chrome/browser/ui/search/search_tab_helper.h

   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 #ifndef CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
   6 #define CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/gtest_prod_util.h"
  13 #include "chrome/browser/search/instant_service_observer.h"
  14 #include "chrome/browser/ui/search/search_ipc_router.h"
  15 #include "chrome/browser/ui/search/search_model.h"
  16 #include "chrome/common/instant_types.h"
  17 #include "chrome/common/ntp_logging_events.h"
  18 #include "content/public/browser/web_contents_observer.h"
  19 #include "content/public/browser/web_contents_user_data.h"
  20 #include "ui/base/window_open_disposition.h"
  21
  22 namespace content {
  23 class WebContents;
  24 struct LoadCommittedDetails;
  25 }
  26
  27 class GURL;
  28 class InstantPageTest;
  29 class InstantService;
  30 class Profile;
  31 class SearchIPCRouterTest;
  32
  33 // Per-tab search "helper".  Acts as the owner and controller of the tab's
  34 // search UI model.
  35 //
  36 // When the page is finished loading, SearchTabHelper determines the instant
  37 // support for the page. When a navigation entry is committed (except for
  38 // in-page navigations), SearchTabHelper resets the instant support state to
  39 // INSTANT_SUPPORT_UNKNOWN and cause support to be determined again.
  40 class SearchTabHelper : public content::WebContentsObserver,
  41                         public content::WebContentsUserData<SearchTabHelper>,
  42                         public InstantServiceObserver,
  43                         public SearchIPCRouter::Delegate {
  44  public:
  45   virtual ~SearchTabHelper();
  46
  47   SearchModel* model() {
  48     return &model_;
  49   }
  50
  51   // Sets up the initial state correctly for a preloaded NTP.
  52   void InitForPreloadedNTP();
  53
  54   // Invoked when the OmniboxEditModel changes state in some way that might
  55   // affect the search mode.
  56   void OmniboxEditModelChanged(bool user_input_in_progress, bool cancelling);
  57
  58   // Invoked when the active navigation entry is updated in some way that might
  59   // affect the search mode. This is used by Instant when it "fixes up" the
  60   // virtual URL of the active entry. Regular navigations are captured through
  61   // the notification system and shouldn't call this method.
  62   void NavigationEntryUpdated();
  63
  64   // Invoked to update the instant support state.
  65   void InstantSupportChanged(bool supports_instant);
  66
  67   // Returns true if the page supports instant. If the instant support state is
  68   // not determined or if the page does not support instant returns false.
  69   bool SupportsInstant() const;
  70
  71   // Sends the current SearchProvider suggestion to the Instant page if any.
  72   void SetSuggestionToPrefetch(const InstantSuggestion& suggestion);
  73
  74   // Tells the page that the user pressed Enter in the omnibox.
  75   void Submit(const base::string16& text);
  76
  77   // Called when the tab corresponding to |this| instance is activated.
  78   void OnTabActivated();
  79
  80   // Called when the tab corresponding to |this| instance is deactivated.
  81   void OnTabDeactivated();
  82
  83   // Tells the page to toggle voice search.
  84   void ToggleVoiceSearch();
  85
  86   // Returns true if the underlying page is a search results page.
  87   bool IsSearchResultsPage();
  88
  89  private:
  90   friend class content::WebContentsUserData<SearchTabHelper>;
  91   friend class InstantPageTest;
  92   friend class SearchIPCRouterPolicyTest;
  93   friend class SearchIPCRouterTest;
  94   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
  95                            DetermineIfPageSupportsInstant_Local);
  96   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
  97                            DetermineIfPageSupportsInstant_NonLocal);
  98   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
  99                            PageURLDoesntBelongToInstantRenderer);
 100   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 101                            OnChromeIdentityCheckMatch);
 102   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 103                            OnChromeIdentityCheckMismatch);
 104   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 105                            OnChromeIdentityCheckSignedOutMatch);
 106   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 107                            OnChromeIdentityCheckSignedOutMismatch);
 108   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperWindowTest,
 109                            OnProvisionalLoadFailRedirectNTPToLocal);
 110   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperWindowTest,
 111                            OnProvisionalLoadFailDontRedirectIfAborted);
 112   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperWindowTest,
 113                            OnProvisionalLoadFailDontRedirectNonNTP);
 114   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest,
 115                            IgnoreMessageIfThePageIsNotActive);
