Add m-esr52 at 52.6.0

1 files changed, 519 insertions, 0 deletions

diff --git a/dom/svg/SVGUseElement.cpp b/dom/svg/SVGUseElement.cpp
new file mode 100644
index 000000000..4911e2cac
--- /dev/null
+++ b/dom/svg/SVGUseElement.cpp
@@ -0,0 +1,519 @@
+/* -*- 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/ArrayUtils.h"
+
+#include "mozilla/dom/SVGUseElement.h"
+#include "mozilla/dom/SVGUseElementBinding.h"
+#include "nsGkAtoms.h"
+#include "mozilla/dom/SVGSVGElement.h"
+#include "nsIDocument.h"
+#include "nsIPresShell.h"
+#include "mozilla/dom/Element.h"
+#include "nsContentUtils.h"
+#include "nsIURI.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Use)
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGUseElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return SVGUseElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+////////////////////////////////////////////////////////////////////////
+// implementation
+
+nsSVGElement::LengthInfo SVGUseElement::sLengthInfo[4] =
+{
+  { &nsGkAtoms::x, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
+  { &nsGkAtoms::y, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
+  { &nsGkAtoms::width, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
+  { &nsGkAtoms::height, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
+};
+
+nsSVGElement::StringInfo SVGUseElement::sStringInfo[2] =
+{
+  { &nsGkAtoms::href, kNameSpaceID_None, true },
+  { &nsGkAtoms::href, kNameSpaceID_XLink, true }
+};
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(SVGUseElement)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGUseElement,
+                                                SVGUseElementBase)
+  nsAutoScriptBlocker scriptBlocker;
+  NS_IMPL_CYCLE_COLLECTION_UNLINK(mOriginal)
+  tmp->DestroyAnonymousContent();
+  tmp->UnlinkSource();
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGUseElement,
+                                                  SVGUseElementBase)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOriginal)
+  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mClone)
+  tmp->mSource.Traverse(&cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_ADDREF_INHERITED(SVGUseElement,SVGUseElementBase)
+NS_IMPL_RELEASE_INHERITED(SVGUseElement,SVGUseElementBase)
+
+NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(SVGUseElement)
+  NS_INTERFACE_TABLE_INHERITED(SVGUseElement, nsIMutationObserver)
+NS_INTERFACE_TABLE_TAIL_INHERITING(SVGUseElementBase)
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGUseElement::SVGUseElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : SVGUseElementBase(aNodeInfo), mSource(this)
+{
+}
+
+SVGUseElement::~SVGUseElement()
+{
+  UnlinkSource();
+}
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+nsresult
+SVGUseElement::Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const
+{
+  *aResult = nullptr;
+  already_AddRefed<mozilla::dom::NodeInfo> ni = RefPtr<mozilla::dom::NodeInfo>(aNodeInfo).forget();
+  SVGUseElement *it = new SVGUseElement(ni);
+
+  nsCOMPtr<nsINode> kungFuDeathGrip(it);
+  nsresult rv1 = it->Init();
+  nsresult rv2 = const_cast<SVGUseElement*>(this)->CopyInnerTo(it);
+
+  // SVGUseElement specific portion - record who we cloned from
+  it->mOriginal = const_cast<SVGUseElement*>(this);
+
+  if (NS_SUCCEEDED(rv1) && NS_SUCCEEDED(rv2)) {
+    kungFuDeathGrip.swap(*aResult);
+  }
+
+  return NS_FAILED(rv1) ? rv1 : rv2;
+}
+
+already_AddRefed<SVGAnimatedString>
+SVGUseElement::Href()
+{
+  return mStringAttributes[HREF].IsExplicitlySet()
+         ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+         : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+
+already_AddRefed<SVGAnimatedLength>
+SVGUseElement::X()
+{
+  return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGUseElement::Y()
+{
+  return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGUseElement::Width()
+{
+  return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<SVGAnimatedLength>
+SVGUseElement::Height()
+{
+  return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
