chrome/browser/ui/webui/omnibox/omnibox_ui_handler.h

   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 #ifndef CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_UI_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_UI_HANDLER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/time/time.h"
  12 #include "chrome/browser/autocomplete/autocomplete_controller_delegate.h"
  13 #include "chrome/browser/ui/webui/mojo_web_ui_handler.h"
  14 #include "chrome/browser/ui/webui/omnibox/omnibox.mojom.h"
  15 #include "components/omnibox/autocomplete_input.h"
  16 #include "components/omnibox/autocomplete_match.h"
  17
  18 class AutocompleteController;
  19 class Profile;
  20
  21 // Implementation of OmniboxUIHandlerMojo.  StartOmniboxQuery() calls to a
  22 // private AutocompleteController. It also listens for updates from the
  23 // AutocompleteController to OnResultChanged() and passes those results to
  24 // the OmniboxPage.
  25 class OmniboxUIHandler : public AutocompleteControllerDelegate,
  26                          public mojo::InterfaceImpl<OmniboxUIHandlerMojo>,
  27                          public MojoWebUIHandler {
  28  public:
  29   explicit OmniboxUIHandler(Profile* profile);
  30   ~OmniboxUIHandler() override;
  31
  32   // AutocompleteControllerDelegate overrides:
  33   void OnResultChanged(bool default_match_changed) override;
  34
  35   // ErrorHandler overrides:
  36   void OnConnectionError() override {
  37     // TODO(darin): How should we handle connection error?
  38   }
  39
  40   // OmniboxUIHandlerMojo overrides:
  41   void StartOmniboxQuery(const mojo::String& input_string,
  42                          int32_t cursor_position,
  43                          bool prevent_inline_autocomplete,
  44                          bool prefer_keyword,
  45                          int32_t page_classification,
  46                          OmniboxPagePtr page) override;
  47
  48  private:
  49   // Looks up whether the hostname is a typed host (i.e., has received
  50   // typed visits).  Return true if the lookup succeeded; if so, the
  51   // value of |is_typed_host| is set appropriately.
  52   bool LookupIsTypedHost(const base::string16& host, bool* is_typed_host) const;
  53
  54   // Re-initializes the AutocompleteController in preparation for the
  55   // next query.
  56   void ResetController();
  57
  58   // The omnibox AutocompleteController that collects/sorts/dup-
  59   // eliminates the results as they come in.
  60   scoped_ptr<AutocompleteController> controller_;
  61
  62   // Time the user's input was sent to the omnibox to start searching.
  63   // Needed because we also pass timing information in the object we
  64   // hand back to the javascript.
  65   base::Time time_omnibox_started_;
  66
  67   // The input used when starting the AutocompleteController.
  68   AutocompleteInput input_;
  69
  70   // Handle back to the page by which we can pass results.
  71   OmniboxPagePtr page_;
  72
  73   // The Profile* handed to us in our constructor.
  74   Profile* profile_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(OmniboxUIHandler);
  77 };
  78
  79 #endif  // CHROME_BROWSER_UI_WEBUI_OMNIBOX_OMNIBOX_UI_HANDLER_H_