Add support for 'href' (w/o XLink NS) for various SVG elements

third_party/WebKit/Source/core/svg/SVGAnimatedHref.cpp

Index: third_party/WebKit/Source/core/svg/SVGAnimatedHref.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGAnimatedHref.cpp b/third_party/WebKit/Source/core/svg/SVGAnimatedHref.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9202a54f3fae2f588013ed2524254ae642cb1f65
--- /dev/null
+++ b/third_party/WebKit/Source/core/svg/SVGAnimatedHref.cpp
@@ -0,0 +1,123 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/svg/SVGAnimatedHref.h"
+
+#include "core/SVGNames.h"
+#include "core/XLinkNames.h"
+#include "core/frame/UseCounter.h"
+#include "core/svg/SVGElement.h"
+
+namespace blink {
+
+PassRefPtrWillBeRawPtr<SVGAnimatedHref> SVGAnimatedHref::create(SVGElement* contextElement)
+{
+    return adoptRefWillBeNoop(new SVGAnimatedHref(contextElement));
+}
+
+DEFINE_TRACE(SVGAnimatedHref)
+{
+    visitor->trace(m_href);
+    visitor->trace(m_xlinkHref);
+    SVGAnimatedString::trace(visitor);
+}
+
+SVGAnimatedHref::SVGAnimatedHref(SVGElement* contextElement)
+    : SVGAnimatedString(contextElement, SVGNames::hrefAttr, nullptr)
+    , m_href(SVGAnimatedString::create(contextElement, SVGNames::hrefAttr, SVGString::create()))
+    , m_xlinkHref(SVGAnimatedString::create(contextElement, XLinkNames::hrefAttr, SVGString::create()))
+{
+}
+
+void SVGAnimatedHref::addToPropertyMap(SVGElement* element)
+{
+    element->addToPropertyMap(m_href);
+    element->addToPropertyMap(m_xlinkHref);
+}
+
+bool SVGAnimatedHref::isKnownAttribute(const QualifiedName& attrName)
+{
+    return attrName.matches(SVGNames::hrefAttr) || attrName.matches(XLinkNames::hrefAttr);
+}
+
+SVGPropertyBase* SVGAnimatedHref::currentValueBase()
+{
+    ASSERT_NOT_REACHED();
+    return nullptr;
+}
+
+const SVGPropertyBase& SVGAnimatedHref::baseValueBase() const
+{
+    ASSERT_NOT_REACHED();
+    return SVGAnimatedString::baseValueBase();
+}
+
+bool SVGAnimatedHref::isAnimating() const
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGAnimatedHref::createAnimatedValue()
+{
+    ASSERT_NOT_REACHED();
+    return nullptr;
+}
+
+void SVGAnimatedHref::setAnimatedValue(PassRefPtrWillBeRawPtr<SVGPropertyBase>)
+{
+    ASSERT_NOT_REACHED();
+}
+
+void SVGAnimatedHref::animationEnded()
+{
+    ASSERT_NOT_REACHED();
+}
+
+SVGParsingError SVGAnimatedHref::setBaseValueAsString(const String&)
+{
+    ASSERT_NOT_REACHED();
+    return SVGParseStatus::NoError;
+}
+
+bool SVGAnimatedHref::needsSynchronizeAttribute()
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+void SVGAnimatedHref::synchronizeAttribute()
+{
+    ASSERT_NOT_REACHED();
+}
+
+String SVGAnimatedHref::baseVal()
+{
+    UseCounter::count(contextElement()->document(), UseCounter::SVGHrefBaseVal);
+    return backingHref()->baseVal();
+}
+
+void SVGAnimatedHref::setBaseVal(const String& value, ExceptionState& exceptionState)
+{
+    UseCounter::count(contextElement()->document(), UseCounter::SVGHrefBaseVal);
+    backingHref()->setBaseVal(value, exceptionState);
+}
+
+String SVGAnimatedHref::animVal()
+{
+    UseCounter::count(contextElement()->document(), UseCounter::SVGHrefAnimVal);
+    // We should only animate (non-XLink) 'href'.
+    return m_href->animVal();
+}
+
+SVGAnimatedString* SVGAnimatedHref::backingHref() const
+{
+    if (m_href->isSpecified())
+        return m_href.get();
+    if (m_xlinkHref->isSpecified())
+        return m_xlinkHref.get();
+    return m_href.get();
+}
+
+} // namespace blink