Bug 1418002 - Remove HTMLContentElement

Tag #1375

3 files changed, 0 insertions, 507 deletions

diff --git a/dom/html/HTMLContentElement.cpp b/dom/html/HTMLContentElement.cpp
deleted file mode 100644
index 15d79c761..000000000
--- a/dom/html/HTMLContentElement.cpp
+++ /dev/null
@@ -1,379 +0,0 @@
-/* -*- 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/dom/HTMLContentElement.h"
-#include "mozilla/dom/HTMLContentElementBinding.h"
-#include "mozilla/dom/HTMLUnknownElement.h"
-#include "mozilla/dom/NodeListBinding.h"
-#include "mozilla/dom/ShadowRoot.h"
-#include "mozilla/css/StyleRule.h"
-#include "nsGkAtoms.h"
-#include "nsStyleConsts.h"
-#include "nsIAtom.h"
-#include "nsCSSRuleProcessor.h"
-#include "nsRuleData.h"
-#include "nsRuleProcessorData.h"
-#include "nsRuleWalker.h"
-#include "nsCSSParser.h"
-#include "nsDocument.h"
-
-// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Content) to add check for web components
-// being enabled.
-nsGenericHTMLElement*
-NS_NewHTMLContentElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
-                         mozilla::dom::FromParser aFromParser)
-{
-  // When this check is removed, remove the nsDocument.h and
-  // HTMLUnknownElement.h includes.  Also remove nsINode::IsHTMLContentElement.
-  //
-  // We have to jump through some hoops to be able to produce both NodeInfo* and
-  // already_AddRefed<NodeInfo>& for our callees.
-  RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
-  if (!nsDocument::IsWebComponentsEnabled(nodeInfo)) {
-    already_AddRefed<mozilla::dom::NodeInfo> nodeInfoArg(nodeInfo.forget());
-    return new mozilla::dom::HTMLUnknownElement(nodeInfoArg);
-  }
-
-  already_AddRefed<mozilla::dom::NodeInfo> nodeInfoArg(nodeInfo.forget());
-  return new mozilla::dom::HTMLContentElement(nodeInfoArg);
-}
-
-using namespace mozilla::dom;
-
-HTMLContentElement::HTMLContentElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
-  : nsGenericHTMLElement(aNodeInfo), mValidSelector(true), mIsInsertionPoint(false)
-{
-}
-
-HTMLContentElement::~HTMLContentElement()
-{
-}
-
-NS_IMPL_CYCLE_COLLECTION_INHERITED(HTMLContentElement,
-                                   nsGenericHTMLElement,
-                                   mMatchedNodes)
-
-NS_IMPL_ADDREF_INHERITED(HTMLContentElement, Element)
-NS_IMPL_RELEASE_INHERITED(HTMLContentElement, Element)
-
-NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(HTMLContentElement)
-NS_INTERFACE_MAP_END_INHERITING(nsGenericHTMLElement)
-
-NS_IMPL_ELEMENT_CLONE(HTMLContentElement)
-
-JSObject*
-HTMLContentElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
-{
-  return HTMLContentElementBinding::Wrap(aCx, this, aGivenProto);
-}
-
-nsresult
-HTMLContentElement::BindToTree(nsIDocument* aDocument,
-                               nsIContent* aParent,
-                               nsIContent* aBindingParent,
-                               bool aCompileEventHandlers)
-{
-  RefPtr<ShadowRoot> oldContainingShadow = GetContainingShadow();
-
-  nsresult rv = nsGenericHTMLElement::BindToTree(aDocument, aParent,
-                                                 aBindingParent,
-                                                 aCompileEventHandlers);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  ShadowRoot* containingShadow = GetContainingShadow();
-  if (containingShadow && !oldContainingShadow) {
-    nsINode* parentNode = nsINode::GetParentNode();
-    while (parentNode && parentNode != containingShadow) {
-      if (parentNode->IsHTMLContentElement()) {
-        // Content element in fallback content is not an insertion point.
-        return NS_OK;
-      }
-      parentNode = parentNode->GetParentNode();
-    }
-
-    // If the content element is being inserted into a ShadowRoot,
-    // add this element to the list of insertion points.
-    mIsInsertionPoint = true;
-    containingShadow->AddInsertionPoint(this);
-    containingShadow->SetInsertionPointChanged();
-  }
-
-  return NS_OK;
-}
-
-void
-HTMLContentElement::UnbindFromTree(bool aDeep, bool aNullParent)
-{
-  RefPtr<ShadowRoot> oldContainingShadow = GetContainingShadow();
-
-  nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
-
-  if (oldContainingShadow && !GetContainingShadow() && mIsInsertionPoint) {
-    oldContainingShadow->RemoveInsertionPoint(this);
-
-    // Remove all the matched nodes now that the
-    // insertion point is no longer an insertion point.