+}
+
+//----------------------------------------------------------------------
+// nsIMutationObserver methods
+
+void
+SVGUseElement::CharacterDataChanged(nsIDocument *aDocument,
+                                    nsIContent *aContent,
+                                    CharacterDataChangeInfo* aInfo)
+{
+  if (nsContentUtils::IsInSameAnonymousTree(this, aContent)) {
+    TriggerReclone();
+  }
+}
+
+void
+SVGUseElement::AttributeChanged(nsIDocument* aDocument,
+                                Element* aElement,
+                                int32_t aNameSpaceID,
+                                nsIAtom* aAttribute,
+                                int32_t aModType,
+                                const nsAttrValue* aOldValue)
+{
+  if (nsContentUtils::IsInSameAnonymousTree(this, aElement)) {
+    TriggerReclone();
+  }
+}
+
+void
+SVGUseElement::ContentAppended(nsIDocument *aDocument,
+                               nsIContent *aContainer,
+                               nsIContent *aFirstNewContent,
+                               int32_t aNewIndexInContainer)
+{
+  if (nsContentUtils::IsInSameAnonymousTree(this, aContainer)) {
+    TriggerReclone();
+  }
+}
+
+void
+SVGUseElement::ContentInserted(nsIDocument *aDocument,
+                               nsIContent *aContainer,
+                               nsIContent *aChild,
+                               int32_t aIndexInContainer)
+{
+  if (nsContentUtils::IsInSameAnonymousTree(this, aChild)) {
+    TriggerReclone();
+  }
+}
+
+void
+SVGUseElement::ContentRemoved(nsIDocument *aDocument,
+                              nsIContent *aContainer,
+                              nsIContent *aChild,
+                              int32_t aIndexInContainer,
+                              nsIContent *aPreviousSibling)
+{
+  if (nsContentUtils::IsInSameAnonymousTree(this, aChild)) {
+    TriggerReclone();
+  }
+}
+
+void
+SVGUseElement::NodeWillBeDestroyed(const nsINode *aNode)
+{
+  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+  UnlinkSource();
+}
+
+//----------------------------------------------------------------------
+
+nsIContent*
+SVGUseElement::CreateAnonymousContent()
+{
+  mClone = nullptr;
+
+  if (mSource.get()) {
+    mSource.get()->RemoveMutationObserver(this);
+  }
+
+  LookupHref();
+  nsIContent* targetContent = mSource.get();
+  if (!targetContent)
+    return nullptr;
+
+  // make sure target is valid type for <use>
+  // QIable nsSVGGraphicsElement would eliminate enumerating all elements
+  if (!targetContent->IsAnyOfSVGElements(nsGkAtoms::svg,
+                                         nsGkAtoms::symbol,
+                                         nsGkAtoms::g,
+                                         nsGkAtoms::path,
+                                         nsGkAtoms::text,
+                                         nsGkAtoms::rect,
+                                         nsGkAtoms::circle,
+                                         nsGkAtoms::ellipse,
+                                         nsGkAtoms::line,
+                                         nsGkAtoms::polyline,
+                                         nsGkAtoms::polygon,
+                                         nsGkAtoms::image,
+                                         nsGkAtoms::use))
+    return nullptr;
+
+  // circular loop detection
+
+  // check 1 - check if we're a document descendent of the target
+  if (nsContentUtils::ContentIsDescendantOf(this, targetContent))
+    return nullptr;
+
+  // check 2 - check if we're a clone, and if we already exist in the hierarchy
+  if (GetParent() && mOriginal) {
+    for (nsCOMPtr<nsIContent> content = GetParent();
+         content;
+         content = content->GetParent()) {
+      if (content->IsSVGElement(nsGkAtoms::use) &&
+          static_cast<SVGUseElement*>(content.get())->mOriginal == mOriginal) {
+        return nullptr;
+      }
+    }
+  }
+
+  nsCOMPtr<nsINode> newnode;
+  nsCOMArray<nsINode> unused;
+  nsNodeInfoManager* nodeInfoManager =
+    targetContent->OwnerDoc() == OwnerDoc() ?
