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/extensions/extension_service.h"
   9 #include "chrome/browser/extensions/extension_web_ui.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/browser/search/instant_service.h"
  12 #include "chrome/browser/search/instant_service_factory.h"
  13 #include "chrome/browser/search/search.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/browser_window.h"
  16 #include "chrome/browser/ui/omnibox/location_bar.h"
  17 #include "chrome/browser/ui/omnibox/omnibox_popup_model.h"
  18 #include "chrome/browser/ui/omnibox/omnibox_view.h"
  19 #include "chrome/browser/ui/search/instant_search_prerenderer.h"
  20 #include "chrome/browser/ui/search/search_model.h"
  21 #include "chrome/browser/ui/search/search_tab_helper.h"
  22 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  23 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
  24 #include "chrome/common/url_constants.h"
  25 #include "content/public/browser/render_process_host.h"
  26 #include "content/public/browser/user_metrics.h"
  27 #include "content/public/browser/web_contents.h"
  28 #include "content/public/browser/web_contents_view.h"
  29
  30 using base::UserMetricsAction;
  31
  32 namespace {
  33
  34 InstantSearchPrerenderer* GetInstantSearchPrerenderer(Profile* profile) {
  35   DCHECK(profile);
  36   InstantService* instant_service =
  37       InstantServiceFactory::GetForProfile(profile);
  38   return instant_service ? instant_service->instant_search_prerenderer() : NULL;
  39 }
  40
  41 }  // namespace
  42
  43 ////////////////////////////////////////////////////////////////////////////////
  44 // BrowserInstantController, public:
  45
  46 BrowserInstantController::BrowserInstantController(Browser* browser)
  47     : browser_(browser),
  48       instant_(this) {
  49   browser_->search_model()->AddObserver(this);
  50
  51   InstantService* instant_service =
  52       InstantServiceFactory::GetForProfile(profile());
  53   instant_service->AddObserver(this);
  54 }
  55
  56 BrowserInstantController::~BrowserInstantController() {
  57   browser_->search_model()->RemoveObserver(this);
  58
  59   InstantService* instant_service =
  60       InstantServiceFactory::GetForProfile(profile());
  61   instant_service->RemoveObserver(this);
  62 }
  63
  64 bool BrowserInstantController::OpenInstant(WindowOpenDisposition disposition,
  65                                            const GURL& url) {
  66   // Unsupported dispositions.
  67   if (disposition == NEW_BACKGROUND_TAB || disposition == NEW_WINDOW ||
  68       disposition == NEW_FOREGROUND_TAB)
  69     return false;
  70
  71   // The omnibox currently doesn't use other dispositions, so we don't attempt
  72   // to handle them. If you hit this DCHECK file a bug and I'll (sky) add
  73   // support for the new disposition.
  74   DCHECK(disposition == CURRENT_TAB) << disposition;
  75
  76   // If we will not be replacing search terms from this URL, don't send to
  77   // InstantController.
  78   const base::string16& search_terms =
  79       chrome::GetSearchTermsFromURL(browser_->profile(), url);
  80   if (search_terms.empty())
  81     return false;
  82
  83   InstantSearchPrerenderer* prerenderer =
  84       GetInstantSearchPrerenderer(profile());
  85   if (prerenderer &&
  86       prerenderer->CanCommitQuery(GetActiveWebContents(), search_terms)) {
  87     // Submit query to render the prefetched results. Browser will swap the
  88     // prerendered contents with the active tab contents.
  89     prerenderer->Commit(search_terms);
  90     return false;
  91   }
  92
  93   return instant_.SubmitQuery(search_terms);
  94 }
  95
  96 Profile* BrowserInstantController::profile() const {
  97   return browser_->profile();
  98 }
  99
 100 content::WebContents* BrowserInstantController::GetActiveWebContents() const {
 101   return browser_->tab_strip_model()->GetActiveWebContents();
 102 }
 103
 104 void BrowserInstantController::ActiveTabChanged() {
 105   instant_.ActiveTabChanged();
 106 }
 107
 108 void BrowserInstantController::TabDeactivated(content::WebContents* contents) {
 109   instant_.TabDeactivated(contents);
 110
 111   InstantSearchPrerenderer* prerenderer =
 112       GetInstantSearchPrerenderer(profile());
 113   if (prerenderer)
 114     prerenderer->Cancel();
 115 }
 116
 117 void BrowserInstantController::SetOmniboxBounds(const gfx::Rect& bounds) {
 118   instant_.SetOmniboxBounds(bounds);
 119 }
 120
 121 ////////////////////////////////////////////////////////////////////////////////
 122 // BrowserInstantController, SearchModelObserver implementation:
 123
 124 void BrowserInstantController::ModelChanged(
 125     const SearchModel::State& old_state,
 126     const SearchModel::State& new_state) {
 127   if (old_state.mode != new_state.mode) {
 128     const SearchMode& new_mode = new_state.mode;
 129
 130     // Record some actions corresponding to the mode change. Note that to get
 131     // the full story, it's necessary to look at other UMA actions as well,
 132     // such as tab switches.
 133     if (new_mode.is_search_results())
 134       content::RecordAction(UserMetricsAction("InstantExtended.ShowSRP"));
 135     else if (new_mode.is_ntp())
 136       content::RecordAction(UserMetricsAction("InstantExtended.ShowNTP"));
 137
 138     instant_.SearchModeChanged(old_state.mode, new_mode);
 139   }
 140
 141   if (old_state.instant_support != new_state.instant_support)
 142     instant_.InstantSupportChanged(new_state.instant_support);
 143 }
 144
 145 ////////////////////////////////////////////////////////////////////////////////
 146 // BrowserInstantController, InstantServiceObserver implementation:
 147
 148 void BrowserInstantController::DefaultSearchProviderChanged() {
 149   ReloadTabsInInstantProcess();
 150 }
 151
 152 void BrowserInstantController::GoogleURLUpdated() {
 153   ReloadTabsInInstantProcess();
 154 }
 155
 156 void BrowserInstantController::ReloadTabsInInstantProcess() {
 157   InstantService* instant_service =
 158       InstantServiceFactory::GetForProfile(profile());
 159   if (!instant_service)
 160     return;
 161
 162   TabStripModel* tab_model = browser_->tab_strip_model();
 163   int count = tab_model->count();
 164   for (int index = 0; index < count; ++index) {
 165     content::WebContents* contents = tab_model->GetWebContentsAt(index);
 166     if (!contents)
 167       continue;
 168
 169     // Send new search URLs to the renderer.
 170     content::RenderProcessHost* rph = contents->GetRenderProcessHost();
 171     instant_service->SendSearchURLsToRenderer(rph);
 172
 173     // Reload the contents to ensure that it gets assigned to a non-priviledged
 174     // renderer.
 175     if (!instant_service->IsInstantProcess(rph->GetID()))
 176       continue;
 177     contents->GetController().Reload(false);
 178   }
 179 }