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| 1 // Copyright (c) 2012 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_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_ | |
| 6 #define CHROME_BROWSER_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_ | |
| 7 | |
| 8 #include "base/prefs/pref_change_registrar.h" | |
| 9 #include "content/public/browser/notification_observer.h" | |
| 10 #include "content/public/browser/notification_registrar.h" | |
| 11 #include "content/public/browser/web_contents_observer.h" | |
| 12 #include "content/public/browser/web_contents_user_data.h" | |
| 13 | |
| 14 class Profile; | |
| 15 | |
| 16 namespace user_prefs { | |
| 17 class PrefRegistrySyncable; | |
| 18 } | |
| 19 | |
| 20 // Per-tab class to implement alternate error page functionality. | |
| 21 class AlternateErrorPageTabObserver | |
| 22 : public content::WebContentsObserver, | |
| 23 public content::NotificationObserver, | |
| 24 public content::WebContentsUserData<AlternateErrorPageTabObserver> { | |
| 25 public: | |
| 26 virtual ~AlternateErrorPageTabObserver(); | |
| 27 | |
| 28 static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); | |
| 29 | |
| 30 private: | |
| 31 explicit AlternateErrorPageTabObserver(content::WebContents* web_contents); | |
| 32 friend class content::WebContentsUserData<AlternateErrorPageTabObserver>; | |
| 33 | |
| 34 // content::WebContentsObserver overrides: | |
| 35 virtual void RenderViewCreated( | |
| 36 content::RenderViewHost* render_view_host) OVERRIDE; | |
| 37 | |
| 38 // content::NotificationObserver overrides: | |
| 39 virtual void Observe(int type, | |
| 40 const content::NotificationSource& source, | |
| 41 const content::NotificationDetails& details) OVERRIDE; | |
| 42 | |
| 43 // Internal helpers ---------------------------------------------------------- | |
| 44 | |
| 45 // Returns the server that can provide alternate error pages. If the returned | |
| 46 // URL is empty, the default error page built into WebKit will be used. | |
| 47 GURL GetAlternateErrorPageURL() const; | |
| 48 | |
| 49 void OnAlternateErrorPagesEnabledChanged(); | |
| 50 | |
| 51 // Send the alternate error page URL to the renderer. | |
| 52 void UpdateAlternateErrorPageURL(content::RenderViewHost* rvh); | |
| 53 | |
| 54 Profile* profile_; | |
| 55 content::NotificationRegistrar registrar_; | |
| 56 PrefChangeRegistrar pref_change_registrar_; | |
| 57 | |
| 58 DISALLOW_COPY_AND_ASSIGN(AlternateErrorPageTabObserver); | |
| 59 }; | |
| 60 | |
| 61 #endif // CHROME_BROWSER_UI_ALTERNATE_ERROR_TAB_OBSERVER_H_ | |
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Chromium Code Reviews
Issue 235883010:
Revert 262846, as the revert has now been merged to M35. (Closed)
Base URL: svn://svn.chromium.org/chrome/