chrome/browser/ui/browser_instant_controller.cc

   1 // Copyright 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/browser_instant_controller.h"
   6
   7 #include "base/bind.h"
   8 #include "chrome/browser/infobars/infobar_service.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/browser/search/instant_service.h"
  11 #include "chrome/browser/search/instant_service_factory.h"
  12 #include "chrome/browser/search/search.h"
  13 #include "chrome/browser/ui/browser.h"
  14 #include "chrome/browser/ui/browser_window.h"
  15 #include "chrome/browser/ui/location_bar/location_bar.h"
  16 #include "chrome/browser/ui/omnibox/omnibox_popup_model.h"
  17 #include "chrome/browser/ui/omnibox/omnibox_view.h"
  18 #include "chrome/browser/ui/search/instant_search_prerenderer.h"
  19 #include "chrome/browser/ui/search/search_model.h"
  20 #include "chrome/browser/ui/search/search_tab_helper.h"
  21 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  22 #include "chrome/common/url_constants.h"
  23 #include "content/public/browser/render_process_host.h"
  24 #include "content/public/browser/user_metrics.h"
  25 #include "content/public/browser/web_contents.h"
  26
  27
  28 // Helpers --------------------------------------------------------------------
  29
  30 namespace {
  31
  32 InstantSearchPrerenderer* GetInstantSearchPrerenderer(Profile* profile) {
  33   DCHECK(profile);
  34   InstantService* instant_service =
  35       InstantServiceFactory::GetForProfile(profile);
  36   return instant_service ? instant_service->instant_search_prerenderer() : NULL;
  37 }
  38
  39 }  // namespace
  40
  41
  42 // BrowserInstantController ---------------------------------------------------
  43
  44 BrowserInstantController::BrowserInstantController(Browser* browser)
  45     : browser_(browser),
  46       instant_(this) {
  47   browser_->search_model()->AddObserver(this);
  48
  49   InstantService* instant_service =
  50       InstantServiceFactory::GetForProfile(profile());
  51   instant_service->AddObserver(this);
  52 }
  53
  54 BrowserInstantController::~BrowserInstantController() {
  55   browser_->search_model()->RemoveObserver(this);
  56
  57   InstantService* instant_service =
  58       InstantServiceFactory::GetForProfile(profile());
  59   instant_service->RemoveObserver(this);
  60 }
  61
  62 bool BrowserInstantController::OpenInstant(WindowOpenDisposition disposition,
  63                                            const GURL& url) {
  64   // Unsupported dispositions.
  65   if (disposition == NEW_BACKGROUND_TAB || disposition == NEW_WINDOW ||
  66       disposition == NEW_FOREGROUND_TAB)
  67     return false;
  68
  69   // The omnibox currently doesn't use other dispositions, so we don't attempt
  70   // to handle them. If you hit this DCHECK file a bug and I'll (sky) add
  71   // support for the new disposition.
  72   DCHECK(disposition == CURRENT_TAB) << disposition;
  73
  74   const base::string16& search_terms =
  75       chrome::ExtractSearchTermsFromURL(profile(), url);
  76   if (search_terms.empty())
  77     return false;
  78
  79   InstantSearchPrerenderer* prerenderer =
  80       GetInstantSearchPrerenderer(profile());
  81   if (prerenderer) {
  82     if (prerenderer->CanCommitQuery(GetActiveWebContents(), search_terms)) {
  83       // Submit query to render the prefetched results. Browser will swap the
  84       // prerendered contents with the active tab contents.
  85       prerenderer->Commit(search_terms);
  86       return false;
  87     } else {
  88       prerenderer->Cancel();
  89     }
  90   }
  91
  92   // If we will not be replacing search terms from this URL, don't send to
  93   // InstantController.
  94   if (!chrome::IsQueryExtractionAllowedForURL(profile(), url))
  95     return false;
  96
  97   return instant_.SubmitQuery(search_terms);
  98 }
  99
 100 Profile* BrowserInstantController::profile() const {
 101   return browser_->profile();
 102 }
 103
 104 content::WebContents* BrowserInstantController::GetActiveWebContents() const {
 105   return browser_->tab_strip_model()->GetActiveWebContents();
 106 }
 107
 108 void BrowserInstantController::ActiveTabChanged() {
 109   instant_.ActiveTabChanged();
 110 }
 111
 112 void BrowserInstantController::TabDeactivated(content::WebContents* contents) {
 113   instant_.TabDeactivated(contents);
 114
 115   InstantSearchPrerenderer* prerenderer =
 116       GetInstantSearchPrerenderer(profile());
 117   if (prerenderer)
 118     prerenderer->Cancel();
 119 }
 120
 121 void BrowserInstantController::ModelChanged(
 122     const SearchModel::State& old_state,
 123     const SearchModel::State& new_state) {
 124   if (old_state.mode != new_state.mode) {
 125     const SearchMode& new_mode = new_state.mode;
 126
 127     // Record some actions corresponding to the mode change. Note that to get
 128     // the full story, it's necessary to look at other UMA actions as well,
 129     // such as tab switches.
 130     if (new_mode.is_search_results())
 131       content::RecordAction(base::UserMetricsAction("InstantExtended.ShowSRP"));
 132     else if (new_mode.is_ntp())
 133       content::RecordAction(base::UserMetricsAction("InstantExtended.ShowNTP"));
 134
 135     instant_.SearchModeChanged(old_state.mode, new_mode);
 136   }
 137
 138   if (old_state.instant_support != new_state.instant_support)
 139     instant_.InstantSupportChanged(new_state.instant_support);
 140 }
 141
 142 void BrowserInstantController::DefaultSearchProviderChanged() {
 143   InstantService* instant_service =
 144       InstantServiceFactory::GetForProfile(profile());
 145   if (!instant_service)
 146     return;
 147
 148   TabStripModel* tab_model = browser_->tab_strip_model();
 149   int count = tab_model->count();
 150   for (int index = 0; index < count; ++index) {
 151     content::WebContents* contents = tab_model->GetWebContentsAt(index);
 152     if (!contents)
 153       continue;
 154
 155     // Send new search URLs to the renderer.
 156     content::RenderProcessHost* rph = contents->GetRenderProcessHost();
 157     instant_service->SendSearchURLsToRenderer(rph);
 158
 159     // Reload the contents to ensure that it gets assigned to a non-priviledged
 160     // renderer.
 161     if (!instant_service->IsInstantProcess(rph->GetID()))
 162       continue;
 163
 164     contents->GetController().Reload(false);
 165
 166     // As the reload was not triggered by the user we don't want to close any
 167     // infobars. We have to tell the InfoBarService after the reload, otherwise
 168     // it would ignore this call when
 169     // WebContentsObserver::DidStartNavigationToPendingEntry is invoked.
 170     InfoBarService::FromWebContents(contents)->set_ignore_next_reload();
 171   }
 172 }