+      nullptr : OwnerDoc()->NodeInfoManager();
+  nsNodeUtils::Clone(targetContent, true, nodeInfoManager, unused,
+                     getter_AddRefs(newnode));
+
+  nsCOMPtr<nsIContent> newcontent = do_QueryInterface(newnode);
+
+  if (!newcontent)
+    return nullptr;
+
+  if (newcontent->IsSVGElement(nsGkAtoms::symbol)) {
+    nsIDocument *document = GetComposedDoc();
+    if (!document)
+      return nullptr;
+
+    nsNodeInfoManager *nodeInfoManager = document->NodeInfoManager();
+    if (!nodeInfoManager)
+      return nullptr;
+
+    RefPtr<mozilla::dom::NodeInfo> nodeInfo;
+    nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::svg, nullptr,
+                                            kNameSpaceID_SVG,
+                                            nsIDOMNode::ELEMENT_NODE);
+
+    nsCOMPtr<nsIContent> svgNode;
+    NS_NewSVGSVGElement(getter_AddRefs(svgNode), nodeInfo.forget(),
+                        NOT_FROM_PARSER);
+
+    if (!svgNode)
+      return nullptr;
+
+    // copy attributes
+    BorrowedAttrInfo info;
+    uint32_t i;
+    for (i = 0; (info = newcontent->GetAttrInfoAt(i)); i++) {
+      nsAutoString value;
+      int32_t nsID = info.mName->NamespaceID();
+      nsIAtom* lname = info.mName->LocalName();
+
+      info.mValue->ToString(value);
+
+      svgNode->SetAttr(nsID, lname, info.mName->GetPrefix(), value, false);
+    }
+
+    // move the children over
+    uint32_t num = newcontent->GetChildCount();
+    for (i = 0; i < num; i++) {
+      nsCOMPtr<nsIContent> child = newcontent->GetFirstChild();
+      newcontent->RemoveChildAt(0, false);
+      svgNode->InsertChildAt(child, i, true);
+    }
+
+    newcontent = svgNode;
+  }
+
+  if (newcontent->IsAnyOfSVGElements(nsGkAtoms::svg, nsGkAtoms::symbol)) {
+    nsSVGElement *newElement = static_cast<nsSVGElement*>(newcontent.get());
+
+    if (mLengthAttributes[ATTR_WIDTH].IsExplicitlySet())
+      newElement->SetLength(nsGkAtoms::width, mLengthAttributes[ATTR_WIDTH]);
+    if (mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet())
+      newElement->SetLength(nsGkAtoms::height, mLengthAttributes[ATTR_HEIGHT]);
+  }
+
+  // Set up its base URI correctly
+  nsCOMPtr<nsIURI> baseURI = targetContent->GetBaseURI();
+  if (!baseURI)
+    return nullptr;
+  newcontent->SetExplicitBaseURI(baseURI);
+
+  targetContent->AddMutationObserver(this);
+  mClone = newcontent;
+
+#ifdef DEBUG
+  // Our anonymous clone can get restyled by various things
+  // (e.g. SMIL).  Reconstructing its frame is OK, though, because
+  // it's going to be our _only_ child in the frame tree, so can't get
+  // mis-ordered with anything.
+  mClone->SetProperty(nsGkAtoms::restylableAnonymousNode,
+                      reinterpret_cast<void*>(true));
+#endif // DEBUG
+
+  return mClone;
+}
+
+nsIURI*
+SVGUseElement::GetSourceDocURI()
+{
+  nsIContent* targetContent = mSource.get();
+  if (!targetContent)
+    return nullptr;
+
+  return targetContent->OwnerDoc()->GetDocumentURI();
+}
+
+void
+SVGUseElement::DestroyAnonymousContent()
+{
+  nsContentUtils::DestroyAnonymousContent(&mClone);
+}
+
+bool
+SVGUseElement::OurWidthAndHeightAreUsed() const
+{
+  return mClone && mClone->IsAnyOfSVGElements(nsGkAtoms::svg, nsGkAtoms::symbol);
+}
+
+//----------------------------------------------------------------------
+// implementation helpers
+
+void
+SVGUseElement::SyncWidthOrHeight(nsIAtom* aName)
+{
+  NS_ASSERTION(aName == nsGkAtoms::width || aName == nsGkAtoms::height,
+               "The clue is in the function name");
+  NS_ASSERTION(OurWidthAndHeightAreUsed(), "Don't call this");
+
+  if (OurWidthAndHeightAreUsed()) {
+    nsSVGElement *target = static_cast<nsSVGElement*>(mClone.get());
+    uint32_t index = *sLengthInfo[ATTR_WIDTH].mName == aName ? ATTR_WIDTH : ATTR_HEIGHT;
+
+    if (mLengthAttributes[index].IsExplicitlySet()) {
+      target->SetLength(aName, mLengthAttributes[index]);
+      return;
+    }
+    if (mClone->IsSVGElement(nsGkAtoms::svg)) {
+      // Our width/height attribute is now no longer explicitly set, so we
+      // need to revert the clone's width/height to the width/height of the
+      // content that's being cloned.
