ui/app_list/search_controller.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 UI_APP_LIST_SEARCH_CONTROLLER_H_
   6 #define UI_APP_LIST_SEARCH_CONTROLLER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/timer/timer.h"
  12 #include "ui/app_list/app_list_export.h"
  13 #include "ui/app_list/app_list_model.h"
  14 #include "ui/app_list/search/mixer.h"
  15 #include "ui/app_list/speech_ui_model_observer.h"
  16
  17 namespace app_list {
  18
  19 class History;
  20 class SearchBoxModel;
  21 class SearchProvider;
  22 class SearchResult;
  23
  24 // Controller that collects query from given SearchBoxModel, dispatches it
  25 // to all search providers, then invokes the mixer to mix and to publish the
  26 // results to the given SearchResults UI model.
  27 class APP_LIST_EXPORT SearchController {
  28  public:
  29   SearchController(SearchBoxModel* search_box,
  30                    AppListModel::SearchResults* results,
  31                    History* history);
  32   virtual ~SearchController();
  33
  34   void Start(bool is_voice_query);
  35   void Stop();
  36
  37   void OpenResult(SearchResult* result, int event_flags);
  38   void InvokeResultAction(SearchResult* result,
  39                           int action_index,
  40                           int event_flags);
  41
  42   // Adds a new mixer group. See Mixer::AddGroup.
  43   size_t AddGroup(size_t max_results, double boost, double multiplier);
  44
  45   // Adds a new mixer group. See Mixer::AddOmniboxGroup.
  46   size_t AddOmniboxGroup(size_t max_results, double boost, double multiplier);
  47
  48   // Takes ownership of |provider| and associates it with given mixer group.
  49   void AddProvider(size_t group_id, scoped_ptr<SearchProvider> provider);
  50
  51  private:
  52   typedef ScopedVector<SearchProvider> Providers;
  53
  54   // Invoked when the search results are changed.
  55   void OnResultsChanged();
  56
  57   SearchBoxModel* search_box_;
  58
  59   bool dispatching_query_;
  60   Providers providers_;
  61   scoped_ptr<Mixer> mixer_;
  62   History* history_;  // KeyedService, not owned.
  63
  64   bool is_voice_query_;
  65
  66   base::OneShotTimer<SearchController> stop_timer_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(SearchController);
  69 };
  70
  71 }  // namespace app_list
  72
  73 #endif  // UI_APP_LIST_SEARCH_CONTROLLER_H_