#include "config.h"
#include "LinkLoader.h"
#include "CSSStyleSheet.h"
#include "CachedCSSStyleSheet.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "ContainerNode.h"
#include "DNS.h"
#include "Document.h"
#include "Frame.h"
#include "FrameView.h"
#include "LinkRelAttribute.h"
#include "Settings.h"
#include "StyleResolver.h"
namespace WebCore {
LinkLoader::LinkLoader(LinkLoaderClient* client)
: m_client(client)
, m_linkLoadTimer(this, &LinkLoader::linkLoadTimerFired)
, m_linkLoadingErrorTimer(this, &LinkLoader::linkLoadingErrorTimerFired)
{
}
LinkLoader::~LinkLoader()
{
if (m_cachedLinkResource)
m_cachedLinkResource->removeClient(this);
}
void LinkLoader::linkLoadTimerFired(Timer& timer)
{
ASSERT_UNUSED(timer, &timer == &m_linkLoadTimer);
m_client->linkLoaded();
}
void LinkLoader::linkLoadingErrorTimerFired(Timer& timer)
{
ASSERT_UNUSED(timer, &timer == &m_linkLoadingErrorTimer);
m_client->linkLoadingErrored();
}
void LinkLoader::notifyFinished(CachedResource* resource)
{
ASSERT_UNUSED(resource, m_cachedLinkResource.get() == resource);
if (m_cachedLinkResource->errorOccurred())
m_linkLoadingErrorTimer.startOneShot(0);
else
m_linkLoadTimer.startOneShot(0);
m_cachedLinkResource->removeClient(this);
m_cachedLinkResource = 0;
}
bool LinkLoader::loadLink(const LinkRelAttribute& relAttribute, const String& type,
const String& sizes, const URL& href, Document* document)
{
if (relAttribute.m_iconType != InvalidIcon && href.isValid() && !href.isEmpty()) {
if (!m_client->shouldLoadLink())
return false;
document->addIconURL(href.string(), type, sizes, relAttribute.m_iconType);
}
if (relAttribute.m_isDNSPrefetch) {
Settings* settings = document->settings();
if (settings && settings->dnsPrefetchingEnabled() && href.isValid() && !href.isEmpty())
prefetchDNS(href.host());
}
#if ENABLE(LINK_PREFETCH)
if ((relAttribute.m_isLinkPrefetch || relAttribute.m_isLinkSubresource) && href.isValid() && document->frame()) {
if (!m_client->shouldLoadLink())
return false;
ResourceLoadPriority priority = ResourceLoadPriorityUnresolved;
CachedResource::Type type = CachedResource::LinkPrefetch;
if (relAttribute.m_isLinkSubresource) {
priority = ResourceLoadPriorityLow;
type = CachedResource::LinkSubresource;
}
CachedResourceRequest linkRequest(ResourceRequest(document->completeURL(href)), priority);
if (m_cachedLinkResource) {
m_cachedLinkResource->removeClient(this);
m_cachedLinkResource = 0;
}
m_cachedLinkResource = document->cachedResourceLoader()->requestLinkResource(type, linkRequest);
if (m_cachedLinkResource)
m_cachedLinkResource->addClient(this);
}
#endif
return true;
}
void LinkLoader::released()
{
}
}