chrome/browser/engagement/site_engagement_helper.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_HELPER_H_
   6 #define CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_HELPER_H_
   7
   8 #include "base/macros.h"
   9 #include "content/public/browser/web_contents_observer.h"
  10 #include "content/public/browser/web_contents_user_data.h"
  11
  12 namespace content {
  13 class WebContents;
  14 }
  15
  16 class GURL;
  17
  18 // Per-WebContents class to handle updating the site engagement scores for
  19 // origins as the user navigates.
  20 class SiteEngagementHelper
  21     : public content::WebContentsObserver,
  22       public content::WebContentsUserData<SiteEngagementHelper> {
  23  public:
  24   ~SiteEngagementHelper() override;
  25
  26  private:
  27   explicit SiteEngagementHelper(content::WebContents* web_contents);
  28   friend class content::WebContentsUserData<SiteEngagementHelper>;
  29
  30   // content::WebContentsObserver overrides.
  31   void DidStartNavigationToPendingEntry(
  32       const GURL& url,
  33       content::NavigationController::ReloadType reload_type) override;
  34
  35   DISALLOW_COPY_AND_ASSIGN(SiteEngagementHelper);
  36 };
  37
  38 #endif  // CHROME_BROWSER_ENGAGEMENT_SITE_ENGAGEMENT_HELPER_H_