StorageNamespaceProvider.cpp [plain text]
#include "config.h"
#include "StorageNamespaceProvider.h"
#include "Document.h"
#include "Page.h"
#include "SecurityOriginData.h"
#include "StorageArea.h"
#include "StorageNamespace.h"
namespace WebCore {
unsigned localStorageDatabaseQuotaInBytes = 5 * 1024 * 1024;
StorageNamespaceProvider::StorageNamespaceProvider()
{
}
StorageNamespaceProvider::~StorageNamespaceProvider()
{
ASSERT(m_pages.isEmpty());
}
void StorageNamespaceProvider::addPage(Page& page)
{
ASSERT(!m_pages.contains(&page));
m_pages.add(&page);
}
void StorageNamespaceProvider::removePage(Page& page)
{
ASSERT(m_pages.contains(&page));
m_pages.remove(&page);
}
RefPtr<StorageArea> StorageNamespaceProvider::localStorageArea(Document& document)
{
ASSERT(document.page());
bool ephemeral = document.page()->usesEphemeralSession();
bool transient = !document.securityOrigin().canAccessLocalStorage(&document.topOrigin());
RefPtr<StorageNamespace> storageNamespace;
if (transient)
storageNamespace = &transientLocalStorageNamespace(document.topOrigin());
else if (ephemeral)
storageNamespace = document.page()->ephemeralLocalStorage();
else
storageNamespace = &localStorageNamespace();
return storageNamespace->storageArea(SecurityOriginData::fromSecurityOrigin(document.securityOrigin()));
}
StorageNamespace& StorageNamespaceProvider::localStorageNamespace()
{
if (!m_localStorageNamespace)
m_localStorageNamespace = createLocalStorageNamespace(localStorageDatabaseQuotaInBytes);
return *m_localStorageNamespace;
}
StorageNamespace& StorageNamespaceProvider::transientLocalStorageNamespace(SecurityOrigin& securityOrigin)
{
auto& slot = m_transientLocalStorageMap.add(&securityOrigin, nullptr).iterator->value;
if (!slot)
slot = createTransientLocalStorageNamespace(securityOrigin, localStorageDatabaseQuotaInBytes);
return *slot;
}
}