAutoDocUpdate.h"
+#include "mozilla/dom/CustomElementRegistry.h"
+#include "mozilla/dom/CustomEvent.h"
+#include "mozilla/dom/ElementInternalsBinding.h"
+#include "mozilla/dom/FormData.h"
+#include "mozilla/dom/HTMLElement.h"
+#include "mozilla/dom/HTMLFieldSetElement.h"
+#include "mozilla/dom/MutationEventBinding.h"
+#include "mozilla/dom/MutationObservers.h"
+#include "mozilla/dom/ShadowRoot.h"
+#include "mozilla/dom/ValidityState.h"
+#include "nsContentUtils.h"
+#include "nsDebug.h"
+#include "nsGenericHTMLElement.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ElementInternals)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ElementInternals)
+  tmp->Unlink();
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mTarget, mSubmissionValue, mState, mValidity,
+                                  mValidationAnchor);
+  NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ElementInternals)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTarget, mSubmissionValue, mState,
+                                    mValidity, mValidationAnchor);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(ElementInternals)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(ElementInternals)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ElementInternals)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsIFormControl)
+  NS_INTERFACE_MAP_ENTRY(nsIConstraintValidation)
+NS_INTERFACE_MAP_END
+
+ElementInternals::ElementInternals(HTMLElement* aTarget)
+    : nsIFormControl(FormControlType::FormAssociatedCustomElement),
+      mTarget(aTarget),
+      mForm(nullptr),
+      mFieldSet(nullptr) {}
+
+nsISupports* ElementInternals::GetParentObject() { return ToSupports(mTarget); }
+
+JSObject* ElementInternals::WrapObject(JSContext* aCx,
+                                       JS::Handle<JSObject*> aGivenProto) {
+  return ElementInternals_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-shadowroot
+ShadowRoot* ElementInternals::GetShadowRoot() const {
+  MOZ_ASSERT(mTarget);
+
+  ShadowRoot* shadowRoot = mTarget->GetShadowRoot();
+  if (shadowRoot && !shadowRoot->IsAvailableToElementInternals()) {
+    return nullptr;
+  }
+
+  return shadowRoot;
+}
+
+// https://html.spec.whatwg.org/commit-snapshots/912a3fe1f29649ccf8229de56f604b3c07ffd242/#dom-elementinternals-setformvalue
+void ElementInternals::SetFormValue(
+    const Nullable<FileOrUSVStringOrFormData>& aValue,
+    const Optional<Nullable<FileOrUSVStringOrFormData>>& aState,
+    ErrorResult& aRv) {
+  MOZ_ASSERT(mTarget);
+
+  /**
+   * 1. Let element be this's target element.
+   * 2. If element is not a form-associated custom element, then throw a
+   *    "NotSupportedError" DOMException.
+   */
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return;
+  }
+
+  /**
+   * 3. Set target element's submission value to value if value is not a
+   *    FormData object, or to a clone of the entry list associated with value
+   *    otherwise.
+   */
+  mSubmissionValue.SetNull();
+  if (!aValue.IsNull()) {
+    const FileOrUSVStringOrFormData& value = aValue.Value();
+    OwningFileOrUSVStringOrFormData& owningValue = mSubmissionValue.SetValue();
+    if (value.IsFormData()) {
+      owningValue.SetAsFormData() = value.GetAsFormData().Clone();
+    } else if (value.IsFile()) {
+      owningValue.SetAsFile() = &value.GetAsFile();
+    } else {
+      owningValue.SetAsUSVString() = value.GetAsUSVString();
+    }
+  }
+
+  /**
+   * 4. If the state argument of the function is omitted, set element's state to
+   *    its submission value.
+   */
+  if (!aState.WasPassed()) {
+    mState = mSubmissionValue;
+    return;
+  }
+
+  /**
+   * 5. Otherwise, if state is a FormData object, set element's state to clone
+   *    of the entry list associated with state.
