chrome/browser/ui/search/search_ipc_router.h

   1 // Copyright 2013 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_IPC_ROUTER_H_
   6 #define CHROME_BROWSER_UI_SEARCH_SEARCH_IPC_ROUTER_H_
   7
   8 #include <vector>
   9
  10 #include "base/gtest_prod_util.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "chrome/common/instant_types.h"
  13 #include "chrome/common/ntp_logging_events.h"
  14 #include "chrome/common/omnibox_focus_state.h"
  15 #include "content/public/browser/web_contents_observer.h"
  16 #include "ui/base/window_open_disposition.h"
  17
  18 class GURL;
  19
  20 namespace content {
  21 class WebContents;
  22 }
  23
  24 class SearchIPCRouterTest;
  25
  26 // SearchIPCRouter is responsible for receiving and sending IPC messages between
  27 // the browser and the Instant page.
  28 class SearchIPCRouter : public content::WebContentsObserver {
  29  public:
  30   // SearchIPCRouter calls its delegate in response to messages received from
  31   // the page.
  32   class Delegate {
  33    public:
  34     // Called upon determination of Instant API support in response to the page
  35     // load event.
  36     virtual void OnInstantSupportDetermined(bool supports_instant) = 0;
  37
  38     // Called upon determination of voice search API support.
  39     virtual void OnSetVoiceSearchSupport(bool supports_voice_search) = 0;
  40
  41     // Called when the page wants the omnibox to be focused. |state| specifies
  42     // the omnibox focus state.
  43     virtual void FocusOmnibox(OmniboxFocusState state) = 0;
  44
  45     // Called when the page wants to navigate to |url|. Usually used by the
  46     // page to navigate to privileged destinations (e.g. chrome:// URLs) or to
  47     // navigate to URLs that are hidden from the page using Restricted IDs (rid
  48     // in the API).
  49     virtual void NavigateToURL(const GURL& url,
  50                                WindowOpenDisposition disposition,
  51                                bool is_most_visited_item_url) = 0;
  52
  53     // Called when the SearchBox wants to delete a Most Visited item.
  54     virtual void OnDeleteMostVisitedItem(const GURL& url) = 0;
  55
  56     // Called when the SearchBox wants to undo a Most Visited deletion.
  57     virtual void OnUndoMostVisitedDeletion(const GURL& url) = 0;
  58
  59     // Called when the SearchBox wants to undo all Most Visited deletions.
  60     virtual void OnUndoAllMostVisitedDeletions() = 0;
  61
  62     // Called to signal that an event has occurred on the New Tab Page.
  63     virtual void OnLogEvent(NTPLoggingEventType event) = 0;
  64
  65     // Called to log an impression from a given provider on the New Tab Page.
  66     virtual void OnLogImpression(int position,
  67                                  const base::string16& provider) = 0;
  68
  69     // Called when the page wants to paste the |text| (or the clipboard contents
  70     // if the |text| is empty) into the omnibox.
  71     virtual void PasteIntoOmnibox(const base::string16& text) = 0;
  72
  73     // Called when the SearchBox wants to verify the signed-in Chrome identity
  74     // against the provided |identity|. Will make a round-trip to the browser
  75     // and eventually return the result through SendChromeIdentityCheckResult.
  76     virtual void OnChromeIdentityCheck(const base::string16& identity) = 0;
  77   };
  78
  79   // An interface to be implemented by consumers of SearchIPCRouter objects to
  80   // decide whether to process the message received from the page, and vice
  81   // versa (decide whether to send messages to the page).
  82   class Policy {
  83    public:
  84     virtual ~Policy() {}
  85
  86     // SearchIPCRouter calls these functions before sending/receiving messages
  87     // to/from the page.
  88     virtual bool ShouldProcessSetVoiceSearchSupport() = 0;
  89     virtual bool ShouldProcessFocusOmnibox(bool is_active_tab) = 0;
  90     virtual bool ShouldProcessNavigateToURL(bool is_active_tab) = 0;
  91     virtual bool ShouldProcessDeleteMostVisitedItem() = 0;
  92     virtual bool ShouldProcessUndoMostVisitedDeletion() = 0;
  93     virtual bool ShouldProcessUndoAllMostVisitedDeletions() = 0;
  94     virtual bool ShouldProcessLogEvent() = 0;
  95     virtual bool ShouldProcessPasteIntoOmnibox(bool is_active_tab) = 0;
  96     virtual bool ShouldProcessChromeIdentityCheck() = 0;
  97     virtual bool ShouldSendSetPromoInformation() = 0;
  98     virtual bool ShouldSendSetDisplayInstantResults() = 0;
  99     virtual bool ShouldSendSetSuggestionToPrefetch() = 0;
 100     virtual bool ShouldSendMostVisitedItems() = 0;
 101     virtual bool ShouldSendThemeBackgroundInfo() = 0;
 102     virtual bool ShouldSendToggleVoiceSearch() = 0;
 103     virtual bool ShouldSubmitQuery() = 0;
 104   };
 105
 106   SearchIPCRouter(content::WebContents* web_contents, Delegate* delegate,
 107                   scoped_ptr<Policy> policy);
 108   virtual ~SearchIPCRouter();
 109
 110   // Tells the renderer to determine if the page supports the Instant API, which
 111   // results in a call to OnInstantSupportDetermined() when the reply is
 112   // received.
