ui/app_list/search_result_list_view.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 UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_
   6 #define UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "ui/app_list/app_list_model.h"
  11 #include "ui/app_list/search_result_view_delegate.h"
  12 #include "ui/base/models/list_model_observer.h"
  13 #include "ui/views/view.h"
  14
  15 namespace app_list {
  16
  17 class SearchResultListViewDelegate;
  18 class SearchResultView;
  19
  20 // SearchResultListView displays AppListModel::SearchResults with a list of
  21 // SearchResultView.
  22 class SearchResultListView : public views::View,
  23                              public ui::ListModelObserver,
  24                              public SearchResultViewDelegate {
  25  public:
  26   explicit SearchResultListView(SearchResultListViewDelegate* delegate);
  27   virtual ~SearchResultListView();
  28
  29   void SetResults(AppListModel::SearchResults* results);
  30
  31   void SetSelectedIndex(int selected_index);
  32
  33   bool IsResultViewSelected(const SearchResultView* result_view) const;
  34
  35   // Overridden from views::View:
  36   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
  37
  38  private:
  39   // Helper function to get SearchResultView at given |index|.
  40   SearchResultView* GetResultViewAt(int index);
  41
  42   // Updates UI with model.
  43   void Update();
  44
  45   // Schedules an Update call using |update_factory_|. Do nothing if there is a
  46   // pending call.
  47   void ScheduleUpdate();
  48
  49   // Overridden from ListModelObserver:
  50   virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
  51   virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
  52   virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
  53   virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
  54
  55   // Overridden from SearchResultViewDelegate:
  56   virtual void SearchResultActivated(SearchResultView* view,
  57                                      const ui::Event& event) OVERRIDE;
  58   virtual void SearchResultActionActivated(SearchResultView* view,
  59                                            int action_index,
  60                                            const ui::Event& event) OVERRIDE;
  61
  62   SearchResultListViewDelegate* delegate_;  // Not owned.
  63   AppListModel::SearchResults* results_;  // Owned by AppListModel.
  64
  65   int last_visible_index_;
  66   int selected_index_;
  67
  68   // The factory that consolidates multiple Update calls into one.
  69   base::WeakPtrFactory<SearchResultListView> update_factory_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(SearchResultListView);
  72 };
  73
  74 }  // namespace app_ist
  75
  76 #endif  // UI_APP_LIST_SEARCH_RESULT_LIST_VIEW_H_