-    ClearMatchedNodes();
-    oldContainingShadow->SetInsertionPointChanged();
-
-    mIsInsertionPoint = false;
-  }
-}
-
-void
-HTMLContentElement::AppendMatchedNode(nsIContent* aContent)
-{
-  mMatchedNodes.AppendElement(aContent);
-  nsTArray<nsIContent*>& destInsertionPoint = aContent->DestInsertionPoints();
-  destInsertionPoint.AppendElement(this);
-
-  if (mMatchedNodes.Length() == 1) {
-    // Fallback content gets dropped so we need to updated fallback
-    // content distribution.
-    UpdateFallbackDistribution();
-  }
-}
-
-void
-HTMLContentElement::UpdateFallbackDistribution()
-{
-  for (nsIContent* child = nsINode::GetFirstChild();
-       child;
-       child = child->GetNextSibling()) {
-    nsTArray<nsIContent*>& destInsertionPoint = child->DestInsertionPoints();
-    destInsertionPoint.Clear();
-    if (mMatchedNodes.IsEmpty()) {
-      destInsertionPoint.AppendElement(this);
-    }
-  }
-}
-
-void
-HTMLContentElement::RemoveMatchedNode(nsIContent* aContent)
-{
-  mMatchedNodes.RemoveElement(aContent);
-  ShadowRoot::RemoveDestInsertionPoint(this, aContent->DestInsertionPoints());
-
-  if (mMatchedNodes.IsEmpty()) {
-    // Fallback content is activated so we need to update fallback
-    // content distribution.
-    UpdateFallbackDistribution();
-  }
-}
-
-void
-HTMLContentElement::InsertMatchedNode(uint32_t aIndex, nsIContent* aContent)
-{
-  mMatchedNodes.InsertElementAt(aIndex, aContent);
-  nsTArray<nsIContent*>& destInsertionPoint = aContent->DestInsertionPoints();
-  destInsertionPoint.AppendElement(this);
-
-  if (mMatchedNodes.Length() == 1) {
-    // Fallback content gets dropped so we need to updated fallback
-    // content distribution.
-    UpdateFallbackDistribution();
-  }
-}
-
-void
-HTMLContentElement::ClearMatchedNodes()
-{
-  for (uint32_t i = 0; i < mMatchedNodes.Length(); i++) {
-    ShadowRoot::RemoveDestInsertionPoint(this, mMatchedNodes[i]->DestInsertionPoints());
-  }
-
-  mMatchedNodes.Clear();
-
-  UpdateFallbackDistribution();
-}
-
-static bool
-IsValidContentSelectors(nsCSSSelector* aSelector)
-{
-  nsCSSSelector* currentSelector = aSelector;
-  while (currentSelector) {
-    // Blacklist invalid selector fragments.
-    if (currentSelector->IsPseudoElement() ||
-        currentSelector->mPseudoClassList ||
-        currentSelector->mNegations ||
-        currentSelector->mOperator) {
-      return false;
-    }
-
-    currentSelector = currentSelector->mNext;
-  }
-
-  return true;
-}
-
-nsresult
-HTMLContentElement::AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
-                                 const nsAttrValue* aValue,
-                                 const nsAttrValue* aOldValue, bool aNotify)
-{
-  if (aNamespaceID == kNameSpaceID_None && aName == nsGkAtoms::select) {
-    if (aValue) {
-      // Select attribute was updated, the insertion point may match different
-      // elements.
-      nsIDocument* doc = OwnerDoc();
-      nsCSSParser parser(doc->CSSLoader());
-
-      mValidSelector = true;
-      mSelectorList = nullptr;
-
-      nsAutoString valueStr;
-      aValue->ToString(valueStr);
-      nsresult rv = parser.ParseSelectorString(valueStr,
-                                               doc->GetDocumentURI(),
-                                               // Bug 11240
-                                               0, // XXX get the line number!
-                                               getter_Transfers(mSelectorList));
-
-      // We don't want to return an exception if parsing failed because
-      // the spec does not define it as an exception case.
-      if (NS_SUCCEEDED(rv)) {
-        // Ensure that all the selectors are valid
-        nsCSSSelectorList* selectors = mSelectorList;
-        while (selectors) {
-          if (!IsValidContentSelectors(selectors->mSelectors)) {
-            // If we have an invalid selector, we can not match anything.
