void RenderCounter::destroyCounterNodes(RenderObject* owner)
{
CounterMaps& maps = counterMaps();
CounterMaps::iterator mapsIterator = maps.find(owner);
if (mapsIterator == maps.end())
return;
CounterMap* map = mapsIterator->value.get();
CounterMap::const_iterator end = map->end();
for (CounterMap::const_iterator it = map->begin(); it != end; ++it) {
destroyCounterNodeWithoutMapRemoval(it->key, it->value.get());
}
maps.remove(mapsIterator);
owner->setHasCounterNodeMap(false);
}
void RenderCounter::destroyCounterNodes(RenderObject* owner)
{
CounterMaps& maps = counterMaps();
CounterMaps::iterator mapsIterator = maps.find(owner);
if (mapsIterator == maps.end())
return;
CounterMap* map = mapsIterator->second;
CounterMap::const_iterator end = map->end();
for (CounterMap::const_iterator it = map->begin(); it != end; ++it) {
AtomicString identifier(it->first.get());
destroyCounterNodeWithoutMapRemoval(identifier, it->second.get());
}
maps.remove(mapsIterator);
delete map;
owner->setHasCounterNodeMap(false);
}
void RenderCounter::destroyCounterNode(RenderObject* owner, const AtomicString& identifier)
{
CounterMap* map = counterMaps().get(owner);
if (!map)
return;
CounterMap::iterator mapIterator = map->find(identifier);
if (mapIterator == map->end())
return;
destroyCounterNodeWithoutMapRemoval(identifier, mapIterator->value.get());
map->remove(mapIterator);
// We do not delete "map" here even if empty because we expect to reuse
// it soon. In order for a renderer to lose all its counters permanently,
// a style change for the renderer involving removal of all counter
// directives must occur, in which case, RenderCounter::destroyCounterNodes()
// must be called.
// The destruction of the Renderer (possibly caused by the removal of its
// associated DOM node) is the other case that leads to the permanent
// destruction of all counters attached to a Renderer. In this case
// RenderCounter::destroyCounterNodes() must be and is now called, too.
// RenderCounter::destroyCounterNodes() handles destruction of the counter
// map associated with a renderer, so there is no risk in leaking the map.
}
