InjectedBundleCSSStyleDeclarationHandle.cpp [plain text]
#include "config.h"
#include "InjectedBundleCSSStyleDeclarationHandle.h"
#include <WebCore/CSSStyleDeclaration.h>
#include <wtf/HashMap.h>
#include <wtf/NeverDestroyed.h>
using namespace WebCore;
namespace WebKit {
typedef HashMap<CSSStyleDeclaration*, InjectedBundleCSSStyleDeclarationHandle*> DOMHandleCache;
static DOMHandleCache& domHandleCache()
{
static NeverDestroyed<DOMHandleCache> cache;
return cache;
}
PassRefPtr<InjectedBundleCSSStyleDeclarationHandle> InjectedBundleCSSStyleDeclarationHandle::getOrCreate(CSSStyleDeclaration* styleDeclaration)
{
if (!styleDeclaration)
return nullptr;
DOMHandleCache::AddResult result = domHandleCache().add(styleDeclaration, nullptr);
if (!result.isNewEntry)
return PassRefPtr<InjectedBundleCSSStyleDeclarationHandle>(result.iterator->value);
auto styleDeclarationHandle = adoptRef(*new InjectedBundleCSSStyleDeclarationHandle(*styleDeclaration));
result.iterator->value = styleDeclarationHandle.ptr();
return WTFMove(styleDeclarationHandle);
}
InjectedBundleCSSStyleDeclarationHandle::InjectedBundleCSSStyleDeclarationHandle(CSSStyleDeclaration& styleDeclaration)
: m_styleDeclaration(styleDeclaration)
{
}
InjectedBundleCSSStyleDeclarationHandle::~InjectedBundleCSSStyleDeclarationHandle()
{
domHandleCache().remove(m_styleDeclaration.ptr());
}
}