Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 221 insertions, 0 deletions

diff --git a/dom/base/Attr.cpp b/dom/base/Attr.cpp
new file mode 100644
index 0000000000..7ac76be544
--- /dev/null
+++ b/dom/base/Attr.cpp
@@ -0,0 +1,221 @@
+/* -*- 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/. */
+
+/*
+ * Implementation of DOM Core's Attr node.
+ */
+
+#include "mozilla/dom/Attr.h"
+#include "mozilla/dom/AttrBinding.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/EventDispatcher.h"
+#include "mozilla/InternalMutationEvent.h"
+#include "mozilla/StaticPrefs_dom.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsError.h"
+#include "nsUnicharUtils.h"
+#include "nsDOMString.h"
+#include "nsIContentInlines.h"
+#include "mozilla/dom/Document.h"
+#include "nsGkAtoms.h"
+#include "nsCOMArray.h"
+#include "nsNameSpaceManager.h"
+#include "nsTextNode.h"
+#include "mozAutoDocUpdate.h"
+#include "nsWrapperCacheInlines.h"
+#include "NodeUbiReporting.h"
+
+namespace mozilla::dom {
+
+//----------------------------------------------------------------------
+bool Attr::sInitialized;
+
+Attr::Attr(nsDOMAttributeMap* aAttrMap,
+           already_AddRefed<dom::NodeInfo>&& aNodeInfo, const nsAString& aValue)
+    : nsINode(std::move(aNodeInfo)), mAttrMap(aAttrMap), mValue(aValue) {
+  MOZ_ASSERT(mNodeInfo, "We must get a nodeinfo here!");
+  MOZ_ASSERT(mNodeInfo->NodeType() == ATTRIBUTE_NODE, "Wrong nodeType");
+
+  // We don't add a reference to our content. It will tell us
+  // to drop our reference when it goes away.
+}
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Attr)
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Attr)
+  if (!nsINode::Traverse(tmp, cb)) {
+    return NS_SUCCESS_INTERRUPTED_TRAVERSE;
+  }
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mAttrMap)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(Attr)
+  nsINode::Unlink(tmp);
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mAttrMap)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(Attr)
+  Element* ownerElement = tmp->GetElement();
+  if (tmp->HasKnownLiveWrapper()) {
+    if (ownerElement) {
+      // The attribute owns the element via attribute map so we can
+      // mark it when the attribute is certainly alive.
+      mozilla::dom::FragmentOrElement::MarkNodeChildren(ownerElement);
+    }
+    return true;
+  }
+  if (ownerElement &&
+      mozilla::dom::FragmentOrElement::CanSkip(ownerElement, true)) {
+    return true;
+  }
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(Attr)
+  return tmp->HasKnownLiveWrapperAndDoesNotNeedTracing(tmp);
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(Attr)
+  return tmp->HasKnownLiveWrapper();
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
+
+// QueryInterface implementation for Attr
+NS_INTERFACE_TABLE_HEAD(Attr)
+  NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
+  NS_INTERFACE_TABLE(Attr, nsINode, EventTarget)
+  NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(Attr)
+  NS_INTERFACE_MAP_ENTRY_TEAROFF(nsISupportsWeakReference,
+                                 new nsNodeSupportsWeakRefTearoff(this))
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(Attr)
+
+NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_LAST_RELEASE_AND_DESTROY(Attr,
+                                                               LastRelease(),
+                                                               Destroy())
+
+NS_IMPL_DOMARENA_DESTROY(Attr)
+
+void Attr::SetMap(nsDOMAttributeMap* aMap) {
+  if (mAttrMap && !aMap && sInitialized) {
+    // We're breaking a relationship with content and not getting a new one,
+    // need to locally cache value. GetValue() does that.