 116   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest,
 117                            DoNotSendSetDisplayInstantResultsMsg);
 118   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest, HandleTabChangedEvents);
 119   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
 120                            DetermineIfPageSupportsInstant_Local);
 121   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
 122                            DetermineIfPageSupportsInstant_NonLocal);
 123   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
 124                            PageURLDoesntBelongToInstantRenderer);
 125   FRIEND_TEST_ALL_PREFIXES(InstantPageTest, PageSupportsInstant);
 126
 127   explicit SearchTabHelper(content::WebContents* web_contents);
 128
 129   // Overridden from contents::WebContentsObserver:
 130   virtual void RenderViewCreated(
 131       content::RenderViewHost* render_view_host) OVERRIDE;
 132   virtual void DidStartNavigationToPendingEntry(
 133       const GURL& url,
 134       content::NavigationController::ReloadType reload_type) OVERRIDE;
 135   virtual void DidNavigateMainFrame(
 136       const content::LoadCommittedDetails& details,
 137       const content::FrameNavigateParams& params) OVERRIDE;
 138   virtual void DidFailProvisionalLoad(
 139       int64 frame_id,
 140       const base::string16& frame_unique_name,
 141       bool is_main_frame,
 142       const GURL& validated_url,
 143       int error_code,
 144       const base::string16& error_description,
 145       content::RenderViewHost* render_view_host) OVERRIDE;
 146   virtual void DidFinishLoad(
 147       int64 frame_id,
 148       const GURL& validated_url,
 149       bool is_main_frame,
 150       content::RenderViewHost* render_view_host) OVERRIDE;
 151   virtual void NavigationEntryCommitted(
 152       const content::LoadCommittedDetails& load_details) OVERRIDE;
 153
 154   // Overridden from SearchIPCRouter::Delegate:
 155   virtual void OnInstantSupportDetermined(bool supports_instant) OVERRIDE;
 156   virtual void OnSetVoiceSearchSupport(bool supports_voice_search) OVERRIDE;
 157   virtual void FocusOmnibox(OmniboxFocusState state) OVERRIDE;
 158   virtual void NavigateToURL(const GURL& url,
 159                              WindowOpenDisposition disposition,
 160                              bool is_most_visited_item_url) OVERRIDE;
 161   virtual void OnDeleteMostVisitedItem(const GURL& url) OVERRIDE;
 162   virtual void OnUndoMostVisitedDeletion(const GURL& url) OVERRIDE;
 163   virtual void OnUndoAllMostVisitedDeletions() OVERRIDE;
 164   virtual void OnLogEvent(NTPLoggingEventType event) OVERRIDE;
 165   virtual void OnLogImpression(int position,
 166                                const base::string16& provider) OVERRIDE;
 167   virtual void PasteIntoOmnibox(const base::string16& text) OVERRIDE;
 168   virtual void OnChromeIdentityCheck(const base::string16& identity) OVERRIDE;
 169
 170   // Overridden from InstantServiceObserver:
 171   virtual void ThemeInfoChanged(const ThemeBackgroundInfo& theme_info) OVERRIDE;
 172   virtual void MostVisitedItemsChanged(
 173       const std::vector<InstantMostVisitedItem>& items) OVERRIDE;
 174   virtual void OmniboxStartMarginChanged(int omnibox_start_margin) OVERRIDE;
 175
 176   // Removes recommended URLs if a matching URL is already open in the Browser,
 177   // if the Most Visited Tile Placement experiment is enabled, and the client is
 178   // in the experiment group.
 179   void MaybeRemoveMostVisitedItems(std::vector<InstantMostVisitedItem>* items);
 180
 181   // Sets the mode of the model based on the current URL of web_contents().
 182   // Only updates the origin part of the mode if |update_origin| is true,
 183   // otherwise keeps the current origin. If |is_preloaded_ntp| is true, the mode
 184   // is set to NTP regardless of the current URL; this is used to ensure that
 185   // InstantController can bind InstantTab to new tab pages immediately.
 186   void UpdateMode(bool update_origin, bool is_preloaded_ntp);
 187
 188   // Tells the renderer to determine if the page supports the Instant API, which
 189   // results in a call to OnInstantSupportDetermined() when the reply is
 190   // received.
 191   void DetermineIfPageSupportsInstant();
 192
 193   // Used by unit tests.
 194   SearchIPCRouter& ipc_router() { return ipc_router_; }
 195
 196   Profile* profile() const;
 197
 198   // Helper function to navigate the given contents to the local fallback
 199   // Instant URL and trim the history correctly.
 200   void RedirectToLocalNTP();
 201
 202   const bool is_search_enabled_;
 203
 204   // Tracks the last value passed to OmniboxEditModelChanged().
 205   bool user_input_in_progress_;
 206
 207   // Model object for UI that cares about search state.
 208   SearchModel model_;
 209
 210   content::WebContents* web_contents_;
 211
 212   SearchIPCRouter ipc_router_;
 213
 214   InstantService* instant_service_;
 215
 216   DISALLOW_COPY_AND_ASSIGN(SearchTabHelper);
 217 };
 218
 219 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_