Add m-esr52 at 52.6.0

1 files changed, 288 insertions, 0 deletions

diff --git a/dom/svg/SVGMPathElement.cpp b/dom/svg/SVGMPathElement.cpp
new file mode 100644
index 000000000..4a137f8fc
--- /dev/null
+++ b/dom/svg/SVGMPathElement.cpp
@@ -0,0 +1,288 @@
+/* -*- 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/SVGMPathElement.h"
+#include "nsDebug.h"
+#include "mozilla/dom/SVGAnimateMotionElement.h"
+#include "mozilla/dom/SVGPathElement.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/SVGMPathElementBinding.h"
+#include "nsIURI.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(MPath)
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGMPathElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
+{
+  return SVGMPathElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+nsSVGElement::StringInfo SVGMPathElement::sStringInfo[2] =
+{
+  { &nsGkAtoms::href, kNameSpaceID_None, false },
+  { &nsGkAtoms::href, kNameSpaceID_XLink, false }
+};
+
+// Cycle collection magic -- based on SVGUseElement
+NS_IMPL_CYCLE_COLLECTION_CLASS(SVGMPathElement)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGMPathElement,
+                                                SVGMPathElementBase)
+  tmp->UnlinkHrefTarget(false);
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGMPathElement,
+                                                  SVGMPathElementBase)
+  tmp->mHrefTarget.Traverse(&cb);
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_ADDREF_INHERITED(SVGMPathElement,SVGMPathElementBase)
+NS_IMPL_RELEASE_INHERITED(SVGMPathElement,SVGMPathElementBase)
+
+NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(SVGMPathElement)
+  NS_INTERFACE_TABLE_INHERITED(SVGMPathElement, nsIDOMNode, nsIDOMElement,
+                               nsIDOMSVGElement,
+                               nsIMutationObserver)
+NS_INTERFACE_TABLE_TAIL_INHERITING(SVGMPathElementBase)
+
+// Constructor
+SVGMPathElement::SVGMPathElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+  : SVGMPathElementBase(aNodeInfo),
+    mHrefTarget(this)
+{
+}
+
+SVGMPathElement::~SVGMPathElement()
+{
+  UnlinkHrefTarget(false);
+}
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGMPathElement)
+
+already_AddRefed<SVGAnimatedString>
+SVGMPathElement::Href()
+{
+  return mStringAttributes[HREF].IsExplicitlySet()
+         ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+         : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods
+
+nsresult
+SVGMPathElement::BindToTree(nsIDocument* aDocument,
+                            nsIContent* aParent,
+                            nsIContent* aBindingParent,
+                            bool aCompileEventHandlers)
+{
+  MOZ_ASSERT(!mHrefTarget.get(),
+             "Shouldn't have href-target yet (or it should've been cleared)");
+  nsresult rv = SVGMPathElementBase::BindToTree(aDocument, aParent,
+                                                aBindingParent,
+                                                aCompileEventHandlers);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (aDocument) {
+    const nsAttrValue* hrefAttrValue =
+      HasAttr(kNameSpaceID_None, nsGkAtoms::href)
+      ? mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_None)
+      : mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
+    if (hrefAttrValue) {
+      UpdateHrefTarget(aParent, hrefAttrValue->GetStringValue());
+    }
+  }
+
+  return NS_OK;
+}
+
+void
+SVGMPathElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+  UnlinkHrefTarget(true);
+  SVGMPathElementBase::UnbindFromTree(aDeep, aNullParent);
+}
+
+bool
+SVGMPathElement::ParseAttribute(int32_t aNamespaceID,
+                                nsIAtom* aAttribute,
+                                const nsAString& aValue,
+                                nsAttrValue& aResult)
+{
+  bool returnVal =
+    SVGMPathElementBase::ParseAttribute(aNamespaceID, aAttribute,
+                                          aValue, aResult);
+  if ((aNamespaceID == kNameSpaceID_XLink ||
+       aNamespaceID == kNameSpaceID_None ) &&
+      aAttribute == nsGkAtoms::href &&
+      IsInUncomposedDoc()) {
+    // Note: If we fail the IsInDoc call, it's ok -- we'll update the target
+    // on next BindToTree call.
+
+    // Note: "href" takes priority over xlink:href. So if "xlink:href" is being
+    // set here, we only let that update our target if "href" is *unset*.