-            mValidSelector = false;
-            mSelectorList = nullptr;
-            break;
-          }
-          selectors = selectors->mNext;
-        }
-      }
-
-      if (ShadowRoot* containingShadow = GetContainingShadow()) {
-        containingShadow->DistributeAllNodes();
-      }
-    } else {
-      // The select attribute was removed. This insertion point becomes
-      // a universal selector.
-      mValidSelector = true;
-      mSelectorList = nullptr;
-
-      if (ShadowRoot* containingShadow = GetContainingShadow()) {
-        containingShadow->DistributeAllNodes();
-      }
-    }
-  }
-
-  return nsGenericHTMLElement::AfterSetAttr(aNamespaceID, aName, aValue,
-                                            aOldValue, aNotify);
-}
-
-bool
-HTMLContentElement::Match(nsIContent* aContent)
-{
-  if (!mValidSelector) {
-    return false;
-  }
-
-  if (mSelectorList) {
-    nsIDocument* doc = OwnerDoc();
-    ShadowRoot* containingShadow = GetContainingShadow();
-    nsIContent* host = containingShadow->GetHost();
-
-    TreeMatchContext matchingContext(false, nsRuleWalker::eRelevantLinkUnvisited,
-                                     doc, TreeMatchContext::eNeverMatchVisited);
-    doc->FlushPendingLinkUpdates();
-    matchingContext.SetHasSpecifiedScope();
-    matchingContext.AddScopeElement(host->AsElement());
-
-    if (!aContent->IsElement()) {
-      return false;
-    }
-
-    return nsCSSRuleProcessor::SelectorListMatches(aContent->AsElement(),
-                                                   matchingContext,
-                                                   mSelectorList);
-  }
-
-  return true;
-}
-
-already_AddRefed<DistributedContentList>
-HTMLContentElement::GetDistributedNodes()
-{
-  RefPtr<DistributedContentList> list = new DistributedContentList(this);
-  return list.forget();
-}
-
-NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DistributedContentList, mParent,
-                                      mDistributedNodes)
-
-NS_INTERFACE_TABLE_HEAD(DistributedContentList)
-  NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
-  NS_INTERFACE_TABLE(DistributedContentList, nsINodeList, nsIDOMNodeList)
-  NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DistributedContentList)
-NS_INTERFACE_MAP_END
-
-NS_IMPL_CYCLE_COLLECTING_ADDREF(DistributedContentList)
-NS_IMPL_CYCLE_COLLECTING_RELEASE(DistributedContentList)
-
-DistributedContentList::DistributedContentList(HTMLContentElement* aHostElement)
-  : mParent(aHostElement)
-{
-  MOZ_COUNT_CTOR(DistributedContentList);
-
-  if (aHostElement->IsInsertionPoint()) {
-    if (aHostElement->MatchedNodes().IsEmpty()) {
-      // Fallback content.
-      nsINode* contentNode = aHostElement;
-      for (nsIContent* content = contentNode->GetFirstChild();
-           content;
-           content = content->GetNextSibling()) {
-        mDistributedNodes.AppendElement(content);
-      }
-    } else {
-      mDistributedNodes.AppendElements(aHostElement->MatchedNodes());
-    }
-  }
-}
-
-DistributedContentList::~DistributedContentList()
-{
-  MOZ_COUNT_DTOR(DistributedContentList);
-}
-
-nsIContent*
-DistributedContentList::Item(uint32_t aIndex)
-{
-  return mDistributedNodes.SafeElementAt(aIndex);
-}
-
-NS_IMETHODIMP
-DistributedContentList::Item(uint32_t aIndex, nsIDOMNode** aReturn)
-{
-  nsIContent* item = Item(aIndex);
-  if (!item) {
-    return NS_ERROR_FAILURE;
-  }
-
-  return CallQueryInterface(item, aReturn);
-}
-
-NS_IMETHODIMP
-DistributedContentList::GetLength(uint32_t* aLength)
-{
-  *aLength = mDistributedNodes.Length();
-  return NS_OK;
-}
-
-int32_t
-DistributedContentList::IndexOf(nsIContent* aContent)
-{
-  return mDistributedNodes.IndexOf(aContent);
-}
-
-JSObject*
-DistributedContentList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
-{
-  return NodeListBinding::Wrap(aCx, this, aGivenProto);
-}
-
diff --git a/dom/html/HTMLContentElement.h b/dom/html/HTMLContentElement.h
deleted file mode 100644
index 630e26d17..000000000
--- a/dom/html/HTMLContentElement.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/* -*- 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/. */
-
-#ifndef mozilla_dom_HTMLContentElement_h__
-#define mozilla_dom_HTMLContentElement_h__
-
-#include "nsAutoPtr.h"
-#include "nsINodeList.h"
-#include "nsGenericHTMLElement.h"
-
-struct nsCSSSelectorList;
-
-namespace mozilla {
-namespace dom {
-
-class DistributedContentList;
-
-class HTMLContentElement final : public nsGenericHTMLElement
-{
-public:
-  explicit HTMLContentElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
-
-  // nsISupports
-  NS_DECL_ISUPPORTS_INHERITED
-
-  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLContentElement,
-                                           nsGenericHTMLElement)
-
-  NS_IMPL_FROMCONTENT_HELPER(HTMLContentElement, IsHTMLContentElement())
-
-  virtual bool IsHTMLContentElement() const override { return true; }
-
-  virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override;
-
-  virtual nsIDOMNode* AsDOMNode() override { return this; }
-
-  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
-                              nsIContent* aBindingParent,
-                              bool aCompileEventHandlers) override;
-
-  virtual void UnbindFromTree(bool aDeep = true,
-                              bool aNullParent = true) override;
-
-  /**
-   * Returns whether if the selector of this insertion point
-   * matches the provided content.
