chrome/browser/ui/navigation_correction_tab_observer.cc

   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 #include "chrome/browser/ui/navigation_correction_tab_observer.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/browser/browser_process.h"
   9 #include "chrome/browser/chrome_notification_types.h"
  10 #include "chrome/browser/google/google_profile_helper.h"
  11 #include "chrome/browser/google/google_url_tracker_factory.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "chrome/common/pref_names.h"
  14 #include "chrome/common/render_messages.h"
  15 #include "components/google/core/browser/google_util.h"
  16 #include "components/pref_registry/pref_registry_syncable.h"
  17 #include "content/public/browser/render_frame_host.h"
  18 #include "content/public/browser/render_view_host.h"
  19 #include "content/public/browser/web_contents.h"
  20 #include "google_apis/google_api_keys.h"
  21
  22 using content::RenderFrameHost;
  23 using content::RenderViewHost;
  24 using content::WebContents;
  25
  26 DEFINE_WEB_CONTENTS_USER_DATA_KEY(NavigationCorrectionTabObserver);
  27
  28 NavigationCorrectionTabObserver::NavigationCorrectionTabObserver(
  29     WebContents* web_contents)
  30     : content::WebContentsObserver(web_contents),
  31       profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) {
  32   PrefService* prefs = profile_->GetPrefs();
  33   if (prefs) {
  34     pref_change_registrar_.Init(prefs);
  35     pref_change_registrar_.Add(
  36         prefs::kAlternateErrorPagesEnabled,
  37         base::Bind(&NavigationCorrectionTabObserver::OnEnabledChanged,
  38                    base::Unretained(this)));
  39   }
  40
  41   GoogleURLTracker* google_url_tracker =
  42       GoogleURLTrackerFactory::GetForProfile(profile_);
  43   if (google_url_tracker) {
  44     google_url_updated_subscription_ = google_url_tracker->RegisterCallback(
  45         base::Bind(&NavigationCorrectionTabObserver::OnGoogleURLUpdated,
  46                    base::Unretained(this)));
  47   }
  48 }
  49
  50 NavigationCorrectionTabObserver::~NavigationCorrectionTabObserver() {
  51 }
  52
  53 // static
  54 void NavigationCorrectionTabObserver::RegisterProfilePrefs(
  55     user_prefs::PrefRegistrySyncable* prefs) {
  56   prefs->RegisterBooleanPref(prefs::kAlternateErrorPagesEnabled,
  57                              true,
  58                              user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
  59 }
  60
  61 ////////////////////////////////////////////////////////////////////////////////
  62 // WebContentsObserver overrides
  63
  64 void NavigationCorrectionTabObserver::RenderViewCreated(
  65     RenderViewHost* render_view_host) {
  66   UpdateNavigationCorrectionInfo(render_view_host);
  67 }
  68
  69 ////////////////////////////////////////////////////////////////////////////////
  70 // Internal helpers
  71
  72 void NavigationCorrectionTabObserver::OnGoogleURLUpdated() {
  73   UpdateNavigationCorrectionInfo(web_contents()->GetRenderViewHost());
  74 }
  75
  76 GURL NavigationCorrectionTabObserver::GetNavigationCorrectionURL() const {
  77   // Disable navigation corrections when the preference is disabled or when in
  78   // Incognito mode.
  79   if (!profile_->GetPrefs()->GetBoolean(prefs::kAlternateErrorPagesEnabled) ||
  80       profile_->IsOffTheRecord()) {
  81     return GURL();
  82   }
  83
  84   return google_util::LinkDoctorBaseURL();
  85 }
  86
  87 void NavigationCorrectionTabObserver::OnEnabledChanged() {
  88   UpdateNavigationCorrectionInfo(web_contents()->GetRenderViewHost());
  89 }
  90
  91 void NavigationCorrectionTabObserver::UpdateNavigationCorrectionInfo(
  92     RenderViewHost* rvh) {
  93   RenderFrameHost* rfh = rvh->GetMainFrame();
  94   rfh->Send(new ChromeViewMsg_SetNavigationCorrectionInfo(
  95       rfh->GetRoutingID(),
  96       GetNavigationCorrectionURL(),
  97       google_util::GetGoogleLocale(g_browser_process->GetApplicationLocale()),
  98       google_util::GetGoogleCountryCode(
  99           google_profile_helper::GetGoogleHomePageURL(profile_)),
 100       google_apis::GetAPIKey(),
 101       google_util::GetGoogleSearchURL(
 102           google_profile_helper::GetGoogleHomePageURL(profile_))));
 103 }