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// Copyright 2013 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/predictor_tab_helper.h"
#include "base/command_line.h"
#include "chrome/browser/net/predictor.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/frame_navigate_params.h"
DEFINE_WEB_CONTENTS_USER_DATA_KEY(chrome_browser_net::PredictorTabHelper);
using content::BrowserThread;
namespace {
bool IsUserLinkNavigationRequest(content::PageTransition page_transition) {
bool is_link = (content::PageTransitionStripQualifier(page_transition) ==
content::PAGE_TRANSITION_LINK);
bool is_forward_back = (page_transition &
content::PAGE_TRANSITION_FORWARD_BACK) != 0;
// Tracking navigation session including client-side redirect
// is currently not supported.
bool is_client_redirect = (page_transition &
content::PAGE_TRANSITION_CLIENT_REDIRECT) != 0;
return is_link && !is_forward_back && !is_client_redirect;
}
} // namespace
namespace chrome_browser_net {
PredictorTabHelper::PredictorTabHelper(content::WebContents* web_contents)
: content::WebContentsObserver(web_contents) {
}
PredictorTabHelper::~PredictorTabHelper() {
}
void PredictorTabHelper::DidStartNavigationToPendingEntry(
const GURL& url,
content::NavigationController::ReloadType reload_type) {
Profile* profile =
Profile::FromBrowserContext(web_contents()->GetBrowserContext());
chrome_browser_net::Predictor* predictor = profile->GetNetworkPredictor();
if (!predictor)
return;
if (url.SchemeIs(url::kHttpScheme) || url.SchemeIs(url::kHttpsScheme))
predictor->PreconnectUrlAndSubresources(url, GURL());
}
void PredictorTabHelper::DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) {
if (!IsUserLinkNavigationRequest(params.transition) ||
!(params.url.SchemeIsHTTPOrHTTPS()))
return;
Profile* profile = Profile::FromBrowserContext(
web_contents()->GetBrowserContext());
Predictor* predictor = profile->GetNetworkPredictor();
if (predictor) {
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&Predictor::RecordLinkNavigation,
base::Unretained(predictor),
params.url));
}
}
} // namespace chrome_browser_net
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