+    if (aNamespaceID != kNameSpaceID_XLink ||
+        !mStringAttributes[HREF].IsExplicitlySet()) {
+      UpdateHrefTarget(GetParent(), aValue);
+    }
+  }
+  return returnVal;
+}
+
+nsresult
+SVGMPathElement::UnsetAttr(int32_t aNamespaceID,
+                           nsIAtom* aAttribute, bool aNotify)
+{
+  nsresult rv = SVGMPathElementBase::UnsetAttr(aNamespaceID, aAttribute,
+                                               aNotify);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (aAttribute == nsGkAtoms::href) {
+    if (aNamespaceID == kNameSpaceID_None) {
+      UnlinkHrefTarget(true);
+
+      // After unsetting href, we may still have xlink:href, so we should
+      // try to add it back.
+      const nsAttrValue* xlinkHref =
+        mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
+      if (xlinkHref) {
+        UpdateHrefTarget(GetParent(), xlinkHref->GetStringValue());
+      }
+    } else if (!HasAttr(kNameSpaceID_None, nsGkAtoms::href)) {
+      UnlinkHrefTarget(true);
+    } // else: we unset xlink:href, but we still have href attribute, so keep
+      // the target linking to href.
+  }
+
+  return NS_OK;
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+nsSVGElement::StringAttributesInfo
+SVGMPathElement::GetStringInfo()
+{
+  return StringAttributesInfo(mStringAttributes, sStringInfo,
+                              ArrayLength(sStringInfo));
+}
+
+//----------------------------------------------------------------------
+// nsIMutationObserver methods
+
+void
+SVGMPathElement::AttributeChanged(nsIDocument* aDocument,
+                                  Element* aElement,
+                                  int32_t aNameSpaceID,
+                                  nsIAtom* aAttribute,
+                                  int32_t aModType,
+                                  const nsAttrValue* aOldValue)
+{
+  if (aNameSpaceID == kNameSpaceID_None) {
+    if (aAttribute == nsGkAtoms::d) {
+      NotifyParentOfMpathChange(GetParent());
+    }
+  }
+}
+
+//----------------------------------------------------------------------
+// Public helper methods
+
+SVGPathElement*
+SVGMPathElement::GetReferencedPath()
+{
+  if (!HasAttr(kNameSpaceID_XLink, nsGkAtoms::href) &&
+      !HasAttr(kNameSpaceID_None, nsGkAtoms::href)) {
+    MOZ_ASSERT(!mHrefTarget.get(),
+               "We shouldn't have a href target "
+               "if we don't have an xlink:href or href attribute");
+    return nullptr;
+  }
+
+  nsIContent* genericTarget = mHrefTarget.get();
+  if (genericTarget && genericTarget->IsSVGElement(nsGkAtoms::path)) {
+    return static_cast<SVGPathElement*>(genericTarget);
+  }
+  return nullptr;
+}
+
+//----------------------------------------------------------------------
+// Protected helper methods
+
+void
+SVGMPathElement::UpdateHrefTarget(nsIContent* aParent,
+                                  const nsAString& aHrefStr)
+{
+  nsCOMPtr<nsIURI> targetURI;
+  nsCOMPtr<nsIURI> baseURI = GetBaseURI();
+  nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(targetURI),
+                                            aHrefStr, OwnerDoc(), baseURI);
+
+  // Stop observing old target (if any)
+  if (mHrefTarget.get()) {
+    mHrefTarget.get()->RemoveMutationObserver(this);
+  }
+
+  if (aParent) {
+    // Pass in |aParent| instead of |this| -- first argument is only used
+    // for a call to GetComposedDoc(), and |this| might not have a current
+    // document yet (if our caller is BindToTree).
+    mHrefTarget.Reset(aParent, targetURI);
+  } else {
+    // if we don't have a parent, then there's no animateMotion element
+    // depending on our target, so there's no point tracking it right now.
+    mHrefTarget.Unlink();
+  }
+
+  // Start observing new target (if any)
+  if (mHrefTarget.get()) {
+    mHrefTarget.get()->AddMutationObserver(this);
+  }
+
+  NotifyParentOfMpathChange(aParent);
+}
+
+void
+SVGMPathElement::UnlinkHrefTarget(bool aNotifyParent)
+{
+  // Stop observing old target (if any)
+  if (mHrefTarget.get()) {
+    mHrefTarget.get()->RemoveMutationObserver(this);
+  }
+  mHrefTarget.Unlink();
+
+  if (aNotifyParent) {
+    NotifyParentOfMpathChange(GetParent());
+  }
+}
+
+void
+SVGMPathElement::NotifyParentOfMpathChange(nsIContent* aParent)
+{
+  if (aParent && aParent->IsSVGElement(nsGkAtoms::animateMotion)) {
+
+    SVGAnimateMotionElement* animateMotionParent =
+      static_cast<SVGAnimateMotionElement*>(aParent);
+
+    animateMotionParent->MpathChanged();
+    AnimationNeedsResample();
+  }
+}
+
+} // namespace dom
+} // namespace mozilla
+