 113   void DetermineIfPageSupportsInstant();
 114
 115   // Tells the renderer about the result of the Chrome identity check.
 116   void SendChromeIdentityCheckResult(const base::string16& identity,
 117                                      bool identity_match);
 118
 119   // Tells the renderer information it needs to display promos.
 120   void SetPromoInformation(bool is_app_launcher_enabled);
 121
 122   // Tells the renderer whether to display the Instant results.
 123   void SetDisplayInstantResults();
 124
 125   // Tells the page the suggestion to be prefetched if any.
 126   void SetSuggestionToPrefetch(const InstantSuggestion& suggestion);
 127
 128   // Tells the renderer about the most visited items.
 129   void SendMostVisitedItems(const std::vector<InstantMostVisitedItem>& items);
 130
 131   // Tells the renderer about the current theme background.
 132   void SendThemeBackgroundInfo(const ThemeBackgroundInfo& theme_info);
 133
 134   // Tells the page to toggle voice search.
 135   void ToggleVoiceSearch();
 136
 137   // Tells the page that the user pressed Enter in the omnibox.
 138   void Submit(const base::string16& text);
 139
 140   // Called when the tab corresponding to |this| instance is activated.
 141   void OnTabActivated();
 142
 143   // Called when the tab corresponding to |this| instance is deactivated.
 144   void OnTabDeactivated();
 145
 146  private:
 147   friend class SearchIPCRouterPolicyTest;
 148   friend class SearchIPCRouterTest;
 149   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 150                            DetermineIfPageSupportsInstant_Local);
 151   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 152                            DetermineIfPageSupportsInstant_NonLocal);
 153   FRIEND_TEST_ALL_PREFIXES(SearchTabHelperTest,
 154                            PageURLDoesntBelongToInstantRenderer);
 155   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest,
 156                            IgnoreMessageIfThePageIsNotActive);
 157   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest,
 158                            DoNotSendSetDisplayInstantResultsMsg);
 159   FRIEND_TEST_ALL_PREFIXES(SearchIPCRouterTest, HandleTabChangedEvents);
 160
 161   // Overridden from contents::WebContentsObserver:
 162   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 163
 164   void OnInstantSupportDetermined(int page_id, bool supports_instant) const;
 165   void OnVoiceSearchSupportDetermined(int page_id,
 166                                       bool supports_voice_search) const;
 167   void OnFocusOmnibox(int page_id, OmniboxFocusState state) const;
 168   void OnSearchBoxNavigate(int page_id,
 169                            const GURL& url,
 170                            WindowOpenDisposition disposition,
 171                            bool is_most_visited_item_url) const;
 172   void OnDeleteMostVisitedItem(int page_id, const GURL& url) const;
 173   void OnUndoMostVisitedDeletion(int page_id, const GURL& url) const;
 174   void OnUndoAllMostVisitedDeletions(int page_id) const;
 175   void OnLogEvent(int page_id, NTPLoggingEventType event) const;
 176   void OnLogImpression(int page_id,
 177                        int position,
 178                        const base::string16& provider) const;
 179   void OnPasteAndOpenDropDown(int page_id, const base::string16& text) const;
 180   void OnChromeIdentityCheck(int page_id, const base::string16& identity) const;
 181
 182   // Used by unit tests to set a fake delegate.
 183   void set_delegate(Delegate* delegate);
 184
 185   // Used by unit tests.
 186   void set_policy(scoped_ptr<Policy> policy);
 187
 188   // Used by unit tests.
 189   Policy* policy() const { return policy_.get(); }
 190
 191   Delegate* delegate_;
 192   scoped_ptr<Policy> policy_;
 193
 194   // Set to true, when the tab corresponding to |this| instance is active.
 195   bool is_active_tab_;
 196
 197   DISALLOW_COPY_AND_ASSIGN(SearchIPCRouter);
 198 };
 199
 200 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_IPC_ROUTER_H_