+    GetValue(mValue);
+  }
+
+  mAttrMap = aMap;
+}
+
+Element* Attr::GetElement() const {
+  if (!mAttrMap) {
+    return nullptr;
+  }
+  nsIContent* content = mAttrMap->GetContent();
+  return content ? content->AsElement() : nullptr;
+}
+
+nsresult Attr::SetOwnerDocument(Document* aDocument) {
+  NS_ASSERTION(aDocument, "Missing document");
+
+  Document* doc = OwnerDoc();
+  NS_ASSERTION(doc != aDocument, "bad call to Attr::SetOwnerDocument");
+  doc->RemoveAllPropertiesFor(this);
+
+  RefPtr<dom::NodeInfo> newNodeInfo = aDocument->NodeInfoManager()->GetNodeInfo(
+      mNodeInfo->NameAtom(), mNodeInfo->GetPrefixAtom(),
+      mNodeInfo->NamespaceID(), ATTRIBUTE_NODE);
+  NS_ASSERTION(newNodeInfo, "GetNodeInfo lies");
+  mNodeInfo.swap(newNodeInfo);
+
+  return NS_OK;
+}
+
+void Attr::GetName(nsAString& aName) { aName = NodeName(); }
+
+void Attr::GetValue(nsAString& aValue) {
+  Element* element = GetElement();
+  if (element) {
+    RefPtr<nsAtom> nameAtom = mNodeInfo->NameAtom();
+    element->GetAttr(mNodeInfo->NamespaceID(), nameAtom, aValue);
+  } else {
+    aValue = mValue;
+  }
+}
+
+void Attr::SetValue(const nsAString& aValue, nsIPrincipal* aTriggeringPrincipal,
+                    ErrorResult& aRv) {
+  Element* element = GetElement();
+  if (!element) {
+    mValue = aValue;
+    return;
+  }
+
+  RefPtr<nsAtom> nameAtom = mNodeInfo->NameAtom();
+  aRv = element->SetAttr(mNodeInfo->NamespaceID(), nameAtom,
+                         mNodeInfo->GetPrefixAtom(), aValue,
+                         aTriggeringPrincipal, true);
+}
+
+void Attr::SetValue(const nsAString& aValue, ErrorResult& aRv) {
+  SetValue(aValue, nullptr, aRv);
+}
+
+bool Attr::Specified() const { return true; }
+
+Element* Attr::GetOwnerElement() { return GetElement(); }
+
+void Attr::GetNodeValueInternal(nsAString& aNodeValue) { GetValue(aNodeValue); }
+
+void Attr::SetNodeValueInternal(const nsAString& aNodeValue,
+                                ErrorResult& aError) {
+  SetValue(aNodeValue, nullptr, aError);
+}
+
+nsresult Attr::Clone(dom::NodeInfo* aNodeInfo, nsINode** aResult) const {
+  nsAutoString value;
+  const_cast<Attr*>(this)->GetValue(value);
+  *aResult = new (aNodeInfo->NodeInfoManager())
+      Attr(nullptr, do_AddRef(aNodeInfo), value);
+
+  NS_ADDREF(*aResult);
+
+  return NS_OK;
+}
+
+nsIURI* Attr::GetBaseURI(bool aTryUseXHRDocBaseURI) const {
+  Element* parent = GetElement();
+
+  return parent ? parent->GetBaseURI(aTryUseXHRDocBaseURI)
+                : OwnerDoc()->GetBaseURI(aTryUseXHRDocBaseURI);
+}
+
+void Attr::GetTextContentInternal(nsAString& aTextContent,
+                                  OOMReporter& aError) {
+  GetValue(aTextContent);
+}
+
+void Attr::SetTextContentInternal(const nsAString& aTextContent,
+                                  nsIPrincipal* aSubjectPrincipal,
+                                  ErrorResult& aError) {
+  SetNodeValueInternal(aTextContent, aError);
+}
+
+void Attr::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
+  aVisitor.mCanHandle = true;
+}
+
+void Attr::Initialize() { sInitialized = true; }
+
+void Attr::Shutdown() { sInitialized = false; }
+
+JSObject* Attr::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
+  return Attr_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void Attr::ConstructUbiNode(void* storage) {
+  JS::ubi::Concrete<Attr>::construct(storage, this);
+}
+
+}  // namespace mozilla::dom