void SVGDocumentExtensions::markPendingResourcesForRemoval(const AtomicString& id)
{
if (id.isEmpty())
return;
ASSERT(!m_pendingResourcesForRemoval.contains(id));
SVGPendingElements* existing = m_pendingResources.take(id);
if (existing && !existing->isEmpty())
m_pendingResourcesForRemoval.add(id, existing);
}
void SVGDocumentExtensions::addPendingResource(const AtomicString& id, PassRefPtr<SVGStyledElement> obj)
{
ASSERT(obj);
if (id.isEmpty())
return;
if (m_pendingResources.contains(id))
m_pendingResources.get(id)->add(obj);
else {
SVGPendingElements* set = new SVGPendingElements;
set->add(obj);
m_pendingResources.add(id, set);
}
}
bool SVGDocumentExtensions::isElementPendingResources(Element* element) const
{
// This algorithm takes time proportional to the number of pending resources and need not.
// If performance becomes an issue we can keep a counted set of elements and answer the question efficiently.
ASSERT(element);
for (const auto& entry : m_pendingResources) {
SVGPendingElements* elements = entry.value.get();
ASSERT(elements);
if (elements->contains(element))
return true;
}
return false;
}
bool SVGDocumentExtensions::isElementPendingResources(SVGStyledElement* element) const
{
// This algorithm takes time proportional to the number of pending resources and need not.
// If performance becomes an issue we can keep a counted set of elements and answer the question efficiently.
ASSERT(element);
HashMap<AtomicString, SVGPendingElements*>::const_iterator end = m_pendingResources.end();
for (HashMap<AtomicString, SVGPendingElements*>::const_iterator it = m_pendingResources.begin(); it != end; ++it) {
SVGPendingElements* elements = it->value;
ASSERT(elements);
if (elements->contains(element))
return true;
}
return false;
}
SVGStyledElement* SVGDocumentExtensions::removeElementFromPendingResourcesForRemoval(const AtomicString& id)
{
if (id.isEmpty())
return 0;
SVGPendingElements* resourceSet = m_pendingResourcesForRemoval.get(id);
if (!resourceSet || resourceSet->isEmpty())
return 0;
SVGPendingElements::iterator firstElement = resourceSet->begin();
SVGStyledElement* element = *firstElement;
resourceSet->remove(firstElement);
if (resourceSet->isEmpty())
removePendingResourceForRemoval(id);
return element;
}
void SVGDocumentExtensions::removeElementFromPendingResources(SVGStyledElement* element)
{
ASSERT(element);
// Remove the element from pending resources.
if (!m_pendingResources.isEmpty() && element->hasPendingResources()) {
Vector<AtomicString> toBeRemoved;
HashMap<AtomicString, SVGPendingElements*>::iterator end = m_pendingResources.end();
for (HashMap<AtomicString, SVGPendingElements*>::iterator it = m_pendingResources.begin(); it != end; ++it) {
SVGPendingElements* elements = it->value;
ASSERT(elements);
ASSERT(!elements->isEmpty());
elements->remove(element);
if (elements->isEmpty())
toBeRemoved.append(it->key);
}
element->clearHasPendingResourcesIfPossible();
// We use the removePendingResource function here because it deals with set lifetime correctly.
Vector<AtomicString>::iterator vectorEnd = toBeRemoved.end();
for (Vector<AtomicString>::iterator it = toBeRemoved.begin(); it != vectorEnd; ++it)
removePendingResource(*it);
}
// Remove the element from pending resources that were scheduled for removal.
if (!m_pendingResourcesForRemoval.isEmpty()) {
Vector<AtomicString> toBeRemoved;
HashMap<AtomicString, SVGPendingElements*>::iterator end = m_pendingResourcesForRemoval.end();
for (HashMap<AtomicString, SVGPendingElements*>::iterator it = m_pendingResourcesForRemoval.begin(); it != end; ++it) {
SVGPendingElements* elements = it->value;
ASSERT(elements);
ASSERT(!elements->isEmpty());
elements->remove(element);
if (elements->isEmpty())
toBeRemoved.append(it->key);
}
// We use the removePendingResourceForRemoval function here because it deals with set lifetime correctly.
Vector<AtomicString>::iterator vectorEnd = toBeRemoved.end();
for (Vector<AtomicString>::iterator it = toBeRemoved.begin(); it != vectorEnd; ++it)
removePendingResourceForRemoval(*it);
}
}
void SVGDocumentExtensions::removeElementFromPendingResources(Element* element)
{
ASSERT(element);
// Remove the element from pending resources.
if (!m_pendingResources.isEmpty() && element->hasPendingResources()) {
Vector<AtomicString> toBeRemoved;
for (const auto& entry : m_pendingResources) {
SVGPendingElements* elements = entry.value.get();
ASSERT(elements);
ASSERT(!elements->isEmpty());
elements->remove(element);
if (elements->isEmpty())
toBeRemoved.append(entry.key);
}
clearHasPendingResourcesIfPossible(element);
// We use the removePendingResource function here because it deals with set lifetime correctly.
for (const AtomicString& id : toBeRemoved)
removePendingResource(id);
}
// Remove the element from pending resources that were scheduled for removal.
if (!m_pendingResourcesForRemoval.isEmpty()) {
Vector<AtomicString> toBeRemoved;
for (const auto& entry : m_pendingResourcesForRemoval) {
SVGPendingElements* elements = entry.value.get();
ASSERT(elements);
ASSERT(!elements->isEmpty());
elements->remove(element);
if (elements->isEmpty())
toBeRemoved.append(entry.key);
}
// We use the removePendingResourceForRemoval function here because it deals with set lifetime correctly.
for (const AtomicString& id : toBeRemoved)
removePendingResourceForRemoval(id);
}
}
