| // 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 (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kChromeFrame) && |
| (url.SchemeIs(content::kHttpScheme) || |
| url.SchemeIs(content::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 |