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Diffstat (limited to 'WebCore/svg/SVGAnimatedPropertySynchronizer.h')
-rw-r--r-- | WebCore/svg/SVGAnimatedPropertySynchronizer.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/WebCore/svg/SVGAnimatedPropertySynchronizer.h b/WebCore/svg/SVGAnimatedPropertySynchronizer.h new file mode 100644 index 0000000..ddd0493 --- /dev/null +++ b/WebCore/svg/SVGAnimatedPropertySynchronizer.h @@ -0,0 +1,96 @@ +/* + Copyright (C) Research In Motion Limited 2010. All rights reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef SVGAnimatedPropertySynchronizer_h +#define SVGAnimatedPropertySynchronizer_h + +#include "SVGAnimatedPropertyTraits.h" + +#if ENABLE(SVG) +namespace WebCore { + +class SVGElement; + +// GetOwnerElementForType implementation +template<typename OwnerType, bool isDerivedFromSVGElement> +struct GetOwnerElementForType; + +template<typename OwnerType> +struct GetOwnerElementForType<OwnerType, true> : public Noncopyable { + static SVGElement* ownerElement(OwnerType* type) + { + return type; + } +}; + +template<typename OwnerType> +struct GetOwnerElementForType<OwnerType, false> : public Noncopyable { + static SVGElement* ownerElement(OwnerType* type) + { + SVGElement* context = type->contextElement(); + ASSERT(context); + return context; + } +}; + +// IsDerivedFromSVGElement implementation +template<typename OwnerType> +struct IsDerivedFromSVGElement : public Noncopyable { + static const bool value = true; +}; + +class SVGViewSpec; +template<> +struct IsDerivedFromSVGElement<SVGViewSpec> : public Noncopyable { + static const bool value = false; +}; + +// Helper template used for synchronizing SVG <-> XML properties +template<bool isDerivedFromSVGElement> +struct SVGAnimatedPropertySynchronizer { + static void synchronize(SVGElement*, const QualifiedName&, const AtomicString&); +}; + +template<> +struct SVGAnimatedPropertySynchronizer<true> { + static void synchronize(SVGElement* ownerElement, const QualifiedName& attrName, const AtomicString& value) + { + NamedNodeMap* namedAttrMap = ownerElement->attributes(false); + Attribute* old = namedAttrMap->getAttributeItem(attrName); + if (old && value.isNull()) + namedAttrMap->removeAttribute(old->name()); + else if (!old && !value.isNull()) + namedAttrMap->addAttribute(ownerElement->createAttribute(attrName, value)); + else if (old && !value.isNull()) + old->setValue(value); + } +}; + +template<> +struct SVGAnimatedPropertySynchronizer<false> { + static void synchronize(SVGElement*, const QualifiedName&, const AtomicString&) + { + // no-op, for types not inheriting from Element, thus nothing to synchronize + } +}; + +}; + +#endif +#endif |