1 files changed, 167 insertions, 0 deletions
diff --git a/dom/svg/nsSVGClass.cpp b/dom/svg/nsSVGClass.cpp
new file mode 100644
index 000000000..6b64c3be7
--- /dev/null
+++ b/dom/svg/nsSVGClass.cpp
@@ -0,0 +1,167 @@
+/* -*- 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 "nsSVGClass.h"
+
+#include "mozilla/dom/SVGAnimatedString.h"
+#include "mozilla/Move.h"
+#include "nsSVGElement.h"
+#include "nsSMILValue.h"
+#include "SMILStringType.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+struct DOMAnimatedString final : public SVGAnimatedString
+{
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DOMAnimatedString)
+
+  DOMAnimatedString(nsSVGClass* aVal, nsSVGElement* aSVGElement)
+    : SVGAnimatedString(aSVGElement)
+    , mVal(aVal)
+  {}
+
+  nsSVGClass* mVal; // kept alive because it belongs to content
+
+  void GetBaseVal(nsAString& aResult) override
+  {
+    mVal->GetBaseValue(aResult, mSVGElement);
+  }
+
+  void SetBaseVal(const nsAString& aValue) override
+  {
+    mVal->SetBaseValue(aValue, mSVGElement, true);
+  }
+
+  void GetAnimVal(nsAString& aResult) override;
+
+private:
+  ~DOMAnimatedString() {}
+};
+
+NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMAnimatedString, mSVGElement)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMAnimatedString)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMAnimatedString)
+
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMAnimatedString)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+already_AddRefed<SVGAnimatedString>
+nsSVGClass::ToDOMAnimatedString(nsSVGElement* aSVGElement)
+{
+  RefPtr<DOMAnimatedString> result = new DOMAnimatedString(this, aSVGElement);
+  return result.forget();
+}
+
+/* Implementation */
+
+void
+nsSVGClass::SetBaseValue(const nsAString& aValue,
+                         nsSVGElement *aSVGElement,
+                         bool aDoSetAttr)
+{
+  NS_ASSERTION(aSVGElement, "Null element passed to SetBaseValue");
+
+  aSVGElement->SetFlags(NODE_MAY_HAVE_CLASS);
+  if (aDoSetAttr) {
+    aSVGElement->SetAttr(kNameSpaceID_None, nsGkAtoms::_class, aValue, true);
+  }
+  if (mAnimVal) {
+    aSVGElement->AnimationNeedsResample();
+  }
+}
+
+void
+nsSVGClass::GetBaseValue(nsAString& aValue, const nsSVGElement *aSVGElement) const
+{
+  aSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, aValue);
+}
+
+void
+nsSVGClass::GetAnimValue(nsAString& aResult, const nsSVGElement *aSVGElement) const
+{
+  if (mAnimVal) {
+    aResult = *mAnimVal;
+    return;
+  }
+
+  aSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, aResult);
+}
+
+void
+nsSVGClass::SetAnimValue(const nsAString& aValue, nsSVGElement *aSVGElement)
+{
+  if (mAnimVal && mAnimVal->Equals(aValue)) {
+    return;
+  }
+  if (!mAnimVal) {
+    mAnimVal = new nsString();
+  }
+  *mAnimVal = aValue;
+  aSVGElement->SetFlags(NODE_MAY_HAVE_CLASS);
+  aSVGElement->DidAnimateClass();
+}
+
+void
+DOMAnimatedString::GetAnimVal(nsAString& aResult)
+{
+  mSVGElement->FlushAnimations();
+  mVal->GetAnimValue(aResult, mSVGElement);
+}
+
+nsISMILAttr*
+nsSVGClass::ToSMILAttr(nsSVGElement *aSVGElement)
+{
+  return new SMILString(this, aSVGElement);
+}
+
+nsresult
+nsSVGClass::SMILString::ValueFromString(const nsAString& aStr,
+                                        const dom::SVGAnimationElement* /*aSrcElement*/,
+                                        nsSMILValue& aValue,
+                                        bool& aPreventCachingOfSandwich) const
+{
+  nsSMILValue val(SMILStringType::Singleton());
+
+  *static_cast<nsAString*>(val.mU.mPtr) = aStr;
+  aValue = Move(val);
+  aPreventCachingOfSandwich = false;
+  return NS_OK;
+}
+
+nsSMILValue
+nsSVGClass::SMILString::GetBaseValue() const
+{
+  nsSMILValue val(SMILStringType::Singleton());
+  mSVGElement->GetAttr(kNameSpaceID_None, nsGkAtoms::_class,
+                       *static_cast<nsAString*>(val.mU.mPtr));
+  return val;
+}
+
+void
+nsSVGClass::SMILString::ClearAnimValue()
+{
+  if (mVal->mAnimVal) {
+    mVal->mAnimVal = nullptr;
+    mSVGElement->DidAnimateClass();
+  }
+}
+
+nsresult
+nsSVGClass::SMILString::SetAnimValue(const nsSMILValue& aValue)
+{
+  NS_ASSERTION(aValue.mType == SMILStringType::Singleton(),
+               "Unexpected type to assign animated value");
+  if (aValue.mType == SMILStringType::Singleton()) {
+    mVal->SetAnimValue(*static_cast<nsAString*>(aValue.mU.mPtr), mSVGElement);
+  }
+  return NS_OK;
+}