+      TriggerReclone();
+      return;
+    }
+    // Our width/height attribute is now no longer explicitly set, so we
+    // need to set the value to 100%
+    nsSVGLength2 length;
+    length.Init(SVGContentUtils::XY, 0xff,
+                100, nsIDOMSVGLength::SVG_LENGTHTYPE_PERCENTAGE);
+    target->SetLength(aName, length);
+    return;
+  }
+}
+
+void
+SVGUseElement::LookupHref()
+{
+  nsAutoString href;
+  if (mStringAttributes[HREF].IsExplicitlySet()) {
+    mStringAttributes[HREF].GetAnimValue(href, this);
+  } else {
+    mStringAttributes[XLINK_HREF].GetAnimValue(href, this);
+  }
+
+  if (href.IsEmpty()) {
+    return;
+  }
+
+  nsCOMPtr<nsIURI> targetURI;
+  nsCOMPtr<nsIURI> baseURI = mOriginal ? mOriginal->GetBaseURI() : GetBaseURI();
+  nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(targetURI), href,
+                                            GetComposedDoc(), baseURI);
+
+  mSource.Reset(this, targetURI);
+}
+
+void
+SVGUseElement::TriggerReclone()
+{
+  nsIDocument *doc = GetComposedDoc();
+  if (!doc)
+    return;
+  nsIPresShell *presShell = doc->GetShell();
+  if (!presShell)
+    return;
+  presShell->PostRecreateFramesFor(this);
+}
+
+void
+SVGUseElement::UnlinkSource()
+{
+  if (mSource.get()) {
+    mSource.get()->RemoveMutationObserver(this);
+  }
+  mSource.Unlink();
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+/* virtual */ gfxMatrix
+SVGUseElement::PrependLocalTransformsTo(
+  const gfxMatrix &aMatrix, SVGTransformTypes aWhich) const
+{
+  // 'transform' attribute:
+  gfxMatrix fromUserSpace =
+    SVGUseElementBase::PrependLocalTransformsTo(aMatrix, aWhich);
+  if (aWhich == eUserSpaceToParent) {
+    return fromUserSpace;
+  }
+  // our 'x' and 'y' attributes:
+  float x, y;
+  const_cast<SVGUseElement*>(this)->GetAnimatedLengthValues(&x, &y, nullptr);
+  gfxMatrix toUserSpace = gfxMatrix::Translation(x, y);
+  if (aWhich == eChildToUserSpace) {
+    return toUserSpace * aMatrix;
+  }
+  MOZ_ASSERT(aWhich == eAllTransforms, "Unknown TransformTypes");
+  return toUserSpace * fromUserSpace;
+}
+
+/* virtual */ bool
+SVGUseElement::HasValidDimensions() const
+{
+  return (!mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() ||
+           mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0) &&
+         (!mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() ||
+           mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0);
+}
+
+nsSVGElement::LengthAttributesInfo
+SVGUseElement::GetLengthInfo()
+{
+  return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+                              ArrayLength(sLengthInfo));
+}
+
+nsSVGElement::StringAttributesInfo
+SVGUseElement::GetStringInfo()
+{
+  return StringAttributesInfo(mStringAttributes, sStringInfo,
+                              ArrayLength(sStringInfo));
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+NS_IMETHODIMP_(bool)
+SVGUseElement::IsAttributeMapped(const nsIAtom* name) const
+{
+  static const MappedAttributeEntry* const map[] = {
+    sFEFloodMap,
+    sFiltersMap,
+    sFontSpecificationMap,
+    sGradientStopMap,
+    sLightingEffectsMap,
+    sMarkersMap,
+    sTextContentElementsMap,
+    sViewportsMap
+  };
+
+  return FindAttributeDependence(name, map) ||
+    SVGUseElementBase::IsAttributeMapped(name);
+}
+
+} // namespace dom
+} // namespace mozilla