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      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_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
      6 #define UI_APP_LIST_VIEWS_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/views/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                                      int event_flags) OVERRIDE;
     58   virtual void SearchResultActionActivated(SearchResultView* view,
     59                                            size_t action_index,
     60                                            int event_flags) OVERRIDE;
     61   virtual void OnSearchResultInstalled(SearchResultView* view) OVERRIDE;
     62   virtual void OnSearchResultUninstalled(SearchResultView* view) OVERRIDE;
     63 
     64   SearchResultListViewDelegate* delegate_;  // Not owned.
     65   AppListModel::SearchResults* results_;  // Owned by AppListModel.
     66 
     67   int last_visible_index_;
     68   int selected_index_;
     69 
     70   // The factory that consolidates multiple Update calls into one.
     71   base::WeakPtrFactory<SearchResultListView> update_factory_;
     72 
     73   DISALLOW_COPY_AND_ASSIGN(SearchResultListView);
     74 };
     75 
     76 }  // namespace app_ist
     77 
     78 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_LIST_VIEW_H_
     79