+   * 6. Otherwise, set element's state to state.
+   */
+  mState.SetNull();
+  if (!aState.Value().IsNull()) {
+    const FileOrUSVStringOrFormData& state = aState.Value().Value();
+    OwningFileOrUSVStringOrFormData& owningState = mState.SetValue();
+    if (state.IsFormData()) {
+      owningState.SetAsFormData() = state.GetAsFormData().Clone();
+    } else if (state.IsFile()) {
+      owningState.SetAsFile() = &state.GetAsFile();
+    } else {
+      owningState.SetAsUSVString() = state.GetAsUSVString();
+    }
+  }
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-form
+HTMLFormElement* ElementInternals::GetForm(ErrorResult& aRv) const {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return nullptr;
+  }
+  return GetForm();
+}
+
+// https://html.spec.whatwg.org/commit-snapshots/3ad5159be8f27e110a70cefadcb50fc45ec21b05/#dom-elementinternals-setvalidity
+void ElementInternals::SetValidity(
+    const ValidityStateFlags& aFlags, const Optional<nsAString>& aMessage,
+    const Optional<NonNull<nsGenericHTMLElement>>& aAnchor, ErrorResult& aRv) {
+  MOZ_ASSERT(mTarget);
+
+  /**
+   * 1. Let element be this's target element.
+   * 2. If element is not a form-associated custom element, then throw a
+   *    "NotSupportedError" DOMException.
+   */
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return;
+  }
+
+  /**
+   * 3. If flags contains one or more true values and message is not given or is
+   *    the empty string, then throw a TypeError.
+   */
+  if ((aFlags.mBadInput || aFlags.mCustomError || aFlags.mPatternMismatch ||
+       aFlags.mRangeOverflow || aFlags.mRangeUnderflow ||
+       aFlags.mStepMismatch || aFlags.mTooLong || aFlags.mTooShort ||
+       aFlags.mTypeMismatch || aFlags.mValueMissing) &&
+      (!aMessage.WasPassed() || aMessage.Value().IsEmpty())) {
+    aRv.ThrowTypeError("Need to provide validation message");
+    return;
+  }
+
+  /**
+   * 4. For each entry flag → value of flags, set element's validity flag with
+   *    the name flag to value.
+   */
+  SetValidityState(VALIDITY_STATE_VALUE_MISSING, aFlags.mValueMissing);
+  SetValidityState(VALIDITY_STATE_TYPE_MISMATCH, aFlags.mTypeMismatch);
+  SetValidityState(VALIDITY_STATE_PATTERN_MISMATCH, aFlags.mPatternMismatch);
+  SetValidityState(VALIDITY_STATE_TOO_LONG, aFlags.mTooLong);
+  SetValidityState(VALIDITY_STATE_TOO_SHORT, aFlags.mTooShort);
+  SetValidityState(VALIDITY_STATE_RANGE_UNDERFLOW, aFlags.mRangeUnderflow);
+  SetValidityState(VALIDITY_STATE_RANGE_OVERFLOW, aFlags.mRangeOverflow);
+  SetValidityState(VALIDITY_STATE_STEP_MISMATCH, aFlags.mStepMismatch);
+  SetValidityState(VALIDITY_STATE_BAD_INPUT, aFlags.mBadInput);
+  SetValidityState(VALIDITY_STATE_CUSTOM_ERROR, aFlags.mCustomError);
+  mTarget->UpdateState(true);
+
+  /**
+   * 5. Set element's validation message to the empty string if message is not
+   *    given or all of element's validity flags are false, or to message
+   *    otherwise.
+   * 6. If element's customError validity flag is true, then set element's
+   *    custom validity error message to element's validation message.
+   *    Otherwise, set element's custom validity error message to the empty
+   *    string.
+   */
+  mValidationMessage =
+      (!aMessage.WasPassed() || IsValid()) ? EmptyString() : aMessage.Value();
+
+  /**
+   * 7. Set element's validation anchor to null if anchor is not given.
