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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"
#if ENABLE(SVG)
#include "RenderSVGShadowTreeRootContainer.h"
#include "MouseEvent.h"
#include "SVGShadowTreeElements.h"
#include "SVGUseElement.h"
namespace WebCore {
RenderSVGShadowTreeRootContainer::RenderSVGShadowTreeRootContainer(SVGUseElement* node)
: RenderSVGTransformableContainer(node)
, m_recreateTree(false)
{
}
RenderSVGShadowTreeRootContainer::~RenderSVGShadowTreeRootContainer()
{
if (m_shadowRoot && m_shadowRoot->attached()) {
m_shadowRoot->detach();
m_shadowRoot->clearShadowHost();
}
}
void RenderSVGShadowTreeRootContainer::updateStyle(Node::StyleChange change)
{
if (m_shadowRoot && m_shadowRoot->attached())
m_shadowRoot->recalcStyle(change);
}
void RenderSVGShadowTreeRootContainer::updateFromElement()
{
bool hadExistingTree = m_shadowRoot;
SVGUseElement* useElement = static_cast<SVGUseElement*>(node());
if (!m_shadowRoot) {
ASSERT(!m_recreateTree);
m_shadowRoot = SVGShadowTreeRootElement::create(document(), useElement);
useElement->buildPendingResource();
}
ASSERT(m_shadowRoot->shadowHost() == useElement);
bool shouldRecreateTree = m_recreateTree;
if (m_recreateTree) {
ASSERT(hadExistingTree);
if (m_shadowRoot->attached())
m_shadowRoot->detach();
m_shadowRoot->removeAllChildren();
m_recreateTree = false;
}
// Only rebuild the shadow tree, if we a) never had a tree or b) we were specifically asked to do so
// If the use element is a pending resource, and a) or b) is true, do nothing, and wait for the use
// element to be asked to buildPendingResource(), this will call us again, with m_recreateTrue=true.
if ((shouldRecreateTree || !hadExistingTree) && !useElement->isPendingResource()) {
useElement->buildShadowAndInstanceTree(m_shadowRoot.get());
// Attach shadow root element
m_shadowRoot->attachElement(style(), renderArena());
// Attach subtree, as if it was a regular non-shadow tree
for (Node* child = m_shadowRoot->firstChild(); child; child = child->nextSibling())
child->attach();
}
ASSERT(!m_recreateTree);
RenderSVGTransformableContainer::updateFromElement();
}
void RenderSVGShadowTreeRootContainer::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderSVGTransformableContainer::styleDidChange(diff, oldStyle);
if (RenderObject* shadowRootRenderer = m_shadowRoot ? m_shadowRoot->renderer() : 0)
shadowRootRenderer->setStyle(style());
}
Node* RenderSVGShadowTreeRootContainer::rootElement() const
{
return m_shadowRoot.get();
}
}
#endif
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