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/*
* 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.
*/
#include "config.h"
#include "SVGPathSegList.h"
#include "SVGAnimatedPathSegListPropertyTearOff.h"
#include "SVGPathElement.h"
#include "SVGPathSegWithContext.h"
namespace WebCore {
void SVGPathSegList::clearContextAndRoles()
{
ASSERT(m_values);
for (auto& item : *m_values)
static_cast<SVGPathSegWithContext*>(item.get())->setContextAndRole(nullptr, PathSegUndefinedRole);
}
ExceptionOr<void> SVGPathSegList::clear()
{
ASSERT(m_values);
if (m_values->isEmpty())
return { };
clearContextAndRoles();
return Base::clearValues();
}
ExceptionOr<SVGPathSegList::PtrListItemType> SVGPathSegList::getItem(unsigned index)
{
return Base::getItemValues(index);
}
ExceptionOr<SVGPathSegList::PtrListItemType> SVGPathSegList::replaceItem(PtrListItemType newItem, unsigned index)
{
// Not specified, but FF/Opera do it this way, and it's just sane.
if (!newItem)
return Exception { SVGException::SVG_WRONG_TYPE_ERR };
if (index < m_values->size()) {
ListItemType replacedItem = m_values->at(index);
ASSERT(replacedItem);
static_cast<SVGPathSegWithContext*>(replacedItem.get())->setContextAndRole(nullptr, PathSegUndefinedRole);
}
return Base::replaceItemValues(newItem, index);
}
ExceptionOr<SVGPathSegList::PtrListItemType> SVGPathSegList::removeItem(unsigned index)
{
auto result = Base::removeItemValues(index);
if (result.hasException())
return result;
auto removedItem = result.releaseReturnValue();
if (removedItem)
static_cast<SVGPathSegWithContext&>(*removedItem).setContextAndRole(nullptr, PathSegUndefinedRole);
return WTFMove(removedItem);
}
SVGPathElement* SVGPathSegList::contextElement() const
{
SVGElement* contextElement = m_animatedProperty->contextElement();
ASSERT(contextElement);
return downcast<SVGPathElement>(contextElement);
}
bool SVGPathSegList::processIncomingListItemValue(const ListItemType& newItem, unsigned* indexToModify)
{
SVGPathSegWithContext* newItemWithContext = static_cast<SVGPathSegWithContext*>(newItem.get());
RefPtr<SVGAnimatedProperty> animatedPropertyOfItem = newItemWithContext->animatedProperty();
// Alter the role, after calling animatedProperty(), as that may influence the returned animated property.
newItemWithContext->setContextAndRole(contextElement(), m_pathSegRole);
if (!animatedPropertyOfItem)
return true;
// newItem belongs to a SVGPathElement, but its associated SVGAnimatedProperty is not an animated list tear off.
// (for example: "pathElement.pathSegList.appendItem(pathElement.createSVGPathSegClosepath())")
if (!animatedPropertyOfItem->isAnimatedListTearOff())
return true;
// Spec: If newItem is already in a list, it is removed from its previous list before it is inserted into this list.
// 'newItem' is already living in another list. If it's not our list, synchronize the other lists wrappers after the removal.
bool livesInOtherList = animatedPropertyOfItem != m_animatedProperty;
RefPtr<SVGAnimatedPathSegListPropertyTearOff> propertyTearOff = static_pointer_cast<SVGAnimatedPathSegListPropertyTearOff>(animatedPropertyOfItem);
int indexToRemove = propertyTearOff->findItem(newItem.get());
ASSERT(indexToRemove != -1);
// Do not remove newItem if already in this list at the target index.
if (!livesInOtherList && indexToModify && static_cast<unsigned>(indexToRemove) == *indexToModify)
return false;
propertyTearOff->removeItemFromList(indexToRemove, livesInOtherList);
if (!indexToModify)
return true;
// If the item lived in our list, adjust the insertion index.
if (!livesInOtherList) {
unsigned& index = *indexToModify;
// Spec: If the item is already in this list, note that the index of the item to (replace|insert before) is before the removal of the item.
if (static_cast<unsigned>(indexToRemove) < index)
--index;
}
return true;
}
}
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