| // 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. |
| |
| #include "chrome/browser/ui/alternate_error_tab_observer.h" |
| |
| #include "base/prefs/pref_service.h" |
| #include "chrome/browser/chrome_notification_types.h" |
| #include "chrome/browser/google/google_util.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/common/pref_names.h" |
| #include "components/user_prefs/pref_registry_syncable.h" |
| #include "content/public/browser/notification_service.h" |
| #include "content/public/browser/render_view_host.h" |
| #include "content/public/browser/web_contents.h" |
| |
| using content::RenderViewHost; |
| using content::WebContents; |
| |
| DEFINE_WEB_CONTENTS_USER_DATA_KEY(AlternateErrorPageTabObserver); |
| |
| AlternateErrorPageTabObserver::AlternateErrorPageTabObserver( |
| WebContents* web_contents) |
| : content::WebContentsObserver(web_contents), |
| profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) { |
| PrefService* prefs = profile_->GetPrefs(); |
| if (prefs) { |
| pref_change_registrar_.Init(prefs); |
| pref_change_registrar_.Add( |
| prefs::kAlternateErrorPagesEnabled, |
| base::Bind(&AlternateErrorPageTabObserver:: |
| OnAlternateErrorPagesEnabledChanged, |
| base::Unretained(this))); |
| } |
| |
| registrar_.Add(this, chrome::NOTIFICATION_GOOGLE_URL_UPDATED, |
| content::Source<Profile>(profile_->GetOriginalProfile())); |
| } |
| |
| AlternateErrorPageTabObserver::~AlternateErrorPageTabObserver() { |
| } |
| |
| // static |
| void AlternateErrorPageTabObserver::RegisterProfilePrefs( |
| user_prefs::PrefRegistrySyncable* prefs) { |
| prefs->RegisterBooleanPref(prefs::kAlternateErrorPagesEnabled, |
| true, |
| user_prefs::PrefRegistrySyncable::SYNCABLE_PREF); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // WebContentsObserver overrides |
| |
| void AlternateErrorPageTabObserver::RenderViewCreated( |
| RenderViewHost* render_view_host) { |
| UpdateAlternateErrorPageURL(render_view_host); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // content::NotificationObserver overrides |
| |
| void AlternateErrorPageTabObserver::Observe( |
| int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) { |
| DCHECK_EQ(chrome::NOTIFICATION_GOOGLE_URL_UPDATED, type); |
| UpdateAlternateErrorPageURL(web_contents()->GetRenderViewHost()); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Internal helpers |
| |
| GURL AlternateErrorPageTabObserver::GetAlternateErrorPageURL() const { |
| GURL url; |
| // Disable alternate error pages when in Incognito mode. |
| if (profile_->IsOffTheRecord()) |
| return url; |
| |
| if (profile_->GetPrefs()->GetBoolean(prefs::kAlternateErrorPagesEnabled)) { |
| url = google_util::LinkDoctorBaseURL(); |
| if (!url.is_valid()) |
| return url; |
| url = google_util::AppendGoogleLocaleParam(url); |
| url = google_util::AppendGoogleTLDParam(profile_, url); |
| } |
| return url; |
| } |
| |
| void AlternateErrorPageTabObserver::OnAlternateErrorPagesEnabledChanged() { |
| UpdateAlternateErrorPageURL(web_contents()->GetRenderViewHost()); |
| } |
| |
| void AlternateErrorPageTabObserver::UpdateAlternateErrorPageURL( |
| RenderViewHost* rvh) { |
| rvh->SetAltErrorPageURL(GetAlternateErrorPageURL()); |
| } |