+   *    Otherwise, if anchor is not a shadow-including descendant of element,
+   *    then throw a "NotFoundError" DOMException. Otherwise, set element's
+   *    validation anchor to anchor.
+   */
+  nsGenericHTMLElement* anchor =
+      aAnchor.WasPassed() ? &aAnchor.Value() : nullptr;
+  // TODO: maybe create something like IsShadowIncludingDescendantOf if there
+  //       are other places also need such check.
+  if (anchor && (anchor == mTarget ||
+                 !anchor->IsShadowIncludingInclusiveDescendantOf(mTarget))) {
+    aRv.ThrowNotFoundError(
+        "Validation anchor is not a shadow-including descendant of target"
+        "element");
+    return;
+  }
+  mValidationAnchor = anchor;
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-willvalidate
+bool ElementInternals::GetWillValidate(ErrorResult& aRv) const {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return false;
+  }
+  return WillValidate();
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-validity
+ValidityState* ElementInternals::GetValidity(ErrorResult& aRv) {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return nullptr;
+  }
+  return Validity();
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-validationmessage
+void ElementInternals::GetValidationMessage(nsAString& aValidationMessage,
+                                            ErrorResult& aRv) const {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return;
+  }
+  aValidationMessage = mValidationMessage;
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-checkvalidity
+bool ElementInternals::CheckValidity(ErrorResult& aRv) {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return false;
+  }
+  return nsIConstraintValidation::CheckValidity(*mTarget);
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-reportvalidity
+bool ElementInternals::ReportValidity(ErrorResult& aRv) {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return false;
+  }
+
+  bool defaultAction = true;
+  if (nsIConstraintValidation::CheckValidity(*mTarget, &defaultAction)) {
+    return true;
+  }
+
+  if (!defaultAction) {
+    return false;
+  }
+
+  AutoTArray<RefPtr<Element>, 1> invalidElements;
+  invalidElements.AppendElement(mTarget);
+
+  AutoJSAPI jsapi;
+  if (!jsapi.Init(mTarget->GetOwnerGlobal())) {
+    return false;
+  }
+  JS::Rooted<JS::Value> detail(jsapi.cx());
+  if (!ToJSValue(jsapi.cx(), invalidElements, &detail)) {
+    return false;
+  }
+
+  mTarget->UpdateState(true);
+
+  RefPtr<CustomEvent> event =
+      NS_NewDOMCustomEvent(mTarget->OwnerDoc(), nullptr, nullptr);
+  event->InitCustomEvent(jsapi.cx(), u"MozInvalidForm"_ns,
+                         /* CanBubble */ true,
+                         /* Cancelable */ true, detail);
+  event->SetTrusted(true);
+  event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true;
+  mTarget->DispatchEvent(*event);
+
+  return false;
+}
+
+// https://html.spec.whatwg.org/#dom-elementinternals-labels
+already_AddRefed<nsINodeList> ElementInternals::GetLabels(
+    ErrorResult& aRv) const {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return nullptr;
+  }
+  return mTarget->Labels();
+}
+
+nsGenericHTMLElement* ElementInternals::GetValidationAnchor(
+    ErrorResult& aRv) const {
+  MOZ_ASSERT(mTarget);
+
+  if (!mTarget->IsFormAssociatedElement()) {
+    aRv.ThrowNotSupportedError(
+        "Target element is not a form-associated custom element");
+    return nullptr;
