components/sync_driver/revisit/page_visit_observer.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 COMPONENTS_SYNC_DRIVER_REVISIT_PAGE_VISIT_OBSERVERE_H_
   6 #define COMPONENTS_SYNC_DRIVER_REVISIT_PAGE_VISIT_OBSERVERE_H_
   7
   8 #include "url/gurl.h"
   9
  10 namespace sync_driver {
  11
  12 // An interface that allows observers to be notified when a page is visited.
  13 class PageVisitObserver {
  14  public:
  15   // This enum represents the most common ways to visit a new page/URL.
  16   enum TransitionType {
  17     kTransitionPage = 0,
  18     kTransitionOmniboxUrl = 1,
  19     kTransitionOmniboxDefaultSearch = 2,
  20     kTransitionOmniboxTemplateSearch = 3,
  21     kTransitionBookmark = 4,
  22     kTransitionCopyPaste = 5,
  23     kTransitionForwardBackward = 6,
  24     kTransitionRestore = 7,
  25     kTransitionUnknown = 8,
  26     kTransitionTypeLast = 9,
  27   };
  28
  29   virtual ~PageVisitObserver() {}
  30   virtual void OnPageVisit(const GURL& url,
  31                            const TransitionType transition) = 0;
  32 };
  33
  34 }  // namespace sync_driver
  35
  36 #endif  // COMPONENTS_SYNC_DRIVER_REVISIT_PAGE_VISIT_OBSERVERE_H_