| // Copyright (c) 2012 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. |
| |
| #ifndef CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_ |
| #define CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_ |
| |
| #include "base/prefs/pref_change_registrar.h" |
| #include "components/google/core/browser/google_url_tracker.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| |
| class Profile; |
| |
| namespace user_prefs { |
| class PrefRegistrySyncable; |
| } |
| |
| // Per-tab class to implement navigation suggestion service functionality. |
| class NavigationCorrectionTabObserver |
| : public content::WebContentsObserver, |
| public content::WebContentsUserData<NavigationCorrectionTabObserver> { |
| public: |
| ~NavigationCorrectionTabObserver() override; |
| |
| static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); |
| |
| private: |
| explicit NavigationCorrectionTabObserver(content::WebContents* web_contents); |
| friend class content::WebContentsUserData<NavigationCorrectionTabObserver>; |
| |
| // content::WebContentsObserver overrides: |
| void RenderViewCreated(content::RenderViewHost* render_view_host) override; |
| |
| // Internal helpers ---------------------------------------------------------- |
| |
| // Callback that is called when the Google URL is updated. |
| void OnGoogleURLUpdated(); |
| |
| // Returns the URL for the correction service. If the returned URL |
| // is empty, the default error pages will be used. |
| GURL GetNavigationCorrectionURL() const; |
| |
| // Called when navigation corrections are enabled or disabled. |
| void OnEnabledChanged(); |
| |
| // Updates the renderer's navigation correction service configuration. |
| void UpdateNavigationCorrectionInfo(content::RenderViewHost* rvh); |
| |
| Profile* profile_; |
| PrefChangeRegistrar pref_change_registrar_; |
| scoped_ptr<GoogleURLTracker::Subscription> google_url_updated_subscription_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NavigationCorrectionTabObserver); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_NAVIGATION_CORRECTION_TAB_OBSERVER_H_ |