+  }
+  return mValidationAnchor;
+}
+
+void ElementInternals::SetForm(HTMLFormElement* aForm) { mForm = aForm; }
+
+void ElementInternals::ClearForm(bool aRemoveFromForm, bool aUnbindOrDelete) {
+  if (mTarget) {
+    mTarget->ClearForm(aRemoveFromForm, aUnbindOrDelete);
+  }
+}
+
+NS_IMETHODIMP ElementInternals::Reset() {
+  if (mTarget) {
+    MOZ_ASSERT(mTarget->IsFormAssociatedElement());
+    nsContentUtils::EnqueueLifecycleCallback(ElementCallbackType::eFormReset,
+                                             mTarget, {});
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP ElementInternals::SubmitNamesValues(FormData* aFormData) {
+  if (!mTarget) {
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  MOZ_ASSERT(mTarget->IsFormAssociatedElement());
+
+  // https://html.spec.whatwg.org/#face-entry-construction
+  if (!mSubmissionValue.IsNull()) {
+    if (mSubmissionValue.Value().IsFormData()) {
+      aFormData->Append(mSubmissionValue.Value().GetAsFormData());
+      return NS_OK;
+    }
+
+    // Get the name
+    nsAutoString name;
+    if (!mTarget->GetAttr(nsGkAtoms::name, name) || name.IsEmpty()) {
+      return NS_OK;
+    }
+
+    if (mSubmissionValue.Value().IsUSVString()) {
+      return aFormData->AddNameValuePair(
+          name, mSubmissionValue.Value().GetAsUSVString());
+    }
+
+    return aFormData->AddNameBlobPair(name,
+                                      mSubmissionValue.Value().GetAsFile());
+  }
+  return NS_OK;
+}
+
+void ElementInternals::UpdateFormOwner() {
+  if (mTarget) {
+    mTarget->UpdateFormOwner();
+  }
+}
+
+void ElementInternals::UpdateBarredFromConstraintValidation() {
+  if (mTarget) {
+    MOZ_ASSERT(mTarget->IsFormAssociatedElement());
+    SetBarredFromConstraintValidation(
+        mTarget->HasAttr(nsGkAtoms::readonly) ||
+        mTarget->HasFlag(ELEMENT_IS_DATALIST_OR_HAS_DATALIST_ANCESTOR) ||
+        mTarget->IsDisabled());
+  }
+}
+
+void ElementInternals::Unlink() {
+  if (mForm) {
+    // Don't notify, since we're being destroyed in any case.
+    ClearForm(true, true);
+    MOZ_DIAGNOSTIC_ASSERT(!mForm);
+  }
+  if (mFieldSet) {
+    mFieldSet->RemoveElement(mTarget);
+    mFieldSet = nullptr;
+  }
+}
+
+void ElementInternals::GetAttr(const nsAtom* aName, nsAString& aResult) const {
+  MOZ_ASSERT(aResult.IsEmpty(), "Should have empty string coming in");
+
+  const nsAttrValue* val = mAttrs.GetAttr(aName);
+  if (val) {
+    val->ToString(aResult);
+    return;
+  }
+  SetDOMStringToNull(aResult);
+}
+
+nsresult ElementInternals::SetAttr(nsAtom* aName, const nsAString& aValue) {
+  Document* document = mTarget->GetComposedDoc();
+  mozAutoDocUpdate updateBatch(document, true);
+
+  uint8_t modType = mAttrs.HasAttr(kNameSpaceID_None, aName)
+                        ? MutationEvent_Binding::MODIFICATION
+                        : MutationEvent_Binding::ADDITION;
+
+  MutationObservers::NotifyARIAAttributeDefaultWillChange(mTarget, aName,
+                                                          modType);
+
+  bool attrHadValue;
+  nsAttrValue attrValue(aValue);
+  nsresult rs = mAttrs.SetAndSwapAttr(aName, attrValue, &attrHadValue);
+  nsMutationGuard::DidMutate();
+
+  MutationObservers::NotifyARIAAttributeDefaultChanged(mTarget, aName, modType);
+
+  mTarget->UpdateState(true);
+
+  return rs;
+}
+
+DocGroup* ElementInternals::GetDocGroup() {
+  return mTarget->OwnerDoc()->GetDocGroup();
+}
+
+}  // namespace mozilla::dom