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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/net/prerender_interceptor.h"
#include <string>
#include "base/logging.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/io_thread.h"
#include "googleurl/src/gurl.h"
#include "net/base/load_flags.h"
DISABLE_RUNNABLE_METHOD_REFCOUNT(chrome_browser_net::PrerenderInterceptor);
namespace chrome_browser_net {
PrerenderInterceptor::PrerenderInterceptor()
: ALLOW_THIS_IN_INITIALIZER_LIST(
callback_(NewCallback(this,
&PrerenderInterceptor::PrerenderDispatch))) {
URLRequest::RegisterRequestInterceptor(this);
}
PrerenderInterceptor::PrerenderInterceptor(
PrerenderInterceptorCallback* callback)
: callback_(callback) {
URLRequest::RegisterRequestInterceptor(this);
}
PrerenderInterceptor::~PrerenderInterceptor() {
URLRequest::UnregisterRequestInterceptor(this);
}
net::URLRequestJob* PrerenderInterceptor::MaybeIntercept(
net::URLRequest* request) {
return NULL;
}
net::URLRequestJob* PrerenderInterceptor::MaybeInterceptResponse(
net::URLRequest* request) {
// TODO(gavinp): unfortunately, we can't figure out the origin
// of this request here on systems where the referrer is blocked by
// configuration.
// TODO(gavinp): note that the response still might be intercepted
// by a later interceptor. Should we write an interposing delegate
// and only prerender dispatch on requests that aren't intercepted?
// Or is this a slippery slope?
if (request->load_flags() & net::LOAD_PREFETCH) {
std::string mime_type;
request->GetMimeType(&mime_type);
if (mime_type == "text/html")
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
NewRunnableMethod(this,
&PrerenderInterceptor::RunCallbackFromUIThread,
request->url()));
}
return NULL;
}
void PrerenderInterceptor::RunCallbackFromUIThread(const GURL& url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
callback_->Run(url);
}
void PrerenderInterceptor::PrerenderDispatch(
const GURL& url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DVLOG(2) << "PrerenderDispatchOnUIThread: url=" << url;
}
} // namespace chrome_browser_net
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