-   */
-  bool Match(nsIContent* aContent);
-  bool IsInsertionPoint() const { return mIsInsertionPoint; }
-  nsCOMArray<nsIContent>& MatchedNodes() { return mMatchedNodes; }
-  void AppendMatchedNode(nsIContent* aContent);
-  void RemoveMatchedNode(nsIContent* aContent);
-  void InsertMatchedNode(uint32_t aIndex, nsIContent* aContent);
-  void ClearMatchedNodes();
-
-  // WebIDL methods.
-  already_AddRefed<DistributedContentList> GetDistributedNodes();
-  void GetSelect(nsAString& aSelect)
-  {
-    Element::GetAttr(kNameSpaceID_None, nsGkAtoms::select, aSelect);
-  }
-  void SetSelect(const nsAString& aSelect)
-  {
-    Element::SetAttr(kNameSpaceID_None, nsGkAtoms::select, aSelect, true);
-  }
-
-protected:
-  virtual ~HTMLContentElement();
-
-  virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
-
-  /**
-   * Updates the destination insertion points of the fallback
-   * content of this insertion point. If there are nodes matched
-   * to this insertion point, then destination insertion points
-   * of fallback are cleared, otherwise, this insertion point
-   * is a destination insertion point.
-   */
-  void UpdateFallbackDistribution();
-
-  virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
-                                const nsAttrValue* aValue,
-                                const nsAttrValue* aOldValue,
-                                bool aNotify) override;
-
-  /**
-   * An array of nodes from the ShadowRoot host that match the
-   * content insertion selector.
-   */
-  nsCOMArray<nsIContent> mMatchedNodes;
-
-  nsAutoPtr<nsCSSSelectorList> mSelectorList;
-  bool mValidSelector;
-  bool mIsInsertionPoint;
-};
-
-class DistributedContentList : public nsINodeList
-{
-public:
-  explicit DistributedContentList(HTMLContentElement* aHostElement);
-
-  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
-  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DistributedContentList)
-
-  // nsIDOMNodeList
-  NS_DECL_NSIDOMNODELIST
-
-  // nsINodeList
-  virtual nsIContent* Item(uint32_t aIndex) override;
-  virtual int32_t IndexOf(nsIContent* aContent) override;
-  virtual nsINode* GetParentObject() override { return mParent; }
-  virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
-protected:
-  virtual ~DistributedContentList();
-  RefPtr<HTMLContentElement> mParent;
-  nsCOMArray<nsIContent> mDistributedNodes;
-};
-
-} // namespace dom
-} // namespace mozilla
-
-#endif // mozilla_dom_HTMLContentElement_h__
-
diff --git a/dom/html/moz.build b/dom/html/moz.build
index 79554df21..342b027a5 100644
--- a/dom/html/moz.build
+++ b/dom/html/moz.build
@@ -52,7 +52,6 @@ EXPORTS.mozilla.dom += [
     'HTMLBRElement.h',
     'HTMLButtonElement.h',
     'HTMLCanvasElement.h',
-    'HTMLContentElement.h',
     'HTMLDataElement.h',
     'HTMLDataListElement.h',
     'HTMLDetailsElement.h',
@@ -131,7 +130,6 @@ UNIFIED_SOURCES += [
     'HTMLBRElement.cpp',
     'HTMLButtonElement.cpp',
     'HTMLCanvasElement.cpp',
-    'HTMLContentElement.cpp',
     'HTMLDataElement.cpp',
     'HTMLDataListElement.cpp',
     'HTMLDetailsElement.cpp',