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32 #include "core/loader/PrerenderHandle.h"
34 #include "core/dom/Document.h"
35 #include "core/frame/Frame.h"
36 #include "core/loader/FrameLoader.h"
37 #include "core/loader/PrerendererClient.h"
38 #include "platform/Prerender.h"
39 #include "platform/weborigin/ReferrerPolicy.h"
40 #include "platform/weborigin/SecurityPolicy.h"
45 PassOwnPtr<PrerenderHandle> PrerenderHandle::create(Document& document, PrerenderClient* client, const KURL& url, const unsigned prerenderRelTypes)
47 // Prerenders are unlike requests in most ways (for instance, they pass down fragments, and they don't return data),
48 // but they do have referrers.
49 const ReferrerPolicy referrerPolicy = document.referrerPolicy();
51 if (!document.frame())
52 return PassOwnPtr<PrerenderHandle>();
54 const String referrer = SecurityPolicy::generateReferrerHeader(referrerPolicy, url, document.outgoingReferrer());
56 RefPtr<Prerender> prerender = Prerender::create(client, url, prerenderRelTypes, referrer, referrerPolicy);
58 PrerendererClient* prerendererClient = PrerendererClient::from(document.page());
59 if (prerendererClient)
60 prerendererClient->willAddPrerender(prerender.get());
63 return adoptPtr(new PrerenderHandle(document, prerender.release()));
66 PrerenderHandle::PrerenderHandle(Document& document, PassRefPtr<Prerender> prerender)
67 : DocumentLifecycleObserver(&document)
68 , m_prerender(prerender)
72 PrerenderHandle::~PrerenderHandle()
78 void PrerenderHandle::cancel()
80 // Avoid both abandoning and canceling the same prerender. In the abandon case, the LinkLoader cancels the
81 // PrerenderHandle as the Document is destroyed, even through the DocumentLifecycleObserver has already abandoned
85 m_prerender->cancel();
89 const KURL& PrerenderHandle::url() const
91 return m_prerender->url();
94 void PrerenderHandle::documentWasDetached()
97 m_prerender->abandon();
102 void PrerenderHandle::detach()
104 m_prerender->removeClient();